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libcyberiadaml/cyberiadaml.c

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/* -----------------------------------------------------------------------------
* The Cyberiada GraphML library implemention
*
* The C library implementation
*
* Copyright (C) 2024 Alexey Fedoseev <aleksey@fedoseev.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see https://www.gnu.org/licenses/
*
* ----------------------------------------------------------------------------- */
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/encoding.h>
#include <libxml/xmlwriter.h>
#include <regex.h>
#include <stddef.h>
#include "cyberiadaml.h"
#include "utf8enc.h"
#include "cyb_types.h"
/* -----------------------------------------------------------------------------
* Cyberiada parser constants
* ----------------------------------------------------------------------------- */
/* Core GraphML constants */
#define GRAPHML_XML_ENCODING "utf-8"
#define GRAPHML_NAMESPACE_URI "http://graphml.graphdrawing.org/xmlns"
#define GRAPHML_GRAPHML_ELEMENT "graphml"
#define GRAPHML_GRAPH_ELEMENT "graph"
#define GRAPHML_NODE_ELEMENT "node"
#define GRAPHML_EDGE_ELEMENT "edge"
#define GRAPHML_DATA_ELEMENT "data"
#define GRAPHML_KEY_ELEMENT "key"
#define GRAPHML_PORT_ELEMENT "port"
#define GRAPHML_POINT_ELEMENT "point"
#define GRAPHML_RECT_ELEMENT "rect"
#define GRAPHML_ID_ATTRIBUTE "id"
#define GRAPHML_KEY_ATTRIBUTE "key"
#define GRAPHML_FOR_ATTRIBUTE "for"
#define GRAPHML_NAME_ATTRIBUTE "name"
#define GRAPHML_EDGEDEFAULT_ATTRIBUTE "edgedefault"
#define GRAPHML_ATTR_NAME_ATTRIBUTE "attr.name"
#define GRAPHML_ATTR_TYPE_ATTRIBUTE "attr.type"
#define GRAPHML_EDGEDEFAULT_ATTRIBUTE_VALUE "directed"
#define GRAPHML_SOURCE_ATTRIBUTE "source"
#define GRAPHML_TARGET_ATTRIBUTE "target"
/* Common GraphML constants */
#define GRAPHML_GEOM_X_ATTRIBUTE "x"
#define GRAPHML_GEOM_Y_ATTRIBUTE "y"
#define GRAPHML_GEOM_WIDTH_ATTRIBUTE "width"
#define GRAPHML_GEOM_HEIGHT_ATTRIBUTE "height"
/* Cyberiada-GraphML format constants */
#define GRAPHML_CYB_GRAPH_VERTEX_INITIAL "initial"
#define GRAPHML_CYB_GRAPH_VERTEX_FINAL "final"
#define GRAPHML_CYB_GRAPH_VERTEX_CHOICE "choice"
#define GRAPHML_CYB_GRAPH_VERTEX_TERMINATE "terminate"
#define GRAPHML_CYB_GRAPH_VERTEX_SHALLOW_HISTORY "shallowHistory"
#define GRAPHML_CYB_GRAPH_VERTEX_DEEP_HISTORY "deepHistory"
#define GRAPHML_CYB_GRAPH_VERTEX_ENTRY_POINT "entryPoint"
#define GRAPHML_CYB_GRAPH_VERTEX_EXIT_POINT "exitPoint"
#define GRAPHML_CYB_GRAPH_VERTEX_FORK "fork"
#define GRAPHML_CYB_GRAPH_VERTEX_JOIN "join"
#define GRAPHML_CYB_COMMENT_FORMAL "formal"
#define GRAPHML_CYB_COMMENT_INFORMAL "informal"
/* YED format constants */
#define GRAPHML_NAMESPACE_URI_YED "http://www.yworks.com/xml/graphml"
#define GRAPHML_BERLOGA_SCHEMENAME_ATTR "SchemeName"
#define GRAPHML_YED_YFILES_TYPE_ATTR "yfiles.type"
#define GRAPHML_YED_GEOMETRYNODE "Geometry"
#define GRAPHML_YED_BORDERSTYLENODE "BorderStyle"
#define GRAPHML_YED_LINESTYLENODE "LineStyle"
#define GRAPHML_YED_FILLNODE "Fill"
#define GRAPHML_YED_PATHNODE "Path"
#define GRAPHML_YED_POINTNODE "Point"
#define GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE "sx"
#define GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE "sy"
#define GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE "tx"
#define GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE "ty"
#define GRAPHML_YED_COMMENTNODE "UMLNoteNode"
#define GRAPHML_YED_GROUPNODE "GroupNode"
#define GRAPHML_YED_GENERICNODE "GenericNode"
#define GRAPHML_YED_LABELNODE "NodeLabel"
#define GRAPHML_YED_NODE_CONFIG_ATTRIBUTE "configuration"
#define GRAPHML_YED_NODE_CONFIG_START "com.yworks.bpmn.Event"
#define GRAPHML_YED_NODE_CONFIG_START2 "com.yworks.bpmn.Event.withShadow"
#define GRAPHML_YED_PROPNODE "Property"
#define GRAPHML_YED_PROP_VALUE_ATTRIBUTE "value"
#define GRAPHML_YED_PROP_VALUE_START "EVENT_CHARACTERISTIC_START"
#define GRAPHML_YED_EDGELABEL "EdgeLabel"
#define GRAPHML_YED_POLYLINEEDGE "PolyLineEdge"
/* HSM format / standard constants */
#define CYBERIADA_FORMAT_CYBERIADAML "Cyberiada-GraphML-1.0"
#define CYBERIADA_FORMAT_BERLOGA "yEd Berloga"
#define CYBERIADA_FORMAT_OSTRANNA "yEd Ostranna"
#define CYBERIADA_STANDARD_VERSION_CYBERIADAML "1.0"
/* HSM action constants */
#define CYBERIADA_NEWLINE "\n\n"
#define CYBERIADA_NEWLINE_RN "\r\n\r\n"
#define CYBERIADA_ACTION_TRIGGER_ENTRY "entry"
#define CYBERIADA_ACTION_TRIGGER_EXIT "exit"
#define CYBERIADA_ACTION_TRIGGER_DO "do"
#define CYBERIADA_ACTION_EDGE_REGEXP "^\\s*(\\w((\\w| |\\.)*\\w)?(\\(\\w+\\))?)?\\s*(\\[([^]]+)\\])?\\s*(propagate|block)?\\s*(/\\s*(.*))?\\s*$"
#define CYBERIADA_ACTION_NODE_REGEXP "^\\s*(\\w((\\w| |\\.)*\\w)?(\\(\\w+\\))?)\\s*(\\[([^]]+)\\])?\\s*(propagate|block)?\\s*(/\\s*(.*)?)\\s*$"
#define CYBERIADA_ACTION_REGEXP_MATCHES 10
#define CYBERIADA_ACTION_REGEXP_MATCH_TRIGGER 1
#define CYBERIADA_ACTION_REGEXP_MATCH_GUARD 6
#define CYBERIADA_ACTION_REGEXP_MATCH_PROP 7
#define CYBERIADA_ACTION_REGEXP_MATCH_ACTION 9
#define CYBERIADA_ACTION_SPACES_REGEXP "^\\s*$"
/*#define CYBERIADA_ACTION_NEWLINE_REGEXP "^([^\n]*(\n[ \t\r]*[^\\s])?)*\n\\s*\n(.*)?$"
#define CYBERIADA_ACTION_NL_REGEXP_MATCHES 4*/
/* CybediadaML metadata constants */
#define CYBERIADA_META_NODE_DEFAULT_ID "nMeta"
#define CYBERIADA_META_NODE_TITLE "CGML_META"
#define CYBERIADA_META_SEPARATOR_CHR '/'
#define CYBERIADA_META_NEW_LINE_CHR '\n'
#define CYBERIADA_META_NEW_LINE_STR "\n"
#define CYBERIADA_META_STANDARD_VERSION "standardVersion"
#define CYBERIADA_META_PLATFORM_NAME "platformName"
#define CYBERIADA_META_PLATFORM_VERSION "platformVersion"
#define CYBERIADA_META_PLATFORM_LANGUAGE "platformLanguage"
#define CYBERIADA_META_TARGET_SYSTEM "target"
#define CYBERIADA_META_NAME "name"
#define CYBERIADA_META_AUTHOR "author"
#define CYBERIADA_META_CONTACT "contact"
#define CYBERIADA_META_DESCRIPTION "description"
#define CYBERIADA_META_VERSION "version"
#define CYBERIADA_META_DATE "date"
#define CYBERIADA_META_TRANSITION_ORDER "transitionOrder"
#define CYBERIADA_META_AO_TRANSITION "transitionFirst"
#define CYBERIADA_META_AO_EXIT "exitFirst"
#define CYBERIADA_META_EVENT_PROPAGATION "eventPropagation"
#define CYBERIADA_META_EP_PROPAGATE "propagate"
#define CYBERIADA_META_EP_BLOCK "block"
#define CYBERIADA_META_MARKUP_LANGUAGE "markupLanguage"
/* Misc. constants */
#define MAX_STR_LEN 4096
#define PSEUDO_NODE_SIZE 20
#define EMPTY_TITLE ""
#ifdef __DEBUG__
#define DEBUG(...) fprintf(stderr, __VA_ARGS__)
#else
#define DEBUG(...)
#endif
#define ERROR(...) fprintf(stderr, __VA_ARGS__)
/* Types & macros for XML/GraphML processing */
#define INDENT_STR " "
#define XML_WRITE_OPEN_E(w, e) if ((res = xmlTextWriterStartElement(w, (const xmlChar *)e)) < 0) { \
fprintf(stderr, "xml open element error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_OPEN_E_I(w, e, indent) xmlTextWriterWriteRaw(w, (const xmlChar *)"\n"); \
for (size_t _i = 0; _i < indent; _i++) { \
xmlTextWriterWriteRaw(w, (const xmlChar *)INDENT_STR); \
} \
if ((res = xmlTextWriterStartElement(w, (const xmlChar *)e)) < 0) { \
fprintf(stderr, "xml open element error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_OPEN_E_NS_I(w, e, ns, indent) xmlTextWriterWriteRaw(w, (const xmlChar *)"\n"); \
for (size_t _i = 0; _i < indent; _i++) { \
xmlTextWriterWriteRaw(w, (const xmlChar *)INDENT_STR); \
} \
if ((res = xmlTextWriterStartElementNS(w, (const xmlChar *)ns, \
(const xmlChar *)e, NULL)) < 0) { \
fprintf(stderr, "xml open element error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_ATTR(w, a, v) if ((res = xmlTextWriterWriteAttribute(w, (const xmlChar *)a, \
(const xmlChar *)v)) < 0) { \
fprintf(stderr, "xml attribute error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_TEXT(w, txt) if ((res = xmlTextWriterWriteString(w, (const xmlChar *)txt)) < 0) { \
fprintf(stderr, "xml text error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_CLOSE_E(w) if ((res = xmlTextWriterEndElement(w)) < 0) { \
fprintf(stderr, "xml close element error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
#define XML_WRITE_CLOSE_E_I(w, indent) xmlTextWriterWriteRaw(w, (const xmlChar *)"\n"); \
for (size_t _i = 0; _i < indent; _i++) { \
xmlTextWriterWriteRaw(w, (const xmlChar *)INDENT_STR); \
} \
if ((res = xmlTextWriterEndElement(w)) < 0) { \
fprintf(stderr, "xml close element error %d at %s:%d", res, __FILE__, __LINE__); \
return CYBERIADA_XML_ERROR; \
}
typedef struct {
char* attr_id;
const char* attr_for;
const char* attr_name;
const char* attr_type;
char* extra;
} GraphMLKey;
#define GRAPHML_CYB_KEY_FORMAT "gFormat"
#define GRAPHML_CYB_KEY_NAME "dName"
#define GRAPHML_CYB_KEY_STATE_MACHINE "dStateMachine"
#define GRAPHML_CYB_KEY_SUBMACHINE "dSubmachineState"
#define GRAPHML_CYB_KEY_DATA "dData"
#define GRAPHML_CYB_KEY_COMMENT "dNote"
#define GRAPHML_CYB_KEY_COMMENT_SUBJECT "dPivot"
#define GRAPHML_CYB_KEY_COMMENT_CHUNK "dChunk"
#define GRAPHML_CYB_KEY_GEOMETRY "dGeometry"
#define GRAPHML_CYB_KEY_SOURCE_POINT "dSourcePoint"
#define GRAPHML_CYB_KEY_TARGET_POINT "dTargetPoint"
#define GRAPHML_CYB_KEY_LABEL_GEOMETRY "dLabelGeometry"
#define GRAPHML_CYB_KEY_VERTEX "dVertex"
#define GRAPHML_CYB_KEY_MARKUP "dMarkup"
#define GRAPHML_CYB_KEY_COLOR "dColor"
#define GRAPHML_CYB_KEY_FORMAT_NAME "format"
#define GRAPHML_CYB_KEY_NAME_NAME "name"
#define GRAPHML_CYB_KEY_STATE_MACHINE_NAME "stateMachine"
#define GRAPHML_CYB_KEY_SUBMACHINE_NAME "submachineState"
#define GRAPHML_CYB_KEY_DATA_NAME "data"
#define GRAPHML_CYB_KEY_COMMENT_NAME "note"
#define GRAPHML_CYB_KEY_COMMENT_SUBJECT_NAME "pivot"
#define GRAPHML_CYB_KEY_COMMENT_CHUNK_NAME "chunk"
#define GRAPHML_CYB_KEY_GEOMETRY_NAME "geometry"
#define GRAPHML_CYB_KEY_SOURCE_POINT_NAME "sourcePoint"
#define GRAPHML_CYB_KEY_TARGET_POINT_NAME "targetPoint"
#define GRAPHML_CYB_KEY_LABEL_GEOMETRY_NAME "labelGeometry"
#define GRAPHML_CYB_KEY_VERTEX_NAME "vertex"
#define GRAPHML_CYB_KEY_MARKUP_NAME "markup"
#define GRAPHML_CYB_KEY_COLOR_NAME "color"
static GraphMLKey cyberiada_graphml_keys[] = {
{ GRAPHML_CYB_KEY_FORMAT, GRAPHML_GRAPHML_ELEMENT, GRAPHML_CYB_KEY_FORMAT_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_NAME, GRAPHML_GRAPH_ELEMENT, GRAPHML_CYB_KEY_NAME_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_NAME, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_NAME_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_STATE_MACHINE, GRAPHML_GRAPH_ELEMENT, GRAPHML_CYB_KEY_STATE_MACHINE_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_SUBMACHINE, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_SUBMACHINE_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_GEOMETRY, GRAPHML_GRAPH_ELEMENT, GRAPHML_CYB_KEY_GEOMETRY_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_GEOMETRY, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_GEOMETRY_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_GEOMETRY, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_GEOMETRY_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_SOURCE_POINT, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_SOURCE_POINT_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_TARGET_POINT, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_TARGET_POINT_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_LABEL_GEOMETRY, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_LABEL_GEOMETRY_NAME, NULL, NULL },
{ GRAPHML_CYB_KEY_COMMENT, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_COMMENT_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_VERTEX, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_VERTEX_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_DATA, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_DATA_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_DATA, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_DATA_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_MARKUP, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_MARKUP_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_COLOR, GRAPHML_NODE_ELEMENT, GRAPHML_CYB_KEY_COLOR_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_COLOR, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_COLOR_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_COMMENT_SUBJECT, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_COMMENT_SUBJECT_NAME, "string", NULL },
{ GRAPHML_CYB_KEY_COMMENT_CHUNK, GRAPHML_EDGE_ELEMENT, GRAPHML_CYB_KEY_COMMENT_CHUNK_NAME, "string", NULL }
};
static const size_t cyberiada_graphml_keys_count = sizeof(cyberiada_graphml_keys) / sizeof(GraphMLKey);
#define GRAPHML_YED_KEY_GRAPH_DESCR "d0"
#define GRAPHML_YED_KEY_PORT_GRAPHICS "d1"
#define GRAPHML_YED_KEY_PORT_GEOMETRY "d2"
#define GRAPHML_YED_KEY_PORT_USER_DATA "d3"
#define GRAPHML_YED_KEY_NODE_URL "d4"
#define GRAPHML_YED_KEY_NODE_DESCR "d5"
#define GRAPHML_YED_KEY_NODE_GRAPHICS "d6"
#define GRAPHML_YED_KEY_GRAPHML_RES "d7"
#define GRAPHML_YED_KEY_EDGE_URL "d8"
#define GRAPHML_YED_KEY_EDGE_DESCR "d9"
#define GRAPHML_YED_KEY_EDGE_GRAPHICS "d10"
static GraphMLKey yed_graphml_keys[] = {
{ GRAPHML_YED_KEY_GRAPH_DESCR, GRAPHML_GRAPH_ELEMENT, "description", "string", NULL },
{ GRAPHML_YED_KEY_PORT_GRAPHICS, GRAPHML_PORT_ELEMENT, NULL, NULL, "portgraphics" },
{ GRAPHML_YED_KEY_PORT_GEOMETRY, GRAPHML_PORT_ELEMENT, NULL, NULL, "portgeometry" },
{ GRAPHML_YED_KEY_PORT_USER_DATA, GRAPHML_PORT_ELEMENT, NULL, NULL, "portuserdata" },
{ GRAPHML_YED_KEY_NODE_URL, GRAPHML_NODE_ELEMENT, "url", "string", NULL },
{ GRAPHML_YED_KEY_NODE_DESCR, GRAPHML_NODE_ELEMENT, "description", "string", NULL },
{ GRAPHML_YED_KEY_NODE_GRAPHICS, GRAPHML_NODE_ELEMENT, NULL, NULL, "nodegraphics" },
{ GRAPHML_YED_KEY_GRAPHML_RES, GRAPHML_GRAPHML_ELEMENT, NULL, NULL, "resources" },
{ GRAPHML_YED_KEY_EDGE_URL, GRAPHML_EDGE_ELEMENT, "url", "string", NULL },
{ GRAPHML_YED_KEY_EDGE_DESCR, GRAPHML_EDGE_ELEMENT, "description", "string", NULL },
{ GRAPHML_YED_KEY_EDGE_GRAPHICS, GRAPHML_EDGE_ELEMENT, NULL, NULL, "edgegraphics" }
};
static const size_t yed_graphml_keys_count = sizeof(yed_graphml_keys) / sizeof(GraphMLKey);
/* -----------------------------------------------------------------------------
* Utility functions
* ----------------------------------------------------------------------------- */
static int cyberiada_copy_string(char** target, size_t* size, const char* source)
{
char* target_str;
size_t strsize;
if (!source) {
*target = NULL;
*size = 0;
return CYBERIADA_NO_ERROR;
}
strsize = strlen(source);
if (strsize > MAX_STR_LEN - 1) {
strsize = MAX_STR_LEN - 1;
}
target_str = (char*)malloc(strsize + 1);
strncpy(target_str, source, strsize);
target_str[strsize] = 0;
*target = target_str;
if (size) {
*size = strsize;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_string_is_empty(const char* s)
{
while(*s) {
if (!isspace(*s)) {
return 0;
}
s++;
}
return 1;
}
/* -----------------------------------------------------------------------------
* Graph manipulation functions
* ----------------------------------------------------------------------------- */
typedef int (*CyberiadaGraphHandler)(CyberiadaNode* node,
CyberiadaNode* parent);
static int cyberiada_process_graph(CyberiadaNode* root,
CyberiadaNode* parent,
CyberiadaGraphHandler handler)
{
int res;
CyberiadaNode *node;
for (node = root; node; node = node->next) {
if ((res = handler(node, parent)) != CYBERIADA_NO_ERROR) {
return res;
}
if (node->children) {
if ((res = cyberiada_process_graph(node->children,
node, handler)) != CYBERIADA_NO_ERROR) {
return res;
}
}
}
return CYBERIADA_NO_ERROR;
}
static CyberiadaNode* cyberiada_graph_find_node_by_id(CyberiadaNode* root, const char* id)
{
CyberiadaNode* node;
CyberiadaNode* found;
for (node = root; node; node = node->next) {
if (strcmp(node->id, id) == 0) {
return node;
}
if (node->children) {
found = cyberiada_graph_find_node_by_id(node->children, id);
if (found) return found;
}
}
return NULL;
}
static CyberiadaNode* cyberiada_graph_find_node_by_type(CyberiadaNode* root, CyberiadaNodeTypeMask mask)
{
CyberiadaNode* node;
CyberiadaNode* found;
if (root->type & mask) {
return root;
}
for (node = root->next; node; node = node->next) {
found = cyberiada_graph_find_node_by_type(node, mask);
if (found)
return found;
}
if (root->children) {
return cyberiada_graph_find_node_by_type(root->children, mask);
}
return NULL;
}
static CyberiadaEdge* cyberiada_graph_find_edge_by_id(CyberiadaEdge* root, const char* id)
{
CyberiadaEdge* edge;
for (edge = root; edge; edge = edge->next) {
if (edge->id && strcmp(edge->id, id) == 0) {
return edge;
}
}
return NULL;
}
static CyberiadaCommentData* cyberiada_new_comment_data(void)
{
CyberiadaCommentData* cd = (CyberiadaCommentData*)malloc(sizeof(CyberiadaCommentData));
memset(cd, 0, sizeof(CyberiadaCommentData));
return cd;
}
static CyberiadaLink* cyberiada_new_link(const char* ref)
{
CyberiadaLink* link = (CyberiadaLink*)malloc(sizeof(CyberiadaLink));
memset(link, 0, sizeof(CyberiadaLink));
cyberiada_copy_string(&(link->ref), &(link->ref_len), ref);
return link;
}
static CyberiadaNode* cyberiada_new_node(const char* id)
{
CyberiadaNode* new_node = (CyberiadaNode*)malloc(sizeof(CyberiadaNode));
memset(new_node, 0, sizeof(CyberiadaNode));
cyberiada_copy_string(&(new_node->id), &(new_node->id_len), id);
new_node->type = cybNodeSimpleState;
return new_node;
}
static int cyberiada_destroy_action(CyberiadaAction* action)
{
CyberiadaAction* a;
if (action != NULL) {
do {
a = action;
if (a->trigger) free(a->trigger);
if (a->guard) free(a->guard);
if (a->behavior) free(a->behavior);
action = a->next;
free(a);
} while (action);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_destroy_all_nodes(CyberiadaNode* node);
static int cyberiada_destroy_node(CyberiadaNode* node)
{
if(node != NULL) {
if (node->id) free(node->id);
if (node->title) free(node->title);
if (node->children) {
cyberiada_destroy_all_nodes(node->children);
}
if (node->actions) cyberiada_destroy_action(node->actions);
if (node->geometry_rect) free(node->geometry_rect);
if (node->color) free(node->color);
if (node->link) {
if (node->link->ref) free(node->link->ref);
free(node->link);
}
if (node->comment_data) {
if (node->comment_data->body) free(node->comment_data->body);
if (node->comment_data->markup) free(node->comment_data->markup);
free(node->comment_data);
}
free(node);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_destroy_all_nodes(CyberiadaNode* node)
{
CyberiadaNode* n;
if(node != NULL) {
do {
n = node;
node = node->next;
cyberiada_destroy_node(n);
} while (node);
}
return CYBERIADA_NO_ERROR;
}
static CyberiadaCommentSubject* cyberiada_new_comment_subject(CyberiadaCommentSubjectType type)
{
CyberiadaCommentSubject* cs = (CyberiadaCommentSubject*)malloc(sizeof(CyberiadaCommentSubject));
memset(cs, 0, sizeof(CyberiadaCommentSubject));
cs->type = type;
return cs;
}
static CyberiadaEdge* cyberiada_new_edge(const char* id, const char* source, const char* target)
{
CyberiadaEdge* new_edge = (CyberiadaEdge*)malloc(sizeof(CyberiadaEdge));
memset(new_edge, 0, sizeof(CyberiadaEdge));
new_edge->type = cybEdgeTransition;
cyberiada_copy_string(&(new_edge->id), &(new_edge->id_len), id);
cyberiada_copy_string(&(new_edge->source_id), &(new_edge->source_id_len), source);
cyberiada_copy_string(&(new_edge->target_id), &(new_edge->target_id_len), target);
return new_edge;
}
static CyberiadaAction* cyberiada_new_action(CyberiadaActionType type,
const char* trigger,
const char* guard,
const char* behavior)
{
CyberiadaAction* action = (CyberiadaAction*)malloc(sizeof(CyberiadaAction));
memset(action, 0, sizeof(CyberiadaAction));
action->type = type;
cyberiada_copy_string(&(action->trigger), &(action->trigger_len), trigger);
cyberiada_copy_string(&(action->guard), &(action->guard_len), guard);
cyberiada_copy_string(&(action->behavior), &(action->behavior_len), behavior);
return action;
}
static regex_t cyberiada_edge_action_regexp;
static regex_t cyberiada_node_action_regexp;
/*static regex_t cyberiada_newline_regexp;*/
static regex_t cyberiada_spaces_regexp;
static int cyberiada_init_action_regexps(void)
{
if (regcomp(&cyberiada_edge_action_regexp, CYBERIADA_ACTION_EDGE_REGEXP, REG_EXTENDED)) {
ERROR("cannot compile edge action regexp\n");
return CYBERIADA_ASSERT;
}
if (regcomp(&cyberiada_node_action_regexp, CYBERIADA_ACTION_NODE_REGEXP, REG_EXTENDED)) {
ERROR("cannot compile edge action regexp\n");
return CYBERIADA_ASSERT;
}
/* if (regcomp(&cyberiada_newline_regexp, CYBERIADA_ACTION_NEWLINE_REGEXP, REG_EXTENDED)) {
ERROR("cannot compile new line regexp\n");
return CYBERIADA_ASSERT;
}*/
if (regcomp(&cyberiada_spaces_regexp, CYBERIADA_ACTION_SPACES_REGEXP, REG_EXTENDED)) {
ERROR("cannot compile new line regexp\n");
return CYBERIADA_ASSERT;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_free_action_regexps(void)
{
regfree(&cyberiada_edge_action_regexp);
regfree(&cyberiada_node_action_regexp);
/* regfree(&cyberiada_newline_regexp);*/
regfree(&cyberiada_spaces_regexp);
return CYBERIADA_NO_ERROR;
}
static int cyberiaga_matchres_action_regexps(const char* text,
const regmatch_t* pmatch, size_t pmatch_size,
char** trigger, char** guard, char** behavior)
{
size_t i;
char* part;
int start, end;
if (pmatch_size != CYBERIADA_ACTION_REGEXP_MATCHES) {
ERROR("bad action regexp match array size\n");
return CYBERIADA_ASSERT;
}
for (i = 0; i < pmatch_size; i++) {
if (i != CYBERIADA_ACTION_REGEXP_MATCH_TRIGGER &&
i != CYBERIADA_ACTION_REGEXP_MATCH_GUARD &&
i != CYBERIADA_ACTION_REGEXP_MATCH_ACTION) {
continue;
}
start = pmatch[i].rm_so;
end = pmatch[i].rm_eo;
if (end > start && text[start] != 0) {
part = (char*)malloc((size_t)(end - start + 1));
strncpy(part, &text[start], (size_t)(end - start));
part[(size_t)(end - start)] = 0;
} else {
part = "";
}
if (i == CYBERIADA_ACTION_REGEXP_MATCH_TRIGGER) {
*trigger = part;
} else if (i == CYBERIADA_ACTION_REGEXP_MATCH_GUARD) {
*guard = part;
} else {
/* i == ACTION_REGEXP_MATCH_ACTION */
*behavior= part;
}
}
return CYBERIADA_NO_ERROR;
}
/*static int cyberiaga_matchres_newline(const regmatch_t* pmatch, size_t pmatch_size,
size_t* next_block)
{
if (pmatch_size != ACTION_NL_REGEXP_MATCHES) {
ERROR("bad new line regexp match array size\n");
return CYBERIADA_ASSERT;
}
if (next_block) {
*next_block = (size_t)pmatch[pmatch_size - 1].rm_so;
}
return CYBERIADA_NO_ERROR;
}*/
static int decode_utf8_strings(char** trigger, char** guard, char** behavior)
{
char* oldptr;
size_t len;
if (*trigger && **trigger) {
oldptr = *trigger;
*trigger = utf8_decode(*trigger, strlen(*trigger), &len);
free(oldptr);
}
if (*guard && **guard) {
oldptr = *guard;
*guard = utf8_decode(*guard, strlen(*guard), &len);
free(oldptr);
}
if (*behavior && **behavior) {
oldptr = *behavior;
*behavior = utf8_decode(*behavior, strlen(*behavior), &len);
free(oldptr);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_edge_action(const char* text, CyberiadaAction** action)
{
int res;
size_t buffer_len;
char *trigger = "", *guard = "", *behavior = "";
char *buffer;
regmatch_t pmatch[CYBERIADA_ACTION_REGEXP_MATCHES];
buffer = utf8_encode(text, strlen(text), &buffer_len);
if ((res = regexec(&cyberiada_edge_action_regexp, buffer,
CYBERIADA_ACTION_REGEXP_MATCHES, pmatch, 0)) != 0) {
if (res == REG_NOMATCH) {
ERROR("edge action text didn't match the regexp\n");
return CYBERIADA_ACTION_FORMAT_ERROR;
} else {
ERROR("edge action regexp error %d\n", res);
return CYBERIADA_ASSERT;
}
}
if (cyberiaga_matchres_action_regexps(buffer,
pmatch, CYBERIADA_ACTION_REGEXP_MATCHES,
&trigger, &guard, &behavior) != CYBERIADA_NO_ERROR) {
return CYBERIADA_ASSERT;
}
decode_utf8_strings(&trigger, &guard, &behavior);
/* DEBUG("\n");
DEBUG("edge action:\n");
DEBUG("trigger: %s\n", trigger);
DEBUG("guard: %s\n", guard);
DEBUG("action: %s\n", action);*/
if (*trigger || *guard || *behavior) {
*action = cyberiada_new_action(cybActionTransition, trigger, guard, behavior);
} else {
*action = NULL;
}
if (*trigger) free(trigger);
if (*guard) free(guard);
if (*behavior) free(behavior);
free(buffer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_add_action(const char* trigger, const char* guard, const char* behavior,
CyberiadaAction** action)
{
CyberiadaAction* new_action;
CyberiadaActionType type;
if (trigger) {
if (strcmp(trigger, CYBERIADA_ACTION_TRIGGER_ENTRY) == 0) {
type = cybActionEntry;
} else if (strcmp(trigger, CYBERIADA_ACTION_TRIGGER_EXIT) == 0) {
type = cybActionExit;
} else if (strcmp(trigger, CYBERIADA_ACTION_TRIGGER_DO) == 0) {
type = cybActionDo;
} else {
type = cybActionTransition;
}
}
/*DEBUG("\n");
DEBUG("node action:\n");
DEBUG("trigger: %s\n", trigger);
DEBUG("guard: %s\n", guard);
DEBUG("behavior: %s\n", behavior);
DEBUG("type: %d\n", type);*/
new_action = cyberiada_new_action(type, trigger, guard, behavior);
if (*action) {
CyberiadaAction* b = *action;
while (b->next) b = b->next;
b->next = new_action;
} else {
*action = new_action;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_state_block_action(const char* text, CyberiadaAction** action)
{
int res;
char *trigger = "", *guard = "", *behavior = "";
regmatch_t pmatch[CYBERIADA_ACTION_REGEXP_MATCHES];
if ((res = regexec(&cyberiada_node_action_regexp, text,
CYBERIADA_ACTION_REGEXP_MATCHES, pmatch, 0)) != 0) {
if (res == REG_NOMATCH) {
ERROR("node block action text didn't match the regexp\n");
return CYBERIADA_ACTION_FORMAT_ERROR;
} else {
ERROR("node block action regexp error %d\n", res);
return CYBERIADA_ASSERT;
}
}
if (cyberiaga_matchres_action_regexps(text,
pmatch, CYBERIADA_ACTION_REGEXP_MATCHES,
&trigger, &guard, &behavior) != CYBERIADA_NO_ERROR) {
return CYBERIADA_ASSERT;
}
decode_utf8_strings(&trigger, &guard, &behavior);
cyberiada_add_action(trigger, guard, behavior, action);
if (*trigger) free(trigger);
if (*guard) free(guard);
if (*behavior) free(behavior);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_state_actions(const char* text, CyberiadaAction** action)
{
int res;
size_t buffer_len;
char *buffer, *start, *block, *block2, *next;
/* regmatch_t pmatch[ACTION_NL_REGEXP_MATCHES];*/
buffer = utf8_encode(text, strlen(text), &buffer_len);
next = buffer;
*action = NULL;
while (*next) {
start = next;
block = strstr(start, CYBERIADA_NEWLINE);
block2 = strstr(start, CYBERIADA_NEWLINE_RN);
if (block2 && ((block && (block > block2)) || !block)) {
block = block2;
*block2 = 0;
next = block2 + 4;
} else if (block) {
*block = 0;
next = block + 2;
} else {
block = start;
next = start + strlen(block);
}
/* if ((res = regexec(&cyberiada_newline_regexp, start,
ACTION_NL_REGEXP_MATCHES, pmatch, 0)) != 0) {
if (res != REG_NOMATCH) {
ERROR("newline regexp error %d\n", res);
return CYBERIADA_ASSERT;
}
}
if (res == REG_NOMATCH) {
block = start;
start = start + strlen(block);
} else {
if (cyberiaga_matchres_newline(pmatch, ACTION_NL_REGEXP_MATCHES,
&next_block) != CYBERIADA_NO_ERROR) {
return CYBERIADA_ASSERT;
}
block = start;
start[next_block - 1] = 0;
start = start + next_block;
DEBUG("first part: '%s'\n", block);
DEBUG("second part: '%s'\n", start);
}*/
if (regexec(&cyberiada_spaces_regexp, start, 0, NULL, 0) == 0) {
continue ;
}
if ((res = cyberiada_decode_state_block_action(start, action)) != CYBERIADA_NO_ERROR) {
ERROR("error while decoding state block %s: %d\n", start, res);
return res;
}
}
free(buffer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_graph_add_sibling_node(CyberiadaNode* sibling, CyberiadaNode* new_node)
{
CyberiadaNode* node = sibling;
if (!new_node) {
return CYBERIADA_BAD_PARAMETER;
}
new_node->parent = sibling->parent;
while (node->next) node = node->next;
node->next = new_node;
return CYBERIADA_NO_ERROR;
}
/*static int cyberiada_graph_add_node_action(CyberiadaNode* node,
CyberiadaActionType type,
const char* trigger,
const char* guard,
const char* action)
{
CyberiadaAction *action, *new_action;
if (!node) {
return CYBERIADA_BAD_PARAMETER;
}
new_action = cyberiada_new_action(type, trigger, guard, action);
if (node->action) {
node->action = new_action;
} else {
action = node->action;
while (action->next) action = action->next;
action->next = new_action;
}
return CYBERIADA_NO_ERROR;
}*/
/*static int cyberiada_find_and_remove_node(CyberiadaNode* current, CyberiadaNode* target)
{
int res;
CyberiadaNode* next = NULL;
CyberiadaNode* prev = NULL;
if (current)
{
do {
next = current->next;
if (current == target) {
if (!prev) {
return CYBERIADA_BAD_PARAMETER;
}
prev->next = next;
target->next = NULL;
return CYBERIADA_NO_ERROR;
} else if (current->children == target) {
current->children = current->children->next;
target->next = NULL;
return CYBERIADA_NO_ERROR;
} else if (current->children) {
res = cyberiada_find_and_remove_node(current->children, target);
if (res == CYBERIADA_NO_ERROR) {
return res;
}
}
prev = current;
current = next;
} while (current);
}
return CYBERIADA_NOT_FOUND;
}*/
/*static int cyberiada_remove_node(CyberiadaSM* sm, CyberiadaNode* node)
{
if (node == NULL) {
return CYBERIADA_NO_ERROR;
} else if (sm->nodes == node) {
sm->nodes = NULL;
return CYBERIADA_NO_ERROR;
} else {
return cyberiada_find_and_remove_node(sm->nodes, node);
}
}*/
static int cyberiada_graph_add_edge(CyberiadaSM* sm, const char* id, const char* source, const char* target)
{
CyberiadaEdge* last_edge;
CyberiadaEdge* new_edge;
if (!sm) {
return CYBERIADA_BAD_PARAMETER;
}
new_edge = cyberiada_new_edge(id, source, target);
last_edge = sm->edges;
if (last_edge == NULL) {
sm->edges = new_edge;
} else {
while (last_edge->next) last_edge = last_edge->next;
last_edge->next = new_edge;
}
return CYBERIADA_NO_ERROR;
}
static CyberiadaEdge* cyberiada_graph_find_last_edge(CyberiadaSM* sm)
{
CyberiadaEdge* edge;
if (!sm) {
return NULL;
}
edge = sm->edges;
while (edge && edge->next) edge = edge->next;
return edge;
}
/*static int cyberiada_graph_add_edge_action(CyberiadaEdge* edge,
CyberiadaActionType type,
const char* trigger,
const char* guard,
const char* action)
{
CyberiadaAction *action, *new_action;
if (!edge) {
return CYBERIADA_BAD_PARAMETER;
}
new_action = cyberiada_new_action(type, trigger, guard, action);
if (edge->action) {
edge->action = new_action;
} else {
action = edge->action;
while (action->next) action = action->next;
action->next = new_action;
}
return CYBERIADA_NO_ERROR;
}*/
static int cyberiada_destroy_edge(CyberiadaEdge* e)
{
CyberiadaPolyline *polyline, *pl;
if (e->id) free(e->id);
if (e->source_id) free(e->source_id);
if (e->target_id) free(e->target_id);
if (e->action) cyberiada_destroy_action(e->action);
if (e->comment_subject) {
if (e->comment_subject->fragment) free(e->comment_subject->fragment);
free(e->comment_subject);
}
if (e->geometry_polyline) {
polyline = e->geometry_polyline;
do {
pl = polyline;
polyline = polyline->next;
free(pl);
} while (polyline);
}
if (e->geometry_source_point) free(e->geometry_source_point);
if (e->geometry_target_point) free(e->geometry_target_point);
if (e->geometry_label_point) free(e->geometry_label_point);
if (e->color) free(e->color);
free(e);
return CYBERIADA_NO_ERROR;
}
typedef CyberiadaList NamesList;
static int cyberiada_add_name_to_list(NamesList** nl, const char* from, const char* to)
{
if (!nl) {
return CYBERIADA_BAD_PARAMETER;
}
cyberiada_list_add(nl, from, (void*)to);
return CYBERIADA_NO_ERROR;
}
static const char* cyberiada_find_name_in_list(NamesList** nl, const char* name)
{
void* result;
if (!nl) {
return NULL;
}
result = cyberiada_list_find(nl, name);
if (result == NULL) {
return NULL;
} else {
return (const char*)result;
}
}
static void cyberiada_free_name_list(NamesList** nl)
{
cyberiada_list_free(nl);
}
static int cyberiada_graphs_reconstruct_nodes(CyberiadaNode* root, NamesList** nl)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaNode *node;
unsigned int num = 0;
node = root;
while (node) {
if (!node->id) {
ERROR("Found null node id\n");
return CYBERIADA_FORMAT_ERROR;
}
if (!*(node->id)) {
do {
if (node->parent && node->parent->parent) {
snprintf(buffer, buffer_len, "%s::n%u",
node->parent->id, num);
} else {
snprintf(buffer, buffer_len, "n%u", num);
}
num++;
} while (cyberiada_graph_find_node_by_id(root, buffer));
free(node->id);
node->id = NULL;
cyberiada_copy_string(&(node->id), &(node->id_len), buffer);
cyberiada_add_name_to_list(nl, "", node->id);
}
if (node->children) {
cyberiada_graphs_reconstruct_nodes(node->children, nl);
}
node = node->next;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_graphs_reconstruct_edges(CyberiadaDocument* doc, NamesList** nl)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaEdge *edge;
CyberiadaSM* sm;
unsigned int num = 0;
const char* new_id;
for (sm = doc->state_machines; sm; sm = sm->next) {
edge = sm->edges;
while (edge) {
if (!*(edge->source_id)) {
new_id = cyberiada_find_name_in_list(nl, edge->source_id);
if (!new_id) {
ERROR("Cannot find replacement for source id %s\n", edge->source_id);
return CYBERIADA_FORMAT_ERROR;
}
free(edge->source_id);
edge->source_id = NULL;
cyberiada_copy_string(&(edge->source_id), &(edge->source_id_len), new_id);
}
if (!*(edge->target_id)) {
new_id = cyberiada_find_name_in_list(nl, edge->target_id);
if (!new_id) {
ERROR("Cannot find replacement for target id %s\n", edge->target_id);
return CYBERIADA_FORMAT_ERROR;
}
free(edge->target_id);
edge->target_id = NULL;
cyberiada_copy_string(&(edge->target_id), &(edge->target_id_len), new_id);
}
edge = edge->next;
}
edge = sm->edges;
while (edge) {
CyberiadaNode* source = cyberiada_graph_find_node_by_id(sm->nodes, edge->source_id);
CyberiadaNode* target = cyberiada_graph_find_node_by_id(sm->nodes, edge->target_id);
if (!source || !target) {
ERROR("cannot find source/target node for edge %s %s\n", edge->source_id, edge->target_id);
return CYBERIADA_FORMAT_ERROR;
}
if (!edge->id || !*(edge->id)) {
snprintf(buffer, buffer_len, "%s-%s", edge->source_id, edge->target_id);
while (cyberiada_graph_find_edge_by_id(sm->edges, buffer)) {
snprintf(buffer, buffer_len, "%s-%s#%u",
edge->source_id, edge->target_id, num);
num++;
}
free(edge->id);
edge->id = NULL;
cyberiada_copy_string(&(edge->id), &(edge->id_len), buffer);
}
edge->source = source;
edge->target = target;
edge = edge->next;
}
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_destroy_meta(CyberiadaMetainformation* meta)
{
if (meta) {
if (meta->standard_version) free(meta->standard_version);
if (meta->platform_name) free(meta->platform_name);
if (meta->platform_version) free(meta->platform_version);
if (meta->platform_language) free(meta->platform_language);
if (meta->target_system) free(meta->target_system);
if (meta->name) free(meta->name);
if (meta->author) free(meta->author);
if (meta->contact) free(meta->contact);
if (meta->description) free(meta->description);
if (meta->version) free(meta->version);
if (meta->date) free(meta->date);
if (meta->markup_language) free(meta->markup_language);
free(meta);
}
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* The Cyberiada GraphML library fucntions declarations
* ----------------------------------------------------------------------------- */
static int cyberiada_init_sm(CyberiadaSM* sm)
{
if (sm) {
sm->nodes = NULL;
sm->edges = NULL;
sm->next = NULL;
}
return CYBERIADA_NO_ERROR;
}
static CyberiadaSM* cyberiada_create_sm(void)
{
CyberiadaSM* sm = (CyberiadaSM*)malloc(sizeof(CyberiadaSM));
cyberiada_init_sm(sm);
return sm;
}
CyberiadaDocument* cyberiada_create_sm_document(void)
{
CyberiadaDocument* doc = (CyberiadaDocument*)malloc(sizeof(CyberiadaDocument));
cyberiada_init_sm_document(doc);
return doc;
}
int cyberiada_init_sm_document(CyberiadaDocument* doc)
{
if (doc) {
doc->format = NULL;
doc->meta_info = NULL;
doc->state_machines = NULL;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_destroy_sm(CyberiadaSM* sm)
{
CyberiadaEdge *edge, *e;
if (sm) {
if (sm->nodes) {
cyberiada_destroy_all_nodes(sm->nodes);
}
if (sm->edges) {
edge = sm->edges;
do {
e = edge;
edge = edge->next;
cyberiada_destroy_edge(e);
} while (edge);
}
free(sm);
}
return CYBERIADA_NO_ERROR;
}
int cyberiada_cleanup_sm_document(CyberiadaDocument* doc)
{
CyberiadaSM *sm, *sm2;
if (doc) {
if (doc->format) {
free(doc->format);
}
if (doc->meta_info) {
cyberiada_destroy_meta(doc->meta_info);
}
if (doc->state_machines) {
sm = doc->state_machines;
do {
sm2 = sm;
sm = sm->next;
cyberiada_destroy_sm(sm2);
} while (sm);
}
cyberiada_init_sm_document(doc);
}
return CYBERIADA_NO_ERROR;
}
int cyberiada_destroy_sm_document(CyberiadaDocument* doc)
{
int res = cyberiada_cleanup_sm_document(doc);
if (res != CYBERIADA_NO_ERROR) {
return res;
}
free(doc);
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* The Cyberiada GraphML XML processor state machine types
* ----------------------------------------------------------------------------- */
typedef enum {
gpsInit = 0,
gpsGraph,
gpsNode,
gpsNodeGeometry,
gpsNodeTitle,
gpsNodeAction,
gpsNodeStart,
gpsEdge,
gpsEdgeGeometry,
gpsEdgeSourcePoint,
gpsEdgeTargetPoint,
gpsEdgeLabelGeometry,
gpsInvalid
} GraphProcessorState;
const char* debug_state_names[] = {
"Init",
"Graph",
"Node",
"NodeGeometry",
"NodeTitle",
"NodeAction",
"NodeStart",
"Edge",
"EdgeGeometry",
"EdgeSourcePoint",
"EdgeTargetPoint",
"EdgeLabelGeometry",
"Invalid"
};
/* -----------------------------------------------------------------------------
* The Cyberiada GraphML XML processor node stack
* ----------------------------------------------------------------------------- */
typedef CyberiadaStack NodeStack;
/* key - const char* xml_element
data - CyberiadaNode* node */
static int node_stack_push(NodeStack** stack)
{
cyberiada_stack_push(stack);
return CYBERIADA_NO_ERROR;
}
static int node_stack_set_top_node(NodeStack** stack, CyberiadaNode* node)
{
if (!stack || !*stack) {
return CYBERIADA_BAD_PARAMETER;
}
cyberiada_stack_update_top_data((CyberiadaStack**)stack, (void*)node);
return CYBERIADA_NO_ERROR;
}
static int node_stack_set_top_element(NodeStack** stack, const char* element)
{
if (!stack || !*stack) {
return CYBERIADA_BAD_PARAMETER;
}
cyberiada_stack_update_top_key(stack, element);
return CYBERIADA_NO_ERROR;
}
static CyberiadaNode* node_stack_current_node(NodeStack** stack)
{
return cyberiada_stack_get_top_data(stack);
}
static int node_stack_pop(NodeStack** stack)
{
if (!stack || !*stack) {
return CYBERIADA_BAD_PARAMETER;
}
cyberiada_stack_pop(stack);
return CYBERIADA_NO_ERROR;
}
static int node_stack_empty(NodeStack** stack)
{
return cyberiada_stack_is_empty(stack);
}
static int node_stack_free(NodeStack** stack)
{
return cyberiada_stack_free(stack);
}
/* -----------------------------------------------------------------------------
* The Cyberiada GraphML XML reader functions
* ----------------------------------------------------------------------------- */
static int cyberiada_get_attr_value(char* buffer, size_t buffer_len,
xmlNode* node, const char* attrname)
{
xmlAttr* attribute = node->properties;
while(attribute) {
if (strcmp((const char*)attribute->name, attrname) == 0) {
xmlChar* value = xmlNodeListGetString(node->doc, attribute->children, 1);
strncpy(buffer, (char*)value, buffer_len);
xmlFree(value);
return CYBERIADA_NO_ERROR;
}
attribute = attribute->next;
}
return CYBERIADA_NOT_FOUND;
}
static int cyberiada_get_element_text(char* buffer, size_t buffer_len,
xmlNode* node)
{
xmlChar* value = xmlNodeListGetString(node->doc,
node->xmlChildrenNode,
1);
if (value) {
strncpy(buffer, (char*)value, buffer_len);
xmlFree(value);
} else {
buffer[0] = 0;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_xml_read_coord(xmlNode* xml_node,
const char* attr_name,
double* result)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
attr_name) != CYBERIADA_NO_ERROR) {
return CYBERIADA_BAD_PARAMETER;
}
*result = atof(buffer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_xml_read_point(xmlNode* xml_node,
CyberiadaPoint** point)
{
CyberiadaPoint* p = (CyberiadaPoint*)malloc(sizeof(CyberiadaPoint));
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_X_ATTRIBUTE,
&(p->x))) {
p->x = 0.0;
}
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_Y_ATTRIBUTE,
&(p->y)) != CYBERIADA_NO_ERROR) {
p->y = 0.0;
}
*point = p;
return CYBERIADA_NO_ERROR;
}
static int cyberiada_xml_read_rect(xmlNode* xml_node,
CyberiadaRect** rect)
{
CyberiadaRect* r = (CyberiadaRect*)malloc(sizeof(CyberiadaRect));
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_X_ATTRIBUTE,
&(r->x)) != CYBERIADA_NO_ERROR) {
r->x = 0.0;
}
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_Y_ATTRIBUTE,
&(r->y)) != CYBERIADA_NO_ERROR) {
r->y = 0.0;
}
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_WIDTH_ATTRIBUTE,
&(r->width)) != CYBERIADA_NO_ERROR) {
r->width = 0.0;
}
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_GEOM_HEIGHT_ATTRIBUTE,
&(r->height)) != CYBERIADA_NO_ERROR) {
r->height = 0.0;
}
*rect = r;
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* Common handlers for the GraphML processor
* ----------------------------------------------------------------------------- */
static GraphProcessorState handle_new_graph(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaSM* sm = doc->state_machines;
CyberiadaNode* parent = node_stack_current_node(stack);
/* process the top graph element only */
if(cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_ID_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
/* DEBUG("found graph %s \n", buffer); */
while (sm->next) sm = sm->next;
if (parent == NULL) {
if (sm->nodes != NULL) {
sm->next = cyberiada_create_sm();
sm = sm->next;
}
sm->nodes = cyberiada_new_node(buffer);
sm->nodes->type = cybNodeSM;
node_stack_set_top_node(stack, sm->nodes);
}
return gpsGraph;
}
static GraphProcessorState handle_new_node(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNode* node;
CyberiadaNode* parent;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_ID_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
/* DEBUG("found node %s\n", buffer); */
parent = node_stack_current_node(stack);
if (parent == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
node = cyberiada_new_node(buffer);
node->parent = parent;
node_stack_set_top_node(stack, node);
if (parent->children == NULL) {
parent->children = node;
} else {
cyberiada_graph_add_sibling_node(parent->children, node);
}
return gpsNode;
}
static GraphProcessorState handle_new_edge(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
char source_buffer[MAX_STR_LEN];
size_t source_buffer_len = sizeof(source_buffer) - 1;
char target_buffer[MAX_STR_LEN];
size_t target_buffer_len = sizeof(target_buffer) - 1;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
if(cyberiada_get_attr_value(source_buffer, source_buffer_len,
xml_node,
GRAPHML_SOURCE_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
if(cyberiada_get_attr_value(target_buffer, target_buffer_len,
xml_node,
GRAPHML_TARGET_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
if(cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_ID_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
buffer[0] = 0;
}
DEBUG("add edge '%s' '%s' -> '%s'\n", buffer, source_buffer, target_buffer);
cyberiada_graph_add_edge(sm, buffer, source_buffer, target_buffer);
return gpsEdge;
}
static GraphProcessorState handle_edge_point(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaEdge *current;
CyberiadaPoint* p;
CyberiadaPolyline *pl, *last_pl;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (cyberiada_xml_read_point(xml_node, &p) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
pl = (CyberiadaPolyline*)malloc(sizeof(CyberiadaPolyline));
memset(pl, 0, sizeof(CyberiadaPolyline));
pl->point.x = p->x;
pl->point.y = p->y;
free(p);
if (current->geometry_polyline == NULL) {
current->geometry_polyline = pl;
} else {
last_pl = current->geometry_polyline;
while (last_pl->next) last_pl = last_pl->next;
last_pl->next = pl;
}
return gpsEdgeGeometry;
}
/* -----------------------------------------------------------------------------
* YED-specific handlers for the GraphML processor
* ----------------------------------------------------------------------------- */
static GraphProcessorState handle_group_node(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
current->type = cybNodeCompositeState;
return gpsNodeGeometry;
}
static GraphProcessorState handle_comment_node(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
current->type = cybNodeComment;
/* DEBUG("Set node type comment\n"); */
/*cyberiada_copy_string(&(current->title), &(current->title_len), COMMENT_TITLE);*/
return gpsNodeGeometry;
}
static GraphProcessorState handle_generic_node(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_YED_NODE_CONFIG_ATTRIBUTE) == CYBERIADA_NO_ERROR &&
(strcmp(buffer, GRAPHML_YED_NODE_CONFIG_START) == 0 ||
strcmp(buffer, GRAPHML_YED_NODE_CONFIG_START2) == 0)) {
current->type = cybNodeInitial;
if (current->title != NULL) {
ERROR("Trying to set start node %s label twice\n", current->id);
return gpsInvalid;
}
cyberiada_copy_string(&(current->title), &(current->title_len), "");
} else {
current->type = cybNodeSimpleState;
}
return gpsNodeGeometry;
}
static GraphProcessorState handle_node_geometry(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNodeType type;
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
type = current->type;
if (cyberiada_xml_read_rect(xml_node,
&(current->geometry_rect)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
if (type == cybNodeInitial) {
current->geometry_rect->x += current->geometry_rect->width / 2.0;
current->geometry_rect->y += current->geometry_rect->height / 2.0;
current->geometry_rect->width = PSEUDO_NODE_SIZE;
current->geometry_rect->height = PSEUDO_NODE_SIZE;
return gpsNodeStart;
} else if (type == cybNodeComment) {
return gpsNodeAction;
} else {
return gpsNodeTitle;
}
}
static GraphProcessorState handle_property(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_YED_PROP_VALUE_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
if (strcmp(buffer, GRAPHML_YED_PROP_VALUE_START) == 0) {
return gpsGraph;
}
return gpsNodeStart;
}
static GraphProcessorState handle_node_title(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
if (current->title != NULL) {
ERROR("Trying to set node %s label twice\n", current->id);
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
/* DEBUG("Set node %s title %s\n", current->id, buffer); */
cyberiada_copy_string(&(current->title), &(current->title_len), buffer);
return gpsNodeAction;
}
static GraphProcessorState handle_node_action(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("current node invalid\n");
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
if (current->actions != NULL) {
ERROR("Trying to set node %s actions twice\n", current->id);
return gpsInvalid;
}
if (current->type == cybNodeComment) {
/* DEBUG("Set node %s comment text %s\n", current->id, buffer); */
if (current->comment_data != NULL) {
if (current->comment_data->body) {
ERROR("Trying to set node %s body twice\n", current->id);
return gpsInvalid;
}
} else {
current->comment_data = cyberiada_new_comment_data();
}
cyberiada_copy_string(&(current->comment_data->body),
&(current->comment_data->body_len), buffer);
} else {
/* DEBUG("Set node %s action %s\n", current->id, buffer); */
if (cyberiada_decode_state_actions(buffer, &(current->actions)) != CYBERIADA_NO_ERROR) {
ERROR("cannot decode node action\n");
return gpsInvalid;
}
}
return gpsGraph;
}
static GraphProcessorState handle_edge_geometry(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaEdge *current;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
current->geometry_source_point = (CyberiadaPoint*)malloc(sizeof(CyberiadaPoint));
current->geometry_target_point = (CyberiadaPoint*)malloc(sizeof(CyberiadaPoint));
if (cyberiada_xml_read_coord(xml_node,
GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE,
&(current->geometry_source_point->x)) != CYBERIADA_NO_ERROR ||
cyberiada_xml_read_coord(xml_node,
GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE,
&(current->geometry_source_point->y)) != CYBERIADA_NO_ERROR ||
cyberiada_xml_read_coord(xml_node,
GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE,
&(current->geometry_target_point->x)) != CYBERIADA_NO_ERROR ||
cyberiada_xml_read_coord(xml_node,
GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE,
&(current->geometry_target_point->y)) != CYBERIADA_NO_ERROR) {
free(current->geometry_source_point);
free(current->geometry_target_point);
current->geometry_source_point = NULL;
current->geometry_target_point = NULL;
return gpsInvalid;
}
return gpsEdgeGeometry;
}
static GraphProcessorState handle_edge_label(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaEdge *current;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (current->action != NULL) {
ERROR("Trying to set edge %s:%s label twice\n",
current->source_id, current->target_id);
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
/* DEBUG("add edge %s:%s action %s\n",
current->source_id, current->target_id, buffer); */
if (cyberiada_decode_edge_action(buffer, &(current->action)) != CYBERIADA_NO_ERROR) {
ERROR("cannot decode edge action\n");
return gpsInvalid;
}
return gpsGraph;
}
/* -----------------------------------------------------------------------------
* CyberiadaML-specific handlers for the GraphML processor
* ----------------------------------------------------------------------------- */
typedef struct {
const char* name;
CyberiadaNodeType type;
} CyberidaVertex;
CyberidaVertex cyberiada_vertexes[] = {
{ GRAPHML_CYB_GRAPH_VERTEX_INITIAL, cybNodeInitial },
{ GRAPHML_CYB_GRAPH_VERTEX_FINAL, cybNodeFinal },
{ GRAPHML_CYB_GRAPH_VERTEX_CHOICE, cybNodeChoice },
{ GRAPHML_CYB_GRAPH_VERTEX_TERMINATE, cybNodeTerminate },
{ GRAPHML_CYB_GRAPH_VERTEX_SHALLOW_HISTORY, cybNodeShallowHistory },
{ GRAPHML_CYB_GRAPH_VERTEX_DEEP_HISTORY, cybNodeDeepHistory },
{ GRAPHML_CYB_GRAPH_VERTEX_ENTRY_POINT, cybNodeEntryPoint },
{ GRAPHML_CYB_GRAPH_VERTEX_EXIT_POINT, cybNodeExitPoint },
{ GRAPHML_CYB_GRAPH_VERTEX_FORK, cybNodeFork },
{ GRAPHML_CYB_GRAPH_VERTEX_JOIN, cybNodeJoin },
};
static const size_t cyberiada_vertexes_count = sizeof(cyberiada_vertexes) / sizeof(CyberidaVertex);
static const char* cyberiada_init_table_find_id(const char* element, const char* name, size_t* index)
{
size_t i;
for (i = 0; i < cyberiada_graphml_keys_count; i++ ) {
if (strcmp(cyberiada_graphml_keys[i].attr_name, name) == 0 &&
strcmp(cyberiada_graphml_keys[i].attr_for, element) == 0) {
if (index) {
*index = i;
}
return cyberiada_graphml_keys[i].attr_id;
}
}
return NULL;
}
typedef struct {
const char* name;
size_t value_offset;
size_t len_offset;
const char* title;
} MetainfoDeclaration;
static MetainfoDeclaration cyberiada_metadata[] = {
{
CYBERIADA_META_STANDARD_VERSION,
offsetof(CyberiadaMetainformation, standard_version),
offsetof(CyberiadaMetainformation, standard_version_len),
"standard version"
}, {
CYBERIADA_META_PLATFORM_NAME,
offsetof(CyberiadaMetainformation, platform_name),
offsetof(CyberiadaMetainformation, platform_name_len),
"platform name"
}, {
CYBERIADA_META_PLATFORM_VERSION,
offsetof(CyberiadaMetainformation, platform_version),
offsetof(CyberiadaMetainformation, platform_version_len),
"platform version"
}, {
CYBERIADA_META_PLATFORM_LANGUAGE,
offsetof(CyberiadaMetainformation, platform_language),
offsetof(CyberiadaMetainformation, platform_language_len),
"platform language"
}, {
CYBERIADA_META_TARGET_SYSTEM,
offsetof(CyberiadaMetainformation, target_system),
offsetof(CyberiadaMetainformation, target_system_len),
"target system"
}, {
CYBERIADA_META_NAME,
offsetof(CyberiadaMetainformation, name),
offsetof(CyberiadaMetainformation, name_len),
"document name"
}, {
CYBERIADA_META_AUTHOR,
offsetof(CyberiadaMetainformation, author),
offsetof(CyberiadaMetainformation, author_len),
"document author"
}, {
CYBERIADA_META_CONTACT,
offsetof(CyberiadaMetainformation, contact),
offsetof(CyberiadaMetainformation, contact_len),
"document author's contact"
}, {
CYBERIADA_META_DESCRIPTION,
offsetof(CyberiadaMetainformation, description),
offsetof(CyberiadaMetainformation, description_len),
"document description"
}, {
CYBERIADA_META_VERSION,
offsetof(CyberiadaMetainformation, version),
offsetof(CyberiadaMetainformation, version_len),
"document version"
}, {
CYBERIADA_META_DATE,
offsetof(CyberiadaMetainformation, date),
offsetof(CyberiadaMetainformation, date_len),
"document date"
}, {
CYBERIADA_META_MARKUP_LANGUAGE,
offsetof(CyberiadaMetainformation, markup_language),
offsetof(CyberiadaMetainformation, markup_language_len),
"markup language"
}
};
static int cyberiada_add_default_meta(CyberiadaDocument* doc, const char* sm_name)
{
CyberiadaMetainformation* meta;
if (doc->meta_info) {
return CYBERIADA_BAD_PARAMETER;
}
meta = (CyberiadaMetainformation*)malloc(sizeof(CyberiadaMetainformation));
memset(meta, 0, sizeof(CyberiadaMetainformation));
cyberiada_copy_string(&(meta->standard_version),
&(meta->standard_version_len),
CYBERIADA_STANDARD_VERSION_CYBERIADAML);
if (*sm_name) {
cyberiada_copy_string(&(meta->name), &(meta->name_len), sm_name);
}
meta->transition_order_flag = 1;
meta->event_propagation_flag = 1;
doc->meta_info = meta;
return CYBERIADA_NO_ERROR;
}
static int cyberiada_encode_meta(CyberiadaDocument* doc, char** meta_body, size_t* meta_body_len)
{
size_t i, buffer_len;
int written;
char *buffer, *value;
CyberiadaMetainformation* meta = doc->meta_info;
buffer_len = 1;
for (i = 0; i < sizeof(cyberiada_metadata) / sizeof(MetainfoDeclaration); i++) {
value = *((char**)((char*)meta + cyberiada_metadata[i].value_offset));
if (value) {
buffer_len += (strlen(cyberiada_metadata[i].name) +
*(size_t*)((char*)meta + cyberiada_metadata[i].len_offset) +
4);
}
}
buffer_len += (strlen(CYBERIADA_META_TRANSITION_ORDER) +
(meta->transition_order_flag == 1 ? strlen(CYBERIADA_META_AO_TRANSITION) : strlen(CYBERIADA_META_AO_EXIT)) +
strlen(CYBERIADA_META_EVENT_PROPAGATION) +
(meta->event_propagation_flag == 1 ? strlen(CYBERIADA_META_EP_PROPAGATE) : strlen(CYBERIADA_META_EP_BLOCK)) +
8);
buffer = (char*)malloc(buffer_len);
*meta_body = buffer;
for (i = 0; i < sizeof(cyberiada_metadata) / sizeof(MetainfoDeclaration); i++) {
value = *((char**)((char*)meta + cyberiada_metadata[i].value_offset));
if (value) {
written = snprintf(buffer, buffer_len, "%s/ %s\n\n",
cyberiada_metadata[i].name,
value);
buffer_len -= (size_t)written;
buffer += written;
}
}
written = snprintf(buffer, buffer_len, "%s/ %s\n\n",
CYBERIADA_META_TRANSITION_ORDER,
meta->transition_order_flag == 1 ? CYBERIADA_META_AO_TRANSITION : CYBERIADA_META_AO_EXIT);
buffer_len -= (size_t)written;
buffer += written;
written = snprintf(buffer, buffer_len, "%s/ %s\n\n",
CYBERIADA_META_EVENT_PROPAGATION,
meta->event_propagation_flag == 1 ? CYBERIADA_META_EP_PROPAGATE : CYBERIADA_META_EP_BLOCK);
buffer_len -= (size_t)written;
buffer += written;
*buffer = 0;
if (meta_body_len) {
*meta_body_len = strlen(*meta_body);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_meta(CyberiadaDocument* doc, char* metadata)
{
CyberiadaMetainformation* meta;
char *start, *block, *block2, *next, *parts;
size_t i;
char found;
if (doc->meta_info) {
return CYBERIADA_BAD_PARAMETER;
}
meta = (CyberiadaMetainformation*)malloc(sizeof(CyberiadaMetainformation));
memset(meta, 0, sizeof(CyberiadaMetainformation));
next = metadata;
while (*next) {
start = next;
block = strstr(start, CYBERIADA_NEWLINE);
block2 = strstr(start, CYBERIADA_NEWLINE_RN);
if (block2 && ((block && (block > block2)) || !block)) {
block = block2;
*block2 = 0;
next = block2 + 4;
} else if (block) {
*block = 0;
next = block + 2;
} else {
block = start;
next = start + strlen(block);
}
if (regexec(&cyberiada_spaces_regexp, start, 0, NULL, 0) == 0) {
continue;
}
parts = strchr(start, CYBERIADA_META_SEPARATOR_CHR);
if (parts == NULL) {
ERROR("Error decoding SM metainformation: cannot find separator\n");
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
*parts = 0;
do {
parts++;
} while (isspace(*parts));
found = 0;
for (i = 0; i < sizeof(cyberiada_metadata) / sizeof(MetainfoDeclaration); i++) {
if (strcmp(start, cyberiada_metadata[i].name) == 0) {
if (*(char**)((char*)meta + cyberiada_metadata[i].value_offset) != NULL) {
ERROR("Error decoding SM metainformation: double parameter %s\n",
cyberiada_metadata[i].title);
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
cyberiada_copy_string((char**)((char*)meta + cyberiada_metadata[i].value_offset),
(size_t*)((char*)meta + cyberiada_metadata[i].len_offset), parts);
found = 1;
break;
}
}
if (!found) {
if (strcmp(start, CYBERIADA_META_TRANSITION_ORDER) == 0) {
if (strcmp(parts, CYBERIADA_META_AO_TRANSITION) == 0) {
meta->transition_order_flag = 1;
} else if (strcmp(parts, CYBERIADA_META_AO_EXIT) == 0) {
meta->transition_order_flag = 2;
} else {
ERROR("Error decoding SM metainformation: bad value of actions order flag parameter\n");
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
} else if (strcmp(start, CYBERIADA_META_EVENT_PROPAGATION) == 0) {
if (strcmp(parts, CYBERIADA_META_EP_PROPAGATE) == 0) {
meta->event_propagation_flag = 1;
} else if (strcmp(parts, CYBERIADA_META_EP_BLOCK) == 0) {
meta->event_propagation_flag = 2;
} else {
ERROR("Error decoding SM metainformation: bad value of event propagation flag parameter\n");
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
} else {
ERROR("Error decoding SM metainformation: bad key %s\n", start);
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
}
}
if (!meta->standard_version) {
ERROR("Error decoding SM metainformation: standard version is not set\n");
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
if (strcmp(meta->standard_version, CYBERIADA_STANDARD_VERSION_CYBERIADAML) != 0) {
ERROR("Error decoding SM metainformation: unsupported version of Cyberiada standard - %s\n",
meta->standard_version);
cyberiada_destroy_meta(meta);
return CYBERIADA_METADATA_FORMAT_ERROR;
}
// set default values
if (!meta->transition_order_flag) {
meta->transition_order_flag = 1;
}
if (!meta->event_propagation_flag) {
meta->event_propagation_flag = 1;
}
doc->meta_info = meta;
return CYBERIADA_NO_ERROR;
}
static const char* cyberiada_init_table_find_name(const char* id)
{
size_t i;
for (i = 0; i < cyberiada_graphml_keys_count; i++ ) {
if (strcmp(cyberiada_graphml_keys[i].attr_id, id) == 0) {
return cyberiada_graphml_keys[i].attr_name;
}
}
return NULL;
}
static void cyberiada_init_table_free_extensitions(void)
{
size_t i;
for (i = 0; i < cyberiada_graphml_keys_count; i++ ) {
if (cyberiada_graphml_keys[i].extra) {
free(cyberiada_graphml_keys[i].attr_id);
cyberiada_graphml_keys[i].attr_id = cyberiada_graphml_keys[i].extra;
cyberiada_graphml_keys[i].extra = NULL;
}
}
}
static GraphProcessorState handle_new_init_data(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
const char* format_name;
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_KEY_ATTRIBUTE) == CYBERIADA_NO_ERROR) {
format_name = cyberiada_init_table_find_name(buffer);
if (format_name == NULL) {
ERROR("cannot find format key with id %s\n", buffer);
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
if (strcmp(buffer, CYBERIADA_FORMAT_CYBERIADAML) == 0) {
cyberiada_copy_string(&(doc->format), &(doc->format_len),
CYBERIADA_FORMAT_CYBERIADAML);
/* DEBUG("doc format %s\n", doc->format); */
return gpsInit;
} else {
ERROR("Bad Cyberida-GraphML format: %s\n", buffer);
}
} else {
ERROR("No graph version node\n");
}
return gpsInvalid;
}
static GraphProcessorState handle_new_init_key(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
char *attr_id = NULL, *attr_for = NULL, *attr_name = NULL;
const char *table_id;
size_t index;
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_FOR_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
return gpsInit;
}
cyberiada_copy_string(&attr_for, NULL, buffer);
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_NAME_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
free(attr_for);
return gpsInit;
}
cyberiada_copy_string(&attr_name, NULL, buffer);
table_id = cyberiada_init_table_find_id(attr_for, attr_name, &index);
if (table_id) {
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_ID_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
ERROR("Cannot find 'id' attribute of the key node\n");
free(attr_for);
free(attr_name);
return gpsInvalid;
}
cyberiada_copy_string(&attr_id, NULL, buffer);
if (strcmp(table_id, attr_id) != 0) {
cyberiada_graphml_keys[index].extra = cyberiada_graphml_keys[index].attr_id; /* save as modification flag */
cyberiada_graphml_keys[index].attr_id = attr_id;
} else {
free(attr_id);
}
}
free(attr_for);
free(attr_name);
return gpsInit;
}
static GraphProcessorState handle_node_data(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaNode* current = node_stack_current_node(stack);
const char* key_name;
size_t i;
int found;
if (current == NULL) {
ERROR("no current node\n");
return gpsInvalid;
}
if (cyberiada_get_attr_value(buffer, buffer_len,
xml_node,
GRAPHML_KEY_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
ERROR("no data node key attribute\n");
return gpsInvalid;
}
key_name = cyberiada_init_table_find_name(buffer);
if (key_name == NULL) {
ERROR("cannot find key with id %s\n", buffer);
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
/* DEBUG("node id %s data key '%s' value '%s'\n", current->id, key_name, buffer); */
if (strcmp(key_name, GRAPHML_CYB_KEY_NAME_NAME) == 0) {
if (current->title != NULL) {
ERROR("Trying to set node %s label twice\n", current->id);
return gpsInvalid;
}
/* DEBUG("Set node %s title %s\n", current->id, buffer); */
cyberiada_copy_string(&(current->title), &(current->title_len), buffer);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_STATE_MACHINE_NAME) == 0) {
if (current->type != cybNodeSM) {
ERROR("Using state machine key outside the graph element in %s\n", current->id);
return gpsInvalid;
}
return gpsGraph;
} else if (strcmp(key_name, GRAPHML_CYB_KEY_DATA_NAME) == 0) {
if (current->actions != NULL) {
ERROR("Trying to set comment node %s action\n", current->id);
return gpsInvalid;
}
if (current->type == cybNodeComment || current->type == cybNodeFormalComment) {
if (current->type == cybNodeFormalComment &&
current->title && strcmp(current->title, CYBERIADA_META_NODE_TITLE) == 0) {
if (cyberiada_decode_meta(doc, buffer) != CYBERIADA_NO_ERROR) {
ERROR("Error while decoging metainfo comment\n");
return gpsInvalid;
}
}
if (current->comment_data != NULL) {
if (current->comment_data->body) {
ERROR("Trying to set node %s body twice\n", current->id);
return gpsInvalid;
}
} else {
current->comment_data = cyberiada_new_comment_data();
}
cyberiada_copy_string(&(current->comment_data->body),
&(current->comment_data->body_len), buffer);
} else {
/* DEBUG("Set node %s action %s\n", current->id, buffer); */
if (cyberiada_decode_state_actions(buffer, &(current->actions)) != CYBERIADA_NO_ERROR) {
ERROR("Cannot decode node action\n");
return gpsInvalid;
}
}
} else if (strcmp(key_name, GRAPHML_CYB_KEY_VERTEX_NAME) == 0) {
if (current->actions != NULL) {
ERROR("Trying to set the vertex %s action\n", current->id);
return gpsInvalid;
}
found = 0;
for (i = 0; i < cyberiada_vertexes_count; i++) {
if (strcmp(buffer, cyberiada_vertexes[i].name) == 0) {
current->type = cyberiada_vertexes[i].type;
found = 1;
break;
}
}
if (!found) {
ERROR("Unknown vertex type '%s'\n", buffer);
return gpsInvalid;
}
} else if (strcmp(key_name, GRAPHML_CYB_KEY_COMMENT_NAME) == 0) {
if (strcmp(buffer, GRAPHML_CYB_COMMENT_FORMAL) == 0) {
current->type = cybNodeFormalComment;
} else if (strcmp(buffer, GRAPHML_CYB_COMMENT_INFORMAL) == 0 ||
cyberiada_string_is_empty(buffer)) { /* default */
current->type = cybNodeComment;
} else {
ERROR("Bad comment type '%s'\n", buffer);
return gpsInvalid;
}
} else if (strcmp(key_name, GRAPHML_CYB_KEY_COLOR_NAME) == 0) {
if (current->color) {
ERROR("Trying to set node %s color twice\n", current->id);
return gpsInvalid;
}
cyberiada_copy_string(&(current->color), &(current->color_len), buffer);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_MARKUP_NAME) == 0) {
if (current->type != cybNodeComment) {
ERROR("Trying to set markup for non-comment node %s\n", current->id);
return gpsInvalid;
}
if (current->comment_data != NULL) {
if (current->comment_data->markup) {
ERROR("Trying to set node %s markup twice\n", current->id);
return gpsInvalid;
}
} else {
current->comment_data = cyberiada_new_comment_data();
}
cyberiada_copy_string(&(current->comment_data->markup),
&(current->comment_data->markup_len), buffer);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_SUBMACHINE_NAME) == 0) {
if (current->link != NULL) {
ERROR("Trying to set submachine node %s link twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_string_is_empty(buffer)) {
ERROR("Empty link in the submachine state node %s\n", current->id);
return gpsInvalid;
}
current->link = cyberiada_new_link(buffer);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_GEOMETRY_NAME) == 0) {
return gpsNodeGeometry;
} else {
ERROR("Bad data key attribute '%s'\n", key_name);
return gpsInvalid;
}
return gpsNode;
}
static GraphProcessorState handle_node_point(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("no current node\n");
return gpsInvalid;
}
if (current->geometry_point) {
ERROR("Trying to set node %s geometry point twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_xml_read_point(xml_node,
&(current->geometry_point)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
return gpsNode;
}
static GraphProcessorState handle_node_rect(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaNode* current = node_stack_current_node(stack);
if (current == NULL) {
ERROR("no current node\n");
return gpsInvalid;
}
if (current->geometry_rect) {
ERROR("Trying to set node %s geometry rect twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_xml_read_rect(xml_node,
&(current->geometry_rect)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
return gpsNode;
}
static GraphProcessorState handle_edge_data(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
CyberiadaEdge *current;
const char* key_name;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (cyberiada_get_attr_value(buffer, buffer_len, xml_node,
GRAPHML_KEY_ATTRIBUTE) != CYBERIADA_NO_ERROR) {
ERROR("no data node key attribute\n");
return gpsInvalid;
}
key_name = cyberiada_init_table_find_name(buffer);
if (key_name == NULL) {
ERROR("cannot find key with id %s\n", buffer);
return gpsInvalid;
}
cyberiada_get_element_text(buffer, buffer_len, xml_node);
if (strcmp(key_name, GRAPHML_CYB_KEY_DATA_NAME) == 0) {
if (current->action != NULL) {
ERROR("Trying to set edge %s action twice\n", current->id);
return gpsInvalid;
}
/* DEBUG("Set edge %s action %s\n", current->id, buffer); */
if (cyberiada_decode_edge_action(buffer, &(current->action)) != CYBERIADA_NO_ERROR) {
ERROR("cannot decode edge action\n");
return gpsInvalid;
}
} else if (strcmp(key_name, GRAPHML_CYB_KEY_GEOMETRY_NAME) == 0) {
return gpsEdgeGeometry;
} else if (strcmp(key_name, GRAPHML_CYB_KEY_SOURCE_POINT_NAME) == 0) {
return gpsEdgeSourcePoint;
} else if (strcmp(key_name, GRAPHML_CYB_KEY_TARGET_POINT_NAME) == 0) {
return gpsEdgeTargetPoint;
} else if (strcmp(key_name, GRAPHML_CYB_KEY_LABEL_GEOMETRY_NAME) == 0) {
return gpsEdgeLabelGeometry;
} else if (strcmp(key_name, GRAPHML_CYB_KEY_COLOR_NAME) == 0) {
cyberiada_copy_string(&(current->color), &(current->color_len), buffer);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_COMMENT_SUBJECT_NAME) == 0) {
if (current->comment_subject) {
ERROR("Trying to set edge %s comment subject twice\n", current->id);
return gpsInvalid;
}
current->type = cybEdgeComment;
if (cyberiada_string_is_empty(buffer)) {
current->comment_subject = cyberiada_new_comment_subject(cybCommentSubjectNode);
} else {
key_name = cyberiada_init_table_find_name(buffer);
if (key_name == NULL) {
ERROR("cannot find pivot key with id %s\n", buffer);
return gpsInvalid;
}
if (strcmp(key_name, GRAPHML_CYB_KEY_NAME_NAME) == 0) {
current->comment_subject = cyberiada_new_comment_subject(cybCommentSubjectNameFragment);
} else if (strcmp(key_name, GRAPHML_CYB_KEY_DATA_NAME) == 0) {
current->comment_subject = cyberiada_new_comment_subject(cybCommentSubjectDataFragment);
} else {
ERROR("Unsupported edge comment subject type %s\n", key_name);
return gpsInvalid;
}
}
} else if (strcmp(key_name, GRAPHML_CYB_KEY_COMMENT_CHUNK_NAME) == 0) {
if (!current->comment_subject) {
ERROR("Edge %s comment subject is empty\n", current->id);
return gpsInvalid;
}
if (current->comment_subject->type == cybCommentSubjectNameFragment ||
current->comment_subject->type == cybCommentSubjectDataFragment) {
if (current->comment_subject->fragment) {
ERROR("Trying to set edge %s comment subject fragent twice", current->id);
return gpsInvalid;
}
cyberiada_copy_string(&(current->comment_subject->fragment),
&(current->comment_subject->fragment_len),
buffer);
}
} else {
ERROR("bad data key attribute %s\n", key_name);
return gpsInvalid;
}
return gpsEdge;
}
static GraphProcessorState handle_edge_source_point(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaEdge *current;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (current->geometry_source_point) {
ERROR("Trying to set edge %s source point twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_xml_read_point(xml_node,
&(current->geometry_source_point)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
return gpsEdge;
}
static GraphProcessorState handle_edge_target_point(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaEdge *current;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (current->geometry_target_point) {
ERROR("Trying to set edge %s target point twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_xml_read_point(xml_node,
&(current->geometry_target_point)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
return gpsEdge;
}
static GraphProcessorState handle_edge_label_point(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack)
{
CyberiadaEdge *current;
CyberiadaSM* sm = doc->state_machines;
while (sm->next) sm = sm->next;
current = cyberiada_graph_find_last_edge(sm);
if (current == NULL) {
ERROR("no current edge\n");
return gpsInvalid;
}
if (current->geometry_label_point) {
ERROR("Trying to set edge %s geometry label point twice\n", current->id);
return gpsInvalid;
}
if (cyberiada_xml_read_point(xml_node,
&(current->geometry_label_point)) != CYBERIADA_NO_ERROR) {
return gpsInvalid;
}
return gpsEdge;
}
typedef GraphProcessorState (*GraphProcessorHandler)(xmlNode* xml_root,
CyberiadaDocument* doc,
NodeStack** stack);
typedef struct {
GraphProcessorState state;
const char* symbol;
GraphProcessorHandler handler;
} ProcessorTransition;
static ProcessorTransition cyb_processor_state_table[] = {
{gpsInit, GRAPHML_DATA_ELEMENT, &handle_new_init_data},
{gpsInit, GRAPHML_KEY_ELEMENT, &handle_new_init_key},
{gpsInit, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsGraph, GRAPHML_NODE_ELEMENT, &handle_new_node},
{gpsGraph, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsGraph, GRAPHML_DATA_ELEMENT, &handle_node_data},
{gpsNode, GRAPHML_DATA_ELEMENT, &handle_node_data},
{gpsNode, GRAPHML_NODE_ELEMENT, &handle_new_node},
{gpsNode, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsNode, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsEdge, GRAPHML_DATA_ELEMENT, &handle_edge_data},
{gpsEdge, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsEdge, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsNodeGeometry, GRAPHML_POINT_ELEMENT, &handle_node_point},
{gpsNodeGeometry, GRAPHML_RECT_ELEMENT, &handle_node_rect},
{gpsEdgeGeometry, GRAPHML_POINT_ELEMENT, &handle_edge_point},
{gpsEdgeGeometry, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsEdgeGeometry, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsEdgeSourcePoint, GRAPHML_POINT_ELEMENT, &handle_edge_source_point},
{gpsEdgeTargetPoint, GRAPHML_POINT_ELEMENT, &handle_edge_target_point},
{gpsEdgeLabelGeometry, GRAPHML_POINT_ELEMENT, &handle_edge_label_point},
};
const size_t cyb_processor_state_table_size = sizeof(cyb_processor_state_table) / sizeof(ProcessorTransition);
static ProcessorTransition yed_processor_state_table[] = {
{gpsInit, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsGraph, GRAPHML_NODE_ELEMENT, &handle_new_node},
{gpsGraph, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsGraph, GRAPHML_GRAPH_ELEMENT, &handle_new_graph},
{gpsNode, GRAPHML_YED_COMMENTNODE, &handle_comment_node},
{gpsNode, GRAPHML_YED_GROUPNODE, &handle_group_node},
{gpsNode, GRAPHML_YED_GENERICNODE, &handle_generic_node},
{gpsNodeGeometry, GRAPHML_YED_GEOMETRYNODE, &handle_node_geometry},
{gpsNodeStart, GRAPHML_YED_PROPNODE, &handle_property},
{gpsNodeStart, GRAPHML_NODE_ELEMENT, &handle_new_node},
{gpsNodeTitle, GRAPHML_YED_LABELNODE, &handle_node_title},
{gpsNodeAction, GRAPHML_YED_LABELNODE, &handle_node_action},
{gpsNodeAction, GRAPHML_NODE_ELEMENT, &handle_new_node},
{gpsEdge, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
{gpsEdge, GRAPHML_YED_PATHNODE, &handle_edge_geometry},
{gpsEdgeGeometry, GRAPHML_YED_POINTNODE, &handle_edge_point},
{gpsEdgeGeometry, GRAPHML_YED_EDGELABEL, &handle_edge_label},
{gpsEdgeGeometry, GRAPHML_EDGE_ELEMENT, &handle_new_edge},
};
const size_t yed_processor_state_table_size = sizeof(yed_processor_state_table) / sizeof(ProcessorTransition);
static int dispatch_processor(xmlNode* xml_node,
CyberiadaDocument* doc,
NodeStack** stack,
GraphProcessorState* gps,
ProcessorTransition* processor_state_table,
size_t processor_state_table_size)
{
size_t i;
if (xml_node->type == XML_ELEMENT_NODE) {
const char* xml_element_name = (const char*)xml_node->name;
node_stack_set_top_element(stack, xml_element_name);
for (i = 0; i < processor_state_table_size; i++) {
if (processor_state_table[i].state == *gps &&
strcmp(xml_element_name, processor_state_table[i].symbol) == 0) {
*gps = (*(processor_state_table[i].handler))(xml_node, doc, stack);
return CYBERIADA_NO_ERROR;
}
}
}
return CYBERIADA_NOT_FOUND;
}
static int cyberiada_build_graphs(xmlNode* xml_root,
CyberiadaDocument* doc,
NodeStack** stack,
GraphProcessorState* gps,
ProcessorTransition* processor_state_table,
size_t processor_state_table_size)
{
xmlNode *cur_xml_node = NULL;
/* NodeStack* s = *stack; */
/* DEBUG("\nStack:"); */
/* while (s) { */
/* DEBUG(" (%s %p)", */
/* s->xml_element ? s->xml_element : "null", */
/* s->node); */
/* s = s->next; */
/* } */
/* DEBUG("\n"); */
for (cur_xml_node = xml_root; cur_xml_node; cur_xml_node = cur_xml_node->next) {
/* DEBUG("xml node %s sm root %s gps %s\n",
cur_xml_node->name,
sm->nodes ? sm->nodes->id : "none",
debug_state_names[*gps]); */
node_stack_push(stack);
dispatch_processor(cur_xml_node, doc, stack, gps,
processor_state_table, processor_state_table_size);
if (*gps == gpsInvalid) {
return CYBERIADA_FORMAT_ERROR;
}
if (cur_xml_node->children) {
int res = cyberiada_build_graphs(cur_xml_node->children, doc, stack, gps,
processor_state_table, processor_state_table_size);
if (res != CYBERIADA_NO_ERROR) {
return res;
}
}
node_stack_pop(stack);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_yed_xml(xmlNode* root, CyberiadaDocument* doc)
{
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
GraphProcessorState gps = gpsInit;
CyberiadaNode* node = NULL;
NodeStack* stack = NULL;
char berloga_format = 0;
int res;
char* sm_name;
if (cyberiada_get_attr_value(buffer, buffer_len,
root,
GRAPHML_BERLOGA_SCHEMENAME_ATTR) == CYBERIADA_NO_ERROR) {
cyberiada_copy_string(&(doc->format), &(doc->format_len), CYBERIADA_FORMAT_BERLOGA);
berloga_format = 1;
} else {
cyberiada_copy_string(&(doc->format), &(doc->format_len), CYBERIADA_FORMAT_OSTRANNA);
berloga_format = 0;
}
/* DEBUG("doc format %s\n", doc->format); */
if ((res = cyberiada_build_graphs(root, doc, &stack, &gps,
yed_processor_state_table,
yed_processor_state_table_size)) != CYBERIADA_NO_ERROR) {
return res;
}
if (!node_stack_empty(&stack)) {
ERROR("error with node stack\n");
node_stack_free(&stack);
return CYBERIADA_FORMAT_ERROR;
}
if (berloga_format) {
sm_name = buffer;
} else {
if (doc->state_machines->nodes) {
node = cyberiada_graph_find_node_by_type(doc->state_machines->nodes, cybNodeCompositeState);
}
if (node) {
sm_name = node->title;
} else {
sm_name = EMPTY_TITLE;
}
}
cyberiada_add_default_meta(doc, sm_name);
if (doc->state_machines->nodes && !doc->state_machines->nodes->title) {
cyberiada_copy_string(&(doc->state_machines->nodes->title),
&(doc->state_machines->nodes->title_len),
sm_name);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_update_complex_state(CyberiadaNode* node, CyberiadaNode* parent)
{
if (parent && parent->type == cybNodeSimpleState &&
node->type != cybNodeComment && node->type != cybNodeFormalComment) {
parent->type = cybNodeCompositeState;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_decode_cyberiada_xml(xmlNode* root, CyberiadaDocument* doc)
{
GraphProcessorState gps = gpsInit;
CyberiadaSM* sm;
NodeStack* stack = NULL;
int res;
/* CyberiadaNode *meta_node, *ext_node;
CyberiadaEdge *edge, *prev_edge;*/
if ((res = cyberiada_build_graphs(root, doc, &stack, &gps,
cyb_processor_state_table,
cyb_processor_state_table_size)) != CYBERIADA_NO_ERROR) {
cyberiada_init_table_free_extensitions();
return res;
}
if (!node_stack_empty(&stack)) {
ERROR("error with node stack\n");
cyberiada_stack_free(&stack);
cyberiada_init_table_free_extensitions();
return CYBERIADA_FORMAT_ERROR;
}
/* update composite node types */
for (sm = doc->state_machines; sm; sm = sm->next) {
cyberiada_process_graph(sm->nodes, NULL, &cyberiada_update_complex_state);
}
/*meta_node = cyberiada_graph_find_node_by_id(sm->nodes, "");
if (meta_node == NULL) {
ERROR("meta node not found\n");
return CYBERIADA_FORMAT_ERROR;
}*/
/* check extension nodes and remove non-visible nodes & edges */
/*if (sm->edges) {
prev_edge = NULL;
edge = sm->edges;
do {
if (*(edge->source_id) == 0) {
ext_node = cyberiada_graph_find_node_by_id(sm->nodes, edge->target_id);
cyberiada_graph_add_extension(sm, ext_node->id, ext_node->title, ext_node->action);
if (cyberiada_remove_node(sm, ext_node) != CYBERIADA_NO_ERROR) {
ERROR("cannot remove ext node %s\n", edge->target_id);
return CYBERIADA_ASSERT;
}
cyberiada_destroy_node(ext_node);
if (prev_edge == NULL) {
sm->edges = edge->next;
} else {
prev_edge->next = edge->next;
}
edge->next = NULL;
cyberiada_destroy_edge(edge);
} else {
prev_edge = edge;
}
edge = edge->next;
} while (edge);
}
if (cyberiada_remove_node(sm, meta_node) != CYBERIADA_NO_ERROR) {
ERROR("cannot remove meta node\n");
return CYBERIADA_ASSERT;
}
cyberiada_destroy_node(meta_node);
*/
cyberiada_init_table_free_extensitions();
return CYBERIADA_NO_ERROR;
}
static int cyberiada_check_graphml_ns(xmlNode* root, CyberiadaXMLFormat* format)
{
xmlNs* ns;
int graphml_found = 0;
int yed_found = 0;
if (!root || !(ns = root->nsDef)) {
ERROR("bad GraphML XML NS: null ns ptr\n");
return CYBERIADA_XML_ERROR;
}
do {
if (strcmp((const char*)ns->href, GRAPHML_NAMESPACE_URI) == 0) {
graphml_found = 1;
} else if (strcmp((const char*)ns->href, GRAPHML_NAMESPACE_URI_YED) == 0) {
yed_found = 1;
}
ns = ns->next;
} while (ns);
if (!graphml_found) {
ERROR("no GraphML XML NS href\n");
return CYBERIADA_XML_ERROR;
}
if (*format == cybxmlUnknown) {
if (yed_found) {
*format = cybxmlYED;
} else {
*format = cybxmlCyberiada10;
}
} else if (*format == cybxmlYED && !yed_found) {
ERROR("no GraphML YED NS href\n");
return CYBERIADA_XML_ERROR;
}
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* GraphML reader interface
* ----------------------------------------------------------------------------- */
int cyberiada_read_sm_document(CyberiadaDocument* cyb_doc, const char* filename, CyberiadaXMLFormat format)
{
int res;
xmlDoc* doc = NULL;
xmlNode* root = NULL;
CyberiadaSM* sm;
NamesList* nl = NULL;
cyberiada_init_sm_document(cyb_doc);
/* parse the file and get the DOM */
if ((doc = xmlReadFile(filename, NULL, 0)) == NULL) {
ERROR("error: could not parse file %s\n", filename);
return CYBERIADA_XML_ERROR;
}
cyberiada_init_action_regexps();
do {
/* get the root element node */
root = xmlDocGetRootElement(doc);
if (strcmp((const char*)root->name, GRAPHML_GRAPHML_ELEMENT) != 0) {
ERROR("error: could not find GraphML root node %s\n", filename);
res = CYBERIADA_XML_ERROR;
break;
}
/* check whether the xml is graphml */
if (cyberiada_check_graphml_ns(root, &format)) {
ERROR("error: no valid graphml namespace in %s\n", filename);
res = CYBERIADA_XML_ERROR;
break;
}
cyb_doc->state_machines = cyberiada_create_sm();
/* DEBUG("reading format %d\n", format); */
if (format == cybxmlYED) {
res = cyberiada_decode_yed_xml(root, cyb_doc);
} else if (format == cybxmlCyberiada10) {
res = cyberiada_decode_cyberiada_xml(root, cyb_doc);
} else {
ERROR("error: unsupported GraphML format of file %s\n",
filename);
res = CYBERIADA_XML_ERROR;
break;
}
if (res != CYBERIADA_NO_ERROR) {
break;
}
for (sm = cyb_doc->state_machines; sm; sm = sm->next) {
if ((res = cyberiada_graphs_reconstruct_nodes(sm->nodes, &nl)) != CYBERIADA_NO_ERROR) {
ERROR("error: cannot reconstruct graph nodes file %s\n",
filename);
break;
}
}
if ((res = cyberiada_graphs_reconstruct_edges(cyb_doc, &nl)) != CYBERIADA_NO_ERROR) {
ERROR("error: cannot reconstruct graph edges from file %s\n",
filename);
break;
}
} while(0);
cyberiada_free_name_list(&nl);
cyberiada_free_action_regexps();
xmlFreeDoc(doc);
xmlCleanupParser();
return res;
}
/* -----------------------------------------------------------------------------
* Printing functions
* ----------------------------------------------------------------------------- */
static int cyberiada_print_meta(CyberiadaMetainformation* meta)
{
size_t i;
char* value;
printf("Meta information:\n");
if (meta) {
for (i = 0; i < sizeof(cyberiada_metadata) / sizeof(MetainfoDeclaration); i++) {
value = *((char**)((char*)meta + cyberiada_metadata[i].value_offset));
if (value) {
printf(" %s: %s\n", cyberiada_metadata[i].title, value);
}
}
if (meta->transition_order_flag) {
printf(" trantision order flag: %d\n", meta->transition_order_flag);
}
if (meta->event_propagation_flag) {
printf(" event propagation flag: %d\n", meta->event_propagation_flag);
}
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_print_action(CyberiadaAction* action, int level)
{
char levelspace[16];
int i;
memset(levelspace, 0, sizeof(levelspace));
for(i = 0; i < level; i++) {
if (i == 14) break;
levelspace[i] = ' ';
}
printf("%sActions:\n", levelspace);
while (action) {
printf("%s Action (type %d):\n", levelspace, action->type);
if(action->trigger) {
printf("%s Trigger: \"%s\"\n", levelspace, action->trigger);
}
if(action->guard) {
printf("%s Guard: \"%s\"\n", levelspace, action->guard);
}
if(action->behavior) {
printf("%s Behavior: \"%s\"\n", levelspace, action->behavior);
}
action = action->next;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_print_node(CyberiadaNode* node, int level)
{
CyberiadaNode* cur_node;
char levelspace[16];
int i;
memset(levelspace, 0, sizeof(levelspace));
for(i = 0; i < level; i++) {
if (i == 14) break;
levelspace[i] = ' ';
}
printf("%sNode {id: %s, title: \"%s\", type: %d",
levelspace, node->id, node->title, (int)node->type);
printf("}\n");
if (node->color) {
printf("%sColor: %s\n", levelspace, node->color);
}
if (node->type == cybNodeSM ||
node->type == cybNodeSimpleState ||
node->type == cybNodeCompositeState ||
node->type == cybNodeSubmachineState ||
node->type == cybNodeComment ||
node->type == cybNodeChoice) {
if (node->type == cybNodeSubmachineState && node->link && node->link->ref) {
printf("%sLink to SM: %s\n", levelspace, node->link->ref);
} else if (node->type == cybNodeComment && node->comment_data) {
printf("%sComment data [markup: %s]:\n", levelspace,
node->comment_data->markup ? node->comment_data->markup : "");
printf("%s%s\n", levelspace, node->comment_data->body);
}
if (node->geometry_rect) {
printf("%sGeometry: (%lf, %lf, %lf, %lf)\n",
levelspace,
node->geometry_rect->x,
node->geometry_rect->y,
node->geometry_rect->width,
node->geometry_rect->height);
}
} else {
if (node->geometry_point) {
printf("%sGeometry: (%lf, %lf)\n",
levelspace,
node->geometry_point->x,
node->geometry_point->y);
}
}
cyberiada_print_action(node->actions, level + 1);
printf("%sChildren:\n", levelspace);
for (cur_node = node->children; cur_node; cur_node = cur_node->next) {
cyberiada_print_node(cur_node, level + 1);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_print_edge(CyberiadaEdge* edge)
{
CyberiadaPolyline* polyline;
printf(" Edge %s [%s %s]->[%s %s] [type %d]\n",
edge->id,
edge->source_id,
edge->source->type == cybNodeInitial ? "INIT" : edge->source->title,
edge->target_id,
edge->target->type == cybNodeInitial ? "INIT" : edge->target->title,
edge->type);
if (edge->color) {
printf(" Color: %s\n", edge->color);
}
if (edge->comment_subject) {
printf(" Comment subject [type: %d]\n", edge->comment_subject->type);
if (edge->comment_subject->fragment) {
printf(" Fragment: %s\n", edge->comment_subject->fragment);
}
}
printf(" Geometry: ");
if (edge->geometry_polyline) {
printf(" Polyline:");
for (polyline = edge->geometry_polyline; polyline; polyline = polyline->next) {
printf(" (%lf, %lf)", polyline->point.x, polyline->point.y);
}
printf("\n");
}
if (edge->geometry_source_point) {
printf(" Source point: (%lf, %lf)\n",
edge->geometry_source_point->x,
edge->geometry_source_point->y);
}
if (edge->geometry_target_point) {
printf(" Target point: (%lf, %lf)\n",
edge->geometry_target_point->x,
edge->geometry_target_point->y);
}
if (edge->geometry_label_point) {
printf(" Label point: (%lf, %lf)\n",
edge->geometry_label_point->x,
edge->geometry_label_point->y);
}
cyberiada_print_action(edge->action, 2);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_print_sm(CyberiadaSM* sm)
{
CyberiadaNode* cur_node;
CyberiadaEdge* cur_edge;
printf("State Machine\n");
printf("Nodes:\n");
for (cur_node = sm->nodes; cur_node; cur_node = cur_node->next) {
cyberiada_print_node(cur_node, 0);
}
printf("\n");
printf("Edges:\n");
for (cur_edge = sm->edges; cur_edge; cur_edge = cur_edge->next) {
cyberiada_print_edge(cur_edge);
}
printf("\n");
/*if (sm->extensions) {
printf("Extensions:\n");
for (cur_ext = sm->extensions; cur_ext; cur_ext = cur_ext->next) {
cyberiada_print_extension(cur_ext);
}
printf("\n");
}*/
return CYBERIADA_NO_ERROR;
}
int cyberiada_print_sm_document(CyberiadaDocument* doc)
{
CyberiadaSM* sm;
printf("\nDocument:\n");
cyberiada_print_meta(doc->meta_info);
for (sm = doc->state_machines; sm; sm = sm->next) {
cyberiada_print_sm(sm);
}
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* CyberiadaML format writer
* ----------------------------------------------------------------------------- */
static int cyberiada_write_action_text(xmlTextWriterPtr writer, CyberiadaAction* action)
{
int res;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
while (action) {
if (*(action->trigger) || *(action->behavior) || *(action->guard)) {
if (*(action->trigger)) {
if (action->type != cybActionTransition) {
snprintf(buffer, buffer_len, "%s/", action->trigger);
} else {
if (*(action->guard)) {
snprintf(buffer, buffer_len, "%s [%s]/", action->trigger, action->guard);
} else {
snprintf(buffer, buffer_len, "%s/", action->trigger);
}
}
XML_WRITE_TEXT(writer, buffer);
if (action->next || *(action->behavior)) {
XML_WRITE_TEXT(writer, "\n");
}
} else {
if (*(action->behavior)) {
XML_WRITE_TEXT(writer, "/\n");
} else if (action->next) {
XML_WRITE_TEXT(writer, "\n");
}
}
if (*(action->behavior)) {
XML_WRITE_TEXT(writer, action->behavior);
XML_WRITE_TEXT(writer, "\n");
}
if (action->next) {
XML_WRITE_TEXT(writer, "\n");
}
}
action = action->next;
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_geometry_rect_cyberiada(xmlTextWriterPtr writer, CyberiadaRect* rect, size_t indent)
{
int res;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
XML_WRITE_OPEN_E_I(writer, GRAPHML_RECT_ELEMENT, indent);
snprintf(buffer, buffer_len, "%lf", rect->x);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_X_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->y);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_Y_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->width);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_WIDTH_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->height);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_HEIGHT_ATTRIBUTE, buffer);
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_geometry_point_cyberiada(xmlTextWriterPtr writer, CyberiadaPoint* point, size_t indent)
{
int res;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
XML_WRITE_OPEN_E_I(writer, GRAPHML_POINT_ELEMENT, indent);
snprintf(buffer, buffer_len, "%lf", point->x);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_X_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", point->y);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_Y_ATTRIBUTE, buffer);
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_node_cyberiada(xmlTextWriterPtr writer, CyberiadaNode* node, size_t indent)
{
int res, found;
CyberiadaNode* cur_node;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
size_t i;
XML_WRITE_OPEN_E_I(writer, GRAPHML_NODE_ELEMENT, indent);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, node->id);
if (node->type == cybNodeSM) {
ERROR("Embedded SM node %s not supported\n", node->id);
return CYBERIADA_BAD_PARAMETER;
} else if (node->type == cybNodeComment || node->type == cybNodeFormalComment) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_COMMENT);
if (node->type == cybNodeFormalComment) {
XML_WRITE_TEXT(writer, GRAPHML_CYB_COMMENT_FORMAL);
} else {
XML_WRITE_TEXT(writer, GRAPHML_CYB_COMMENT_INFORMAL);
}
XML_WRITE_CLOSE_E(writer);
} else if (node->type == cybNodeSubmachineState) {
if (!node->link || !node->link->ref) {
ERROR("Submachine state %s has no link\n", node->id);
return CYBERIADA_BAD_PARAMETER;
}
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_SUBMACHINE);
XML_WRITE_TEXT(writer, node->link->ref);
XML_WRITE_CLOSE_E(writer);
} else if (node->type != cybNodeSimpleState && node->type != cybNodeCompositeState) {
found = 0;
for (i = 0; i < cyberiada_vertexes_count; i++) {
if (node->type == cyberiada_vertexes[i].type) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_VERTEX);
XML_WRITE_TEXT(writer, cyberiada_vertexes[i].name);
XML_WRITE_CLOSE_E(writer);
found = 1;
break;
}
}
if (!found) {
ERROR("Unsupported node type %d\n", node->type);
return CYBERIADA_BAD_PARAMETER;
}
}
if (node->title) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_NAME);
XML_WRITE_TEXT(writer, node->title);
XML_WRITE_CLOSE_E(writer);
}
if ((node->type == cybNodeComment || node->type == cybNodeFormalComment) && node->comment_data) {
if (node->comment_data->body) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_DATA);
XML_WRITE_TEXT(writer, node->comment_data->body);
XML_WRITE_CLOSE_E(writer);
}
if (node->comment_data->markup) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_MARKUP);
XML_WRITE_TEXT(writer, node->comment_data->markup);
XML_WRITE_CLOSE_E(writer);
}
}
if (node->actions) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_DATA);
cyberiada_write_action_text(writer, node->actions);
XML_WRITE_CLOSE_E(writer);
}
if (node->geometry_rect) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_GEOMETRY);
if ((res = cyberiada_write_geometry_rect_cyberiada(writer,
node->geometry_rect,
indent + 2)) != CYBERIADA_NO_ERROR) {
ERROR("Cannot write node %s geometry rect\n", node->id);
return res;
}
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (node->geometry_point) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_GEOMETRY);
if ((res = cyberiada_write_geometry_point_cyberiada(writer,
node->geometry_point,
indent + 2)) != CYBERIADA_NO_ERROR) {
ERROR("Cannot write node %s geometry point\n", node->id);
return res;
}
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (node->color) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_COLOR);
XML_WRITE_TEXT(writer, node->color);
XML_WRITE_CLOSE_E(writer);
}
if (node->type == cybNodeCompositeState) {
/* the root graph element */
XML_WRITE_OPEN_E_I(writer, GRAPHML_GRAPH_ELEMENT, indent + 1);
snprintf(buffer, buffer_len, "%s:", node->id);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, buffer);
XML_WRITE_ATTR(writer, GRAPHML_EDGEDEFAULT_ATTRIBUTE, GRAPHML_EDGEDEFAULT_ATTRIBUTE_VALUE);
for (cur_node = node->children; cur_node; cur_node = cur_node->next) {
res = cyberiada_write_node_cyberiada(writer, cur_node, indent + 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing node %s\n", cur_node->id);
return CYBERIADA_XML_ERROR;
}
}
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
XML_WRITE_CLOSE_E_I(writer, indent);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_edge_cyberiada(xmlTextWriterPtr writer, CyberiadaEdge* edge, size_t indent)
{
int res;
/* char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;*/
CyberiadaPolyline* pl;
if (!edge->id) {
ERROR("SM edge %s -> %s w/o id\n", edge->source_id, edge->target_id);
return CYBERIADA_BAD_PARAMETER;
}
XML_WRITE_OPEN_E_I(writer, GRAPHML_EDGE_ELEMENT, indent);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, edge->id);
XML_WRITE_ATTR(writer, GRAPHML_SOURCE_ATTRIBUTE, edge->source_id);
XML_WRITE_ATTR(writer, GRAPHML_TARGET_ATTRIBUTE, edge->target_id);
if (edge->action) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_DATA);
cyberiada_write_action_text(writer, edge->action);
XML_WRITE_CLOSE_E(writer);
}
if (edge->type == cybEdgeComment && edge->comment_subject) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_COMMENT_SUBJECT);
if (edge->comment_subject->type == cybCommentSubjectNameFragment) {
XML_WRITE_TEXT(writer, GRAPHML_CYB_KEY_NAME);
} else if (edge->comment_subject->type == cybCommentSubjectDataFragment) {
XML_WRITE_TEXT(writer, GRAPHML_CYB_KEY_DATA);
}
XML_WRITE_CLOSE_E(writer);
if (edge->comment_subject->fragment) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_COMMENT_CHUNK);
XML_WRITE_TEXT(writer, edge->comment_subject->fragment);
XML_WRITE_CLOSE_E(writer);
}
}
/* XML_WRITE_OPEN_E_I(writer, GRAPHML_YED_PATHNODE, indent + 3); */
/* if (edge->geometry_source_point && edge->geometry_target_point) { */
/* snprintf(buffer, buffer_len, "%lf", edge->geometry_source_point->x); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE, buffer); */
/* snprintf(buffer, buffer_len, "%lf", edge->geometry_source_point->y); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE, buffer); */
/* snprintf(buffer, buffer_len, "%lf", edge->geometry_target_point->x); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE, buffer); */
/* snprintf(buffer, buffer_len, "%lf", edge->geometry_target_point->y); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE, buffer); */
/* } else { */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE, "0"); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE, "0"); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE, "0"); */
/* XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE, "0"); */
/* } */
if (edge->geometry_polyline) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_GEOMETRY);
pl = edge->geometry_polyline;
do {
cyberiada_write_geometry_point_cyberiada(writer, &(pl->point), indent + 2);
pl = pl->next;
} while (pl);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (edge->geometry_source_point) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_SOURCE_POINT);
cyberiada_write_geometry_point_cyberiada(writer, edge->geometry_source_point, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (edge->geometry_target_point) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_TARGET_POINT);
cyberiada_write_geometry_point_cyberiada(writer, edge->geometry_target_point, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (edge->geometry_label_point) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_LABEL_GEOMETRY);
cyberiada_write_geometry_point_cyberiada(writer, edge->geometry_label_point, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
if (edge->color) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_COLOR);
XML_WRITE_TEXT(writer, edge->color);
XML_WRITE_CLOSE_E(writer);
}
XML_WRITE_CLOSE_E_I(writer, indent);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_sm_cyberiada(CyberiadaSM* sm, xmlTextWriterPtr writer)
{
int res;
CyberiadaNode* cur_node;
CyberiadaEdge* cur_edge;
if (!sm->nodes) {
ERROR("SM node is required\n");
return CYBERIADA_BAD_PARAMETER;
}
if (!sm->nodes->id) {
ERROR("SM node id is required\n");
return CYBERIADA_BAD_PARAMETER;
}
if (!sm->nodes->title) {
ERROR("SM node title is required\n");
return CYBERIADA_BAD_PARAMETER;
}
/* the root graph element */
XML_WRITE_OPEN_E_I(writer, GRAPHML_GRAPH_ELEMENT, 1);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, sm->nodes->id);
XML_WRITE_ATTR(writer, GRAPHML_EDGEDEFAULT_ATTRIBUTE, GRAPHML_EDGEDEFAULT_ATTRIBUTE_VALUE);
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, 2);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_NAME);
XML_WRITE_TEXT(writer, sm->nodes->title);
XML_WRITE_CLOSE_E(writer);
/* write nodes */
for (cur_node = sm->nodes->children; cur_node; cur_node = cur_node->next) {
res = cyberiada_write_node_cyberiada(writer, cur_node, 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing node %s\n", cur_node->id);
return CYBERIADA_XML_ERROR;
}
}
/* write edges */
for (cur_edge = sm->edges; cur_edge; cur_edge = cur_edge->next) {
res = cyberiada_write_edge_cyberiada(writer, cur_edge, 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing edge %s\n", cur_edge->id);
return CYBERIADA_XML_ERROR;
}
}
XML_WRITE_CLOSE_E_I(writer, 1);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_update_metainfo_comment(CyberiadaDocument* doc)
{
CyberiadaNode *sm_node, *first_node, *meta_node;
if (!doc->state_machines) {
/* empty doc */
return CYBERIADA_NO_ERROR;
}
sm_node = doc->state_machines->nodes;
if (sm_node->type != cybNodeSM||
sm_node->next != NULL) {
ERROR("Inconsistem SM node\n");
return CYBERIADA_BAD_PARAMETER;
}
first_node = sm_node->children;
if (first_node &&
first_node->type == cybNodeFormalComment &&
first_node->title &&
strcmp(first_node->title, CYBERIADA_META_NODE_TITLE) == 0) {
if (first_node->comment_data) {
if (first_node->comment_data->body) {
free(first_node->comment_data->body);
first_node->comment_data->body = NULL;
first_node->comment_data->body_len = 0;
}
} else {
first_node->comment_data = cyberiada_new_comment_data();
}
meta_node = first_node;
} else {
meta_node = cyberiada_new_node(CYBERIADA_META_NODE_DEFAULT_ID);
meta_node->type = cybNodeFormalComment;
meta_node->comment_data = cyberiada_new_comment_data();
cyberiada_copy_string(&(meta_node->title),
&(meta_node->title_len),
CYBERIADA_META_NODE_TITLE);
sm_node->children = meta_node;
meta_node->next = first_node;
}
cyberiada_encode_meta(doc,
&(meta_node->comment_data->body),
&(meta_node->comment_data->body_len));
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_sm_document_cyberiada(CyberiadaDocument* doc, xmlTextWriterPtr writer)
{
int res;
size_t i;
GraphMLKey* key;
CyberiadaSM* sm;
if (!doc->format) {
cyberiada_copy_string(&(doc->format),
&(doc->format_len),
CYBERIADA_FORMAT_CYBERIADAML);
}
cyberiada_update_metainfo_comment(doc);
XML_WRITE_OPEN_E(writer, GRAPHML_GRAPHML_ELEMENT);
XML_WRITE_ATTR(writer, "xmlns", GRAPHML_NAMESPACE_URI);
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_CYB_KEY_FORMAT);
XML_WRITE_TEXT(writer, CYBERIADA_FORMAT_CYBERIADAML);
XML_WRITE_CLOSE_E(writer);
/* write graphml keys */
for (i = 0; i < cyberiada_graphml_keys_count; i++) {
key = cyberiada_graphml_keys + i;
XML_WRITE_OPEN_E_I(writer, GRAPHML_KEY_ELEMENT, 1);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, key->attr_id);
XML_WRITE_ATTR(writer, GRAPHML_FOR_ATTRIBUTE, key->attr_for);
XML_WRITE_ATTR(writer, GRAPHML_ATTR_NAME_ATTRIBUTE, key->attr_name);
if (key->attr_type) {
XML_WRITE_ATTR(writer, GRAPHML_ATTR_TYPE_ATTRIBUTE, key->attr_type);
}
XML_WRITE_CLOSE_E(writer);
}
for (sm = doc->state_machines; sm; sm = sm->next) {
if ((res = cyberiada_write_sm_cyberiada(sm, writer)) != CYBERIADA_NO_ERROR) {
ERROR("Error while writing SM: %d\n", res);
return res;
}
}
XML_WRITE_CLOSE_E_I(writer, 0);
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* Legacy YED format writer
* ----------------------------------------------------------------------------- */
#define GRAPHML_YED_NS "y"
#define GRAPHML_YED_ROOT_GRAPH_ID "G"
static const char* yed_graphml_attributes[] = {
"xmlns", "http://graphml.graphdrawing.org/xmlns",
"xmlns:java", "http://www.yworks.com/xml/yfiles-common/1.0/java",
"xmlns:sys", "http://www.yworks.com/xml/yfiles-common/markup/primitives/2.0",
"xmlns:x", "http://www.yworks.com/xml/yfiles-common/markup/2.0",
"xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance",
"xmlns:y", "http://www.yworks.com/xml/graphml",
"xmlns:yed", "http://www.yworks.com/xml/yed/3",
"yed:schemaLocation", "http://graphml.graphdrawing.org/xmlns http://www.yworks.com/xml/schema/graphml/1.1/ygraphml.xsd"
};
const size_t yed_graphml_attributes_count = (sizeof(yed_graphml_attributes) / sizeof(const char*));
static int cyberiada_write_node_style_yed(xmlTextWriterPtr writer, CyberiadaNodeType type, size_t indent)
{
int res;
if (type == cybNodeCompositeState) {
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_FILLNODE, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "color", "#E8EEF7");
XML_WRITE_ATTR(writer, "color2", "#B7C9E3");
XML_WRITE_ATTR(writer, "transparent", "false");
XML_WRITE_CLOSE_E(writer);
} else if (type == cybNodeInitial) {
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_FILLNODE, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "color", "#333333");
XML_WRITE_ATTR(writer, "color2", "#000000");
XML_WRITE_ATTR(writer, "transparent", "false");
XML_WRITE_CLOSE_E(writer);
} else if (type == cybNodeCompositeState) {
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_FILLNODE, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "color", "#F5F5F5");
XML_WRITE_ATTR(writer, "transparent", "false");
XML_WRITE_CLOSE_E(writer);
}
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_BORDERSTYLENODE, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "color", "#000000");
XML_WRITE_ATTR(writer, "type", "line");
XML_WRITE_ATTR(writer, "width", "1.0");
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_node_title_yed(xmlTextWriterPtr writer, const char* title, size_t indent)
{
int res;
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_LABELNODE, GRAPHML_YED_NS, indent);
if (*title) {
XML_WRITE_ATTR(writer, "alignment", "center");
XML_WRITE_ATTR(writer, "backgroundColor", "#EBEBEB");
XML_WRITE_ATTR(writer, "fontSize", "15");
XML_WRITE_ATTR(writer, "fontStyle", "bold");
XML_WRITE_ATTR(writer, "textColor", "#000000");
XML_WRITE_ATTR(writer, "xml:space", "preserve");
XML_WRITE_ATTR(writer, "hasLineColor", "false");
XML_WRITE_ATTR(writer, "visible", "true");
XML_WRITE_ATTR(writer, "horizontalTextPosition", "center");
XML_WRITE_ATTR(writer, "verticalTextPosition", "top");
XML_WRITE_ATTR(writer, "autoSizePolicy", "node_width");
XML_WRITE_ATTR(writer, "y", "0");
XML_WRITE_ATTR(writer, "height", "20");
XML_WRITE_ATTR(writer, "configuration", "com.yworks.entityRelationship.label.name");
XML_WRITE_ATTR(writer, "modelName", "internal");
XML_WRITE_ATTR(writer, "modelPosition", "t");
XML_WRITE_TEXT(writer, title);
}
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_node_action_yed(xmlTextWriterPtr writer, CyberiadaAction* action, size_t indent)
{
int res;
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_LABELNODE, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "alignment", "left");
XML_WRITE_ATTR(writer, "hasBackgroundColor", "false");
XML_WRITE_ATTR(writer, "fontSize", "12");
XML_WRITE_ATTR(writer, "fontStyle", "plain");
XML_WRITE_ATTR(writer, "textColor", "#000000");
XML_WRITE_ATTR(writer, "xml:space", "preserve");
XML_WRITE_ATTR(writer, "hasLineColor", "false");
XML_WRITE_ATTR(writer, "visible", "true");
XML_WRITE_ATTR(writer, "horizontalTextPosition", "center");
XML_WRITE_ATTR(writer, "verticalTextPosition", "bottom");
XML_WRITE_ATTR(writer, "autoSizePolicy", "node_size");
XML_WRITE_TEXT(writer, "\n");
XML_WRITE_TEXT(writer, "\n");
if (cyberiada_write_action_text(writer, action) != CYBERIADA_NO_ERROR) {
ERROR("error while writing node bevavior text\n");
return CYBERIADA_XML_ERROR;
}
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_edge_action_yed(xmlTextWriterPtr writer, CyberiadaAction* action, size_t indent)
{
int res;
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_EDGELABEL, GRAPHML_YED_NS, indent);
XML_WRITE_ATTR(writer, "alignment", "center");
XML_WRITE_ATTR(writer, "fontSize", "12");
XML_WRITE_ATTR(writer, "fontStyle", "plain");
XML_WRITE_ATTR(writer, "textColor", "#000000");
XML_WRITE_ATTR(writer, "backgroundColor", "#F5F5F5");
XML_WRITE_ATTR(writer, "configuration", "AutoFlippingLabel");
XML_WRITE_ATTR(writer, "distance", "2.0");
XML_WRITE_ATTR(writer, "hasLineColor", "false");
XML_WRITE_ATTR(writer, "visible", "true");
XML_WRITE_ATTR(writer, "xml:space", "preserve");
XML_WRITE_ATTR(writer, "modelName", "centered");
XML_WRITE_ATTR(writer, "modelPosition", "center");
XML_WRITE_ATTR(writer, "preferredPlacement", "center_on_edge");
if (cyberiada_write_action_text(writer, action) != CYBERIADA_NO_ERROR) {
ERROR("error while writing node bevavior text\n");
return CYBERIADA_XML_ERROR;
}
/* <y:PreferredPlacementDescriptor angle="0.0" angleOffsetOnRightSide="0" angleReference="absolute" angleRotationOnRightSide="co" distance="-1.0" placement="center" side="on_edge" sideReference="relative_to_edge_flow" /></y:EdgeLabel>
*/
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_geometry_yed(xmlTextWriterPtr writer, CyberiadaRect* rect, size_t indent)
{
int res;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_GEOMETRYNODE, GRAPHML_YED_NS, indent);
snprintf(buffer, buffer_len, "%lf", rect->x);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_X_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->y);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_Y_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->width);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_WIDTH_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", rect->height);
XML_WRITE_ATTR(writer, GRAPHML_GEOM_HEIGHT_ATTRIBUTE, buffer);
XML_WRITE_CLOSE_E(writer);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_node_yed(xmlTextWriterPtr writer, CyberiadaNode* node, size_t indent)
{
int res;
CyberiadaNode* cur_node;
const char* text;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
if (node->type == cybNodeSM) {
for (cur_node = node->children; cur_node; cur_node = cur_node->next) {
res = cyberiada_write_node_yed(writer, cur_node, indent);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing root node %s\n", cur_node->id);
return CYBERIADA_XML_ERROR;
}
}
} else {
XML_WRITE_OPEN_E_I(writer, GRAPHML_NODE_ELEMENT, indent);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, node->id);
if (node->type == cybNodeInitial) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_NODE_GRAPHICS);
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_GENERICNODE, GRAPHML_YED_NS, indent + 2);
XML_WRITE_ATTR(writer, "configuration", GRAPHML_YED_NODE_CONFIG_START2);
if (node->geometry_rect) {
if (cyberiada_write_geometry_yed(writer, node->geometry_rect, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing initial node geometry\n");
return CYBERIADA_XML_ERROR;
}
if (cyberiada_write_node_style_yed(writer, node->type, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing initial node style\n");
return CYBERIADA_XML_ERROR;
}
}
if (node->title) {
if (cyberiada_write_node_title_yed(writer, node->title, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing initial node label\n");
return CYBERIADA_XML_ERROR;
}
}
XML_WRITE_CLOSE_E_I(writer, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
} else if (node->type == cybNodeSimpleState) {
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_NODE_GRAPHICS);
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_GENERICNODE, GRAPHML_YED_NS, indent + 2);
if (node->geometry_rect) {
if (cyberiada_write_geometry_yed(writer, node->geometry_rect, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node geometry\n");
return CYBERIADA_XML_ERROR;
}
if (cyberiada_write_node_style_yed(writer, node->type, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node style\n");
return CYBERIADA_XML_ERROR;
}
}
text = node->title;
if (!text) text = "";
if (cyberiada_write_node_title_yed(writer, text, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing simple node label\n");
return CYBERIADA_XML_ERROR;
}
if (cyberiada_write_node_action_yed(writer, node->actions, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing simple node action\n");
return CYBERIADA_XML_ERROR;
}
XML_WRITE_CLOSE_E_I(writer, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
} else if (node->type == cybNodeCompositeState) {
XML_WRITE_ATTR(writer, "yfiles.foldertype", "group");
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_NODE_DESCR);
XML_WRITE_ATTR(writer, "xml:space", "preserve");
XML_WRITE_CLOSE_E(writer);
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_NODE_GRAPHICS);
XML_WRITE_OPEN_E_NS_I(writer, "ProxyAutoBoundsNode", GRAPHML_YED_NS, indent + 2);
XML_WRITE_OPEN_E_NS_I(writer, "Realizers", GRAPHML_YED_NS, indent + 3);
XML_WRITE_ATTR(writer, "active", "0");
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_GROUPNODE, GRAPHML_YED_NS, indent + 4);
if (node->geometry_rect) {
if (cyberiada_write_geometry_yed(writer, node->geometry_rect, indent + 5) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node geometry\n");
return CYBERIADA_XML_ERROR;
}
if (cyberiada_write_node_style_yed(writer, node->type, indent + 5) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node style\n");
return CYBERIADA_XML_ERROR;
}
}
text = node->title;
if (!text) text = "";
if (cyberiada_write_node_title_yed(writer, text, indent + 5) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node label\n");
return CYBERIADA_XML_ERROR;
}
if (cyberiada_write_node_action_yed(writer, node->actions, indent + 5) != CYBERIADA_NO_ERROR) {
ERROR("error while writing composite node action\n");
return CYBERIADA_XML_ERROR;
}
XML_WRITE_OPEN_E_NS_I(writer, "Shape", GRAPHML_YED_NS, indent + 5);
XML_WRITE_ATTR(writer, "type", "roundrectangle");
XML_WRITE_CLOSE_E(writer);
XML_WRITE_CLOSE_E_I(writer, indent + 4);
XML_WRITE_CLOSE_E_I(writer, indent + 3);
XML_WRITE_CLOSE_E_I(writer, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
/* the root graph element */
XML_WRITE_OPEN_E_I(writer, GRAPHML_GRAPH_ELEMENT, indent + 1);
snprintf(buffer, buffer_len, "%s:", node->id);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, buffer);
XML_WRITE_ATTR(writer, GRAPHML_EDGEDEFAULT_ATTRIBUTE, GRAPHML_EDGEDEFAULT_ATTRIBUTE_VALUE);
for (cur_node = node->children; cur_node; cur_node = cur_node->next) {
res = cyberiada_write_node_yed(writer, cur_node, indent + 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing node %s\n", cur_node->id);
return CYBERIADA_XML_ERROR;
}
}
XML_WRITE_CLOSE_E_I(writer, indent + 1);
}
XML_WRITE_CLOSE_E_I(writer, indent);
}
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_edge_yed(xmlTextWriterPtr writer, CyberiadaEdge* edge, size_t indent)
{
int res;
char buffer[MAX_STR_LEN];
size_t buffer_len = sizeof(buffer) - 1;
XML_WRITE_OPEN_E_I(writer, GRAPHML_EDGE_ELEMENT, indent);
XML_WRITE_ATTR(writer, GRAPHML_SOURCE_ATTRIBUTE, edge->source_id);
XML_WRITE_ATTR(writer, GRAPHML_TARGET_ATTRIBUTE, edge->target_id);
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, indent + 1);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_EDGE_GRAPHICS);
XML_WRITE_OPEN_E_I(writer, GRAPHML_YED_POLYLINEEDGE, indent + 2);
XML_WRITE_OPEN_E_I(writer, GRAPHML_YED_PATHNODE, indent + 3);
if (edge->geometry_source_point && edge->geometry_target_point) {
snprintf(buffer, buffer_len, "%lf", edge->geometry_source_point->x);
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", edge->geometry_source_point->y);
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", edge->geometry_target_point->x);
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE, buffer);
snprintf(buffer, buffer_len, "%lf", edge->geometry_target_point->y);
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE, buffer);
} else {
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_X_ATTRIBUTE, "0");
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_SOURCE_Y_ATTRIBUTE, "0");
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_X_ATTRIBUTE, "0");
XML_WRITE_ATTR(writer, GRAPHML_YED_GEOM_TARGET_Y_ATTRIBUTE, "0");
}
XML_WRITE_CLOSE_E(writer);
XML_WRITE_OPEN_E_NS_I(writer, GRAPHML_YED_LINESTYLENODE, GRAPHML_YED_NS, indent + 3);
XML_WRITE_ATTR(writer, "color", "#000000");
XML_WRITE_ATTR(writer, "type", "line");
XML_WRITE_ATTR(writer, "width", "1.0");
XML_WRITE_CLOSE_E(writer);
XML_WRITE_OPEN_E_NS_I(writer, "Arrows", GRAPHML_YED_NS, indent + 3);
XML_WRITE_ATTR(writer, "source", "none");
XML_WRITE_ATTR(writer, "target", "standard");
XML_WRITE_CLOSE_E(writer);
if (cyberiada_write_edge_action_yed(writer, edge->action, indent + 3) != CYBERIADA_NO_ERROR) {
ERROR("error while writing edge action\n");
return CYBERIADA_XML_ERROR;
}
XML_WRITE_CLOSE_E_I(writer, indent + 2);
XML_WRITE_CLOSE_E_I(writer, indent + 1);
XML_WRITE_CLOSE_E_I(writer, indent);
return CYBERIADA_NO_ERROR;
}
static int cyberiada_write_sm_document_yed(CyberiadaDocument* doc, xmlTextWriterPtr writer)
{
size_t i;
int res;
GraphMLKey* key;
CyberiadaNode* cur_node;
CyberiadaEdge* cur_edge;
CyberiadaSM* sm = doc->state_machines;
XML_WRITE_OPEN_E(writer, GRAPHML_GRAPHML_ELEMENT);
/* add YED graphml attributes */
for (i = 0; i < yed_graphml_attributes_count; i += 2) {
XML_WRITE_ATTR(writer, yed_graphml_attributes[i], yed_graphml_attributes[i + 1]);
}
/* add scheme name if it is available */
if (doc->meta_info && doc->meta_info->name && *doc->meta_info->name) {
XML_WRITE_ATTR(writer, GRAPHML_BERLOGA_SCHEMENAME_ATTR, doc->meta_info->name);
}
/* write graphml keys */
for (i = 0; i < yed_graphml_keys_count; i++) {
key = yed_graphml_keys + i;
XML_WRITE_OPEN_E_I(writer, GRAPHML_KEY_ELEMENT, 1);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, key->attr_id);
XML_WRITE_ATTR(writer, GRAPHML_FOR_ATTRIBUTE, key->attr_for);
if (key->attr_name && key->attr_type) {
XML_WRITE_ATTR(writer, GRAPHML_ATTR_NAME_ATTRIBUTE, key->attr_name);
XML_WRITE_ATTR(writer, GRAPHML_ATTR_TYPE_ATTRIBUTE, key->attr_type);
}
if (key->extra) {
XML_WRITE_ATTR(writer, GRAPHML_YED_YFILES_TYPE_ATTR, key->extra);
}
XML_WRITE_CLOSE_E(writer);
}
/* the root graph element */
XML_WRITE_OPEN_E_I(writer, GRAPHML_GRAPH_ELEMENT, 1);
XML_WRITE_ATTR(writer, GRAPHML_ID_ATTRIBUTE, GRAPHML_YED_ROOT_GRAPH_ID);
XML_WRITE_ATTR(writer, GRAPHML_EDGEDEFAULT_ATTRIBUTE, GRAPHML_EDGEDEFAULT_ATTRIBUTE_VALUE);
XML_WRITE_OPEN_E_I(writer, GRAPHML_DATA_ELEMENT, 2);
XML_WRITE_ATTR(writer, GRAPHML_KEY_ATTRIBUTE, GRAPHML_YED_KEY_GRAPH_DESCR);
XML_WRITE_ATTR(writer, "xml:space", "preserve");
XML_WRITE_CLOSE_E(writer);
/* write nodes */
for (cur_node = sm->nodes; cur_node; cur_node = cur_node->next) {
res = cyberiada_write_node_yed(writer, cur_node, 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing node %s\n", cur_node->id);
return CYBERIADA_XML_ERROR;
}
}
/* write edges */
for (cur_edge = sm->edges; cur_edge; cur_edge = cur_edge->next) {
res = cyberiada_write_edge_yed(writer, cur_edge, 2);
if (res != CYBERIADA_NO_ERROR) {
ERROR("error while writing edge %s\n", cur_edge->id);
return CYBERIADA_XML_ERROR;
}
}
XML_WRITE_CLOSE_E_I(writer, 1);
XML_WRITE_CLOSE_E_I(writer, 0);
return CYBERIADA_NO_ERROR;
}
/* -----------------------------------------------------------------------------
* GraphML writer interface
* ----------------------------------------------------------------------------- */
int cyberiada_write_sm_document(CyberiadaDocument* doc, const char* filename, CyberiadaXMLFormat format)
{
xmlTextWriterPtr writer;
int res;
if (format != cybxmlCyberiada10 && format != cybxmlYED) {
ERROR("unsupported SM format for write: %d\n", format);
return CYBERIADA_BAD_PARAMETER;
}
if (!doc) {
ERROR("empty SM document to write\n");
return CYBERIADA_BAD_PARAMETER;
}
writer = xmlNewTextWriterFilename(filename, 0);
if (!writer) {
ERROR("cannot open xml writter for file %s\n", filename);
return CYBERIADA_XML_ERROR;
}
res = xmlTextWriterStartDocument(writer, NULL, GRAPHML_XML_ENCODING, NULL);
if (res < 0) {
ERROR("error writing xml start document: %d\n", res);
xmlFreeTextWriter(writer);
return CYBERIADA_XML_ERROR;
}
if (format == cybxmlYED) {
if (!doc->state_machines || doc->state_machines->next) {
ERROR("YED format supports only single SM documents\n");
xmlFreeTextWriter(writer);
return CYBERIADA_BAD_PARAMETER;
}
res = cyberiada_write_sm_document_yed(doc, writer);
} else if (format == cybxmlCyberiada10) {
res = cyberiada_write_sm_document_cyberiada(doc, writer);
}
if (res != CYBERIADA_NO_ERROR) {
ERROR("error writing xml %d\n", res);
xmlFreeTextWriter(writer);
return CYBERIADA_XML_ERROR;
}
res = xmlTextWriterEndDocument(writer);
if (res < 0) {
ERROR("error writing xml end document: %d\n", res);
xmlFreeTextWriter(writer);
return CYBERIADA_XML_ERROR;
}
xmlFreeTextWriter(writer);
return CYBERIADA_NO_ERROR;
}
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