main.c

一个用于智能手机的多媒体库适合S60 WinCE的跨平台开发库

/*
 *			GPAC - Multimedia Framework C SDK
 *
 *			Copyright (c) Cyril Concolato 2004-2005
 *					All rights reserved
 *
 *  This file is part of GPAC / SVG Scene Graph Generator sub-project
 *
 *  GPAC 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 2, or (at your option)
 *  any later version.
 *   
 *  GPAC 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 Lesser General Public
 *  License along with this library; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *
 */

#include "svggen.h"

SVGGenAttribute *NewSVGGenAttribute()
{
	SVGGenAttribute *att;
	GF_SAFEALLOC(att, SVGGenAttribute)
	return att;
}

void deleteSVGGenAttribute(SVGGenAttribute **p)
{
	xmlFree((*p)->svg_name);
	xmlFree((*p)->svg_type);
	free(*p);
	*p = NULL;
}

SVGGenAttrGrp *NewSVGGenAttrGrp()
{
	SVGGenAttrGrp *tmp;
	GF_SAFEALLOC(tmp, SVGGenAttrGrp)
	tmp->attrs = gf_list_new();
	tmp->attrgrps = gf_list_new();
	return tmp;
}

SVGGenElement *NewSVGGenElement() 
{
	SVGGenElement *elt;
	GF_SAFEALLOC(elt, SVGGenElement);
	if (elt) {
		elt->attributes = gf_list_new();
		elt->generic_attributes = gf_list_new();
	}
	return elt;
}

void deleteSVGGenElement(SVGGenElement **p)
{
	u32 i;
	xmlFree((*p)->svg_name);
	for (i = 0; i < gf_list_count((*p)->attributes); i++) {
		SVGGenAttribute *a = gf_list_get((*p)->attributes, i);
		deleteSVGGenAttribute(&a);
	}
	gf_list_del((*p)->attributes);
	free(*p);
	*p = NULL;
}

static GF_List *sortElements(GF_List *elements)
{
	u32 i, j;
	GF_List *sorted_elements = gf_list_new();

	for (i = 0; i< gf_list_count(elements); i++) {
		u8 is_added = 0;
		SVGGenElement *elt = gf_list_get(elements, i);
		for (j = 0; j < gf_list_count(sorted_elements); j++) {
			SVGGenElement *selt = gf_list_get(sorted_elements, j);
			if (strcmp(elt->svg_name, selt->svg_name) < 0) {
				gf_list_insert(sorted_elements, elt, j);
				is_added = 1;
				break;
			}
		}
		if (!is_added) gf_list_add(sorted_elements, elt);
	}

	gf_list_del(elements);
	return sorted_elements;
}

static GF_List *sortAttrGrp(GF_List *attgrps)
{
	u32 i, j;
	GF_List *sorted_attgrps = gf_list_new();

	for (i = 0; i< gf_list_count(attgrps); i++) {
		u8 is_added = 0;
		SVGGenAttrGrp *grp = gf_list_get(attgrps, i);
		for (j = 0; j < gf_list_count(sorted_attgrps); j++) {
			SVGGenAttrGrp *sgrp = gf_list_get(sorted_attgrps, j);
			if (strcmp(grp->name, sgrp->name) < 0) {
				gf_list_insert(sorted_attgrps, grp, j);
				is_added = 1;
				break;
			}
		}
		if (!is_added) gf_list_add(sorted_attgrps, grp);
	}

	gf_list_del(attgrps);
	return sorted_attgrps;
}

static GF_List *sortAttr(GF_List *atts)
{
	u32 i, j;
	GF_List *sorted_atts = gf_list_new();

	for (i = 0; i< gf_list_count(atts); i++) {
		u8 is_added = 0;
		SVGGenAttribute *att = gf_list_get(atts, i);
		for (j = 0; j < gf_list_count(sorted_atts); j++) {
			SVGGenAttribute *satt = gf_list_get(sorted_atts, j);
			if (strcmp(att->svg_name, satt->svg_name) < 0) {
				gf_list_insert(sorted_atts, att, j);
				is_added = 1;
				break;
			}
		}
		if (!is_added) gf_list_add(sorted_atts, att);
	}

	gf_list_del(atts);
	return sorted_atts;
}

void svgNameToImplementationName(xmlChar *svg_name, char implementation_name[50]) {
	char *tmp;
	strcpy(implementation_name, svg_name);
	tmp = implementation_name;
	while ( (tmp = strchr(tmp, '.')) ) { *tmp='_'; tmp++; }
	tmp = implementation_name;
	while ( (tmp = strchr(tmp, '-')) ) { *tmp='_'; tmp++; }
	tmp = implementation_name;
	while ( (tmp = strchr(tmp, ':')) ) { *tmp='_'; tmp++; }
}

static Bool isGenericAttributesGroup(char *name) 
{
	if (!strcmp(name, "svg.Core.attr") ||
		!strcmp(name, "svg.CorePreserve.attr") ||
		!strcmp(name, "svg.External.attr") ||
		!strcmp(name, "svg.Properties.attr") ||
		!strcmp(name, "svg.Media.attr") ||
		!strcmp(name, "svg.MediaClip.attr") ||
		!strcmp(name, "svg.Opacity.attr") ||
		!strcmp(name, "svg.FocusHighlight.attr") || 
		!strcmp(name, "svg.Focus.attr") ||
		!strcmp(name, "svg.AnimateCommon.attr") ||
		!strcmp(name, "svg.XLinkEmbed.attr") ||
		!strcmp(name, "svg.XLinkRequired.attr") ||
		!strcmp(name, "svg.XLinkReplace.attr") ||
//		!strcmp(name, "svg.ContentType.attr") ||
		!strcmp(name, "svg.AnimateTiming.attr") ||
		!strcmp(name, "svg.AnimateTimingNoMinMax.attr") ||
		!strcmp(name, "svg.AnimateBegin.attr") || 
		!strcmp(name, "svg.AnimateTimingNoFillNoMinMax.attr") ||
		!strcmp(name, "svg.AnimateSync.attr") ||
		!strcmp(name, "svg.AnimateSyncDefault.attr") ||
		!strcmp(name, "svg.AnimateAttributeCommon.attr") ||
		!strcmp(name, "svg.AnimateToCommon.attr") ||
		!strcmp(name, "svg.AnimateValueCommon.attr") ||
		!strcmp(name, "svg.AnimateAdditionCommon.attr") ||
		!strcmp(name, "svg.AnimateTypeCommon.attr") ||
		!strcmp(name, "svg.Conditional.attr") ||
//		!strcmp(name, "svg.XY.attr") ||
		!strcmp(name, "svg.Transform.attr")) {
		return 1;
	} else {
		return 0;
	}
}

static Bool setGenericAttributesFlags(char *name, SVGGenElement *e) 
{
	Bool ret = 1;
	if (!strcmp(name, "svg.Core.attr") ||
		!strcmp(name, "svg.CorePreserve.attr") ||
		!strcmp(name, "svg.External.attr")) {
		e->has_svg_generic = 1; 
		e->has_xml_generic = 1;
	} else if (!strcmp(name, "svg.Properties.attr")) {
		e->has_properties = 1;
		e->has_media_properties = 1;
	} else if (!strcmp(name, "svg.Media.attr")) {
		e->has_media_properties = 1;
	} else if (!strcmp(name, "svg.Opacity.attr")) {
		e->has_opacity_properties = 1;
	} else if (!strcmp(name, "svg.FocusHighlight.attr") || 
		       !strcmp(name, "svg.Focus.attr")) {
		e->has_focus = 1;
	} else if (!strcmp(name, "svg.AnimateCommon.attr") ||
			   !strcmp(name, "svg.XLinkEmbed.attr") ||
			   !strcmp(name, "svg.XLinkRequired.attr") ||
			   !strcmp(name, "svg.XLinkReplace.attr")) { //||
//			   !strcmp(name, "svg.ContentType.attr")) {
		e->has_xlink = 1;
	} else if (!strcmp(name, "svg.AnimateTiming.attr") ||
			   !strcmp(name, "svg.AnimateTimingNoMinMax.attr") ||
			   !strcmp(name, "svg.AnimateBegin.attr") || 
			   !strcmp(name, "svg.AnimateTimingNoFillNoMinMax.attr")) {
		e->has_timing = 1;
	} else if (!strcmp(name, "svg.AnimateSync.attr") ||
		       !strcmp(name, "svg.AnimateSyncDefault.attr")) {
		e->has_sync= 1;
	} else if (!strcmp(name, "svg.AnimateAttributeCommon.attr") ||
			   !strcmp(name, "svg.AnimateToCommon.attr") ||
			   !strcmp(name, "svg.AnimateValueCommon.attr") ||
			   !strcmp(name, "svg.AnimateAdditionCommon.attr") ||
			   !strcmp(name, "svg.AnimateTypeCommon.attr")) {
		e->has_animation = 1;
	} else if (!strcmp(name, "svg.Conditional.attr")) {
		e->has_conditional = 1;
	} else if (!strcmp(name, "svg.Transform.attr")) {
		e->has_transform = 1;
	} else if (!strcmp(name, "svg.XY.attr")) {
		e->has_xy = 1;
	} else {
		ret = 0;
	}
	return ret;
}

static void flattenAttributeGroup(SVGGenAttrGrp attgrp, SVGGenElement *e, Bool all);

static void flattenAttributeGroups(GF_List *attrgrps, SVGGenElement *e, Bool all) 
{
	u32 i;
	for (i = 0; i < gf_list_count(attrgrps); i ++) {
		SVGGenAttrGrp *ag = gf_list_get(attrgrps, i);
		flattenAttributeGroup(*ag, e, all);
	} 
}

static void flattenAttributeGroup(SVGGenAttrGrp attgrp, SVGGenElement *e, Bool all) 
{
	u32 i;

	if (isGenericAttributesGroup(attgrp.name) && !all) {
		setGenericAttributesFlags(attgrp.name, e);
		flattenAttributeGroups(attgrp.attrgrps, e, 1);
		for (i = 0; i < gf_list_count(attgrp.attrs); i++) {
			gf_list_add(e->generic_attributes, gf_list_get(attgrp.attrs, i));
		}
	} else {
		flattenAttributeGroups(attgrp.attrgrps, e, all);
		for (i = 0; i < gf_list_count(attgrp.attrs); i++) {
			if (all) 
				gf_list_add(e->generic_attributes, gf_list_get(attgrp.attrs, i));
			else 
				gf_list_add(e->attributes, gf_list_get(attgrp.attrs, i));
		}
	}
}

SVGGenAttribute *findAttribute(SVGGenElement *e, char *name) 
{
	u32 i;
	for (i = 0; i < gf_list_count(e->attributes); i++) {
		SVGGenAttribute *a = gf_list_get(e->attributes, i);
		if (!strcmp(a->svg_name, name)) return a;
	}
	for (i = 0; i < gf_list_count(e->generic_attributes); i++) {
		SVGGenAttribute *a = gf_list_get(e->generic_attributes, i);
		if (!strcmp(a->svg_name, name)) return a;
	}
	return NULL;
}

static u32 countAttributesAllInGroup(SVGGenAttrGrp *ag)
{
	u32 i, ret = 0;
	for (i = 0; i < gf_list_count(ag->attrgrps); i ++) {
		SVGGenAttrGrp *agtmp = gf_list_get(ag->attrgrps, i);
		ret += countAttributesAllInGroup(agtmp);
	} 
	ret += gf_list_count(ag->attrs);
	return ret;
}

/* XML related functions */
xmlNodeSetPtr findNodes( xmlXPathContextPtr ctxt, xmlChar * path ) 
{
    xmlXPathObjectPtr res = NULL;
  
    if ( ctxt->node != NULL && path != NULL ) {
        xmlXPathCompExprPtr comp;

        xmlDocPtr tdoc = NULL;
        xmlNodePtr froot = ctxt->node;

        comp = xmlXPathCompile( path );
        if ( comp == NULL ) {
            return NULL;
        }