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/*
* attribute-rel-svg.cpp
*
* Created on: Jul 25, 2011
* Author: abhishek
*/
/** \class SPAttributeRelSVG
*
* SPAttributeRelSVG class stores the mapping of element->attribute
* relationship and provides a static function to access that
* mapping indirectly(only reading).
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <fstream>
#include <sstream>
#include "attribute-rel-svg.h"
#include "path-prefix.h"
#include "preferences.h"
SPAttributeRelSVG * SPAttributeRelSVG::instance = NULL;
bool SPAttributeRelSVG::foundFile = false;
/*
* This function returns true if element is an SVG element.
*/
bool SPAttributeRelSVG::isSVGElement(Glib::ustring element)
{
if (SPAttributeRelSVG::instance == NULL) {
SPAttributeRelSVG::instance = new SPAttributeRelSVG();
}
// Always valid if data file not found!
if( !foundFile ) return true;
// Strip off "svg:" from the element's name
Glib::ustring temp = element;
if ( temp.find("svg:") != std::string::npos ) {
temp.erase( temp.find("svg:"), 4 );
}
return (SPAttributeRelSVG::instance->attributesOfElements.count(temp) > 0);
}
/*
* This functions checks whether an element -> attribute pair is allowed or not
*/
bool SPAttributeRelSVG::findIfValid(Glib::ustring attribute, Glib::ustring element)
{
if (SPAttributeRelSVG::instance == NULL) {
SPAttributeRelSVG::instance = new SPAttributeRelSVG();
}
// Always valid if data file not found!
if( !foundFile ) return true;
// Strip off "svg:" from the element's name
Glib::ustring temp = element;
if ( temp.find("svg:") != std::string::npos ) {
temp.erase( temp.find("svg:"), 4 );
}
// Check for attributes with -, role, aria etc. to allow for more accessbility
if (attribute[0] == '-'
|| attribute.substr(0,4) == "role"
|| attribute.substr(0,4) == "aria"
|| attribute.substr(0,5) == "xmlns"
|| attribute.substr(0,9) == "inkscape:"
|| attribute.substr(0,9) == "sodipodi:"
|| attribute.substr(0,4) == "rdf:"
|| attribute.substr(0,3) == "cc:"
|| attribute.substr(0,4) == "ns1:" // JessyInk
|| attribute.substr(0,4) == "osb:" // Open Swatch Book
|| (SPAttributeRelSVG::instance->attributesOfElements[temp].find(attribute)
!= SPAttributeRelSVG::instance->attributesOfElements[temp].end()) ) {
return true;
} else {
//g_warning( "Invalid attribute: %s used on <%s>", attribute.c_str(), element.c_str() );
return false;
}
}
/*
* One timer singleton constructor, to load the element -> attributes data
* into memory.
*/
SPAttributeRelSVG::SPAttributeRelSVG()
{
std::fstream f;
// Read data from standard path
std::string filepath = INKSCAPE_ATTRRELDIR;
filepath += "/svgprops";
f.open(filepath.c_str(), std::ios::in);
if (!f.is_open()) {
// Display warning for file not open
g_warning("Could not open the data file for XML attribute-element map construction: %s", filepath.c_str());
f.close();
return ;
}
foundFile = true;
while (!f.eof()){
std::stringstream ss;
std::string s;
std::getline(f,s,'"');
std::getline(f,s,'"');
if(s.size() > 0 && s[0] != '\n'){
std::string prop = s;
getline(f,s);
ss << s;
while(std::getline(ss,s,'"')){
std::string element;
std::getline(ss,s,'"');
element = s;
attributesOfElements[element].insert(prop);
}
}
}
f.close();
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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