#include "xml/repr.h"

#include "rdf.h"

#include "sp-item-group.h"

#include "inkscape.h"

#include "sp-root.h"

#include "preferences.h"

struct rdf_double_t rdf_license_empty [] = {

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a_sa [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ "cc:requires", "http://creativecommons.org/ns#ShareAlike", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a_nd [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a_nc [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ "cc:prohibits", "http://creativecommons.org/ns#CommercialUse", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a_nc_sa [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ "cc:prohibits", "http://creativecommons.org/ns#CommercialUse", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ "cc:requires", "http://creativecommons.org/ns#ShareAlike", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_cc_a_nc_nd [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ "cc:prohibits", "http://creativecommons.org/ns#CommercialUse", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_pd [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_freeart [] = {

{ "cc:permits", "http://creativecommons.org/ns#Reproduction", },

{ "cc:permits", "http://creativecommons.org/ns#Distribution", },

{ "cc:permits", "http://creativecommons.org/ns#DerivativeWorks", },

{ "cc:requires", "http://creativecommons.org/ns#ShareAlike", },

{ "cc:requires", "http://creativecommons.org/ns#Notice", },

{ "cc:requires", "http://creativecommons.org/ns#Attribution", },

{ NULL, NULL }

};

struct rdf_double_t rdf_license_ofl [] = {

{ "cc:permits", "http://scripts.sil.org/pub/OFL/Reproduction", },

{ "cc:permits", "http://scripts.sil.org/pub/OFL/Distribution", },

{ "cc:permits", "http://scripts.sil.org/pub/OFL/Embedding", },

{ "cc:permits", "http://scripts.sil.org/pub/OFL/DerivativeWorks", },

{ "cc:requires", "http://scripts.sil.org/pub/OFL/Notice", },

{ "cc:requires", "http://scripts.sil.org/pub/OFL/Attribution", },

{ "cc:requires", "http://scripts.sil.org/pub/OFL/ShareAlike", },

{ "cc:requires", "http://scripts.sil.org/pub/OFL/DerivativeRenaming", },

{ "cc:requires", "http://scripts.sil.org/pub/OFL/BundlingWhenSelling", },

{ NULL, NULL }

};

struct rdf_license_t rdf_licenses [] = {

{ N_("CC Attribution"),

"http://creativecommons.org/licenses/by/4.0/",

rdf_license_cc_a,

},

{ N_("CC Attribution-ShareAlike"),

"http://creativecommons.org/licenses/by-sa/4.0/",

rdf_license_cc_a_sa,

},

{ N_("CC Attribution-NoDerivs"),

"http://creativecommons.org/licenses/by-nd/4.0/",

rdf_license_cc_a_nd,

},

{ N_("CC Attribution-NonCommercial"),

"http://creativecommons.org/licenses/by-nc/4.0/",

rdf_license_cc_a_nc,

},

{ N_("CC Attribution-NonCommercial-ShareAlike"),

"http://creativecommons.org/licenses/by-nc-sa/4.0/",

rdf_license_cc_a_nc_sa,

},

{ N_("CC Attribution-NonCommercial-NoDerivs"),

"http://creativecommons.org/licenses/by-nc-nd/4.0/",

rdf_license_cc_a_nc_nd,

},

{ N_("CC0 Public Domain Dedication"),

"http://creativecommons.org/publicdomain/zero/1.0/",

rdf_license_pd,

},

{ N_("FreeArt"),

"http://artlibre.org/licence/lal",

rdf_license_freeart,

},

{ N_("Open Font License"),

"http://scripts.sil.org/OFL",

rdf_license_ofl,

},

{ NULL, NULL, rdf_license_empty, }

};

#define XML_TAG_NAME_SVG "svg:svg"

#define XML_TAG_NAME_METADATA "svg:metadata"

#define XML_TAG_NAME_RDF "rdf:RDF"

#define XML_TAG_NAME_WORK "cc:Work"

#define XML_TAG_NAME_LICENSE "cc:License"

#define XML_TAG_NAME_LICENSE_PROP "cc:license"

struct rdf_work_entity_t rdf_work_entities [] = {

{ "title", N_("Title:"), "dc:title", RDF_CONTENT,

N_("A name given to the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "date", N_("Date:"), "dc:date", RDF_CONTENT,

N_("A point or period of time associated with an event in the lifecycle of the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "format", N_("Format:"), "dc:format", RDF_CONTENT,

N_("The file format, physical medium, or dimensions of the resource"), RDF_FORMAT_LINE, RDF_EDIT_HARDCODED,

},

{ "type", N_("Type:"), "dc:type", RDF_RESOURCE,

N_("The nature or genre of the resource"), RDF_FORMAT_LINE, RDF_EDIT_HARDCODED,

},

{ "creator", N_("Creator:"), "dc:creator", RDF_AGENT,

N_("An entity primarily responsible for making the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "rights", N_("Rights:"), "dc:rights", RDF_AGENT,

N_("Information about rights held in and over the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "publisher", N_("Publisher:"), "dc:publisher", RDF_AGENT,

N_("An entity responsible for making the resource available"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "identifier", N_("Identifier:"), "dc:identifier", RDF_CONTENT,

N_("An unambiguous reference to the resource within a given context"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "source", N_("Source:"), "dc:source", RDF_CONTENT,

N_("A related resource from which the described resource is derived"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "relation", N_("Relation:"), "dc:relation", RDF_CONTENT,

N_("A related resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "language", N_("Language:"), "dc:language", RDF_CONTENT,

N_("A language of the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "subject", N_("Keywords:"), "dc:subject", RDF_BAG,

N_("The topic of the resource"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

// TRANSLATORS: "Coverage": the spatial or temporal characteristics of the content.

// For info, see Appendix D of http://www.w3.org/TR/1998/WD-rdf-schema-19980409/

{ "coverage", N_("Coverage:"), "dc:coverage", RDF_CONTENT,

N_("The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant"), RDF_FORMAT_LINE, RDF_EDIT_GENERIC,

},

{ "description", N_("Description:"), "dc:description", RDF_CONTENT,

N_("An account of the resource"), RDF_FORMAT_MULTILINE, RDF_EDIT_GENERIC,

},

// FIXME: need to handle 1 agent per line of input

{ "contributor", N_("Contributors:"), "dc:contributor", RDF_AGENT,

N_("An entity responsible for making contributions to the resource"), RDF_FORMAT_MULTILINE, RDF_EDIT_GENERIC,

},

// TRANSLATORS: URL to a page that defines the license for the document

{ "license_uri", N_("URI:"), "cc:license", RDF_RESOURCE,

// TRANSLATORS: this is where you put a URL to a page that defines the license

N_("URI to this document's license's namespace definition"), RDF_FORMAT_LINE, RDF_EDIT_SPECIAL,

},

// TRANSLATORS: fragment of XML representing the license of the document

{ "license_fragment", N_("Fragment:"), "License", RDF_XML,

N_("XML fragment for the RDF 'License' section"), RDF_FORMAT_MULTILINE, RDF_EDIT_SPECIAL,

},

{ NULL, NULL, NULL, RDF_CONTENT,

NULL, RDF_FORMAT_LINE, RDF_EDIT_HARDCODED,

}

};

class RDFImpl

{

public:

/**

static void ensureParentIsMetadata( SPDocument *doc, Inkscape::XML::Node *node );

static Inkscape::XML::Node const *getRdfRootRepr( SPDocument const * doc );

static Inkscape::XML::Node *ensureRdfRootRepr( SPDocument * doc );

static Inkscape::XML::Node const *getXmlRepr( SPDocument const * doc, gchar const * name );

static Inkscape::XML::Node *getXmlRepr( SPDocument * doc, gchar const * name );

static Inkscape::XML::Node *ensureXmlRepr( SPDocument * doc, gchar const * name );

static Inkscape::XML::Node const *getWorkRepr( SPDocument const * doc, gchar const * name );

static Inkscape::XML::Node *ensureWorkRepr( SPDocument * doc, gchar const * name );

static const gchar *getWorkEntity(SPDocument const * doc, struct rdf_work_entity_t & entity);

static unsigned int setWorkEntity(SPDocument * doc, struct rdf_work_entity_t & entity, gchar const * text);

static void setDefaults( SPDocument * doc );

/**

static const gchar *getReprText( Inkscape::XML::Node const * repr, struct rdf_work_entity_t const & entity );

static unsigned int setReprText( Inkscape::XML::Node * repr,

struct rdf_work_entity_t const & entity,

gchar const * text );

static struct rdf_license_t *getLicense(SPDocument *document);

static void setLicense(SPDocument * doc, struct rdf_license_t const * license);

};

struct rdf_work_entity_t *rdf_find_entity(gchar const * name)

{

struct rdf_work_entity_t *entity;

for (entity=rdf_work_entities; entity->name; entity++) {

if (strcmp(entity->name,name)==0) break;

}

if (entity->name) return entity;

return NULL;

}

const gchar *RDFImpl::getReprText( Inkscape::XML::Node const * repr, struct rdf_work_entity_t const & entity )

{

g_return_val_if_fail (repr != NULL, NULL);

static gchar * bag = NULL;

gchar * holder = NULL;

Inkscape::XML::Node const * temp = NULL;

switch (entity.datatype) {

case RDF_CONTENT:

temp = repr->firstChild();

if ( temp == NULL ) return NULL;

return temp->content();

case RDF_AGENT:

temp = sp_repr_lookup_name ( repr, "cc:Agent", 1 );

if ( temp == NULL ) return NULL;

temp = sp_repr_lookup_name ( temp, "dc:title", 1 );

if ( temp == NULL ) return NULL;

temp = temp->firstChild();

if ( temp == NULL ) return NULL;

return temp->content();

case RDF_RESOURCE:

return repr->attribute("rdf:resource");

case RDF_XML:

return "xml goes here";

case RDF_BAG:

/* clear the static string. yucky. */

if (bag) g_free(bag);

bag = NULL;

temp = sp_repr_lookup_name ( repr, "rdf:Bag", 1 );

if ( temp == NULL ) {

/* backwards compatible: read contents */

temp = repr->firstChild();

if ( temp == NULL ) return NULL;

return temp->content();

}

for ( temp = temp->firstChild() ;

temp ;

temp = temp->next() ) {

if (!strcmp(temp->name(),"rdf:li") &&

temp->firstChild()) {

const gchar * str = temp->firstChild()->content();

if (bag) {

holder = bag;

bag = g_strconcat(holder, ", ", str, NULL);

g_free(holder);

}

else {

bag = g_strdup(str);

}

}

}

return bag;

default:

break;

}

return NULL;

}

unsigned int RDFImpl::setReprText( Inkscape::XML::Node * repr,

struct rdf_work_entity_t const & entity,

gchar const * text )

{

g_return_val_if_fail ( repr != NULL, 0);

g_return_val_if_fail ( text != NULL, 0);

gchar * str = NULL;

gchar** strlist = NULL;

int i;

Inkscape::XML::Node * temp=NULL;

Inkscape::XML::Node * parent=repr;

Inkscape::XML::Document * xmldoc = parent->document();

g_return_val_if_fail (xmldoc != NULL, FALSE);

// set document's title element to the RDF title

if (!strcmp(entity.name, "title")) {

SPDocument *doc = SP_ACTIVE_DOCUMENT;

if (doc && doc->getRoot()) {

doc->getRoot()->setTitle(text);

}

}

switch (entity.datatype) {

case RDF_CONTENT:

temp = parent->firstChild();

if ( temp == NULL ) {

temp = xmldoc->createTextNode( text );

g_return_val_if_fail (temp != NULL, FALSE);

parent->appendChild(temp);

Inkscape::GC::release(temp);

return TRUE;

}

else {

temp->setContent(text);

return TRUE;

}

case RDF_AGENT:

temp = sp_repr_lookup_name ( parent, "cc:Agent", 1 );

if ( temp == NULL ) {

temp = xmldoc->createElement ( "cc:Agent" );

g_return_val_if_fail (temp != NULL, FALSE);

parent->appendChild(temp);

Inkscape::GC::release(temp);

}

parent = temp;

temp = sp_repr_lookup_name ( parent, "dc:title", 1 );

if ( temp == NULL ) {

temp = xmldoc->createElement ( "dc:title" );

g_return_val_if_fail (temp != NULL, FALSE);

parent->appendChild(temp);

Inkscape::GC::release(temp);

}

parent = temp;

temp = parent->firstChild();

if ( temp == NULL ) {

temp = xmldoc->createTextNode( text );

g_return_val_if_fail (temp != NULL, FALSE);

parent->appendChild(temp);

Inkscape::GC::release(temp);

return TRUE;

}

else {

temp->setContent(text);

return TRUE;

}

case RDF_RESOURCE:

parent->setAttribute("rdf:resource", text );

return true;

case RDF_XML:

return 1;

case RDF_BAG:

/* find/create the rdf:Bag item */

temp = sp_repr_lookup_name ( parent, "rdf:Bag", 1 );

if ( temp == NULL ) {

/* backward compatibility: drop the dc:subject contents */

while ( (temp = parent->firstChild()) ) {

parent->removeChild(temp);

}

temp = xmldoc->createElement ( "rdf:Bag" );

g_return_val_if_fail (temp != NULL, FALSE);

parent->appendChild(temp);

Inkscape::GC::release(temp);

}

parent = temp;

/* toss all the old list items */

while ( (temp = parent->firstChild()) ) {

parent->removeChild(temp);

}

/* chop our list up on commas */

strlist = g_strsplit( text, ",", 0);

for (i = 0; (str = strlist[i]); i++) {

temp = xmldoc->createElement ( "rdf:li" );

g_return_val_if_fail (temp != NULL, 0);

parent->appendChild(temp);

Inkscape::GC::release(temp);

Inkscape::XML::Node * child = xmldoc->createTextNode( g_strstrip(str) );

g_return_val_if_fail (child != NULL, 0);

temp->appendChild(child);

Inkscape::GC::release(child);

}

g_strfreev( strlist );

return 1;

default:

break;

}

return 0;

}

void RDFImpl::ensureParentIsMetadata( SPDocument *doc, Inkscape::XML::Node *node )

{

if ( !node ) {

g_critical("Null node passed to ensureParentIsMetadata().");

} else if ( !node->parent() ) {

g_critical( "No parent node when verifying <metadata> placement." );

} else {

Inkscape::XML::Node * currentParent = node->parent();

if ( strcmp( currentParent->name(), XML_TAG_NAME_METADATA ) != 0 ) {

Inkscape::XML::Node * metadata = doc->getReprDoc()->createElement( XML_TAG_NAME_METADATA );

if ( !metadata ) {

g_critical("Unable to create metadata element.");

} else {

// attach the metadata node

currentParent->appendChild( metadata );

Inkscape::GC::release( metadata );

// move the node into it

Inkscape::GC::anchor( node );

sp_repr_unparent( node );

metadata->appendChild( node );

Inkscape::GC::release( node );

}

}

}

}

Inkscape::XML::Node const *RDFImpl::getRdfRootRepr( SPDocument const * doc )

{

Inkscape::XML::Node const *rdf = 0;

if ( !doc ) {

g_critical("Null doc passed to getRdfRootRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else {

rdf = sp_repr_lookup_name( doc->getReprDoc(), XML_TAG_NAME_RDF );

}

return rdf;

}

Inkscape::XML::Node *RDFImpl::ensureRdfRootRepr( SPDocument * doc )

{

Inkscape::XML::Node *rdf = 0;

if ( !doc ) {

g_critical("Null doc passed to ensureRdfRootRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else {

rdf = sp_repr_lookup_name( doc->getReprDoc(), XML_TAG_NAME_RDF );

if ( !rdf ) {

Inkscape::XML::Node * svg = sp_repr_lookup_name( doc->getReprRoot(), XML_TAG_NAME_SVG );

if ( !svg ) {

g_critical("Unable to locate svg element.");

} else {

Inkscape::XML::Node * parent = sp_repr_lookup_name( svg, XML_TAG_NAME_METADATA );

if ( parent == NULL ) {

parent = doc->getReprDoc()->createElement( XML_TAG_NAME_METADATA );

if ( !parent ) {

g_critical("Unable to create metadata element");

} else {

svg->appendChild(parent);

Inkscape::GC::release(parent);

}

}

if ( parent && !parent->document() ) {

g_critical("Parent has no document");

} else if ( parent ) {

rdf = parent->document()->createElement( XML_TAG_NAME_RDF );

if ( !rdf ) {

g_critical("Unable to create root RDF element.");

} else {

parent->appendChild(rdf);

Inkscape::GC::release(rdf);

}

}

}

}

}

if ( rdf ) {

ensureParentIsMetadata( doc, rdf );

}

return rdf;

}

Inkscape::XML::Node const *RDFImpl::getXmlRepr( SPDocument const * doc, gchar const * name )

{

Inkscape::XML::Node const * xml = 0;

if ( !doc ) {

g_critical("Null doc passed to getXmlRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else if (!name) {

g_critical("Null name passed to getXmlRepr()");

} else {

Inkscape::XML::Node const * rdf = getRdfRootRepr( doc );

if ( rdf ) {

xml = sp_repr_lookup_name( rdf, name );

}

}

return xml;

}

Inkscape::XML::Node *RDFImpl::getXmlRepr( SPDocument * doc, gchar const * name )

{

Inkscape::XML::Node const *xml = getXmlRepr( const_cast<SPDocument const *>(doc), name );

return const_cast<Inkscape::XML::Node *>(xml);

}

Inkscape::XML::Node *RDFImpl::ensureXmlRepr( SPDocument * doc, gchar const * name )

{

Inkscape::XML::Node * xml = 0;

if ( !doc ) {

g_critical("Null doc passed to ensureXmlRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else if (!name) {

g_critical("Null name passed to ensureXmlRepr()");

} else {

Inkscape::XML::Node * rdf = ensureRdfRootRepr( doc );

if ( rdf ) {

xml = sp_repr_lookup_name( rdf, name );

if ( !xml ) {

xml = doc->getReprDoc()->createElement( name );

if ( !xml ) {

g_critical("Unable to create xml element <%s>.", name);

} else {

xml->setAttribute("rdf:about", "" );

rdf->appendChild(xml);

Inkscape::GC::release(xml);

}

}

}

}

return xml;

}

Inkscape::XML::Node const *RDFImpl::getWorkRepr( SPDocument const * doc, gchar const * name )

{

Inkscape::XML::Node const * item = 0;

if ( !doc ) {

g_critical("Null doc passed to getWorkRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else if (!name) {

g_critical("Null name passed to getWorkRepr()");

} else {

Inkscape::XML::Node const* work = getXmlRepr( doc, XML_TAG_NAME_WORK );

if ( work ) {

item = sp_repr_lookup_name( work, name, 1 );

}

}

return item;

}

Inkscape::XML::Node *RDFImpl::ensureWorkRepr( SPDocument * doc, gchar const * name )

{

Inkscape::XML::Node * item = 0;

if ( !doc ) {

g_critical("Null doc passed to ensureWorkRepr()");

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else if (!name) {

g_critical("Null name passed to ensureWorkRepr()");

} else {

Inkscape::XML::Node * work = ensureXmlRepr( doc, XML_TAG_NAME_WORK );

if ( work ) {

item = sp_repr_lookup_name( work, name, 1 );

if ( !item ) {

//printf("missing XML '%s'\n",name);

item = doc->getReprDoc()->createElement( name );

if ( !item ) {

g_critical("Unable to create xml element <%s>", name);

} else {

work->appendChild(item);

Inkscape::GC::release(item);

}

}

}

}

return item;

}

const gchar *rdf_get_work_entity(SPDocument const * doc, struct rdf_work_entity_t * entity)

{

const gchar *result = 0;

if ( !doc ) {

g_critical("Null doc passed to rdf_get_work_entity()");

} else if ( entity ) {

//g_message("want '%s'\n",entity->title);

result = RDFImpl::getWorkEntity( doc, *entity );

//g_message("found '%s' == '%s'\n", entity->title, result );

}

return result;

}

const gchar *RDFImpl::getWorkEntity(SPDocument const * doc, struct rdf_work_entity_t & entity)

{

gchar const *result = 0;

Inkscape::XML::Node const * item = getWorkRepr( doc, entity.tag );

if ( item ) {

result = getReprText( item, entity );

// TODO note that this is the location that used to set the title if needed. Ensure code it not required.

}

return result;

}

unsigned int rdf_set_work_entity(SPDocument * doc, struct rdf_work_entity_t * entity,

const gchar * text)

{

unsigned int result = 0;

if ( !doc ) {

g_critical("Null doc passed to rdf_set_work_entity()");

} else if ( entity ) {

result = RDFImpl::setWorkEntity( doc, *entity, text );

}

return result;

}

unsigned int RDFImpl::setWorkEntity(SPDocument * doc, struct rdf_work_entity_t & entity, const gchar * text)

{

int result = 0;

if ( !text ) {

// FIXME: on a "NULL" text, delete the entity. For now, blank it.

text = "";

}

/*

Inkscape::XML::Node * item = ensureWorkRepr( doc, entity.tag );

if ( !item ) {

g_critical("Unable to get work element");

} else {

result = setReprText( item, entity, text );

}

return result;

}

#undef DEBUG_MATCH

static bool

rdf_match_license(Inkscape::XML::Node const *repr, struct rdf_license_t const *license)

{

g_assert ( repr != NULL );

g_assert ( license != NULL );

bool result=TRUE;

#ifdef DEBUG_MATCH

printf("checking against '%s'\n",license->name);

#endif

int count = 0;

for (struct rdf_double_t const *details = license->details;

details->name; details++ ) {

count++;

}

bool * matched = (bool*)calloc(count,sizeof(bool));

for (Inkscape::XML::Node const *current = repr->firstChild();

current;

current = current->next() ) {

gchar const * attr = current->attribute("rdf:resource");

if ( attr == NULL ) continue;

#ifdef DEBUG_MATCH

printf("\texamining '%s' => '%s'\n", current->name(), attr);

#endif

bool found_match=FALSE;

for (int i=0; i<count; i++) {

// skip already matched items

if (matched[i]) continue;

#ifdef DEBUG_MATCH

printf("\t\t'%s' vs '%s'\n", current->name(), license->details[i].name);

printf("\t\t'%s' vs '%s'\n", attr, license->details[i].resource);

#endif

if (!strcmp( current->name(),

license->details[i].name ) &&

!strcmp( attr,

license->details[i].resource )) {

matched[i]=TRUE;

found_match=TRUE;

#ifdef DEBUG_MATCH

printf("\t\tgood!\n");

#endif

break;

}

}

if (!found_match) {

// if we checked each known item of the license

// and didn't find it, we must abort

result=FALSE;

#ifdef DEBUG_MATCH

printf("\t\tno '%s' element matched XML (bong)!\n",license->name);

#endif

break;

}

}

#ifdef DEBUG_MATCH

if (result) printf("\t\tall XML found matching elements!\n");

#endif

for (int i=0; result && i<count; i++) {

// scan looking for an unmatched item

if (matched[i]==0) {

result=FALSE;

#ifdef DEBUG_MATCH

printf("\t\tnot all '%s' elements used to match (bong)!\n", license->name);

#endif

}

}

#ifdef DEBUG_MATCH

printf("\t\tall '%s' elements used to match!\n",license->name);

#endif

free(matched);

#ifdef DEBUG_MATCH

if (result) printf("matched '%s'\n",license->name);

#endif

return result;

}

struct rdf_license_t *rdf_get_license(SPDocument *document)

{

return RDFImpl::getLicense(document);

}

struct rdf_license_t *RDFImpl::getLicense(SPDocument *document)

{

// Base license lookup on the URI of cc:license rather than the license

// properties, per instructions from the ccREL gurus.

// (Fixes https://bugs.launchpad.net/inkscape/+bug/372427)

struct rdf_work_entity_t *entity = rdf_find_entity("license_uri");

if (entity == NULL) {

g_critical("Can't find internal entity structure for 'license_uri'");

return NULL;

}

const gchar *uri = getWorkEntity(document, *entity);

struct rdf_license_t * license_by_uri = NULL;

if (uri != NULL) {

for (struct rdf_license_t * license = rdf_licenses; license->name; license++) {

if (g_strcmp0(uri, license->uri) == 0) {

license_by_uri = license;

break;

}

}

}

// To improve backward compatibility, the old license matching code is

// kept as fallback and to warn about and fix discrepancies.

// TODO: would it be better to do this code on document load? Is

// sp_metadata_build() then the right place to put the call to sort out

// any RDF mess?

struct rdf_license_t * license_by_properties = NULL;

Inkscape::XML::Node const *repr = getXmlRepr( document, XML_TAG_NAME_LICENSE );

if (repr) {

for ( struct rdf_license_t * license = rdf_licenses; license->name; license++ ) {

if ( rdf_match_license( repr, license ) ) {

license_by_properties = license;

break;

}

}

}

if (license_by_uri != NULL && license_by_properties != NULL) {

// Both property and structure, use property

if (license_by_uri != license_by_properties) {

// TODO: this should be a user-visible warning, but how?

g_warning("Mismatch between %s and %s metadata:\n"

"%s value URI: %s (using this one!)\n"

"%s derived URI: %s",

XML_TAG_NAME_LICENSE_PROP,

XML_TAG_NAME_LICENSE,

XML_TAG_NAME_LICENSE_PROP,

license_by_uri->uri,

XML_TAG_NAME_LICENSE,

license_by_properties->uri);

}

// Reset license structure to match so the document is consistent

// (and this will also silence the warning above on repeated calls).

setLicense(document, license_by_uri);

return license_by_uri;

}

else if (license_by_uri != NULL) {

// Only cc:license property, set structure for backward compatiblity

setLicense(document, license_by_uri);

return license_by_uri;

}

else if (license_by_properties != NULL) {

// Only cc:License structure

// TODO: this could be a user-visible warning too

g_warning("No %s metadata found, derived license URI from %s: %s",

XML_TAG_NAME_LICENSE_PROP, XML_TAG_NAME_LICENSE,

license_by_properties->uri);

// Set license property to match

setWorkEntity(document, *entity, license_by_properties->uri);

return license_by_properties;

}

// No license info at all

return NULL;

}

void rdf_set_license(SPDocument * doc, struct rdf_license_t const * license)

{

RDFImpl::setLicense( doc, license );

}

void RDFImpl::setLicense(SPDocument * doc, struct rdf_license_t const * license)

{

// When basing license check on only the license URI (see fix for

// https://bugs.launchpad.net/inkscape/+bug/372427 above) we should

// really drop this license section, but keep writing it for a while for

// compatibility with older versions.

// drop old license section

Inkscape::XML::Node * repr = getXmlRepr( doc, XML_TAG_NAME_LICENSE );

if (repr) {

sp_repr_unparent(repr);

}

if ( !license ) {

// All done

} else if ( !doc->getReprDoc() ) {

g_critical("XML doc is null.");

} else {

// build new license section

repr = ensureXmlRepr( doc, XML_TAG_NAME_LICENSE );

g_assert( repr );

repr->setAttribute("rdf:about", license->uri );

for (struct rdf_double_t const * detail = license->details; detail->name; detail++) {

Inkscape::XML::Node * child = doc->getReprDoc()->createElement( detail->name );

g_assert ( child != NULL );

child->setAttribute("rdf:resource", detail->resource );

repr->appendChild(child);

Inkscape::GC::release(child);

}

}

}

struct rdf_entity_default_t {

gchar const * name;

gchar const * text;

};

struct rdf_entity_default_t rdf_defaults[] = {

{ "format", "image/svg+xml", },

{ "type", "http://purl.org/dc/dcmitype/StillImage", },

{ NULL, NULL, }

};

void rdf_set_defaults( SPDocument * doc )

{

RDFImpl::setDefaults( doc );

}

void RDFImpl::setDefaults( SPDocument * doc )

{

g_assert( doc != NULL );

// Create metadata node if it doesn't already exist

if (!sp_item_group_get_child_by_name( doc->getRoot(), NULL,

XML_TAG_NAME_METADATA)) {

if ( !doc->getReprDoc()) {

g_critical("XML doc is null.");

} else {

// create repr

Inkscape::XML::Node * rnew = doc->getReprDoc()->createElement(XML_TAG_NAME_METADATA);

// insert into the document

doc->getReprRoot()->addChild(rnew, NULL);

// clean up

Inkscape::GC::release(rnew);

}

}

// install defaults

for ( struct rdf_entity_default_t * rdf_default = rdf_defaults; rdf_default->name; rdf_default++) {

struct rdf_work_entity_t * entity = rdf_find_entity( rdf_default->name );

g_assert( entity != NULL );

if ( getWorkEntity( doc, *entity ) == NULL ) {

setWorkEntity( doc, *entity, rdf_default->text );

}

}

}

void rdf_add_from_preferences(SPDocument *doc)

{

Inkscape::Preferences *prefs = Inkscape::Preferences::get();

if (!prefs->getBool("/metadata/addToNewFile")) {

return;

}

// If there is already some metadata in the doc (from a template) dont add default metadata

for (struct rdf_work_entity_t *entity = rdf_work_entities; entity && entity->name; entity++) {

if ( entity->editable == RDF_EDIT_GENERIC &&

rdf_get_work_entity (doc, entity)) {

return;

}

}

// Put the metadata from user preferences into the doc

for (struct rdf_work_entity_t *entity = rdf_work_entities; entity && entity->name; entity++) {

if ( entity->editable == RDF_EDIT_GENERIC ) {

Glib::ustring text = prefs->getString(PREFS_METADATA + Glib::ustring(entity->name));

if (text.length() > 0) {

rdf_set_work_entity (doc, entity, text.c_str());

}

}

}

}