G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (TrackerExtractInfo *info)
{
TrackerConfig *config;
GTime creation_date;
GError *error = NULL;
TrackerSparqlBuilder *metadata, *preupdate;
const gchar *graph;
const gchar *urn;
TrackerXmpData *xd = NULL;
PDFData pd = { 0 }; /* actual data */
PDFData md = { 0 }; /* for merging */
PopplerDocument *document;
gchar *xml = NULL;
gchar *content, *uri;
guint n_bytes;
GPtrArray *keywords;
guint i;
GFile *file;
gchar *filename;
int fd;
gchar *contents = NULL;
gsize len;
struct stat st;
metadata = tracker_extract_info_get_metadata_builder (info);
preupdate = tracker_extract_info_get_preupdate_builder (info);
graph = tracker_extract_info_get_graph (info);
urn = tracker_extract_info_get_urn (info);
file = tracker_extract_info_get_file (info);
filename = g_file_get_path (file);
fd = tracker_file_open_fd (filename);
if (fd == -1) {
g_warning ("Could not open pdf file '%s': %s\n",
filename,
g_strerror (errno));
g_free (filename);
return FALSE;
}
if (fstat (fd, &st) == -1) {
g_warning ("Could not fstat pdf file '%s': %s\n",
filename,
g_strerror (errno));
close (fd);
g_free (filename);
return FALSE;
}
if (st.st_size == 0) {
contents = NULL;
len = 0;
} else {
contents = (gchar *) mmap (NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (contents == NULL || contents == MAP_FAILED) {
g_warning ("Could not mmap pdf file '%s': %s\n",
filename,
g_strerror (errno));
close (fd);
g_free (filename);
return FALSE;
}
len = st.st_size;
}
g_free (filename);
uri = g_file_get_uri (file);
document = poppler_document_new_from_data (contents, len, NULL, &error);
if (error) {
if (error->code == POPPLER_ERROR_ENCRYPTED) {
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nfo:PaginatedTextDocument");
tracker_sparql_builder_predicate (metadata, "nfo:isContentEncrypted");
tracker_sparql_builder_object_boolean (metadata, TRUE);
g_error_free (error);
g_free (uri);
close (fd);
return TRUE;
} else {
g_warning ("Couldn't create PopplerDocument from uri:'%s', %s",
uri,
error->message ? error->message : "no error given");
g_error_free (error);
g_free (uri);
close (fd);
return FALSE;
}
}
if (!document) {
g_warning ("Could not create PopplerDocument from uri:'%s', "
"NULL returned without an error",
uri);
g_free (uri);
close (fd);
return FALSE;
}
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nfo:PaginatedTextDocument");
g_object_get (document,
"title", &pd.title,
"author", &pd.author,
"subject", &pd.subject,
"keywords", &pd.keywords,
"creation-date", &creation_date,
"metadata", &xml,
NULL);
if (creation_date > 0) {
pd.creation_date = tracker_date_to_string ((time_t) creation_date);
}
keywords = g_ptr_array_new_with_free_func ((GDestroyNotify) g_free);
if (xml && *xml &&
(xd = tracker_xmp_new (xml, strlen (xml), uri)) != NULL) {
/* The casts here are well understood and known */
md.title = (gchar *) tracker_coalesce_strip (4, pd.title, xd->title, xd->title2, xd->pdf_title);
md.subject = (gchar *) tracker_coalesce_strip (2, pd.subject, xd->subject);
md.date = (gchar *) tracker_coalesce_strip (3, pd.creation_date, xd->date, xd->time_original);
md.author = (gchar *) tracker_coalesce_strip (2, pd.author, xd->creator);
write_pdf_data (md, metadata, keywords);
if (xd->keywords) {
tracker_keywords_parse (keywords, xd->keywords);
}
if (xd->pdf_keywords) {
tracker_keywords_parse (keywords, xd->pdf_keywords);
}
if (xd->publisher) {
tracker_sparql_builder_predicate (metadata, "nco:publisher");
tracker_sparql_builder_object_blank_open (metadata);
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nco:Contact");
tracker_sparql_builder_predicate (metadata, "nco:fullname");
tracker_sparql_builder_object_unvalidated (metadata, xd->publisher);
tracker_sparql_builder_object_blank_close (metadata);
}
if (xd->type) {
tracker_sparql_builder_predicate (metadata, "dc:type");
tracker_sparql_builder_object_unvalidated (metadata, xd->type);
}
if (xd->format) {
tracker_sparql_builder_predicate (metadata, "dc:format");
tracker_sparql_builder_object_unvalidated (metadata, xd->format);
}
if (xd->identifier) {
tracker_sparql_builder_predicate (metadata, "dc:identifier");
tracker_sparql_builder_object_unvalidated (metadata, xd->identifier);
}
if (xd->source) {
tracker_sparql_builder_predicate (metadata, "dc:source");
tracker_sparql_builder_object_unvalidated (metadata, xd->source);
}
if (xd->language) {
tracker_sparql_builder_predicate (metadata, "dc:language");
tracker_sparql_builder_object_unvalidated (metadata, xd->language);
}
if (xd->relation) {
tracker_sparql_builder_predicate (metadata, "dc:relation");
tracker_sparql_builder_object_unvalidated (metadata, xd->relation);
}
if (xd->coverage) {
tracker_sparql_builder_predicate (metadata, "dc:coverage");
tracker_sparql_builder_object_unvalidated (metadata, xd->coverage);
}
if (xd->license) {
tracker_sparql_builder_predicate (metadata, "nie:license");
tracker_sparql_builder_object_unvalidated (metadata, xd->license);
}
if (xd->make || xd->model) {
gchar *equip_uri;
equip_uri = tracker_sparql_escape_uri_printf ("urn:equipment:%s:%s:",
xd->make ? xd->make : "",
xd->model ? xd->model : "");
tracker_sparql_builder_insert_open (preupdate, NULL);
if (graph) {
tracker_sparql_builder_graph_open (preupdate, graph);
}
tracker_sparql_builder_subject_iri (preupdate, equip_uri);
tracker_sparql_builder_predicate (preupdate, "a");
tracker_sparql_builder_object (preupdate, "nfo:Equipment");
if (xd->make) {
tracker_sparql_builder_predicate (preupdate, "nfo:manufacturer");
tracker_sparql_builder_object_unvalidated (preupdate, xd->make);
}
if (xd->model) {
tracker_sparql_builder_predicate (preupdate, "nfo:model");
tracker_sparql_builder_object_unvalidated (preupdate, xd->model);
}
if (graph) {
tracker_sparql_builder_graph_close (preupdate);
}
tracker_sparql_builder_insert_close (preupdate);
tracker_sparql_builder_predicate (metadata, "nfo:equipment");
tracker_sparql_builder_object_iri (metadata, equip_uri);
g_free (equip_uri);
}
if (xd->orientation) {
tracker_sparql_builder_predicate (metadata, "nfo:orientation");
tracker_sparql_builder_object (metadata, xd->orientation);
}
if (xd->rights) {
tracker_sparql_builder_predicate (metadata, "nie:copyright");
tracker_sparql_builder_object_unvalidated (metadata, xd->rights);
}
if (xd->white_balance) {
tracker_sparql_builder_predicate (metadata, "nmm:whiteBalance");
tracker_sparql_builder_object (metadata, xd->white_balance);
}
if (xd->fnumber) {
gdouble value;
value = g_strtod (xd->fnumber, NULL);
tracker_sparql_builder_predicate (metadata, "nmm:fnumber");
tracker_sparql_builder_object_double (metadata, value);
}
if (xd->flash) {
tracker_sparql_builder_predicate (metadata, "nmm:flash");
tracker_sparql_builder_object (metadata, xd->flash);
}
if (xd->focal_length) {
gdouble value;
value = g_strtod (xd->focal_length, NULL);
tracker_sparql_builder_predicate (metadata, "nmm:focalLength");
tracker_sparql_builder_object_double (metadata, value);
}
/* Question: Shouldn't xd->Artist be merged with md.author instead? */
if (xd->artist || xd->contributor) {
const gchar *artist;
artist = tracker_coalesce_strip (2, xd->artist, xd->contributor);
tracker_sparql_builder_predicate (metadata, "nco:contributor");
tracker_sparql_builder_object_blank_open (metadata);
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nco:Contact");
tracker_sparql_builder_predicate (metadata, "nco:fullname");
tracker_sparql_builder_object_unvalidated (metadata, artist);
tracker_sparql_builder_object_blank_close (metadata);
}
if (xd->exposure_time) {
gdouble value;
value = g_strtod (xd->exposure_time, NULL);
tracker_sparql_builder_predicate (metadata, "nmm:exposureTime");
tracker_sparql_builder_object_double (metadata, value);
}
if (xd->iso_speed_ratings) {
gdouble value;
value = g_strtod (xd->iso_speed_ratings, NULL);
tracker_sparql_builder_predicate (metadata, "nmm:isoSpeed");
tracker_sparql_builder_object_double (metadata, value);
}
if (xd->description) {
tracker_sparql_builder_predicate (metadata, "nie:description");
tracker_sparql_builder_object_unvalidated (metadata, xd->description);
}
if (xd->metering_mode) {
tracker_sparql_builder_predicate (metadata, "nmm:meteringMode");
tracker_sparql_builder_object (metadata, xd->metering_mode);
}
if (xd->address || xd->state || xd->country || xd->city ||
xd->gps_altitude || xd->gps_latitude || xd-> gps_longitude) {
tracker_sparql_builder_predicate (metadata, "slo:location");
tracker_sparql_builder_object_blank_open (metadata); /* GeoLocation */
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "slo:GeoLocation");
if (xd->address || xd->state || xd->country || xd->city) {
gchar *addruri;
addruri = tracker_sparql_get_uuid_urn ();
tracker_sparql_builder_predicate (metadata, "slo:postalAddress");
tracker_sparql_builder_object_iri (metadata, addruri);
tracker_sparql_builder_insert_open (preupdate, NULL);
if (graph) {
tracker_sparql_builder_graph_open (preupdate, graph);
}
tracker_sparql_builder_subject_iri (preupdate, addruri);
g_free (addruri);
tracker_sparql_builder_predicate (preupdate, "a");
tracker_sparql_builder_object (preupdate, "nco:PostalAddress");
if (xd->address) {
tracker_sparql_builder_predicate (preupdate, "nco:streetAddress");
tracker_sparql_builder_object_unvalidated (preupdate, xd->address);
}
if (xd->state) {
tracker_sparql_builder_predicate (preupdate, "nco:region");
tracker_sparql_builder_object_unvalidated (preupdate, xd->state);
}
if (xd->city) {
tracker_sparql_builder_predicate (preupdate, "nco:locality");
tracker_sparql_builder_object_unvalidated (preupdate, xd->city);
}
if (xd->country) {
tracker_sparql_builder_predicate (preupdate, "nco:country");
tracker_sparql_builder_object_unvalidated (preupdate, xd->country);
}
if (graph) {
tracker_sparql_builder_graph_close (preupdate);
}
tracker_sparql_builder_insert_close (preupdate);
}
if (xd->gps_altitude) {
tracker_sparql_builder_predicate (metadata, "slo:altitude");
tracker_sparql_builder_object_unvalidated (metadata, xd->gps_altitude);
}
if (xd->gps_latitude) {
tracker_sparql_builder_predicate (metadata, "slo:latitude");
tracker_sparql_builder_object_unvalidated (metadata, xd->gps_latitude);
}
if (xd->gps_longitude) {
tracker_sparql_builder_predicate (metadata, "slo:longitude");
tracker_sparql_builder_object_unvalidated (metadata, xd->gps_longitude);
}
tracker_sparql_builder_object_blank_close (metadata); /* GeoLocation */
}
if (xd->regions) {
tracker_xmp_apply_regions (preupdate, metadata, graph, xd);
}
tracker_xmp_free (xd);
} else {
/* So if we are here we have NO XMP data and we just
* write what we know from Poppler.
*/
write_pdf_data (pd, metadata, keywords);
}
for (i = 0; i < keywords->len; i++) {
gchar *escaped, *subject;
const gchar *p;
p = g_ptr_array_index (keywords, i);
escaped = tracker_sparql_escape_string (p);
subject = g_strdup_printf ("_:tag%d", i + 1);
/* ensure tag with specified label exists */
tracker_sparql_builder_insert_open (preupdate, graph);
tracker_sparql_builder_subject (preupdate, subject);
tracker_sparql_builder_predicate (preupdate, "a");
tracker_sparql_builder_object (preupdate, "nao:Tag");
tracker_sparql_builder_predicate (preupdate, "nao:prefLabel");
tracker_sparql_builder_object_unvalidated (preupdate, escaped);
tracker_sparql_builder_insert_close (preupdate);
tracker_sparql_builder_append (preupdate,
"WHERE { FILTER (NOT EXISTS { "
"?tag a nao:Tag ; nao:prefLabel \"");
tracker_sparql_builder_append (preupdate, escaped);
tracker_sparql_builder_append (preupdate,
"\" }) }\n");
/* associate file with tag */
tracker_sparql_builder_insert_open (preupdate, graph);
tracker_sparql_builder_subject_iri (preupdate, urn);
tracker_sparql_builder_predicate (preupdate, "nao:hasTag");
tracker_sparql_builder_object (preupdate, "?tag");
tracker_sparql_builder_insert_close (preupdate);
tracker_sparql_builder_where_open (preupdate);
tracker_sparql_builder_subject (preupdate, "?tag");
tracker_sparql_builder_predicate (preupdate, "a");
tracker_sparql_builder_object (preupdate, "nao:Tag");
tracker_sparql_builder_predicate (preupdate, "nao:prefLabel");
tracker_sparql_builder_object_unvalidated (preupdate, escaped);
tracker_sparql_builder_where_close (preupdate);
g_free (subject);
g_free (escaped);
}
g_ptr_array_free (keywords, TRUE);
tracker_sparql_builder_predicate (metadata, "nfo:pageCount");
tracker_sparql_builder_object_int64 (metadata, poppler_document_get_n_pages (document));
config = tracker_main_get_config ();
n_bytes = tracker_config_get_max_bytes (config);
content = extract_content_text (document, n_bytes);
if (content) {
tracker_sparql_builder_predicate (metadata, "nie:plainTextContent");
tracker_sparql_builder_object_unvalidated (metadata, content);
g_free (content);
}
read_outline (document, metadata);
g_free (xml);
g_free (pd.keywords);
g_free (pd.title);
g_free (pd.subject);
g_free (pd.creation_date);
g_free (pd.author);
g_free (pd.date);
g_free (uri);
g_object_unref (document);
if (contents) {
munmap (contents, len);
}
close (fd);
return TRUE;
}
G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (TrackerExtractInfo *info)
{
TrackerConfig *config;
GTime creation_date;
GError *error = NULL;
TrackerResource *metadata;
TrackerXmpData *xd = NULL;
PDFData pd = { 0 }; /* actual data */
PDFData md = { 0 }; /* for merging */
PopplerDocument *document;
gchar *xml = NULL;
gchar *content, *uri;
guint n_bytes;
GPtrArray *keywords;
guint i;
GFile *file;
gchar *filename;
int fd;
gchar *contents = NULL;
gsize len;
struct stat st;
file = tracker_extract_info_get_file (info);
filename = g_file_get_path (file);
fd = tracker_file_open_fd (filename);
if (fd == -1) {
g_warning ("Could not open pdf file '%s': %s\n",
filename,
g_strerror (errno));
g_free (filename);
return FALSE;
}
if (fstat (fd, &st) == -1) {
g_warning ("Could not fstat pdf file '%s': %s\n",
filename,
g_strerror (errno));
close (fd);
g_free (filename);
return FALSE;
}
if (st.st_size == 0) {
contents = NULL;
len = 0;
} else {
contents = (gchar *) mmap (NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (contents == NULL || contents == MAP_FAILED) {
g_warning ("Could not mmap pdf file '%s': %s\n",
filename,
g_strerror (errno));
close (fd);
g_free (filename);
return FALSE;
}
len = st.st_size;
}
g_free (filename);
uri = g_file_get_uri (file);
document = poppler_document_new_from_data (contents, len, NULL, &error);
if (error) {
if (error->code == POPPLER_ERROR_ENCRYPTED) {
metadata = tracker_resource_new (NULL);
tracker_resource_add_uri (metadata, "rdf:type", "nfo:PaginatedTextDocument");
tracker_resource_set_boolean (metadata, "nfo:isContentEncrypted", TRUE);
tracker_extract_info_set_resource (info, metadata);
g_object_unref (metadata);
g_error_free (error);
g_free (uri);
close (fd);
return TRUE;
} else {
g_warning ("Couldn't create PopplerDocument from uri:'%s', %s",
uri,
error->message ? error->message : "no error given");
g_error_free (error);
g_free (uri);
close (fd);
return FALSE;
}
}
if (!document) {
g_warning ("Could not create PopplerDocument from uri:'%s', "
"NULL returned without an error",
uri);
g_free (uri);
close (fd);
return FALSE;
}
metadata = tracker_resource_new (NULL);
tracker_resource_add_uri (metadata, "rdf:type", "nfo:PaginatedTextDocument");
g_object_get (document,
"title", &pd.title,
"author", &pd.author,
"subject", &pd.subject,
"keywords", &pd.keywords,
"creation-date", &creation_date,
"metadata", &xml,
NULL);
if (creation_date > 0) {
pd.creation_date = tracker_date_to_string ((time_t) creation_date);
}
keywords = g_ptr_array_new_with_free_func ((GDestroyNotify) g_free);
if (xml && *xml &&
(xd = tracker_xmp_new (xml, strlen (xml), uri)) != NULL) {
/* The casts here are well understood and known */
md.title = (gchar *) tracker_coalesce_strip (4, pd.title, xd->title, xd->title2, xd->pdf_title);
md.subject = (gchar *) tracker_coalesce_strip (2, pd.subject, xd->subject);
md.date = (gchar *) tracker_coalesce_strip (3, pd.creation_date, xd->date, xd->time_original);
md.author = (gchar *) tracker_coalesce_strip (2, pd.author, xd->creator);
write_pdf_data (md, metadata, keywords);
if (xd->keywords) {
tracker_keywords_parse (keywords, xd->keywords);
}
if (xd->pdf_keywords) {
tracker_keywords_parse (keywords, xd->pdf_keywords);
}
if (xd->publisher) {
TrackerResource *publisher = tracker_extract_new_contact (xd->publisher);
tracker_resource_set_relation (metadata, "nco:publisher", publisher);
g_object_unref (publisher);
}
if (xd->type) {
tracker_resource_set_string (metadata, "dc:type", xd->type);
}
if (xd->format) {
tracker_resource_set_string (metadata, "dc:format", xd->format);
}
if (xd->identifier) {
tracker_resource_set_string (metadata, "dc:identifier", xd->identifier);
}
if (xd->source) {
tracker_resource_set_string (metadata, "dc:source", xd->source);
}
if (xd->language) {
tracker_resource_set_string (metadata, "dc:language", xd->language);
}
if (xd->relation) {
tracker_resource_set_string (metadata, "dc:relation", xd->relation);
}
if (xd->coverage) {
tracker_resource_set_string (metadata, "dc:coverage", xd->coverage);
}
if (xd->license) {
tracker_resource_set_string (metadata, "nie:license", xd->license);
}
if (xd->make || xd->model) {
TrackerResource *equipment = tracker_extract_new_equipment (xd->make, xd->model);
tracker_resource_set_relation (metadata, "nfo:equipment", equipment);
g_object_unref (equipment);
}
if (xd->orientation) {
tracker_resource_set_string (metadata, "nfo:orientation", xd->orientation);
}
if (xd->rights) {
tracker_resource_set_string (metadata, "nie:copyright", xd->rights);
}
if (xd->white_balance) {
tracker_resource_set_string (metadata, "nmm:whiteBalance", xd->white_balance);
}
if (xd->fnumber) {
gdouble value;
value = g_strtod (xd->fnumber, NULL);
tracker_resource_set_double (metadata, "nmm:fnumber", value);
}
if (xd->flash) {
tracker_resource_set_string (metadata, "nmm:flash", xd->flash);
}
if (xd->focal_length) {
gdouble value;
value = g_strtod (xd->focal_length, NULL);
tracker_resource_set_double (metadata, "nmm:focalLength", value);
}
/* Question: Shouldn't xd->Artist be merged with md.author instead? */
if (xd->artist || xd->contributor) {
TrackerResource *artist;
const gchar *artist_name;
artist_name = tracker_coalesce_strip (2, xd->artist, xd->contributor);
artist = tracker_extract_new_contact (artist_name);
tracker_resource_set_relation (metadata, "nco:contributor", artist);
g_object_unref (artist);
}
if (xd->exposure_time) {
gdouble value;
value = g_strtod (xd->exposure_time, NULL);
tracker_resource_set_double (metadata, "nmm:exposureTime", value);
}
if (xd->iso_speed_ratings) {
gdouble value;
value = g_strtod (xd->iso_speed_ratings, NULL);
tracker_resource_set_double (metadata, "nmm:isoSpeed", value);
}
if (xd->description) {
tracker_resource_set_string (metadata, "nie:description", xd->description);
}
if (xd->metering_mode) {
tracker_resource_set_string (metadata, "nmm:meteringMode", xd->metering_mode);
}
if (xd->address || xd->state || xd->country || xd->city ||
xd->gps_altitude || xd->gps_latitude || xd-> gps_longitude) {
TrackerResource *location = tracker_extract_new_location (xd->address,
xd->state, xd->city, xd->country, xd->gps_altitude,
xd->gps_latitude, xd->gps_longitude);
tracker_resource_set_relation (metadata, "slo:location", location);
g_object_unref (location);
}
if (xd->regions) {
tracker_xmp_apply_regions_to_resource (metadata, xd);
}
tracker_xmp_free (xd);
} else {
/* So if we are here we have NO XMP data and we just
* write what we know from Poppler.
*/
write_pdf_data (pd, metadata, keywords);
}
for (i = 0; i < keywords->len; i++) {
TrackerResource *tag;
const gchar *p;
p = g_ptr_array_index (keywords, i);
tag = tracker_extract_new_tag (p);
tracker_resource_add_relation (metadata, "nao:hasTag", tag);
g_object_unref (tag);
}
g_ptr_array_free (keywords, TRUE);
tracker_resource_set_int64 (metadata, "nfo:pageCount", poppler_document_get_n_pages(document));
config = tracker_main_get_config ();
n_bytes = tracker_config_get_max_bytes (config);
content = extract_content_text (document, n_bytes);
if (content) {
tracker_resource_set_string (metadata, "nie:plainTextContent", content);
g_free (content);
}
read_outline (document, metadata);
g_free (xml);
g_free (pd.keywords);
g_free (pd.title);
g_free (pd.subject);
g_free (pd.creation_date);
g_free (pd.author);
g_free (pd.date);
g_free (uri);
g_object_unref (document);
if (contents) {
munmap (contents, len);
}
close (fd);
tracker_extract_info_set_resource (info, metadata);
g_object_unref (metadata);
return TRUE;
}