X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=backend%2Fpdf%2Fev-poppler.cc;h=82cde9e311893145d439369c06eac7172aa9969b;hb=e63cb09538113fa2695bc2877902702109eed303;hp=6ba82a6dbbb61e40c2e471f5474f386b31d3094a;hpb=839ffed6b31077b8eec37858ee50cb438033f90d;p=evince.git diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc index 6ba82a6d..82cde9e3 100644 --- a/backend/pdf/ev-poppler.cc +++ b/backend/pdf/ev-poppler.cc @@ -1,5 +1,7 @@ /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ -/* pdfdocument.h: Implementation of EvDocument for PDF +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2009, Juanjo Marín * Copyright (C) 2004, Red Hat, Inc. * * This program is free software; you can redistribute it and/or modify @@ -48,6 +50,7 @@ #include "ev-document-layers.h" #include "ev-document-print.h" #include "ev-document-annotations.h" +#include "ev-document-attachments.h" #include "ev-selection.h" #include "ev-transition-effect.h" #include "ev-attachment.h" @@ -62,6 +65,13 @@ #define HAVE_CAIRO_PRINT #endif +/* fields from the XMP Rights Management Schema, XMP Specification Sept 2005, pag. 45 */ +#define LICENSE_MARKED "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:Marked" +#define LICENSE_TEXT "/x:xmpmeta/rdf:RDF/rdf:Description/dc:rights/rdf:Alt/rdf:li[lang('%s')]" +#define LICENSE_WEB_STATEMENT "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:WebStatement" +/* license field from Creative Commons schema, http://creativecommons.org/ns */ +#define LICENSE_URI "/x:xmpmeta/rdf:RDF/rdf:Description/cc:license/@rdf:resource" + typedef struct { PdfDocument *document; char *text; @@ -91,12 +101,12 @@ typedef struct { struct _PdfDocumentClass { - GObjectClass parent_class; + EvDocumentClass parent_class; }; struct _PdfDocument { - GObject parent_instance; + EvDocument parent_instance; PopplerDocument *document; gchar *password; @@ -112,7 +122,6 @@ struct _PdfDocument GList *layers; }; -static void pdf_document_document_iface_init (EvDocumentIface *iface); static void pdf_document_security_iface_init (EvDocumentSecurityIface *iface); static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); static void pdf_document_document_links_iface_init (EvDocumentLinksIface *iface); @@ -124,6 +133,7 @@ static void pdf_document_document_layers_iface_init (EvDocumentLayersIface static void pdf_document_document_print_iface_init (EvDocumentPrintIface *iface); #endif static void pdf_document_document_annotations_iface_init (EvDocumentAnnotationsIface *iface); +static void pdf_document_document_attachments_iface_init (EvDocumentAttachmentsIface *iface); static void pdf_document_find_iface_init (EvDocumentFindIface *iface); static void pdf_document_file_exporter_iface_init (EvFileExporterIface *iface); static void pdf_selection_iface_init (EvSelectionIface *iface); @@ -134,12 +144,16 @@ static void pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails gint *height); static int pdf_document_get_n_pages (EvDocument *document); -static EvLinkDest *ev_link_dest_from_dest (PdfDocument *pdf_document, - PopplerDest *dest); -static EvLink *ev_link_from_action (PdfDocument *pdf_document, - PopplerAction *action); -static void pdf_document_search_free (PdfDocumentSearch *search); -static void pdf_print_context_free (PdfPrintContext *ctx); +static EvLinkDest *ev_link_dest_from_dest (PdfDocument *pdf_document, + PopplerDest *dest); +static EvLink *ev_link_from_action (PdfDocument *pdf_document, + PopplerAction *action); +static void pdf_document_search_free (PdfDocumentSearch *search); +static void pdf_print_context_free (PdfPrintContext *ctx); +static gboolean attachment_save_to_buffer (PopplerAttachment *attachment, + gchar **buffer, + gsize *buffer_size, + GError **error); EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document, { @@ -163,6 +177,8 @@ EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document, #endif EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ANNOTATIONS, pdf_document_document_annotations_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ATTACHMENTS, + pdf_document_document_attachments_iface_init); EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, pdf_document_find_iface_init); EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, @@ -229,14 +245,6 @@ pdf_document_dispose (GObject *object) G_OBJECT_CLASS (pdf_document_parent_class)->dispose (object); } -static void -pdf_document_class_init (PdfDocumentClass *klass) -{ - GObjectClass *g_object_class = G_OBJECT_CLASS (klass); - - g_object_class->dispose = pdf_document_dispose; -} - static void pdf_document_init (PdfDocument *pdf_document) { @@ -361,122 +369,6 @@ pdf_document_get_page_label (EvDocument *document, return label; } -static gboolean -pdf_document_has_attachments (EvDocument *document) -{ - PdfDocument *pdf_document; - - pdf_document = PDF_DOCUMENT (document); - - return poppler_document_has_attachments (pdf_document->document); -} - -struct SaveToBufferData { - gchar *buffer; - gsize len, max; -}; - -static gboolean -attachment_save_to_buffer_callback (const gchar *buf, - gsize count, - gpointer user_data, - GError **error) -{ - struct SaveToBufferData *sdata = (SaveToBufferData *)user_data; - gchar *new_buffer; - gsize new_max; - - if (sdata->len + count > sdata->max) { - new_max = MAX (sdata->max * 2, sdata->len + count); - new_buffer = (gchar *)g_realloc (sdata->buffer, new_max); - - sdata->buffer = new_buffer; - sdata->max = new_max; - } - - memcpy (sdata->buffer + sdata->len, buf, count); - sdata->len += count; - - return TRUE; -} - -static gboolean -attachment_save_to_buffer (PopplerAttachment *attachment, - gchar **buffer, - gsize *buffer_size, - GError **error) -{ - static const gint initial_max = 1024; - struct SaveToBufferData sdata; - - *buffer = NULL; - *buffer_size = 0; - - sdata.buffer = (gchar *) g_malloc (initial_max); - sdata.max = initial_max; - sdata.len = 0; - - if (! poppler_attachment_save_to_callback (attachment, - attachment_save_to_buffer_callback, - &sdata, - error)) { - g_free (sdata.buffer); - return FALSE; - } - - *buffer = sdata.buffer; - *buffer_size = sdata.len; - - return TRUE; -} - -static GList * -pdf_document_get_attachments (EvDocument *document) -{ - PdfDocument *pdf_document; - GList *attachments; - GList *list; - GList *retval = NULL; - - pdf_document = PDF_DOCUMENT (document); - - if (!pdf_document_has_attachments (document)) - return NULL; - - attachments = poppler_document_get_attachments (pdf_document->document); - - for (list = attachments; list; list = list->next) { - PopplerAttachment *attachment; - EvAttachment *ev_attachment; - gchar *data = NULL; - gsize size; - GError *error = NULL; - - attachment = (PopplerAttachment *) list->data; - - if (attachment_save_to_buffer (attachment, &data, &size, &error)) { - ev_attachment = ev_attachment_new (attachment->name, - attachment->description, - attachment->mtime, - attachment->ctime, - size, data); - - retval = g_list_prepend (retval, ev_attachment); - } else { - if (error) { - g_warning ("%s", error->message); - g_error_free (error); - - g_free (data); - } - } - - g_object_unref (attachment); - } - - return g_list_reverse (retval); -} - static cairo_surface_t * pdf_page_render (PopplerPage *page, gint width, @@ -487,17 +379,11 @@ pdf_page_render (PopplerPage *page, #ifdef HAVE_POPPLER_PAGE_RENDER cairo_t *cr; - cairo_pattern_t *pattern; surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height); cr = cairo_create (surface); - cairo_save (cr); - cairo_set_source_rgba (cr, 1., 1., 1., 0); - cairo_paint (cr); - cairo_restore (cr); - switch (rc->rotation) { case 90: cairo_translate (cr, width, 0); @@ -515,12 +401,10 @@ pdf_page_render (PopplerPage *page, cairo_rotate (cr, rc->rotation * G_PI / 180.0); poppler_page_render (page, cr); - pattern = cairo_pattern_create_rgb (1., 1., 1.); cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER); - cairo_set_source (cr, pattern); + cairo_set_source_rgb (cr, 1., 1., 1.); cairo_paint (cr); - cairo_pattern_destroy (pattern); cairo_destroy (cr); #else /* HAVE_POPPLER_PAGE_RENDER */ GdkPixbuf *pixbuf; @@ -568,51 +452,18 @@ pdf_document_render (EvDocument *document, width, height, rc); } -/* EvDocumentSecurity */ - -static gboolean -pdf_document_has_document_security (EvDocumentSecurity *document_security) -{ - /* FIXME: do we really need to have this? */ - return FALSE; -} - -static void -pdf_document_set_password (EvDocumentSecurity *document_security, - const char *password) -{ - PdfDocument *document = PDF_DOCUMENT (document_security); - - if (document->password) - g_free (document->password); - - document->password = g_strdup (password); -} - - /* reference: http://www.pdfa.org/lib/exe/fetch.php?id=pdfa%3Aen%3Atechdoc&cache=cache&media=pdfa:techdoc:tn0001_pdfa-1_and_namespaces_2008-03-18.pdf */ static char * -pdf_document_get_format_from_metadata (const char *metadata) +pdf_document_get_format_from_metadata (xmlDocPtr doc, + xmlXPathContextPtr xpathCtx) { - xmlDocPtr doc; - xmlXPathContextPtr xpathCtx; xmlXPathObjectPtr xpathObj; xmlChar *part = NULL; xmlChar *conf = NULL; char *result = NULL; int i; - doc = xmlParseMemory (metadata, strlen (metadata)); - if (doc == NULL) - return NULL; /* invalid xml metadata */ - - xpathCtx = xmlXPathNewContext (doc); - if (xpathCtx == NULL) { - xmlFreeDoc (doc); - return NULL; /* invalid xpath context */ - } - /* add pdf/a namespaces */ xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/"); xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#"); @@ -670,12 +521,159 @@ pdf_document_get_format_from_metadata (const char *metadata) /* Cleanup */ xmlFree (part); xmlFree (conf); - xmlXPathFreeContext (xpathCtx); - xmlFreeDoc (doc); return result; } +static EvDocumentLicense * +pdf_document_get_license_from_metadata (xmlDocPtr doc, + xmlXPathContextPtr xpathCtx) +{ + xmlXPathObjectPtr xpathObj; + xmlChar *marked = NULL; + const char *language_string; + char *aux; + gchar **tags; + gchar *tag, *tag_aux; + int i, j; + EvDocumentLicense *license; + + /* register namespaces */ + xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/"); + xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#"); + xmlXPathRegisterNs (xpathCtx, BAD_CAST "dc", BAD_CAST "http://purl.org/dc/elements/1.1/"); + /* XMP Rights Management Schema */ + xmlXPathRegisterNs (xpathCtx, BAD_CAST "xmpRights", BAD_CAST "http://ns.adobe.com/xap/1.0/rights/"); + /* Creative Commons Schema */ + xmlXPathRegisterNs (xpathCtx, BAD_CAST "cc", BAD_CAST "http://creativecommons.org/ns#"); + + /* checking if the document has been marked as defined on the XMP Rights + * Management Schema */ + xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_MARKED, xpathCtx); + if (xpathObj != NULL) { + if (xpathObj->nodesetval != NULL && + xpathObj->nodesetval->nodeNr != 0) + marked = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]); + xmlXPathFreeObject (xpathObj); + } + + /* a) Not marked => No XMP Rights information */ + if (!marked) { + xmlFree (marked); + return NULL; + } + + license = ev_document_license_new (); + + /* b) Marked False => Public Domain, no copyrighted material and no + * license needed */ + if (g_strrstr ((char *) marked, "False") != NULL) { + license->text = g_strdup (_("This work is in the Public Domain")); + /* c) Marked True => Copyrighted material */ + } else { + /* Checking usage terms as defined by the XMP Rights Management + * Schema. This field is recomended to be checked by Creative + * Commons */ + /* 1) checking for a suitable localized string */ + language_string = pango_language_to_string (gtk_get_default_language ()); + tags = g_strsplit (language_string, "-", -1); + i = g_strv_length (tags); + while (i-- && !license->text) { + tag = g_strdup (tags[0]); + for (j = 1; j <= i; j++) { + tag_aux = g_strdup_printf ("%s-%s", tag, tags[j]); + g_free (tag); + tag = tag_aux; + } + aux = g_strdup_printf (LICENSE_TEXT, tag); + xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx); + if (xpathObj != NULL) { + if (xpathObj->nodesetval != NULL && + xpathObj->nodesetval->nodeNr != 0) + license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]); + xmlXPathFreeObject (xpathObj); + } + g_free (tag); + g_free (aux); + } + g_strfreev(tags); + + /* 2) if not, use the default string */ + if (!license->text) { + aux = g_strdup_printf (LICENSE_TEXT, "x-default"); + xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx); + if (xpathObj != NULL) { + if (xpathObj->nodesetval != NULL && + xpathObj->nodesetval->nodeNr != 0) + license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]); + xmlXPathFreeObject (xpathObj); + } + g_free (aux); + } + + /* Checking the license URI as defined by the Creative Commons + * Schema. This field is recomended to be checked by Creative + * Commons */ + xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_URI, xpathCtx); + if (xpathObj != NULL) { + if (xpathObj->nodesetval != NULL && + xpathObj->nodesetval->nodeNr != 0) + license->uri = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]); + xmlXPathFreeObject (xpathObj); + } + + /* Checking the web statement as defined by the XMP Rights + * Management Schema. Checking it out is a sort of above-and-beyond + * the basic recommendations by Creative Commons. It can be + * considered as a "reinforcement" approach to add certainty. */ + xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_WEB_STATEMENT, xpathCtx); + if (xpathObj != NULL) { + if (xpathObj->nodesetval != NULL && + xpathObj->nodesetval->nodeNr != 0) + license->web_statement = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]); + xmlXPathFreeObject (xpathObj); + } + } + xmlFree (marked); + + if (!license->text && !license->uri && !license->web_statement) { + ev_document_license_free (license); + return NULL; + } + + return license; +} + +static void +pdf_document_parse_metadata (const gchar *metadata, + EvDocumentInfo *info) +{ + xmlDocPtr doc; + xmlXPathContextPtr xpathCtx; + gchar *fmt; + + doc = xmlParseMemory (metadata, strlen (metadata)); + if (doc == NULL) + return; /* invalid xml metadata */ + + xpathCtx = xmlXPathNewContext (doc); + if (xpathCtx == NULL) { + xmlFreeDoc (doc); + return; /* invalid xpath context */ + } + + fmt = pdf_document_get_format_from_metadata (doc, xpathCtx); + if (fmt != NULL) { + g_free (info->format); + info->format = fmt; + } + + info->license = pdf_document_get_license_from_metadata (doc, xpathCtx); + + xmlXPathFreeContext (xpathCtx); + xmlFreeDoc (doc); +} + static EvDocumentInfo * pdf_document_get_info (EvDocument *document) @@ -687,7 +685,6 @@ pdf_document_get_info (EvDocument *document) PopplerPermissions permissions; EvPage *page; char *metadata; - char *fmt; info = g_new0 (EvDocumentInfo, 1); @@ -707,7 +704,8 @@ pdf_document_get_info (EvDocument *document) EV_DOCUMENT_INFO_LINEARIZED | EV_DOCUMENT_INFO_N_PAGES | EV_DOCUMENT_INFO_SECURITY | - EV_DOCUMENT_INFO_PAPER_SIZE; + EV_DOCUMENT_INFO_PAPER_SIZE | + EV_DOCUMENT_INFO_LICENSE; g_object_get (PDF_DOCUMENT (document)->document, "title", &(info->title), @@ -728,24 +726,16 @@ pdf_document_get_info (EvDocument *document) NULL); if (metadata != NULL) { - fmt = pdf_document_get_format_from_metadata(metadata); - if (fmt != NULL) { - g_free (info->format); - info->format = fmt; - } + pdf_document_parse_metadata (metadata, info); g_free (metadata); } info->n_pages = ev_document_get_n_pages (document); if (info->n_pages > 0) { - page = ev_document_get_page (document, 0); - ev_document_get_page_size (document, page, + ev_document_get_page_size (document, 0, &(info->paper_width), &(info->paper_height)); - g_object_unref (page); - - // Convert to mm. info->paper_width = info->paper_width / 72.0f * 25.4f; info->paper_height = info->paper_height / 72.0f * 25.4f; @@ -841,19 +831,42 @@ pdf_document_get_info (EvDocument *document) } static void -pdf_document_document_iface_init (EvDocumentIface *iface) -{ - iface->save = pdf_document_save; - iface->load = pdf_document_load; - iface->get_n_pages = pdf_document_get_n_pages; - iface->get_page = pdf_document_get_page; - iface->get_page_size = pdf_document_get_page_size; - iface->get_page_label = pdf_document_get_page_label; - iface->has_attachments = pdf_document_has_attachments; - iface->get_attachments = pdf_document_get_attachments; - iface->render = pdf_document_render; - iface->get_info = pdf_document_get_info; -}; +pdf_document_class_init (PdfDocumentClass *klass) +{ + GObjectClass *g_object_class = G_OBJECT_CLASS (klass); + EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass); + + g_object_class->dispose = pdf_document_dispose; + + ev_document_class->save = pdf_document_save; + ev_document_class->load = pdf_document_load; + ev_document_class->get_n_pages = pdf_document_get_n_pages; + ev_document_class->get_page = pdf_document_get_page; + ev_document_class->get_page_size = pdf_document_get_page_size; + ev_document_class->get_page_label = pdf_document_get_page_label; + ev_document_class->render = pdf_document_render; + ev_document_class->get_info = pdf_document_get_info; +} + +/* EvDocumentSecurity */ +static gboolean +pdf_document_has_document_security (EvDocumentSecurity *document_security) +{ + /* FIXME: do we really need to have this? */ + return FALSE; +} + +static void +pdf_document_set_password (EvDocumentSecurity *document_security, + const char *password) +{ + PdfDocument *document = PDF_DOCUMENT (document_security); + + if (document->password) + g_free (document->password); + + document->password = g_strdup (password); +} static void pdf_document_security_iface_init (EvDocumentSecurityIface *iface) @@ -1247,7 +1260,7 @@ pdf_document_links_get_links_model (EvDocumentLinks *document_links) static GList * pdf_document_links_get_links (EvDocumentLinks *document_links, - gint page) + EvPage *page) { PdfDocument *pdf_document; PopplerPage *poppler_page; @@ -1257,8 +1270,7 @@ pdf_document_links_get_links (EvDocumentLinks *document_links, double height; pdf_document = PDF_DOCUMENT (document_links); - poppler_page = poppler_document_get_page (pdf_document->document, - page); + poppler_page = POPPLER_PAGE (page->backend_page); mapping_list = poppler_page_get_link_mapping (poppler_page); poppler_page_get_size (poppler_page, NULL, &height); @@ -1280,7 +1292,6 @@ pdf_document_links_get_links (EvDocumentLinks *document_links, } poppler_page_free_link_mapping (mapping_list); - g_object_unref (poppler_page); return g_list_reverse (retval); } @@ -1999,15 +2010,15 @@ pdf_selection_get_selection_region (EvSelection *selection, } static GdkRegion * -pdf_selection_get_selection_map (EvSelection *selection, - EvRenderContext *rc) +pdf_selection_get_selection_map (EvSelection *selection, + EvPage *page) { PopplerPage *poppler_page; PopplerRectangle points; GList *region; GdkRegion *retval; - poppler_page = POPPLER_PAGE (rc->page->backend_page); + poppler_page = POPPLER_PAGE (page->backend_page); points.x1 = 0.0; points.y1 = 0.0; @@ -2498,7 +2509,7 @@ ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot, const gchar *unimplemented_annot = NULL; switch (poppler_annot_get_annot_type (poppler_annot)) { - case POPPLER_ANNOT_TEXT: + case POPPLER_ANNOT_TEXT: { PopplerAnnotText *poppler_text; EvAnnotationText *ev_annot_text; @@ -2508,8 +2519,41 @@ ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot, ev_annot_text = EV_ANNOTATION_TEXT (ev_annot); ev_annot_text->is_open = poppler_annot_text_get_is_open (poppler_text); + } + break; +#ifdef HAVE_POPPLER_ANNOT_FILE_ATTACHMENT_GET_ATTACHMENT + case POPPLER_ANNOT_FILE_ATTACHMENT: { + PopplerAnnotFileAttachment *poppler_annot_attachment; + EvAnnotationAttachment *ev_annot_attachment; + PopplerAttachment *poppler_attachment; + gchar *data = NULL; + gsize size; + GError *error = NULL; + + poppler_annot_attachment = POPPLER_ANNOT_FILE_ATTACHMENT (poppler_annot); + poppler_attachment = poppler_annot_file_attachment_get_attachment (poppler_annot_attachment); + + if (poppler_attachment && + attachment_save_to_buffer (poppler_attachment, &data, &size, &error)) { + EvAttachment *ev_attachment; + + ev_attachment = ev_attachment_new (poppler_attachment->name, + poppler_attachment->description, + poppler_attachment->mtime, + poppler_attachment->ctime, + size, data); + ev_annot = ev_annotation_attachment_new (page, ev_attachment); + g_object_unref (ev_attachment); + } else if (error) { + g_warning ("%s", error->message); + g_error_free (error); + } + if (poppler_attachment) + g_object_unref (poppler_attachment); + } break; +#endif /* HAVE_POPPLER_ANNOT_FILE_ATTACHMENT_GET_ATTACHMENT */ case POPPLER_ANNOT_LINK: case POPPLER_ANNOT_WIDGET: /* Ignore link and widgets annots since they are already handled */ @@ -2663,6 +2707,123 @@ pdf_document_document_annotations_iface_init (EvDocumentAnnotationsIface *iface) iface->annotation_set_contents = pdf_document_annotations_annotation_set_contents; } +/* Attachments */ +struct SaveToBufferData { + gchar *buffer; + gsize len, max; +}; + +static gboolean +attachment_save_to_buffer_callback (const gchar *buf, + gsize count, + gpointer user_data, + GError **error) +{ + struct SaveToBufferData *sdata = (SaveToBufferData *)user_data; + gchar *new_buffer; + gsize new_max; + + if (sdata->len + count > sdata->max) { + new_max = MAX (sdata->max * 2, sdata->len + count); + new_buffer = (gchar *)g_realloc (sdata->buffer, new_max); + + sdata->buffer = new_buffer; + sdata->max = new_max; + } + + memcpy (sdata->buffer + sdata->len, buf, count); + sdata->len += count; + + return TRUE; +} + +static gboolean +attachment_save_to_buffer (PopplerAttachment *attachment, + gchar **buffer, + gsize *buffer_size, + GError **error) +{ + static const gint initial_max = 1024; + struct SaveToBufferData sdata; + + *buffer = NULL; + *buffer_size = 0; + + sdata.buffer = (gchar *) g_malloc (initial_max); + sdata.max = initial_max; + sdata.len = 0; + + if (! poppler_attachment_save_to_callback (attachment, + attachment_save_to_buffer_callback, + &sdata, + error)) { + g_free (sdata.buffer); + return FALSE; + } + + *buffer = sdata.buffer; + *buffer_size = sdata.len; + + return TRUE; +} + +static GList * +pdf_document_attachments_get_attachments (EvDocumentAttachments *document) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document); + GList *attachments; + GList *list; + GList *retval = NULL; + + attachments = poppler_document_get_attachments (pdf_document->document); + + for (list = attachments; list; list = list->next) { + PopplerAttachment *attachment; + EvAttachment *ev_attachment; + gchar *data = NULL; + gsize size; + GError *error = NULL; + + attachment = (PopplerAttachment *) list->data; + + if (attachment_save_to_buffer (attachment, &data, &size, &error)) { + ev_attachment = ev_attachment_new (attachment->name, + attachment->description, + attachment->mtime, + attachment->ctime, + size, data); + + retval = g_list_prepend (retval, ev_attachment); + } else { + if (error) { + g_warning ("%s", error->message); + g_error_free (error); + + g_free (data); + } + } + + g_object_unref (attachment); + } + + return g_list_reverse (retval); +} + +static gboolean +pdf_document_attachments_has_attachments (EvDocumentAttachments *document) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document); + + return poppler_document_has_attachments (pdf_document->document); +} + +static void +pdf_document_document_attachments_iface_init (EvDocumentAttachmentsIface *iface) +{ + iface->has_attachments = pdf_document_attachments_has_attachments; + iface->get_attachments = pdf_document_attachments_get_attachments; +} + /* Layers */ static gboolean pdf_document_layers_has_layers (EvDocumentLayers *document)