From f91763ca68146b026095915fc0ee380ac23ab9ab Mon Sep 17 00:00:00 2001
From: Nickolay V. Shmyrev <nshmyrev@src.gnome.org>
Date: Mon, 03 Apr 2006 00:30:59 +0000
Subject: Add support for PDF attachments. Fixes bug #325143

	* backend/Makefile.am:
	* data/evince-ui.xml:
	* backend/ev-attachment.[ch]:
	* backend/ev-document.[ch]: (ev_document_has_attachments),
	(ev_document_get_attachments):
	* pdf/ev-poppler.cc: (pdf_document_has_attachments),
	(attachment_save_to_buffer), (pdf_document_get_attachments),
	(pdf_document_document_iface_init):
	* shell/Makefile.am:
	* shell/ev-attachment-bar.[ch]:
	* shell/ev-window.c:

 	Add support for PDF attachments. Fixes bug #325143
---
(limited to 'pdf/ev-poppler.cc')

diff --git a/pdf/ev-poppler.cc b/pdf/ev-poppler.cc
index 4fb1d9a..a4be75e 100644
--- a/pdf/ev-poppler.cc
+++ b/pdf/ev-poppler.cc
@@ -34,6 +34,7 @@
 #include "ev-document-security.h"
 #include "ev-document-thumbnails.h"
 #include "ev-selection.h"
+#include "ev-attachment.h"
 
 typedef struct {
 	PdfDocument *document;
@@ -313,7 +314,122 @@ pdf_document_get_links (EvDocument *document,
 
 	return g_list_reverse (retval);
 }
+
+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 GdkPixbuf *
 pdf_document_render_pixbuf (EvDocument   *document,
@@ -551,6 +667,8 @@ pdf_document_document_iface_init (EvDocumentIface *iface)
 	iface->get_page_size = pdf_document_get_page_size;
 	iface->get_page_label = pdf_document_get_page_label;
 	iface->get_links = pdf_document_get_links;
+	iface->has_attachments = pdf_document_has_attachments;
+	iface->get_attachments = pdf_document_get_attachments;
 	iface->render_pixbuf = pdf_document_render_pixbuf;
 	iface->get_text = pdf_document_get_text;
 	iface->can_get_text = pdf_document_can_get_text;
--
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