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-rw-r--r--my-evolution/e-summary-rdf.c440
1 files changed, 440 insertions, 0 deletions
diff --git a/my-evolution/e-summary-rdf.c b/my-evolution/e-summary-rdf.c
new file mode 100644
index 0000000000..96ee50c11d
--- /dev/null
+++ b/my-evolution/e-summary-rdf.c
@@ -0,0 +1,440 @@
+/*
+ * e-summary-rdf.c: RDF summary bit.
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ *
+ * Authors: Iain Holmes <iain@ximian.com>
+ *
+ * Based on code by Alan Cox
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <glib.h>
+#include <gnome-xml/parser.h>
+#include <gnome-xml/xmlmemory.h>
+
+#include <gal/widgets/e-unicode.h>
+#include <libgnomevfs/gnome-vfs.h>
+#include "e-summary.h"
+
+struct _ESummaryRDF {
+ GList *rdfs;
+
+ char *html;
+};
+
+typedef struct _RDF {
+ char *uri;
+ char *html;
+ GnomeVFSAsyncHandle *handle;
+ GString *string;
+ char *buffer;
+
+ xmlDocPtr cache;
+ ESummary *summary;
+
+ gboolean shown;
+} RDF;
+
+int xmlSubstituteEntitiesDefaultValue = 1;
+static int wipe_trackers = FALSE;
+
+char *
+e_summary_rdf_get_html (ESummary *summary)
+{
+ GList *rdfs;
+ char *html;
+ GString *string;
+
+ if (summary->rdf == NULL) {
+ return NULL;
+ }
+
+ string = g_string_new ("");
+ for (rdfs = summary->rdf->rdfs; rdfs; rdfs = rdfs->next) {
+ if (((RDF *)rdfs->data)->html == NULL) {
+ continue;
+ }
+
+ g_string_append (string, ((RDF *)rdfs->data)->html);
+ }
+
+ html = string->str;
+ g_string_free (string, FALSE);
+ return html;
+}
+
+/************ RDF Parser *******************/
+
+static char *
+layer_find (xmlNodePtr node,
+ char *match,
+ char *fail)
+{
+ while (node!=NULL) {
+#ifdef RDF_DEBUG
+ xmlDebugDumpNode (stdout, node, 32);
+ printf("%s.\n", node->name);
+#endif
+ if (strcasecmp (node->name, match)==0) {
+ if (node->childs != NULL && node->childs->content != NULL) {
+ return node->childs->content;
+ } else {
+ return fail;
+ }
+ }
+ node = node->next;
+ }
+ return fail;
+}
+
+static char *
+layer_find_url (xmlNodePtr node,
+ char *match,
+ char *fail)
+{
+ char *p = layer_find (node, match, fail);
+ char *r = p;
+ static char *wb = NULL;
+ char *w;
+
+ if (wb) {
+ g_free (wb);
+ }
+
+ wb = w = g_malloc (3 * strlen (p));
+
+ if (*r == ' ') r++; /* Fix UF bug */
+
+ while (*r) {
+ if (memcmp (r, "&amp;", 5) == 0) {
+ *w++ = '&';
+ r += 5;
+ continue;
+ }
+ if (memcmp (r, "&lt;", 4) == 0) {
+ *w++ = '<';
+ r += 4;
+ continue;
+ }
+ if (memcmp (r, "&gt;", 4) == 0) {
+ *w++ = '>';
+ r += 4;
+ continue;
+ }
+ if (*r == '"' || *r == ' '){
+ *w++ = '%';
+ *w++ = "0123456789ABCDEF"[*r/16];
+ *w++ = "0123456789ABCDEF"[*r&15];
+ r++;
+ continue;
+ }
+ *w++ = *r++;
+ }
+ *w = 0;
+ return wb;
+}
+
+static void
+tree_walk (xmlNodePtr root,
+ RDF *r,
+ GString *html)
+{
+ xmlNodePtr walk;
+ xmlNodePtr rewalk = root;
+ xmlNodePtr channel = NULL;
+ xmlNodePtr image = NULL;
+ xmlNodePtr item[16];
+ int items = 0;
+ int limit = 10;
+ int i;
+ char *t, *u;
+ char *tmp;
+
+ /* FIXME: Need arrows */
+ if (r->shown == FALSE) {
+ char *p;
+
+ /* FIXME: Hash table & UID */
+ p = g_strdup_printf ("<font size=\"-2\"><a href=\"rdf://%d\">(+)</a></font> ", r);
+ g_string_append (html, p);
+ g_free (p);
+ } else {
+ char *p;
+
+ /* FIXME: Hash table & UID */
+ p = g_strdup_printf ("<font size=\"-2\"><a href=\"rdf://%d\">(-)</a></font>", r);
+ g_string_append (html, p);
+ g_free (p);
+ }
+
+ do {
+ walk = rewalk;
+ rewalk = NULL;
+
+ while (walk!=NULL){
+#ifdef RDF_DEBUG
+ printf ("%p, %s\n", walk, walk->name);
+#endif
+ if (strcasecmp (walk->name, "rdf") == 0) {
+ rewalk = walk->childs;
+ walk = walk->next;
+ continue;
+ }
+ if (strcasecmp (walk->name, "rss") == 0){
+ rewalk = walk->childs;
+ walk = walk->next;
+ continue;
+ }
+ /* This is the channel top level */
+#ifdef RDF_DEBUG
+ printf ("Top level '%s'.\n", walk->name);
+#endif
+ if (strcasecmp (walk->name, "channel") == 0) {
+ channel = walk;
+ rewalk = channel->childs;
+ }
+ if (strcasecmp (walk->name, "image") == 0) {
+ image = walk;
+ g_print ("Image\n");
+ }
+ if (strcasecmp (walk->name, "item") == 0 && items < 16) {
+ item[items++] = walk;
+ }
+ walk = walk->next;
+ }
+ }
+ while (rewalk);
+
+ if (channel == NULL) {
+ fprintf(stderr, "No channel definition.\n");
+ return;
+ }
+
+ t = layer_find(channel->childs, "title", "");
+ u = layer_find(channel->childs, "link", "");
+
+ if (*u != '\0') {
+ char *full;
+
+ full = g_strdup_printf ("<a href=\"%s\">", u);
+ g_string_append (html, full);
+ }
+ g_string_append (html, e_utf8_from_locale_string (t));
+ if (*u != '\0') {
+ g_string_append (html, "</a>");
+ }
+ g_string_append (html, "</b></dt>");
+
+ if (r->shown == FALSE) {
+ return;
+ }
+
+ g_string_append (html, "<ul>");
+
+ items = MIN (limit, items);
+ for (i = 0; i < items; i++) {
+ char *p = layer_find (item[i]->childs, "title", "No information");
+
+ if (wipe_trackers) {
+ char *p = layer_find_url (item[i]->childs, "link", "");
+ char *x = strchr (p, '?');
+ unsigned char *r, *w;
+ int n;
+ if (x == NULL)
+ continue;
+ x++;
+ r = x;
+ w = x;
+ while (*r) {
+ if (*r == '+') {
+ *w++ = ' ';
+ } else if (*r == '%') {
+ sscanf (r+1, "%02x", &n);
+ *w++ = n;
+ r += 2;
+ } else {
+ *w++ = *r;
+ }
+ r++;
+ }
+ *w = 0;
+ tmp = g_strdup_printf ("<LI><font size=\"-1\"><A href=\"%s\">\n", x+4);
+ g_string_append (html, tmp);
+ g_free (tmp);
+ }
+ else {
+ tmp = g_strdup_printf ("<LI><font size=\"-1\"><A href=\"%s\">\n", layer_find_url(item[i]->childs, "link", ""));
+ g_string_append (html, tmp);
+ g_free (tmp);
+ }
+
+ tmp = g_strdup_printf ("%s\n</A></font></li>", e_utf8_from_locale_string (p));
+ g_string_append (html, tmp);
+ g_free (tmp);
+ }
+ g_string_append (html, "</UL></dl>");
+}
+
+static void
+display_doc (RDF *r)
+{
+ GString *html;
+
+ html = g_string_new ("<dl><dt><img src=\"ico-rdf.png\" align=\"middle\" "
+ "width=\"48\" height=\"48\"><b>");
+
+ tree_walk (r->cache->root, r, html);
+
+ if (r->html != NULL) {
+ g_free (r->html);
+ }
+ r->html = html->str;
+ g_string_free (html, FALSE);
+
+ e_summary_draw (r->summary);
+}
+
+static void
+close_callback (GnomeVFSAsyncHandle *handle,
+ GnomeVFSResult result,
+ RDF *r)
+{
+ char *xml;
+ xmlDocPtr doc;
+
+ if (r->handle == NULL) {
+ g_free (r->buffer);
+ g_string_free (r->string, TRUE);
+ return;
+ }
+
+ r->handle = NULL;
+ g_free (r->buffer);
+ xml = r->string->str;
+ g_string_free (r->string, FALSE);
+
+ if (r->cache != NULL) {
+ xmlFreeDoc (r->cache);
+ }
+
+ doc = xmlParseMemory (xml, strlen (xml));
+ if (doc == NULL) {
+ if (r->html != NULL) {
+ g_free (r->html);
+ }
+ r->html = g_strdup ("<b>Error parsing XML</b>");
+
+ e_summary_draw (r->summary);
+ g_free (xml);
+ return;
+ }
+
+ g_free (xml);
+ r->cache = doc;
+
+ /* Draw it */
+ display_doc (r);
+}
+
+static void
+read_callback (GnomeVFSAsyncHandle *handle,
+ GnomeVFSResult result,
+ gpointer buffer,
+ GnomeVFSFileSize bytes_requested,
+ GnomeVFSFileSize bytes_read,
+ RDF *r)
+{
+ if (result != GNOME_VFS_OK && result != GNOME_VFS_ERROR_EOF) {
+ r->html = g_strdup ("<b>Error downloading RDF</b>");
+
+ e_summary_draw (r->summary);
+ r->handle = NULL;
+ gnome_vfs_async_close (handle,
+ (GnomeVFSAsyncCloseCallback) close_callback, r);
+ return;
+ }
+
+ if (bytes_read == 0) {
+ gnome_vfs_async_close (handle,
+ (GnomeVFSAsyncCloseCallback) close_callback, r);
+ } else {
+ *((char *) buffer + bytes_read) = 0;
+ g_string_append (r->string, (const char *) buffer);
+ gnome_vfs_async_read (handle, buffer, 4095,
+ (GnomeVFSAsyncReadCallback) read_callback, r);
+ }
+}
+
+static void
+open_callback (GnomeVFSAsyncHandle *handle,
+ GnomeVFSResult result,
+ RDF *r)
+{
+ if (result != GNOME_VFS_OK) {
+ r->html = g_strdup ("<b>Error downloading RDF</b>");
+
+ e_summary_draw (r->summary);
+ return;
+ }
+
+ r->string = g_string_new ("");
+ r->buffer = g_new (char, 4096);
+
+ gnome_vfs_async_read (handle, r->buffer, 4095,
+ (GnomeVFSAsyncReadCallback) read_callback, r);
+}
+
+static void
+e_summary_rdf_add_uri (ESummary *summary,
+ const char *uri)
+{
+ RDF *r;
+
+ r = g_new0 (RDF, 1);
+ r->summary = summary;
+ r->uri = g_strdup (uri);
+ r->shown = TRUE;
+ summary->rdf->rdfs = g_list_prepend (summary->rdf->rdfs, r);
+
+ gnome_vfs_async_open (&r->handle, r->uri, GNOME_VFS_OPEN_READ,
+ (GnomeVFSAsyncOpenCallback) open_callback, r);
+}
+
+static void
+e_summary_rdf_protocol (ESummary *summary,
+ const char *uri,
+ void *closure)
+{
+ RDF *r;
+ int a;
+
+ a = atoi (uri + 6);
+ if (a == 0) {
+ g_warning ("A == 0");
+ return;
+ }
+
+ r = (RDF *) GINT_TO_POINTER (a);
+ r->shown = !r->shown;
+
+ display_doc (r);
+}
+
+void
+e_summary_rdf_init (ESummary *summary)
+{
+ ESummaryRDF *rdf;
+
+ g_return_if_fail (summary != NULL);
+ g_return_if_fail (IS_E_SUMMARY (summary));
+
+ rdf = g_new0 (ESummaryRDF, 1);
+ summary->rdf = rdf;
+
+ e_summary_add_protocol_listener (summary, "rdf", e_summary_rdf_protocol, rdf);
+ e_summary_rdf_add_uri (summary, "http://news.gnome.org/gnome-news/rdf");
+ return;
+}
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