notmuch show: Use GMime to decode messages.

We now actually get text content rather than blocks of BASE64, etc.

diff --git a/notmuch.c b/notmuch.c
index 4158cc5f098bf13429168a389393beb1c42614dd..201910841e717292f3973967c560fafe4c49f09b 100644 (file)
--- a/notmuch.c
+++ b/notmuch.c
@@ -23,6 +23,8 @@
 #endif
 #include <stdio.h>
 
+#include <gmime/gmime.h>
+
 #include "notmuch.h"
 
 /* This is separate from notmuch-private.h because we're trying to
@@ -896,6 +898,115 @@ _get_one_line_summary (void *ctx, notmuch_message_t *message)
                            from, relative_date, subject);
 }
 
+static void
+show_message_part (GMimeObject *part)
+{
+    GMimeStream *stream;
+    GMimeDataWrapper *wrapper;
+    GMimeContentDisposition *disposition;
+
+    if (GMIME_IS_MULTIPART (part)) {
+       GMimeMultipart *multipart = GMIME_MULTIPART (part);
+       int i;
+
+       for (i = 0; i < g_mime_multipart_get_count (multipart); i++) {
+           if (GMIME_IS_MULTIPART_SIGNED (multipart)) {
+               /* Don't index the signature. */
+               if (i == 1)
+                   continue;
+               if (i > 1)
+                   fprintf (stderr, "Warning: Unexpected extra parts of mutlipart/signed. Continuing.\n");
+           }
+           show_message_part (g_mime_multipart_get_part (multipart, i));
+       }
+       return;
+    }
+
+    if (GMIME_IS_MESSAGE_PART (part)) {
+       GMimeMessage *mime_message;
+
+       mime_message = g_mime_message_part_get_message (GMIME_MESSAGE_PART (part));
+
+       show_message_part (g_mime_message_get_mime_part (mime_message));
+
+       return;
+    }
+
+    if (! (GMIME_IS_PART (part))) {
+       fprintf (stderr, "Warning: Not displaying unknown mime part: %s.\n",
+                g_type_name (G_OBJECT_TYPE (part)));
+       return;
+    }
+
+    disposition = g_mime_object_get_content_disposition (part);
+    if (disposition &&
+       strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
+    {
+       const char *filename = g_mime_part_get_filename (GMIME_PART (part));
+
+       /* XXX: Need to print content type here as well. */
+       printf ("%%attachment{ %s %%attachment}\n", filename);
+       return;
+    }
+
+    /* Stream the MIME part out to stdout. */
+    stream = g_mime_stream_file_new (stdout);
+    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream), FALSE);
+
+    wrapper = g_mime_part_get_content_object (GMIME_PART (part));
+    if (wrapper)
+       g_mime_data_wrapper_write_to_stream (wrapper, stream);
+
+    g_object_unref (stream);
+}
+
+static notmuch_status_t
+show_message_body (const char *filename)
+{
+    GMimeStream *stream = NULL;
+    GMimeParser *parser = NULL;
+    GMimeMessage *mime_message = NULL;
+    notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
+    static int initialized = 0;
+    FILE *file = NULL;
+
+    if (! initialized) {
+       g_mime_init (0);
+       initialized = 1;
+    }
+
+    file = fopen (filename, "r");
+    if (! file) {
+       fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
+       ret = NOTMUCH_STATUS_FILE_ERROR;
+       goto DONE;
+    }
+
+    stream = g_mime_stream_file_new (file);
+    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream), FALSE);
+
+    parser = g_mime_parser_new_with_stream (stream);
+
+    mime_message = g_mime_parser_construct_message (parser);
+
+    show_message_part (g_mime_message_get_mime_part (mime_message));
+
+  DONE:
+    if (mime_message)
+       g_object_unref (mime_message);
+
+    if (parser)
+       g_object_unref (parser);
+
+    if (stream)
+       g_object_unref (stream);
+
+    if (file)
+       fclose (file);
+
+    return ret;
+}
+
 static int
 show_command (void *ctx, unused (int argc), unused (char *argv[]))
 {
@@ -905,10 +1016,7 @@ show_command (void *ctx, unused (int argc), unused (char *argv[]))
     notmuch_query_t *query = NULL;
     notmuch_messages_t *messages;
     notmuch_message_t *message;
-    const char *filename;
-    FILE *file;
     int ret = 0;
-    int c;
 
     const char *headers[] = {
        "Subject", "From", "To", "Cc", "Bcc", "Date"
@@ -963,20 +1071,7 @@ show_command (void *ctx, unused (int argc), unused (char *argv[]))
 
        printf ("%%header}\n");
 
-       filename = notmuch_message_get_filename (message);
-
-       file = fopen (filename, "r");
-       if (file) {
-           size_t header_size = notmuch_message_get_header_size (message);
-           fseek (file, header_size + 1, SEEK_SET);
-           while (1) {
-               c = fgetc (file);
-               if (c == EOF)
-                   break;
-               putchar (c);
-           }
-       }
-       fclose (file);
+       show_message_body (notmuch_message_get_filename (message));
 
        printf ("%%message}\n");