CLI: refactor dumping of tags.

[notmuch] / notmuch-dump.c

diff --git a/notmuch-dump.c b/notmuch-dump.c
index cae1db8a99dcacb8b4a20cfa06bdfa599721a32f..d80ed8b8bc6d94a94afb237cee305617cbea4578 100644 (file)
--- a/notmuch-dump.c
+++ b/notmuch-dump.c
@@ -77,6 +77,69 @@ print_dump_header (gzFile output, int output_format, int include)
              (include & DUMP_INCLUDE_TAGS) ? "tags" : "");
 }
 
+static int
+dump_tags_message (void *ctx,
+                  notmuch_message_t *message, int output_format,
+                  gzFile output,
+                  char **buffer_p, size_t *size_p)
+{
+    int first = 1;
+    const char *message_id;
+
+    message_id = notmuch_message_get_message_id (message);
+
+    if (output_format == DUMP_FORMAT_BATCH_TAG &&
+       strchr (message_id, '\n')) {
+       /* This will produce a line break in the output, which
+        * would be difficult to handle in tools.  However, it's
+        * also impossible to produce an email containing a line
+        * break in a message ID because of unfolding, so we can
+        * safely disallow it. */
+       fprintf (stderr, "Warning: skipping message id containing line break: \"%s\"\n", message_id);
+       return EXIT_SUCCESS;
+    }
+
+    if (output_format == DUMP_FORMAT_SUP) {
+       gzprintf (output, "%s (", message_id);
+    }
+
+    for (notmuch_tags_t *tags = notmuch_message_get_tags (message);
+        notmuch_tags_valid (tags);
+        notmuch_tags_move_to_next (tags)) {
+       const char *tag_str = notmuch_tags_get (tags);
+
+       if (! first)
+           gzputs (output, " ");
+
+       first = 0;
+
+       if (output_format == DUMP_FORMAT_SUP) {
+           gzputs (output, tag_str);
+       } else {
+           if (hex_encode (ctx, tag_str,
+                           buffer_p, size_p) != HEX_SUCCESS) {
+               fprintf (stderr, "Error: failed to hex-encode tag %s\n",
+                        tag_str);
+               return EXIT_FAILURE;
+           }
+           gzprintf (output, "+%s", *buffer_p);
+       }
+    }
+
+    if (output_format == DUMP_FORMAT_SUP) {
+       gzputs (output, ")\n");
+    } else {
+       if (make_boolean_term (ctx, "id", message_id,
+                              buffer_p, size_p)) {
+           fprintf (stderr, "Error quoting message id %s: %s\n",
+                    message_id, strerror (errno));
+           return EXIT_FAILURE;
+       }
+       gzprintf (output, " -- %s\n", *buffer_p);
+    }
+    return EXIT_SUCCESS;
+}
+
 static int
 database_dump_file (notmuch_database_t *notmuch, gzFile output,
                    const char *query_str, int output_format, int include)
@@ -84,7 +147,9 @@ database_dump_file (notmuch_database_t *notmuch, gzFile output,
     notmuch_query_t *query;
     notmuch_messages_t *messages;
     notmuch_message_t *message;
-    notmuch_tags_t *tags;
+    notmuch_status_t status;
+    char *buffer = NULL;
+    size_t buffer_size = 0;
 
     print_dump_header (output, output_format, include);
 
@@ -110,10 +175,6 @@ database_dump_file (notmuch_database_t *notmuch, gzFile output,
      */
     notmuch_query_set_sort (query, NOTMUCH_SORT_UNSORTED);
 
-    char *buffer = NULL;
-    size_t buffer_size = 0;
-    notmuch_status_t status;
-
     status = notmuch_query_search_messages_st (query, &messages);
     if (print_status_query ("notmuch dump", query, status))
        return EXIT_FAILURE;
@@ -121,62 +182,12 @@ database_dump_file (notmuch_database_t *notmuch, gzFile output,
     for (;
         notmuch_messages_valid (messages);
         notmuch_messages_move_to_next (messages)) {
-       int first = 1;
-       const char *message_id;
 
        message = notmuch_messages_get (messages);
-       message_id = notmuch_message_get_message_id (message);
-
-       if (output_format == DUMP_FORMAT_BATCH_TAG &&
-           strchr (message_id, '\n')) {
-           /* This will produce a line break in the output, which
-            * would be difficult to handle in tools.  However, it's
-            * also impossible to produce an email containing a line
-            * break in a message ID because of unfolding, so we can
-            * safely disallow it. */
-           fprintf (stderr, "Warning: skipping message id containing line break: \"%s\"\n", message_id);
-           notmuch_message_destroy (message);
-           continue;
-       }
 
-       if (output_format == DUMP_FORMAT_SUP) {
-           gzprintf (output, "%s (", message_id);
-       }
-
-       for (tags = notmuch_message_get_tags (message);
-            notmuch_tags_valid (tags);
-            notmuch_tags_move_to_next (tags)) {
-           const char *tag_str = notmuch_tags_get (tags);
-
-           if (! first)
-               gzputs (output, " ");
-
-           first = 0;
-
-           if (output_format == DUMP_FORMAT_SUP) {
-               gzputs (output, tag_str);
-           } else {
-               if (hex_encode (notmuch, tag_str,
-                               &buffer, &buffer_size) != HEX_SUCCESS) {
-                   fprintf (stderr, "Error: failed to hex-encode tag %s\n",
-                            tag_str);
-                   return EXIT_FAILURE;
-               }
-               gzprintf (output, "+%s", buffer);
-           }
-       }
-
-       if (output_format == DUMP_FORMAT_SUP) {
-           gzputs (output, ")\n");
-       } else {
-           if (make_boolean_term (notmuch, "id", message_id,
-                                  &buffer, &buffer_size)) {
-                   fprintf (stderr, "Error quoting message id %s: %s\n",
-                            message_id, strerror (errno));
-                   return EXIT_FAILURE;
-           }
-           gzprintf (output, " -- %s\n", buffer);
-       }
+       if (dump_tags_message (notmuch, message, output_format, output,
+                              &buffer, &buffer_size))
+           return EXIT_FAILURE;
 
        notmuch_message_destroy (message);
     }