Add 'cat' subcommand

[notmuch] / notmuch-show.c

diff --git a/notmuch-show.c b/notmuch-show.c
index ea465dec7aa65e7385dd8b3e2170da1c1f79d2a7..f46e0c8218785efb77957fffa048c0d1c0956f87 100644 (file)
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -631,6 +631,89 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))
     return 0;
 }
 
+int
+notmuch_cat_command (void *ctx, unused (int argc), unused (char *argv[]))
+{
+    notmuch_config_t *config;
+    notmuch_database_t *notmuch;
+    notmuch_query_t *query;
+    notmuch_messages_t *messages;
+    notmuch_message_t *message;
+    char *query_string;
+    int i;
+    const char *filename;
+    FILE *file;
+    size_t size;
+    char buf[4096];
+
+    for (i = 0; i < argc && argv[i][0] == '-'; i++) {
+       fprintf (stderr, "Unrecognized option: %s\n", argv[i]);
+       return 1;
+    }
+
+    config = notmuch_config_open (ctx, NULL, NULL);
+    if (config == NULL)
+       return 1;
+
+    query_string = query_string_from_args (ctx, argc, argv);
+    if (query_string == NULL) {
+       fprintf (stderr, "Out of memory\n");
+       return 1;
+    }
+
+    if (*query_string == '\0') {
+       fprintf (stderr, "Error: notmuch cat requires at least one search term.\n");
+       return 1;
+    }
+
+    notmuch = notmuch_database_open (notmuch_config_get_database_path (config),
+                                    NOTMUCH_DATABASE_MODE_READ_ONLY);
+    if (notmuch == NULL)
+       return 1;
+
+    query = notmuch_query_create (notmuch, query_string);
+    if (query == NULL) {
+       fprintf (stderr, "Error: Out of memory\n");
+       return 1;
+    }
+
+    if (notmuch_query_count_messages (query) != 1) {
+       fprintf (stderr, "Error: search term did not match precisely one message.\n");
+       return 1;
+    }
+
+    messages = notmuch_query_search_messages (query);
+    message = notmuch_messages_get (messages);
+
+    if (message == NULL) {
+       fprintf (stderr, "Error: Cannot find matching message.\n");
+       return 1;
+    }
+
+    filename = notmuch_message_get_filename (message);
+    if (filename == NULL) {
+       fprintf (stderr, "Error: Cannot message filename.\n");
+       return 1;
+    }
+
+    file = fopen (filename, "r");
+    if (file == NULL) {
+       fprintf (stderr, "Error: Cannot open file %s: %s\n", filename, strerror (errno));
+       return 1;
+    }
+
+    while (!feof (file)) {
+       size = fread (buf, 1, sizeof (buf), file);
+       fwrite (buf, size, 1, stdout);
+    }
+
+    fclose (file);
+    notmuch_query_destroy (query);
+    notmuch_database_close (notmuch);
+
+    return 0;
+}
+
 int
 notmuch_part_command (void *ctx, unused (int argc), unused (char *argv[]))
 {