[PATCH 16/18] insert: add --create-folder option

[Peter Wang]

Support an option to create a new folder in the maildir.
---
 notmuch-insert.c |   71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 71 insertions(+), 0 deletions(-)

diff --git a/notmuch-insert.c b/notmuch-insert.c
index a69dfe6..380c520 100644
--- a/notmuch-insert.c
+++ b/notmuch-insert.c
@@ -48,6 +48,70 @@ check_folder_name (const char *folder)
     }
 }
 
+static int
+mkdir_parents (void *ctx, const char *path, int mode)
+{
+    struct stat st;
+    char *pathcopy;
+    char *start;
+    char *end;
+    int ret;
+
+    /* First check the common case: directory already exists. */
+    if (stat (path, &st) == 0) {
+	return (S_ISDIR (st.st_mode)) ? 0 : -1;
+    }
+
+    pathcopy = talloc_strdup (ctx, path);
+    ret = 0;
+
+    for (start = pathcopy; *start != '\0'; start = end + 1) {
+	end = strchr (start + 1, '/');
+	if (!end) {
+	    ret = mkdir (path, mode);
+	    break;
+	}
+	*end = '\0';
+	ret = mkdir (pathcopy, mode);
+	if (ret != 0 && errno != EEXIST) {
+	    break;
+	}
+	*end = '/';
+    }
+
+    talloc_free (pathcopy);
+
+    return ret;
+}
+
+static notmuch_bool_t
+maildir_create (void *ctx, const char *dir)
+{
+    const int mode = 0755;
+    char *subdir;
+    char *end;
+
+    /* Create 'cur' directory, including parent directories. */
+    subdir = talloc_asprintf (ctx, "%s/cur", dir);
+    if (mkdir_parents (ctx, subdir, mode) != 0)
+	return FALSE;
+
+    end = subdir + strlen (subdir);
+
+    /* Create 'new' directory. */
+    strcpy (end - 3, "new");
+    if (mkdir (subdir, mode) != 0 && errno != EEXIST)
+	return FALSE;
+
+    /* Create 'tmp' directory. */
+    strcpy (end - 3, "tmp");
+    if (mkdir (subdir, mode) != 0 && errno != EEXIST)
+	return FALSE;
+
+    talloc_free (subdir);
+    return TRUE;
+}
+
 static notmuch_bool_t
 safe_gethostname (char *hostname, size_t hostname_size)
 {
@@ -253,6 +317,7 @@ notmuch_insert_command (void *ctx, int argc, char *argv[])
     const char **new_tags;
     size_t new_tags_length;
     const char *folder = NULL;
+    notmuch_bool_t create_folder = FALSE;
     tag_operation_t *tag_ops;
     int tag_ops_count = 0;
     char *maildir;
@@ -262,6 +327,7 @@ notmuch_insert_command (void *ctx, int argc, char *argv[])
 
     notmuch_opt_desc_t options[] = {
 	{ NOTMUCH_OPT_STRING, &folder, "folder", 0, 0 },
+	{ NOTMUCH_OPT_BOOLEAN, &create_folder, "create-folder", 0, 0 },
 	{ NOTMUCH_OPT_END, 0, 0, 0, 0 }
     };
 
@@ -328,6 +394,11 @@ notmuch_insert_command (void *ctx, int argc, char *argv[])
 	    return 1;
 	}
 	maildir = talloc_asprintf (ctx, "%s/%s", db_path, folder);
+	if (create_folder && ! maildir_create (ctx, maildir)) {
+	    fprintf (stderr, "Error: creating maildir %s: %s\n",
+		     maildir, strerror (errno));
+	    return 1;
+	}
     } else {
 	maildir = talloc_asprintf (ctx, "%s", db_path);
     }
-- 
1.7.4.4