* mu-maildir: make public mu_maildir_get_maildir_from_path, add tests

src/mu-maildir.c

@@ -339,16 +339,12 @@ is_dotdir_to_ignore (const char* dir)
 static gboolean
 ignore_dir_entry (struct dirent *entry, unsigned char d_type)
 {
-	const char *name;
-	
 	/* if it's not a dir and not a file, ignore it.
 	 * note, this means also symlinks (DT_LNK) are ignored,
 	 * maybe make this optional */
 	if (G_UNLIKELY(d_type != DT_REG && d_type != DT_DIR))
 		return TRUE;
 
-	name = entry->d_name;
-	
 	/* ignore '.' and '..' dirs, as well as .notmuch and
 	 * .nnmaildir */
 
@@ -702,6 +698,28 @@ get_new_path (const char *mdir, const char *mfile, MuFlags flags)
 }
 
 
+char*
+mu_maildir_get_maildir_from_path (const char* path)
+{
+	gchar *mdir;
+
+	/* determine the maildir */
+	mdir = g_path_get_dirname (path);
+	if (!g_str_has_suffix (mdir, "cur") && !g_str_has_suffix (mdir, "new")) {
+		g_warning ("%s: not a valid maildir path: %s",
+			   __FUNCTION__, path);
+		g_free (mdir);
+		return NULL;
+	}
+
+	/* remove the 'cur' or 'new' */
+	mdir[strlen(mdir) - 4] = '\0';
+
+	return mdir;
+}
+
+
+
 char*
 mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
 			 MuFlags newflags)
@@ -713,15 +731,9 @@ mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
 	mfile = newpath = NULL;
 
 	/* determine the maildir */
-	mdir = g_path_get_dirname (oldpath);
-	if (!g_str_has_suffix (mdir, "cur") && !g_str_has_suffix (mdir, "new")) {
-		g_warning ("%s: not a valid maildir path: %s",
-			   __FUNCTION__, oldpath);
-		goto leave;
-	}
-
-	/* remove the 'cur' or 'new' */
-	mdir[strlen(mdir) - 4] = '\0';
+	mdir = mu_maildir_get_maildir_from_path (oldpath);
+	if (!mdir)
+		return NULL;
 
 	/* determine the name of the mailfile, stripped of its flags */
 	mfile = g_path_get_basename (oldpath);
@@ -736,7 +748,7 @@ mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
 	newpath = get_new_path (new_mdir ? new_mdir : mdir,
 				mfile, newflags);
 
-leave:  g_free (mfile);
+	g_free (mfile);
 	g_free (mdir);
 
 	return newpath;

src/mu-maildir.h

@@ -158,6 +158,17 @@ MuFlags mu_maildir_get_flags_from_path (const char* pathname);
 char* mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
 			       MuFlags new_flags);
 
+/**
+ * get the maildir for a certain message path, ie, the path *before*
+ * cur/ or new/
+ *
+ * @param path path for some message
+ *
+ * @return the maildir (free with g_free), or NULL in case of error
+ */
+char* mu_maildir_get_maildir_from_path (const char* path);
+
+
 /**
  * move a message file to another maildir; the function returns the full
  * path to the new message.

src/tests/test-mu-maildir.c

@@ -354,6 +354,31 @@ test_mu_maildir_get_new_path_02 (void)
 }
 
 
+
+static void
+test_mu_maildir_get_maildir_from_path (void)
+{
+	unsigned u;
+
+	struct {
+		const char *path, *exp;
+	} cases[] = {
+		{"/home/foo/Maildir/test/cur/123456:2,FR",
+		 "/home/foo/Maildir/test"},
+		{"/home/foo/Maildir/lala/new/1313038887_0.697:2,",
+		 "/home/foo/Maildir/lala"}
+	};
+
+
+	for (u = 0; u != G_N_ELEMENTS(cases); ++u) {
+		gchar *mdir;
+		mdir = mu_maildir_get_maildir_from_path (cases[u].path);
+		g_assert_cmpstr(mdir,==,cases[u].exp);
+		g_free (mdir);
+	}
+}
+
+
 int
 main (int argc, char *argv[])
 {
@@ -381,6 +406,10 @@ main (int argc, char *argv[])
 	g_test_add_func("/mu-maildir/mu-maildir-get-flags-from-path",
 			test_mu_maildir_get_flags_from_path);
 
+
+	g_test_add_func("/mu-maildir/mu-maildir-get-maildir-from-path",
+			test_mu_maildir_get_maildir_from_path);
+
 	g_log_set_handler (NULL,
 			   G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL| G_LOG_FLAG_RECURSION,
 			   (GLogFunc)black_hole, NULL);