compat: add canonicalize_file_name

[notmuch] / compat / canonicalize_file_name.c

diff --git a/compat/canonicalize_file_name.c b/compat/canonicalize_file_name.c
new file mode 100644 (file)
index 0000000..e92c0f6
--- /dev/null
+++ b/compat/canonicalize_file_name.c
@@ -0,0 +1,18 @@
+#include "compat.h"
+#include <limits.h>
+#undef _GNU_SOURCE
+#include <stdlib.h>
+
+char *
+canonicalize_file_name (const char * path)
+{
+#ifdef PATH_MAX
+    char *resolved_path =  malloc (PATH_MAX+1);
+    if (resolved_path == NULL)
+       return NULL;
+
+    return realpath (path, resolved_path);
+#else
+#error undefined PATH_MAX _and_ missing canonicalize_file_name not supported
+#endif
+}