Allow some options taking filenames to refer to mpv config dir

Add the mp_get_user_path() function, and make it expand special path
prefixes. Use it for some things in mpv which take filenames
(--input-config, --screenshot-template, opengl icc-profile suboption).

This allows accessing files in the mpv config dir without hardcoding the
config path by prefixing the path with ~~/. Details see manpage
additions.

1 files changed, 22 insertions, 0 deletions

diff --git a/mpvcore/path.c b/mpvcore/path.c
index df138489d6..9de11b24d1 100644
--- a/mpvcore/path.c
+++ b/mpvcore/path.c
@@ -97,6 +97,28 @@ char *mp_find_global_config_file(const char *filename)
     }
 }
 
+char *mp_get_user_path(void *talloc_ctx, const char *path)
+{
+    if (!path)
+        return NULL;
+    bstr bpath = bstr0(path);
+    if (bstr_eatstart0(&bpath, "~")) {
+        // parse to "~" <prefix> "/" <rest>
+        bstr prefix, rest;
+        if (bstr_split_tok(bpath, "/", &prefix, &rest)) {
+            const char *rest0 = rest.start; // ok in this case
+            char *res = NULL;
+            if (bstr_equals0(prefix, "~"))
+                res = talloc_steal(talloc_ctx, mp_find_user_config_file(rest0));
+            if (bstr_equals0(prefix, ""))
+                res = mp_path_join(talloc_ctx, bstr0(getenv("HOME")), rest);
+            if (res)
+                return res;
+        }
+    }
+    return talloc_strdup(talloc_ctx, path);
+}
+
 char *mp_basename(const char *path)
 {
     char *s;