init

2026-03-27 07:06:16 +01:00
commit 1541961403
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+--[[
+
+    Automatically look for a fonts directory to use with `sub-fonts-dir`.
+
+    This mpv Lua script will automatically use the `sub-fonts-dir` option (to
+    override the default `~~/fonts` location) if it find a `Fonts` directory
+    alongside the currently playing file.  (The name of the directory is
+    matched case-insensitively.)
+
+
+    USAGE:
+
+    Simply drop this script in your scripts configuration directory (usually
+    `~/.config/mpv/scripts/`).
+
+
+    REQUIREMENTS:
+
+    This script requires a version of mpv that includes the `sub-fonts-dir`
+    option.
+
+
+    NOTES:
+
+    - Any `--sub-fonts-dir` option passed on the command-line will override
+    this script.
+
+    - When going through a playlist, `sub-fonts-dir` will be dynamically
+    updated for each individual file.
+
+    - This script will output some additional information on higher verbosity
+    levels (`-v`).  To increase the verbosity for this script only, use
+    `--msg-level=sub_fonts_dir_auto=v` (or `=debug` for more output).
+
+
+    AUTHOR:
+
+    Frédéric Brière (fbriere@fbriere.net)
+
+    Licensed under the GNU General Public License, version 2 or later.
+
+--]]
+
+
+local utils = require 'mp.utils'
+local msg = require 'mp.msg'
+-- msg.trace() was added in 0.28.0 -- define it ourselves if it's missing
+if msg.trace == nil then
+    msg.trace = function(...) return mp.log("trace", ...) end
+end
+
+
+-- Directory name we are looking for (case-insensitive)
+local FONTS_DIR_NAME = "Fonts"
+-- Option name that we want to set
+local OPTION_NAME = "sub-fonts-dir"
+-- Make sure this option is available in this version of mpv
+do
+    local _, err = mp.get_property(OPTION_NAME)
+    if err then
+        msg.error(string.format("This version of mpv does not support the %s option", OPTION_NAME))
+        return
+    end
+end
+
+
+-- Whether a path is a directory
+local function isdir(path)
+    local meta, meta_error = utils.file_info(path)
+    if meta and meta.is_dir then
+        return true
+    end
+end
+
+-- Set an option's value for this file, without overriding the command-line
+local function set_option(name, value)
+    if not mp.get_property_bool(string.format("option-info/%s/set-from-commandline", name)) then
+        msg.verbose(string.format("Setting %s to %q", name, value))
+        mp.set_property(string.format("file-local-options/%s", name), value)
+    else
+        msg.debug(string.format("Option %s was set on command-line -- leaving it as-is", name))
+    end
+end
+
+-- Find a "Fonts" directory under a single path
+local function find_fonts_dir(path)
+    local fonts_path = utils.join_path(path, FONTS_DIR_NAME)
+    local meta, meta_error = utils.file_info(fonts_path)
+    if meta and meta.is_dir then
+        msg.trace("Match found")
+        return fonts_path
+    else
+        fonts_path = utils.join_path(path, FONTS_DIR_NAME:lower())
+        local fmeta, fmeta_error = utils.file_info(fonts_path)
+        if fmeta and fmeta.is_dir then
+            msg.trace("Match found")
+            return fonts_path
+        end
+    end
+    msg.trace("No match found")
+end
+
+-- "on_load" hook callback for when a file is about to be loaded.
+local function on_load()
+    local path = mp.get_property("path")
+    if isdir(path) then
+        msg.debug("Playing 'file' is actually a directory -- skipping")
+        return
+    end
+
+    local path_dir = utils.split_path(path)
+    -- Cosmetic nitpicking: That trailing "/" just looks annoying to me
+    path_dir = path_dir:gsub("(.)/+$", "%1")
+
+    msg.debug(string.format("Searching %q for fonts directory", path_dir))
+    local fonts_dir = find_fonts_dir(path_dir)
+    if fonts_dir then
+        msg.debug("Found fonts directory:", fonts_dir)
+        set_option(OPTION_NAME, fonts_dir)
+    end
+end
+mp.add_hook("on_load", 50, on_load)