First commit of the update-luatex-font-database script

I think it's quite OK as it is now... all comments are welcome!

1 files changed, 103 insertions, 0 deletions

diff --git a/update-luatex-font-database.lua b/update-luatex-font-database.lua
new file mode 100644
index 0000000..c34c1c2
--- /dev/null
+++ b/update-luatex-font-database.lua
@@ -0,0 +1,103 @@
+#!/usr/bin/env texlua
+-- This file is copyright 2010 Elie Roux and Khaled Hosny and is under CC0
+-- license (see http://creativecommons.org/publicdomain/zero/1.0/legalcode).
+--
+-- This file is a wrapper for the luaotfload-fonts.lua script.
+-- It is part of the luaotfload bundle, please see the luaotfload documentation
+-- for more info.
+
+kpse.set_program_name("luatex")
+
+local name = 'update-luatex-font-database'
+local version = '1.07' -- same version number as luaotfload
+
+-- first we import luaotfload-fonts.lua.
+-- Basically it 'exports' three usefult things: the two overwritable variables
+-- - luaotfload.fonts.basename: the filename of the database
+-- - luaotfload.fonts.directory: the directory of the database
+-- and the function
+-- - luaotfload.fonts.generate: the function to generate the database
+
+local luaotfload_file = kpse.find_file("luaotfload-fonts.lua")
+if not luaotfload_file then
+    texio.write_nl("Error: cannot find 'luaotfload-fonts.lua', exiting.")
+    os.exit(1)
+end
+dofile(luaotfload_file)
+
+local function help_msg()
+    texio.write_nl(string.format([[Usage: %s [OPTION]... 
+    
+Rebuild the LuaTeX font database.
+
+Valid options:
+  -d --dbdir DIRECTORY       writes the database in the specified directory
+  -q --quiet                 don't output anything
+  -v --verbose               be more verbose (print the searched directories)
+  -vv                        print the loaded fonts
+  -vvv                       print all steps of directory searching
+  -V --version               prints the version and exits
+  -h --help                  prints this message
+  --sys                      writes the database for the whole system
+                             (default is only for the user)
+
+The output database file is named otfl-fonts.lua.
+]], name))
+end
+
+local function version_msg()
+    texio.write_nl(string.format(
+        "%s version %s, database version %s.\n", name, version, luaotfload.fonts.version))
+end
+
+-- Command-line processing.
+-- Here we fill cmdargs with the good values, and then analyze it, setting
+-- luaotfload.fonts.log_level luaotfload.fonts.directory if necessary. 
+local function process_cmdline()
+    local waiting_for_dir = false
+    local cmdargs = {}
+    for _, varg in ipairs(arg) do
+        if varg == "-v" or varg == "--verbose" then
+            cmdargs.loglvl = 2
+        elseif varg == "-vv" then
+            cmdargs.loglvl = 3
+        elseif varg == "-vvv" then
+            cmdargs.loglvl = 4
+        elseif varg == "-q" or varg == "--quiet" then
+            cmdargs.loglvl = 0
+        elseif varg == "--version" or varg == "-V" then
+            cmdargs.version = true
+        elseif varg == "--help" or varg == "-h" then
+            cmdargs.help = true
+        elseif varg == "--sys" then
+            cmdargs.sys = true
+        elseif varg == '-d' or varg == '--dbdir' then
+            waiting_for_dir = true
+        elseif string.match(varg, '--dbdir=.+') then
+            cmdargs.dbdir = string.match(varg, '--dbdir=(.+)')
+        elseif string.match(varg, '-d.+') then
+            cmdargs.dbdir = string.match(varg, '-d(.+)')
+        elseif waiting_for_dir == true then
+            cmdargs.dbdir = string.gsub(varg, '^( *= *)', '')
+        else
+            texio.write_nl(string.format("Unknown option '%s', ignoring.", varg))
+        end
+    end
+    if cmdargs.help then
+        help_msg()
+        os.exit(0)
+    elseif cmdargs.version then
+        version_msg()
+        os.exit(0)
+    elseif cmdargs.loglvl then
+        luaotfload.fonts.log_level = cmdargs.loglvl
+    end
+    if cmdargs.sys then
+        luaotfload.fonts.directory = kpse.expand_var("$TEXMFSYSVAR") .. "/tex/"
+    elseif cmdargs.dbdir then
+        luaotfload.fonts.directory = cmdargs.dbdir
+    end
+end
+
+process_cmdline()
+luaotfload.fonts.generate()