From 93afaacb9a5e835f397a46a16286282f19fcf113 Mon Sep 17 00:00:00 2001
From: Elie Roux <elie.roux@telecom-bretagne.eu>
Date: Mon, 24 May 2010 22:53:50 +0300
Subject: First attempt to read fonts.conf

This seems to work OK... the code don't actually use it as there are other things to debug before, but the function that reads the file works ok on mine (please test on yours if you have time).
---
 otfl-font-nms.lua | 63 ++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 53 insertions(+), 10 deletions(-)

diff --git a/otfl-font-nms.lua b/otfl-font-nms.lua
index bfc463a..c01922d 100644
--- a/otfl-font-nms.lua
+++ b/otfl-font-nms.lua
@@ -38,6 +38,7 @@ local splitpath, expandpath = file.split_path, kpse.expand_path
 local glob, basename        = dir.glob, file.basename
 local upper, lower, format  = string.upper, string.lower, string.format
 local gsub, match, rpadd    = string.gsub, string.match, string.rpadd
+local gmatch, sub            = string.gmatch, string.sub
 local utfgsub               = unicode.utf8.gsub
 
 local trace_short    = false --tracing adapted to rebuilding of the database inside a document
@@ -607,16 +608,57 @@ local function read_fcdata(data)
 end
 
 --[[
-  Under Mac OSX, fc-list does not exist and there is no guaranty that OSFONTDIR
-  is correctly filled, so for now we use static paths.
+  TODO: doc
 ]]
 
-local static_osx_dirs = {
-    kpse.expand_path('~') .. "/Library/Fonts",
-    "/Library/Fonts",
-    "/System/Library/Fonts",
-    "/Network/Library/Fonts",
-}
+--[[
+  This function parses /etc/fonts/fonts.conf and returns all the dir it finds.
+  The code is minimal, please report any error it may generate.
+]]
+
+local function read_fonts_conf()
+    local f = io.open("/etc/fonts/fonts.conf")
+    if not f then
+        error("Cannot open the file /etc/fonts/fonts.conf")
+    end
+    local results = {}
+    local incomments = false
+    for line in f:lines() do
+        -- spaghetti code... hmmm...
+        if incomments and sub(line, 1, 3) == '-->' then
+            incomments = false
+        elseif sub(line, 1, 4) == '<!--' then
+            incomments = true
+            texio.write_nl("comment !")
+        else
+            for dir in gmatch(line, '<dir>([^<]+)</dir>') do
+                -- now we need to replace ~ by kpse.expand_path('~')
+                if sub(dir, 1, 1) == '~' then
+                    dir = kpse.expand_path('~') .. sub(dir, 2)
+                end
+                results[#results+1] = dir
+            end
+        end
+    end
+    f:close()
+    return results
+end
+
+local function get_os_dirs()
+    if os.name == 'macosx' then
+        return {
+            kpse.expand_path('~') .. "/Library/Fonts",
+            "/Library/Fonts",
+            "/System/Library/Fonts",
+            "/Network/Library/Fonts",
+        }
+    elseif os.type == "windows" or os.type == "msdos" or os.name == "cygwin" then
+        local windir = os.getenv("WINDIR")
+        return {windir..'\\Fonts',}
+    else
+        return read_fonts_conf()
+    end
+end
 
 local function scan_os_fonts(fontnames, newfontnames)
     --[[
@@ -636,9 +678,10 @@ local function scan_os_fonts(fontnames, newfontnames)
             logs.info("searching in static system directories...")
         end
         count = 0
-        for _,d in ipairs(static_osx_dirs) do
+        local os_dirs = get_os_dirs()
+        for _,d in ipairs(os_dirs) do
             count = count + 1
-            progress(count, #static_osx_dirs)
+            progress(count, #os_dirs)
             scan_dir(d, fontnames, newfontnames, false)
         end
     else
-- 
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