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authorPhilipp Gesang <phg42.2a@gmail.com>2014-01-14 03:39:37 -0800
committerPhilipp Gesang <phg42.2a@gmail.com>2014-01-14 03:39:37 -0800
commit55578e73e588594cefbced5f345399f7d9106a75 (patch)
tree8e59ec873374842f3c663d8128e19e10fc36a4d8 /luaotfload-database.lua
parent05be8708a9ee3ff36632e90a9c9820cbef3272ca (diff)
parent6232768122e63018a69bfd6159514b60020b75bb (diff)
downloadluaotfload-55578e73e588594cefbced5f345399f7d9106a75.tar.gz
Merge pull request #179 from phi-gamma/texlive2014
move fontconfig configuration file reader into new file ``luaotfload-parsers.lua``
Diffstat (limited to 'luaotfload-database.lua')
-rw-r--r--luaotfload-database.lua236
1 files changed, 3 insertions, 233 deletions
diff --git a/luaotfload-database.lua b/luaotfload-database.lua
index 72b043b..32197cc 100644
--- a/luaotfload-database.lua
+++ b/luaotfload-database.lua
@@ -44,6 +44,8 @@ local P, R, S, lpegmatch
local C, Cc, Cf, Cg, Cs, Ct
= lpeg.C, lpeg.Cc, lpeg.Cf, lpeg.Cg, lpeg.Cs, lpeg.Ct
+local read_fonts_conf = luaotfload.parsers.read_fonts_conf
+
--- Luatex builtins
local load = load
local next = next
@@ -545,7 +547,6 @@ local t1_fullinfo
local load_names
local load_lookups
local read_blacklist
-local read_fonts_conf
local reload_db
local resolve_name
local resolve_cached
@@ -2270,237 +2271,6 @@ local scan_texmf_fonts = function (currentnames, targetnames, dry_run)
return n_scanned, n_new
end
---[[
- For the OS fonts, there are several options:
- - if OSFONTDIR is set (which is the case under windows by default but
- not on the other OSs), it scans it at the same time as the texmf tree,
- in the scan_texmf_fonts.
- - if not:
- - under Windows and Mac OSX, we take a look at some hardcoded directories
- - under Unix, we read /etc/fonts/fonts.conf and read the directories in it
-
- This means that if you have fonts in fancy directories, you need to set them
- in OSFONTDIR.
-]]
-
-local read_fonts_conf
-do --- closure for read_fonts_conf()
-
- local alpha = R("az", "AZ")
- local digit = R"09"
- local tag_name = C(alpha^1)
- local whitespace = S" \n\r\t\v"
- local ws = whitespace^1
- local comment = P"<!--" * (1 - P"--")^0 * P"-->"
-
- ---> header specifica
- local xml_declaration = P"<?xml" * (1 - P"?>")^0 * P"?>"
- local xml_doctype = P"<!DOCTYPE" * ws
- * "fontconfig" * (1 - P">")^0 * P">"
- local header = xml_declaration^-1
- * (xml_doctype + comment + ws)^0
-
- ---> enforce root node
- local root_start = P"<" * ws^-1 * P"fontconfig" * ws^-1 * P">"
- local root_stop = P"</" * ws^-1 * P"fontconfig" * ws^-1 * P">"
-
- local dquote, squote = P[["]], P"'"
- local xml_namestartchar = S":_" + alpha --- ascii only, funk the rest
- local xml_namechar = S":._" + alpha + digit
- local xml_name = ws^-1
- * C(xml_namestartchar * xml_namechar^0)
- local xml_attvalue = dquote * C((1 - S[[%&"]])^1) * dquote * ws^-1
- + squote * C((1 - S[[%&']])^1) * squote * ws^-1
- local xml_attr = Cg(xml_name * P"=" * xml_attvalue)
- local xml_attr_list = Cf(Ct"" * xml_attr^1, rawset)
-
- --[[doc--
- scan_node creates a parser for a given xml tag.
- --doc]]--
- --- string -> bool -> lpeg_t
- local scan_node = function (tag)
- --- Node attributes go into a table with the index “attributes”
- --- (relevant for “prefix="xdg"” and the likes).
- local p_tag = P(tag)
- local with_attributes = P"<" * p_tag
- * Cg(xml_attr_list, "attributes")^-1
- * ws^-1
- * P">"
- local plain = P"<" * p_tag * ws^-1 * P">"
- local node_start = plain + with_attributes
- local node_stop = P"</" * p_tag * ws^-1 * P">"
- --- there is no nesting, the earth is flat ...
- local node = node_start
- * Cc(tag) * C(comment + (1 - node_stop)^1)
- * node_stop
- return Ct(node) -- returns {string, string [, attributes = { key = val }] }
- end
-
- --[[doc--
- At the moment, the interesting tags are “dir” for
- directory declarations, and “include” for including
- further configuration files.
-
- spec: http://freedesktop.org/software/fontconfig/fontconfig-user.html
- --doc]]--
- local include_node = scan_node"include"
- local dir_node = scan_node"dir"
-
- local element = dir_node
- + include_node
- + comment --> ignore
- + P(1-root_stop) --> skip byte
-
- local root = root_start * Ct(element^0) * root_stop
- local p_cheapxml = header * root
-
- --lpeg.print(p_cheapxml) ---> 757 rules with v0.10
-
- --[[doc--
- fonts_conf_scanner() handles configuration files.
- It is called on an abolute path to a config file (e.g.
- /home/luser/.config/fontconfig/fonts.conf) and returns a list
- of the nodes it managed to extract from the file.
- --doc]]--
- --- string -> path list
- local fonts_conf_scanner = function (path)
- local fh = ioopen(path, "r")
- if not fh then
- report("both", 3, "db", "Cannot open fontconfig file %s.", path)
- return
- end
- local raw = fh:read"*all"
- fh:close()
-
- local confdata = lpegmatch(p_cheapxml, raw)
- if not confdata then
- report("both", 3, "db", "Cannot scan fontconfig file %s.", path)
- return
- end
- return confdata
- end
-
- local p_conf = P".conf" * P(-1)
- local p_filter = (1 - p_conf)^1 * p_conf
-
- local conf_filter = function (path)
- if lpegmatch (p_filter, path) then
- return true
- end
- return false
- end
-
- --[[doc--
- read_fonts_conf_indeed() is called with six arguments; the
- latter three are tables that represent the state and are
- always returned.
- The first three are
- · the path to the file
- · the expanded $HOME
- · the expanded $XDG_CONFIG_DIR
- --doc]]--
- --- string -> string -> string -> tab -> tab -> (tab * tab * tab)
- local read_fonts_conf_indeed
- read_fonts_conf_indeed = function (start, home, xdg_home,
- acc, done, dirs_done)
-
- local paths = fonts_conf_scanner(start)
- if not paths then --- nothing to do
- return acc, done, dirs_done
- end
-
- for i=1, #paths do
- local pathobj = paths[i]
- local kind, path = pathobj[1], pathobj[2]
- local attributes = pathobj.attributes
- if attributes and attributes.prefix == "xdg" then
- --- this prepends the xdg root (usually ~/.config)
- path = filejoin(xdg_home, path)
- end
-
- if kind == "dir" then
- if stringsub(path, 1, 1) == "~" then
- path = filejoin(home, stringsub(path, 2))
- end
- --- We exclude paths with texmf in them, as they should be
- --- found anyway; also duplicates are ignored by checking
- --- if they are elements of dirs_done.
- ---
- --- FIXME does this mean we cannot access paths from
- --- distributions (e.g. Context minimals) installed
- --- separately?
- if not (stringfind(path, "texmf") or dirs_done[path]) then
- acc[#acc+1] = path
- dirs_done[path] = true
- end
-
- elseif kind == "include" then
- --- here the path can be four things: a directory or a file,
- --- in absolute or relative path.
- if stringsub(path, 1, 1) == "~" then
- path = filejoin(home, stringsub(path, 2))
- elseif --- if the path is relative, we make it absolute
- not ( lfsisfile(path) or lfsisdir(path) )
- then
- path = filejoin(filedirname(start), path)
- end
- if lfsisfile(path)
- and kpsereadable_file(path)
- and not done[path]
- then
- --- we exclude path with texmf in them, as they should
- --- be found otherwise
- acc = read_fonts_conf_indeed(
- path, home, xdg_home,
- acc, done, dirs_done)
- elseif lfsisdir(path) then --- arrow code ahead
- local config_files = find_files (path, conf_filter)
- for _, filename in next, config_files do
- if not done[filename] then
- acc = read_fonts_conf_indeed(
- filename, home, xdg_home,
- acc, done, dirs_done)
- end
- end
- end --- match “kind”
- end --- iterate paths
- end
-
- --inspect(acc)
- --inspect(done)
- return acc, done, dirs_done
- end --- read_fonts_conf_indeed()
-
- --[[doc--
- read_fonts_conf() sets up an accumulator and two sets
- for tracking what’s been done.
-
- Also, the environment variables HOME and XDG_CONFIG_HOME --
- which are constants anyways -- are expanded so don’t have to
- repeat that over and over again as with the old parser.
- Now they’re just passed on to every call of
- read_fonts_conf_indeed().
-
- read_fonts_conf() is also the only reference visible outside
- the closure.
- --doc]]--
- --- list -> list
- read_fonts_conf = function (path_list)
- local home = kpseexpand_path"~" --- could be os.getenv"HOME"
- local xdg_home = kpseexpand_path"$XDG_CONFIG_HOME"
- if xdg_home == "" then xdg_home = filejoin(home, ".config") end
- local acc = { } ---> list: paths collected
- local done = { } ---> set: files inspected
- local dirs_done = { } ---> set: dirs in list
- for i=1, #path_list do --- we keep the state between files
- acc, done, dirs_done = read_fonts_conf_indeed(
- path_list[i], home, xdg_home,
- acc, done, dirs_done)
- end
- return acc
- end
-end --- read_fonts_conf closure
-
--- TODO stuff those paths into some writable table
--- unit -> string list
local function get_os_dirs ()
@@ -2519,7 +2289,7 @@ local function get_os_dirs ()
"/usr/local/etc/fonts/fonts.conf",
"/etc/fonts/fonts.conf",
}
- local os_dirs = read_fonts_conf(fonts_conves)
+ local os_dirs = read_fonts_conf(fonts_conves, find_files)
return os_dirs
end
return {}