diff options
Diffstat (limited to 'luaotfload-database.lua')
| -rw-r--r-- | luaotfload-database.lua | 236 |
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 {} |