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Diffstat (limited to 'luaotfload-database.lua')
| -rw-r--r-- | luaotfload-database.lua | 1049 |
1 files changed, 1049 insertions, 0 deletions
diff --git a/luaotfload-database.lua b/luaotfload-database.lua new file mode 100644 index 0000000..19b04db --- /dev/null +++ b/luaotfload-database.lua @@ -0,0 +1,1049 @@ +if not modules then modules = { } end modules ['luaotfload-database'] = { + version = 2.2, + comment = "companion to luaotfload.lua", + author = "Khaled Hosny and Elie Roux", + copyright = "Luaotfload Development Team", + license = "GNU GPL v2" +} + +--- TODO: if the specification is an absolute filename with a font not in the +--- database, add the font to the database and load it. There is a small +--- difficulty with the filenames of the TEXMF tree that are referenced as +--- relative paths... + +--- Luatex builtins +local load = load +local next = next +local pcall = pcall +local require = require +local tonumber = tonumber + +local iolines = io.lines +local ioopen = io.open +local kpseexpand_path = kpse.expand_path +local kpseexpand_var = kpse.expand_var +local kpselookup = kpse.lookup +local kpsereadable_file = kpse.readable_file +local mathabs = math.abs +local mathmin = math.min +local stringfind = string.find +local stringformat = string.format +local stringgmatch = string.gmatch +local stringgsub = string.gsub +local stringlower = string.lower +local stringsub = string.sub +local stringupper = string.upper +local tableconcat = table.concat +local tablecopy = table.copy +local tablesort = table.sort +local tabletofile = table.tofile +local texiowrite_nl = texio.write_nl +local utf8gsub = unicode.utf8.gsub +local utf8lower = unicode.utf8.lower + +--- these come from Lualibs/Context +local dirglob = dir.glob +local dirmkdirs = dir.mkdirs +local filebasename = file.basename +local filecollapsepath = file.collapsepath or file.collapse_path +local fileextname = file.extname +local fileiswritable = file.iswritable +local filejoin = file.join +local filereplacesuffix = file.replacesuffix +local filesplitpath = file.splitpath or file.split_path +local stringis_empty = string.is_empty +local stringsplit = string.split +local stringstrip = string.strip +local tableappend = table.append +local tabletohash = table.tohash + +--- the font loader namespace is “fonts”, same as in Context +fonts = fonts or { } +fonts.names = fonts.names or { } + +local names = fonts.names + +names.version = 2.2 +names.data = nil +names.path = { + basename = "luaotfload-names.lua", + dir = "", + path = "", +} + +-- We use the cache.* of ConTeXt (see luat-basics-gen), we can +-- use it safely (all checks and directory creations are already done). It +-- uses TEXMFCACHE or TEXMFVAR as starting points. +local writable_path = caches.getwritablepath("names","") +if not writable_path then + error("Impossible to find a suitable writeable cache...") +end +names.path.dir = writable_path +names.path.path = filejoin(writable_path, names.path.basename) + + +---- <FIXME> +--- +--- these lines load some binary module called “lualatex-platform” +--- that doesn’t appear to build with Lua 5.2. I’m going ahead and +--- disable it for the time being until someone clarifies what it +--- is supposed to do and whether we should care to fix it. +--- +--local success = pcall(require, "luatexbase.modutils") +--if success then +-- success = pcall(luatexbase.require_module, +-- "lualatex-platform", "2011/03/30") +-- print(success) +--end + +--local get_installed_fonts +--if success then +-- get_installed_fonts = lualatex.platform.get_installed_fonts +--else +-- function get_installed_fonts() +-- end +--end +---- </FIXME> + +local get_installed_fonts = nil + +--[[doc-- +Auxiliary functions +--doc]]-- + + +local report = logs.names_report + +local sanitize_string = function (str) + if str ~= nil then + return utf8gsub(utf8lower(str), "[^%a%d]", "") + end + return nil +end + +local fontnames_init = function ( ) + return { + mappings = { }, + status = { }, + version = names.version, + } +end + +local make_name = function (path) + return filereplacesuffix(path, "lua"), filereplacesuffix(path, "luc") +end + +--- When loading a lua file we try its binary complement first, which +--- is assumed to be located at an identical path, carrying the suffix +--- .luc. + +local code_cache = { } + +--- string -> (string * table) +local load_lua_file = function (path) + local code = code_cache[path] + if code then return path, code() end + + local foundname = filereplacesuffix(path, "luc") + + local fh = ioopen(foundname, "rb") -- try bin first + if fh then + local chunk = fh:read"*all" + fh:close() + code = load(chunk, "b") + end + + if not code then --- fall back to text file + foundname = filereplacesuffix(path, "lua") + fh = ioopen(foundname, "rb") + if fh then + local chunk = fh:read"*all" + fh:close() + code = load(chunk, "t") + end + end + + if not code then return nil, nil end + + code_cache[path] = code --- insert into memo + return foundname, code() +end + +--- define locals in scope +local find_closest +local font_fullinfo +local load_names +local read_fonts_conf +local reload_db +local resolve +local save_names +local scan_external_dir +local update_names + +load_names = function ( ) + local foundname, data = load_lua_file(names.path.path) + + if data then + report("info", 1, "db", + "Font names database loaded", "%s", foundname) + else + report("info", 0, "db", + [[Font names database not found, generating new one. + This can take several minutes; please be patient.]]) + data = update_names(fontnames_init()) + save_names(data) + end + return data +end + +local fuzzy_limit = 1 --- display closest only + +local style_synonyms = { set = { } } +do + style_synonyms.list = { + regular = { "normal", "roman", + "plain", "book", + "medium", }, + --- TODO note from Élie Roux + --- boldregular was for old versions of Linux Libertine, is it still useful? + --- semibold is in new versions of Linux Libertine, but there is also a bold, + --- not sure it's useful here... + bold = { "demi", "demibold", + "semibold", "boldregular",}, + italic = { "regularitalic", "normalitalic", + "oblique", "slanted", }, + bolditalic = { "boldoblique", "boldslanted", + "demiitalic", "demioblique", + "demislanted", "demibolditalic", + "semibolditalic", }, + } + + for category, synonyms in next, style_synonyms.list do + style_synonyms.set[category] = tabletohash(synonyms, true) + end +end + +--- state of the database +local fonts_loaded = false +local fonts_reloaded = false + +--[[doc-- + +Luatex-fonts, the font-loader package luaotfload imports, comes with +basic file location facilities (see luatex-fonts-syn.lua). +However, the builtin functionality is too limited to be of more than +basic use, which is why we supply our own resolver that accesses the +font database created by the mkluatexfontdb script. + +--doc]]-- + + +--- +--- the request specification has the fields: +--- +--- · features: table +--- · normal: set of { ccmp clig itlc kern liga locl mark mkmk rlig } +--- · ??? +--- · forced: string +--- · lookup: "name" | "file" +--- · method: string +--- · name: string +--- · resolved: string +--- · size: int +--- · specification: string (== <lookup> ":" <name>) +--- · sub: string +--- +--- the return value of “resolve” is the file name of the requested +--- font +--- +--- 'a -> 'a -> table -> (string * string | bool * bool) +--- +--- note by phg: I added a third return value that indicates a +--- successful lookup as this cannot be inferred from the other +--- values. +--- +--- +resolve = function (_,_,specification) -- the 1st two parameters are used by ConTeXt + local name = sanitize_string(specification.name) + local style = sanitize_string(specification.style) or "regular" + + local size + if specification.optsize then + size = tonumber(specification.optsize) + elseif specification.size then + size = specification.size / 65536 + end + + if not fonts_loaded then + names.data = load_names() + fonts_loaded = true + end + + local data = names.data + if type(data) == "table" then + local db_version, nms_version = data.version, names.version + if data.version ~= names.version then + report("log", 0, "db", + [[version mismatch; expected %4.3f, got %4.3f]], + nms_version, db_version + ) + return reload_db(resolve, nil, nil, specification) + end + if data.mappings then + local found = { } + local synonym_set = style_synonyms.set + for _,face in next, data.mappings do + --- TODO we really should store those in dedicated + --- .sanitized field + local family = sanitize_string(face.names and face.names.family) + local subfamily = sanitize_string(face.names and face.names.subfamily) + local fullname = sanitize_string(face.names and face.names.fullname) + local psname = sanitize_string(face.names and face.names.psname) + local fontname = sanitize_string(face.fontname) + local pfullname = sanitize_string(face.fullname) + local optsize, dsnsize, maxsize, minsize + if #face.size > 0 then + optsize = face.size + dsnsize = optsize[1] and optsize[1] / 10 + -- can be nil + maxsize = optsize[2] and optsize[2] / 10 or dsnsize + minsize = optsize[3] and optsize[3] / 10 or dsnsize + end + if name == family then + if subfamily == style then + if optsize then + if dsnsize == size + or (size > minsize and size <= maxsize) then + found[1] = face + break + else + found[#found+1] = face + end + else + found[1] = face + break + end + elseif synonym_set[style] and + synonym_set[style][subfamily] then + if optsize then + if dsnsize == size + or (size > minsize and size <= maxsize) then + found[1] = face + break + else + found[#found+1] = face + end + else + found[1] = face + break + end + elseif subfamily == "regular" or + synonym_set.regular[subfamily] then + found.fallback = face + end + else + if name == fullname + or name == pfullname + or name == fontname + or name == psname then + if optsize then + if dsnsize == size + or (size > minsize and size <= maxsize) then + found[1] = face + break + else + found[#found+1] = face + end + else + found[1] = face + break + end + end + end + end + if #found == 1 then + if kpselookup(found[1].filename[1]) then + report("log", 0, "resolve", + "font family='%s', subfamily='%s' found: %s", + name, style, found[1].filename[1] + ) + return found[1].filename[1], found[1].filename[2], true + end + elseif #found > 1 then + -- we found matching font(s) but not in the requested optical + -- sizes, so we loop through the matches to find the one with + -- least difference from the requested size. + local closest + local least = math.huge -- initial value is infinity + for i,face in next, found do + local dsnsize = face.size[1]/10 + local difference = mathabs(dsnsize-size) + if difference < least then + closest = face + least = difference + end + end + if kpselookup(closest.filename[1]) then + report("log", 0, "resolve", + "font family='%s', subfamily='%s' found: %s", + name, style, closest.filename[1] + ) + return closest.filename[1], closest.filename[2], true + end + elseif found.fallback then + return found.fallback.filename[1], found.fallback.filename[2], true + end + --- no font found so far + if not fonts_reloaded then + --- last straw: try reloading the database + return reload_db(resolve, nil, nil, specification) + else + --- else, fallback to requested name + --- specification.name is empty with absolute paths, looks + --- like a bug in the specification parser <TODO< is it still + --- relevant? looks not... + return specification.name, false, false + end + end + else --- no db or outdated; reload names and retry + if not fonts_reloaded then + return reload_db(resolve, nil, nil, specification) + else --- unsucessfully reloaded; bail + return specification.name, false, false + end + end +end --- resolve() + +--- when reload is triggered we update the database +--- and then re-run the caller with the arg list + +--- ('a -> 'a) -> 'a list -> 'a +reload_db = function (caller, ...) + report("log", 1, "db", "reload initiated") + names.data = update_names() + save_names(names.data) + fonts_reloaded = true + return caller(...) +end + +--- string -> string -> int +local iterative_levenshtein = function (s1, s2) + + local costs = { } + local len1, len2 = #s1, #s2 + + for i = 0, len1 do + local last = i + for j = 0, len2 do + if i == 0 then + costs[j] = j + else + if j > 0 then + local current = costs[j-1] + if stringsub(s1, i, i) ~= stringsub(s2, j, j) then + current = mathmin(current, last, costs[j]) + 1 + end + costs[j-1] = last + last = current + end + end + end + if i > 0 then costs[len2] = last end + end + + return costs[len2]--- lower right has the distance +end + +--- string -> int -> bool +find_closest = function (name, limit) + local name = sanitize_string(name) + limit = limit or fuzzy_limit + + if not fonts_loaded then + names.data = load_names() + fonts_loaded = true + end + + local data = names.data + + if type(data) == "table" then + local by_distance = { } --- (int, string list) dict + local distances = { } --- int list + local cached = { } --- (string, int) dict + local mappings = data.mappings + local n_fonts = #mappings + + for n = 1, n_fonts do + local current = mappings[n] + local cnames = current.names + --[[ + This is simplistic but surpisingly fast. + Matching is performed against the “family” name + of a db record. We then store its “fullname” at + it edit distance. + We should probably do some weighting over all the + font name categories as well as whatever agrep + does. + --]] + if cnames then + local fullname, family = cnames.fullname, cnames.family + family = sanitize_string(family) + + local dist = cached[family]--- maybe already calculated + if not dist then + dist = iterative_levenshtein(name, family) + cached[family] = dist + end + local namelst = by_distance[dist] + if not namelst then --- first entry + namelst = { fullname } + distances[#distances+1] = dist + else --- append + namelst[#namelst+1] = fullname + end + by_distance[dist] = namelst + end + end + + --- print the matches according to their distance + local n_distances = #distances + if n_distances > 0 then --- got some data + tablesort(distances) + limit = mathmin(n_distances, limit) + report(false, 1, "query", + "displaying %d distance levels", limit) + + for i = 1, limit do + local dist = distances[i] + local namelst = by_distance[dist] + report(false, 0, "query", + "distance from “" .. name .. "”: " .. dist + .. "\n " .. tableconcat(namelst, "\n ") + ) + end + + return true + end + return false + else --- need reload + return reload_db(find_closest, name) + end + return false +end --- find_closest() + +--[[doc-- +The data inside an Opentype font file can be quite heterogeneous. +Thus in order to get the relevant information, parts of the original +table as returned by the font file reader need to be relocated. +--doc]]-- +font_fullinfo = function (filename, subfont, texmf) + local tfmdata = { } + local rawfont = fontloader.open(filename, subfont) + if not rawfont then + report("log", 1, "error", "failed to open %s", filename) + return + end + local metadata = fontloader.to_table(rawfont) + fontloader.close(rawfont) + collectgarbage("collect") + -- see http://www.microsoft.com/typography/OTSPEC/features_pt.htm#size + if metadata.fontstyle_name then + for _, name in next, metadata.fontstyle_name do + if name.lang == 1033 then --- I hate magic numbers + tfmdata.fontstyle_name = name.name + end + end + end + if metadata.names then + for _, namedata in next, metadata.names do + if namedata.lang == "English (US)" then + tfmdata.names = { + --- see + --- https://developer.apple.com/fonts/TTRefMan/RM06/Chap6name.html + fullname = namedata.names.compatfull + or namedata.names.fullname, + family = namedata.names.preffamilyname + or namedata.names.family, + subfamily= tfmdata.fontstyle_name + or namedata.names.prefmodifiers + or namedata.names.subfamily, + psname = namedata.names.postscriptname + } + end + end + else + -- no names table, propably a broken font + report("log", 1, "db", "broken font rejected", "%s", basefile) + return + end + tfmdata.fontname = metadata.fontname + tfmdata.fullname = metadata.fullname + tfmdata.familyname = metadata.familyname + tfmdata.filename = { + texmf and filebasename(filename) or filename, + subfont + } + tfmdata.weight = metadata.pfminfo.weight + tfmdata.width = metadata.pfminfo.width + tfmdata.slant = metadata.italicangle + -- don't waste the space with zero values + tfmdata.size = { + metadata.design_size ~= 0 and metadata.design_size or nil, + metadata.design_range_top ~= 0 and metadata.design_range_top or nil, + metadata.design_range_bottom ~= 0 and metadata.design_range_bottom or nil, + } + return tfmdata +end + +local load_font = function (filename, fontnames, newfontnames, texmf) + local newmappings = newfontnames.mappings + local newstatus = newfontnames.status + local mappings = fontnames.mappings + local status = fontnames.status + local basename = filebasename(filename) + local basefile = texmf and basename or filename + if filename then + if names.blacklist[filename] or + names.blacklist[basename] then + report("log", 2, "db", "ignoring font", "%s", filename) + return + end + local timestamp, db_timestamp + db_timestamp = status[basefile] and status[basefile].timestamp + timestamp = lfs.attributes(filename, "modification") + + local index_status = newstatus[basefile] or (not texmf and newstatus[basename]) + if index_status and index_status.timestamp == timestamp then + -- already indexed this run + return + end + + newstatus[basefile] = newstatus[basefile] or { } + newstatus[basefile].timestamp = timestamp + newstatus[basefile].index = newstatus[basefile].index or { } + + if db_timestamp == timestamp and not newstatus[basefile].index[1] then + for _,v in next, status[basefile].index do + local index = #newstatus[basefile].index + newmappings[#newmappings+1] = mappings[v] + newstatus[basefile].index[index+1] = #newmappings + end + report("log", 1, "db", "font already indexed", "%s", basefile) + return + end + local info = fontloader.info(filename) + if info then + if type(info) == "table" and #info > 1 then + for i in next, info do + local fullinfo = font_fullinfo(filename, i-1, texmf) + if not fullinfo then + return + end + local index = newstatus[basefile].index[i] + if newstatus[basefile].index[i] then + index = newstatus[basefile].index[i] + else + index = #newmappings+1 + end + newmappings[index] = fullinfo + newstatus[basefile].index[i] = index + end + else + local fullinfo = font_fullinfo(filename, false, texmf) + if not fullinfo then + return + end + local index + if newstatus[basefile].index[1] then + index = newstatus[basefile].index[1] + else + index = #newmappings+1 + end + newmappings[index] = fullinfo + newstatus[basefile].index[1] = index + end + else + report("log", 1, "db", "failed to load", "%s", basefile) + end + end +end + +local function path_normalize(path) + --[[ + path normalization: + - a\b\c -> a/b/c + - a/../b -> b + - /cygdrive/a/b -> a:/b + - reading symlinks under non-Win32 + - using kpse.readable_file on Win32 + ]] + if os.type == "windows" or os.type == "msdos" or os.name == "cygwin" then + path = stringgsub(path, '\\', '/') + path = stringlower(path) + path = stringgsub(path, '^/cygdrive/(%a)/', '%1:/') + end + if os.type ~= "windows" and os.type ~= "msdos" then + local dest = lfs.readlink(path) + if dest then + if kpsereadable_file(dest) then + path = dest + elseif kpsereadable_file(filejoin(file.dirname(path), dest)) then + path = filejoin(file.dirname(path), dest) + else + -- broken symlink? + end + end + end + path = filecollapsepath(path) + return path +end + +fonts.path_normalize = path_normalize + +names.blacklist = { } + +local function read_blacklist() + local files = { + kpselookup("luaotfload-blacklist.cnf", {all=true, format="tex"}) + } + local blacklist = names.blacklist + local whitelist = { } + + if files and type(files) == "table" then + for _,v in next, files do + for line in iolines(v) do + line = stringstrip(line) -- to get rid of lines like " % foo" + local first_chr = stringsub(line, 1, 1) --- faster than find + if first_chr == "%" or stringis_empty(line) then + -- comment or empty line + else + --- this is highly inefficient + line = stringsplit(line, "%")[1] + line = stringstrip(line) + if stringsub(line, 1, 1) == "-" then + whitelist[stringsub(line, 2, -1)] = true + else + report("log", 2, "db", "blacklisted file", "%s", line) + blacklist[line] = true + end + end + end + end + end + for _,fontname in next, whitelist do + blacklist[fontname] = nil + end +end + +local font_extensions = { "otf", "ttf", "ttc", "dfont" } +local font_extensions_set = {} +for key, value in next, font_extensions do + font_extensions_set[value] = true +end + +--local installed_fonts_scanned = false --- ugh + +--- we already have scan_os_fonts don’t we? + +--local function scan_installed_fonts(fontnames, newfontnames) +-- --- Try to query and add font list from operating system. +-- --- This uses the lualatex-platform module. +-- --- <phg>what for? why can’t we do this in Lua?</phg> +-- report("info", 0, "Scanning fonts known to operating system...") +-- local fonts = get_installed_fonts() +-- if fonts and #fonts > 0 then +-- installed_fonts_scanned = true +-- report("log", 2, "operating system fonts found", "%d", #fonts) +-- for key, value in next, fonts do +-- local file = value.path +-- if file then +-- local ext = fileextname(file) +-- if ext and font_extensions_set[ext] then +-- file = path_normalize(file) +-- report("log", 1, "loading font", "%s", file) +-- load_font(file, fontnames, newfontnames, false) +-- end +-- end +-- end +-- else +-- report("log", 2, "Could not retrieve list of installed fonts") +-- end +--end + +local function scan_dir(dirname, fontnames, newfontnames, texmf) + --[[ + This function scans a directory and populates the list of fonts + with all the fonts it finds. + - dirname is the name of the directory to scan + - names is the font database to fill + - texmf is a boolean saying if we are scanning a texmf directory + ]] + local list, found = { }, { } + local nbfound = 0 + report("log", 2, "db", "scanning", "%s", dirname) + for _,i in next, font_extensions do + for _,ext in next, { i, stringupper(i) } do + found = dirglob(stringformat("%s/**.%s$", dirname, ext)) + -- note that glob fails silently on broken symlinks, which happens + -- sometimes in TeX Live. + report("log", 2, "db", + "fonts found", "%s '%s' fonts found", #found, ext) + nbfound = nbfound + #found + tableappend(list, found) + end + end + report("log", 2, "db", + "fonts found", "%d fonts found in '%s'", nbfound, dirname) + + for _,file in next, list do + file = path_normalize(file) + report("log", 1, "db", + "loading font", "%s", file) + load_font(file, fontnames, newfontnames, texmf) + end +end + +local function scan_texmf_fonts(fontnames, newfontnames) + --[[ + This function scans all fonts in the texmf tree, through kpathsea + variables OPENTYPEFONTS and TTFONTS of texmf.cnf + ]] + if stringis_empty(kpseexpand_path("$OSFONTDIR")) then + report("info", 1, "db", "Scanning TEXMF fonts...") + else + report("info", 1, "db", "Scanning TEXMF and OS fonts...") + end + local fontdirs = stringgsub(kpseexpand_path("$OPENTYPEFONTS"), "^%.", "") + fontdirs = fontdirs .. stringgsub(kpseexpand_path("$TTFONTS"), "^%.", "") + if not stringis_empty(fontdirs) then + for _,d in next, filesplitpath(fontdirs) do + scan_dir(d, fontnames, newfontnames, true) + end + end +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. +]] + +--- (string -> tab -> tab -> tab) +read_fonts_conf = function (path, results, passed_paths) + --[[ + 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. + + TODO fonts.conf are some kind of XML so in theory the following + is totally inappropriate. Maybe a future version of the + lualibs will include the lxml-* files from Context so we + can write something presentable instead. + ]] + local fh = ioopen(path) + passed_paths[#passed_paths+1] = path + passed_paths_set = tabletohash(passed_paths, true) + if not fh then + report("log", 2, "db", "cannot open file", "%s", path) + return results + end + local incomments = false + for line in fh:lines() do + while line and line ~= "" do + -- spaghetti code... hmmm... + if incomments then + local tmp = stringfind(line, '-->') --- wtf? + if tmp then + incomments = false + line = stringsub(line, tmp+3) + else + line = nil + end + else + local tmp = stringfind(line, '<!--') + local newline = line + if tmp then + -- for the analysis, we take everything that is before the + -- comment sign + newline = stringsub(line, 1, tmp-1) + -- and we loop again with the comment + incomments = true + line = stringsub(line, tmp+4) + else + -- if there is no comment start, the block after that will + -- end the analysis, we exit the while loop + line = nil + end + for dir in stringgmatch(newline, '<dir>([^<]+)</dir>') do + -- now we need to replace ~ by kpse.expand_path('~') + if stringsub(dir, 1, 1) == '~' then + dir = filejoin(kpseexpand_path('~'), stringsub(dir, 2)) + end + -- we exclude paths with texmf in them, as they should be + -- found anyway + if not stringfind(dir, 'texmf') then + results[#results+1] = dir + end + end + for include in stringgmatch(newline, '<include[^<]*>([^<]+)</include>') do + -- include here can be four things: a directory or a file, + -- in absolute or relative path. + if stringsub(include, 1, 1) == '~' then + include = filejoin(kpseexpand_path('~'),stringsub(include, 2)) + -- First if the path is relative, we make it absolute: + elseif not lfs.isfile(include) and not lfs.isdir(include) then + include = filejoin(file.dirname(path), include) + end + if lfs.isfile(include) + and kpsereadable_file(include) + and not passed_paths_set[include] + then + -- maybe we should prevent loops here? + -- we exclude path with texmf in them, as they should + -- be found otherwise + read_fonts_conf(include, results, passed_paths) + elseif lfs.isdir(include) then + for _,f in next, dirglob(filejoin(include, "*.conf")) do + if not passed_paths_set[f] then + read_fonts_conf(f, results, passed_paths) + end + end + end + end + end + end + end + fh:close() + return results +end + +-- for testing purpose +names.read_fonts_conf = read_fonts_conf + +--- TODO stuff those paths into some writable table +local function get_os_dirs() + if os.name == 'macosx' then + return { + filejoin(kpseexpand_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 { filejoin(windir, 'Fonts') } + else + local passed_paths = {} + local os_dirs = {} + -- what about ~/config/fontconfig/fonts.conf etc? + -- Answer: they should be included by the others, please report if it's not + for _,p in next, {"/usr/local/etc/fonts/fonts.conf", "/etc/fonts/fonts.conf"} do + if lfs.isfile(p) then + read_fonts_conf(p, os_dirs, passed_paths) + end + end + return os_dirs + end + return {} +end + +local function scan_os_fonts(fontnames, newfontnames) + --[[ + This function scans the OS fonts through + - fontcache for Unix (reads the fonts.conf file and scans the directories) + - a static set of directories for Windows and MacOSX + ]] + report("info", 1, "db", "Scanning OS fonts...") + report("info", 2, "db", "Searching in static system directories...") + for _,d in next, get_os_dirs() do + scan_dir(d, fontnames, newfontnames, false) + end +end + +update_names = function (fontnames, force) + --[[ + The main function, scans everything + - fontnames is the final table to return + - force is whether we rebuild it from scratch or not + ]] + report("info", 1, "db", "Updating the font names database") + + if force then + fontnames = fontnames_init() + else + if not fontnames then + fontnames = load_names() + end + if fontnames.version ~= names.version then + fontnames = fontnames_init() + report("log", 1, "db", "No font names database or old " + .. "one found; generating new one") + end + end + local newfontnames = fontnames_init() + read_blacklist() + --installed_fonts_scanned = false + --scan_installed_fonts(fontnames, newfontnames) --- see fixme above + scan_texmf_fonts(fontnames, newfontnames) + --if not installed_fonts_scanned + --and stringis_empty(kpseexpand_path("$OSFONTDIR")) + if stringis_empty(kpseexpand_path("$OSFONTDIR")) + then + scan_os_fonts(fontnames, newfontnames) + end + return newfontnames +end + +save_names = function (fontnames) + local path = names.path.dir + if not lfs.isdir(path) then + dirmkdirs(path) + end + path = filejoin(path, names.path.basename) + if fileiswritable(path) then + local luaname, lucname = make_name(path) + tabletofile(luaname, fontnames, true) + caches.compile(fontnames,luaname,lucname) + report("info", 0, "db", "Font names database saved") + return path + else + report("info", 0, "db", "Failed to save names database") + return nil + end +end + +scan_external_dir = function (dir) + local old_names, new_names + if fonts_loaded then + old_names = names.data + else + old_names = load_names() + fonts_loaded = true + end + new_names = tablecopy(old_names) + scan_dir(dir, old_names, new_names) + names.data = new_names +end + +--- export functionality to the namespace “fonts.names” +names.scan = scan_external_dir +names.load = load_names +names.update = update_names +names.save = save_names + +names.resolve = resolve --- replace the resolver from luatex-fonts +names.resolvespec = resolve +names.find_closest = find_closest + +--- dummy required by luatex-fonts (cf. luatex-fonts-syn.lua) + +fonts.names.getfilename = function (askedname,suffix) return "" end + +-- vim:tw=71:sw=4:ts=4:expandtab |