summaryrefslogtreecommitdiff
path: root/luaotfload-database.lua
diff options
context:
space:
mode:
Diffstat (limited to 'luaotfload-database.lua')
-rw-r--r--luaotfload-database.lua1049
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