diff options
Diffstat (limited to 'src/luaotfload-main.lua')
| -rw-r--r-- | src/luaotfload-main.lua | 234 |
1 files changed, 5 insertions, 229 deletions
diff --git a/src/luaotfload-main.lua b/src/luaotfload-main.lua index 5ac1421..b633ed7 100644 --- a/src/luaotfload-main.lua +++ b/src/luaotfload-main.lua @@ -65,16 +65,8 @@ luaotfload.module = { --doc]]-- local luatexbase = luatexbase - local require = require -local setmetatable = setmetatable -local type, next = type, next -local stringlower = string.lower -local stringformat = string.format - -local kpsefind_file = kpse.find_file -local lfsisfile = lfs.isfile - +local type = type local add_to_callback = luatexbase.add_to_callback local create_callback = luatexbase.create_callback local reset_callback = luatexbase.reset_callback @@ -177,228 +169,12 @@ load_luaotfload_module "loaders" --- Type1 font wrappers load_luaotfload_module "database" --- Font management. load_luaotfload_module "colors" --- Per-font colors. -if not config.actions.reconfigure () then - logreport ("log", 0, "load", "Post-configuration hooks failed.") -end - ---[[doc-- - - Relying on the \verb|name:| resolver for everything has been the - source of permanent trouble with the database. - With the introduction of the new syntax parser we now have enough - granularity to distinguish between the \XETEX emulation layer and - the genuine \verb|name:| and \verb|file:| lookups of \LUATEX-Fonts. - Another benefit is that we can now easily plug in or replace new - lookup behaviors if necessary. - The name resolver remains untouched, but it calls - \luafunction{fonts.names.resolve()} internally anyways (see - \fileent{luaotfload-database.lua}). - ---doc]]-- - -local filesuffix = file.suffix -local fileremovesuffix = file.removesuffix -local request_resolvers = fonts.definers.resolvers -local formats = fonts.formats -local names = fonts.names -formats.ofm = "type1" - -fonts.encodings.known = fonts.encodings.known or { } - ---[[doc-- +luaotfload.resolvers = load_luaotfload_module "resolvers" --- Font lookup - \identifier{luaotfload} promises easy access to system fonts. - Without additional precautions, this cannot be achieved by - \identifier{kpathsea} alone, because it searches only the - \fileent{texmf} directories by default. - Although it is possible for \identifier{kpathsea} to include extra - paths by adding them to the \verb|OSFONTDIR| environment variable, - this is still short of the goal »\emphasis{it just works!}«. - When building the font database \identifier{luaotfload} scans - system font directories anyways, so we already have all the - information for looking sytem fonts. - With the release version 2.2 the file names are indexed in the - database as well and we are ready to resolve \verb|file:| lookups - this way. - Thus we no longer need to call the \identifier{kpathsea} library in - most cases when looking up font files, only when generating the - database, and when verifying the existence of a file in the - \fileent{texmf} tree. - ---doc]]-- - -local resolve_file = names.font_file_lookup - -local file_resolver = function (specification) - local name = resolve_file (specification.name) - local suffix = filesuffix(name) - if formats[suffix] then - specification.forced = stringlower (suffix) - specification.forcedname = file.removesuffix(name) - else - specification.name = name - end -end - -request_resolvers.file = file_resolver - ---[[doc-- - - We classify as \verb|anon:| those requests that have neither a - prefix nor brackets. According to Khaled\footnote{% - \url{https://github.com/phi-gamma/luaotfload/issues/4#issuecomment-17090553}. - } - they are the \XETEX equivalent of a \verb|name:| request, so we - will be treating them as such. - ---doc]]-- - ---request_resolvers.anon = request_resolvers.name - ---[[doc-- - - There is one drawback, though. - This syntax is also used for requesting fonts in \identifier{Type1} - (\abbrev{tfm}, \abbrev{ofm}) format. - These are essentially \verb|file:| lookups and must be caught - before the \verb|name:| resolver kicks in, lest they cause the - database to update. - Even if we were to require the \verb|file:| prefix for all - \identifier{Type1} requests, tests have shown that certain fonts - still include further fonts (e.~g. \fileent{omlgcb.ofm} will ask - for \fileent{omsecob.tfm}) \emphasis{using the old syntax}. - For this reason, we introduce an extra check with an early return. - ---doc]]-- - -local type1_formats = { "tfm", "ofm", "TFM", "OFM", } - -request_resolvers.anon = function (specification) - local name = specification.name - for i=1, #type1_formats do - local format = type1_formats[i] - local suffix = filesuffix (name) - if resolvers.findfile(name, format) then - local usename = suffix == format and file.removesuffix (name) or name - specification.forcedname = file.addsuffix (usename, format) - specification.forced = format - return - end - end - --- under some weird circumstances absolute paths get - --- passed to the definer; we have to catch them - --- before the name: resolver misinterprets them. - name = specification.specification - local exists, _ = lfsisfile(name) - if exists then --- garbage; we do this because we are nice, - --- not because it is correct - logreport ("log", 1, "load", "file %q exists", name) - logreport ("log", 1, "load", - "... overriding borked anon: lookup with path: lookup") - specification.name = name - request_resolvers.path(specification) - return - end - request_resolvers.name(specification) -end +luaotfload.resolvers.install () ---[[doc-- - - Prior to version 2.2, \identifier{luaotfload} did not distinguish - \verb|file:| and \verb|path:| lookups, causing complications with - the resolver. - Now we test if the requested name is an absolute path in the file - system, otherwise we fall back to the \verb|file:| lookup. - ---doc]]-- - -request_resolvers.path = function (specification) - local name = specification.name - local exists, _ = lfsisfile(name) - if not exists then -- resort to file: lookup - logreport ("log", 0, "load", - "path lookup of %q unsuccessful, falling back to file:", - name) - file_resolver (specification) - else - local suffix = filesuffix (name) - if formats[suffix] then - specification.forced = stringlower (suffix) - specification.name = file.removesuffix(name) - specification.forcedname = name - else - specification.name = name - end - end -end - ---[[doc-- - - {\bfseries EXPERIMENTAL}: - \identifier{kpse}-only resolver, for those who can do without - system fonts. - ---doc]]-- - -request_resolvers.kpse = function (specification) - local name = specification.name - local suffix = filesuffix(name) - if suffix and formats[suffix] then - name = file.removesuffix(name) - if resolvers.findfile(name, suffix) then - specification.forced = stringlower (suffix) - specification.forcedname = name - return - end - end - for t, format in next, formats do --- brute force - if kpse.find_file (name, format) then - specification.forced = t - specification.name = name - return - end - end -end - ---[[doc-- - - The \verb|name:| resolver. - ---doc]]-- - ---- fonts.names.resolvers.name -- Customized version of the ---- generic name resolver. - -request_resolvers.name = function (specification) - local resolver = names.resolve_cached - if config.luaotfload.run.resolver == "normal" then - resolver = names.resolve_name - end - local resolved, subfont = resolver (specification) - if resolved then - logreport ("log", 0, "load", "Lookup/name: %q -> \"%s%s\"", - specification.name, - resolved, - subfont and stringformat ("(%d)", subfont) or "") - specification.resolved = resolved - specification.sub = subfont - specification.forced = stringlower (filesuffix (resolved) or "") - specification.forcedname = resolved - specification.name = fileremovesuffix (resolved) - else - file_resolver (specification) - end -end - ---[[doc-- - - Also {\bfseries EXPERIMENTAL}: custom file resolvers via callback. - ---doc]]-- -create_callback("luaotfload.resolve_font", "simple", dummy_function) - -request_resolvers.my = function (specification) - call_callback("luaotfload.resolve_font", specification) +if not config.actions.reconfigure () then + logreport ("log", 0, "load", "Post-configuration hooks failed.") end --[[doc-- |