diff options
Diffstat (limited to 'src/fontloader/misc/fontloader-font-one.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-one.lua | 110 |
1 files changed, 43 insertions, 67 deletions
diff --git a/src/fontloader/misc/fontloader-font-one.lua b/src/fontloader/misc/fontloader-font-one.lua index 8629850..d9b9c65 100644 --- a/src/fontloader/misc/fontloader-font-one.lua +++ b/src/fontloader/misc/fontloader-font-one.lua @@ -29,42 +29,45 @@ local bxor, rshift = bit32.bxor, bit32.rshift local P, S, R, Cmt, C, Ct, Cs, Carg = lpeg.P, lpeg.S, lpeg.R, lpeg.Cmt, lpeg.C, lpeg.Ct, lpeg.Cs, lpeg.Carg local lpegmatch, patterns = lpeg.match, lpeg.patterns -local trace_features = false trackers.register("afm.features", function(v) trace_features = v end) -local trace_indexing = false trackers.register("afm.indexing", function(v) trace_indexing = v end) -local trace_loading = false trackers.register("afm.loading", function(v) trace_loading = v end) -local trace_defining = false trackers.register("fonts.defining", function(v) trace_defining = v end) +local trace_features = false trackers.register("afm.features", function(v) trace_features = v end) +local trace_indexing = false trackers.register("afm.indexing", function(v) trace_indexing = v end) +local trace_loading = false trackers.register("afm.loading", function(v) trace_loading = v end) +local trace_defining = false trackers.register("fonts.defining", function(v) trace_defining = v end) -local report_afm = logs.reporter("fonts","afm loading") +local report_afm = logs.reporter("fonts","afm loading") -local setmetatableindex = table.setmetatableindex -local derivetable = table.derive +local setmetatableindex = table.setmetatableindex +local derivetable = table.derive -local findbinfile = resolvers.findbinfile +local findbinfile = resolvers.findbinfile -local definers = fonts.definers -local readers = fonts.readers -local constructors = fonts.constructors +local definers = fonts.definers +local readers = fonts.readers +local constructors = fonts.constructors -local afm = constructors.handlers.afm -local pfb = constructors.handlers.pfb -local otf = fonts.handlers.otf +local afm = constructors.handlers.afm +local pfb = constructors.handlers.pfb +local otf = fonts.handlers.otf -local otfreaders = otf.readers -local otfenhancers = otf.enhancers +local otfreaders = otf.readers +local otfenhancers = otf.enhancers -local afmfeatures = constructors.features.afm -local registerafmfeature = afmfeatures.register +local afmfeatures = constructors.features.afm +local registerafmfeature = afmfeatures.register -afm.version = 1.512 -- incrementing this number one up will force a re-cache -afm.cache = containers.define("fonts", "afm", afm.version, true) -afm.autoprefixed = true -- this will become false some day (catches texnansi-blabla.*) +local afmenhancers = constructors.enhancers.afm +local registerafmenhancer = afmenhancers.register -afm.helpdata = { } -- set later on so no local for this -afm.syncspace = true -- when true, nicer stretch values +afm.version = 1.512 -- incrementing this number one up will force a re-cache +afm.cache = containers.define("fonts", "one", afm.version, true) +afm.autoprefixed = true -- this will become false some day (catches texnansi-blabla.*) -local overloads = fonts.mappings.overloads +afm.helpdata = { } -- set later on so no local for this +afm.syncspace = true -- when true, nicer stretch values -local applyruntimefixes = fonts.treatments and fonts.treatments.applyfixes +local overloads = fonts.mappings.overloads + +local applyruntimefixes = fonts.treatments and fonts.treatments.applyfixes --[[ldx-- <p>We cache files. Caching is taken care of in the loader. We cheat a bit by adding @@ -76,36 +79,6 @@ fashion and later we transform it to sequences. Then we apply some methods also used in opentype fonts (like <t>tlig</t>).</p> --ldx]]-- -local enhancers = { - -- It's cleaner to implement them after we've seen what we are - -- dealing with. -} - -local steps = { - "unify names", - "add ligatures", - "add extra kerns", - "normalize features", - "check extra features", - "fix names", -- what a hack ... --- "add tounicode data", -} - -local function applyenhancers(data,filename) - for i=1,#steps do - local step = steps[i] - local enhancer = enhancers[step] - if enhancer then - if trace_loading then - report_afm("applying enhancer %a",step) - end - enhancer(data,filename) - else - report_afm("invalid enhancer %a",step) - end - end -end - function afm.load(filename) filename = resolvers.findfile(filename,'afm') or "" if filename ~= "" and not fonts.names.ignoredfile(filename) then @@ -129,7 +102,7 @@ function afm.load(filename) report_afm("reading %a",filename) data = afm.readers.loadfont(filename,pfbname) if data then - applyenhancers(data,filename) + afmenhancers.apply(data,filename) -- otfreaders.addunicodetable(data) -- only when not done yet fonts.mappings.addtounicode(data,filename) -- otfreaders.extend(data) @@ -162,7 +135,7 @@ end local uparser = fonts.mappings.makenameparser() -- each time -enhancers["unify names"] = function(data, filename) +local function enhance_unify_names(data, filename) local unicodevector = fonts.encodings.agl.unicodes -- loaded runtime in context local unicodes = { } local names = { } @@ -218,7 +191,7 @@ end local everywhere = { ["*"] = { ["*"] = true } } -- or: { ["*"] = { "*" } } local noflags = { false, false, false, false } -enhancers["normalize features"] = function(data) +local function enhance_normalize_features(data) local ligatures = setmetatableindex("table") local kerns = setmetatableindex("table") local extrakerns = setmetatableindex("table") @@ -319,9 +292,7 @@ enhancers["normalize features"] = function(data) data.resources.sequences = sequences end -enhancers["check extra features"] = otf.enhancers.enhance - -enhancers["fix names"] = function(data) +local function enhance_fix_names(data) for k, v in next, data.descriptions do local n = v.name local r = overloads[n] @@ -368,14 +339,10 @@ local addthem = function(rawdata,ligatures) end end -enhancers["add ligatures"] = function(rawdata) +local function enhance_add_ligatures(rawdata) addthem(rawdata,afm.helpdata.ligatures) end --- enhancers["add tex ligatures"] = function(rawdata) --- addthem(rawdata,afm.helpdata.texligatures) --- end - --[[ldx-- <p>We keep the extra kerns in separate kerning tables so that we can use them selectively.</p> @@ -388,7 +355,7 @@ them selectively.</p> -- we don't use the character database. (Ok, we can have a context specific -- variant). -enhancers["add extra kerns"] = function(rawdata) -- using shcodes is not robust here +local function enhance_add_extra_kerns(rawdata) -- using shcodes is not robust here local descriptions = rawdata.descriptions local resources = rawdata.resources local unicodes = resources.unicodes @@ -851,3 +818,12 @@ function readers.pfb(specification,method) -- only called when forced swap("specification") return readers.afm(specification,method) end + +-- now we register them + +registerafmenhancer("unify names", enhance_unify_names) +registerafmenhancer("add ligatures", enhance_add_ligatures) +registerafmenhancer("add extra kerns", enhance_add_extra_kerns) +registerafmenhancer("normalize features", enhance_normalize_features) +registerafmenhancer("check extra features", otfenhancers.enhance) +registerafmenhancer("fix names", enhance_fix_names) |