diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-otd.lua | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/src/fontloader/misc/fontloader-font-otd.lua b/src/fontloader/misc/fontloader-font-otd.lua deleted file mode 100644 index 64cb1bc..0000000 --- a/src/fontloader/misc/fontloader-font-otd.lua +++ /dev/null @@ -1,268 +0,0 @@ -if not modules then modules = { } end modules ['font-otd'] = { - version = 1.001, - comment = "companion to font-ini.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - -local type = type -local match = string.match -local sequenced = table.sequenced - -local trace_dynamics = false trackers.register("otf.dynamics", function(v) trace_dynamics = v end) -local trace_applied = false trackers.register("otf.applied", function(v) trace_applied = v end) - -local report_otf = logs.reporter("fonts","otf loading") -local report_process = logs.reporter("fonts","otf process") - -local allocate = utilities.storage.allocate - -local fonts = fonts -local otf = fonts.handlers.otf -local hashes = fonts.hashes -local definers = fonts.definers -local constructors = fonts.constructors -local specifiers = fonts.specifiers - -local fontidentifiers = hashes.identifiers -local fontresources = hashes.resources -local fontproperties = hashes.properties -local fontdynamics = hashes.dynamics - -local contextsetups = specifiers.contextsetups -local contextnumbers = specifiers.contextnumbers -local contextmerged = specifiers.contextmerged - -local setmetatableindex = table.setmetatableindex - -local a_to_script = { } -local a_to_language = { } - --- we can have a scripts hash in fonts.hashes - -function otf.setdynamics(font,attribute) - -- local features = contextsetups[contextnumbers[attribute]] -- can be moved to caller - local features = contextsetups[attribute] - if features then - local dynamics = fontdynamics[font] - dynamic = contextmerged[attribute] or 0 - local script, language - if dynamic == 2 then -- merge - language = features.language or fontproperties[font].language or "dflt" - script = features.script or fontproperties[font].script or "dflt" - else -- if dynamic == 1 then -- replace - language = features.language or "dflt" - script = features.script or "dflt" - end - if script == "auto" then - -- checkedscript and resources are defined later so we cannot shortcut them -- todo: make installer - script = definers.checkedscript(fontidentifiers[font],fontresources[font],features) - end - local ds = dynamics[script] -- can be metatable magic (less testing) --- or dynamics.dflt - if not ds then - ds = { } - dynamics[script] = ds - end - local dsl = ds[language] --- or ds.dflt - if not dsl then - dsl = { } - ds[language] = dsl - end - local dsla = dsl[attribute] - if not dsla then - local tfmdata = fontidentifiers[font] - a_to_script [attribute] = script - a_to_language[attribute] = language - -- we need to save some values .. quite messy - local properties = tfmdata.properties - local shared = tfmdata.shared - local s_script = properties.script - local s_language = properties.language - local s_mode = properties.mode - local s_features = shared.features - properties.mode = "node" - properties.language = language - properties.script = script - properties.dynamics = true -- handy for tracing - shared.features = { } - -- end of save - local set = constructors.checkedfeatures("otf",features) - set.mode = "node" -- really needed - dsla = otf.setfeatures(tfmdata,set) - if trace_dynamics then - report_otf("setting dynamics %s: attribute %a, script %a, language %a, set %a",contextnumbers[attribute],attribute,script,language,set) - end - -- we need to restore some values - properties.script = s_script - properties.language = s_language - properties.mode = s_mode - shared.features = s_features - -- end of restore - dynamics[script][language][attribute] = dsla -- cache - elseif trace_dynamics then - -- report_otf("using dynamics %s: attribute %a, script %a, language %a",contextnumbers[attribute],attribute,script,language) - end - return dsla - end -end - -function otf.scriptandlanguage(tfmdata,attr) - local properties = tfmdata.properties - if attr and attr > 0 then - return a_to_script[attr] or properties.script or "dflt", a_to_language[attr] or properties.language or "dflt" - else - return properties.script or "dflt", properties.language or "dflt" - end -end - --- we reimplement the dataset resolver - -local autofeatures = fonts.analyzers.features -local featuretypes = otf.tables.featuretypes -local defaultscript = otf.features.checkeddefaultscript -local defaultlanguage = otf.features.checkeddefaultlanguage - -local resolved = { } -- we only resolve a font,script,language,attribute pair once -local wildcard = "*" - --- what about analyze in local and not in font - --- needs checking: some added features can pass twice - -local P, C, Cc, lpegmatch = lpeg.P, lpeg.C, lpeg.Cc, lpeg.match - -local pattern = P("always") * (P(-1) * Cc(true) + P(":") * C((1-P(-1))^1)) - -local function initialize(sequence,script,language,s_enabled,a_enabled,font,attr,dynamic,ra,autoscript,autolanguage) - local features = sequence.features - if features then - local order = sequence.order - if order then - local featuretype = featuretypes[sequence.type or "unknown"] - for i=1,#order do -- - local kind = order[i] -- - local e_e - local a_e = a_enabled and a_enabled[kind] -- the value (location) - if a_e ~= nil then - e_e = a_e - else - e_e = s_enabled and s_enabled[kind] -- the value (font) - end - if e_e then - local valid = type(e_e) == "string" and lpegmatch(pattern,e_e) - if valid then - -- we have hit always - local attribute = autofeatures[kind] or false - if trace_applied then - report_process( - "font %s, dynamic %a (%a), feature %a, script %a, language %a, lookup %a, value %a", - font,attr or 0,dynamic,kind,"*","*",sequence.name,valid) - end - ra[#ra+1] = { valid, attribute, sequence, kind } - else - -- we already checked for e_e - local scripts = features[kind] -- - local languages = scripts[script] or scripts[wildcard] - if not languages and autoscript then - langages = defaultscript(featuretype,autoscript,scripts) - end - if languages then - -- we need detailed control over default becase we want to trace - -- only first attribute match check, so we assume simple fina's - -- local valid = false - if languages[language] then - valid = e_e - elseif languages[wildcard] then - valid = e_e - elseif autolanguage and defaultlanguage(featuretype,autolanguage,languages) then - valid = e_e - end - end - if valid then - local attribute = autofeatures[kind] or false - if trace_applied then - report_process( - "font %s, dynamic %a (%a), feature %a, script %a, language %a, lookup %a, value %a", - font,attr or 0,dynamic,kind,script,language,sequence.name,valid) - end - ra[#ra+1] = { valid, attribute, sequence, kind } - end - end - end - end - end - end -end - --- there is some fuzzy language/script state stuff in properties (temporary) - -function otf.dataset(tfmdata,font,attr) -- attr only when explicit (as in special parbuilder) - - local script, language, s_enabled, a_enabled, dynamic - - if attr and attr ~= 0 then - dynamic = contextmerged[attr] or 0 - -- local features = contextsetups[contextnumbers[attr]] -- could be a direct list - local features = contextsetups[attr] - a_enabled = features -- location based - if dynamic == 1 then -- or dynamic == -1 then - -- replace - language = features.language or "dflt" - script = features.script or "dflt" - elseif dynamic == 2 then -- or dynamic == -2 then - -- merge - local properties = tfmdata.properties - s_enabled = tfmdata.shared.features -- font based - language = features.language or properties.language or "dflt" - script = features.script or properties.script or "dflt" - else - -- error - local properties = tfmdata.properties - language = properties.language or "dflt" - script = properties.script or "dflt" - end - else - local properties = tfmdata.properties - language = properties.language or "dflt" - script = properties.script or "dflt" - s_enabled = tfmdata.shared.features -- can be made local to the resolver - dynamic = 0 - end - - local res = resolved[font] - if not res then - res = { } - resolved[font] = res - end - local rs = res[script] - if not rs then - rs = { } - res[script] = rs - end - local rl = rs[language] - if not rl then - rl = { } - rs[language] = rl - end - local ra = rl[attr] - if ra == nil then -- attr can be false - ra = { - -- indexed but we can also add specific data by key in: - } - rl[attr] = ra - local sequences = tfmdata.resources.sequences - if sequences then - local autoscript = (s_enabled and s_enabled.autoscript ) or (a_enabled and a_enabled.autoscript ) - local autolanguage = (s_enabled and s_enabled.autolanguage) or (a_enabled and a_enabled.autolanguage) - for s=1,#sequences do - -- just return nil or ra step - initialize(sequences[s],script,language,s_enabled,a_enabled,font,attr,dynamic,ra,autoscript,autolanguage) - end - end - end - return ra - -end |