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Diffstat (limited to 'tex/context/base/mkxl/font-imp-sanitize.lmt')
| -rw-r--r-- | tex/context/base/mkxl/font-imp-sanitize.lmt | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/tex/context/base/mkxl/font-imp-sanitize.lmt b/tex/context/base/mkxl/font-imp-sanitize.lmt new file mode 100644 index 000000000..84c42e78f --- /dev/null +++ b/tex/context/base/mkxl/font-imp-sanitize.lmt @@ -0,0 +1,197 @@ +if not modules then modules = { } end modules ['font-san'] = { + version = 1.001, + comment = "companion to font-ini.mkiv", + author = "Hans Hagen, PRAGMA ADE & śrīrāma", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- \definefontfeature[demo][sanitizer=demo] +-- \definedfont[Serif*default,demo] test context test +-- \definedfont[Serif*default] test context test + +local keys, insert, copytable = table.keys, table.insert, table.copy +local utfvalues, utfbyte = utf.values, utf.byte + +local sanitizers = { } + +local trace = false +local report = logs.reporter("fonts", "sanitizers") + +trackers.register("fonts.sanitizers", function(v) trace = v end) + +function fonts.registersanitizer(name,vector) + sanitizers[name] = vector +end + +local function split(s) + local t = { } + for value in utfvalues(s) do + t[#t+1] = value + end + return t +end + +local function wrap(t) + for i=1,#t do + t[i] = { t[i] } + end + return t +end + +local function initializesanitizer(tfmdata,value) + local resources = tfmdata.resources + local sanitized = resources.sanitized + if not sanitized then + local sanitizer = false + local goodies = tfmdata.goodies + if goodies then + for i=1,#goodies do + local goodie = goodies[i] + local sanitizers = goodie.sanitizers + sanitizer = sanitizers and sanitizers[value] + if sanitizer then + report("using sanitizer %a from goodie file",value) + break + end + end + end + if not sanitizer then + sanitizer = sanitizers[value] + if sanitizer then + report("using sanitizer %a",value) + end + end + resources.sanitized = true + if sanitizer then + local mapping = sanitizer.mapping + if mapping then + local keys = keys(mapping) + local maps = { } + table.sort(keys, function(a,b) return a > b end) + for i = 1,#keys do + local k = keys[i] + keys[i] = split(k) + maps[i] = split(mapping[k]) + end + for i=1,#maps do + local k = keys[i] + local m = maps[i] + if trace then + -- m = copytable(m) + -- insert(m,1,utfbyte("[")) + -- insert(m, utfbyte("]")) + local t = { utfbyte("[") } + t[#t+1] = 0x200D -- zwnj + for i=1,#m do + t[#t+1] = m[i] + t[#t+1] = 0x200D -- zwnj + end + t[#t+1] = utfbyte("]") + end + maps[i] = { type = "multiple", data = { [k[1]] = m } } + keys[i] = { current = wrap(k) , lookups = { i } } + end + local specification = { + name = "sanitizer", + type = "chainsubstitution", + prepend = 1, + nocheck = true, + default = true, + lookups = maps, + data = { rules = keys }, + } + local s = fonts.handlers.otf.enhancers.addfeature( + tfmdata,"sanitizer",specification, true + ) + insert(resources.sequences,1,s) + end + end + end +end + +-- has to come *after* devanagari because we need to push it in front +-- ... it could be a built-in + +fonts.constructors.features.otf.register { + name = "sanitizer", + description = "inject sanitizer features", + initializers = { + node = initializesanitizer, + }, +} + +local dev2rkrf = { + ["के्र"] = "क्रे", + ["कै्र"] = "क्रै", + ["खे्र"] = "ख्रे", + ["खै्र"] = "ख्रै", + ["गे्र"] = "ग्रे", + ["गै्र"] = "ग्रै", + ["घे्र"] = "घ्रे", + ["घै्र"] = "घ्रै", + -- not required: placed here just to show how bad some fonts are :( + -- ["ङे्र"] = "ङ्रे", + -- ["ङै्र"] = "ङ्रै", + ["चे्र"] = "च्रे", + ["चै्र"] = "च्रै", + ["छे्र"] = "छ्रे", + ["छै्र"] = "छ्रै", + ["जे्र"] = "ज्रे", + ["जै्र"] = "ज्रै", + ["झे्र"] = "झ्रे", + ["झै्र"] = "झ्रै", + ["ञे्र"] = "ञ्रे", + ["ञै्र"] = "ञ्रै", + ["णे्र"] = "ण्रे", + ["णै्र"] = "ण्रै", + ["ते्र"] = "त्रे", + ["तै्र"] = "त्रै", + ["थे्र"] = "थ्रे", + ["थै्र"] = "थ्रै", + ["दे्र"] = "द्रे", + ["दै्र"] = "द्रै", + ["धे्र"] = "ध्रे", + ["धै्र"] = "ध्रै", + ["ने्र"] = "न्रे", + ["नै्र"] = "न्रै", + ["पे्र"] = "प्रे", + ["पै्र"] = "प्रै", + ["फे्र"] = "फ्रे", + ["फै्र"] = "फ्रै", + ["बे्र"] = "ब्रे", + ["बै्र"] = "ब्रै", + ["भे्र"] = "भ्रे", + ["भै्र"] = "भ्रै", + ["मे्र"] = "म्रे", + ["मै्र"] = "म्रै", + ["ये्र"] = "य्रे", + ["यै्र"] = "य्रै", + -- some fonts might need this, some might not: weird + -- for example: Shobhika does not need it but Noto Serif does :( + -- ["ले्र"] = "ल्रे", + -- ["लै्र"] = "ल्रै", + ["वे्र"] = "व्रे", + ["वै्र"] = "व्रै", + ["से्र"] = "स्रे", + ["सै्र"] = "स्रै", + ["शे्र"] = "श्रे", + ["शै्र"] = "श्रै", + ["षे्र"] = "ष्रे", + ["षै्र"] = "ष्रै", + ["हे्र"] = "ह्रे", + ["है्र"] = "ह्रै", + -- some fonts might need this, some might not: weird + -- ["ळे्र"] = "ळ्रे", + -- ["ळै्र"] = "ळ्रै", +} + +local demomapping = { + luatex = "LuaTeX", + metapost = "MetaPost", + context = "ConTeXt", + metafun = "MetaFun", +} + +fonts.registersanitizer("dev2rkrf", { mapping = dev2rkrf }) +fonts.registersanitizer("demo", { mapping = demomapping }) |