diff options
-rw-r--r-- | filegraph.dot | 26 | ||||
-rw-r--r-- | luaotfload-basics-gen.lua | 6 | ||||
-rw-r--r-- | luaotfload-database.lua | 14 | ||||
-rw-r--r-- | luaotfload-font-afm.lua | 971 | ||||
-rw-r--r-- | luaotfload-loaders.lua | 152 | ||||
-rw-r--r-- | luaotfload-merged.lua | 929 | ||||
-rw-r--r-- | luaotfload.dtx | 4 | ||||
-rwxr-xr-x | mkstatus | 1 |
8 files changed, 965 insertions, 1138 deletions
diff --git a/filegraph.dot b/filegraph.dot index f69c751..0837032 100644 --- a/filegraph.dot +++ b/filegraph.dot @@ -63,17 +63,8 @@ strict digraph luaotfload_files { //looks weird with circo ... luaotfload_libs -> font_names [label="luaotfload-database.lua"] luaotfload_libs -> typo_krn [label="luaotfload-extralibs.lua"] - luaotfload_libs -> font_afm [label="luaotfload-loaders.lua"] luaotfload_libs -> font_afk [label="luaotfload-loaders.lua"] - subgraph cluster_afm { rank = same; - label = "AFM support"; - node [style=filled, color=white]; - style = "filled,rounded"; - color = "grey90:white"; - font_afm; - font_afk; } - mkstatus -> status [label="generates from distribution files", style=dashed] @@ -166,14 +157,6 @@ strict digraph luaotfload_files { //looks weird with circo ... style = "filled,rounded", penwidth=2] - font_afm [label = "luaotfload-font-afm.lua", - shape = rect, - width = "3.2cm", - height = "1.2cm", - color = "#01012222", - style = "filled,rounded", - penwidth=2] - typo_krn [label = "luaotfload-typo-krn.lua", shape = rect, width = "3.2cm", @@ -289,10 +272,11 @@ strict digraph luaotfload_files { //looks weird with circo ... <table border="0"> <th> <td colspan="2"> <font point-size="12" face="Iwona Italic">Font Loader (LuaTeX-Fonts)</font> </td> </th> <tr> <td>luatex-basics-gen.lua</td> <td>luatex-basics-nod.lua</td> </tr> - <tr> <td>luatex-fonts-enc.lua</td> <td>luatex-fonts-syn.lua</td> </tr> - <tr> <td>luatex-fonts-tfm.lua</td> <td>luatex-fonts-chr.lua</td> </tr> - <tr> <td>luatex-fonts-lua.lua</td> <td>luatex-fonts-def.lua</td> </tr> - <tr> <td>luatex-fonts-ext.lua</td> <td>luatex-fonts-cbk.lua</td> </tr> + <tr> <td>luatex-fonts-enc.lua</td> <td>luatex-fonts-syn.lua</td> </tr> + <tr> <td>luatex-font-tfm.lua</td> <td>luatex-font-afm.lua</td> </tr> + <tr> <td>luatex-fonts-tfm.lua</td> <td>luatex-fonts-chr.lua</td> </tr> + <tr> <td>luatex-fonts-lua.lua</td> <td>luatex-fonts-def.lua</td> </tr> + <tr> <td>luatex-fonts-ext.lua</td> <td>luatex-fonts-cbk.lua</td> </tr> </table> >, ] diff --git a/luaotfload-basics-gen.lua b/luaotfload-basics-gen.lua index 26c1edc..9cf5b93 100644 --- a/luaotfload-basics-gen.lua +++ b/luaotfload-basics-gen.lua @@ -89,6 +89,7 @@ local remapper = { fea = "font feature files", pfa = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this! pfb = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this! + afm = "afm", } function resolvers.findfile(name,fileformat) @@ -117,6 +118,11 @@ end resolvers.findbinfile = resolvers.findfile +function resolvers.loadbinfile(filename,filetype) + local data = io.loaddata(filename) + return true, data, #data +end + function resolvers.resolve(s) return s end diff --git a/luaotfload-database.lua b/luaotfload-database.lua index d8c934d..2dbc20c 100644 --- a/luaotfload-database.lua +++ b/luaotfload-database.lua @@ -810,8 +810,7 @@ resolve = function (_, _, specification) -- the 1st two parameters are used by C --- but it’s not a table, e.g. it contains an integer. if not fonts_reloaded then return reload_db("invalid database; not a table", - resolve, nil, nil, specification - ) + resolve, nil, nil, specification) end --- unsucessfully reloaded; bail return specification.name, false, false @@ -1004,12 +1003,21 @@ end --- string -> ('a -> 'a) -> 'a list -> 'a reload_db = function (why, caller, ...) - report ("both", 1, "db", "Reload initiated; reason: %q", why) + local namedata = names.data + local formats = tableconcat (namedata.formats, ",") + + report ("both", 1, "db", + "Reload initiated (formats: %s); reason: %q", + formats, why) + + set_font_filter (formats) names.data = update_names (names.data, false, false) + if names.data then fonts_reloaded = true return caller (...) end + report ("both", 0, "db", "Database update unsuccessful.") end diff --git a/luaotfload-font-afm.lua b/luaotfload-font-afm.lua deleted file mode 100644 index cb0c243..0000000 --- a/luaotfload-font-afm.lua +++ /dev/null @@ -1,971 +0,0 @@ -if not modules then modules = { } end modules ['font-afm'] = { - 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" -} - ---[[ldx-- -<p>Some code may look a bit obscure but this has to do with the -fact that we also use this code for testing and much code evolved -in the transition from <l n='tfm'/> to <l n='afm'/> to <l -n='otf'/>.</p> - -<p>The following code still has traces of intermediate font support -where we handles font encodings. Eventually font encoding goes -away.</p> ---ldx]]-- - -local fonts, logs, trackers, containers, resolvers = fonts, logs, trackers, containers, resolvers - -local next, type, tonumber = next, type, tonumber -local format, match, gmatch, lower, gsub, strip = string.format, string.match, string.gmatch, string.lower, string.gsub, string.strip -local abs = math.abs -local P, S, C, R, lpegmatch, patterns = lpeg.P, lpeg.S, lpeg.C, lpeg.R, lpeg.match, lpeg.patterns -local derivetable = table.derive - -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 findbinfile = resolvers.findbinfile - -local definers = fonts.definers -local readers = fonts.readers -local constructors = fonts.constructors - -local afm = constructors.newhandler("afm") -local pfb = constructors.newhandler("pfb") - -local afmfeatures = constructors.newfeatures("afm") -local registerafmfeature = afmfeatures.register - -afm.version = 1.410 -- 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.*) - -afm.helpdata = { } -- set later on so no local for this -afm.syncspace = true -- when true, nicer stretch values -afm.addligatures = true -- best leave this set to true -afm.addtexligatures = true -- best leave this set to true -afm.addkerns = true -- best leave this set to true - -local function setmode(tfmdata,value) - if value then - tfmdata.properties.mode = lower(value) - end -end - -registerafmfeature { - name = "mode", - description = "mode", - initializers = { - base = setmode, - node = setmode, - } -} - ---[[ldx-- -<p>We start with the basic reader which we give a name similar to the -built in <l n='tfm'/> and <l n='otf'/> reader.</p> ---ldx]]-- - ---~ Comment FONTIDENTIFIER LMMATHSYMBOLS10 ---~ Comment CODINGSCHEME TEX MATH SYMBOLS ---~ Comment DESIGNSIZE 10.0 pt ---~ Comment CHECKSUM O 4261307036 ---~ Comment SPACE 0 plus 0 minus 0 ---~ Comment QUAD 1000 ---~ Comment EXTRASPACE 0 ---~ Comment NUM 676.508 393.732 443.731 ---~ Comment DENOM 685.951 344.841 ---~ Comment SUP 412.892 362.892 288.889 ---~ Comment SUB 150 247.217 ---~ Comment SUPDROP 386.108 ---~ Comment SUBDROP 50 ---~ Comment DELIM 2390 1010 ---~ Comment AXISHEIGHT 250 - -local comment = P("Comment") -local spacing = patterns.spacer -- S(" \t")^1 -local lineend = patterns.newline -- S("\n\r") -local words = C((1 - lineend)^1) -local number = C((R("09") + S("."))^1) / tonumber * spacing^0 -local data = lpeg.Carg(1) - -local pattern = ( -- needs testing ... not used anyway as we no longer need math afm's - comment * spacing * - ( - data * ( - ("CODINGSCHEME" * spacing * words ) / function(fd,a) end + - ("DESIGNSIZE" * spacing * number * words ) / function(fd,a) fd[ 1] = a end + - ("CHECKSUM" * spacing * number * words ) / function(fd,a) fd[ 2] = a end + - ("SPACE" * spacing * number * "plus" * number * "minus" * number) / function(fd,a,b,c) fd[ 3], fd[ 4], fd[ 5] = a, b, c end + - ("QUAD" * spacing * number ) / function(fd,a) fd[ 6] = a end + - ("EXTRASPACE" * spacing * number ) / function(fd,a) fd[ 7] = a end + - ("NUM" * spacing * number * number * number ) / function(fd,a,b,c) fd[ 8], fd[ 9], fd[10] = a, b, c end + - ("DENOM" * spacing * number * number ) / function(fd,a,b ) fd[11], fd[12] = a, b end + - ("SUP" * spacing * number * number * number ) / function(fd,a,b,c) fd[13], fd[14], fd[15] = a, b, c end + - ("SUB" * spacing * number * number ) / function(fd,a,b) fd[16], fd[17] = a, b end + - ("SUPDROP" * spacing * number ) / function(fd,a) fd[18] = a end + - ("SUBDROP" * spacing * number ) / function(fd,a) fd[19] = a end + - ("DELIM" * spacing * number * number ) / function(fd,a,b) fd[20], fd[21] = a, b end + - ("AXISHEIGHT" * spacing * number ) / function(fd,a) fd[22] = a end - ) - + (1-lineend)^0 - ) - + (1-comment)^1 -)^0 - -local function scan_comment(str) - local fd = { } - lpegmatch(pattern,str,1,fd) - return fd -end - --- On a rainy day I will rewrite this in lpeg ... or we can use the (slower) fontloader --- as in now supports afm/pfb loading but it's not too bad to have different methods --- for testing approaches. - -local keys = { } - -function keys.FontName (data,line) data.metadata.fontname = strip (line) -- get rid of spaces - data.metadata.fullname = strip (line) end -function keys.ItalicAngle (data,line) data.metadata.italicangle = tonumber (line) end -function keys.IsFixedPitch(data,line) data.metadata.isfixedpitch = toboolean(line,true) end -function keys.CharWidth (data,line) data.metadata.charwidth = tonumber (line) end -function keys.XHeight (data,line) data.metadata.xheight = tonumber (line) end -function keys.Descender (data,line) data.metadata.descender = tonumber (line) end -function keys.Ascender (data,line) data.metadata.ascender = tonumber (line) end -function keys.Comment (data,line) - -- Comment DesignSize 12 (pts) - -- Comment TFM designsize: 12 (in points) - line = lower(line) - local designsize = match(line,"designsize[^%d]*(%d+)") - if designsize then data.metadata.designsize = tonumber(designsize) end -end - -local function get_charmetrics(data,charmetrics,vector) - local characters = data.characters - local chr, ind = { }, 0 - for k,v in gmatch(charmetrics,"([%a]+) +(.-) *;") do - if k == 'C' then - v = tonumber(v) - if v < 0 then - ind = ind + 1 -- ? - else - ind = v - end - chr = { - index = ind - } - elseif k == 'WX' then - chr.width = tonumber(v) - elseif k == 'N' then - characters[v] = chr - elseif k == 'B' then - local llx, lly, urx, ury = match(v,"^ *(.-) +(.-) +(.-) +(.-)$") - chr.boundingbox = { tonumber(llx), tonumber(lly), tonumber(urx), tonumber(ury) } - elseif k == 'L' then - local plus, becomes = match(v,"^(.-) +(.-)$") - local ligatures = chr.ligatures - if ligatures then - ligatures[plus] = becomes - else - chr.ligatures = { [plus] = becomes } - end - end - end -end - -local function get_kernpairs(data,kernpairs) - local characters = data.characters - for one, two, value in gmatch(kernpairs,"KPX +(.-) +(.-) +(.-)\n") do - local chr = characters[one] - if chr then - local kerns = chr.kerns - if kerns then - kerns[two] = tonumber(value) - else - chr.kerns = { [two] = tonumber(value) } - end - end - end -end - -local function get_variables(data,fontmetrics) - for key, rest in gmatch(fontmetrics,"(%a+) *(.-)[\n\r]") do - local keyhandler = keys[key] - if keyhandler then - keyhandler(data,rest) - end - end -end - -local function get_indexes(data,pfbname) - data.resources.filename = resolvers.unresolve(pfbname) -- no shortcut - local pfbblob = fontloader.open(pfbname) - if pfbblob then - local characters = data.characters - local pfbdata = fontloader.to_table(pfbblob) - if pfbdata then - local glyphs = pfbdata.glyphs - if glyphs then - if trace_loading then - report_afm("getting index data from %a",pfbname) - end - for index, glyph in next, glyphs do - local name = glyph.name - if name then - local char = characters[name] - if char then - if trace_indexing then - report_afm("glyph %a has index %a",name,index) - end - char.index = index - end - end - end - elseif trace_loading then - report_afm("no glyph data in pfb file %a",pfbname) - end - elseif trace_loading then - report_afm("no data in pfb file %a",pfbname) - end - fontloader.close(pfbblob) - elseif trace_loading then - report_afm("invalid pfb file %a",pfbname) - end -end - -local function readafm(filename) - local ok, afmblob, size = resolvers.loadbinfile(filename) -- has logging - if ok and afmblob then - local data = { - resources = { - filename = resolvers.unresolve(filename), - version = afm.version, - creator = "context mkiv", - }, - properties = { - hasitalics = false, - }, - goodies = { - }, - metadata = { - filename = file.removesuffix(file.basename(filename)) - }, - characters = { - -- a temporary store - }, - descriptions = { - -- the final store - }, - } - afmblob = gsub(afmblob,"StartCharMetrics(.-)EndCharMetrics", function(charmetrics) - if trace_loading then - report_afm("loading char metrics") - end - get_charmetrics(data,charmetrics,vector) - return "" - end) - afmblob = gsub(afmblob,"StartKernPairs(.-)EndKernPairs", function(kernpairs) - if trace_loading then - report_afm("loading kern pairs") - end - get_kernpairs(data,kernpairs) - return "" - end) - afmblob = gsub(afmblob,"StartFontMetrics%s+([%d%.]+)(.-)EndFontMetrics", function(version,fontmetrics) - if trace_loading then - report_afm("loading variables") - end - data.afmversion = version - get_variables(data,fontmetrics) - data.fontdimens = scan_comment(fontmetrics) -- todo: all lpeg, no time now - return "" - end) - return data - else - if trace_loading then - report_afm("no valid afm file %a",filename) - end - return nil - end -end - ---[[ldx-- -<p>We cache files. Caching is taken care of in the loader. We cheat a bit -by adding ligatures and kern information to the afm derived data. That -way we can set them faster when defining a font.</p> ---ldx]]-- - -local addkerns, addligatures, addtexligatures, unify, normalize -- we will implement these later - -function afm.load(filename) - -- hm, for some reasons not resolved yet - filename = resolvers.findfile(filename,'afm') or "" - if filename ~= "" then - local name = file.removesuffix(file.basename(filename)) - local data = containers.read(afm.cache,name) - local attr = lfs.attributes(filename) - local size, time = attr.size or 0, attr.modification or 0 - -- - local pfbfile = file.replacesuffix(name,"pfb") - local pfbname = resolvers.findfile(pfbfile,"pfb") or "" - if pfbname == "" then - pfbname = resolvers.findfile(file.basename(pfbfile),"pfb") or "" - end - local pfbsize, pfbtime = 0, 0 - if pfbname ~= "" then - local attr = lfs.attributes(pfbname) - pfbsize = attr.size or 0 - pfbtime = attr.modification or 0 - end - if not data or data.size ~= size or data.time ~= time or data.pfbsize ~= pfbsize or data.pfbtime ~= pfbtime then - report_afm("reading %a",filename) - data = readafm(filename) - if data then - if pfbname ~= "" then - get_indexes(data,pfbname) - elseif trace_loading then - report_afm("no pfb file for %a",filename) - end - report_afm("unifying %a",filename) - unify(data,filename) - if afm.addligatures then - report_afm("add ligatures") - addligatures(data) - end - if afm.addtexligatures then - report_afm("add tex ligatures") - addtexligatures(data) - end - if afm.addkerns then - report_afm("add extra kerns") - addkerns(data) - end - normalize(data) - report_afm("add tounicode data") - fonts.mappings.addtounicode(data,filename) - data.size = size - data.time = time - data.pfbsize = pfbsize - data.pfbtime = pfbtime - report_afm("saving %a in cache",name) - data = containers.write(afm.cache, name, data) - data = containers.read(afm.cache,name) - end - end - return data - else - return nil - end -end - -local uparser = fonts.mappings.makenameparser() - -unify = function(data, filename) - local unicodevector = fonts.encodings.agl.unicodes -- loaded runtime in context - local unicodes, names = { }, { } - local private = constructors.privateoffset - local descriptions = data.descriptions - for name, blob in next, data.characters do - local code = unicodevector[name] -- or characters.name_to_unicode[name] - if not code then - code = lpegmatch(uparser,name) - if not code then - code = private - private = private + 1 - report_afm("assigning private slot %U for unknown glyph name %a",code,name) - end - end - local index = blob.index - unicodes[name] = code - names[name] = index - blob.name = name - descriptions[code] = { - boundingbox = blob.boundingbox, - width = blob.width, - kerns = blob.kerns, - index = index, - name = name, - } - end - for unicode, description in next, descriptions do - local kerns = description.kerns - if kerns then - local krn = { } - for name, kern in next, kerns do - local unicode = unicodes[name] - if unicode then - krn[unicode] = kern - else - print(unicode,name) - end - end - description.kerns = krn - end - end - data.characters = nil - local resources = data.resources - local filename = resources.filename or file.removesuffix(file.basename(filename)) - resources.filename = resolvers.unresolve(filename) -- no shortcut - resources.unicodes = unicodes -- name to unicode - resources.marks = { } -- todo - resources.names = names -- name to index - resources.private = private -end - -normalize = function(data) -end - ---[[ldx-- -<p>These helpers extend the basic table with extra ligatures, texligatures -and extra kerns. This saves quite some lookups later.</p> ---ldx]]-- - -local addthem = function(rawdata,ligatures) - if ligatures then - local descriptions = rawdata.descriptions - local resources = rawdata.resources - local unicodes = resources.unicodes - local names = resources.names - for ligname, ligdata in next, ligatures do - local one = descriptions[unicodes[ligname]] - if one then - for _, pair in next, ligdata do - local two, three = unicodes[pair[1]], unicodes[pair[2]] - if two and three then - local ol = one.ligatures - if ol then - if not ol[two] then - ol[two] = three - end - else - one.ligatures = { [two] = three } - end - end - end - end - end - end -end - -addligatures = function(rawdata) addthem(rawdata,afm.helpdata.ligatures ) end -addtexligatures = 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> ---ldx]]-- - --- This is rather old code (from the beginning when we had only tfm). If --- we unify the afm data (now we have names all over the place) then --- we can use shcodes but there will be many more looping then. But we --- could get rid of the tables in char-cmp then. Als, in the generic version --- we don't use the character database. (Ok, we can have a context specific --- variant). - -addkerns = function(rawdata) -- using shcodes is not robust here - local descriptions = rawdata.descriptions - local resources = rawdata.resources - local unicodes = resources.unicodes - local function do_it_left(what) - if what then - for unicode, description in next, descriptions do - local kerns = description.kerns - if kerns then - local extrakerns - for complex, simple in next, what do - complex = unicodes[complex] - simple = unicodes[simple] - if complex and simple then - local ks = kerns[simple] - if ks and not kerns[complex] then - if extrakerns then - extrakerns[complex] = ks - else - extrakerns = { [complex] = ks } - end - end - end - end - if extrakerns then - description.extrakerns = extrakerns - end - end - end - end - end - local function do_it_copy(what) - if what then - for complex, simple in next, what do - complex = unicodes[complex] - simple = unicodes[simple] - if complex and simple then - local complexdescription = descriptions[complex] - if complexdescription then -- optional - local simpledescription = descriptions[complex] - if simpledescription then - local extrakerns - local kerns = simpledescription.kerns - if kerns then - for unicode, kern in next, kerns do - if extrakerns then - extrakerns[unicode] = kern - else - extrakerns = { [unicode] = kern } - end - end - end - local extrakerns = simpledescription.extrakerns - if extrakerns then - for unicode, kern in next, extrakerns do - if extrakerns then - extrakerns[unicode] = kern - else - extrakerns = { [unicode] = kern } - end - end - end - if extrakerns then - complexdescription.extrakerns = extrakerns - end - end - end - end - end - end - end - -- add complex with values of simplified when present - do_it_left(afm.helpdata.leftkerned) - do_it_left(afm.helpdata.bothkerned) - -- copy kerns from simple char to complex char unless set - do_it_copy(afm.helpdata.bothkerned) - do_it_copy(afm.helpdata.rightkerned) -end - ---[[ldx-- -<p>The copying routine looks messy (and is indeed a bit messy).</p> ---ldx]]-- - -local function adddimensions(data) -- we need to normalize afm to otf i.e. indexed table instead of name - if data then - for unicode, description in next, data.descriptions do - local bb = description.boundingbox - if bb then - local ht, dp = bb[4], -bb[2] - if ht == 0 or ht < 0 then - -- no need to set it and no negative heights, nil == 0 - else - description.height = ht - end - if dp == 0 or dp < 0 then - -- no negative depths and no negative depths, nil == 0 - else - description.depth = dp - end - end - end - end -end - -local function copytotfm(data) - if data and data.descriptions then - local metadata = data.metadata - local resources = data.resources - local properties = derivetable(data.properties) - local descriptions = derivetable(data.descriptions) - local goodies = derivetable(data.goodies) - local characters = { } - local parameters = { } - local unicodes = resources.unicodes - -- - for unicode, description in next, data.descriptions do -- use parent table - characters[unicode] = { } - end - -- - local filename = constructors.checkedfilename(resources) - local fontname = metadata.fontname or metadata.fullname - local fullname = metadata.fullname or metadata.fontname - local endash = unicodes['space'] - local emdash = unicodes['emdash'] - local spacer = "space" - local spaceunits = 500 - -- - local monospaced = metadata.isfixedpitch - local charwidth = metadata.charwidth - local italicangle = metadata.italicangle - local charxheight = metadata.xheight and metadata.xheight > 0 and metadata.xheight - properties.monospaced = monospaced - parameters.italicangle = italicangle - parameters.charwidth = charwidth - parameters.charxheight = charxheight - -- same as otf - if properties.monospaced then - if descriptions[endash] then - spaceunits, spacer = descriptions[endash].width, "space" - end - if not spaceunits and descriptions[emdash] then - spaceunits, spacer = descriptions[emdash].width, "emdash" - end - if not spaceunits and charwidth then - spaceunits, spacer = charwidth, "charwidth" - end - else - if descriptions[endash] then - spaceunits, spacer = descriptions[endash].width, "space" - end - if not spaceunits and charwidth then - spaceunits, spacer = charwidth, "charwidth" - end - end - spaceunits = tonumber(spaceunits) - if spaceunits < 200 then - -- todo: warning - end - -- - parameters.slant = 0 - parameters.space = spaceunits - parameters.space_stretch = 500 - parameters.space_shrink = 333 - parameters.x_height = 400 - parameters.quad = 1000 - -- - if italicangle then - parameters.italicangle = italicangle - parameters.italicfactor = math.cos(math.rad(90+italicangle)) - parameters.slant = - math.round(math.tan(italicangle*math.pi/180)) - end - if monospaced then - parameters.space_stretch = 0 - parameters.space_shrink = 0 - elseif afm.syncspace then - parameters.space_stretch = spaceunits/2 - parameters.space_shrink = spaceunits/3 - end - parameters.extra_space = parameters.space_shrink - if charxheight then - parameters.x_height = charxheight - else - -- same as otf - local x = unicodes['x'] - if x then - local x = descriptions[x] - if x then - parameters.x_height = x.height - end - end - -- - end - local fd = data.fontdimens - if fd and fd[8] and fd[9] and fd[10] then -- math - for k,v in next, fd do - parameters[k] = v - end - end - -- - parameters.designsize = (metadata.designsize or 10)*65536 - parameters.ascender = abs(metadata.ascender or 0) - parameters.descender = abs(metadata.descender or 0) - parameters.units = 1000 - -- - properties.spacer = spacer - properties.encodingbytes = 2 - properties.format = fonts.formats[filename] or "type1" - properties.filename = filename - properties.fontname = fontname - properties.fullname = fullname - properties.psname = fullname - properties.name = filename or fullname or fontname - -- - if next(characters) then - return { - characters = characters, - descriptions = descriptions, - parameters = parameters, - resources = resources, - properties = properties, - goodies = goodies, - } - end - end - return nil -end - ---[[ldx-- -<p>Originally we had features kind of hard coded for <l n='afm'/> -files but since I expect to support more font formats, I decided -to treat this fontformat like any other and handle features in a -more configurable way.</p> ---ldx]]-- - -function afm.setfeatures(tfmdata,features) - local okay = constructors.initializefeatures("afm",tfmdata,features,trace_features,report_afm) - if okay then - return constructors.collectprocessors("afm",tfmdata,features,trace_features,report_afm) - else - return { } -- will become false - end -end - -local function checkfeatures(specification) -end - -local function afmtotfm(specification) - local afmname = specification.filename or specification.name - if specification.forced == "afm" or specification.format == "afm" then -- move this one up - if trace_loading then - report_afm("forcing afm format for %a",afmname) - end - else - local tfmname = findbinfile(afmname,"ofm") or "" - if tfmname ~= "" then - if trace_loading then - report_afm("fallback from afm to tfm for %a",afmname) - end - return -- just that - end - end - if afmname ~= "" then - -- weird, isn't this already done then? - local features = constructors.checkedfeatures("afm",specification.features.normal) - specification.features.normal = features - constructors.hashinstance(specification,true) -- also weird here - -- - specification = definers.resolve(specification) -- new, was forgotten - local cache_id = specification.hash - local tfmdata = containers.read(constructors.cache, cache_id) -- cache with features applied - if not tfmdata then - local rawdata = afm.load(afmname) - if rawdata and next(rawdata) then - adddimensions(rawdata) - tfmdata = copytotfm(rawdata) - if tfmdata and next(tfmdata) then - local shared = tfmdata.shared - if not shared then - shared = { } - tfmdata.shared = shared - end - shared.rawdata = rawdata - shared.features = features - shared.processes = afm.setfeatures(tfmdata,features) - end - elseif trace_loading then - report_afm("no (valid) afm file found with name %a",afmname) - end - tfmdata = containers.write(constructors.cache,cache_id,tfmdata) - end - return tfmdata - end -end - ---[[ldx-- -<p>As soon as we could intercept the <l n='tfm'/> reader, I implemented an -<l n='afm'/> reader. Since traditional <l n='pdftex'/> could use <l n='opentype'/> -fonts with <l n='afm'/> companions, the following method also could handle -those cases, but now that we can handle <l n='opentype'/> directly we no longer -need this features.</p> ---ldx]]-- - -local function read_from_afm(specification) - local tfmdata = afmtotfm(specification) - if tfmdata then - tfmdata.properties.name = specification.name - tfmdata = constructors.scale(tfmdata, specification) - local allfeatures = tfmdata.shared.features or specification.features.normal - constructors.applymanipulators("afm",tfmdata,allfeatures,trace_features,report_afm) - fonts.loggers.register(tfmdata,'afm',specification) - end - return tfmdata -end - ---[[ldx-- -<p>Here comes the implementation of a few features. We only implement -those that make sense for this format.</p> ---ldx]]-- - -local function prepareligatures(tfmdata,ligatures,value) - if value then - local descriptions = tfmdata.descriptions - for unicode, character in next, tfmdata.characters do - local description = descriptions[unicode] - local dligatures = description.ligatures - if dligatures then - local cligatures = character.ligatures - if not cligatures then - cligatures = { } - character.ligatures = cligatures - end - for unicode, ligature in next, dligatures do - cligatures[unicode] = { - char = ligature, - type = 0 - } - end - end - end - end -end - -local function preparekerns(tfmdata,kerns,value) - if value then - local rawdata = tfmdata.shared.rawdata - local resources = rawdata.resources - local unicodes = resources.unicodes - local descriptions = tfmdata.descriptions - for u, chr in next, tfmdata.characters do - local d = descriptions[u] - local newkerns = d[kerns] - if newkerns then - local kerns = chr.kerns - if not kerns then - kerns = { } - chr.kerns = kerns - end - for k,v in next, newkerns do - local uk = unicodes[k] - if uk then - kerns[uk] = v - end - end - end - end - end -end - -local list = { - -- [0x0022] = 0x201D, - [0x0027] = 0x2019, - -- [0x0060] = 0x2018, -} - -local function texreplacements(tfmdata,value) - local descriptions = tfmdata.descriptions - local characters = tfmdata.characters - for k, v in next, list do - characters [k] = characters [v] -- we forget about kerns - descriptions[k] = descriptions[v] -- we forget about kerns - end -end - -local function ligatures (tfmdata,value) prepareligatures(tfmdata,'ligatures', value) end -local function texligatures(tfmdata,value) prepareligatures(tfmdata,'texligatures',value) end -local function kerns (tfmdata,value) preparekerns (tfmdata,'kerns', value) end -local function extrakerns (tfmdata,value) preparekerns (tfmdata,'extrakerns', value) end - -registerafmfeature { - name = "liga", - description = "traditional ligatures", - initializers = { - base = ligatures, - node = ligatures, - } -} - -registerafmfeature { - name = "kern", - description = "intercharacter kerning", - initializers = { - base = kerns, - node = kerns, - } -} - -registerafmfeature { - name = "extrakerns", - description = "additional intercharacter kerning", - initializers = { - base = extrakerns, - node = extrakerns, - } -} - -registerafmfeature { - name = 'tlig', - description = 'tex ligatures', - initializers = { - base = texligatures, - node = texligatures, - } -} - -registerafmfeature { - name = 'trep', - description = 'tex replacements', - initializers = { - base = texreplacements, - node = texreplacements, - } -} - --- readers - -local check_tfm = readers.check_tfm - -fonts.formats.afm = "type1" -fonts.formats.pfb = "type1" - -local function check_afm(specification,fullname) - local foundname = findbinfile(fullname, 'afm') or "" -- just to be sure - if foundname == "" then - foundname = fonts.names.getfilename(fullname,"afm") or "" - end - if foundname == "" and afm.autoprefixed then - local encoding, shortname = match(fullname,"^(.-)%-(.*)$") -- context: encoding-name.* - if encoding and shortname and fonts.encodings.known[encoding] then - shortname = findbinfile(shortname,'afm') or "" -- just to be sure - if shortname ~= "" then - foundname = shortname - if trace_defining then - report_afm("stripping encoding prefix from filename %a",afmname) - end - end - end - end - if foundname ~= "" then - specification.filename = foundname - specification.format = "afm" - return read_from_afm(specification) - end -end - -function readers.afm(specification,method) - local fullname, tfmdata = specification.filename or "", nil - if fullname == "" then - local forced = specification.forced or "" - if forced ~= "" then - tfmdata = check_afm(specification,specification.name .. "." .. forced) - end - if not tfmdata then - method = method or definers.method or "afm or tfm" - if method == "tfm" then - tfmdata = check_tfm(specification,specification.name) - elseif method == "afm" then - tfmdata = check_afm(specification,specification.name) - elseif method == "tfm or afm" then - tfmdata = check_tfm(specification,specification.name) or check_afm(specification,specification.name) - else -- method == "afm or tfm" or method == "" then - tfmdata = check_afm(specification,specification.name) or check_tfm(specification,specification.name) - end - end - else - tfmdata = check_afm(specification,fullname) - end - return tfmdata -end - -function readers.pfb(specification,method) -- only called when forced - local original = specification.specification - if trace_defining then - report_afm("using afm reader for %a",original) - end - specification.specification = gsub(original,"%.pfb",".afm") - specification.forced = "afm" - return readers.afm(specification,method) -end diff --git a/luaotfload-loaders.lua b/luaotfload-loaders.lua index 6d6f409..20eb277 100644 --- a/luaotfload-loaders.lua +++ b/luaotfload-loaders.lua @@ -11,158 +11,32 @@ local readers = fonts.readers local handlers = fonts.handlers local formats = fonts.formats -local lfsisfile = lfs.isfile -local fileaddsuffix = file.addsuffix -local filebasename = file.basename -local stringsub = string.sub -local stringlower = string.lower -local stringupper = string.upper -local findbinfile = resolvers.findbinfile - -local lpeg = require "lpeg" -local lpegmatch = lpeg.match -local P, S, Cp = lpeg.P, lpeg.S, lpeg.Cp - -resolvers.openbinfile = function (filename) - if filename and filename ~= "" then - local f = io.open(filename,"rb") - if f then - --logs.show_load(filename) - local s = f:read("*a") -- io.readall(f) is faster but we never have large files here - if checkgarbage then - checkgarbage(#s) - end - f:close() - if s then - return true, s, #s - end - end - end - return loaders.notfound() -end - -resolvers.loadbinfile = function (filename, filetype) - - local fname = kpse.find_file (filename, filetype) - - if fname and fname ~= "" then - return resolvers.openbinfile(fname) - else - return resolvers.loaders.notfound() - end - -end - ---- this function is required because AFM precedes TFM in the reader ---- chain (see definers.loadfont() in font-def.lua - -local check_tfm = function (specification, fullname) - - local foundname = findbinfile (fullname, "tfm") or "" - - if foundname == "" then - foundname = findbinfile (fullname, "ofm") or "" - end - - if foundname == "" then - foundname = fonts.names.getfilename (fullname,"tfm") or "" - end - - if foundname ~= "" then - specification.filename = foundname - specification.format = "ofm" - return font.read_tfm (specification.filename, - specification.size) - end -end - -readers.check_tfm = check_tfm - ---[[ <EXPERIMENTAL> ]] - --[[doc-- - Here we load extra AFM libraries from Context. - In fact, part of the AFM support is contained in font-ext.lua, for - which the font loader has a replacement: luatex-fonts-ext.lua. - However, this is only a stripped down version with everything AFM - removed. For example, it lacks definitions of several AFM features - like italic correction, protrusion, expansion and so on. In order to - achieve full-fledged AFM support we will either have to implement our - own version of these or consult with Hans whether he would consider - including the AFM code with the font loader. + As of 2013-08-25 AFM support has been included in the fontloader + package. - For the time being we stick with two AFM-specific libraries: - font-afm.lua and font-afk.lua. When combined, these already supply us - with basic features like kerning and ligatures. The rest can be added - in due time. + We still have to load the font feature definitions (font-afk.lua) to + achieve kerning and ligatures. --doc]]-- -require "luaotfload-font-afm.lua" require "luaotfload-font-afk.lua" ---[[ </EXPERIMENTAL> ]] - ---[[doc-- - - The PFB/PFA reader checks whether there is a corresponding AFM file - and hands the spec over to the AFM loader if appropriate. Context - uses string.gsub() to accomplish this but that can cause collateral - damage. - ---doc]]-- - -local mk_type1_reader = function (format) - - format = stringlower (format) - local first = stringsub (format, 1, 1) - local second = stringsub (format, 2, 2) - local third = stringsub (format, 3, 3) - - local p_format = P"." - * (P(first) + P(stringupper (first))) - * (P(second) + P(stringupper (second))) - * (P(third) + P(stringupper (third))) - --- we have to be careful here so we don’t affect - --- harmless substrings - * (P"(" --- subfont - + P":" --- feature list - + P(-1)) --- end of string - local no_format = 1 - p_format - local p_format_file = no_format^1 * Cp() * p_format * Cp() - - local reader = function (specification, method) - - local afmfile = fileaddsuffix (specification.name, "afm") - - if lfsisfile (afmfile) then - --- switch to afm reader - logs.names_report ("log", 0, "type1", - "Found corresponding AFM file %s, using that.", - filebasename (afmfile)) - local oldspec = specification.specification - local before, after = lpegmatch (p_format_file, oldspec) - specification.specification = stringsub (oldspec, 1, before) - .. "afm" - .. stringsub (oldspec, after - 1) - specification.forced = "afm" - return readers.afm (specification, method) - end - - --- else read pfb via opentype mechanism - return readers.opentype (specification, format, "type1") - end - - return reader +local pfb_reader = function (specification) + return readers.opentype (specification, "pfb", "type1") +end + +local pfa_reader = function (specification) + return readers.opentype (specification, "pfa", "type1") end formats.pfa = "type1" -readers.pfa = mk_type1_reader "pfa" +readers.pfa = pfa_reader handlers.pfa = { } formats.pfb = "type1" -readers.pfb = mk_type1_reader "pfb" -handlers.pfb = { } --- empty, as with tfm +readers.pfb = pfb_reader +handlers.pfb = { } -- vim:tw=71:sw=2:ts=2:expandtab diff --git a/luaotfload-merged.lua b/luaotfload-merged.lua index 0a19be1..b39d4a8 100644 --- a/luaotfload-merged.lua +++ b/luaotfload-merged.lua @@ -1,6 +1,6 @@ -- merged file : luatex-fonts-merged.lua -- parent file : luatex-fonts.lua --- merge date : 08/24/13 12:19:21 +-- merge date : 08/24/13 13:59:18 do -- begin closure to overcome local limits and interference @@ -3060,6 +3060,7 @@ local remapper={ fea="font feature files", pfa="type1 fonts", pfb="type1 fonts", + afm="afm", } function resolvers.findfile(name,fileformat) name=string.gsub(name,"\\","/") @@ -3078,6 +3079,10 @@ function resolvers.findfile(name,fileformat) return found end resolvers.findbinfile=resolvers.findfile +function resolvers.loadbinfile(filename,filetype) + local data=io.loaddata(filename) + return true,data,#data +end function resolvers.resolve(s) return s end @@ -5065,6 +5070,928 @@ end -- closure do -- begin closure to overcome local limits and interference +if not modules then modules={} end modules ['font-tfm']={ + 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 next=next +local match=string.match +local trace_defining=false trackers.register("fonts.defining",function(v) trace_defining=v end) +local trace_features=false trackers.register("tfm.features",function(v) trace_features=v end) +local report_defining=logs.reporter("fonts","defining") +local report_tfm=logs.reporter("fonts","tfm loading") +local findbinfile=resolvers.findbinfile +local fonts=fonts +local handlers=fonts.handlers +local readers=fonts.readers +local constructors=fonts.constructors +local encodings=fonts.encodings +local tfm=constructors.newhandler("tfm") +local tfmfeatures=constructors.newfeatures("tfm") +local registertfmfeature=tfmfeatures.register +constructors.resolvevirtualtoo=false +fonts.formats.tfm="type1" +function tfm.setfeatures(tfmdata,features) + local okay=constructors.initializefeatures("tfm",tfmdata,features,trace_features,report_tfm) + if okay then + return constructors.collectprocessors("tfm",tfmdata,features,trace_features,report_tfm) + else + return {} + end +end +local function read_from_tfm(specification) + local filename=specification.filename + local size=specification.size + if trace_defining then + report_defining("loading tfm file %a at size %s",filename,size) + end + local tfmdata=font.read_tfm(filename,size) + if tfmdata then + local features=specification.features and specification.features.normal or {} + local resources=tfmdata.resources or {} + local properties=tfmdata.properties or {} + local parameters=tfmdata.parameters or {} + local shared=tfmdata.shared or {} + properties.name=tfmdata.name + properties.fontname=tfmdata.fontname + properties.psname=tfmdata.psname + properties.filename=specification.filename + parameters.size=size + shared.rawdata={} + shared.features=features + shared.processes=next(features) and tfm.setfeatures(tfmdata,features) or nil + tfmdata.properties=properties + tfmdata.resources=resources + tfmdata.parameters=parameters + tfmdata.shared=shared + parameters.slant=parameters.slant or parameters[1] or 0 + parameters.space=parameters.space or parameters[2] or 0 + parameters.space_stretch=parameters.space_stretch or parameters[3] or 0 + parameters.space_shrink=parameters.space_shrink or parameters[4] or 0 + parameters.x_height=parameters.x_height or parameters[5] or 0 + parameters.quad=parameters.quad or parameters[6] or 0 + parameters.extra_space=parameters.extra_space or parameters[7] or 0 + constructors.enhanceparameters(parameters) + if constructors.resolvevirtualtoo then + fonts.loggers.register(tfmdata,file.suffix(filename),specification) + local vfname=findbinfile(specification.name,'ovf') + if vfname and vfname~="" then + local vfdata=font.read_vf(vfname,size) + if vfdata then + local chars=tfmdata.characters + for k,v in next,vfdata.characters do + chars[k].commands=v.commands + end + properties.virtualized=true + tfmdata.fonts=vfdata.fonts + end + end + end + local allfeatures=tfmdata.shared.features or specification.features.normal + constructors.applymanipulators("tfm",tfmdata,allfeatures.normal,trace_features,report_tfm) + if not features.encoding then + local encoding,filename=match(properties.filename,"^(.-)%-(.*)$") + if filename and encoding and encodings.known and encodings.known[encoding] then + features.encoding=encoding + end + end + return tfmdata + end +end +local function check_tfm(specification,fullname) + local foundname=findbinfile(fullname,'tfm') or "" + if foundname=="" then + foundname=findbinfile(fullname,'ofm') or "" + end + if foundname=="" then + foundname=fonts.names.getfilename(fullname,"tfm") or "" + end + if foundname~="" then + specification.filename=foundname + specification.format="ofm" + return read_from_tfm(specification) + elseif trace_defining then + report_defining("loading tfm with name %a fails",specification.name) + end +end +readers.check_tfm=check_tfm +function readers.tfm(specification) + local fullname=specification.filename or "" + if fullname=="" then + local forced=specification.forced or "" + if forced~="" then + fullname=specification.name.."."..forced + else + fullname=specification.name + end + end + return check_tfm(specification,fullname) +end + +end -- closure + +do -- begin closure to overcome local limits and interference + +if not modules then modules={} end modules ['font-afm']={ + 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 fonts,logs,trackers,containers,resolvers=fonts,logs,trackers,containers,resolvers +local next,type,tonumber=next,type,tonumber +local format,match,gmatch,lower,gsub,strip=string.format,string.match,string.gmatch,string.lower,string.gsub,string.strip +local abs=math.abs +local P,S,C,R,lpegmatch,patterns=lpeg.P,lpeg.S,lpeg.C,lpeg.R,lpeg.match,lpeg.patterns +local derivetable=table.derive +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 findbinfile=resolvers.findbinfile +local definers=fonts.definers +local readers=fonts.readers +local constructors=fonts.constructors +local afm=constructors.newhandler("afm") +local pfb=constructors.newhandler("pfb") +local afmfeatures=constructors.newfeatures("afm") +local registerafmfeature=afmfeatures.register +afm.version=1.410 +afm.cache=containers.define("fonts","afm",afm.version,true) +afm.autoprefixed=true +afm.helpdata={} +afm.syncspace=true +afm.addligatures=true +afm.addtexligatures=true +afm.addkerns=true +local function setmode(tfmdata,value) + if value then + tfmdata.properties.mode=lower(value) + end +end +registerafmfeature { + name="mode", + description="mode", + initializers={ + base=setmode, + node=setmode, + } +} +local comment=P("Comment") +local spacing=patterns.spacer +local lineend=patterns.newline +local words=C((1-lineend)^1) +local number=C((R("09")+S("."))^1)/tonumber*spacing^0 +local data=lpeg.Carg(1) +local pattern=( + comment*spacing*( + data*( + ("CODINGSCHEME"*spacing*words )/function(fd,a) end+("DESIGNSIZE"*spacing*number*words )/function(fd,a) fd[ 1]=a end+("CHECKSUM"*spacing*number*words )/function(fd,a) fd[ 2]=a end+("SPACE"*spacing*number*"plus"*number*"minus"*number)/function(fd,a,b,c) fd[ 3],fd[ 4],fd[ 5]=a,b,c end+("QUAD"*spacing*number )/function(fd,a) fd[ 6]=a end+("EXTRASPACE"*spacing*number )/function(fd,a) fd[ 7]=a end+("NUM"*spacing*number*number*number )/function(fd,a,b,c) fd[ 8],fd[ 9],fd[10]=a,b,c end+("DENOM"*spacing*number*number )/function(fd,a,b ) fd[11],fd[12]=a,b end+("SUP"*spacing*number*number*number )/function(fd,a,b,c) fd[13],fd[14],fd[15]=a,b,c end+("SUB"*spacing*number*number )/function(fd,a,b) fd[16],fd[17]=a,b end+("SUPDROP"*spacing*number )/function(fd,a) fd[18]=a end+("SUBDROP"*spacing*number )/function(fd,a) fd[19]=a end+("DELIM"*spacing*number*number )/function(fd,a,b) fd[20],fd[21]=a,b end+("AXISHEIGHT"*spacing*number )/function(fd,a) fd[22]=a end + )+(1-lineend)^0 + )+(1-comment)^1 +)^0 +local function scan_comment(str) + local fd={} + lpegmatch(pattern,str,1,fd) + return fd +end +local keys={} +function keys.FontName (data,line) data.metadata.fontname=strip (line) + data.metadata.fullname=strip (line) end +function keys.ItalicAngle (data,line) data.metadata.italicangle=tonumber (line) end +function keys.IsFixedPitch(data,line) data.metadata.isfixedpitch=toboolean(line,true) end +function keys.CharWidth (data,line) data.metadata.charwidth=tonumber (line) end +function keys.XHeight (data,line) data.metadata.xheight=tonumber (line) end +function keys.Descender (data,line) data.metadata.descender=tonumber (line) end +function keys.Ascender (data,line) data.metadata.ascender=tonumber (line) end +function keys.Comment (data,line) + line=lower(line) + local designsize=match(line,"designsize[^%d]*(%d+)") + if designsize then data.metadata.designsize=tonumber(designsize) end +end +local function get_charmetrics(data,charmetrics,vector) + local characters=data.characters + local chr,ind={},0 + for k,v in gmatch(charmetrics,"([%a]+) +(.-) *;") do + if k=='C' then + v=tonumber(v) + if v<0 then + ind=ind+1 + else + ind=v + end + chr={ + index=ind + } + elseif k=='WX' then + chr.width=tonumber(v) + elseif k=='N' then + characters[v]=chr + elseif k=='B' then + local llx,lly,urx,ury=match(v,"^ *(.-) +(.-) +(.-) +(.-)$") + chr.boundingbox={ tonumber(llx),tonumber(lly),tonumber(urx),tonumber(ury) } + elseif k=='L' then + local plus,becomes=match(v,"^(.-) +(.-)$") + local ligatures=chr.ligatures + if ligatures then + ligatures[plus]=becomes + else + chr.ligatures={ [plus]=becomes } + end + end + end +end +local function get_kernpairs(data,kernpairs) + local characters=data.characters + for one,two,value in gmatch(kernpairs,"KPX +(.-) +(.-) +(.-)\n") do + local chr=characters[one] + if chr then + local kerns=chr.kerns + if kerns then + kerns[two]=tonumber(value) + else + chr.kerns={ [two]=tonumber(value) } + end + end + end +end +local function get_variables(data,fontmetrics) + for key,rest in gmatch(fontmetrics,"(%a+) *(.-)[\n\r]") do + local keyhandler=keys[key] + if keyhandler then + keyhandler(data,rest) + end + end +end +local function get_indexes(data,pfbname) + data.resources.filename=resolvers.unresolve(pfbname) + local pfbblob=fontloader.open(pfbname) + if pfbblob then + local characters=data.characters + local pfbdata=fontloader.to_table(pfbblob) + if pfbdata then + local glyphs=pfbdata.glyphs + if glyphs then + if trace_loading then + report_afm("getting index data from %a",pfbname) + end + for index,glyph in next,glyphs do + local name=glyph.name + if name then + local char=characters[name] + if char then + if trace_indexing then + report_afm("glyph %a has index %a",name,index) + end + char.index=index + end + end + end + elseif trace_loading then + report_afm("no glyph data in pfb file %a",pfbname) + end + elseif trace_loading then + report_afm("no data in pfb file %a",pfbname) + end + fontloader.close(pfbblob) + elseif trace_loading then + report_afm("invalid pfb file %a",pfbname) + end +end +local function readafm(filename) + local ok,afmblob,size=resolvers.loadbinfile(filename) + if ok and afmblob then + local data={ + resources={ + filename=resolvers.unresolve(filename), + version=afm.version, + creator="context mkiv", + }, + properties={ + hasitalics=false, + }, + goodies={}, + metadata={ + filename=file.removesuffix(file.basename(filename)) + }, + characters={ + }, + descriptions={ + }, + } + afmblob=gsub(afmblob,"StartCharMetrics(.-)EndCharMetrics",function(charmetrics) + if trace_loading then + report_afm("loading char metrics") + end + get_charmetrics(data,charmetrics,vector) + return "" + end) + afmblob=gsub(afmblob,"StartKernPairs(.-)EndKernPairs",function(kernpairs) + if trace_loading then + report_afm("loading kern pairs") + end + get_kernpairs(data,kernpairs) + return "" + end) + afmblob=gsub(afmblob,"StartFontMetrics%s+([%d%.]+)(.-)EndFontMetrics",function(version,fontmetrics) + if trace_loading then + report_afm("loading variables") + end + data.afmversion=version + get_variables(data,fontmetrics) + data.fontdimens=scan_comment(fontmetrics) + return "" + end) + return data + else + if trace_loading then + report_afm("no valid afm file %a",filename) + end + return nil + end +end +local addkerns,addligatures,addtexligatures,unify,normalize +function afm.load(filename) + filename=resolvers.findfile(filename,'afm') or "" + if filename~="" then + local name=file.removesuffix(file.basename(filename)) + local data=containers.read(afm.cache,name) + local attr=lfs.attributes(filename) + local size,time=attr.size or 0,attr.modification or 0 + local pfbfile=file.replacesuffix(name,"pfb") + local pfbname=resolvers.findfile(pfbfile,"pfb") or "" + if pfbname=="" then + pfbname=resolvers.findfile(file.basename(pfbfile),"pfb") or "" + end + local pfbsize,pfbtime=0,0 + if pfbname~="" then + local attr=lfs.attributes(pfbname) + pfbsize=attr.size or 0 + pfbtime=attr.modification or 0 + end + if not data or data.size~=size or data.time~=time or data.pfbsize~=pfbsize or data.pfbtime~=pfbtime then + report_afm("reading %a",filename) + data=readafm(filename) + if data then + if pfbname~="" then + get_indexes(data,pfbname) + elseif trace_loading then + report_afm("no pfb file for %a",filename) + end + report_afm("unifying %a",filename) + unify(data,filename) + if afm.addligatures then + report_afm("add ligatures") + addligatures(data) + end + if afm.addtexligatures then + report_afm("add tex ligatures") + addtexligatures(data) + end + if afm.addkerns then + report_afm("add extra kerns") + addkerns(data) + end + normalize(data) + report_afm("add tounicode data") + fonts.mappings.addtounicode(data,filename) + data.size=size + data.time=time + data.pfbsize=pfbsize + data.pfbtime=pfbtime + report_afm("saving %a in cache",name) + data=containers.write(afm.cache,name,data) + data=containers.read(afm.cache,name) + end + end + return data + else + return nil + end +end +local uparser=fonts.mappings.makenameparser() +unify=function(data,filename) + local unicodevector=fonts.encodings.agl.unicodes + local unicodes,names={},{} + local private=constructors.privateoffset + local descriptions=data.descriptions + for name,blob in next,data.characters do + local code=unicodevector[name] + if not code then + code=lpegmatch(uparser,name) + if not code then + code=private + private=private+1 + report_afm("assigning private slot %U for unknown glyph name %a",code,name) + end + end + local index=blob.index + unicodes[name]=code + names[name]=index + blob.name=name + descriptions[code]={ + boundingbox=blob.boundingbox, + width=blob.width, + kerns=blob.kerns, + index=index, + name=name, + } + end + for unicode,description in next,descriptions do + local kerns=description.kerns + if kerns then + local krn={} + for name,kern in next,kerns do + local unicode=unicodes[name] + if unicode then + krn[unicode]=kern + else + print(unicode,name) + end + end + description.kerns=krn + end + end + data.characters=nil + local resources=data.resources + local filename=resources.filename or file.removesuffix(file.basename(filename)) + resources.filename=resolvers.unresolve(filename) + resources.unicodes=unicodes + resources.marks={} + resources.names=names + resources.private=private +end +normalize=function(data) +end +local addthem=function(rawdata,ligatures) + if ligatures then + local descriptions=rawdata.descriptions + local resources=rawdata.resources + local unicodes=resources.unicodes + local names=resources.names + for ligname,ligdata in next,ligatures do + local one=descriptions[unicodes[ligname]] + if one then + for _,pair in next,ligdata do + local two,three=unicodes[pair[1]],unicodes[pair[2]] + if two and three then + local ol=one.ligatures + if ol then + if not ol[two] then + ol[two]=three + end + else + one.ligatures={ [two]=three } + end + end + end + end + end + end +end +addligatures=function(rawdata) addthem(rawdata,afm.helpdata.ligatures ) end +addtexligatures=function(rawdata) addthem(rawdata,afm.helpdata.texligatures) end +addkerns=function(rawdata) + local descriptions=rawdata.descriptions + local resources=rawdata.resources + local unicodes=resources.unicodes + local function do_it_left(what) + if what then + for unicode,description in next,descriptions do + local kerns=description.kerns + if kerns then + local extrakerns + for complex,simple in next,what do + complex=unicodes[complex] + simple=unicodes[simple] + if complex and simple then + local ks=kerns[simple] + if ks and not kerns[complex] then + if extrakerns then + extrakerns[complex]=ks + else + extrakerns={ [complex]=ks } + end + end + end + end + if extrakerns then + description.extrakerns=extrakerns + end + end + end + end + end + local function do_it_copy(what) + if what then + for complex,simple in next,what do + complex=unicodes[complex] + simple=unicodes[simple] + if complex and simple then + local complexdescription=descriptions[complex] + if complexdescription then + local simpledescription=descriptions[complex] + if simpledescription then + local extrakerns + local kerns=simpledescription.kerns + if kerns then + for unicode,kern in next,kerns do + if extrakerns then + extrakerns[unicode]=kern + else + extrakerns={ [unicode]=kern } + end + end + end + local extrakerns=simpledescription.extrakerns + if extrakerns then + for unicode,kern in next,extrakerns do + if extrakerns then + extrakerns[unicode]=kern + else + extrakerns={ [unicode]=kern } + end + end + end + if extrakerns then + complexdescription.extrakerns=extrakerns + end + end + end + end + end + end + end + do_it_left(afm.helpdata.leftkerned) + do_it_left(afm.helpdata.bothkerned) + do_it_copy(afm.helpdata.bothkerned) + do_it_copy(afm.helpdata.rightkerned) +end +local function adddimensions(data) + if data then + for unicode,description in next,data.descriptions do + local bb=description.boundingbox + if bb then + local ht,dp=bb[4],-bb[2] + if ht==0 or ht<0 then + else + description.height=ht + end + if dp==0 or dp<0 then + else + description.depth=dp + end + end + end + end +end +local function copytotfm(data) + if data and data.descriptions then + local metadata=data.metadata + local resources=data.resources + local properties=derivetable(data.properties) + local descriptions=derivetable(data.descriptions) + local goodies=derivetable(data.goodies) + local characters={} + local parameters={} + local unicodes=resources.unicodes + for unicode,description in next,data.descriptions do + characters[unicode]={} + end + local filename=constructors.checkedfilename(resources) + local fontname=metadata.fontname or metadata.fullname + local fullname=metadata.fullname or metadata.fontname + local endash=unicodes['space'] + local emdash=unicodes['emdash'] + local spacer="space" + local spaceunits=500 + local monospaced=metadata.isfixedpitch + local charwidth=metadata.charwidth + local italicangle=metadata.italicangle + local charxheight=metadata.xheight and metadata.xheight>0 and metadata.xheight + properties.monospaced=monospaced + parameters.italicangle=italicangle + parameters.charwidth=charwidth + parameters.charxheight=charxheight + if properties.monospaced then + if descriptions[endash] then + spaceunits,spacer=descriptions[endash].width,"space" + end + if not spaceunits and descriptions[emdash] then + spaceunits,spacer=descriptions[emdash].width,"emdash" + end + if not spaceunits and charwidth then + spaceunits,spacer=charwidth,"charwidth" + end + else + if descriptions[endash] then + spaceunits,spacer=descriptions[endash].width,"space" + end + if not spaceunits and charwidth then + spaceunits,spacer=charwidth,"charwidth" + end + end + spaceunits=tonumber(spaceunits) + if spaceunits<200 then + end + parameters.slant=0 + parameters.space=spaceunits + parameters.space_stretch=500 + parameters.space_shrink=333 + parameters.x_height=400 + parameters.quad=1000 + if italicangle then + parameters.italicangle=italicangle + parameters.italicfactor=math.cos(math.rad(90+italicangle)) + parameters.slant=- math.tan(italicangle*math.pi/180) + end + if monospaced then + parameters.space_stretch=0 + parameters.space_shrink=0 + elseif afm.syncspace then + parameters.space_stretch=spaceunits/2 + parameters.space_shrink=spaceunits/3 + end + parameters.extra_space=parameters.space_shrink + if charxheight then + parameters.x_height=charxheight + else + local x=unicodes['x'] + if x then + local x=descriptions[x] + if x then + parameters.x_height=x.height + end + end + end + local fd=data.fontdimens + if fd and fd[8] and fd[9] and fd[10] then + for k,v in next,fd do + parameters[k]=v + end + end + parameters.designsize=(metadata.designsize or 10)*65536 + parameters.ascender=abs(metadata.ascender or 0) + parameters.descender=abs(metadata.descender or 0) + parameters.units=1000 + properties.spacer=spacer + properties.encodingbytes=2 + properties.format=fonts.formats[filename] or "type1" + properties.filename=filename + properties.fontname=fontname + properties.fullname=fullname + properties.psname=fullname + properties.name=filename or fullname or fontname + if next(characters) then + return { + characters=characters, + descriptions=descriptions, + parameters=parameters, + resources=resources, + properties=properties, + goodies=goodies, + } + end + end + return nil +end +function afm.setfeatures(tfmdata,features) + local okay=constructors.initializefeatures("afm",tfmdata,features,trace_features,report_afm) + if okay then + return constructors.collectprocessors("afm",tfmdata,features,trace_features,report_afm) + else + return {} + end +end +local function checkfeatures(specification) +end +local function afmtotfm(specification) + local afmname=specification.filename or specification.name + if specification.forced=="afm" or specification.format=="afm" then + if trace_loading then + report_afm("forcing afm format for %a",afmname) + end + else + local tfmname=findbinfile(afmname,"ofm") or "" + if tfmname~="" then + if trace_loading then + report_afm("fallback from afm to tfm for %a",afmname) + end + return + end + end + if afmname~="" then + local features=constructors.checkedfeatures("afm",specification.features.normal) + specification.features.normal=features + constructors.hashinstance(specification,true) + specification=definers.resolve(specification) + local cache_id=specification.hash + local tfmdata=containers.read(constructors.cache,cache_id) + if not tfmdata then + local rawdata=afm.load(afmname) + if rawdata and next(rawdata) then + adddimensions(rawdata) + tfmdata=copytotfm(rawdata) + if tfmdata and next(tfmdata) then + local shared=tfmdata.shared + if not shared then + shared={} + tfmdata.shared=shared + end + shared.rawdata=rawdata + shared.features=features + shared.processes=afm.setfeatures(tfmdata,features) + end + elseif trace_loading then + report_afm("no (valid) afm file found with name %a",afmname) + end + tfmdata=containers.write(constructors.cache,cache_id,tfmdata) + end + return tfmdata + end +end +local function read_from_afm(specification) + local tfmdata=afmtotfm(specification) + if tfmdata then + tfmdata.properties.name=specification.name + tfmdata=constructors.scale(tfmdata,specification) + local allfeatures=tfmdata.shared.features or specification.features.normal + constructors.applymanipulators("afm",tfmdata,allfeatures,trace_features,report_afm) + fonts.loggers.register(tfmdata,'afm',specification) + end + return tfmdata +end +local function prepareligatures(tfmdata,ligatures,value) + if value then + local descriptions=tfmdata.descriptions + for unicode,character in next,tfmdata.characters do + local description=descriptions[unicode] + local dligatures=description.ligatures + if dligatures then + local cligatures=character.ligatures + if not cligatures then + cligatures={} + character.ligatures=cligatures + end + for unicode,ligature in next,dligatures do + cligatures[unicode]={ + char=ligature, + type=0 + } + end + end + end + end +end +local function preparekerns(tfmdata,kerns,value) + if value then + local rawdata=tfmdata.shared.rawdata + local resources=rawdata.resources + local unicodes=resources.unicodes + local descriptions=tfmdata.descriptions + for u,chr in next,tfmdata.characters do + local d=descriptions[u] + local newkerns=d[kerns] + if newkerns then + local kerns=chr.kerns + if not kerns then + kerns={} + chr.kerns=kerns + end + for k,v in next,newkerns do + local uk=unicodes[k] + if uk then + kerns[uk]=v + end + end + end + end + end +end +local list={ + [0x0027]=0x2019, +} +local function texreplacements(tfmdata,value) + local descriptions=tfmdata.descriptions + local characters=tfmdata.characters + for k,v in next,list do + characters [k]=characters [v] + descriptions[k]=descriptions[v] + end +end +local function ligatures (tfmdata,value) prepareligatures(tfmdata,'ligatures',value) end +local function texligatures(tfmdata,value) prepareligatures(tfmdata,'texligatures',value) end +local function kerns (tfmdata,value) preparekerns (tfmdata,'kerns',value) end +local function extrakerns (tfmdata,value) preparekerns (tfmdata,'extrakerns',value) end +registerafmfeature { + name="liga", + description="traditional ligatures", + initializers={ + base=ligatures, + node=ligatures, + } +} +registerafmfeature { + name="kern", + description="intercharacter kerning", + initializers={ + base=kerns, + node=kerns, + } +} +registerafmfeature { + name="extrakerns", + description="additional intercharacter kerning", + initializers={ + base=extrakerns, + node=extrakerns, + } +} +registerafmfeature { + name='tlig', + description='tex ligatures', + initializers={ + base=texligatures, + node=texligatures, + } +} +registerafmfeature { + name='trep', + description='tex replacements', + initializers={ + base=texreplacements, + node=texreplacements, + } +} +local check_tfm=readers.check_tfm +fonts.formats.afm="type1" +fonts.formats.pfb="type1" +local function check_afm(specification,fullname) + local foundname=findbinfile(fullname,'afm') or "" + if foundname=="" then + foundname=fonts.names.getfilename(fullname,"afm") or "" + end + if foundname=="" and afm.autoprefixed then + local encoding,shortname=match(fullname,"^(.-)%-(.*)$") + if encoding and shortname and fonts.encodings.known[encoding] then + shortname=findbinfile(shortname,'afm') or "" + if shortname~="" then + foundname=shortname + if trace_defining then + report_afm("stripping encoding prefix from filename %a",afmname) + end + end + end + end + if foundname~="" then + specification.filename=foundname + specification.format="afm" + return read_from_afm(specification) + end +end +function readers.afm(specification,method) + local fullname,tfmdata=specification.filename or "",nil + if fullname=="" then + local forced=specification.forced or "" + if forced~="" then + tfmdata=check_afm(specification,specification.name.."."..forced) + end + if not tfmdata then + method=method or definers.method or "afm or tfm" + if method=="tfm" then + tfmdata=check_tfm(specification,specification.name) + elseif method=="afm" then + tfmdata=check_afm(specification,specification.name) + elseif method=="tfm or afm" then + tfmdata=check_tfm(specification,specification.name) or check_afm(specification,specification.name) + else + tfmdata=check_afm(specification,specification.name) or check_tfm(specification,specification.name) + end + end + else + tfmdata=check_afm(specification,fullname) + end + return tfmdata +end +function readers.pfb(specification,method) + local original=specification.specification + if trace_defining then + report_afm("using afm reader for %a",original) + end + specification.specification=gsub(original,"%.pfb",".afm") + specification.forced="afm" + return readers.afm(specification,method) +end + +end -- closure + +do -- begin closure to overcome local limits and interference + if not modules then modules={} end modules ['luatex-fonts-tfm']={ version=1.001, comment="companion to luatex-*.tex", diff --git a/luaotfload.dtx b/luaotfload.dtx index 56e9d4d..622c902 100644 --- a/luaotfload.dtx +++ b/luaotfload.dtx @@ -1217,10 +1217,10 @@ and the derived files % Context libraries. % \ouritem {luaotfload-letterspace.lua} font-based letterspacing. % \ouritem {luaotfload-typo-krn.lua} attribute-based letterspacing. -% \ouritem {luaotfload-font-afm.lua} \abbrev{afm} loading. % \ouritem {luaotfload-font-afk.lua} supplementary glyph % information for \abbrev{afm} -% fonts. +% fonts (enables ligatures +% and kerning). % \end{itemize} % % \begin{figure}[b] @@ -43,7 +43,6 @@ local names = { "luaotfload-extralibs.lua", "luaotfload-features.lua", "luaotfload-font-afk.lua", - "luaotfload-font-afm.lua", "luaotfload-fonts-cbk.lua", "luaotfload-fonts-def.lua", "luaotfload-fonts-enc.lua", |