Merge pull request #1 from phi-gamma/master

Updating with current master

1 files changed, 0 insertions, 440 deletions

diff --git a/otfl-font-def.lua b/otfl-font-def.lua
deleted file mode 100644
index 96de480..0000000
--- a/otfl-font-def.lua
+++ /dev/null
@@ -1,440 +0,0 @@
-if not modules then modules = { } end modules ['font-def'] = {
-    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 concat = table.concat
-local format, gmatch, match, find, lower, gsub = string.format, string.gmatch, string.match, string.find, string.lower, string.gsub
-local tostring, next = tostring, next
-local lpegmatch = lpeg.match
-
-local allocate = utilities.storage.allocate
-
-local trace_defining     = false  trackers  .register("fonts.defining", function(v) trace_defining     = v end)
-local directive_embedall = false  directives.register("fonts.embedall", function(v) directive_embedall = v end)
-
-trackers.register("fonts.loading", "fonts.defining", "otf.loading", "afm.loading", "tfm.loading")
-trackers.register("fonts.all", "fonts.*", "otf.*", "afm.*", "tfm.*")
-
-local report_defining = logs.reporter("fonts","defining")
-
---[[ldx--
-<p>Here we deal with defining fonts. We do so by intercepting the
-default loader that only handles <l n='tfm'/>.</p>
---ldx]]--
-
-local fonts         = fonts
-local fontdata      = fonts.hashes.identifiers
-local readers       = fonts.readers
-local definers      = fonts.definers
-local specifiers    = fonts.specifiers
-local constructors  = fonts.constructors
-
-readers.sequence    = allocate { 'otf', 'ttf', 'afm', 'tfm', 'lua' } -- dfont ttc
-
-local variants      = allocate()
-specifiers.variants = variants
-
-definers.methods    = definers.methods or { }
-
-local internalized  = allocate() -- internal tex numbers (private)
-
-
-local loadedfonts   = constructors.loadedfonts
-local designsizes   = constructors.designsizes
-
---[[ldx--
-<p>We hardly gain anything when we cache the final (pre scaled)
-<l n='tfm'/> table. But it can be handy for debugging, so we no
-longer carry this code along. Also, we now have quite some reference
-to other tables so we would end up with lots of catches.</p>
---ldx]]--
-
---[[ldx--
-<p>We can prefix a font specification by <type>name:</type> or
-<type>file:</type>. The first case will result in a lookup in the
-synonym table.</p>
-
-<typing>
-[ name: | file: ] identifier [ separator [ specification ] ]
-</typing>
-
-<p>The following function split the font specification into components
-and prepares a table that will move along as we proceed.</p>
---ldx]]--
-
--- beware, we discard additional specs
---
--- method:name method:name(sub) method:name(sub)*spec method:name*spec
--- name name(sub) name(sub)*spec name*spec
--- name@spec*oeps
-
-local splitter, splitspecifiers = nil, ""
-
-local P, C, S, Cc = lpeg.P, lpeg.C, lpeg.S, lpeg.Cc
-
-local left  = P("(")
-local right = P(")")
-local colon = P(":")
-local space = P(" ")
-
-definers.defaultlookup = "file"
-
-local prefixpattern  = P(false)
-
-local function addspecifier(symbol)
-    splitspecifiers     = splitspecifiers .. symbol
-    local method        = S(splitspecifiers)
-    local lookup        = C(prefixpattern) * colon
-    local sub           = left * C(P(1-left-right-method)^1) * right
-    local specification = C(method) * C(P(1)^1)
-    local name          = C((1-sub-specification)^1)
-    splitter = P((lookup + Cc("")) * name * (sub + Cc("")) * (specification + Cc("")))
-end
-
-local function addlookup(str,default)
-    prefixpattern = prefixpattern + P(str)
-end
-
-definers.addlookup = addlookup
-
-addlookup("file")
-addlookup("name")
-addlookup("spec")
-
-local function getspecification(str)
-    return lpegmatch(splitter,str)
-end
-
-definers.getspecification = getspecification
-
-function definers.registersplit(symbol,action,verbosename)
-    addspecifier(symbol)
-    variants[symbol] = action
-    if verbosename then
-        variants[verbosename] = action
-    end
-end
-
-function definers.makespecification(specification,lookup,name,sub,method,detail,size)
-    size = size or 655360
-    if trace_defining then
-        report_defining("%s -> lookup: %s, name: %s, sub: %s, method: %s, detail: %s",
-            specification, (lookup ~= "" and lookup) or "[file]", (name ~= "" and name) or "-",
-            (sub ~= "" and sub) or "-", (method ~= "" and method) or "-", (detail ~= "" and detail) or "-")
-    end
-    if not lookup or lookup == "" then
-        lookup = definers.defaultlookup
-    end
-    local t = {
-        lookup        = lookup,        -- forced type
-        specification = specification, -- full specification
-        size          = size,          -- size in scaled points or -1000*n
-        name          = name,          -- font or filename
-        sub           = sub,           -- subfont (eg in ttc)
-        method        = method,        -- specification method
-        detail        = detail,        -- specification
-        resolved      = "",            -- resolved font name
-        forced        = "",            -- forced loader
-        features      = { },           -- preprocessed features
-    }
-    return t
-end
-
-function definers.analyze(specification, size)
-    -- can be optimized with locals
-    local lookup, name, sub, method, detail = getspecification(specification or "")
-    return definers.makespecification(specification, lookup, name, sub, method, detail, size)
-end
-
---[[ldx--
-<p>We can resolve the filename using the next function:</p>
---ldx]]--
-
-definers.resolvers = definers.resolvers or { }
-local resolvers    = definers.resolvers
-
--- todo: reporter
-
-function resolvers.file(specification)
-    local suffix = file.suffix(specification.name)
-    if fonts.formats[suffix] then
-        specification.forced = suffix
-        specification.name = file.removesuffix(specification.name)
-    end
-end
-
-function resolvers.name(specification)
-    local resolve = fonts.names.resolve
-    if resolve then
-        local resolved, sub = resolve(specification.name,specification.sub,specification) -- we pass specification for overloaded versions
-        if resolved then
-            specification.resolved = resolved
-            specification.sub      = sub
-            local suffix = file.suffix(resolved)
-            if fonts.formats[suffix] then
-                specification.forced = suffix
-                specification.name   = file.removesuffix(resolved)
-            else
-                specification.name = resolved
-            end
-        end
-    else
-        resolvers.file(specification)
-    end
-end
-
-function resolvers.spec(specification)
-    local resolvespec = fonts.names.resolvespec
-    if resolvespec then
-        local resolved, sub = resolvespec(specification.name,specification.sub,specification) -- we pass specification for overloaded versions
-        if resolved then
-            specification.resolved = resolved
-            specification.sub      = sub
-            specification.forced   = file.extname(resolved)
-            specification.name     = file.removesuffix(resolved)
-        end
-    else
-        resolvers.name(specification)
-    end
-end
-
-function definers.resolve(specification)
-    if not specification.resolved or specification.resolved == "" then -- resolved itself not per se in mapping hash
-        local r = resolvers[specification.lookup]
-        if r then
-            r(specification)
-        end
-    end
-    if specification.forced == "" then
-        specification.forced = nil
-    else
-        specification.forced = specification.forced
-    end
-    specification.hash = lower(specification.name .. ' @ ' .. constructors.hashfeatures(specification))
-    if specification.sub and specification.sub ~= "" then
-        specification.hash = specification.sub .. ' @ ' .. specification.hash
-    end
-    return specification
-end
-
---[[ldx--
-<p>The main read function either uses a forced reader (as determined by
-a lookup) or tries to resolve the name using the list of readers.</p>
-
-<p>We need to cache when possible. We do cache raw tfm data (from <l
-n='tfm'/>, <l n='afm'/> or <l n='otf'/>). After that we can cache based
-on specificstion (name) and size, that is, <l n='tex'/> only needs a number
-for an already loaded fonts. However, it may make sense to cache fonts
-before they're scaled as well (store <l n='tfm'/>'s with applied methods
-and features). However, there may be a relation between the size and
-features (esp in virtual fonts) so let's not do that now.</p>
-
-<p>Watch out, here we do load a font, but we don't prepare the
-specification yet.</p>
---ldx]]--
-
--- very experimental:
-
-function definers.applypostprocessors(tfmdata)
-    local postprocessors = tfmdata.postprocessors
-    if postprocessors then
-        for i=1,#postprocessors do
-            local extrahash = postprocessors[i](tfmdata) -- after scaling etc
-            if type(extrahash) == "string" and extrahash ~= "" then
-                -- e.g. a reencoding needs this
-                extrahash = gsub(lower(extrahash),"[^a-z]","-")
-                tfmdata.properties.fullname = format("%s-%s",tfmdata.properties.fullname,extrahash)
-            end
-        end
-    end
-    return tfmdata
-end
-
--- function definers.applypostprocessors(tfmdata)
---     return tfmdata
--- end
-
-local function checkembedding(tfmdata)
-    local properties = tfmdata.properties
-    local embedding
-    if directive_embedall then
-        embedding = "full"
-    elseif properties and properties.filename and constructors.dontembed[properties.filename] then
-        embedding = "no"
-    else
-        embedding = "subset"
-    end
-    if properties then
-        properties.embedding = embedding
-    else
-        tfmdata.properties = { embedding = embedding }
-    end
-    tfmdata.embedding = embedding
-end
-
-function definers.loadfont(specification)
-    local hash = constructors.hashinstance(specification)
-    local tfmdata = loadedfonts[hash] -- hashes by size !
-    if not tfmdata then
-        local forced = specification.forced or ""
-        if forced ~= "" then
-            local reader = readers[lower(forced)]
-            tfmdata = reader and reader(specification)
-            if not tfmdata then
-                report_defining("forced type %s of %s not found",forced,specification.name)
-            end
-        else
-            local sequence = readers.sequence -- can be overloaded so only a shortcut here
-            for s=1,#sequence do
-                local reader = sequence[s]
-                if readers[reader] then -- we skip not loaded readers
-                    if trace_defining then
-                        report_defining("trying (reader sequence driven) type %s for %s with file %s",reader,specification.name,specification.filename or "unknown")
-                    end
-                    tfmdata = readers[reader](specification)
-                    if tfmdata then
-                        break
-                    else
-                        specification.filename = nil
-                    end
-                end
-            end
-        end
-        if tfmdata then
-            tfmdata = definers.applypostprocessors(tfmdata)
-            checkembedding(tfmdata) -- todo: general postprocessor
-            loadedfonts[hash] = tfmdata
-            designsizes[specification.hash] = tfmdata.parameters.designsize
-        end
-    end
-    if not tfmdata then
-        report_defining("font with asked name '%s' is not found using lookup '%s'",specification.name,specification.lookup)
-    end
-    return tfmdata
-end
-
---[[ldx--
-<p>For virtual fonts we need a slightly different approach:</p>
---ldx]]--
-
-function constructors.readanddefine(name,size) -- no id -- maybe a dummy first
-    local specification = definers.analyze(name,size)
-    local method = specification.method
-    if method and variants[method] then
-        specification = variants[method](specification)
-    end
-    specification = definers.resolve(specification)
-    local hash = constructors.hashinstance(specification)
-    local id = definers.registered(hash)
-    if not id then
-        local tfmdata = definers.loadfont(specification)
-        if tfmdata then
-            tfmdata.properties.hash = hash
-            id = font.define(tfmdata)
-            definers.register(tfmdata,id)
-        else
-            id = 0  -- signal
-        end
-    end
-    return fontdata[id], id
-end
-
---[[ldx--
-<p>So far the specifiers. Now comes the real definer. Here we cache
-based on id's. Here we also intercept the virtual font handler. Since
-it evolved stepwise I may rewrite this bit (combine code).</p>
-
-In the previously defined reader (the one resulting in a <l n='tfm'/>
-table) we cached the (scaled) instances. Here we cache them again, but
-this time based on id. We could combine this in one cache but this does
-not gain much. By the way, passing id's back to in the callback was
-introduced later in the development.</p>
---ldx]]--
-
-local lastdefined  = nil -- we don't want this one to end up in s-tra-02
-local internalized = { }
-
-function definers.current() -- or maybe current
-    return lastdefined
-end
-
-function definers.registered(hash)
-    local id = internalized[hash]
-    return id, id and fontdata[id]
-end
-
-function definers.register(tfmdata,id)
-    if tfmdata and id then
-        local hash = tfmdata.properties.hash
-        if not internalized[hash] then
-            internalized[hash] = id
-            if trace_defining then
-                report_defining("registering font, id: %s, hash: %s",id or "?",hash or "?")
-            end
-            fontdata[id] = tfmdata
-        end
-    end
-end
-
-function definers.read(specification,size,id) -- id can be optional, name can already be table
-    statistics.starttiming(fonts)
-    if type(specification) == "string" then
-        specification = definers.analyze(specification,size)
-    end
-    local method = specification.method
-    if method and variants[method] then
-        specification = variants[method](specification)
-    end
-    specification = definers.resolve(specification)
-    local hash = constructors.hashinstance(specification)
-    local tfmdata = definers.registered(hash) -- id
-    if tfmdata then
-        if trace_defining then
-            report_defining("already hashed: %s",hash)
-        end
-    else
-        tfmdata = definers.loadfont(specification) -- can be overloaded
-        if tfmdata then
-            if trace_defining then
-                report_defining("loaded and hashed: %s",hash)
-            end
-        --~ constructors.checkvirtualid(tfmdata) -- interferes
-            tfmdata.properties.hash = hash
-            if id then
-                definers.register(tfmdata,id)
-            end
-        else
-            if trace_defining then
-                report_defining("not loaded and hashed: %s",hash)
-            end
-        end
-    end
-    lastdefined = tfmdata or id -- todo ! ! ! ! !
-    if not tfmdata then -- or id?
-        report_defining( "unknown font %s, loading aborted",specification.name)
-    elseif trace_defining and type(tfmdata) == "table" then
-        local properties = tfmdata.properties or { }
-        local parameters = tfmdata.parameters or { }
-        report_defining("using %s font with id %s, name:%s size:%s bytes:%s encoding:%s fullname:%s filename:%s",
-                       properties.format        or "unknown",
-                       id                       or "?",
-                       properties.name          or "?",
-                       parameters.size          or "default",
-                       properties.encodingbytes or "?",
-                       properties.encodingname  or "unicode",
-                       properties.fullname      or "?",
-         file.basename(properties.filename      or "?"))
-    end
-    statistics.stoptiming(fonts)
-    return tfmdata
-end
-
---[[ldx--
-<p>We overload the <l n='tfm'/> reader.</p>
---ldx]]--
-
-callbacks.register('define_font', definers.read, "definition of fonts (tfmdata preparation)")