[*] move source files to ./src

1 files changed, 0 insertions, 578 deletions

diff --git a/luaotfload-parsers.lua b/luaotfload-parsers.lua
deleted file mode 100644
index 1048e1d..0000000
--- a/luaotfload-parsers.lua
+++ /dev/null
@@ -1,578 +0,0 @@
-#!/usr/bin/env texlua
--------------------------------------------------------------------------------
---         FILE:  luaotfload-parsers.lua
---  DESCRIPTION:  various lpeg-based parsers used in Luaotfload
--- REQUIREMENTS:  Luaotfload > 2.4
---       AUTHOR:  Philipp Gesang (Phg), <phg42.2a@gmail.com>
---      VERSION:  same as Luaotfload
---      CREATED:  2014-01-14 10:15:20+0100
--------------------------------------------------------------------------------
---
-
-if not modules then modules = { } end modules ['luaotfload-parsers'] = {
-  version   = "2.5",
-  comment   = "companion to luaotfload-main.lua",
-  author    = "Philipp Gesang",
-  copyright = "Luaotfload Development Team",
-  license   = "GNU GPL v2.0"
-}
-
-luaotfload              = luaotfload or { }
-luaotfload.parsers      = luaotfload.parsers or { }
-local parsers           = luaotfload.parsers
-
-local lpeg              = require "lpeg"
-local P, R, S           = lpeg.P, lpeg.R, lpeg.S
-local lpegmatch         = lpeg.match
-local C, Cc, Cf         = lpeg.C, lpeg.Cc, lpeg.Cf
-local Cg, Cmt, Cs, Ct   = lpeg.Cg, lpeg.Cmt, lpeg.Cs, lpeg.Ct
-
-local kpse              = kpse
-local kpseexpand_path   = kpse.expand_path
-local kpsereadable_file = kpse.readable_file
-
-local file              = file
-local filejoin          = file.join
-local filedirname       = file.dirname
-
-local io                = io
-local ioopen            = io.open
-
-local log               = luaotfload.log
-local report            = log.report
-
-local string            = string
-local stringsub         = string.sub
-local stringfind        = string.find
-local stringlower       = string.lower
-
-local mathceil          = math.ceil
-
-local lfs               = lfs
-local lfsisfile         = lfs.isfile
-local lfsisdir          = lfs.isdir
-
--------------------------------------------------------------------------------
----                         COMMON PATTERNS
--------------------------------------------------------------------------------
-
-local dot               = P"."
-local colon             = P":"
-local semicolon         = P";"
-local comma             = P","
-local noncomma          = 1 - comma
-local slash             = P"/"
-local equals            = P"="
-local lbrk, rbrk        = P"[", P"]"
-
-local spacing           = S" \t\v"
-local linebreak         = S"\n\r"
-local whitespace        = spacing + linebreak
-local ws                = spacing^0
-local xmlws             = whitespace^1
-
-local digit             = R"09"
-local alpha             = R("az", "AZ")
-local anum              = alpha + digit
-local decimal           = digit^1 * (dot * digit^0)^-1
-
--------------------------------------------------------------------------------
----                                FONTCONFIG
--------------------------------------------------------------------------------
-
---[[doc--
-
-  For fonts installed on the operating system, there are several
-  options to make Luaotfload index them:
-
-   - If OSFONTDIR is set (which is the case under windows by default
-     but not on the other OSs), it scans it at the same time as the
-     texmf tree, in the function scan_texmf_fonts().
-
-   - Otherwise
-     - under Windows and Mac OSX, we take a look at some hardcoded
-       directories,
-     - under Unix, it reads /etc/fonts/fonts.conf and processes the
-       directories specified there.
-
-  This means that if you have fonts in fancy directories, you need to
-  set them in OSFONTDIR.
-
-  Beware: OSFONTDIR is a kpathsea variable, so fonts found in these
-  paths, though technically system fonts, are registered in the
-  category “texmf”, not “system”. This may have consequences for the
-  lookup order when a font file (or a font with the same name
-  information) is located in both the system and the texmf tree.
-
---doc]]--
-
-local tag_name          = C(alpha^1)
-local comment           = P"<!--" * (1 - P"--")^0 * P"-->"
-
----> header specifica
-local xml_declaration   = P"<?xml" * (1 - P"?>")^0 * P"?>"
-local xml_doctype       = P"<!DOCTYPE" * xmlws
-                        * "fontconfig" * (1 - P">")^0 * P">"
-local header            = xml_declaration^-1
-                        * (xml_doctype + comment + xmlws)^0
-
----> enforce root node
-local root_start        = P"<"  * xmlws^-1 * P"fontconfig" * xmlws^-1 * P">"
-local root_stop         = P"</" * xmlws^-1 * P"fontconfig" * xmlws^-1 * P">"
-
-local dquote, squote    = P[["]], P"'"
-local xml_namestartchar = S":_" + alpha --- ascii only, funk the rest
-local xml_namechar      = S":._" + alpha + digit
-local xml_name          = xmlws^-1
-                        * C(xml_namestartchar * xml_namechar^0)
-local xml_attvalue      = dquote * C((1 - S[[%&"]])^1) * dquote * xmlws^-1
-                        + squote * C((1 - S[[%&']])^1) * squote * xmlws^-1
-local xml_attr          = Cg(xml_name * P"=" * xml_attvalue)
-local xml_attr_list     = Cf(Ct"" * xml_attr^1, rawset)
-
---[[doc--
-      scan_node creates a parser for a given xml tag.
---doc]]--
---- string -> bool -> lpeg_t
-local scan_node = function (tag)
-    --- Node attributes go into a table with the index “attributes”
-    --- (relevant for “prefix="xdg"” and the likes).
-    local p_tag = P(tag)
-    local with_attributes   = P"<" * p_tag
-                            * Cg(xml_attr_list, "attributes")^-1
-                            * xmlws^-1
-                            * P">"
-    local plain             = P"<" * p_tag * xmlws^-1 * P">"
-    local node_start        = plain + with_attributes
-    local node_stop         = P"</" * p_tag * xmlws^-1 * P">"
-    --- there is no nesting, the earth is flat ...
-    local node              = node_start
-                            * Cc(tag) * C(comment + (1 - node_stop)^1)
-                            * node_stop
-    return Ct(node) -- returns {string, string [, attributes = { key = val }] }
-end
-
---[[doc--
-      At the moment, the interesting tags are “dir” for
-      directory declarations, and “include” for including
-      further configuration files.
-
-      spec: http://freedesktop.org/software/fontconfig/fontconfig-user.html
---doc]]--
-local include_node        = scan_node"include"
-local dir_node            = scan_node"dir"
-
-local element             = dir_node
-                          + include_node
-                          + comment         --> ignore
-                          + P(1-root_stop)  --> skip byte
-
-local root                = root_start * Ct(element^0) * root_stop
-local p_cheapxml          = header * root
-
---lpeg.print(p_cheapxml) ---> 757 rules with v0.10
-
---[[doc--
-      fonts_conf_scanner() handles configuration files.
-      It is called on an abolute path to a config file (e.g.
-      /home/luser/.config/fontconfig/fonts.conf) and returns a list
-      of the nodes it managed to extract from the file.
---doc]]--
---- string -> path list
-local fonts_conf_scanner = function (path)
-  local fh = ioopen(path, "r")
-  if not fh then
-    report("both", 3, "db", "Cannot open fontconfig file %s.", path)
-    return
-  end
-  local raw = fh:read"*all"
-  fh:close()
-
-  local confdata = lpegmatch(p_cheapxml, raw)
-  if not confdata then
-    report("both", 3, "db", "Cannot scan fontconfig file %s.", path)
-    return
-  end
-  return confdata
-end
-
-local p_conf   = P".conf" * P(-1)
-local p_filter = (1 - p_conf)^1 * p_conf
-
-local conf_filter = function (path)
-  if lpegmatch (p_filter, path) then
-    return true
-  end
-  return false
-end
-
---[[doc--
-      read_fonts_conf_indeed() is called with six arguments; the
-      latter three are tables that represent the state and are
-      always returned.
-      The first three are
-          · the path to the file
-          · the expanded $HOME
-          · the expanded $XDG_CONFIG_DIR
---doc]]--
---- string -> string -> string -> tab -> tab -> (tab * tab * tab)
-local read_fonts_conf_indeed
-read_fonts_conf_indeed = function (start, home, xdg_home,
-                                   acc, done, dirs_done,
-                                   find_files)
-
-  local paths = fonts_conf_scanner(start)
-  if not paths then --- nothing to do
-    return acc, done, dirs_done
-  end
-
-  for i=1, #paths do
-    local pathobj = paths[i]
-    local kind, path = pathobj[1], pathobj[2]
-    local attributes = pathobj.attributes
-    if attributes and attributes.prefix == "xdg" then
-      --- this prepends the xdg root (usually ~/.config)
-      path = filejoin(xdg_home, path)
-    end
-
-    if kind == "dir" then
-      if stringsub(path, 1, 1) == "~" then
-        path = filejoin(home, stringsub(path, 2))
-      end
-      --- We exclude paths with texmf in them, as they should be
-      --- found anyway; also duplicates are ignored by checking
-      --- if they are elements of dirs_done.
-      ---
-      --- FIXME does this mean we cannot access paths from
-      --- distributions (e.g. Context minimals) installed
-      --- separately?
-      if not (stringfind(path, "texmf") or dirs_done[path]) then
-        acc[#acc+1] = path
-        dirs_done[path] = true
-      end
-
-    elseif kind == "include" then
-      --- here the path can be four things: a directory or a file,
-      --- in absolute or relative path.
-      if stringsub(path, 1, 1) == "~" then
-        path = filejoin(home, stringsub(path, 2))
-      elseif --- if the path is relative, we make it absolute
-        not ( lfsisfile(path) or lfsisdir(path) )
-        then
-          path = filejoin(filedirname(start), path)
-        end
-        if  lfsisfile(path)
-          and kpsereadable_file(path)
-          and not done[path]
-          then
-            --- we exclude path with texmf in them, as they should
-            --- be found otherwise
-            acc = read_fonts_conf_indeed(
-            path, home, xdg_home,
-            acc,  done, dirs_done)
-          elseif lfsisdir(path) then --- arrow code ahead
-            local config_files = find_files (path, conf_filter)
-            for _, filename in next, config_files do
-              if not done[filename] then
-                acc = read_fonts_conf_indeed(
-                filename, home, xdg_home,
-                acc,      done, dirs_done)
-              end
-            end
-          end --- match “kind”
-        end --- iterate paths
-      end
-
-      --inspect(acc)
-      --inspect(done)
-      return acc, done, dirs_done
-    end --- read_fonts_conf_indeed()
-
---[[doc--
-      read_fonts_conf() sets up an accumulator and two sets
-      for tracking what’s been done.
-
-      Also, the environment variables HOME and XDG_CONFIG_HOME --
-      which are constants anyways -- are expanded so don’t have to
-      repeat that over and over again as with the old parser.
-      Now they’re just passed on to every call of
-      read_fonts_conf_indeed().
-
-      read_fonts_conf() is also the only reference visible outside
-      the closure.
---doc]]--
-
---- list -> (string -> function option -> string list) -> list
-
-local read_fonts_conf = function (path_list, find_files)
-  local home      = kpseexpand_path"~" --- could be os.getenv"HOME"
-  local xdg_home  = kpseexpand_path"$XDG_CONFIG_HOME"
-  if xdg_home == "" then xdg_home = filejoin(home, ".config") end
-  local acc       = { } ---> list: paths collected
-  local done      = { } ---> set:  files inspected
-  local dirs_done = { } ---> set:  dirs in list
-  for i=1, #path_list do --- we keep the state between files
-    acc, done, dirs_done = read_fonts_conf_indeed(
-                                path_list[i], home, xdg_home,
-                                acc, done, dirs_done,
-                                find_files)
-  end
-  return acc
-end
-
-luaotfload.parsers.read_fonts_conf = read_fonts_conf
-
-
-
--------------------------------------------------------------------------------
----                               MISC PARSERS
--------------------------------------------------------------------------------
-
-
-local trailingslashes   = slash^1 * P(-1)
-local stripslashes      = C((1 - trailingslashes)^0)
-parsers.stripslashes    = stripslashes
-
-local splitcomma        = Ct((C(noncomma^1) + comma)^1)
-parsers.splitcomma      = splitcomma
-
-
-
--------------------------------------------------------------------------------
----                          FONT REQUEST
--------------------------------------------------------------------------------
-
-
---[[doc------------------------------------------------------------------------
-
-    The luaotfload font request syntax (see manual)
-    has a canonical form:
-
-        \font<csname>=<prefix>:<identifier>:<features>
-
-    where
-      <csname> is the control sequence that activates the font
-      <prefix> is either “file” or “name”, determining the lookup
-      <identifer> is either a file name (no path) or a font
-                  name, depending on the lookup
-      <features> is a list of switches or options, separated by
-                 semicolons or commas; a switch is of the form “+” foo
-                 or “-” foo, options are of the form lhs “=” rhs
-
-    however, to ensure backward compatibility we also have
-    support for Xetex-style requests.
-
-    for the Xetex emulation see:
-    · The XeTeX Reference Guide by Will Robertson, 2011
-    · The XeTeX Companion by Michel Goosens, 2010
-    · About XeTeX by Jonathan Kew, 2005
-
-
-    caueat emptor.
-
-        the request is parsed into one of **four** different lookup
-        categories: the regular ones, file and name, as well as the
-        Xetex compatibility ones, path and anon. (maybe a better choice
-        of identifier would be “ambig”.)
-
-        according to my reconstruction, the correct chaining of the
-        lookups for each category is as follows:
-
-        | File -> ( db/filename lookup )
-
-        | Name -> ( db/name lookup,
-                    db/filename lookup )
-
-        | Path -> ( db/filename lookup,
-                    fullpath lookup )
-
-        | Anon -> ( kpse.find_file(),     // <- for tfm, ofm
-                    db/name lookup,
-                    db/filename lookup,
-                    fullpath lookup )
-
-        caching of successful lookups is essential. we now as of v2.2
-        have a lookup cache that is stored in a separate file. it
-        pertains only to name: lookups, and is described in more detail
-        in luaotfload-database.lua.
-
--------------------------------------------------------------------------------
-
-    One further incompatibility between Xetex and Luatex-Fonts consists
-    in their option list syntax: apparently, Xetex requires key-value
-    options to be prefixed by a "+" (ascii “plus”) character. We
-    silently accept this as well, dropping the first byte if it is a
-    plus or minus character.
-
-    Reference: https://github.com/lualatex/luaotfload/issues/79#issuecomment-18104483
-
---doc]]------------------------------------------------------------------------
-
-
-local handle_normal_option = function (key, val)
-    val = stringlower(val)
-    --- the former “toboolean()” handler
-    if val == "true"  then
-        val = true
-    elseif val == "false" then
-        val = false
-    end
-    return key, val
-end
-
---[[doc--
-
-    Xetex style indexing begins at zero which we just increment before
-    passing it along to the font loader.  Ymmv.
-
---doc]]--
-
-local handle_xetex_option = function (key, val)
-    val = stringlower(val)
-    local numeric = tonumber(val) --- decimal only; keeps colors intact
-    if numeric then --- ugh
-        if  mathceil(numeric) == numeric then -- integer, possible index
-            val = tostring(numeric + 1)
-        end
-    elseif val == "true"  then
-        val = true
-    elseif val == "false" then
-        val = false
-    end
-    return key, val
-end
-
---[[doc--
-
-    Instead of silently ignoring invalid options we emit a warning to
-    the log.
-
-    Note that we have to return a pair to please rawset(). This creates
-    an entry on the resulting features hash which will later be removed
-    during set_default_features().
-
---doc]]--
-
-local handle_invalid_option = function (opt)
-    report("log", 0, "load", "font option %q unknown.", opt)
-    return "", false
-end
-
---[[doc--
-
-    Dirty test if a file: request is actually a path: lookup; don’t
-    ask! Note this fails on Windows-style absolute paths. These will
-    *really* have to use the correct request.
-
---doc]]--
-
-local check_garbage = function (_,i, garbage)
-    if stringfind(garbage, "/") then
-        report("log", 0, "load",  --- ffs use path!
-            "warning: path in file: lookups is deprecated; ")
-        report("log", 0, "load", "use bracket syntax instead!")
-        report("log", 0, "load",
-            "position: %d; full match: %q",
-            i, garbage)
-        return true
-    end
-    return false
-end
-
-local featuresep = comma + semicolon
-
---- modifiers ---------------------------------------------------------
---[[doc--
-    The slash notation: called “modifiers” (Kew) or “font options”
-    (Robertson, Goosens)
-    we only support the shorthands for italic / bold / bold italic
-    shapes, as well as setting optical size, the rest is ignored.
---doc]]--
-local style_modifier    = (P"BI" + P"IB" + P"bi" + P"ib" + S"biBI")
-                        / stringlower
-local size_modifier     = S"Ss" * P"="    --- optical size
-                        * Cc"optsize" * C(decimal)
-local other_modifier    = P"AAT" + P"aat" --- apple stuff;  unsupported
-                        + P"ICU" + P"icu" --- not applicable
-                        + P"GR"  + P"gr"  --- sil stuff;    unsupported
-local garbage_modifier  = ((1 - colon - slash)^0 * Cc(false))
-local modifier          = slash * (other_modifier      --> ignore
-                                 + Cs(style_modifier)  --> collect
-                                 + Ct(size_modifier)   --> collect
-                                 + garbage_modifier)   --> warn
-local modifier_list     = Cg(Ct(modifier^0), "modifiers")
-
---- lookups -----------------------------------------------------------
-local fontname          = C((1-S":(/")^1)  --- like luatex-fonts
-local unsupported       = Cmt((1-S":(")^1, check_garbage)
-local prefixed          = P"name:" * ws * Cg(fontname, "name")
---- initially we intended file: to emulate the behavior of
---- luatex-fonts, i.e. no paths allowed. after all, we do have XeTeX
---- emulation with the path lookup and it interferes with db lookups.
---- turns out fontspec and other widely used packages rely on file:
---- with paths already, so we’ll add a less strict rule here.  anyways,
---- we’ll emit a warning.
-                        + P"file:" * ws * Cg(unsupported, "path")
-                        + P"file:" * ws * Cg(fontname, "file")
---- EXPERIMENTAL: kpse lookup
-                        + P"kpse:" * ws * Cg(fontname, "kpse")
---- EXPERIMENTAL: custom lookup
-                        + P"my:" * ws * Cg(fontname, "my")
-local unprefixed        = Cg(fontname, "anon")
-local path_lookup       = lbrk * Cg(C((1-rbrk)^1), "path") * rbrk
-
---- features ----------------------------------------------------------
-local field_char        = anum + S"+-." --- sic!
-local field             = field_char^1
---- assignments are “lhs=rhs”
----              or “+lhs=rhs” (Xetex-style)
---- switches    are “+key” | “-key”
-local normal_option     = C(field) * ws * equals * ws * C(field) * ws
-local xetex_option      = P"+" * ws * normal_option
-local ignore_option     = (1 - equals - featuresep)^1
-                        * equals
-                        * (1 - featuresep)^1
-local assignment        = xetex_option  / handle_xetex_option
-                        + normal_option / handle_normal_option
-                        + ignore_option / handle_invalid_option
-local switch            = P"+" * ws * C(field) * Cc(true)
-                        + P"-" * ws * C(field) * Cc(false)
-                        +             C(field) * Cc(true)   --- default
-local feature_expr      = ws * Cg(assignment + switch) * ws
-local option            = feature_expr
-local feature_list      = Cf(Ct""
-                           * option
-                           * (featuresep * option^-1)^0
-                           , rawset)
-                        * featuresep^-1
-
---- other -------------------------------------------------------------
---- This rule is present in the original parser. It sets the “sub”
---- field of the specification which allows addressing a specific
---- font inside a TTC container. Neither in Luatex-Fonts nor in
---- Luaotfload is this documented, so we might as well silently drop
---- it. However, as backward compatibility is one of our prime goals we
---- just insert it here and leave it undocumented until someone cares
---- to ask. (Note: afair subfonts are numbered, but this rule matches a
---- string; I won’t mess with it though until someone reports a
---- problem.)
---- local subvalue   = P("(") * (C(P(1-S("()"))^1)/issub) * P(")") -- for Kim
---- Note to self: subfonts apparently start at index 0. Tested with
---- Cambria.ttc that includes “Cambria Math” at 0 and “Cambria” at 1.
---- Other values cause luatex to segfault.
-local subfont           = P"(" * Cg((1 - S"()")^1, "sub") * P")"
---- top-level rules ---------------------------------------------------
---- \font\foo=<specification>:<features>
-local features          = Cg(feature_list, "features")
-local specification     = (prefixed + unprefixed)
-                        * subfont^-1
-                        * modifier_list^-1
-local font_request      = Ct(path_lookup   * (colon^-1 * features)^-1
-                           + specification * (colon    * features)^-1)
-
---  lpeg.print(font_request)
---- v2.5 parser: 1065 rules
---- v1.2 parser:  230 rules
-
-luaotfload.parsers.font_request = font_request
-