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authorPhilipp Gesang <phg42.2a@gmail.com>2014-01-14 14:25:55 +0100
committerPhilipp Gesang <phg42.2a@gmail.com>2014-01-14 14:25:55 +0100
commit17fdb59546dda7c2294f2445c5e9a9402a3bfead (patch)
tree94034001ec4076782e2b5ce3ab0c4df7eb5ab954 /luaotfload-parsers.lua
parent9417b2566c7e0ed40fbf216711c45d5e0be36fb7 (diff)
downloadluaotfload-17fdb59546dda7c2294f2445c5e9a9402a3bfead.tar.gz
[parsers] group definitions of terminals
Diffstat (limited to 'luaotfload-parsers.lua')
-rw-r--r--luaotfload-parsers.lua75
1 files changed, 36 insertions, 39 deletions
diff --git a/luaotfload-parsers.lua b/luaotfload-parsers.lua
index a989722..e6db21f 100644
--- a/luaotfload-parsers.lua
+++ b/luaotfload-parsers.lua
@@ -25,7 +25,7 @@ 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, Cs, Ct = lpeg.Cg, lpeg.Cs, lpeg.Ct
+local Cg, Cmt, Cs, Ct = lpeg.Cg, lpeg.Cmt, lpeg.Cs, lpeg.Ct
local kpse = kpse
local kpseexpand_path = kpse.expand_path
@@ -51,6 +51,29 @@ local lfsisfile = lfs.isfile
local lfsisdir = lfs.isdir
-------------------------------------------------------------------------------
+--- COMMON PATTERNS
+-------------------------------------------------------------------------------
+
+local dot = P"."
+local colon = 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
-------------------------------------------------------------------------------
@@ -80,31 +103,27 @@ local lfsisdir = lfs.isdir
--doc]]--
-local alpha = R("az", "AZ")
-local digit = R"09"
local tag_name = C(alpha^1)
-local whitespace = S" \n\r\t\v"
-local ws = whitespace^1
local comment = P"<!--" * (1 - P"--")^0 * P"-->"
---> header specifica
local xml_declaration = P"<?xml" * (1 - P"?>")^0 * P"?>"
-local xml_doctype = P"<!DOCTYPE" * ws
+local xml_doctype = P"<!DOCTYPE" * xmlws
* "fontconfig" * (1 - P">")^0 * P">"
local header = xml_declaration^-1
- * (xml_doctype + comment + ws)^0
+ * (xml_doctype + comment + xmlws)^0
---> enforce root node
-local root_start = P"<" * ws^-1 * P"fontconfig" * ws^-1 * P">"
-local root_stop = P"</" * ws^-1 * P"fontconfig" * ws^-1 * P">"
+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 = ws^-1
+local xml_name = xmlws^-1
* C(xml_namestartchar * xml_namechar^0)
-local xml_attvalue = dquote * C((1 - S[[%&"]])^1) * dquote * ws^-1
- + squote * C((1 - S[[%&']])^1) * squote * ws^-1
+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)
@@ -118,11 +137,11 @@ local scan_node = function (tag)
local p_tag = P(tag)
local with_attributes = P"<" * p_tag
* Cg(xml_attr_list, "attributes")^-1
- * ws^-1
+ * xmlws^-1
* P">"
- local plain = P"<" * p_tag * ws^-1 * P">"
+ local plain = P"<" * p_tag * xmlws^-1 * P">"
local node_start = plain + with_attributes
- local node_stop = P"</" * p_tag * ws^-1 * P">"
+ 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)
@@ -307,12 +326,10 @@ luaotfload.parsers.read_fonts_conf = read_fonts_conf
-------------------------------------------------------------------------------
-local trailingslashes = P"/"^1 * P(-1)
+local trailingslashes = slash^1 * P(-1)
local stripslashes = C((1 - trailingslashes)^0)
parsers.stripslashes = stripslashes
-local comma = P","
-local noncomma = 1-comma
local splitcomma = Ct((C(noncomma^1) + comma)^1)
parsers.splitcomma = splitcomma
@@ -459,27 +476,7 @@ local check_garbage = function (_,i, garbage)
return false
end
-local lpegmatch = lpeg.match
-local P, S, R = lpeg.P, lpeg.S, lpeg.R
-local C, Cc, Cf, Cg, Cmt, Cs, Ct
- = lpeg.C, lpeg.Cc, lpeg.Cf, lpeg.Cg, lpeg.Cmt, lpeg.Cs, lpeg.Ct
-
---- terminals and low-level classes -----------------------------------
---- note we could use the predefined ones from lpeg.patterns
-local dot = P"."
-local colon = P":"
-local featuresep = S",;"
-local slash = P"/"
-local equals = P"="
-local lbrk, rbrk = P"[", P"]"
-
-local spacing = S" \t\v"
-local ws = spacing^0
-
-local digit = R"09"
-local alpha = R("az", "AZ")
-local anum = alpha + digit
-local decimal = digit^1 * (dot * digit^0)^-1
+local featuresep = comma
--- modifiers ---------------------------------------------------------
--[[doc--