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Open HTML to PDF is a CSS 2.1 renderer written in Java. This artifact contains the core rendering and layout code.
/*
* {{{ header & license
* Copyright (c) 2007 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package org.xhtmlrenderer.css.parser;
%%
%class Lexer
%unicode
%ignorecase
%line
%type Token
%{
public int yyline() {
return this.yyline;
}
public void setyyline(int i) {
this.yyline = i;
}
%}
h = [0-9a-fA-F]
nonascii = [^\000-\177]
unicode = \\{h}{1,6}(\r\n|[ \t\r\n\f])?
escape = {unicode}|\\[^\r\n\f0-9a-fA-F]
nmstart = [_a-zA-Z]|{nonascii}|{escape}
nmchar = [_a-zA-Z0-9-]|{nonascii}|{escape}
string1 = \"([^\n\r\f\"\\]|\\{nl}|{escape})*\"
string2 = \'([^\n\r\f\'\\]|\\{nl}|{escape})*\'
invalid1 = \"([^\n\r\f\"\\]|\\{nl}|{escape})*
invalid2 = \'([^\n\r\f\'\\]|\\{nl}|{escape})*
comment = \/\*[^*]*\*+([^/*][^*]*\*+)*\/
ident = -?{nmstart}{nmchar}*
name = {nmchar}+
num = [0-9]+|[0-9]*"."[0-9]+
string = {string1}|{string2}
invalid = {invalid1}|{invalid2}
url = ([!#$%&*-~]|{nonascii}|{escape})*
s = [ \t\r\n\f]+
w = {s}?
nl = \n|\r\n|\r|\f
A = a|\\0{0,4}(41|61)(\r\n|[ \t\r\n\f])?
C = c|\\0{0,4}(43|63)(\r\n|[ \t\r\n\f])?
D = d|\\0{0,4}(44|64)(\r\n|[ \t\r\n\f])?
E = e|\\0{0,4}(45|65)(\r\n|[ \t\r\n\f])?
G = g|\\0{0,4}(47|67)(\r\n|[ \t\r\n\f])?|\\g
H = h|\\0{0,4}(48|68)(\r\n|[ \t\r\n\f])?|\\h
I = i|\\0{0,4}(49|69)(\r\n|[ \t\r\n\f])?|\\i
K = k|\\0{0,4}(4b|6b)(\r\n|[ \t\r\n\f])?|\\k
M = m|\\0{0,4}(4d|6d)(\r\n|[ \t\r\n\f])?|\\m
N = n|\\0{0,4}(4e|6e)(\r\n|[ \t\r\n\f])?|\\n
P = p|\\0{0,4}(50|70)(\r\n|[ \t\r\n\f])?|\\p
R = r|\\0{0,4}(52|72)(\r\n|[ \t\r\n\f])?|\\r
S = s|\\0{0,4}(53|73)(\r\n|[ \t\r\n\f])?|\\s
T = t|\\0{0,4}(54|74)(\r\n|[ \t\r\n\f])?|\\t
X = x|\\0{0,4}(58|78)(\r\n|[ \t\r\n\f])?|\\x
Z = z|\\0{0,4}(5a|7a)(\r\n|[ \t\r\n\f])?|\\z
%%
{s} {return Token.TK_S;}
{comment} { /* ignore comments */ }
"" {return Token.TK_CDC;}
"~=" {return Token.TK_INCLUDES;}
"|=" {return Token.TK_DASHMATCH;}
"^=" {return Token.TK_PREFIXMATCH;}
"$=" {return Token.TK_SUFFIXMATCH;}
"*=" {return Token.TK_SUBSTRINGMATCH;}
{w}"{" {return Token.TK_LBRACE;}
{w}"+" {return Token.TK_PLUS;}
{w}">" {return Token.TK_GREATER;}
{w}"," {return Token.TK_COMMA;}
{string} {return Token.TK_STRING;}
{invalid} {return Token.TK_INVALID; /* unclosed string */}
{ident} {return Token.TK_IDENT;}
"#"{name} {return Token.TK_HASH;}
"@import" {return Token.TK_IMPORT_SYM;}
"@page" {return Token.TK_PAGE_SYM;}
"@media" {return Token.TK_MEDIA_SYM;}
"@charset " {return Token.TK_CHARSET_SYM;}
"@namespace" {return Token.TK_NAMESPACE_SYM;}
"@font-face" {return Token.TK_FONT_FACE_SYM;}
"@"{ident} {return Token.TK_AT_RULE;}
"!"({w}|{comment})*"important" {return Token.TK_IMPORTANT_SYM;}
{num}{E}{M} {return Token.TK_EMS;}
{num}{E}{X} {return Token.TK_EXS;}
{num}{P}{X} {return Token.TK_PX;}
{num}{C}{M} {return Token.TK_CM;}
{num}{M}{M} {return Token.TK_MM;}
{num}{I}{N} {return Token.TK_IN;}
{num}{P}{T} {return Token.TK_PT;}
{num}{P}{C} {return Token.TK_PC;}
{num}{D}{E}{G} {return Token.TK_ANGLE;}
{num}{R}{A}{D} {return Token.TK_ANGLE;}
{num}{G}{R}{A}{D} {return Token.TK_ANGLE;}
{num}{M}{S} {return Token.TK_TIME;}
{num}{S} {return Token.TK_TIME;}
{num}{H}{Z} {return Token.TK_FREQ;}
{num}{K}{H}{Z} {return Token.TK_FREQ;}
{num}{ident} {return Token.TK_DIMENSION;}
{num}% {return Token.TK_PERCENTAGE;}
{num} {return Token.TK_NUMBER;}
"url("{w}{string}{w}")" {return Token.TK_URI;}
"url("{w}{url}{w}")" {return Token.TK_URI;}
{ident}"(" {return Token.TK_FUNCTION;}
"}" {return Token.TK_RBRACE;}
";" {return Token.TK_SEMICOLON;}
"/" {return Token.TK_VIRGULE;}
":" {return Token.TK_COLON;}
"-" {return Token.TK_MINUS;}
")" {return Token.TK_RPAREN;}
"[" {return Token.TK_LBRACKET;}
"]" {return Token.TK_RBRACKET;}
"." {return Token.TK_PERIOD;}
"=" {return Token.TK_EQUALS;}
"*" {return Token.TK_ASTERISK;}
"|" {return Token.TK_VERTICAL_BAR;}
<> {return Token.TK_EOF;}
. {return Token.createOtherToken(yytext());}