mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-24 07:19:37 +03:00
6807b4208a
NetSurf includes are now done with ""s and other system includes with <>s as C intended. The scandeps tool has been updated to only look for ""ed includes, and to verify that the files exist in the tree before adding them to the dependency lines. The depend rule has therefore been augmented to make sure the autogenerated files are built before it is run. This is untested under self-hosted RISC OS builds. All else tested and works. svn path=/trunk/netsurf/; revision=3307
113 lines
2.6 KiB
Plaintext
113 lines
2.6 KiB
Plaintext
/*
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* This file is part of NetSurf, http://netsurf-browser.org/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
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*/
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/** \file
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* CSS tokeniser using re2c.
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*
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* see CSS2 Specification, chapter 4
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* http://www.w3.org/TR/REC-CSS2/syndata.html,
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* and errata
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* http://www.w3.org/Style/css2-updates/REC-CSS2-19980512-errata
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*/
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#include <stdbool.h>
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#define CSS_INTERNALS
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#include "css/css.h"
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#include "css/parser.h"
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#define YYCTYPE unsigned char
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#define YYCURSOR (*buffer)
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#define YYLIMIT end
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#define YYMARKER marker
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#define YYFILL(n) { return 0; }
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/**
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* Identify a CSS source token.
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*
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* \param buffer source to tokenise, updated to new position
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* \param end end of source
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* \param token_text updated to start of recognized token
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* \return token number
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*/
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int css_tokenise(unsigned char **buffer, unsigned char *end,
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unsigned char **token_text)
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{
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unsigned char *marker;
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start:
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*token_text = YYCURSOR;
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/*!re2c
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nonascii = [\200-\377];
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unicode = "\\" [0-9a-f]+ ("\r\n" | [ \n\r\t\f])?;
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escape = unicode | "\\" [ -~\200-\377];
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nmchar = [-a-zA-Z0-9_] | nonascii | escape;
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nmstart = [a-zA-Z_] | nonascii | escape;
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ident = [-]? nmstart nmchar*;
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name = nmchar+;
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num = [+-]? ([0-9]+ | [0-9]* "." [0-9]+);
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nl = "\n" | "\r\n" | "\r" | "\f";
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string1 = "\"" ([\t !#$%&(-~] | "\\" nl | "'" | nonascii | escape)* "\"";
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string2 = "'" ([\t !#$%&(-~] | "\\" nl | "\""| nonascii | escape)* "'";
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string = string1 | string2;
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s = [ \t\r\n\f];
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w = s*;
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any = [\000-\377];
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ident { return IDENT; }
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"@" ident { return ATKEYWORD; }
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string { return STRING; }
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"#" name { return HASH; }
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num { return NUMBER; }
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num "%" { return PERCENTAGE; }
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num ident { return DIMENSION; }
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"url(" w string w ")" | "url(" w ([!#$%&*-~]|nonascii|escape)* w ")"
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{ return URI; }
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"U+" [0-9A-F?]+ ("-" [0-9A-F]+ )?
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{ return UNICODE_RANGE; }
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"<!--" { goto start; /* ignore CDO */ }
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"-->" { goto start; /* ignore CDC */ }
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";" { return SEMI; }
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"{" { return LBRACE; }
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"}" { return RBRACE; }
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"(" { return LPAREN; }
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")" { return RPAREN; }
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"[" { return LBRAC; }
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"]" { return RBRAC; }
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s+ { return S; }
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"/*" (any\[*])* "*"+ ((any\[/*]) (any\[*])* "*"+)* "/"
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{ goto start; /* ignore comments */ }
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ident "(" { return FUNCTION; }
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"~=" { return INCLUDES; }
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"|=" { return DASHMATCH; }
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"^=" { return PREFIX; }
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"$=" { return SUFFIX; }
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"*=" { return SUBSTR; }
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"=" { return EQUALS; }
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":" { return COLON; }
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"," { return COMMA; }
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"+" { return PLUS; }
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">" { return GT; }
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"." { return DOT; }
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"*" { return ASTERISK; }
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any { return DELIM; }
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*/
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}
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