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Diffstat (limited to 'src/css.l')
| -rw-r--r-- | src/css.l | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/css.l b/src/css.l new file mode 100644 index 0000000..0f0a8a0 --- /dev/null +++ b/src/css.l @@ -0,0 +1,167 @@ +%option case-insensitive +%option noyywrap +%option never-interactive +%option nounput + +%top{ +/* config.h must precede flex's inclusion of <stdio.h> + in order for its _GNU_SOURCE definition to take effect. */ +#include <config.h> +} + +%{ +/* Lex source for CSS tokenizing. + Taken from http://www.w3.org/TR/CSS21/grammar.html#q2 + Copyright (C) 2006, 2009-2011, 2015, 2018-2022 Free Software + Foundation, Inc. + +This file is part of GNU Wget. + +GNU Wget is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at +your option) any later version. + +GNU Wget 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 General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Wget. If not, see <http://www.gnu.org/licenses/>. + +Additional permission under GNU GPL version 3 section 7 + +If you modify this program, or any covered work, by linking or +combining it with the OpenSSL project's OpenSSL library (or a +modified version of that library), containing parts covered by the +terms of the OpenSSL or SSLeay licenses, the Free Software Foundation +grants you additional permission to convey the resulting work. +Corresponding Source for a non-source form of such a combination +shall include the source code for the parts of OpenSSL used as well +as that of the covered work. */ + +#define YY_NO_INPUT + +#include "css-tokens.h" + +#if defined __clang__ || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) + #pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang mourns about the next one + #pragma GCC diagnostic ignored "-Wunused-function" + #pragma GCC diagnostic ignored "-Wunused-macros" + #pragma GCC diagnostic ignored "-Wunused-parameter" + #pragma GCC diagnostic ignored "-Wsign-compare" + #pragma GCC diagnostic ignored "-Wswitch-default" + #pragma GCC diagnostic ignored "-Wunreachable-code" // clang + #pragma clang diagnostic ignored "-Wshorten-64-to-32" + #ifndef __clang__ + #pragma GCC diagnostic ignored "-Wsuggest-attribute=pure" + #endif +#endif + +%} + +h [0-9a-f] +nonascii [\240-\377] +unicode \\{h}{1,6}(\r\n|[ \t\r\n\f])? +escape {unicode}|\\[^\r\n\f0-9a-f] +nmstart [_a-z]|{nonascii}|{escape} +nmchar [_a-z0-9-]|{nonascii}|{escape} +string1 \"([^\n\r\f\\"]|\\{nl}|{escape})*\" +string2 \'([^\n\r\f\\']|\\{nl}|{escape})*\' +badstring1 \"([^\n\r\f\\"]|\\{nl}|{escape})*\\? +badstring2 \'([^\n\r\f\\']|\\{nl}|{escape})*\\? +badcomment1 \/\*[^*]*\*+([^/*][^*]*\*+)* +badcomment2 \/\*[^*]*(\*+[^/*][^*]*)* +baduri1 url\({w}([!#$%&*-\[\]-~]|{nonascii}|{escape})*{w} +baduri2 url\({w}{string}{w} +baduri3 url\({w}{badstring} +comment \/\*[^*]*\*+([^/*][^*]*\*+)*\/ +ident -?{nmstart}{nmchar}* +name {nmchar}+ +num [0-9]+|[0-9]*"."[0-9]+ +string {string1}|{string2} +badstring {badstring1}|{badstring2} +badcomment {badcomment1}|{badcomment2} +baduri {baduri1}|{baduri2}|{baduri3} +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 +L l|\\0{0,4}(4c|6c)(\r\n|[ \t\r\n\f])?|\\l +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 +O o|\\0{0,4}(4f|6f)(\r\n|[ \t\r\n\f])?|\\o +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 +U u|\\0{0,4}(55|75)(\r\n|[ \t\r\n\f])?|\\u +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 S;} + +{comment} {return COMMENT;} +#\/\*[^*]*\*+([^/*][^*]*\*+)*\/ /* ignore comments */ +{badcomment} /* unclosed comment at EOF */ + +"<!--" {return CDO;} +"-->" {return CDC;} +"~=" {return INCLUDES;} +"|=" {return DASHMATCH;} + +{string} {return STRING;} +{badstring} {return BAD_STRING;} + +{ident} {return IDENT;} + +"#"{name} {return HASH;} + +@{I}{M}{P}{O}{R}{T} {return IMPORT_SYM;} +@{P}{A}{G}{E} {return PAGE_SYM;} +@{M}{E}{D}{I}{A} {return MEDIA_SYM;} +"@charset " {return CHARSET_SYM;} + +"!"({w}|{comment})*{I}{M}{P}{O}{R}{T}{A}{N}{T} {return IMPORTANT_SYM;} + +{num}{E}{M} {return EMS;} +{num}{E}{X} {return EXS;} +{num}{P}{X} {return LENGTH;} +{num}{C}{M} {return LENGTH;} +{num}{M}{M} {return LENGTH;} +{num}{I}{N} {return LENGTH;} +{num}{P}{T} {return LENGTH;} +{num}{P}{C} {return LENGTH;} +{num}{D}{E}{G} {return ANGLE;} +{num}{R}{A}{D} {return ANGLE;} +{num}{G}{R}{A}{D} {return ANGLE;} +{num}{M}{S} {return TIME;} +{num}{S} {return TIME;} +{num}{H}{Z} {return FREQ;} +{num}{K}{H}{Z} {return FREQ;} +{num}{ident} {return DIMENSION;} + +{num}% {return PERCENTAGE;} +{num} {return NUMBER;} + +"url("{w}{string}{w}")" {return URI;} +"url("{w}{url}{w}")" {return URI;} +{baduri} {return BAD_URI;} + +{ident}"(" {return FUNCTION;} + +. {return *yytext;} + +%% |