From 36966024c4044afa3706f2c51b544925dd438793 Mon Sep 17 00:00:00 2001 From: John Mark Bell Date: Fri, 1 Aug 2008 17:31:29 +0000 Subject: Stub out a CSS 2.1 stage 2 parser. Parser core doesn't need to know about css_stylesheet, so change its API. svn path=/trunk/libcss/; revision=4854 --- src/parse/Makefile | 2 +- src/parse/css21.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/parse/css21.h | 25 ++++++++++++++ src/parse/parse.c | 10 ++---- src/parse/parse.h | 5 +-- 5 files changed, 128 insertions(+), 10 deletions(-) create mode 100644 src/parse/css21.c create mode 100644 src/parse/css21.h (limited to 'src') diff --git a/src/parse/Makefile b/src/parse/Makefile index 9e1c6dd..fc27e8e 100644 --- a/src/parse/Makefile +++ b/src/parse/Makefile @@ -35,7 +35,7 @@ d := $(DIR) CFLAGS := $(CFLAGS) -I$(d) # Sources -SRCS_$(d) := parse.c +SRCS_$(d) := parse.c css21.c # Append to sources for component SOURCES += $(addprefix $(d), $(SRCS_$(d))) diff --git a/src/parse/css21.c b/src/parse/css21.c new file mode 100644 index 0000000..63e8df7 --- /dev/null +++ b/src/parse/css21.c @@ -0,0 +1,96 @@ +/* + * This file is part of LibCSS. + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2008 John-Mark Bell + */ + +#include "parse/css21.h" +#include "parse/parse.h" + +#include "utils/utils.h" + +/** + * Context for a CSS 2.1 parser + */ +struct css_css21 { + css_stylesheet *sheet; /**< The stylesheet to parse for */ + css_parser *parser; /**< The underlying core parser */ + + css_alloc alloc; /**< Memory (de)allocation function */ + void *pw; /**< Client's private data */ +}; + +static bool css21_handle_event(css_parser_event type, + const parserutils_vector *tokens, void *pw); + +/** + * Create a CSS 2.1 parser + * + * \param sheet The stylesheet object to parse for + * \param parser The core parser object to use + * \param alloc Memory (de)allocation function + * \param pw Pointer to client-specific private data + * \return Pointer to parser object, or NULL on failure + */ +css_css21 *css_css21_create(css_stylesheet *sheet, css_parser *parser, + css_alloc alloc, void *pw) +{ + css_css21 *css21; + css_parser_optparams params; + css_error error; + + if (sheet == NULL || parser == NULL || alloc == NULL) + return NULL; + + css21 = alloc(NULL, sizeof(css_css21), pw); + if (css21 == NULL) + return NULL; + + params.event_handler.handler = css21_handle_event; + params.event_handler.pw = css21; + error = css_parser_setopt(parser, CSS_PARSER_EVENT_HANDLER, ¶ms); + if (error != CSS_OK) { + alloc(css21, 0, pw); + return NULL; + } + + css21->sheet = sheet; + css21->parser = parser; + css21->alloc = alloc; + css21->pw = pw; + + return css21; +} + +/** + * Destroy a CSS 2.1 parser + * + * \param css21 The parser to destroy + */ +void css_css21_destroy(css_css21 *css21) +{ + if (css21 == NULL) + return; + + css21->alloc(css21, 0, css21->pw); +} + +/** + * Handler for core parser events + * + * \param type The event type + * \param tokens Vector of tokens read since last event, or NULL + * \param pw Pointer to handler context + * \return False to signal parse error, true otherwise + */ +bool css21_handle_event(css_parser_event type, const parserutils_vector *tokens, + void *pw) +{ + UNUSED(type); + UNUSED(tokens); + UNUSED(pw); + + return true; +} + diff --git a/src/parse/css21.h b/src/parse/css21.h new file mode 100644 index 0000000..c1b1fda --- /dev/null +++ b/src/parse/css21.h @@ -0,0 +1,25 @@ +/* + * This file is part of LibCSS. + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2008 John-Mark Bell + */ + +#ifndef css_parse_css21_h_ +#define css_parse_css21_h_ + +#include + +#include +#include + +#include "parse/parse.h" + +typedef struct css_css21 css_css21; + +css_css21 *css_css21_create(css_stylesheet *sheet, css_parser *parser, + css_alloc alloc, void *pw); +void css_css21_destroy(css_css21 *css21); + +#endif + diff --git a/src/parse/parse.c b/src/parse/parse.c index dedccae..e19bd15 100644 --- a/src/parse/parse.c +++ b/src/parse/parse.c @@ -78,8 +78,6 @@ typedef struct parser_state */ struct css_parser { - css_stylesheet *sheet; /**< The sheet we're parsing */ - parserutils_inputstream *stream; /**< The inputstream */ css_lexer *lexer; /**< The lexer to use */ @@ -171,21 +169,20 @@ static css_error (*parseFuncs[])(css_parser *parser) = { /** * Create a CSS parser * - * \param sheet The sheet to parse data for * \param charset Charset of data, if known, or NULL * \param cs_source Source of charset information, or CSS_CHARSET_DEFAULT * \param alloc Memory (de)allocation function * \param pw Pointer to client-specific private data * \return Pointer to parser instance, or NULL on memory exhaustion */ -css_parser *css_parser_create(css_stylesheet *sheet, const char *charset, - css_charset_source cs_source, css_alloc alloc, void *pw) +css_parser *css_parser_create(const char *charset, css_charset_source cs_source, + css_alloc alloc, void *pw) { css_parser *parser; parser_state initial = { sStart, 0 }; parserutils_error perror; - if (sheet == NULL || alloc == NULL) + if (alloc == NULL) return NULL; parser = alloc(NULL, sizeof(css_parser), pw); @@ -259,7 +256,6 @@ css_parser *css_parser_create(css_stylesheet *sheet, const char *charset, return NULL; } - parser->sheet = sheet; parser->quirks = false; parser->pushback = NULL; parser->parseError = false; diff --git a/src/parse/parse.h b/src/parse/parse.h index c1b6830..4137c65 100644 --- a/src/parse/parse.h +++ b/src/parse/parse.h @@ -10,6 +10,7 @@ #include +#include #include #include @@ -55,8 +56,8 @@ typedef union css_parser_optparams { } event_handler; } css_parser_optparams; -css_parser *css_parser_create(css_stylesheet *sheet, const char *charset, - css_charset_source cs_source, css_alloc alloc, void *pw); +css_parser *css_parser_create(const char *charset, css_charset_source cs_source, + css_alloc alloc, void *pw); void css_parser_destroy(css_parser *parser); css_error css_parser_setopt(css_parser *parser, css_parser_opttype type, -- cgit v1.2.3