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author | Vincent Sanders <vince@netsurf-browser.org> | 2011-01-02 23:20:31 +0000 |
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committer | Vincent Sanders <vince@netsurf-browser.org> | 2011-01-02 23:20:31 +0000 |
commit | f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e (patch) | |
tree | 4b98d88fc719198ebfa28f37a58fb61e8bddfcb8 /src/parse/properties/play_during.c | |
parent | 606cf0251feacadcaa63191a643dc8fc57a7c613 (diff) | |
download | libcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.gz libcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.bz2 |
simple properties split in parse similar to select in preparation for future generation
svn path=/trunk/libcss/; revision=11188
Diffstat (limited to 'src/parse/properties/play_during.c')
-rw-r--r-- | src/parse/properties/play_during.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/parse/properties/play_during.c b/src/parse/properties/play_during.c new file mode 100644 index 0000000..f4b0ba4 --- /dev/null +++ b/src/parse/properties/play_during.c @@ -0,0 +1,142 @@ +/* + * This file is part of LibCSS. + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org> + */ + +#include <assert.h> +#include <string.h> + +#include "bytecode/bytecode.h" +#include "bytecode/opcodes.h" +#include "parse/properties/properties.h" +#include "parse/properties/utils.h" + +/** + * Parse play-during + * + * \param c Parsing context + * \param vector Vector of tokens to process + * \param ctx Pointer to vector iteration context + * \param result Pointer to location to receive resulting style + * \return CSS_OK on success, + * CSS_NOMEM on memory exhaustion, + * CSS_INVALID if the input is not valid + * + * Post condition: \a *ctx is updated with the next token to process + * If the input is invalid, then \a *ctx remains unchanged. + */ +css_error parse_play_during(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + int orig_ctx = *ctx; + css_error error; + const css_token *token; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + uint32_t required_size; + lwc_string *uri; + bool match; + + /* URI [ IDENT(mix) || IDENT(repeat) ]? | IDENT(auto,none,inherit) */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_URI)) { + *ctx = orig_ctx; + return CSS_INVALID; + } + + if (token->type == CSS_TOKEN_IDENT) { + if ((lwc_string_caseless_isequal( + token->idata, c->strings[INHERIT], + &match) == lwc_error_ok && match)) { + flags |= FLAG_INHERIT; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[NONE], + &match) == lwc_error_ok && match)) { + value = PLAY_DURING_NONE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[AUTO], + &match) == lwc_error_ok && match)) { + value = PLAY_DURING_AUTO; + } else { + *ctx = orig_ctx; + return CSS_INVALID; + } + } else { + int modifiers; + + value = PLAY_DURING_URI; + + error = c->sheet->resolve(c->sheet->resolve_pw, + c->sheet->url, + token->idata, &uri); + if (error != CSS_OK) { + *ctx = orig_ctx; + return error; + } + + for (modifiers = 0; modifiers < 2; modifiers++) { + consumeWhitespace(vector, ctx); + + token = parserutils_vector_peek(vector, *ctx); + if (token != NULL && token->type == CSS_TOKEN_IDENT) { + if ((lwc_string_caseless_isequal( + token->idata, c->strings[MIX], + &match) == lwc_error_ok && + match)) { + if ((value & PLAY_DURING_MIX) == 0) + value |= PLAY_DURING_MIX; + else { + *ctx = orig_ctx; + return CSS_INVALID; + } + } else if (lwc_string_caseless_isequal( + token->idata, + c->strings[REPEAT], + &match) == lwc_error_ok && + match) { + if ((value & PLAY_DURING_REPEAT) == 0) + value |= PLAY_DURING_REPEAT; + else { + *ctx = orig_ctx; + return CSS_INVALID; + } + } else { + *ctx = orig_ctx; + return CSS_INVALID; + } + + parserutils_vector_iterate(vector, ctx); + } + } + } + + opv = buildOPV(CSS_PROP_PLAY_DURING, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && + (value & PLAY_DURING_TYPE_MASK) == PLAY_DURING_URI) + required_size += sizeof(lwc_string *); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, required_size, result); + if (error != CSS_OK) { + *ctx = orig_ctx; + return error; + } + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + if ((flags & FLAG_INHERIT) == false && + (value & PLAY_DURING_TYPE_MASK) == PLAY_DURING_URI) { + /* Don't ref URI -- we want to pass ownership to the bytecode */ + memcpy((uint8_t *) (*result)->bytecode + sizeof(opv), + &uri, sizeof(lwc_string *)); + } + + return CSS_OK; +} |