/*
* 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 css__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;
lwc_string *uri;
bool match;
uint32_t uri_snumber;
/* 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;
}
error = css__stylesheet_string_add(c->sheet,
uri,
&uri_snumber);
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);
}
}
}
error = css__stylesheet_style_appendOPV(result, CSS_PROP_PLAY_DURING, flags, value);
if (error != CSS_OK) {
*ctx = orig_ctx;
return error;
}
if ((flags & FLAG_INHERIT) == false &&
(value & PLAY_DURING_TYPE_MASK) == PLAY_DURING_URI) {
error = css__stylesheet_style_append(result, uri_snumber);
}
if (error != CSS_OK)
*ctx = orig_ctx;
return error;
}