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/*
* 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 quotes
*
* \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_quotes(css_language *c,
const parserutils_vector *vector, int *ctx,
css_style *result)
{
int orig_ctx = *ctx;
css_error error = CSS_INVALID;
const css_token *token;
bool match;
/* [ STRING STRING ]+ | IDENT(none,inherit) */
token = parserutils_vector_iterate(vector, ctx);
if ((token == NULL) ||
((token->type != CSS_TOKEN_IDENT) &&
(token->type != CSS_TOKEN_STRING))) {
*ctx = orig_ctx;
return CSS_INVALID;
}
if ((token->type == CSS_TOKEN_IDENT) &&
(lwc_string_caseless_isequal(token->idata,
c->strings[INHERIT],
&match) == lwc_error_ok && match)) {
error = css_stylesheet_style_inherit(result, CSS_PROP_QUOTES);
} else if ((token->type == CSS_TOKEN_IDENT) &&
(lwc_string_caseless_isequal(token->idata,
c->strings[NONE],
&match) == lwc_error_ok && match)) {
error = css__stylesheet_style_appendOPV(result,
CSS_PROP_QUOTES, 0, QUOTES_NONE);
} else if (token->type == CSS_TOKEN_STRING) {
bool first = true;
/* Macro to output the value marker, awkward because we need to check
* first to determine how the value is constructed.
*/
#define CSS_FIRST_APPEND(CSSVAL) css__stylesheet_style_append(result, first?buildOPV(CSS_PROP_QUOTES, 0, CSSVAL):CSSVAL)
/* [ STRING STRING ]+ */
while ((token != NULL) && (token->type == CSS_TOKEN_STRING)) {
uint32_t open_snumber;
uint32_t close_snumber;
error = css__stylesheet_string_add(c->sheet,
lwc_string_ref(token->idata),
&open_snumber);
if (error != CSS_OK)
break;
consumeWhitespace(vector, ctx);
token = parserutils_vector_iterate(vector, ctx);
if ((token == NULL) ||
(token->type != CSS_TOKEN_STRING)) {
error = CSS_INVALID;
break;
}
error = css__stylesheet_string_add(c->sheet,
lwc_string_ref(token->idata),
&close_snumber);
if (error != CSS_OK)
break;
consumeWhitespace(vector, ctx);
error = CSS_FIRST_APPEND(QUOTES_STRING);
if (error != CSS_OK)
break;
error = css__stylesheet_style_append(result, open_snumber);
if (error != CSS_OK)
break;
error = css__stylesheet_style_append(result, close_snumber);
if (error != CSS_OK)
break;
first = false;
token = parserutils_vector_peek(vector, *ctx);
if (token == NULL || token->type != CSS_TOKEN_STRING)
break;
token = parserutils_vector_iterate(vector, ctx);
}
if (error == CSS_OK) {
/* AddTerminator */
error = css__stylesheet_style_append(result, QUOTES_NONE);
}
} else {
error = CSS_INVALID;
}
if (error != CSS_OK)
*ctx = orig_ctx;
return error;
}
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