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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 font-style
*
* \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_font_style(css_language *c,
const parserutils_vector *vector, int *ctx,
css_style **result)
{
int orig_ctx = *ctx;
css_error error;
const css_token *ident;
uint8_t flags = 0;
uint16_t value = 0;
uint32_t opv;
bool match;
/* IDENT (normal, italic, oblique, inherit) */
ident = parserutils_vector_iterate(vector, ctx);
if (ident == NULL || ident->type != CSS_TOKEN_IDENT) {
*ctx = orig_ctx;
return CSS_INVALID;
}
if ((lwc_string_caseless_isequal(
ident->idata, c->strings[INHERIT],
&match) == lwc_error_ok && match)) {
flags |= FLAG_INHERIT;
} else if ((lwc_string_caseless_isequal(
ident->idata, c->strings[NORMAL],
&match) == lwc_error_ok && match)) {
value = FONT_STYLE_NORMAL;
} else if ((lwc_string_caseless_isequal(
ident->idata, c->strings[ITALIC],
&match) == lwc_error_ok && match)) {
value = FONT_STYLE_ITALIC;
} else if ((lwc_string_caseless_isequal(
ident->idata, c->strings[OBLIQUE],
&match) == lwc_error_ok && match)) {
value = FONT_STYLE_OBLIQUE;
} else {
*ctx = orig_ctx;
return CSS_INVALID;
}
opv = buildOPV(CSS_PROP_FONT_STYLE, flags, value);
/* Allocate result */
error = css_stylesheet_style_create(c->sheet, sizeof(opv), result);
if (error != CSS_OK) {
*ctx = orig_ctx;
return error;
}
/* Copy the bytecode to it */
memcpy((*result)->bytecode, &opv, sizeof(opv));
return CSS_OK;
}
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