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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 text-decoration
*
* \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_text_decoration(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;
/* IDENT([ underline || overline || line-through || blink ])
* | IDENT (none, inherit) */
token = parserutils_vector_iterate(vector, ctx);
if ((token == NULL) || (token->type != CSS_TOKEN_IDENT) ) {
*ctx = orig_ctx;
return CSS_INVALID;
}
if (lwc_string_caseless_isequal(token->idata,
c->strings[INHERIT],
&match) == lwc_error_ok && match) {
error = css_stylesheet_style_inherit(result, CSS_PROP_TEXT_DECORATION);
} else if (lwc_string_caseless_isequal(token->idata,
c->strings[NONE],
&match) == lwc_error_ok && match) {
error = css__stylesheet_style_appendOPV(result,
CSS_PROP_TEXT_DECORATION, 0, TEXT_DECORATION_NONE);
} else {
uint16_t value = 0;
while (token != NULL) {
if ((lwc_string_caseless_isequal(
token->idata, c->strings[UNDERLINE],
&match) == lwc_error_ok && match)) {
if ((value & TEXT_DECORATION_UNDERLINE) == 0)
value |= TEXT_DECORATION_UNDERLINE;
else {
*ctx = orig_ctx;
return CSS_INVALID;
}
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[OVERLINE],
&match) == lwc_error_ok && match)) {
if ((value & TEXT_DECORATION_OVERLINE) == 0)
value |= TEXT_DECORATION_OVERLINE;
else {
*ctx = orig_ctx;
return CSS_INVALID;
}
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[LINE_THROUGH],
&match) == lwc_error_ok && match)) {
if ((value & TEXT_DECORATION_LINE_THROUGH) == 0)
value |= TEXT_DECORATION_LINE_THROUGH;
else {
*ctx = orig_ctx;
return CSS_INVALID;
}
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[BLINK],
&match) == lwc_error_ok && match)) {
if ((value & TEXT_DECORATION_BLINK) == 0)
value |= TEXT_DECORATION_BLINK;
else {
*ctx = orig_ctx;
return CSS_INVALID;
}
} else {
*ctx = orig_ctx;
return CSS_INVALID;
}
consumeWhitespace(vector, ctx);
token = parserutils_vector_peek(vector, *ctx);
if (token != NULL && token->type != CSS_TOKEN_IDENT)
break;
token = parserutils_vector_iterate(vector, ctx);
}
error = css__stylesheet_style_appendOPV(result,
CSS_PROP_TEXT_DECORATION, 0, value);
}
if (error != CSS_OK)
*ctx = orig_ctx;
return error;
}
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