/*
* 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"
/**
* Determine if a given font-family ident is reserved
*
* \param c Parsing context
* \param ident IDENT to consider
* \return True if IDENT is reserved, false otherwise
*/
static bool font_family_reserved(css_language *c, const css_token *ident)
{
bool match;
return (lwc_string_caseless_isequal(
ident->idata, c->strings[SERIF],
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
ident->idata, c->strings[SANS_SERIF],
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
ident->idata, c->strings[CURSIVE],
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
ident->idata, c->strings[FANTASY],
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
ident->idata, c->strings[MONOSPACE],
&match) == lwc_error_ok && match);
}
/**
* Convert a font-family token into a bytecode value
*
* \param c Parsing context
* \param token Token to consider
* \param first Whether the token is the first
* \return Bytecode value
*/
static css_code_t font_family_value(css_language *c, const css_token *token, bool first)
{
uint16_t value;
bool match;
if (token->type == CSS_TOKEN_IDENT) {
if ((lwc_string_caseless_isequal(
token->idata, c->strings[SERIF],
&match) == lwc_error_ok && match))
value = FONT_FAMILY_SERIF;
else if ((lwc_string_caseless_isequal(
token->idata, c->strings[SANS_SERIF],
&match) == lwc_error_ok && match))
value = FONT_FAMILY_SANS_SERIF;
else if ((lwc_string_caseless_isequal(
token->idata, c->strings[CURSIVE],
&match) == lwc_error_ok && match))
value = FONT_FAMILY_CURSIVE;
else if ((lwc_string_caseless_isequal(
token->idata, c->strings[FANTASY],
&match) == lwc_error_ok && match))
value = FONT_FAMILY_FANTASY;
else if ((lwc_string_caseless_isequal(
token->idata, c->strings[MONOSPACE],
&match) == lwc_error_ok && match))
value = FONT_FAMILY_MONOSPACE;
else
value = FONT_FAMILY_IDENT_LIST;
} else {
value = FONT_FAMILY_STRING;
}
return first ? buildOPV(CSS_PROP_FONT_FAMILY, 0, value) : value;
}
/**
* Parse font-family
*
* \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_font_family(css_language *c,
const parserutils_vector *vector, int *ctx,
css_style *result)
{
int orig_ctx = *ctx;
css_error error;
const css_token *token;
bool match;
/* [ IDENT+ | STRING ] [ ',' [ IDENT+ | STRING ] ]* | IDENT(inherit)
*
* In the case of IDENT+, any whitespace between tokens is collapsed to
* a single space
*
* \todo Mozilla makes the comma optional.
* Perhaps this is a quirk we should 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_FONT_FAMILY);
} else {
*ctx = orig_ctx;
error = css__comma_list_to_style(c, vector, ctx,
font_family_reserved, font_family_value,
result);
if (error != CSS_OK) {
*ctx = orig_ctx;
return error;
}
error = css__stylesheet_style_append(result, FONT_FAMILY_END);
}
if (error != CSS_OK) {
*ctx = orig_ctx;
return error;
}
return CSS_OK;
}