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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 "bytecode/bytecode.h"
#include "bytecode/opcodes.h"
#include "select/propset.h"
#include "select/propget.h"
#include "utils/utils.h"
#include "select/properties/properties.h"
#include "select/properties/helpers.h"
css_error cascade_content(uint32_t opv, css_style *style,
css_select_state *state)
{
uint16_t value = CSS_CONTENT_INHERIT;
css_computed_content_item *content = NULL;
uint32_t n_contents = 0;
if (isInherit(opv) == false) {
uint32_t v = getValue(opv);
if (v == CONTENT_NORMAL) {
value = CSS_CONTENT_NORMAL;
} else if (v == CONTENT_NONE) {
value = CSS_CONTENT_NONE;
} else {
value = CSS_CONTENT_SET;
while (v != CONTENT_NORMAL) {
lwc_string *he = *((lwc_string **) style->bytecode);
css_computed_content_item *temp;
temp = state->result->alloc(content,
(n_contents + 1) *
sizeof(css_computed_content_item),
state->result->pw);
if (temp == NULL) {
if (content != NULL) {
state->result->alloc(content,
0, state->result->pw);
}
return CSS_NOMEM;
}
content = temp;
switch (v & 0xff) {
case CONTENT_COUNTER:
advance_bytecode(style, sizeof(he));
content[n_contents].type =
CSS_COMPUTED_CONTENT_COUNTER;
content[n_contents].data.counter.name = he;
content[n_contents].data.counter.style = v >> CONTENT_COUNTER_STYLE_SHIFT;
break;
case CONTENT_COUNTERS:
{
lwc_string *sep;
advance_bytecode(style, sizeof(he));
sep = *((lwc_string **)
style->bytecode);
advance_bytecode(style, sizeof(sep));
content[n_contents].type =
CSS_COMPUTED_CONTENT_COUNTERS;
content[n_contents].data.counters.name = he;
content[n_contents].data.counters.sep = sep;
content[n_contents].data.counters.style = v >> CONTENT_COUNTERS_STYLE_SHIFT;
}
break;
case CONTENT_URI:
advance_bytecode(style, sizeof(he));
content[n_contents].type =
CSS_COMPUTED_CONTENT_URI;
content[n_contents].data.uri = he;
break;
case CONTENT_ATTR:
advance_bytecode(style, sizeof(he));
content[n_contents].type =
CSS_COMPUTED_CONTENT_ATTR;
content[n_contents].data.attr = he;
break;
case CONTENT_STRING:
advance_bytecode(style, sizeof(he));
content[n_contents].type =
CSS_COMPUTED_CONTENT_STRING;
content[n_contents].data.string = he;
break;
case CONTENT_OPEN_QUOTE:
content[n_contents].type =
CSS_COMPUTED_CONTENT_OPEN_QUOTE;
break;
case CONTENT_CLOSE_QUOTE:
content[n_contents].type =
CSS_COMPUTED_CONTENT_CLOSE_QUOTE;
break;
case CONTENT_NO_OPEN_QUOTE:
content[n_contents].type =
CSS_COMPUTED_CONTENT_NO_OPEN_QUOTE;
break;
case CONTENT_NO_CLOSE_QUOTE:
content[n_contents].type =
CSS_COMPUTED_CONTENT_NO_CLOSE_QUOTE;
break;
}
n_contents++;
v = *((uint32_t *) style->bytecode);
advance_bytecode(style, sizeof(v));
}
}
}
/* If we have some content, terminate the array with a blank entry */
if (n_contents > 0) {
css_computed_content_item *temp;
temp = state->result->alloc(content,
(n_contents + 1) * sizeof(css_computed_content_item),
state->result->pw);
if (temp == NULL) {
state->result->alloc(content, 0, state->result->pw);
return CSS_NOMEM;
}
content = temp;
content[n_contents].type = CSS_COMPUTED_CONTENT_NONE;
}
if (outranks_existing(getOpcode(opv), isImportant(opv), state,
isInherit(opv))) {
css_error error;
error = set_content(state->result, value, content);
if (error != CSS_OK && content != NULL)
state->result->alloc(content, 0, state->result->pw);
return error;
} else if (content != NULL) {
state->result->alloc(content, 0, state->result->pw);
}
return CSS_OK;
}
css_error set_content_from_hint(const css_hint *hint,
css_computed_style *style)
{
css_computed_content_item *item;
css_error error;
error = set_content(style, hint->status, hint->data.content);
for (item = hint->data.content; item != NULL &&
item->type != CSS_COMPUTED_CONTENT_NONE;
item++) {
switch (item->type) {
case CSS_COMPUTED_CONTENT_STRING:
lwc_string_unref(item->data.string);
break;
case CSS_COMPUTED_CONTENT_URI:
lwc_string_unref(item->data.uri);
break;
case CSS_COMPUTED_CONTENT_COUNTER:
lwc_string_unref(item->data.counter.name);
break;
case CSS_COMPUTED_CONTENT_COUNTERS:
lwc_string_unref(item->data.counters.name);
lwc_string_unref(item->data.counters.sep);
break;
case CSS_COMPUTED_CONTENT_ATTR:
lwc_string_unref(item->data.attr);
break;
default:
break;
}
}
if (error != CSS_OK && hint->data.content != NULL)
style->alloc(hint->data.content, 0, style->pw);
return error;
}
css_error initial_content(css_select_state *state)
{
return set_content(state->result, CSS_CONTENT_NORMAL, NULL);
}
css_error compose_content(const css_computed_style *parent,
const css_computed_style *child,
css_computed_style *result)
{
css_error error;
const css_computed_content_item *items = NULL;
uint8_t type = get_content(child, &items);
if ((child->uncommon == NULL && parent->uncommon != NULL) ||
type == CSS_CONTENT_INHERIT ||
(child->uncommon != NULL && result != child)) {
size_t n_items = 0;
css_computed_content_item *copy = NULL;
if ((child->uncommon == NULL && parent->uncommon != NULL) ||
type == CSS_CONTENT_INHERIT) {
type = get_content(parent, &items);
}
if (type == CSS_CONTENT_SET) {
const css_computed_content_item *i;
for (i = items; i->type != CSS_COMPUTED_CONTENT_NONE;
i++)
n_items++;
copy = result->alloc(NULL, (n_items + 1) *
sizeof(css_computed_content_item),
result->pw);
if (copy == NULL)
return CSS_NOMEM;
memcpy(copy, items, (n_items + 1) *
sizeof(css_computed_content_item));
}
error = set_content(result, type, copy);
if (error != CSS_OK && copy != NULL)
result->alloc(copy, 0, result->pw);
return error;
}
return CSS_OK;
}
uint32_t destroy_content(void *bytecode)
{
uint32_t consumed = sizeof(uint32_t);
uint32_t value = getValue(*((uint32_t*)bytecode));
bytecode = ((uint8_t*)bytecode) + sizeof(uint32_t);
if (value == CONTENT_NONE || value == CONTENT_NORMAL)
return sizeof(uint32_t);
while (value != 0) {
switch (value & 0xff) {
case CONTENT_COUNTERS: {
lwc_string *str = *(lwc_string **)bytecode;
lwc_string_unref(str);
consumed += sizeof(lwc_string*);
bytecode = (uint8_t*)bytecode + sizeof(lwc_string *);
}
case CONTENT_STRING:
case CONTENT_URI:
case CONTENT_COUNTER:
case CONTENT_ATTR: {
lwc_string *str = *(lwc_string **)bytecode;
lwc_string_unref(str);
consumed += sizeof(lwc_string*);
bytecode = (uint8_t*)bytecode + sizeof(lwc_string *);
}
}
consumed += sizeof(uint32_t);
value = *((uint32_t*)bytecode);
bytecode = ((uint8_t*)bytecode) + sizeof(uint32_t);
}
return consumed;
}
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