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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*/
/** \file
* CSS ruleset parsing.
*
* This file implements the last stage of CSS parsing. It converts trees of
* struct css_node produced by the parser into struct style, and adds them to a
* stylesheet.
*/
#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#define CSS_INTERNALS
#define NDEBUG
#include "netsurf/css/css.h"
#include "netsurf/content/content.h"
#include "netsurf/desktop/options.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/url.h"
#include "netsurf/utils/utils.h"
static bool css_compare_selectors(const struct css_selector *n0,
const struct css_selector *n1);
static int parse_length(struct css_length * const length,
const struct css_node * const v, bool non_negative);
static colour parse_colour(const struct css_node * const v);
static void parse_background(struct css_style * const s, const struct css_node * v);
static void parse_background_attachment(struct css_style * const s, const struct css_node * const v);
static void parse_background_color(struct css_style * const s, const struct css_node * const v);
static void parse_background_image(struct css_style * const s, const struct css_node * const v);
static void parse_background_position(struct css_style * const s, const struct css_node * const v);
static void parse_background_repeat(struct css_style * const s, const struct css_node * const v);
static void parse_border(struct css_style * const s, const struct css_node * v);
static void parse_border_bottom(struct css_style * const s, const struct css_node * v);
static void parse_border_bottom_color(struct css_style * const s, const struct css_node * v);
static void parse_border_bottom_style(struct css_style * const s, const struct css_node * v);
static void parse_border_bottom_width(struct css_style * const s, const struct css_node * v);
static void parse_border_color(struct css_style * const s, const struct css_node * v);
static void parse_border_color_side(struct css_style * const s,
const struct css_node * const v, unsigned int i);
static void parse_border_left(struct css_style * const s, const struct css_node * v);
static void parse_border_left_color(struct css_style * const s, const struct css_node * v);
static void parse_border_left_style(struct css_style * const s, const struct css_node * v);
static void parse_border_left_width(struct css_style * const s, const struct css_node * v);
static void parse_border_right(struct css_style * const s, const struct css_node * v);
static void parse_border_right_color(struct css_style * const s, const struct css_node * v);
static void parse_border_right_style(struct css_style * const s, const struct css_node * v);
static void parse_border_right_width(struct css_style * const s, const struct css_node * v);
static void parse_border_side(struct css_style * const s,
const struct css_node *v, unsigned int i);
static void parse_border_style(struct css_style * const s, const struct css_node * v);
static void parse_border_style_side(struct css_style * const s,
const struct css_node * const v, unsigned int i);
static void parse_border_top(struct css_style * const s, const struct css_node * v);
static void parse_border_top_color(struct css_style * const s, const struct css_node * v);
static void parse_border_top_style(struct css_style * const s, const struct css_node * v);
static void parse_border_top_width(struct css_style * const s, const struct css_node * v);
static void parse_border_width(struct css_style * const s, const struct css_node * v);
static void parse_border_width_side(struct css_style * const s,
const struct css_node * const v, unsigned int i);
static void parse_clear(struct css_style * const s, const struct css_node * const v);
static void parse_color(struct css_style * const s, const struct css_node * const v);
static void parse_cursor(struct css_style * const s, const struct css_node * v);
static void parse_display(struct css_style * const s, const struct css_node * const v);
static void parse_float(struct css_style * const s, const struct css_node * const v);
static void parse_font(struct css_style * const s, const struct css_node * v);
static void parse_font_family(struct css_style * const s, const struct css_node * v);
static void parse_font_size(struct css_style * const s, const struct css_node * const v);
static void parse_font_style(struct css_style * const s, const struct css_node * const v);
static void parse_font_variant(struct css_style * const s, const struct css_node * const v);
static void parse_font_weight(struct css_style * const s, const struct css_node * const v);
static void parse_height(struct css_style * const s, const struct css_node * const v);
static void parse_line_height(struct css_style * const s, const struct css_node * const v);
static void parse_margin(struct css_style * const s, const struct css_node * const v);
static void parse_margin_bottom(struct css_style * const s, const struct css_node * const v);
static void parse_margin_left(struct css_style * const s, const struct css_node * const v);
static void parse_margin_right(struct css_style * const s, const struct css_node * const v);
static void parse_margin_top(struct css_style * const s, const struct css_node * const v);
static void parse_margin_side(struct css_style * const s, const struct css_node * const v,
unsigned int i);
static void parse_padding(struct css_style * const s, const struct css_node * const v);
static void parse_padding_bottom(struct css_style * const s, const struct css_node * const v);
static void parse_padding_left(struct css_style * const s, const struct css_node * const v);
static void parse_padding_right(struct css_style * const s, const struct css_node * const v);
static void parse_padding_top(struct css_style * const s, const struct css_node * const v);
static void parse_padding_side(struct css_style * const s, const struct css_node * const v,
unsigned int i);
static void parse_text_align(struct css_style * const s, const struct css_node * const v);
static void parse_text_decoration(struct css_style * const s, const struct css_node * const v);
static void parse_text_indent(struct css_style * const s, const struct css_node * const v);
static void parse_text_transform(struct css_style * const s, const struct css_node * const v);
static void parse_visibility(struct css_style * const s, const struct css_node * const v);
static void parse_width(struct css_style * const s, const struct css_node * const v);
static void parse_white_space(struct css_style * const s, const struct css_node * const v);
static css_text_decoration css_text_decoration_parse(const char * const s,
int length);
/** An entry in css_property_table. */
struct css_property_entry {
const char name[25];
void (*parse) (struct css_style * const s,
const struct css_node * const v);
};
/** Table of property parsers. MUST be sorted by property name. */
static const struct css_property_entry css_property_table[] = {
{ "background", parse_background },
{ "background-attachment", parse_background_attachment },
{ "background-color", parse_background_color },
{ "background-image", parse_background_image },
{ "background-position", parse_background_position },
{ "background-repeat", parse_background_repeat },
{ "border", parse_border },
{ "border-bottom", parse_border_bottom },
{ "border-bottom-color", parse_border_bottom_color },
{ "border-bottom-style", parse_border_bottom_style },
{ "border-bottom-width", parse_border_bottom_width },
{ "border-color", parse_border_color },
{ "border-left", parse_border_left },
{ "border-left-color", parse_border_left_color },
{ "border-left-style", parse_border_left_style },
{ "border-left-width", parse_border_left_width },
{ "border-right", parse_border_right },
{ "border-right-color", parse_border_right_color },
{ "border-right-style", parse_border_right_style },
{ "border-right-width", parse_border_right_width },
{ "border-style", parse_border_style },
{ "border-top", parse_border_top },
{ "border-top-color", parse_border_top_color },
{ "border-top-style", parse_border_top_style },
{ "border-top-width", parse_border_top_width },
{ "border-width", parse_border_width },
{ "clear", parse_clear },
{ "color", parse_color },
{ "cursor", parse_cursor },
{ "display", parse_display },
{ "float", parse_float },
{ "font", parse_font },
{ "font-family", parse_font_family },
{ "font-size", parse_font_size },
{ "font-style", parse_font_style },
{ "font-variant", parse_font_variant },
{ "font-weight", parse_font_weight },
{ "height", parse_height },
{ "line-height", parse_line_height },
{ "margin", parse_margin },
{ "margin-bottom", parse_margin_bottom },
{ "margin-left", parse_margin_left },
{ "margin-right", parse_margin_right },
{ "margin-top", parse_margin_top },
{ "padding", parse_padding },
{ "padding-bottom", parse_padding_bottom },
{ "padding-left", parse_padding_left },
{ "padding-right", parse_padding_right },
{ "padding-top", parse_padding_top },
{ "text-align", parse_text_align },
{ "text-decoration", parse_text_decoration },
{ "text-indent", parse_text_indent },
{ "text-transform", parse_text_transform },
{ "visibility", parse_visibility },
{ "white-space", parse_white_space },
{ "width", parse_width },
};
/** An entry in css_colour_table. */
struct css_colour_entry {
const char name[12];
colour col;
};
/* Table of standard colour names. MUST be sorted by colour name.
* Note: colour is 0xbbggrr. */
static const struct css_colour_entry css_colour_table[] = {
{ "aqua", 0xffff00 },
{ "black", 0x000000 },
{ "blue", 0xff0000 },
{ "fuchsia", 0xff00ff },
{ "gray", 0x808080 },
{ "green", 0x008000 },
{ "lime", 0x00ff00 },
{ "maroon", 0x000080 },
{ "navy", 0x800000 },
{ "olive", 0x008080 },
{ "orange", 0x00a5ff },
{ "purple", 0x800080 },
{ "red", 0x0000ff },
{ "silver", 0xc0c0c0 },
{ "teal", 0x808000 },
{ "transparent", TRANSPARENT },
{ "white", 0xffffff },
{ "yellow", 0x00ffff },
};
/** An entry in css_font_size_table. */
struct css_font_size_entry {
const char name[10];
float size;
};
/** Table of font sizes. MUST be sorted by name. */
#define SIZE_FACTOR 1.2
static const struct css_font_size_entry css_font_size_table[] = {
{ "large", 1.0 * SIZE_FACTOR },
{ "medium", 1.0 },
{ "small", 1.0 / SIZE_FACTOR },
{ "x-large", 1.0 * SIZE_FACTOR * SIZE_FACTOR },
{ "x-small", 1.0 / (SIZE_FACTOR * SIZE_FACTOR) },
{ "xx-large", 1.0 * SIZE_FACTOR * SIZE_FACTOR * SIZE_FACTOR },
{ "xx-small", 1.0 / (SIZE_FACTOR * SIZE_FACTOR * SIZE_FACTOR) },
};
/**
* Add a ruleset to a stylesheet.
*/
void css_add_ruleset(struct content *c,
struct css_selector *selector,
struct css_node *declaration)
{
bool found;
struct css_stylesheet *stylesheet = c->data.css.css;
struct css_selector *n, *sel, *next_sel, *prev;
struct css_style *style;
unsigned int hash;
for (sel = selector; sel != 0; sel = next_sel) {
next_sel = sel->next;
/* check if this selector is already present */
found = false;
prev = 0;
hash = css_hash(sel->data, sel->data_length);
/* selectors are ordered by specificity in the hash chain */
for (n = stylesheet->rule[hash];
n && n->specificity < sel->specificity;
n = n->next)
prev = n;
for ( ; n && n->specificity == sel->specificity;
n = n->next) {
prev = n;
if (css_compare_selectors(sel, n)) {
found = true;
break;
}
}
if (!found) {
/* not present: construct a new struct css_style */
LOG(("constructing new style"));
style = malloc(sizeof *style);
if (!style) {
/** \todo report to user */
css_free_selector(sel);
return;
}
memcpy(style, &css_empty_style, sizeof(*style));
sel->style = style;
sel->next = n;
if (prev)
prev->next = sel;
else
stylesheet->rule[hash] = sel;
c->size += sizeof(*style);
} else {
/* already exists: augument existing style */
LOG(("augumenting existing style"));
style = n->style;
sel->next = 0;
css_free_selector(sel);
}
/* fill in the declarations */
css_add_declarations(style, declaration);
}
}
/**
* Add declarations to a style.
*/
void css_add_declarations(struct css_style *style, struct css_node *declaration)
{
char name[20];
struct css_node *n;
for (n = declaration; n != 0; n = n->next) {
struct css_property_entry *p;
assert(n->type == CSS_NODE_DECLARATION && n->data && n->value);
if (19 < n->data_length)
continue;
strncpy(name, n->data, n->data_length);
name[n->data_length] = 0;
p = bsearch(name, css_property_table,
sizeof css_property_table /
sizeof css_property_table[0],
sizeof css_property_table[0],
(int (*)(const void *, const void *))
strcasecmp);
if (p == 0)
continue;
p->parse(style, n->value);
}
}
/**
* Compare two css_selectors.
*/
bool css_compare_selectors(const struct css_selector *n0,
const struct css_selector *n1)
{
struct css_selector *m0, *m1;
unsigned int count0 = 0, count1 = 0;
/* compare element name */
if (!((n0->data == 0 && n1->data == 0) ||
(n0->data != 0 && n1->data != 0 &&
n0->data_length == n1->data_length &&
strncmp(n0->data, n1->data, n0->data_length) == 0)))
return false;
if (n0->comb != n1->comb)
return false;
/* compare classes and ids */
for (m0 = n0->detail; m0 != 0; m0 = m0->next)
count0++;
for (m1 = n1->detail; m1 != 0; m1 = m1->next)
count1++;
if (count0 != count1)
return false;
for (m0 = n0->detail; m0 != 0; m0 = m0->next) {
bool found = false;
for (m1 = n1->detail; m1 != 0; m1 = m1->next) {
/* TODO: should this be case sensitive for IDs? */
if (m0->type == m1->type &&
m0->data_length == m1->data_length &&
strncasecmp(m0->data, m1->data,
m0->data_length) == 0 &&
((m0->data2 == 0 && m1->data2 == 0) ||
(m0->data2_length == m1->data2_length &&
strncasecmp(m0->data2, m1->data2,
m0->data2_length) == 0))) {
found = true;
break;
}
}
if (!found)
return false;
}
/* compare ancestors */
if (n0->comb == CSS_COMB_NONE)
return true;
return css_compare_selectors(n0->combiner, n1->combiner);
}
/*
* Property parsers.
*/
/* TODO: consider CSS_NODE_NUMBER whenever a value may be '0' */
int parse_length(struct css_length * const length,
const struct css_node * const v, bool non_negative)
{
css_unit u;
float value;
int num_length;
if (v->type == CSS_NODE_NUMBER && atof(v->data) == 0) {
length->unit = CSS_UNIT_EM;
length->value = 0;
return 0;
}
if (v->type != CSS_NODE_DIMENSION)
return 1;
num_length = strspn(v->data, "0123456789+-.");
u = css_unit_parse(v->data + num_length, v->data_length - num_length);
if (u == CSS_UNIT_UNKNOWN)
return 1;
value = atof(v->data);
if (non_negative && value < 0)
return 1;
length->unit = u;
length->value = value;
return 0;
}
colour named_colour(const char *name)
{
struct css_colour_entry *col;
unsigned int r, g, b;
col = bsearch(name, css_colour_table,
sizeof css_colour_table / sizeof css_colour_table[0],
sizeof css_colour_table[0],
(int (*)(const void *, const void *)) strcasecmp);
if (col == 0) {
/* A common error is the omission of the '#' from the
* start of a colour specified in #rrggbb format.
* This attempts to detect and recover from this.
*/
if (strlen(name) == 6 &&
sscanf(name, "%2x%2x%2x", &r, &g, &b) == 3) {
return (b << 16) | (g << 8) | r;
}
else
return TRANSPARENT;
}
return col->col;
}
colour parse_colour(const struct css_node * const v)
{
colour c = CSS_COLOR_NONE;
unsigned int r, g, b;
struct css_colour_entry *col;
char colour_name[12];
const char *u;
char sb[5];
int i;
switch (v->type) {
case CSS_NODE_HASH:
if (v->data_length == 4) {
if (sscanf(v->data + 1, "%1x%1x%1x", &r, &g, &b) == 3)
c = (b << 20) | (b << 16) | (g << 12) | (g << 8) | (r << 4) | r;
} else if (v->data_length == 7) {
if (sscanf(v->data + 1, "%2x%2x%2x", &r, &g, &b) == 3)
c = (b << 16) | (g << 8) | r;
}
break;
case CSS_NODE_FUNCTION:
for (u = v->data+4;
*u == ' ' || *u == '\t' || *u == '\r' ||
*u == '\n' || *u == '\f';
u++)
;
/* extract r */
for (i=0; *u != ',' && i != 4; i++) {
sb[i] = *u++;
}
sb[i] = 0;
u++;
if (sb[i-1] == '%') {
sb[i-1] = 0;
r = (int)((float)(atoi(sb) / 100.0) * 255);
}
else
r = atoi(sb);
/* extract g */
for (i=0; *u != ',' && i != 4; i++) {
sb[i] = *u++;
}
sb[i] = 0;
u++;
if (sb[i-1] == '%') {
sb[i-1] = 0;
g = (int)((float)(atoi(sb) / 100.0) * 255);
}
else
g = atoi(sb);
/* extract b */
for (i=0; *u != ')' && i != 4; i++) {
sb[i] = *u++;
}
sb[i] = 0;
if (sb[i-1] == '%') {
sb[i-1] = 0;
b = (int)((float)(atoi(sb) / 100.0) * 255);
}
else
b = atoi(sb);
/* calculate c, ensuring that r,g,b are in range */
c = ((b > 255 ? 255 : b) << 16) |
((g > 255 ? 255 : g) << 8) |
(r > 255 ? 255 : r);
break;
case CSS_NODE_IDENT:
if (11 < v->data_length)
break;
strncpy(colour_name, v->data, v->data_length);
colour_name[v->data_length] = 0;
col = bsearch(colour_name, css_colour_table,
sizeof css_colour_table /
sizeof css_colour_table[0],
sizeof css_colour_table[0],
(int (*)(const void *, const void *))
strcasecmp);
if (col != 0)
c = col->col;
break;
default:
break;
}
return c;
}
void parse_background(struct css_style * const s, const struct css_node * v)
{
colour c;
for (; v; v = v->next) {
switch (v->type) {
case CSS_NODE_HASH:
case CSS_NODE_FUNCTION:
case CSS_NODE_IDENT:
c = parse_colour(v);
if (c != CSS_COLOR_NONE)
s->background_color = c;
break;
default:
break;
}
}
}
void parse_background_attachment(struct css_style * const s, const struct css_node * const v)
{
css_background_attachment z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_background_attachment_parse(v->data, v->data_length);
if (z != CSS_BACKGROUND_ATTACHMENT_UNKNOWN)
s->background_attachment = z;
}
void parse_background_color(struct css_style * const s, const struct css_node * const v)
{
colour c = parse_colour(v);
if (c != CSS_COLOR_NONE)
s->background_color = c;
}
void parse_background_image(struct css_style * const s, const struct css_node * const v)
{
bool string = false;
const char *u;
char *t, *url;
s->background_image.uri = 0;
switch (v->type) {
case CSS_NODE_URI:
for (u = v->data + 4;
*u == ' ' || *u == '\t' || *u == '\r' ||
*u == '\n' || *u == '\f';
u++)
;
if (*u == '\'' || *u == '"') {
string = true;
u++;
}
url = strndup(u, v->data_length - (u - v->data));
if (!url) {
return;
}
for (t = url + strlen(url) - 2;
*t == ' ' || *t == '\t' || *t == '\r' ||
*t == '\n' || *t == '\f';
t--)
;
if (string)
*t = 0;
else
*(t + 1) = 0;
/* for inline style attributes, the stylesheet
* content is the parent HTML content
*/
if (v->stylesheet->type == CONTENT_HTML)
s->background_image.uri = url_join(url, v->stylesheet->data.html.base_url);
else
s->background_image.uri = url_join(url, v->stylesheet->url);
free(url);
if (!s->background_image.uri) return;
s->background_image.type = CSS_BACKGROUND_IMAGE_URI;
break;
case CSS_NODE_STRING:
url = strndup(v->data, v->data_length);
if (!url)
return;
s->background_image.uri = url_join(url, v->stylesheet->url);
free(url);
if (!s->background_image.uri) return;
s->background_image.type = CSS_BACKGROUND_IMAGE_URI;
break;
case CSS_NODE_IDENT:
if (v->data_length == 7 && strncasecmp(v->data, "inherit", 7) == 0)
s->background_image.type = CSS_BACKGROUND_IMAGE_INHERIT;
else if (v->data_length == 4 && strncasecmp(v->data, "none", 4) == 0)
s->background_image.type = CSS_BACKGROUND_IMAGE_NONE;
break;
default:
break;
}
}
void parse_background_position(struct css_style * const s, const struct css_node * v)
{
struct css_node *w = v->next;
if (!w) { /* only one value specified */
if (v->type == CSS_NODE_IDENT) {
if (v->data_length == 3 && strncasecmp(v->data, "top", 3) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 0.0;
}
else if (v->data_length == 4 && strncasecmp(v->data, "left", 4) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 0.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if (v->data_length == 5 && strncasecmp(v->data, "right", 5) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 100.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "bottom", 6) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 100.0;
}
}
else if (v->type == CSS_NODE_PERCENTAGE) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = atof(v->data);
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if (v->type == CSS_NODE_DIMENSION) {
if (parse_length(&s->background_position.horz.value.length, v, false) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_LENGTH;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
}
}
/* two values specified */
if (v->type == CSS_NODE_IDENT && w->type == CSS_NODE_IDENT) {
/* both keywords */
if ((v->data_length == 3 && strncasecmp(v->data, "top", 3) == 0 && w->data_length == 4 && strncasecmp(w->data, "left", 4) == 0) ||
(v->data_length == 4 && strncasecmp(v->data, "left", 4) == 0 && w->data_length == 3 && strncasecmp(w->data, "top", 3) == 0)) {
/* top left / left top */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 0.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 0.0;
}
else if ((v->data_length == 3 && strncasecmp(v->data, "top", 3) == 0 && w->data_length == 6 && strncasecmp(w->data, "center", 6) == 0) ||
(v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0 && w->data_length == 3 && strncasecmp(w->data, "top", 3) == 0)) {
/* top center / center top */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 0.0;
}
else if ((v->data_length == 3 && strncasecmp(v->data, "top", 3) == 0 && w->data_length == 5 && strncasecmp(w->data, "right", 5) == 0) ||
(v->data_length == 5 && strncasecmp(v->data, "right", 5) == 0 && w->data_length == 3 && strncasecmp(w->data, "top", 3) == 0)) {
/* top right / right top */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 100.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 0.0;
}
else if ((v->data_length == 4 && strncasecmp(v->data, "left", 4) == 0 && w->data_length == 6 && strncasecmp(w->data, "center", 6) == 0) ||
(v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0 && w->data_length == 4 && strncasecmp(w->data, "left", 4) == 0)) {
/* left center / center left */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 0.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0 && w->data_length == 6 && strncasecmp(w->data, "center", 6) == 0) {
/* center center */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if ((v->data_length == 5 && strncasecmp(v->data, "right", 5) == 0 && w->data_length == 6 && strncasecmp(w->data, "center", 6) == 0) ||
(v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0 && w->data_length == 5 && strncasecmp(w->data, "right", 5) == 0)) {
/* right center / center right */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 100.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
else if ((v->data_length == 6 && strncasecmp(v->data, "bottom", 6) == 0 && w->data_length == 4 && strncasecmp(w->data, "left", 4) == 0) ||
(v->data_length == 4 && strncasecmp(v->data, "left", 4) == 0 && w->data_length == 6 && strncasecmp(w->data, "bottom", 6) == 0)) {
/* bottom left / left bottom */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 0.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 100.0;
}
else if ((v->data_length == 6 && strncasecmp(v->data, "bottom", 6) == 0 && w->data_length == 6 && strncasecmp(w->data, "center", 6) == 0) ||
(v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0 && w->data_length == 6 && strncasecmp(w->data, "bottom", 6) == 0)) {
/* bottom center / center bottom */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 100.0;
}
else if ((v->data_length == 6 && strncasecmp(v->data, "bottom", 6) == 0 && w->data_length == 5 && strncasecmp(w->data, "right", 5) == 0) ||
(v->data_length == 5 && strncasecmp(v->data, "right", 5) == 0 && w->data_length == 6 && strncasecmp(w->data, "bottom", 6) == 0)) {
/* bottom right / right bottom */
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 100.0;
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 100.0;
}
}
else {
switch (v->type) { /* horizontal value */
case CSS_NODE_IDENT:
if (v->data_length == 7 && strncasecmp(v->data, "inherit", 7) == 0)
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_INHERIT;
else if (v->data_length == 4 && strncasecmp(v->data, "left", 4) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 0.0;
}
else if (v->data_length == 5 && strncasecmp(v->data, "right", 5) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 100.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0) {
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = 50.0;
}
break;
case CSS_NODE_PERCENTAGE:
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.horz.value.percent = atof(v->data);
break;
case CSS_NODE_DIMENSION:
if (parse_length(&s->background_position.horz.value.length, v, false) == 0)
s->background_position.horz.pos = CSS_BACKGROUND_POSITION_LENGTH;
break;
default:
break;
}
switch (w->type) { /* vertical value */
case CSS_NODE_IDENT:
if (v->data_length == 7 && strncasecmp(v->data, "inherit", 7) == 0)
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_INHERIT;
else if (v->data_length == 3 && strncasecmp(v->data, "top", 3) == 0) {
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 0.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "bottom", 6) == 0) {
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 100.0;
}
else if (v->data_length == 6 && strncasecmp(v->data, "center", 6) == 0) {
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = 50.0;
}
break;
case CSS_NODE_PERCENTAGE:
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_PERCENT;
s->background_position.vert.value.percent = atof(v->data);
break;
case CSS_NODE_DIMENSION:
if (parse_length(&s->background_position.vert.value.length, v, false) == 0)
s->background_position.vert.pos = CSS_BACKGROUND_POSITION_LENGTH;
break;
default:
break;
}
}
}
void parse_background_repeat(struct css_style * const s, const struct css_node * const v)
{
css_background_repeat z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_background_repeat_parse(v->data, v->data_length);
if (z != CSS_BACKGROUND_REPEAT_UNKNOWN)
s->background_repeat = z;
}
void parse_border_width(struct css_style * const s,
const struct css_node * const v)
{
unsigned int count = 0;
const struct css_node *w;
for (w = v; w; w = w->next, count++)
if (!((w->type == CSS_NODE_IDENT && (
(w->data_length == 7 &&
strncasecmp(w->data, "inherit", 7) == 0) ||
(w->data_length == 4 &&
strncasecmp(w->data, "thin", 4) == 0) ||
(w->data_length == 6 &&
strncasecmp(w->data, "medium", 6) == 0) ||
(w->data_length == 5 &&
strncasecmp(w->data, "thick", 5) == 0))) ||
(w->type == CSS_NODE_DIMENSION) ||
(w->type == CSS_NODE_NUMBER)))
return;
w = v;
switch (count) {
case 1: /* one value: applies to all sides */
parse_border_width_side(s, w, TOP);
parse_border_width_side(s, w, RIGHT);
parse_border_width_side(s, w, BOTTOM);
parse_border_width_side(s, w, LEFT);
break;
case 2: /* (top and bottom), (left and right) */
parse_border_width_side(s, w, TOP);
parse_border_width_side(s, w, BOTTOM);
w = w->next;
parse_border_width_side(s, w, RIGHT);
parse_border_width_side(s, w, LEFT);
break;
case 3: /* top, (left and right), bottom */
parse_border_width_side(s, w, TOP);
w = w->next;
parse_border_width_side(s, w, RIGHT);
parse_border_width_side(s, w, LEFT);
w = w->next;
parse_border_width_side(s, w, BOTTOM);
break;
case 4: /* top, right, bottom, left */
parse_border_width_side(s, w, TOP);
w = w->next;
parse_border_width_side(s, w, RIGHT);
w = w->next;
parse_border_width_side(s, w, BOTTOM);
w = w->next;
parse_border_width_side(s, w, LEFT);
break;
}
}
#define PARSE_BORDER_WIDTH(side, z) \
void parse_border_ ## side ## _width(struct css_style * const s, \
const struct css_node * const v) \
{ \
if (v->next != 0) \
return; \
parse_border_width_side(s, v, z); \
}
PARSE_BORDER_WIDTH(top, TOP)
PARSE_BORDER_WIDTH(right, RIGHT)
PARSE_BORDER_WIDTH(bottom, BOTTOM)
PARSE_BORDER_WIDTH(left, LEFT)
void parse_border_width_side(struct css_style * const s,
const struct css_node * const v, unsigned int i)
{
if (v->type == CSS_NODE_IDENT) {
if (v->data_length == 7 &&
strncasecmp(v->data, "inherit", 7) == 0)
s->border[i].width.width = CSS_BORDER_WIDTH_INHERIT;
else if (v->data_length == 4 &&
strncasecmp(v->data, "thin", 4) == 0) {
s->border[i].width.width = CSS_BORDER_WIDTH_LENGTH;
s->border[i].width.value.value = 1;
s->border[i].width.value.unit = CSS_UNIT_PX;
} else if (v->data_length == 6 &&
strncasecmp(v->data, "medium", 6) == 0) {
s->border[i].width.width = CSS_BORDER_WIDTH_LENGTH;
s->border[i].width.value.value = 2;
s->border[i].width.value.unit = CSS_UNIT_PX;
} else if (v->data_length == 5 &&
strncasecmp(v->data, "thick", 5) == 0) {
s->border[i].width.width = CSS_BORDER_WIDTH_LENGTH;
s->border[i].width.value.value = 4;
s->border[i].width.value.unit = CSS_UNIT_PX;
}
} else if ((v->type == CSS_NODE_DIMENSION ||
v->type == CSS_NODE_NUMBER) &&
parse_length(&s->border[i].width.value, v, true) == 0)
s->border[i].width.width = CSS_BORDER_WIDTH_LENGTH;
}
void parse_border_color(struct css_style * const s,
const struct css_node * const v)
{
unsigned int count = 0;
const struct css_node *w;
for (w = v; w; w = w->next, count++)
if (!(w->type == CSS_NODE_HASH ||
w->type == CSS_NODE_FUNCTION ||
w->type == CSS_NODE_IDENT))
return;
w = v;
switch (count) {
case 1: /* one value: applies to all sides */
parse_border_color_side(s, w, TOP);
parse_border_color_side(s, w, RIGHT);
parse_border_color_side(s, w, BOTTOM);
parse_border_color_side(s, w, LEFT);
break;
case 2: /* (top and bottom), (left and right) */
parse_border_color_side(s, w, TOP);
parse_border_color_side(s, w, BOTTOM);
w = w->next;
parse_border_color_side(s, w, RIGHT);
parse_border_color_side(s, w, LEFT);
break;
case 3: /* top, (left and right), bottom */
parse_border_color_side(s, w, TOP);
w = w->next;
parse_border_color_side(s, w, RIGHT);
parse_border_color_side(s, w, LEFT);
w = w->next;
parse_border_color_side(s, w, BOTTOM);
break;
case 4: /* top, right, bottom, left */
parse_border_color_side(s, w, TOP);
w = w->next;
parse_border_color_side(s, w, RIGHT);
w = w->next;
parse_border_color_side(s, w, BOTTOM);
w = w->next;
parse_border_color_side(s, w, LEFT);
break;
}
}
#define PARSE_BORDER_COLOR(side, z) \
void parse_border_ ## side ## _color(struct css_style * const s, \
const struct css_node * const v) \
{ \
if (v->next != 0) \
return; \
parse_border_color_side(s, v, z); \
}
PARSE_BORDER_COLOR(top, TOP)
PARSE_BORDER_COLOR(right, RIGHT)
PARSE_BORDER_COLOR(bottom, BOTTOM)
PARSE_BORDER_COLOR(left, LEFT)
void parse_border_color_side(struct css_style * const s,
const struct css_node * const v, unsigned int i)
{
colour c = parse_colour(v);
if (c != CSS_COLOR_NONE)
s->border[i].color = c;
}
void parse_border_style(struct css_style * const s,
const struct css_node * const v)
{
unsigned int count = 0;
const struct css_node *w;
for (w = v; w; w = w->next, count++)
if (w->type != CSS_NODE_IDENT)
return;
w = v;
switch (count) {
case 1: /* one value: applies to all sides */
parse_border_style_side(s, w, TOP);
parse_border_style_side(s, w, RIGHT);
parse_border_style_side(s, w, BOTTOM);
parse_border_style_side(s, w, LEFT);
break;
case 2: /* (top and bottom), (left and right) */
parse_border_style_side(s, w, TOP);
parse_border_style_side(s, w, BOTTOM);
w = w->next;
parse_border_style_side(s, w, RIGHT);
parse_border_style_side(s, w, LEFT);
break;
case 3: /* top, (left and right), bottom */
parse_border_style_side(s, w, TOP);
w = w->next;
parse_border_style_side(s, w, RIGHT);
parse_border_style_side(s, w, LEFT);
w = w->next;
parse_border_style_side(s, w, BOTTOM);
break;
case 4: /* top, right, bottom, left */
parse_border_style_side(s, w, TOP);
w = w->next;
parse_border_style_side(s, w, RIGHT);
w = w->next;
parse_border_style_side(s, w, BOTTOM);
w = w->next;
parse_border_style_side(s, w, LEFT);
break;
}
}
#define PARSE_BORDER_STYLE(side, z) \
void parse_border_ ## side ## _style(struct css_style * const s, \
const struct css_node * const v) \
{ \
if (v->next != 0 || v->type != CSS_NODE_IDENT) \
return; \
parse_border_style_side(s, v, z); \
}
PARSE_BORDER_STYLE(top, TOP)
PARSE_BORDER_STYLE(right, RIGHT)
PARSE_BORDER_STYLE(bottom, BOTTOM)
PARSE_BORDER_STYLE(left, LEFT)
void parse_border_style_side(struct css_style * const s,
const struct css_node * const v, unsigned int i)
{
css_border_style z = css_border_style_parse(v->data, v->data_length);
if (z != CSS_BORDER_STYLE_UNKNOWN)
s->border[i].style = z;
}
void parse_border(struct css_style * const s,
const struct css_node * const v)
{
parse_border_side(s, v, TOP);
parse_border_side(s, v, RIGHT);
parse_border_side(s, v, BOTTOM);
parse_border_side(s, v, LEFT);
}
#define PARSE_BORDER(side, z) \
void parse_border_ ## side(struct css_style * const s, \
const struct css_node * const v) \
{ \
parse_border_side(s, v, z); \
}
PARSE_BORDER(top, TOP)
PARSE_BORDER(right, RIGHT)
PARSE_BORDER(bottom, BOTTOM)
PARSE_BORDER(left, LEFT)
void parse_border_side(struct css_style * const s,
const struct css_node *v, unsigned int i)
{
colour c;
css_border_style z;
if (!v->next && v->type == CSS_NODE_IDENT &&
v->data_length == 7 &&
strncasecmp(v->data, "inherit", 7) == 0) {
s->border[i].color = CSS_COLOR_INHERIT;
s->border[i].width.width = CSS_BORDER_WIDTH_INHERIT;
s->border[i].style = CSS_BORDER_STYLE_INHERIT;
return;
}
for (; v; v = v->next) {
c = parse_colour(v);
if (c != CSS_COLOR_NONE) {
s->border[i].color = c;
continue;
}
if (v->type == CSS_NODE_IDENT) {
z = css_border_style_parse(v->data, v->data_length);
if (z != CSS_BORDER_STYLE_UNKNOWN) {
s->border[i].style = z;
continue;
}
}
parse_border_width_side(s, v, i);
}
}
void parse_clear(struct css_style * const s, const struct css_node * const v)
{
css_clear z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_clear_parse(v->data, v->data_length);
if (z != CSS_CLEAR_UNKNOWN)
s->clear = z;
}
void parse_color(struct css_style * const s, const struct css_node * const v)
{
colour c = parse_colour(v);
if (c != CSS_COLOR_NONE)
s->color = c;
}
void parse_cursor(struct css_style * const s, const struct css_node * v)
{
css_cursor z;
for (; v; v = v->next) {
switch (v->type) {
case CSS_NODE_IDENT:
z = css_cursor_parse(v->data, v->data_length);
if (z != CSS_CURSOR_UNKNOWN) {
s->cursor = z;
return;
}
break;
default:
break;
}
}
}
void parse_display(struct css_style * const s, const struct css_node * const v)
{
css_display z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_display_parse(v->data, v->data_length);
if (z != CSS_DISPLAY_UNKNOWN)
s->display = z;
}
void parse_float(struct css_style * const s, const struct css_node * const v)
{
css_float z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_float_parse(v->data, v->data_length);
if (z != CSS_FLOAT_UNKNOWN)
s->float_ = z;
}
void parse_font(struct css_style * const s, const struct css_node * v)
{
css_font_family ff;
css_font_style fs;
css_font_variant fv;
css_font_weight fw;
s->font_family = CSS_FONT_FAMILY_SANS_SERIF;
s->font_style = CSS_FONT_STYLE_NORMAL;
s->font_weight = CSS_FONT_WEIGHT_NORMAL;
s->line_height.size = CSS_LINE_HEIGHT_ABSOLUTE;
s->line_height.value.absolute = 1.3;
for (; v; v = v->next) {
switch (v->type) {
case CSS_NODE_IDENT:
/* font-family */
ff = css_font_family_parse(v->data,
v->data_length);
if (ff != CSS_FONT_FAMILY_UNKNOWN) {
s->font_family = ff;
break;
}
/* font-style, font-variant, or font-weight */
fs = css_font_style_parse(v->data,
v->data_length);
if (fs != CSS_FONT_STYLE_UNKNOWN) {
s->font_style = fs;
break;
}
fv = css_font_variant_parse(v->data,
v->data_length);
if (fv != CSS_FONT_VARIANT_UNKNOWN) {
s->font_variant = fv;
break;
}
fw = css_font_weight_parse(v->data,
v->data_length);
if (fw != CSS_FONT_WEIGHT_UNKNOWN) {
s->font_weight = fw;
break;
}
case CSS_NODE_PERCENTAGE:
case CSS_NODE_DIMENSION:
parse_font_size(s, v);
break;
case CSS_NODE_DELIM:
if (v->data[0] == '/' && v->data_length == 1 &&
v->next) {
v = v->next;
parse_line_height(s, v);
}
break;
default:
break;
}
}
}
void parse_font_family(struct css_style * const s, const struct css_node * v)
{
css_font_family z;
for (; v; v = v->next) {
switch (v->type) {
case CSS_NODE_IDENT:
z = css_font_family_parse(v->data,
v->data_length);
if (z != CSS_FONT_FAMILY_UNKNOWN) {
s->font_family = z;
return;
}
break;
default:
break;
}
}
}
void parse_font_size(struct css_style * const s, const struct css_node * const v)
{
char font_size_name[10];
struct css_font_size_entry *fs;
switch (v->type) {
case CSS_NODE_IDENT:
if (9 < v->data_length)
break;
strncpy(font_size_name, v->data, v->data_length);
font_size_name[v->data_length] = 0;
fs = bsearch(font_size_name, css_font_size_table,
sizeof css_font_size_table /
sizeof css_font_size_table[0],
sizeof css_font_size_table[0],
(int (*)(const void *, const void *))
strcasecmp);
if (fs != 0) {
s->font_size.size = CSS_FONT_SIZE_LENGTH;
s->font_size.value.length.unit = CSS_UNIT_PT;
s->font_size.value.length.value = fs->size *
option_font_size / 10;
} else if (v->data_length == 6 &&
strncasecmp(v->data, "larger", 6) == 0) {
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = SIZE_FACTOR * 100;
} else if (v->data_length == 7 &&
strncasecmp(v->data, "smaller", 7) == 0) {
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = 1 / SIZE_FACTOR * 100;
}
break;
case CSS_NODE_PERCENTAGE:
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = atof(v->data);
break;
case CSS_NODE_DIMENSION:
if (parse_length(&s->font_size.value.length, v, true) == 0)
s->font_size.size = CSS_FONT_SIZE_LENGTH;
break;
default:
break;
}
}
void parse_font_style(struct css_style * const s, const struct css_node * const v)
{
css_font_style z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_font_style_parse(v->data, v->data_length);
if (z != CSS_FONT_STYLE_UNKNOWN)
s->font_style = z;
}
void parse_font_variant(struct css_style * const s, const struct css_node * const v)
{
css_font_variant z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_font_variant_parse(v->data, v->data_length);
if (z != CSS_FONT_VARIANT_UNKNOWN)
s->font_variant = z;
}
void parse_font_weight(struct css_style * const s, const struct css_node * const v)
{
css_font_weight z;
if ((v->type != CSS_NODE_IDENT && v->type != CSS_NODE_NUMBER) || v->next != 0)
return;
z = css_font_weight_parse(v->data, v->data_length);
if (z != CSS_FONT_WEIGHT_UNKNOWN)
s->font_weight = z;
}
void parse_height(struct css_style * const s, const struct css_node * const v)
{
if (v->type == CSS_NODE_IDENT && v->data_length == 4 &&
strncasecmp(v->data, "auto", 4) == 0)
s->height.height = CSS_HEIGHT_AUTO;
else if ((v->type == CSS_NODE_DIMENSION || v->type == CSS_NODE_NUMBER) &&
parse_length(&s->height.length, v, true) == 0)
s->height.height = CSS_HEIGHT_LENGTH;
}
void parse_line_height(struct css_style * const s, const struct css_node * const v)
{
if (v->type == CSS_NODE_IDENT && v->data_length == 6 &&
strncasecmp(v->data, "normal", 6) == 0) {
s->line_height.size = CSS_LINE_HEIGHT_ABSOLUTE;
s->line_height.value.absolute = 1.3;
} else if (v->type == CSS_NODE_PERCENTAGE) {
s->line_height.size = CSS_LINE_HEIGHT_PERCENT;
s->line_height.value.percent = atof(v->data);
} else if (v->type == CSS_NODE_DIMENSION &&
parse_length(&s->line_height.value.length, v, true) == 0) {
s->line_height.size = CSS_LINE_HEIGHT_LENGTH;
} else if (v->type == CSS_NODE_NUMBER) {
s->line_height.size = CSS_LINE_HEIGHT_ABSOLUTE;
s->line_height.value.absolute = atof(v->data);
}
}
void parse_margin(struct css_style * const s, const struct css_node * const v)
{
unsigned int count = 0;
const struct css_node *w;
for (w = v; w; w = w->next, count++)
if (!((w->type == CSS_NODE_IDENT && (
(w->data_length == 7 &&
strncasecmp(w->data, "inherit", 7) == 0) ||
(w->data_length == 4 &&
strncasecmp(w->data, "auto", 4) == 0))) ||
(w->type == CSS_NODE_PERCENTAGE) ||
(w->type == CSS_NODE_DIMENSION) ||
(w->type == CSS_NODE_NUMBER)))
return;
w = v;
switch (count) {
case 1: /* one value: applies to all sides */
parse_margin_side(s, w, TOP);
parse_margin_side(s, w, RIGHT);
parse_margin_side(s, w, BOTTOM);
parse_margin_side(s, w, LEFT);
break;
case 2: /* (top and bottom), (left and right) */
parse_margin_side(s, w, TOP);
parse_margin_side(s, w, BOTTOM);
w = w->next;
parse_margin_side(s, w, RIGHT);
parse_margin_side(s, w, LEFT);
break;
case 3: /* top, (left and right), bottom */
parse_margin_side(s, w, TOP);
w = w->next;
parse_margin_side(s, w, RIGHT);
parse_margin_side(s, w, LEFT);
w = w->next;
parse_margin_side(s, w, BOTTOM);
break;
case 4: /* top, right, bottom, left */
parse_margin_side(s, w, TOP);
w = w->next;
parse_margin_side(s, w, RIGHT);
w = w->next;
parse_margin_side(s, w, BOTTOM);
w = w->next;
parse_margin_side(s, w, LEFT);
break;
}
}
#define PARSE_MARGIN_(side, z) \
void parse_margin_ ## side(struct css_style * const s, \
const struct css_node * const v) \
{ \
if (v->next != 0) \
return; \
parse_margin_side(s, v, z); \
}
PARSE_MARGIN_(top, TOP)
PARSE_MARGIN_(right, RIGHT)
PARSE_MARGIN_(bottom, BOTTOM)
PARSE_MARGIN_(left, LEFT)
void parse_margin_side(struct css_style * const s, const struct css_node * const v,
unsigned int i)
{
if (v->type == CSS_NODE_IDENT && v->data_length == 7 &&
strncasecmp(v->data, "inherit", 7) == 0)
s->margin[i].margin = CSS_MARGIN_INHERIT;
else if (v->type == CSS_NODE_IDENT && v->data_length == 4 &&
strncasecmp(v->data, "auto", 4) == 0)
s->margin[i].margin = CSS_MARGIN_AUTO;
else if (v->type == CSS_NODE_PERCENTAGE) {
s->margin[i].margin = CSS_MARGIN_PERCENT;
s->margin[i].value.percent = atof(v->data);
} else if ((v->type == CSS_NODE_DIMENSION || v->type == CSS_NODE_NUMBER) &&
parse_length(&s->margin[i].value.length, v, false) == 0) {
s->margin[i].margin = CSS_MARGIN_LENGTH;
}
}
void parse_padding(struct css_style * const s, const struct css_node * const v)
{
unsigned int count = 0;
const struct css_node *w;
for (w = v; w; w = w->next, count++)
if (!((w->type == CSS_NODE_IDENT && w->data_length == 7 &&
strncasecmp(w->data, "inherit", 7) == 0) ||
(w->type == CSS_NODE_PERCENTAGE) ||
(w->type == CSS_NODE_DIMENSION) ||
(w->type == CSS_NODE_NUMBER)))
return;
w = v;
switch (count) {
case 1: /* one value: applies to all sides */
parse_padding_side(s, w, TOP);
parse_padding_side(s, w, RIGHT);
parse_padding_side(s, w, BOTTOM);
parse_padding_side(s, w, LEFT);
break;
case 2: /* (top and bottom), (left and right) */
parse_padding_side(s, w, TOP);
parse_padding_side(s, w, BOTTOM);
w = w->next;
parse_padding_side(s, w, RIGHT);
parse_padding_side(s, w, LEFT);
break;
case 3: /* top, (left and right), bottom */
parse_padding_side(s, w, TOP);
w = w->next;
parse_padding_side(s, w, RIGHT);
parse_padding_side(s, w, LEFT);
w = w->next;
parse_padding_side(s, w, BOTTOM);
break;
case 4: /* top, right, bottom, left */
parse_padding_side(s, w, TOP);
w = w->next;
parse_padding_side(s, w, RIGHT);
w = w->next;
parse_padding_side(s, w, BOTTOM);
w = w->next;
parse_padding_side(s, w, LEFT);
break;
}
}
#define PARSE_PADDING_(side, z) \
void parse_padding_ ## side(struct css_style * const s, \
const struct css_node * const v) \
{ \
if (v->next != 0) \
return; \
parse_padding_side(s, v, z); \
}
PARSE_PADDING_(top, TOP)
PARSE_PADDING_(right, RIGHT)
PARSE_PADDING_(bottom, BOTTOM)
PARSE_PADDING_(left, LEFT)
void parse_padding_side(struct css_style * const s, const struct css_node * const v,
unsigned int i)
{
if (v->type == CSS_NODE_IDENT && v->data_length == 7 &&
strncasecmp(v->data, "inherit", 7) == 0)
s->padding[i].padding = CSS_PADDING_INHERIT;
else if (v->type == CSS_NODE_PERCENTAGE) {
s->padding[i].padding = CSS_PADDING_PERCENT;
s->padding[i].value.percent = atof(v->data);
} else if ((v->type == CSS_NODE_DIMENSION || v->type == CSS_NODE_NUMBER) &&
parse_length(&s->padding[i].value.length, v, true) == 0) {
s->padding[i].padding = CSS_PADDING_LENGTH;
}
}
void parse_text_align(struct css_style * const s, const struct css_node * const v)
{
css_text_align z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_text_align_parse(v->data, v->data_length);
if (z != CSS_TEXT_ALIGN_UNKNOWN)
s->text_align = z;
}
void parse_text_indent(struct css_style * const s, const struct css_node * const v)
{
if (v->type == CSS_NODE_IDENT) {
return;
} else if (v->type == CSS_NODE_PERCENTAGE) {
s->text_indent.size = CSS_TEXT_INDENT_PERCENT;
s->text_indent.value.percent = atof(v->data);
} else if ((v->type == CSS_NODE_DIMENSION || v->type == CSS_NODE_NUMBER) &&
parse_length(&s->text_indent.value.length, v, true) == 0) {
s->text_indent.size = CSS_TEXT_INDENT_LENGTH;
}
}
void parse_text_decoration(struct css_style * const s, const struct css_node * const v)
{
struct css_node *temp;
css_text_decoration z;
if (v->type != CSS_NODE_IDENT)
return;
z = css_text_decoration_parse(v->data, v->data_length);
if (z == CSS_TEXT_DECORATION_INHERIT || z == CSS_TEXT_DECORATION_NONE) {
if (v->next != 0)
return;
s->text_decoration = z;
}
if (z != CSS_TEXT_DECORATION_UNKNOWN)
s->text_decoration |= z;
for (temp = v->next; temp; temp = temp->next) {
z = css_text_decoration_parse(temp->data, temp->data_length);
if (z != CSS_TEXT_DECORATION_UNKNOWN)
s->text_decoration |= z;
}
}
void parse_text_transform(struct css_style * const s, const struct css_node * const v)
{
css_text_transform z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_text_transform_parse(v->data, v->data_length);
if (z != CSS_TEXT_TRANSFORM_UNKNOWN)
s->text_transform = z;
}
void parse_visibility(struct css_style * const s, const struct css_node * const v)
{
css_visibility z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_visibility_parse(v->data, v->data_length);
if (z != CSS_VISIBILITY_UNKNOWN)
s->visibility = z;
}
void parse_width(struct css_style * const s, const struct css_node * const v)
{
if (v->type == CSS_NODE_IDENT && v->data_length == 4 &&
strncasecmp(v->data, "auto", 4) == 0)
s->width.width = CSS_WIDTH_AUTO;
else if (v->type == CSS_NODE_PERCENTAGE) {
s->width.width = CSS_WIDTH_PERCENT;
s->width.value.percent = atof(v->data);
} else if ((v->type == CSS_NODE_DIMENSION || v->type == CSS_NODE_NUMBER) &&
parse_length(&s->width.value.length, v, true) == 0)
s->width.width = CSS_WIDTH_LENGTH;
}
void parse_white_space(struct css_style * const s, const struct css_node * const v)
{
css_white_space z;
if (v->type != CSS_NODE_IDENT || v->next != 0)
return;
z = css_white_space_parse(v->data, v->data_length);
if (z != CSS_WHITE_SPACE_UNKNOWN)
s->white_space = z;
}
css_text_decoration css_text_decoration_parse(const char * const s,
int length)
{
if (length == 7 && strncasecmp(s, "inherit", 7) == 0)
return CSS_TEXT_DECORATION_INHERIT;
if (length == 4 && strncasecmp(s, "none", 4) == 0)
return CSS_TEXT_DECORATION_NONE;
if (length == 5 && strncasecmp(s, "blink", 5) == 0)
return CSS_TEXT_DECORATION_BLINK;
if (length == 12 && strncasecmp(s, "line-through", 12) == 0)
return CSS_TEXT_DECORATION_LINE_THROUGH;
if (length == 8 && strncasecmp(s, "overline", 8) == 0)
return CSS_TEXT_DECORATION_OVERLINE;
if (length == 9 && strncasecmp(s, "underline", 9) == 0)
return CSS_TEXT_DECORATION_UNDERLINE;
return CSS_TEXT_DECORATION_UNKNOWN;
}
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