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[project @ 2003-04-04 15:19:31 by bursa]

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New CSS parser.

svn path=/import/netsurf/; revision=112
This commit is contained in:
James Bursa 2003-04-04 15:19:32 +00:00
parent eb256015ad
commit 4421b2e633
19 changed files with 1047 additions and 911 deletions
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0
!NetSurf/Resources/CSS → !NetSurf/Resources/CSS,0cc
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11
content/content.c
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@ -1,11 +1,12 @@
/**
* $Id: content.c,v 1.3 2003/02/28 11:49:13 bursa Exp $
* $Id: content.c,v 1.4 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include "netsurf/content/content.h"
#include "netsurf/css/css.h"
#include "netsurf/render/html.h"
#include "netsurf/render/textplain.h"
#include "netsurf/riscos/jpeg.h"
@ -19,8 +20,8 @@ struct mime_entry {
};
static const struct mime_entry mime_map[] = {
{"image/jpeg", CONTENT_JPEG},
/* {"image/png", CONTENT_PNG},
{"text/css", CONTENT_CSS},*/
/* {"image/png", CONTENT_PNG},*/
{"text/css", CONTENT_CSS},
{"text/html", CONTENT_HTML},
{"text/plain", CONTENT_TEXTPLAIN},
};
@ -40,8 +41,8 @@ static const struct handler_entry handler_map[] = {
{textplain_create, textplain_process_data, textplain_convert,
textplain_revive, textplain_reformat, textplain_destroy},
{jpeg_create, jpeg_process_data, jpeg_convert, jpeg_revive, jpeg_reformat, jpeg_destroy},
/* {css_create, css_process_data, css_convert, css_revive, css_destroy},
{png_create, png_process_data, png_convert, png_revive, png_destroy},*/
{css_create, css_process_data, css_convert, css_revive, css_destroy},
/* {png_create, png_process_data, png_convert, png_revive, png_destroy},*/
};

13
content/content.h
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@ -1,5 +1,5 @@
/**
* $Id: content.h,v 1.2 2003/02/25 21:00:27 bursa Exp $
* $Id: content.h,v 1.3 2003/04/04 15:19:31 bursa Exp $
*/
#ifndef _NETSURF_DESKTOP_CONTENT_H_
@ -7,7 +7,7 @@
#include "libxml/HTMLparser.h"
#include "netsurf/content/cache.h"
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "netsurf/render/box.h"
#include "netsurf/riscos/font.h"
@ -66,22 +66,21 @@ struct content
struct page_elements elements;
} html;
struct
{
struct css_stylesheet * stylesheet;
} css;
struct css_stylesheet *css;
struct
{
char * data;
unsigned long length;
} jpeg;
} data;
struct cache_entry *cache;
unsigned long size;
char *title;
unsigned int active;
int error;
};

410
css/css.c Normal file
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@ -0,0 +1,410 @@
/**
* $Id: css.c,v 1.1 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#define CSS_INTERNALS
#include "netsurf/content/content.h"
#include "netsurf/css/css.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
/**
* internal structures
*/
struct decl {
unsigned long score;
struct rule * rule;
};
void css_dump_style(const struct css_style * const style);
const struct css_style css_base_style = {
0xffffff,
CSS_CLEAR_NONE,
0x000000,
CSS_DISPLAY_BLOCK,
CSS_FLOAT_NONE,
{ CSS_FONT_SIZE_LENGTH, { { 12, CSS_UNIT_PT } } },
CSS_FONT_WEIGHT_NORMAL,
CSS_FONT_STYLE_NORMAL,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_ABSOLUTE, { 1.2 } },
CSS_TEXT_ALIGN_LEFT,
{ CSS_WIDTH_AUTO, { { 1, CSS_UNIT_EM } } }
};
const struct css_style css_empty_style = {
CSS_COLOR_INHERIT,
CSS_CLEAR_INHERIT,
CSS_COLOR_INHERIT,
CSS_DISPLAY_INHERIT,
CSS_FLOAT_INHERIT,
{ CSS_FONT_SIZE_INHERIT, { { 1, CSS_UNIT_EM } } },
CSS_FONT_WEIGHT_INHERIT,
CSS_FONT_STYLE_INHERIT,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_INHERIT, { 1.2 } },
CSS_TEXT_ALIGN_INHERIT,
{ CSS_WIDTH_INHERIT, { { 1, CSS_UNIT_EM } } }
};
const struct css_style css_blank_style = {
TRANSPARENT,
CSS_CLEAR_NONE,
CSS_COLOR_INHERIT,
CSS_DISPLAY_INLINE,
CSS_FLOAT_NONE,
{ CSS_FONT_SIZE_INHERIT, { { 1, CSS_UNIT_EM } } },
CSS_FONT_WEIGHT_INHERIT,
CSS_FONT_STYLE_INHERIT,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_INHERIT, { 1.2 } },
CSS_TEXT_ALIGN_INHERIT,
{ CSS_WIDTH_AUTO, { { 1, CSS_UNIT_EM } } }
};
void css_create(struct content *c)
{
LOG(("content %p", c));
c->data.css = xcalloc(1, sizeof(*c->data.css));
css_lex_init(&c->data.css->lexer);
c->data.css->parser = css_parser_Alloc(malloc);
c->data.css->rule = 0;
c->data.css->last_rule = 0;
}
void css_process_data(struct content *c, char *data, unsigned long size)
{
int token;
YY_BUFFER_STATE buffer;
LOG(("content %p, size %lu", c, size));
buffer = css__scan_bytes(data, size, c->data.css->lexer);
while ((token = css_lex(c->data.css->lexer))) {
css_parser_(c->data.css->parser, token,
strdup(css_get_text(c->data.css->lexer)),
c->data.css);
}
css__delete_buffer(buffer, c->data.css->lexer);
}
int css_convert(struct content *c, unsigned int width, unsigned int height)
{
LOG(("content %p", c));
css_parser_(c->data.css->parser, 0, 0, c->data.css);
css_parser_Free(c->data.css->parser, free);
css_lex_destroy(c->data.css->lexer);
return 0;
}
void css_revive(struct content *c, unsigned int width, unsigned int height)
{
}
void css_reformat(struct content *c, unsigned int width, unsigned int height)
{
}
void css_destroy(struct content *c)
{
xfree(c->data.css);
}
/**
* parser support functions
*/
struct node * css_new_node(node_type type, char *data,
struct node *left, struct node *right)
{
struct node *node = xcalloc(1, sizeof(*node));
node->type = type;
node->data = data;
node->left = left;
node->right = right;
node->next = 0;
node->comb = COMB_NONE;
node->style = 0;
return node;
}
void css_free_node(struct node *node)
{
if (node == 0)
return;
if (node->left != 0)
css_free_node(node->left);
if (node->right != 0)
css_free_node(node->right);
if (node->next != 0)
css_free_node(node->next);
if (node->data != 0)
free(node->data);
free(node);
}
void css_get_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, struct css_style * style)
{
struct node *r, *n, *m;
unsigned int i;
LOG(("stylesheet %p, selectors %u", stylesheet, selectors));
for (r = stylesheet->rule; r != 0; r = r->next) {
i = selectors - 1;
n = r;
/* compare element */
if (strcasecmp(selector[i].element, n->data) != 0)
goto not_matched;
LOG(("top element '%s' matched", selector[i].element));
while (1) {
/* class and id */
for (m = n->left; m != 0; m = m->next) {
if (m->type == NODE_ID) {
/* TODO: check if case sensitive */
if (strcmp(selector[i].id, m->data) != 0)
goto not_matched;
} else if (m->type == NODE_CLASS) {
/* TODO: check if case sensitive */
if (strcmp(selector[i].class, m->data) != 0)
goto not_matched;
} else {
goto not_matched;
}
}
LOG(("class and id matched"));
/* ancestors etc. */
if (n->comb == COMB_NONE)
goto matched; /* match successful */
else if (n->comb == COMB_ANCESTOR) {
/* search for ancestor */
assert(n->right != 0);
n = n->right;
LOG(("searching for ancestor '%s'", n->data));
while (i != 0 && strcasecmp(selector[i - 1].element, n->data) != 0)
i--;
if (i == 0)
goto not_matched;
i--;
LOG(("found"));
} else {
/* TODO: COMB_PRECEDED, COMB_PARENT */
goto not_matched;
}
}
matched:
/* TODO: sort by specificity */
LOG(("matched rule %p", r));
css_dump_style(r->style);
css_cascade(style, r->style);
not_matched:
}
css_dump_style(style);
}
void css_parse_property_list(struct css_style * style, char * str)
{
}
/**
* dump a style
*/
static void dump_length(const struct css_length * const length)
{
LOG(("%g%s", length->value,
css_unit_name[length->unit]));
}
#define DUMP_LENGTH(pre, len, post) LOG((pre "%g%s" post, (len)->value, css_unit_name[(len)->unit]));
void css_dump_style(const struct css_style * const style)
{
LOG(("{ "));
LOG(("background-color: #%lx;", style->background_color));
LOG(("clear: %s;", css_clear_name[style->clear]));
LOG(("color: #%lx;", style->color));
LOG(("display: %s;", css_display_name[style->display]));
LOG(("float: %s;", css_float_name[style->float_]));
switch (style->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE:
LOG(("font-size: [%g];", style->font_size.value.absolute)); break;
case CSS_FONT_SIZE_LENGTH:
DUMP_LENGTH("font-size: ", &style->font_size.value.length, ";"); break;
case CSS_FONT_SIZE_PERCENT:
LOG(("font-size: %g%%;", style->font_size.value.percent)); break;
case CSS_FONT_SIZE_INHERIT: LOG(("font-size: inherit;")); break;
default: LOG(("font-size: UNKNOWN;")); break;
}
switch (style->height.height) {
case CSS_HEIGHT_AUTO: LOG(("height: auto;")); break;
case CSS_HEIGHT_LENGTH: DUMP_LENGTH("height: ", &style->height.length, ";"); break;
default: LOG(("height: UNKNOWN;")); break;
}
switch (style->line_height.size) {
case CSS_LINE_HEIGHT_ABSOLUTE:
LOG(("line-height: [%g];", style->line_height.value.absolute)); break;
case CSS_LINE_HEIGHT_LENGTH:
DUMP_LENGTH("line-height: ", &style->line_height.value.length, ";"); break;
case CSS_LINE_HEIGHT_PERCENT:
LOG(("line-height: %g%%;", style->line_height.value.percent)); break;
case CSS_LINE_HEIGHT_INHERIT: LOG(("line-height: inherit;")); break;
default: LOG(("line-height: UNKNOWN;")); break;
}
LOG(("text-align: %s;", css_text_align_name[style->text_align]));
switch (style->width.width) {
case CSS_WIDTH_AUTO: LOG(("width: auto;")); break;
case CSS_WIDTH_LENGTH:
DUMP_LENGTH("width: ", &style->width.value.length, ";"); break;
case CSS_WIDTH_PERCENT: LOG(("width: %g%%;", style->width.value.percent)); break;
default: LOG(("width: UNKNOWN;")); break;
}
LOG(("}"));
}
#if 0
static void dump_selector(const struct css_selector * const sel)
{
if (sel->class != 0)
LOG(("'%s'.'%s' ", sel->element, sel->class);
else if (sel->id != 0)
LOG(("'%s'#'%s' ", sel->element, sel->id);
else
LOG(("'%s' ", sel->element);
}
static void dump_rule(const struct rule * rule)
{
unsigned int i;
for (i = 0; i < rule->selectors; i++)
dump_selector(&rule->selector[i]);
css_dump_style(rule->style);
}
void css_dump_stylesheet(const struct css_stylesheet * stylesheet)
{
unsigned int i;
for (i = 0; i < HASH_SIZE; i++) {
struct rule * rule;
LOG(("hash %i:\n", i);
for (rule = stylesheet->hash[i]; rule != 0; rule = rule->next)
dump_rule(rule);
}
}
#endif
/**
* cascade styles
*/
void css_cascade(struct css_style * const style, const struct css_style * const apply)
{
float f;
if (apply->background_color != CSS_COLOR_INHERIT)
style->background_color = apply->background_color;
if (apply->clear != CSS_CLEAR_INHERIT)
style->clear = apply->clear;
if (apply->color != CSS_COLOR_INHERIT)
style->color = apply->color;
if (apply->display != CSS_DISPLAY_INHERIT)
style->display = apply->display;
if (apply->float_ != CSS_FLOAT_INHERIT)
style->float_ = apply->float_;
if (apply->height.height != CSS_HEIGHT_INHERIT)
style->height = apply->height;
if (apply->text_align != CSS_TEXT_ALIGN_INHERIT)
style->text_align = apply->text_align;
if (apply->width.width != CSS_WIDTH_INHERIT)
style->width = apply->width;
if (apply->font_weight != CSS_FONT_WEIGHT_INHERIT)
style->font_weight = apply->font_weight;
if (apply->font_style != CSS_FONT_STYLE_INHERIT)
style->font_style = apply->font_style;
/* font-size */
f = apply->font_size.value.percent / 100;
switch (apply->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE:
style->font_size = apply->font_size;
break;
case CSS_FONT_SIZE_LENGTH:
switch (apply->font_size.value.length.unit) {
case CSS_UNIT_EM:
f = apply->font_size.value.length.value;
break;
case CSS_UNIT_EX:
f = apply->font_size.value.length.value * 0.6 /*?*/;
break;
default:
style->font_size = apply->font_size;
}
if ((apply->font_size.value.length.unit != CSS_UNIT_EM) &&
(apply->font_size.value.length.unit != CSS_UNIT_EX))
break;
/* drop through if EM or EX */
case CSS_FONT_SIZE_PERCENT:
switch (style->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE:
style->font_size.value.absolute *= f;
break;
case CSS_FONT_SIZE_LENGTH:
style->font_size.value.length.value *= f;
break;
default:
die("attempting percentage of unknown font-size");
}
break;
case CSS_FONT_SIZE_INHERIT:
default: /* leave unchanged */
break;
}
}
#ifdef DEBUG
int main()
{
const char data[] = "h1 { blah: foo; display: block; }"
"h1.c1 h2#id1 + h3, h4 h5.c2#id2 { size: 100mm; color: red }"
"p { background-color: #123; clear: left; color: #ff0000; display: block;"
"float: left; font-size: 150%; height: blah; line-height: 100;"
"text-align: left right; width: 90%;}";
struct content c;
css_create(&c);
css_process_data(&c, data, 24);
css_process_data(&c, data + 24, sizeof(data) - 25);
css_convert(&c, 100, 100);
return 0;
}
#endif

182
css/css.h Normal file
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@ -0,0 +1,182 @@
/**
* $Id: css.h,v 1.1 2003/04/04 15:19:31 bursa Exp $
*/
#ifndef _NETSURF_CSS_CSS_H_
#define _NETSURF_CSS_CSS_H_
#include "css_enum.h"
/**
* structures and typedefs
*/
typedef unsigned long colour; /* 0xbbggrr */
#define TRANSPARENT 0x1000000
#define CSS_COLOR_INHERIT 0x2000000
struct css_length {
float value;
css_unit unit;
};
struct css_style {
colour background_color;
css_clear clear;
colour color;
css_display display;
css_float float_;
struct {
enum { CSS_FONT_SIZE_INHERIT,
CSS_FONT_SIZE_ABSOLUTE,
CSS_FONT_SIZE_LENGTH,
CSS_FONT_SIZE_PERCENT } size;
union {
struct css_length length;
float absolute;
float percent;
} value;
} font_size;
css_font_weight font_weight;
css_font_style font_style;
struct {
enum { CSS_HEIGHT_INHERIT,
CSS_HEIGHT_AUTO,
CSS_HEIGHT_LENGTH } height;
struct css_length length;
} height;
struct {
enum { CSS_LINE_HEIGHT_INHERIT,
CSS_LINE_HEIGHT_ABSOLUTE,
CSS_LINE_HEIGHT_LENGTH,
CSS_LINE_HEIGHT_PERCENT } size;
union {
float absolute;
struct css_length length;
float percent;
} value;
} line_height;
css_text_align text_align;
struct {
enum { CSS_WIDTH_INHERIT,
CSS_WIDTH_AUTO,
CSS_WIDTH_LENGTH,
CSS_WIDTH_PERCENT } width;
union {
struct css_length length;
float percent;
} value;
} width;
};
struct css_stylesheet;
struct css_selector {
const char *element;
char *class;
char *id;
};
extern const struct css_style css_base_style;
extern const struct css_style css_empty_style;
extern const struct css_style css_blank_style;
#ifdef CSS_INTERNALS
typedef enum {
NODE_BLOCK,
NODE_DECLARATION,
NODE_IDENT,
NODE_NUMBER,
NODE_PERCENTAGE,
NODE_DIMENSION,
NODE_STRING,
NODE_DELIM,
NODE_URI,
NODE_HASH,
NODE_UNICODE_RANGE,
NODE_INCLUDES,
NODE_FUNCTION,
NODE_DASHMATCH,
NODE_COLON,
NODE_COMMA,
NODE_PLUS,
NODE_GT,
NODE_PAREN,
NODE_BRAC,
NODE_SELECTOR,
NODE_ID,
NODE_CLASS,
} node_type;
typedef enum {
COMB_NONE,
COMB_ANCESTOR,
COMB_PARENT,
COMB_PRECEDED,
} combinator;
struct node {
node_type type;
char *data;
struct node *left;
struct node *right;
struct node *next;
combinator comb;
struct css_style *style;
};
#include "netsurf/css/scanner.h"
struct css_stylesheet {
yyscan_t lexer;
void *parser;
struct node *rule;
struct node *last_rule;
};
#endif
/**
* interface
*/
#include "netsurf/content/content.h"
void css_create(struct content *c);
void css_process_data(struct content *c, char *data, unsigned long size);
int css_convert(struct content *c, unsigned int width, unsigned int height);
void css_revive(struct content *c, unsigned int width, unsigned int height);
void css_reformat(struct content *c, unsigned int width, unsigned int height);
void css_destroy(struct content *c);
#ifdef CSS_INTERNALS
struct node * css_new_node(node_type type, char *data,
struct node *left, struct node *right);
void css_free_node(struct node *node);
void css_add_ruleset(struct css_stylesheet *stylesheet,
struct node *selector,
struct node *declaration);
void css_parser_Trace(FILE *TraceFILE, char *zTracePrompt);
void *css_parser_Alloc(void *(*mallocProc)(int));
void css_parser_Free(void *p, void (*freeProc)(void*));
void css_parser_(void *yyp, int yymajor, char* yyminor, struct css_stylesheet *stylesheet);
#endif
void css_get_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, struct css_style * style);
void css_cascade(struct css_style * const style, const struct css_style * const apply);
void css_parse_property_list(struct css_style * style, char * str);
#endif

0
render/css_enums → css/css_enums
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16
render/makeenum → css/makeenum Normal file → Executable file
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@ -1,5 +1,5 @@
#!/usr/bin/perl -W
# $Id: makeenum,v 1.2 2002/04/24 17:37:37 bursa Exp $
# $Id: makeenum,v 1.1 2003/04/04 15:19:31 bursa Exp $
$out = shift or die "usage: makeenum leafname";
@ -18,21 +18,21 @@ while (<>) {
$uc_name = uc $name;
print H "extern const char * const ${name}_name[];\n";
print H "typedef enum {\n ${uc_name}_";
print H join ",\n ${uc_name}_", @uc_enum;
print H ",\n ${uc_name}_UNKNOWN\n";
print H "typedef enum {\n ${uc_name}_";
print H join ",\n ${uc_name}_", @uc_enum;
print H ",\n ${uc_name}_UNKNOWN\n";
print H "} $name;\n";
print H "$name ${name}_parse(const char * const s);\n\n";
print C "/**\n * $name\n */\n\n";
print C "const char * const ${name}_name[] = {\n \"";
print C join "\",\n \"", @enum;
print C "const char * const ${name}_name[] = {\n \"";
print C join "\",\n \"", @enum;
print C "\"\n};\n\n";
print C "$name ${name}_parse(const char * const s)\n{\n";
foreach $x (@enum) {
$ux = uc $x;
$ux =~ s/-/_/g;
print C " if (strcmp(s, \"$x\") == 0) return ${uc_name}_$ux;\n";
print C " if (strcasecmp(s, \"$x\") == 0) return ${uc_name}_$ux;\n";
}
print C " return ${uc_name}_UNKNOWN;\n}\n\n";
print C " return ${uc_name}_UNKNOWN;\n}\n\n";
}

21
css/parser.y
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@ -1,5 +1,5 @@
/**
* $Id: parser.y,v 1.3 2003/04/01 21:33:08 bursa Exp $
* $Id: parser.y,v 1.4 2003/04/04 15:19:31 bursa Exp $
*/
/*
@ -47,7 +47,7 @@ block_body ::= block_body SEMI.
ruleset ::= selector_list(A) LBRACE declaration_list(B) RBRACE.
{ css_add_ruleset(stylesheet, A, B);
css_free_node(A); css_free_node(B); }
css_free_node(B); }
ruleset ::= any_list_1(A) LBRACE declaration_list(B) RBRACE.
{ css_free_node(A); css_free_node(B); } /* not CSS2 */
ruleset ::= LBRACE declaration_list RBRACE.
@ -61,14 +61,14 @@ selector_list(A) ::= selector_list(B) COMMA selector(C).
selector(A) ::= simple_selector(B).
{ A = B; }
selector(A) ::= selector(B) combinator(C) simple_selector(D).
{ B->right = D; A->data = C; A = B; }
{ D->right = B; D->comb = C; A = D; }
combinator(A) ::= .
{ A = 0; }
combinator(A) ::= PLUS(B).
{ A = B; }
combinator(A) ::= GT(B).
{ A = B; }
{ A = COMB_ANCESTOR; }
combinator(A) ::= PLUS.
{ A = COMB_PRECEDED; }
combinator(A) ::= GT.
{ A = COMB_PARENT; }
simple_selector(A) ::= element_name(B) detail_list(C).
{ A = css_new_node(NODE_SELECTOR, B, C, 0); }
@ -159,6 +159,7 @@ any(A) ::= LBRAC any_list(B) RBRAC.
%extra_argument { struct css_stylesheet *stylesheet }
%include {
#define CSS_INTERNALS
#include "netsurf/css/scanner.h"
#include "netsurf/css/css.h"
#include "netsurf/utils/utils.h" }
%name css_parser_
@ -168,7 +169,7 @@ any(A) ::= LBRAC any_list(B) RBRAC.
%type selector_list { struct node * }
%type selector { struct node * }
%type combinator { struct node * }
%type combinator { combinator }
%type simple_selector { struct node * }
%type detail_list { struct node * }
%type declaration_list { struct node * }
@ -178,7 +179,9 @@ any(A) ::= LBRAC any_list(B) RBRAC.
%type any_list_1 { struct node * }
%type any { struct node * }
%destructor selector_list { css_free_node($$); }
%destructor selector { css_free_node($$); }
%destructor simple_selector { css_free_node($$); }
%destructor declaration_list { css_free_node($$); }
%destructor declaration { css_free_node($$); }
%destructor value { css_free_node($$); }

336
css/ruleset.c Normal file
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@ -0,0 +1,336 @@
/**
* $Id: ruleset.c,v 1.1 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#define CSS_INTERNALS
#include "netsurf/css/css.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
struct property_entry {
const char name[20];
void (*parse) (struct css_style * const s, const struct node * const v);
};
struct colour_entry {
const char name[12];
colour col;
};
struct font_size_entry {
const char name[10];
float size;
};
static int parse_length(struct css_length * const length, const struct node * const v);
static colour parse_colour(const struct node * const v);
static void parse_background_color(struct css_style * const s, const struct node * const v);
static void parse_clear(struct css_style * const s, const struct node * const v);
static void parse_color(struct css_style * const s, const struct node * const v);
static void parse_display(struct css_style * const s, const struct node * const v);
static void parse_float(struct css_style * const s, const struct node * const v);
static void parse_font_size(struct css_style * const s, const struct node * const v);
static void parse_font_style(struct css_style * const s, const struct node * const v);
static void parse_font_weight(struct css_style * const s, const struct node * const v);
static void parse_height(struct css_style * const s, const struct node * const v);
static void parse_line_height(struct css_style * const s, const struct node * const v);
static void parse_text_align(struct css_style * const s, const struct node * const v);
static void parse_width(struct css_style * const s, const struct node * const v);
/* table of property parsers: MUST be sorted by property name */
static const struct property_entry property_table[] = {
{ "background-color", parse_background_color },
{ "clear", parse_clear },
{ "color", parse_color },
{ "display", parse_display },
{ "float", parse_float },
{ "font-size", parse_font_size },
{ "font-style", parse_font_style },
{ "font-weight", parse_font_weight },
{ "height", parse_height },
{ "line-height", parse_line_height },
{ "text-align", parse_text_align },
{ "width", parse_width },
};
/* table of standard colour names: MUST be sorted by colour name */
static const struct colour_entry colour_table[] = {
{ "aqua", 0x00ffff },
{ "black", 0x000000 },
{ "blue", 0x0000ff },
{ "fuchsia", 0xff00ff },
{ "gray", 0x808080 },
{ "green", 0x008000 },
{ "lime", 0x00ff00 },
{ "maroon", 0x800000 },
{ "navy", 0x000080 },
{ "olive", 0x808000 },
{ "purple", 0x800080 },
{ "red", 0xff0000 },
{ "silver", 0xc0c0c0 },
{ "teal", 0x008080 },
{ "transparent", TRANSPARENT },
{ "white", 0xffffff },
{ "yellow", 0xffff00 },
};
/* table of font sizes: MUST be sorted by name */
#define SIZE_FACTOR 1.2
static const struct font_size_entry 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) },
};
/**
* css_add_ruleset -- add a ruleset to a stylesheet
*/
void css_add_ruleset(struct css_stylesheet *stylesheet,
struct node *selector,
struct node *declaration)
{
struct node *n, *last;
struct css_style *style;
/* construct the struct css_style */
style = xcalloc(1, sizeof(*style));
memcpy(style, &css_blank_style, sizeof(*style));
for (n = declaration; n != 0; n = n->next) {
struct property_entry *p;
assert(n->type == NODE_DECLARATION && n->data != 0 && n->left != 0);
p = bsearch(n->data, property_table,
sizeof(property_table) / sizeof(property_table[0]),
sizeof(property_table[0]), strcasecmp);
if (p == 0)
continue;
p->parse(style, n->left);
}
/*css_dump_style(style);*/
/* add selectors to the stylesheet */
/* TODO: merge with identical selector */
for (n = selector; n != 0; n = n->next) {
n->style = style;
last = n;
}
if (stylesheet->rule == 0)
stylesheet->rule = selector;
else
stylesheet->last_rule->next = selector;
stylesheet->last_rule = last;
}
/**
* property parsers
*/
int parse_length(struct css_length * const length, const struct node * const v)
{
css_unit u;
if (v->type != NODE_DIMENSION)
return 1;
u = css_unit_parse(v->data + strspn(v->data, "0123456789+-."));
if (u == CSS_UNIT_UNKNOWN)
return 1;
length->unit = u;
length->value = atof(v->data);
return 0;
}
colour parse_colour(const struct node * const v)
{
colour c = TRANSPARENT;
int len;
unsigned int r, g, b;
struct colour_entry *col;
switch (v->type) {
case NODE_HASH:
len = strlen(v->data);
if (len == 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 (len == 7) {
if (sscanf(v->data + 1, "%2x%2x%2x", &r, &g, &b) == 3)
c = (b << 16) | (g << 8) | r;
}
break;
case NODE_FUNCTION:
/* TODO: rgb(r, g, b) */
break;
case NODE_IDENT:
col = bsearch(v->data, colour_table,
sizeof(colour_table) / sizeof(colour_table[0]),
sizeof(colour_table[0]), strcasecmp);
if (col != 0)
c = col->col;
break;
default:
break;
}
return c;
}
void parse_background_color(struct css_style * const s, const struct node * const v)
{
s->background_color = parse_colour(v);
}
void parse_clear(struct css_style * const s, const struct node * const v)
{
css_clear z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_clear_parse(v->data);
if (z != CSS_CLEAR_UNKNOWN)
s->clear = z;
}
void parse_color(struct css_style * const s, const struct node * const v)
{
s->color = parse_colour(v);
}
void parse_display(struct css_style * const s, const struct node * const v)
{
css_display z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_display_parse(v->data);
if (z != CSS_DISPLAY_UNKNOWN)
s->display = z;
}
void parse_float(struct css_style * const s, const struct node * const v)
{
css_float z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_float_parse(v->data);
if (z != CSS_FLOAT_UNKNOWN)
s->float_ = z;
}
void parse_font_size(struct css_style * const s, const struct node * const v)
{
struct font_size_entry *fs;
switch (v->type) {
case NODE_IDENT:
fs = bsearch(v->data, font_size_table,
sizeof(font_size_table) / sizeof(font_size_table[0]),
sizeof(font_size_table[0]), 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 * 12;
} else if (strcasecmp(v->data, "larger") == 0) {
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = SIZE_FACTOR * 100;
} else if (strcmp(v->data, "smaller") == 0) {
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = 1 / SIZE_FACTOR * 100;
}
break;
case NODE_PERCENTAGE:
s->font_size.size = CSS_FONT_SIZE_PERCENT;
s->font_size.value.percent = atof(v->data);
break;
case NODE_DIMENSION:
if (parse_length(&s->font_size.value.length, v) == 0)
s->font_size.size = CSS_FONT_SIZE_LENGTH;
break;
default:
break;
}
}
void parse_font_style(struct css_style * const s, const struct node * const v)
{
css_font_style z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_font_style_parse(v->data);
if (z != CSS_FONT_STYLE_UNKNOWN)
s->font_style = z;
}
void parse_font_weight(struct css_style * const s, const struct node * const v)
{
css_font_weight z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_font_weight_parse(v->data);
if (z != CSS_FONT_WEIGHT_UNKNOWN)
s->font_weight = z;
}
void parse_height(struct css_style * const s, const struct node * const v)
{
if (v->type == NODE_IDENT && strcasecmp(v->data, "auto") == 0)
s->height.height = CSS_HEIGHT_AUTO;
else if (v->type == NODE_DIMENSION && parse_length(&s->height.length, v) == 0)
s->height.height = CSS_HEIGHT_LENGTH;
}
void parse_line_height(struct css_style * const s, const struct node * const v)
{
if (v->type == NODE_IDENT && strcasecmp(v->data, "normal") == 0) {
s->line_height.size = CSS_LINE_HEIGHT_ABSOLUTE;
s->line_height.value.absolute = 1.0;
} else if (v->type == NODE_PERCENTAGE) {
s->line_height.size = CSS_LINE_HEIGHT_PERCENT;
s->line_height.value.percent = atof(v->data);
} else if (v->type == NODE_DIMENSION &&
parse_length(&s->line_height.value.length, v) == 0) {
s->line_height.size = CSS_LINE_HEIGHT_LENGTH;
}
}
void parse_text_align(struct css_style * const s, const struct node * const v)
{
css_text_align z;
if (v->type != NODE_IDENT || v->next != 0)
return;
z = css_text_align_parse(v->data);
if (z != CSS_TEXT_ALIGN_UNKNOWN)
s->text_align = z;
}
void parse_width(struct css_style * const s, const struct node * const v)
{
if (v->type == NODE_IDENT && strcasecmp(v->data, "auto") == 0)
s->width.width = CSS_WIDTH_AUTO;
else if (v->type == NODE_PERCENTAGE) {
s->width.width = CSS_WIDTH_PERCENT;
s->width.value.percent = atof(v->data);
} else if (v->type == NODE_DIMENSION &&
parse_length(&s->width.value.length, v) == 0)
s->width.width = CSS_WIDTH_LENGTH;
}

38
makefile
View File

@ -1,13 +1,13 @@
# $Id: makefile,v 1.15 2003/03/15 15:53:20 bursa Exp $
# $Id: makefile,v 1.16 2003/04/04 15:19:31 bursa Exp $
all: !NetSurf/!RunImage,ff8
clean:
rm */arm-riscos-aof/*
-rm */arm-riscos-aof/* css/parser.c css/parser.h css/scanner.c css/scanner.h
setup: render/arm-riscos-aof riscos/arm-riscos-aof desktop/arm-riscos-aof \
content/arm-riscos-aof utils/arm-riscos-aof
content/arm-riscos-aof utils/arm-riscos-aof css/arm-riscos-aof
%/arm-riscos-aof:
mkdir $@
-mkdir $@
FLAGS = -Wall -W -Wundef -Wpointer-arith -Wbad-function-cast -Wcast-qual \
-Wcast-align -Wwrite-strings -Wconversion -Wstrict-prototypes -Wmissing-prototypes \
@ -19,31 +19,31 @@ OBJECTS = \
content/arm-riscos-aof/cache.o content/arm-riscos-aof/content.o \
content/arm-riscos-aof/fetch.o content/arm-riscos-aof/fetchcache.o \
desktop/arm-riscos-aof/browser.o desktop/arm-riscos-aof/netsurf.o \
render/arm-riscos-aof/box.o render/arm-riscos-aof/css.o \
render/arm-riscos-aof/css_enum.o render/arm-riscos-aof/html.o \
render/arm-riscos-aof/box.o \
render/arm-riscos-aof/html.o \
render/arm-riscos-aof/layout.o render/arm-riscos-aof/textplain.o \
riscos/arm-riscos-aof/font.o riscos/arm-riscos-aof/gui.o \
riscos/arm-riscos-aof/theme.o riscos/arm-riscos-aof/jpeg.o \
riscos/arm-riscos-aof/filetype.o utils/arm-riscos-aof/utils.o
riscos/arm-riscos-aof/filetype.o utils/arm-riscos-aof/utils.o \
css/arm-riscos-aof/css.o css/arm-riscos-aof/css_enum.o \
css/arm-riscos-aof/parser.o css/arm-riscos-aof/scanner.o \
css/arm-riscos-aof/ruleset.o
HEADERS = \
content/cache.h content/content.h content/fetch.h content/fetchcache.h \
desktop/browser.h desktop/gui.h desktop/netsurf.h render/box.h \
render/css.h render/css_enum.h render/html.h render/layout.h \
render/html.h render/layout.h \
riscos/font.h riscos/gui.h riscos/theme.h utils/log.h \
utils/utils.h render/textplain.h
utils/utils.h render/textplain.h \
css/css.h css/css_enum.h css/parser.h css/scanner.h
LIBS = \
/usr/local/riscoslibs/libxml2/libxml2.ro \
/usr/local/riscoslibs/OSLib/OSLib.ro \
/usr/local/riscoslibs/curl/libcurl.ro \
/usr/local/riscoslibs/libutf-8/libutf-8.ro
# /usr/local/riscoslibs/ubiqx/ubiqx.ro
!NetSurf/!RunImage,ff8: $(OBJECTS)
$(CC) $(FLAGS) -o !NetSurf/!RunImage,ff8 $(OBJECTS) $(LIBS)
render/css_enum.c render/css_enum.h: render/css_enums render/makeenum
cd ..; /usr/bin/perl netsurf/render/makeenum netsurf/render/css_enum < netsurf/render/css_enums
render/arm-riscos-aof/%.o: render/%.c $(HEADERS)
$(CC) $(FLAGS) -o $@ -c $<
@ -59,6 +59,18 @@ content/arm-riscos-aof/%.o: content/%.c $(HEADERS)
utils/arm-riscos-aof/%.o: utils/%.c $(HEADERS)
$(CC) $(FLAGS) -o $@ -c $<
css/css_enum.c css/css_enum.h: css/css_enums css/makeenum
cd ..; /usr/bin/perl netsurf/css/makeenum netsurf/css/css_enum < netsurf/css/css_enums
css/parser.c css/parser.h: css/parser.y
-cd css; lemon parser.y
css/scanner.c css/scanner.h: css/scanner.l
cd css; flex scanner.l
css/arm-riscos-aof/%.o: css/%.c $(HEADERS)
$(CC) $(FLAGS) -o $@ -c $<
netsurf.zip: !NetSurf/!RunImage,ff8
rm netsurf.zip; riscos-zip -9vr, netsurf.zip !NetSurf

4
render/box.c
View File

@ -1,5 +1,5 @@
/**
* $Id: box.c,v 1.35 2003/03/25 21:51:29 bursa Exp $
* $Id: box.c,v 1.36 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
@ -9,7 +9,7 @@
#include <string.h>
#include "libxml/HTMLparser.h"
#include "libutf-8/utf-8.h"
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "netsurf/riscos/font.h"
#include "netsurf/render/box.h"
#include "netsurf/utils/utils.h"

4
render/box.h
View File

@ -1,5 +1,5 @@
/**
* $Id: box.h,v 1.20 2003/03/04 11:59:35 bursa Exp $
* $Id: box.h,v 1.21 2003/04/04 15:19:31 bursa Exp $
*/
#ifndef _NETSURF_RENDER_BOX_H_
@ -7,7 +7,7 @@
#include <limits.h>
#include "libxml/HTMLparser.h"
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "netsurf/riscos/font.h"
/**

743
render/css.c
View File

@ -1,743 +0,0 @@
/**
* $Id: css.c,v 1.13 2003/02/09 12:58:15 bursa Exp $
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "netsurf/render/css.h"
#include "netsurf/utils/utils.h"
/**
* internal structures
*/
struct rule {
struct css_selector * selector;
unsigned int selectors;
struct css_style * style;
struct rule * next;
};
struct decl {
unsigned long score;
struct rule * rule;
};
#define HASH_SIZE 1
struct css_stylesheet {
struct rule * hash[HASH_SIZE];
};
static int parse_length(struct css_length * const length, const char *s);
static colour parse_colour(const char *s);
static void parse_background_color(struct css_style * const style, const char * const value);
static void parse_clear(struct css_style * const style, const char * const value);
static void parse_color(struct css_style * const style, const char * const value);
static void parse_display(struct css_style * const style, const char * const value);
static void parse_float(struct css_style * const style, const char * const value);
static void parse_font_size(struct css_style * const style, const char * const value);
static void parse_height(struct css_style * const style, const char * const value);
static void parse_text_align(struct css_style * const style, const char * const value);
static void parse_width(struct css_style * const style, const char * const value);
static void parse_selector(struct css_selector * sel, char * const str);
static unsigned int hash_str(const char * str);
static int seleq(const struct css_selector * const s1, const struct css_selector * const s2);
static unsigned long selmatch(const struct css_selector * const s, const struct css_selector * const sr);
static struct rule * find_rule(struct css_stylesheet * stylesheet,
struct css_selector * selector, unsigned int selectors);
static int cmpdecl(const struct decl * d0, const struct decl * d1);
static void update_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, char * str);
static void dump_length(const struct css_length * const length);
static void dump_selector(const struct css_selector * const sel);
static void dump_rule(const struct rule * rule);
const struct css_style css_base_style = {
0xffffff,
CSS_CLEAR_NONE,
0x000000,
CSS_DISPLAY_BLOCK,
CSS_FLOAT_NONE,
{ CSS_FONT_SIZE_LENGTH, { { 12, CSS_UNIT_PT } } },
CSS_FONT_WEIGHT_NORMAL,
CSS_FONT_STYLE_NORMAL,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_ABSOLUTE, { 1.2 } },
CSS_TEXT_ALIGN_LEFT,
{ CSS_WIDTH_AUTO, { { 1, CSS_UNIT_EM } } }
};
const struct css_style css_empty_style = {
CSS_COLOR_INHERIT,
CSS_CLEAR_INHERIT,
CSS_COLOR_INHERIT,
CSS_DISPLAY_INHERIT,
CSS_FLOAT_INHERIT,
{ CSS_FONT_SIZE_INHERIT, { { 1, CSS_UNIT_EM } } },
CSS_FONT_WEIGHT_INHERIT,
CSS_FONT_STYLE_INHERIT,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_INHERIT, { 1.2 } },
CSS_TEXT_ALIGN_INHERIT,
{ CSS_WIDTH_INHERIT, { { 1, CSS_UNIT_EM } } }
};
const struct css_style css_blank_style = {
TRANSPARENT,
CSS_CLEAR_NONE,
CSS_COLOR_INHERIT,
CSS_DISPLAY_INLINE,
CSS_FLOAT_NONE,
{ CSS_FONT_SIZE_INHERIT, { { 1, CSS_UNIT_EM } } },
CSS_FONT_WEIGHT_INHERIT,
CSS_FONT_STYLE_INHERIT,
{ CSS_HEIGHT_AUTO, { 1, CSS_UNIT_EM } },
{ CSS_LINE_HEIGHT_INHERIT, { 1.2 } },
CSS_TEXT_ALIGN_INHERIT,
{ CSS_WIDTH_AUTO, { { 1, CSS_UNIT_EM } } }
};
/**
* property parsers
*/
static int parse_length(struct css_length * const length, const char *s)
{
length->unit = css_unit_parse(s + strspn(s, "0123456789+-."));
if (length->unit == CSS_UNIT_UNKNOWN) return 1;
length->value = atof(s);
return 0;
}
static colour parse_colour(const char *s)
{
int len = strlen(s);
colour c = TRANSPARENT;
unsigned int r, g, b;
if (s[0] == '#' && len == 4) {
if (sscanf(s + 1, "%1x%1x%1x", &r, &g, &b) == 3)
c = (b << 20) | (b << 16) | (g << 12) | (g << 8) | (r << 4) | r;
} else if (s[0] == '#' && len == 7) {
if (sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
c = (b << 16) | (g << 8) | r;
} else if (sscanf(s, "rgb(%u, %u, %u)", &r, &g, &b) == 3) {
c = (b << 16) | (g << 8) | r;
} else if (sscanf(s, "rgb(%u%%, %u%%, %u%%)", &r, &g, &b) == 3) {
c = ((int) (b * 2.55) << 16) | ((int) (g * 2.55) << 8) | (int) (r * 2.55);
}
return c;
}
static void parse_background_color(struct css_style * const style, const char * const value)
{
if (strcmp(value, "transparent") == 0) {
style->background_color = TRANSPARENT;
} else {
style->background_color = parse_colour(value);
}
}
static void parse_clear(struct css_style * const style, const char * const value)
{
style->clear = css_clear_parse(value);
}
static void parse_color(struct css_style * const style, const char * const value)
{
style->color = parse_colour(value);
}
static void parse_display(struct css_style * const style, const char * const value)
{
style->display = css_display_parse(value);
}
static void parse_float(struct css_style * const style, const char * const value)
{
style->float_ = css_float_parse(value);
}
static void parse_font_weight(struct css_style * const style, const char * const value)
{
style->font_weight = css_font_weight_parse(value);
}
static void parse_font_style(struct css_style * const style, const char * const value)
{
style->font_style = css_font_style_parse(value);
}
#define SIZE_FACTOR 1.2
static struct font_size {
const char * keyword;
float size;
} const font_size[] = {
{ "xx-small", 1.0 / (SIZE_FACTOR * SIZE_FACTOR * SIZE_FACTOR) },
{ "x-small", 1.0 / (SIZE_FACTOR * SIZE_FACTOR) },
{ "small", 1.0 / SIZE_FACTOR },
{ "medium", 1.0 },
{ "large", 1.0 * SIZE_FACTOR },
{ "x-large", 1.0 * SIZE_FACTOR * SIZE_FACTOR },
{ "xx-large", 1.0 * SIZE_FACTOR * SIZE_FACTOR * SIZE_FACTOR }
};
static void parse_font_size(struct css_style * const style, const char * const value)
{
unsigned int i;
for (i = 0; i < sizeof(font_size) / sizeof(struct font_size); i++) {
if (strcmp(value, font_size[i].keyword) == 0) {
style->font_size.size = CSS_FONT_SIZE_LENGTH;
style->font_size.value.length.unit = CSS_UNIT_PT;
style->font_size.value.length.value = font_size[i].size * 12;
return;
}
}
if (strcmp(value, "larger") == 0) {
style->font_size.size = CSS_FONT_SIZE_PERCENT;
style->font_size.value.percent = SIZE_FACTOR * 100;
} else if (strcmp(value, "smaller") == 0) {
style->font_size.size = CSS_FONT_SIZE_PERCENT;
style->font_size.value.percent = 1 / SIZE_FACTOR * 100;
} else if (strrchr(value, '%')) {
style->font_size.size = CSS_FONT_SIZE_PERCENT;
style->font_size.value.percent = atof(value);
} else if (parse_length(&style->font_size.value.length, value) == 0) {
style->font_size.size = CSS_FONT_SIZE_LENGTH;
}
}
static void parse_height(struct css_style * const style, const char * const value)
{
if (strcmp(value, "auto") == 0)
style->height.height = CSS_HEIGHT_AUTO;
else if (parse_length(&style->height.length, value) == 0)
style->height.height = CSS_HEIGHT_LENGTH;
}
static void parse_line_height(struct css_style * const style, const char * const value)
{
if (strcmp(value, "normal") == 0) {
style->line_height.size = CSS_LINE_HEIGHT_ABSOLUTE;
style->line_height.value.absolute = 1.0;
} else if (strrchr(value, '%')) {
style->line_height.size = CSS_LINE_HEIGHT_PERCENT;
style->line_height.value.percent = atof(value);
} else if (parse_length(&style->line_height.value.length, value) == 0) {
style->line_height.size = CSS_LINE_HEIGHT_LENGTH;
}
}
static void parse_text_align(struct css_style * const style, const char * const value)
{
style->text_align = css_text_align_parse(value);
}
static void parse_width(struct css_style * const style, const char * const value)
{
if (strcmp(value, "auto") == 0)
style->width.width = CSS_WIDTH_AUTO;
else if (strrchr(value, '%')) {
style->width.width = CSS_WIDTH_PERCENT;
style->width.value.percent = atof(value);
} else if (parse_length(&style->width.value.length, value) == 0)
style->width.width = CSS_WIDTH_LENGTH;
}
static struct property {
const char * const name;
void (*parse) (struct css_style * const s, const char * const value);
} const property[] = {
{ "background-color", parse_background_color },
{ "clear", parse_clear },
{ "color", parse_color },
{ "display", parse_display },
{ "float", parse_float },
{ "font-weight", parse_font_weight },
{ "font-size", parse_font_size },
{ "font-style", parse_font_style },
{ "height", parse_height },
{ "line-height", parse_line_height },
{ "text-align", parse_text_align },
{ "width", parse_width },
};
/**
* parse a property list
*/
void css_parse_property_list(struct css_style * style, char * str)
{
char * end;
for (; str != 0; str = end) {
char * prop;
char * value;
unsigned int i;
if ((end = strchr(str, ';')) != 0) {
*end = 0;
end++;
}
if ((value = strchr(str, ':')) == 0)
continue;
*value = 0;
value++;
prop = strip(str);
value = strip(value);
/*fprintf(stderr, "css_parse: '%s' => '%s'\n", prop, value);*/
for (i = 0; i < sizeof(property) / sizeof(struct property); i++) {
if (strcmp(prop, property[i].name) == 0) {
property[i].parse(style, value);
break;
}
}
}
}
/**
* selectors
*/
static void parse_selector(struct css_selector * sel, char * const str)
{
char * dot = strchr(str, '.');
char * hash = strchr(str, '#');
if ((dot == 0) && (hash == 0)) {
sel->element = xstrdup(str);
sel->class = sel->id = 0;
} else if (dot != 0) {
*dot = 0;
sel->element = xstrdup(str);
sel->class = xstrdup(dot + 1);
sel->id = 0;
} else if (hash != 0) {
*hash = 0;
sel->element = xstrdup(str);
sel->class = 0;
sel->id = xstrdup(hash + 1);
}
}
/**
* stylesheet structure
*/
static unsigned int hash_str(const char * str)
{
unsigned int s = 0;
for (; *str != 0; str++)
s += *str;
return s % HASH_SIZE;
}
static int seleq(const struct css_selector * const s1, const struct css_selector * const s2)
{
return strcmp(s1->element, s2->element) == 0 &&
((s1->class == 0 && s2->class == 0) ||
(s1->class != 0 && s2->class != 0 && strcmp(s1->class, s2->class) == 0)) &&
((s1->id == 0 && s2->id == 0) ||
(s1->id != 0 && s2->id != 0 && strcmp(s1->id, s2->id) == 0));
}
static unsigned long selmatch(const struct css_selector * const s, const struct css_selector * const sr)
{
unsigned int c;
if (sr->element[0] != 0 && strcmp(s->element, sr->element) != 0) return 0;
c = s->element[0] == 0 ? 0 : 1;
if (sr->class != 0) {
if (s->class != 0 && strcmp(s->class, sr->class) == 0) return 0x100 + c;
return 0;
}
if (sr->id != 0) {
if (s->id != 0 && strcmp(s->id, sr->id) == 0) return 0x10000 + c;
return 0;
}
return 1;
}
struct css_stylesheet * css_new_stylesheet(void)
{
struct css_stylesheet * stylesheet = xcalloc(1, sizeof(struct css_stylesheet));
return stylesheet;
}
static struct rule * find_rule(struct css_stylesheet * stylesheet,
struct css_selector * selector, unsigned int selectors)
{
struct rule * rule;
for (rule = stylesheet->hash[hash_str(selector[selectors - 1].element)];
rule != 0; rule = rule->next) {
unsigned int i;
if (selectors != rule->selectors)
continue;
/* inv: selector[0..i) == rule->selector[0..i) */
for (i = 0; i != selectors && seleq(&selector[i], &rule->selector[i]); i++)
;
if (i == selectors)
return rule;
}
return 0;
}
static int cmpdecl(const struct decl * d0, const struct decl * d1)
{
if (d0->score < d1->score) return -1;
else if (d0->score == d1->score) return 0;
return 1;
}
void css_get_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, struct css_style * style)
{
struct rule * rule;
struct decl * decl = xcalloc(0, sizeof(struct decl));
unsigned int d, decls = 0;
/* fprintf(stderr, "css_get_style: "); */
/* for (d = 0; d < selectors; d++) dump_selector(&selector[d]); */
/* fprintf(stderr, "\n"); */
for (rule = stylesheet->hash[hash_str(selector[selectors - 1].element)];
rule != 0; rule = rule->next) {
unsigned int i = selectors - 1;
unsigned int j;
unsigned int score, s;
/* for (d = 0; d < rule->selectors; d++) dump_selector(&rule->selector[d]); */
if ((score = selmatch(&selector[i], &rule->selector[rule->selectors - 1])) == 0) {
/* fprintf(stderr, " last selector match fails\n"); */
continue;
}
if (selectors < rule->selectors) {
/* fprintf(stderr, " less selectors than in rule\n"); */
continue;
}
for (j = rule->selectors - 1; j != 0; j--) {
for (; i != 0 && (s = selmatch(&selector[i - 1], &rule->selector[j - 1])) == 0; i--)
;
if (i == 0)
break;
score += s;
}
if (j == 0) {
/* fprintf(stderr, " match\n"); */
decl = xrealloc(decl, (decls + 1) * sizeof(struct decl));
decl[decls].score = score;
decl[decls].rule = rule;
decls++;
} else {
/* fprintf(stderr, " some selector match fails\n"); */
}
}
if (decls == 0) {
css_cascade(style, &css_blank_style);
} else {
qsort(decl, decls, sizeof(struct decl), (int (*) (const void *, const void *)) cmpdecl);
for (d = 0; d < decls; d++) {
/* fprintf(stderr, "%i: 0x%lx\n", d, decl[d].score); */
/* dump_rule(decl[d].rule);*/
css_cascade(style, decl[d].rule->style);
}
}
}
static void update_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, char * str)
{
struct rule * rule = find_rule(stylesheet, selector, selectors);
if (rule == 0) {
unsigned int h = hash_str(selector[selectors - 1].element);
/*fprintf(stderr, "update_style: not present - adding\n");*/
rule = xcalloc(1, sizeof(struct rule));
rule->selector = selector;
rule->selectors = selectors;
rule->style = xcalloc(1, sizeof(struct css_style));
memcpy(rule->style, &css_blank_style, sizeof(struct css_style));
css_parse_property_list(rule->style, str);
rule->next = stylesheet->hash[h];
stylesheet->hash[h] = rule;
} else {
/*fprintf(stderr, "update_style: already present - updating\n");*/
css_parse_property_list(rule->style, str);
free(selector);
}
}
/**
* parse an entire css file or block
*/
void css_parse_stylesheet(struct css_stylesheet * stylesheet, char * str)
{
/* overwrite comments with spaces */
char * copen = strstr(str, "/*");
while (copen != 0) {
char * cclose = strstr(copen + 2, "*/");
if (cclose == 0) { *copen = 0; break; }
memset(copen, ' ', (size_t) (cclose - copen + 2));
copen = strstr(cclose + 2, "/*");
}
while (*str != 0) {
char * open = strchr(str, '{');
char * close = strchr(str, '}');
char * sels_str;
char * comma;
if ((open == 0) || (close == 0)) break;
*open = 0; *close = 0;
sels_str = strip(str);
do {
char * sel_str;
char * space;
char * style_str;
unsigned int selectors = 0;
struct css_selector * selector = xcalloc(0, sizeof(struct css_selector));
comma = strchr(sels_str, ',');
if (comma != 0) *comma = 0;
sel_str = strip(sels_str);
/*fprintf(stderr, "css_parse_stylesheet: %s\n", sel_str);*/
do {
space = strchr(sel_str, ' ');
if (space != 0) *space = 0;
selector = xrealloc(selector, sizeof(struct css_selector) * (selectors + 1));
parse_selector(&selector[selectors++], sel_str);
if (space != 0) sel_str = strip(space + 1);
} while (space != 0);
style_str = xstrdup(open + 1);
update_style(stylesheet, selector, selectors, style_str);
free(style_str);
if (comma != 0) sels_str = strip(comma + 1);
} while (comma != 0);
str = close + 1;
}
}
/**
* dump a style
*/
static void dump_length(const struct css_length * const length)
{
fprintf(stderr, "%g%s", length->value,
css_unit_name[length->unit]);
}
void css_dump_style(const struct css_style * const style)
{
fprintf(stderr, "{ ");
fprintf(stderr, "background-color: #%lx; ", style->background_color);
fprintf(stderr, "clear: %s; ", css_clear_name[style->clear]);
fprintf(stderr, "color: #%lx; ", style->color);
fprintf(stderr, "display: %s; ", css_display_name[style->display]);
fprintf(stderr, "float: %s; ", css_float_name[style->float_]);
fprintf(stderr, "font-size: ");
switch (style->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE: fprintf(stderr, "[%g]", style->font_size.value.absolute); break;
case CSS_FONT_SIZE_LENGTH: dump_length(&style->font_size.value.length); break;
case CSS_FONT_SIZE_PERCENT: fprintf(stderr, "%g%%", style->font_size.value.percent); break;
case CSS_FONT_SIZE_INHERIT: fprintf(stderr, "inherit"); break;
default: fprintf(stderr, "UNKNOWN"); break;
}
fprintf(stderr, "; ");
fprintf(stderr, "height: ");
switch (style->height.height) {
case CSS_HEIGHT_AUTO: fprintf(stderr, "auto"); break;
case CSS_HEIGHT_LENGTH: dump_length(&style->height.length); break;
default: fprintf(stderr, "UNKNOWN"); break;
}
fprintf(stderr, "; ");
fprintf(stderr, "line-height: ");
switch (style->line_height.size) {
case CSS_LINE_HEIGHT_ABSOLUTE: fprintf(stderr, "[%g]", style->line_height.value.absolute); break;
case CSS_LINE_HEIGHT_LENGTH: dump_length(&style->line_height.value.length); break;
case CSS_LINE_HEIGHT_PERCENT: fprintf(stderr, "%g%%", style->line_height.value.percent); break;
case CSS_LINE_HEIGHT_INHERIT: fprintf(stderr, "inherit"); break;
default: fprintf(stderr, "UNKNOWN"); break;
}
fprintf(stderr, "; ");
fprintf(stderr, "text-align: %s; ", css_text_align_name[style->text_align]);
fprintf(stderr, "width: ");
switch (style->width.width) {
case CSS_WIDTH_AUTO: fprintf(stderr, "auto"); break;
case CSS_WIDTH_LENGTH: dump_length(&style->width.value.length); break;
case CSS_WIDTH_PERCENT: fprintf(stderr, "%g%%", style->width.value.percent); break;
default: fprintf(stderr, "UNKNOWN"); break;
}
fprintf(stderr, "; ");
fprintf(stderr, "}");
}
static void dump_selector(const struct css_selector * const sel)
{
if (sel->class != 0)
fprintf(stderr, "'%s'.'%s' ", sel->element, sel->class);
else if (sel->id != 0)
fprintf(stderr, "'%s'#'%s' ", sel->element, sel->id);
else
fprintf(stderr, "'%s' ", sel->element);
}
static void dump_rule(const struct rule * rule)
{
unsigned int i;
for (i = 0; i < rule->selectors; i++)
dump_selector(&rule->selector[i]);
css_dump_style(rule->style);
}
void css_dump_stylesheet(const struct css_stylesheet * stylesheet)
{
unsigned int i;
for (i = 0; i < HASH_SIZE; i++) {
struct rule * rule;
fprintf(stderr, "hash %i:\n", i);
for (rule = stylesheet->hash[i]; rule != 0; rule = rule->next)
dump_rule(rule);
}
}
/**
* cascade styles
*/
void css_cascade(struct css_style * const style, const struct css_style * const apply)
{
float f;
if (apply->background_color != CSS_COLOR_INHERIT)
style->background_color = apply->background_color;
if (apply->clear != CSS_CLEAR_INHERIT)
style->clear = apply->clear;
if (apply->color != CSS_COLOR_INHERIT)
style->color = apply->color;
if (apply->display != CSS_DISPLAY_INHERIT)
style->display = apply->display;
if (apply->float_ != CSS_FLOAT_INHERIT)
style->float_ = apply->float_;
if (apply->height.height != CSS_HEIGHT_INHERIT)
style->height = apply->height;
if (apply->text_align != CSS_TEXT_ALIGN_INHERIT)
style->text_align = apply->text_align;
if (apply->width.width != CSS_WIDTH_INHERIT)
style->width = apply->width;
if (apply->font_weight != CSS_FONT_WEIGHT_INHERIT)
style->font_weight = apply->font_weight;
if (apply->font_style != CSS_FONT_STYLE_INHERIT)
style->font_style = apply->font_style;
/* font-size */
f = apply->font_size.value.percent / 100;
switch (apply->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE:
style->font_size = apply->font_size;
break;
case CSS_FONT_SIZE_LENGTH:
switch (apply->font_size.value.length.unit) {
case CSS_UNIT_EM:
f = apply->font_size.value.length.value;
break;
case CSS_UNIT_EX:
f = apply->font_size.value.length.value * 0.6 /*?*/;
break;
default:
style->font_size = apply->font_size;
}
if ((apply->font_size.value.length.unit != CSS_UNIT_EM) &&
(apply->font_size.value.length.unit != CSS_UNIT_EX))
break;
/* drop through if EM or EX */
case CSS_FONT_SIZE_PERCENT:
switch (style->font_size.size) {
case CSS_FONT_SIZE_ABSOLUTE:
style->font_size.value.absolute *= f;
break;
case CSS_FONT_SIZE_LENGTH:
style->font_size.value.length.value *= f;
break;
default:
die("attempting percentage of unknown font-size");
}
break;
case CSS_FONT_SIZE_INHERIT:
default: /* leave unchanged */
break;
}
}
/**
* testing
*/
/*
int main(int argv, char *argc[])
{
int i;
struct rule * r;
struct css_stylesheet * s;
struct css_selector sel = { "h1", 0, 0 };
struct css_selector con[] = {{ "html", 0, 0 }, {"body", 0, 0}, {"h1", "foo", 0}, {"b", 0, "bar"}};
struct css_style * style = xcalloc(1, sizeof(struct css_style));
s = css_new_stylesheet();
css_parse_stylesheet(s, argc[1]);
css_dump_stylesheet(s);
r->selectors = 1;
css_stylesheet_add_rule(s, r);
puts("********** finding h1:");
r = find_rule(s, &sel, 1);
if (r)
dump_rule(r);
else
puts("not found");
puts("********** finding html body h1.foo b#bar:");
for (i = 1; i <= sizeof(con) / sizeof(con[0]); i++) {
css_get_style(s, con, i, style);
css_dump_style(style);
}
fprintf(stderr, "%x %x\n", r, r2);
struct css_style *s;
struct css_selector *sel;
s = parse_property_list(argc[1]);
css_dump_style(s);
for (i = 2; i < argv; i++) {
css_cascade(s, parse_property_list(argc[i]));
css_dump_style(s);
}*/
/* for (i = 1; i < argv; i++) {
sel = parse_selector(argc[i]);
css_dump_selector(sel);
puts("");
}*/
/*
return 0;
}
*/

103
render/css.h
View File

@ -1,103 +0,0 @@
/**
* $Id: css.h,v 1.9 2002/12/27 20:13:18 bursa Exp $
*/
#ifndef _NETSURF_RENDER_CSS_H_
#define _NETSURF_RENDER_CSS_H_
#include "css_enum.h"
/**
* structures and typedefs
*/
typedef unsigned long colour; /* 0xbbggrr */
#define TRANSPARENT 0x1000000
#define CSS_COLOR_INHERIT 0x2000000
struct css_length {
float value;
css_unit unit;
};
struct css_style {
colour background_color;
css_clear clear;
colour color;
css_display display;
css_float float_;
struct {
enum { CSS_FONT_SIZE_INHERIT,
CSS_FONT_SIZE_ABSOLUTE,
CSS_FONT_SIZE_LENGTH,
CSS_FONT_SIZE_PERCENT } size;
union {
struct css_length length;
float absolute;
float percent;
} value;
} font_size;
css_font_weight font_weight;
css_font_style font_style;
struct {
enum { CSS_HEIGHT_INHERIT,
CSS_HEIGHT_AUTO,
CSS_HEIGHT_LENGTH } height;
struct css_length length;
} height;
struct {
enum { CSS_LINE_HEIGHT_INHERIT,
CSS_LINE_HEIGHT_ABSOLUTE,
CSS_LINE_HEIGHT_LENGTH,
CSS_LINE_HEIGHT_PERCENT } size;
union {
float absolute;
struct css_length length;
float percent;
} value;
} line_height;
css_text_align text_align;
struct {
enum { CSS_WIDTH_INHERIT,
CSS_WIDTH_AUTO,
CSS_WIDTH_LENGTH,
CSS_WIDTH_PERCENT } width;
union {
struct css_length length;
float percent;
} value;
} width;
};
struct css_stylesheet;
struct css_selector {
const char * element;
char * class;
char * id;
};
extern const struct css_style css_base_style;
extern const struct css_style css_empty_style;
extern const struct css_style css_blank_style;
/**
* interface
*/
struct css_stylesheet * css_new_stylesheet(void);
void css_get_style(struct css_stylesheet * stylesheet, struct css_selector * selector,
unsigned int selectors, struct css_style * style);
void css_parse_stylesheet(struct css_stylesheet * stylesheet, char * str);
void css_dump_style(const struct css_style * const style);
void css_dump_stylesheet(const struct css_stylesheet * stylesheet);
void css_cascade(struct css_style * const style, const struct css_style * const apply);
void css_parse_property_list(struct css_style * style, char * str);
#endif

62
render/html.c
View File

@ -1,10 +1,12 @@
/**
* $Id: html.c,v 1.6 2003/03/25 21:51:29 bursa Exp $
* $Id: html.c,v 1.7 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include "netsurf/content/fetch.h"
#include "netsurf/content/fetchcache.h"
#include "netsurf/desktop/gui.h"
#include "netsurf/render/html.h"
#include "netsurf/render/layout.h"
@ -12,6 +14,8 @@
#include "netsurf/utils/log.h"
static void html_convert_callback(fetchcache_msg msg, struct content *css,
void *p, const char *error);
static void html_title(struct content *c);
@ -42,8 +46,7 @@ void html_process_data(struct content *c, char *data, unsigned long size)
int html_convert(struct content *c, unsigned int width, unsigned int height)
{
char* file;
struct css_selector* selector = xcalloc(1, sizeof(struct css_selector));
struct css_selector* selector = xcalloc(1, sizeof(struct css_selector));
htmlParseChunk(c->data.html.parser, "", 0, 1);
c->data.html.document = c->data.html.parser->myDoc;
@ -70,16 +73,26 @@ int html_convert(struct content *c, unsigned int width, unsigned int height)
html_title(c);
/* TODO: rewrite stylesheet handling */
LOG(("Loading CSS"));
file = load("<NetSurf$Dir>.Resources.CSS"); /*!!! not portable! !!!*/
c->data.html.stylesheet = css_new_stylesheet();
LOG(("Parsing stylesheet"));
css_parse_stylesheet(c->data.html.stylesheet, file);
c->error = 0;
c->active = 0;
LOG(("Copying base style"));
c->data.html.style = xcalloc(1, sizeof(struct css_style));
memcpy(c->data.html.style, &css_base_style, sizeof(struct css_style));
fetchcache("file:///%3CNetSurf$Dir%3E/Resources/CSS", 0,
html_convert_callback, c, width, height);
c->active++;
while (c->active != 0) {
fetch_poll();
gui_multitask();
}
if (c->error) {
/* TODO: clean up */
return 1;
}
LOG(("Copying base style"));
c->data.html.style = xcalloc(1, sizeof(struct css_style));
memcpy(c->data.html.style, &css_base_style, sizeof(struct css_style));
LOG(("Creating box"));
c->data.html.layout = xcalloc(1, sizeof(struct box));
@ -105,6 +118,31 @@ int html_convert(struct content *c, unsigned int width, unsigned int height)
}
void html_convert_callback(fetchcache_msg msg, struct content *css,
void *p, const char *error)
{
struct content *c = p;
switch (msg) {
case FETCHCACHE_OK:
/* TODO: store struct content *css somewhere in c */
c->data.html.stylesheet = css->data.css;
c->active--;
break;
case FETCHCACHE_BADTYPE:
case FETCHCACHE_ERROR:
c->active--;
c->error = 1;
break;
case FETCHCACHE_STATUS:
/* TODO: need to add a way of sending status to the
* owning window */
break;
default:
assert(0);
}
}
void html_title(struct content *c)
{
xmlNode *node = c->data.html.markup;

4
render/layout.c
View File

@ -1,5 +1,5 @@
/**
* $Id: layout.c,v 1.36 2003/03/25 21:51:29 bursa Exp $
* $Id: layout.c,v 1.37 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
@ -10,7 +10,7 @@
#include "libxml/HTMLparser.h"
#include "netsurf/desktop/gui.h"
#include "netsurf/render/box.h"
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "netsurf/render/layout.h"
#include "netsurf/riscos/font.h"
#include "netsurf/utils/utils.h"

3
riscos/filetype.c
View File

@ -1,5 +1,5 @@
/**
* $Id: filetype.c,v 1.1 2003/03/15 15:53:20 bursa Exp $
* $Id: filetype.c,v 1.2 2003/04/04 15:19:31 bursa Exp $
*/
#include <stdlib.h>
@ -15,6 +15,7 @@ struct type_entry {
char mime_type[16];
};
static const struct type_entry type_map[] = {
{0x0cc, "text/css"},
{0xc85, "image/jpeg"},
{0xfaf, "text/html"},
{0xfff, "text/plain"},

4
riscos/font.c
View File

@ -1,11 +1,11 @@
/**
* $Id: font.c,v 1.12 2003/03/04 11:59:35 bursa Exp $
* $Id: font.c,v 1.13 2003/04/04 15:19:31 bursa Exp $
*/
#include <assert.h>
#include <stdio.h>
#include "libutf-8/utf-8.h"
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "netsurf/riscos/font.h"
#include "netsurf/utils/utils.h"
#include "netsurf/desktop/gui.h"

4
riscos/font.h
View File

@ -1,5 +1,5 @@
/**
* $Id: font.h,v 1.6 2003/03/03 22:40:39 bursa Exp $
* $Id: font.h,v 1.7 2003/04/04 15:19:32 bursa Exp $
*/
#ifndef _NETSURF_RISCOS_FONT_H_
@ -9,7 +9,7 @@
* structures and typedefs
*/
#include "netsurf/render/css.h"
#include "netsurf/css/css.h"
#include "oslib/font.h"
typedef unsigned int font_id;