1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* This file is part of LibCSS.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
*/
#include <assert.h>
#include <string.h>
#include "bytecode/bytecode.h"
#include "bytecode/opcodes.h"
#include "parse/properties/properties.h"
#include "parse/properties/utils.h"
/**
* Parse font-weight
*
* \param c Parsing context
* \param vector Vector of tokens to process
* \param ctx Pointer to vector iteration context
* \param result Pointer to location to receive resulting style
* \return CSS_OK on success,
* CSS_NOMEM on memory exhaustion,
* CSS_INVALID if the input is not valid
*
* Post condition: \a *ctx is updated with the next token to process
* If the input is invalid, then \a *ctx remains unchanged.
*/
css_error css__parse_font_weight(css_language *c,
const parserutils_vector *vector, int *ctx,
css_style *result)
{
int orig_ctx = *ctx;
css_error error;
const css_token *token;
uint8_t flags = 0;
uint16_t value = 0;
bool match;
/* NUMBER (100, 200, 300, 400, 500, 600, 700, 800, 900) |
* IDENT (normal, bold, bolder, lighter, inherit) */
token = parserutils_vector_iterate(vector, ctx);
if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
token->type != CSS_TOKEN_NUMBER)) {
*ctx = orig_ctx;
return CSS_INVALID;
}
if ((lwc_string_caseless_isequal(
token->idata, c->strings[INHERIT],
&match) == lwc_error_ok && match)) {
flags |= FLAG_INHERIT;
} else if (token->type == CSS_TOKEN_NUMBER) {
size_t consumed = 0;
css_fixed num = css__number_from_lwc_string(token->idata,
true, &consumed);
/* Invalid if there are trailing characters */
if (consumed != lwc_string_length(token->idata)) {
*ctx = orig_ctx;
return CSS_INVALID;
}
switch (FIXTOINT(num)) {
case 100: value = FONT_WEIGHT_100; break;
case 200: value = FONT_WEIGHT_200; break;
case 300: value = FONT_WEIGHT_300; break;
case 400: value = FONT_WEIGHT_400; break;
case 500: value = FONT_WEIGHT_500; break;
case 600: value = FONT_WEIGHT_600; break;
case 700: value = FONT_WEIGHT_700; break;
case 800: value = FONT_WEIGHT_800; break;
case 900: value = FONT_WEIGHT_900; break;
default: *ctx = orig_ctx; return CSS_INVALID;
}
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[NORMAL],
&match) == lwc_error_ok && match)) {
value = FONT_WEIGHT_NORMAL;
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[BOLD],
&match) == lwc_error_ok && match)) {
value = FONT_WEIGHT_BOLD;
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[BOLDER],
&match) == lwc_error_ok && match)) {
value = FONT_WEIGHT_BOLDER;
} else if ((lwc_string_caseless_isequal(
token->idata, c->strings[LIGHTER],
&match) == lwc_error_ok && match)) {
value = FONT_WEIGHT_LIGHTER;
} else {
*ctx = orig_ctx;
return CSS_INVALID;
}
error = css__stylesheet_style_appendOPV(result,
CSS_PROP_FONT_WEIGHT,
flags,
value);
if (error != CSS_OK)
*ctx = orig_ctx;
return error;
}
|