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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2000 Ximian, Inc.
*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include "camel-mime-filter-linewrap.h"
static void filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
static void complete (CamelMimeFilter *f, char *in, size_t len,
size_t prespace, char **out, size_t *outlen,
size_t *outprespace);
static void reset (CamelMimeFilter *f);
static void
camel_mime_filter_linewrap_class_init (CamelMimeFilterLinewrapClass *klass)
{
CamelMimeFilterClass *mime_filter_class =
(CamelMimeFilterClass *) klass;
mime_filter_class->filter = filter;
mime_filter_class->complete = complete;
mime_filter_class->reset = reset;
}
CamelType
camel_mime_filter_linewrap_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register (camel_mime_filter_get_type(), "CamelMimeFilterLinewrap",
sizeof (CamelMimeFilterLinewrap),
sizeof (CamelMimeFilterLinewrapClass),
(CamelObjectClassInitFunc) camel_mime_filter_linewrap_class_init,
NULL,
NULL,
NULL);
}
return type;
}
static void
filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterLinewrap *linewrap = (CamelMimeFilterLinewrap *)f;
char *inend, *last, *p, *q;
int nchars = linewrap->nchars;
/* we'll be adding chars here so we need a bigger buffer */
camel_mime_filter_set_size (f, 3 * len, FALSE);
p = in;
q = f->outbuf;
inend = in + len;
while (p < inend) {
if (*p == '\n') {
last = q;
*q++ = *p++;
nchars = 0;
} else if (isspace (*p)) {
last = q;
if (nchars >= linewrap->wrap_len) {
*q++ = '\n';
p++;
nchars = 0;
} else {
*q++ = *p++;
}
} else {
*q++ = *p++;
nchars++;
}
/* line is getting way too long, we must force a wrap here */
if (nchars >= (linewrap->max_len - 1) && *p != '\n') {
*q++ = '\n';
*q++ = linewrap->indent;
nchars = 0;
}
}
linewrap->nchars = nchars;
*out = f->outbuf;
*outlen = q - f->outbuf;
*outprespace = f->outpre;
}
static void
complete (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
if (len)
filter (f, in, len, prespace, out, outlen, outprespace);
}
static void
reset (CamelMimeFilter *f)
{
CamelMimeFilterLinewrap *linewrap = (CamelMimeFilterLinewrap *)f;
linewrap->nchars = 0;
}
CamelMimeFilter *
camel_mime_filter_linewrap_new (guint preferred_len, guint max_len, char indent_char)
{
CamelMimeFilterLinewrap *linewrap =
CAMEL_MIME_FILTER_LINEWRAP (camel_object_new (CAMEL_MIME_FILTER_LINEWRAP_TYPE));
linewrap->indent = indent_char;
linewrap->wrap_len = preferred_len;
linewrap->max_len = max_len;
linewrap->nchars = 0;
return (CamelMimeFilter *) linewrap;
}
|
