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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* os_mac_conv.c: Code specifically for Mac string conversions.
*
* This code has been put in a separate file to avoid the conflicts that are
* caused by including both the X11 and Carbon header files.
*/
#define NO_X11_INCLUDES
#include "vim.h"
#ifdef FEAT_MBYTE
extern char_u *mac_string_convert __ARGS((char_u *ptr, int len, int *lenp, int fail_on_error, int from, int to, int *unconvlenp));
extern int macroman2enc __ARGS((char_u *ptr, long *sizep, long real_size));
extern int enc2macroman __ARGS((char_u *from, size_t fromlen, char_u *to, int *tolenp, int maxtolen, char_u *rest, int *restlenp));
/*
* A Mac version of string_convert_ext() for special cases.
*/
char_u *
mac_string_convert(ptr, len, lenp, fail_on_error, from_enc, to_enc, unconvlenp)
char_u *ptr;
int len;
int *lenp;
int fail_on_error;
int from_enc;
int to_enc;
int *unconvlenp;
{
char_u *retval, *d;
CFStringRef cfstr;
int buflen, in, out, l, i;
CFStringEncoding from;
CFStringEncoding to;
switch (from_enc)
{
case 'l': from = kCFStringEncodingISOLatin1; break;
case 'm': from = kCFStringEncodingMacRoman; break;
case 'u': from = kCFStringEncodingUTF8; break;
default: return NULL;
}
switch (to_enc)
{
case 'l': to = kCFStringEncodingISOLatin1; break;
case 'm': to = kCFStringEncodingMacRoman; break;
case 'u': to = kCFStringEncodingUTF8; break;
default: return NULL;
}
if (unconvlenp != NULL)
*unconvlenp = 0;
cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0);
/* When conversion failed, try excluding bytes from the end, helps when
* there is an incomplete byte sequence. Only do up to 6 bytes to avoid
* looping a long time when there really is something unconvertable. */
while (cfstr == NULL && unconvlenp != NULL && len > 1 && *unconvlenp < 6)
{
--len;
++*unconvlenp;
cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0);
}
if (cfstr == NULL)
return NULL;
if (to == kCFStringEncodingUTF8)
buflen = len * 6 + 1;
else
buflen = len + 1;
retval = alloc(buflen);
if (retval == NULL)
{
CFRelease(cfstr);
return NULL;
}
if (!CFStringGetCString(cfstr, retval, buflen, to))
{
CFRelease(cfstr);
if (fail_on_error)
{
vim_free(retval);
return NULL;
}
/* conversion failed for the whole string, but maybe it will work
* for each character */
for (d = retval, in = 0, out = 0; in < len && out < buflen - 1;)
{
if (from == kCFStringEncodingUTF8)
l = utf_ptr2len_check(ptr + in);
else
l = 1;
cfstr = CFStringCreateWithBytes(NULL, ptr + in, l, from, 0);
if (cfstr == NULL)
{
*d++ = '?';
out++;
}
else
{
if (!CFStringGetCString(cfstr, d, buflen - out, to))
{
*d++ = '?';
out++;
}
else
{
i = strlen(d);
d += i;
out += i;
}
CFRelease(cfstr);
}
in += l;
}
*d = NUL;
if (lenp != NULL)
*lenp = out;
return retval;
}
CFRelease(cfstr);
if (lenp != NULL)
*lenp = strlen(retval);
return retval;
}
/*
* Conversion from Apple MacRoman char encoding to UTF-8 or latin1, using
* standard Carbon framework.
* Input: "ptr[*sizep]".
* "real_size" is the size of the buffer that "ptr" points to.
* output is in-place, "sizep" is adjusted.
* Returns OK or FAIL.
*/
int
macroman2enc(ptr, sizep, real_size)
char_u *ptr;
long *sizep;
long real_size;
{
CFStringRef cfstr;
CFRange r;
CFIndex len = *sizep;
/* MacRoman is an 8-bit encoding, no need to move bytes to
* conv_rest[]. */
cfstr = CFStringCreateWithBytes(NULL, ptr, len,
kCFStringEncodingMacRoman, 0);
/*
* If there is a conversion error, try using another
* conversion.
*/
if (cfstr == NULL)
return FAIL;
r.location = 0;
r.length = CFStringGetLength(cfstr);
if (r.length != CFStringGetBytes(cfstr, r,
(enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
0, /* no lossy conversion */
0, /* not external representation */
ptr + *sizep, real_size - *sizep, &len))
{
CFRelease(cfstr);
return FAIL;
}
CFRelease(cfstr);
mch_memmove(ptr, ptr + *sizep, len);
*sizep = len;
return OK;
}
/*
* Conversion from UTF-8 or latin1 to MacRoman.
* Input: "from[fromlen]"
* Output: "to[maxtolen]" length in "*tolenp"
* Unconverted rest in rest[*restlenp].
* Returns OK or FAIL.
*/
int
enc2macroman(from, fromlen, to, tolenp, maxtolen, rest, restlenp)
char_u *from;
size_t fromlen;
char_u *to;
int *tolenp;
int maxtolen;
char_u *rest;
int *restlenp;
{
CFStringRef cfstr;
CFRange r;
CFIndex l;
*restlenp = 0;
cfstr = CFStringCreateWithBytes(NULL, from, fromlen,
(enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
0);
while (cfstr == NULL && *restlenp < 3 && fromlen > 1)
{
rest[*restlenp++] = from[--fromlen];
cfstr = CFStringCreateWithBytes(NULL, from, fromlen,
(enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
0);
}
if (cfstr == NULL)
return FAIL;
r.location = 0;
r.length = CFStringGetLength(cfstr);
if (r.length != CFStringGetBytes(cfstr, r,
kCFStringEncodingMacRoman,
0, /* no lossy conversion */
0, /* not external representation (since vim
* handles this internally */
to, maxtolen, &l))
{
CFRelease(cfstr);
return FAIL;
}
CFRelease(cfstr);
*tolenp = l;
return OK;
}
#endif /* FEAT_MBYTE */
|
