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
|
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <mntent.h>
#include "internal.h"
#include "rcciconv.h"
#ifndef strndup
static char *rccStrndup(const char *str, size_t n) {
char *res;
n = STRNLEN(str, n);
res = (char*)malloc((n+1)*sizeof(char));
if (!res) return res;
strncpy(res, str, n);
res[n] = 0;
return res;
}
#define strndup rccStrndup
#endif /* !strndup */
static char *rccCreateFullName(const char *path, const char *filename) {
unsigned int i;
char *name;
if (!path) {
if (filename) return strdup(filename);
else return strdup("/");
} else if (!filename) return strdup(path);
i = strlen(path);
name = (char*)malloc((i+strlen(filename)+2)*sizeof(char));
if (!name) return NULL;
if ((path[i-1]=='/')||(filename[0]=='/'))
sprintf(name, "%s%s", path, filename);
else
sprintf(name, "%s/%s", path, filename);
return name;
}
static int rccIsFile(const char *filename) {
struct stat st;
stat(filename,&st);
if (S_ISREG(st.st_mode)) return 1;
return 0;
}
static char *rccCheckFile(const char *prefix, const char *name) {
char *temp;
temp = rccCreateFullName(prefix, name);
if ((!temp)||(rccIsFile(temp))) return temp;
free(temp);
return NULL;
}
/* Converts: 'filename' to 'prefix/name' using 'fspath' */
int rccFS0(rcc_context ctx, const char *fspath, const char *filename, char **prefix, char **name) {
FILE *mtab;
struct mntent *fsentry;
const char *tmp = NULL;
size_t len;
if (fspath) {
len = strlen(fspath);
if (!len) return 1;
if (!strncmp(filename, fspath, len)) tmp = filename + strlen(fspath);
} else {
/* only required with non-english mount directories */
len = strlen(ctx->lastprefix);
if ((len)&&(!strncmp(filename, ctx->lastprefix, len))) {
tmp = filename + len;
}
if (tmp) mtab = NULL;
else mtab = setmntent(_PATH_MNTTAB, "r");
if (mtab) {
while (!feof(mtab)) {
fsentry = getmntent(mtab);
if ((fsentry)&&(fsentry->mnt_dir)) {
len = strlen(fsentry->mnt_dir);
if (len) {
if (!strncmp(filename, fsentry->mnt_dir, len)) {
tmp = filename + len;
if (len<RCC_MAX_PREFIX_CHARS) strcpy(ctx->lastprefix, fsentry->mnt_dir);
break;
}
}
}
}
endmntent(mtab);
}
}
if (!tmp) return 1;
*name = strdup(tmp);
*prefix = strndup(filename, (tmp-filename));
if ((!*name)||(!*prefix)) {
if (*name) free(*name);
if (*prefix) free(*prefix);
return -1;
}
return 0;
}
/* Normalizes 'prefix/name' using 'fspath'
returns:
-1 Error
0 Okey
bit 1 Exact Match
bit 2 Memory cleanup isn't required
*/
int rccFS1(rcc_context ctx, const char *fspath, char **prefix, char **name) {
int err;
int prefix_size;
char *result, *tmp;
char *path, *filename;
path = *prefix;
filename = *name;
if ((path)&&(filename)) {
result = rccCreateFullName(path, filename);
if (!result) return -1;
} else if (filename) result = filename;
else if (path) result = path;
else return -1;
// Checking without recoding in case of autodetection
if (rccGetOption(ctx, RCC_AUTODETECT_FS_NAMES)) {
if (rccIsFile(result)) {
*prefix = NULL;
*name = result;
if ((path)&&(filename)) return 1;
return 3;
}
}
puts("--");
if (rccFS0(ctx, fspath, result, prefix, name)) {
*prefix = NULL;
*name = result;
if ((path)&&(filename)) return 0;
return 2;
}
puts("++");
if ((path)&&(filename)) free(result);
return 0;
}
/* Checks if 'prefix/name' is accessible using 'icnv' recoding. In case of
sucess returns pointer on statically allocated memory, and NULL overwise */
const char *rccFS2(rcc_context ctx, iconv_t icnv, const char *prefix, const char *name) {
int err;
if (icnv == (iconv_t)-1) return NULL;
if (icnv == (iconv_t)-2) {
strncpy(ctx->tmpbuffer, name, RCC_MAX_STRING_CHARS);
ctx->tmpbuffer[RCC_MAX_STRING_CHARS] = 0;
} else {
err = rccIConv(ctx, icnv, name, 0);
if (err<=0) return NULL;
}
return rccCheckFile(prefix, ctx->tmpbuffer);
}
/* Tries to find 'name' encoding in 'prefix/name' file. Returns pointer on
statically allocated string with correct filename or NULL. */
const char *rccFS3(rcc_context ctx, rcc_language_id language_id, rcc_class_id class_id, const char *prefix, const char *name) {
unsigned int i;
const char *result;
rcc_charset charset;
rcc_language *language;
iconv_t icnv = ctx->fsiconv;
if ((rccGetOption(ctx, RCC_AUTODETECT_FS_NAMES))&&(icnv != (iconv_t)-1)) {
result = rccFS2(ctx, icnv, prefix, name);
if (result) return result;
}
result = rccFS2(ctx, ctx->iconv_to[class_id], prefix, name);
if (result) {
if ((icnv != (iconv_t)-1)&&(icnv != (iconv_t)-2)) iconv_close(icnv);
ctx->fsiconv = (iconv_t)-1;
return result;
}
if (rccGetOption(ctx, RCC_AUTODETECT_FS_NAMES)) {
language = ctx->languages[language_id];
if (language->charsets[0]) {
for (i=1;(!result);i++) {
charset = language->charsets[i];
if (!charset) break;
if ((icnv != (iconv_t)-1)&&(icnv != (iconv_t)-2)) iconv_close(icnv);
if ((!strcmp(charset, "UTF-8"))||(!strcmp(charset, "UTF8"))) icnv = (iconv_t)-2;
else icnv = iconv_open(charset, "UTF-8");
result = rccFS2(ctx, icnv, prefix, name);
}
}
}
if (result) ctx->fsiconv = icnv;
else {
if ((icnv != (iconv_t)-1)&&(icnv != (iconv_t)-2)) iconv_close(icnv);
ctx->fsiconv = (iconv_t)-1;
}
return result;
}
|
