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
|
/**
* \file file.c
*
* Time-stamp: "2010-07-10 11:00:59 bkorb"
*
* This file is part of AutoOpts, a companion to AutoGen.
* AutoOpts is free software.
* AutoOpts is Copyright (c) 1992-2011 by Bruce Korb - all rights reserved
*
* AutoOpts is available under any one of two licenses. The license
* in use must be one of these two and the choice is under the control
* of the user of the license.
*
* The GNU Lesser General Public License, version 3 or later
* See the files "COPYING.lgplv3" and "COPYING.gplv3"
*
* The Modified Berkeley Software Distribution License
* See the file "COPYING.mbsd"
*
* These files have the following md5sums:
*
* 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3
* 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3
* 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd
*/
/*=export_func optionFileCheck
* private:
*
* what: Decipher a boolean value
* arg: + tOptions* + pOpts + program options descriptor +
* arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
* arg: + teOptFileType + ftype + File handling type +
* arg: + tuFileMode + mode + file open mode (if needed) +
*
* doc:
* Make sure the named file conforms with the file type mode.
* The mode specifies if the file must exist, must not exist or may
* (or may not) exist. The mode may also specify opening the
* file: don't, open just the descriptor (fd), or open as a stream
* (FILE* pointer).
=*/
void
optionFileCheck(tOptions* pOpts, tOptDesc* pOD,
teOptFileType ftype, tuFileMode mode)
{
if (pOpts <= OPTPROC_EMIT_LIMIT) {
if (pOpts != OPTPROC_EMIT_USAGE)
return;
switch (ftype & FTYPE_MODE_EXIST_MASK) {
case FTYPE_MODE_MUST_NOT_EXIST:
fputs(zFileCannotExist, option_usage_fp);
break;
case FTYPE_MODE_MUST_EXIST:
fputs(zFileMustExist, option_usage_fp);
break;
}
return;
}
if ((pOD->fOptState & OPTST_RESET) != 0) {
if (pOD->optCookie != NULL)
AGFREE(pOD->optCookie);
return;
}
{
struct stat sb;
errno = 0;
switch (ftype & FTYPE_MODE_EXIST_MASK) {
case FTYPE_MODE_MUST_NOT_EXIST:
if ( (stat(pOD->optArg.argString, &sb) == 0)
|| (errno != ENOENT) ){
if (errno == 0)
errno = EINVAL;
fprintf(stderr, zFSOptError, errno, strerror(errno),
zFSOptErrNoExist, pOD->optArg.argString, pOD->pz_Name);
pOpts->pUsageProc(pOpts, EXIT_FAILURE);
/* NOTREACHED */
}
/* FALLTHROUGH */
default:
case FTYPE_MODE_MAY_EXIST:
{
char * p = strrchr(pOD->optArg.argString, DIRCH);
if (p == NULL)
break; /* assume "." always exists. */
*p = NUL;
if ( (stat(pOD->optArg.argString, &sb) != 0)
|| (errno = EINVAL, ! S_ISDIR(sb.st_mode)) ){
fprintf(stderr, zFSOptError, errno, strerror(errno),
zFSOptErrMayExist, pOD->optArg.argString, pOD->pz_Name);
pOpts->pUsageProc(pOpts, EXIT_FAILURE);
/* NOTREACHED */
}
if (p != NULL)
*p = DIRCH;
break;
}
case FTYPE_MODE_MUST_EXIST:
if ( (stat(pOD->optArg.argString, &sb) != 0)
|| (errno = EINVAL, ! S_ISREG(sb.st_mode)) ){
fprintf(stderr, zFSOptError, errno, strerror(errno),
zFSOptErrMustExist, pOD->optArg.argString,
pOD->pz_Name);
pOpts->pUsageProc(pOpts, EXIT_FAILURE);
/* NOTREACHED */
}
break;
}
}
switch (ftype & FTYPE_MODE_OPEN_MASK) {
default:
case FTYPE_MODE_NO_OPEN:
break;
case FTYPE_MODE_OPEN_FD:
{
int fd = open(pOD->optArg.argString, mode.file_flags);
if (fd < 0) {
fprintf(stderr, zFSOptError, errno, strerror(errno),
zFSOptErrOpen, pOD->optArg.argString, pOD->pz_Name);
pOpts->pUsageProc(pOpts, EXIT_FAILURE);
/* NOTREACHED */
}
if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0)
pOD->optCookie = (void *)pOD->optArg.argString;
else
AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name");
pOD->optArg.argFd = fd;
pOD->fOptState &= ~OPTST_ALLOC_ARG;
break;
}
case FTYPE_MODE_FOPEN_FP:
{
FILE* fp = fopen(pOD->optArg.argString, mode.file_mode);
if (fp == NULL) {
fprintf(stderr, zFSOptError, errno, strerror(errno),
zFSOptErrFopen, pOD->optArg.argString, pOD->pz_Name);
pOpts->pUsageProc(pOpts, EXIT_FAILURE);
/* NOTREACHED */
}
if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0)
pOD->optCookie = (void *)pOD->optArg.argString;
else
AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name");
pOD->optArg.argFp = fp;
pOD->fOptState &= ~OPTST_ALLOC_ARG;
break;
}
}
}
/*
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of autoopts/file.c */
|
