| 1 |
/* Getopt for Microsoft C |
| 2 |
This code is a modification of the Free Software Foundation, Inc. |
| 3 |
Getopt library for parsing command line argument the purpose was |
| 4 |
to provide a Microsoft Visual C friendly derivative. This code |
| 5 |
provides functionality for both Unicode and Multibyte builds. |
| 6 |
|
| 7 |
Date: 02/03/2011 - Ludvik Jerabek - Initial Release |
| 8 |
Version: 1.0 |
| 9 |
Comment: Supports getopt, getopt_long, and getopt_long_only |
| 10 |
and POSIXLY_CORRECT environment flag |
| 11 |
License: LGPL |
| 12 |
|
| 13 |
Revisions: |
| 14 |
|
| 15 |
02/03/2011 - Ludvik Jerabek - Initial Release |
| 16 |
02/20/2011 - Ludvik Jerabek - Fixed compiler warnings at Level 4 |
| 17 |
07/05/2011 - Ludvik Jerabek - Added no_argument, required_argument, optional_argument defs |
| 18 |
08/03/2011 - Ludvik Jerabek - Fixed non-argument runtime bug which caused runtime exception |
| 19 |
08/09/2011 - Ludvik Jerabek - Added code to export functions for DLL and LIB |
| 20 |
02/15/2012 - Ludvik Jerabek - Fixed _GETOPT_THROW definition missing in implementation file |
| 21 |
|
| 22 |
**DISCLAIMER** |
| 23 |
THIS MATERIAL IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, |
| 24 |
EITHER EXPRESS OR IMPLIED, INCLUDING, BUT Not LIMITED TO, THE |
| 25 |
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
| 26 |
PURPOSE, OR NON-INFRINGEMENT. SOME JURISDICTIONS DO NOT ALLOW THE |
| 27 |
EXCLUSION OF IMPLIED WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT |
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APPLY TO YOU. IN NO EVENT WILL I BE LIABLE TO ANY PARTY FOR ANY |
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DIRECT, INDIRECT, SPECIAL OR OTHER CONSEQUENTIAL DAMAGES FOR ANY |
| 30 |
USE OF THIS MATERIAL INCLUDING, WITHOUT LIMITATION, ANY LOST |
| 31 |
PROFITS, BUSINESS INTERRUPTION, LOSS OF PROGRAMS OR OTHER DATA ON |
| 32 |
YOUR INFORMATION HANDLING SYSTEM OR OTHERWISE, EVEN If WE ARE |
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EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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*/ |
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|
| 36 |
#define _CRT_SECURE_NO_WARNINGS |
| 37 |
#include <stdlib.h> |
| 38 |
#include <stdio.h> |
| 39 |
#include "getopt.h" |
| 40 |
|
| 41 |
#ifdef __cplusplus |
| 42 |
#define _GETOPT_THROW throw() |
| 43 |
#else |
| 44 |
#define _GETOPT_THROW |
| 45 |
#endif |
| 46 |
|
| 47 |
enum ENUM_ORDERING { REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER }; |
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|
| 49 |
struct _getopt_data |
| 50 |
{ |
| 51 |
int optind; |
| 52 |
int opterr; |
| 53 |
int optopt; |
| 54 |
TCHAR *optarg; |
| 55 |
int __initialized; |
| 56 |
TCHAR *__nextchar; |
| 57 |
int __ordering; |
| 58 |
int __posixly_correct; |
| 59 |
int __first_nonopt; |
| 60 |
int __last_nonopt; |
| 61 |
}; |
| 62 |
|
| 63 |
static struct _getopt_data getopt_data; |
| 64 |
|
| 65 |
TCHAR *optarg; |
| 66 |
int optind = 1; |
| 67 |
int opterr = 1; |
| 68 |
int optopt = _T('?'); |
| 69 |
|
| 70 |
static void exchange(TCHAR **argv, struct _getopt_data *d) |
| 71 |
{ |
| 72 |
int bottom = d->__first_nonopt; |
| 73 |
int middle = d->__last_nonopt; |
| 74 |
int top = d->optind; |
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TCHAR *tem; |
| 76 |
while (top > middle && middle > bottom) |
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{ |
| 78 |
if (top - middle > middle - bottom) |
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{ |
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int len = middle - bottom; |
| 81 |
register int i; |
| 82 |
for (i = 0; i < len; i++) |
| 83 |
{ |
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tem = argv[bottom + i]; |
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argv[bottom + i] = argv[top - (middle - bottom) + i]; |
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argv[top - (middle - bottom) + i] = tem; |
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} |
| 88 |
top -= len; |
| 89 |
} |
| 90 |
else |
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{ |
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int len = top - middle; |
| 93 |
register int i; |
| 94 |
for (i = 0; i < len; i++) |
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{ |
| 96 |
tem = argv[bottom + i]; |
| 97 |
argv[bottom + i] = argv[middle + i]; |
| 98 |
argv[middle + i] = tem; |
| 99 |
} |
| 100 |
bottom += len; |
| 101 |
} |
| 102 |
} |
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d->__first_nonopt += (d->optind - d->__last_nonopt); |
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d->__last_nonopt = d->optind; |
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} |
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|
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|
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static const TCHAR *_getopt_initialize (const TCHAR *optstring, struct _getopt_data *d, int posixly_correct) |
| 109 |
{ |
| 110 |
d->__first_nonopt = d->__last_nonopt = d->optind; |
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d->__nextchar = NULL; |
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d->__posixly_correct = posixly_correct | !!_tgetenv(_T("POSIXLY_CORRECT")); |
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|
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|
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if (optstring[0] == _T('-')) |
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{ |
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d->__ordering = RETURN_IN_ORDER; |
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++optstring; |
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} |
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else if (optstring[0] == _T('+')) |
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{ |
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d->__ordering = REQUIRE_ORDER; |
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++optstring; |
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} |
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else if (d->__posixly_correct) |
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d->__ordering = REQUIRE_ORDER; |
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else |
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d->__ordering = PERMUTE; |
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return optstring; |
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} |
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|
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int _getopt_internal_r (int argc, TCHAR *const *argv, const TCHAR *optstring, const struct option *longopts, int *longind, int long_only, struct _getopt_data *d, int posixly_correct) |
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{ |
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int print_errors = d->opterr; |
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|
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if (argc < 1) |
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return -1; |
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|
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d->optarg = NULL; |
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|
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if (d->optind == 0 || !d->__initialized) |
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{ |
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if (d->optind == 0) |
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d->optind = 1; |
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optstring = _getopt_initialize (optstring, d, posixly_correct); |
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d->__initialized = 1; |
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} |
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else if (optstring[0] == _T('-') || optstring[0] == _T('+')) |
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optstring++; |
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if (optstring[0] == _T(':')) |
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print_errors = 0; |
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|
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if (d->__nextchar == NULL || *d->__nextchar == _T('\0')) |
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{ |
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if (d->__last_nonopt > d->optind) |
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d->__last_nonopt = d->optind; |
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if (d->__first_nonopt > d->optind) |
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d->__first_nonopt = d->optind; |
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|
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if (d->__ordering == PERMUTE) |
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{ |
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if (d->__first_nonopt != d->__last_nonopt && d->__last_nonopt != d->optind) |
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exchange ((TCHAR **) argv, d); |
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else if (d->__last_nonopt != d->optind) |
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d->__first_nonopt = d->optind; |
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|
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while (d->optind < argc && (argv[d->optind][0] != _T('-') || argv[d->optind][1] == _T('\0'))) |
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d->optind++; |
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d->__last_nonopt = d->optind; |
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} |
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|
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if (d->optind != argc && !_tcscmp(argv[d->optind], _T("--"))) |
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{ |
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d->optind++; |
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|
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if (d->__first_nonopt != d->__last_nonopt && d->__last_nonopt != d->optind) |
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exchange ((TCHAR **) argv, d); |
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else if (d->__first_nonopt == d->__last_nonopt) |
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d->__first_nonopt = d->optind; |
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d->__last_nonopt = argc; |
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|
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d->optind = argc; |
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} |
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|
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if (d->optind == argc) |
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{ |
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if (d->__first_nonopt != d->__last_nonopt) |
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d->optind = d->__first_nonopt; |
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return -1; |
| 190 |
} |
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|
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if ((argv[d->optind][0] != _T('-') || argv[d->optind][1] == _T('\0'))) |
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{ |
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if (d->__ordering == REQUIRE_ORDER) |
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return -1; |
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d->optarg = argv[d->optind++]; |
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return 1; |
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} |
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|
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d->__nextchar = (argv[d->optind] + 1 + (longopts != NULL && argv[d->optind][1] == _T('-'))); |
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} |
| 202 |
|
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if (longopts != NULL && (argv[d->optind][1] == _T('-') || (long_only && (argv[d->optind][2] || !_tcschr(optstring, argv[d->optind][1]))))) |
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{ |
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TCHAR *nameend; |
| 206 |
const struct option *p; |
| 207 |
const struct option *pfound = NULL; |
| 208 |
int exact = 0; |
| 209 |
int ambig = 0; |
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int indfound = -1; |
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int option_index; |
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|
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for (nameend = d->__nextchar; *nameend && *nameend != _T('='); nameend++); |
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|
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for (p = longopts, option_index = 0; p->name; p++, option_index++) |
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if (!_tcsncmp(p->name, d->__nextchar, nameend - d->__nextchar)) |
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{ |
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if ((unsigned int)(nameend - d->__nextchar) == (unsigned int)_tcslen(p->name)) |
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{ |
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pfound = p; |
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indfound = option_index; |
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exact = 1; |
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break; |
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} |
| 225 |
else if (pfound == NULL) |
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{ |
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pfound = p; |
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indfound = option_index; |
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} |
| 230 |
else if (long_only || pfound->has_arg != p->has_arg || pfound->flag != p->flag || pfound->val != p->val) |
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ambig = 1; |
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} |
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|
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if (ambig && !exact) |
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{ |
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if (print_errors) |
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{ |
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_ftprintf(stderr, _T("%s: option '%s' is ambiguous\n"), |
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argv[0], argv[d->optind]); |
| 240 |
} |
| 241 |
d->__nextchar += _tcslen(d->__nextchar); |
| 242 |
d->optind++; |
| 243 |
d->optopt = 0; |
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return _T('?'); |
| 245 |
} |
| 246 |
|
| 247 |
if (pfound != NULL) |
| 248 |
{ |
| 249 |
option_index = indfound; |
| 250 |
d->optind++; |
| 251 |
if (*nameend) |
| 252 |
{ |
| 253 |
if (pfound->has_arg) |
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d->optarg = nameend + 1; |
| 255 |
else |
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{ |
| 257 |
if (print_errors) |
| 258 |
{ |
| 259 |
if (argv[d->optind - 1][1] == _T('-')) |
| 260 |
{ |
| 261 |
_ftprintf(stderr, _T("%s: option '--%s' doesn't allow an argument\n"),argv[0], pfound->name); |
| 262 |
} |
| 263 |
else |
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{ |
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_ftprintf(stderr, _T("%s: option '%c%s' doesn't allow an argument\n"),argv[0], argv[d->optind - 1][0],pfound->name); |
| 266 |
} |
| 267 |
|
| 268 |
} |
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|
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d->__nextchar += _tcslen(d->__nextchar); |
| 271 |
|
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d->optopt = pfound->val; |
| 273 |
return _T('?'); |
| 274 |
} |
| 275 |
} |
| 276 |
else if (pfound->has_arg == 1) |
| 277 |
{ |
| 278 |
if (d->optind < argc) |
| 279 |
d->optarg = argv[d->optind++]; |
| 280 |
else |
| 281 |
{ |
| 282 |
if (print_errors) |
| 283 |
{ |
| 284 |
_ftprintf(stderr,_T("%s: option '--%s' requires an argument\n"),argv[0], pfound->name); |
| 285 |
} |
| 286 |
d->__nextchar += _tcslen(d->__nextchar); |
| 287 |
d->optopt = pfound->val; |
| 288 |
return optstring[0] == _T(':') ? _T(':') : _T('?'); |
| 289 |
} |
| 290 |
} |
| 291 |
d->__nextchar += _tcslen(d->__nextchar); |
| 292 |
if (longind != NULL) |
| 293 |
*longind = option_index; |
| 294 |
if (pfound->flag) |
| 295 |
{ |
| 296 |
*(pfound->flag) = pfound->val; |
| 297 |
return 0; |
| 298 |
} |
| 299 |
return pfound->val; |
| 300 |
} |
| 301 |
|
| 302 |
if (!long_only || argv[d->optind][1] == _T('-') || _tcschr(optstring, *d->__nextchar) == NULL) |
| 303 |
{ |
| 304 |
if (print_errors) |
| 305 |
{ |
| 306 |
if (argv[d->optind][1] == _T('-')) |
| 307 |
{ |
| 308 |
/* --option */ |
| 309 |
_ftprintf(stderr, _T("%s: unrecognized option '--%s'\n"),argv[0], d->__nextchar); |
| 310 |
} |
| 311 |
else |
| 312 |
{ |
| 313 |
/* +option or -option */ |
| 314 |
_ftprintf(stderr, _T("%s: unrecognized option '%c%s'\n"),argv[0], argv[d->optind][0], d->__nextchar); |
| 315 |
} |
| 316 |
} |
| 317 |
d->__nextchar = (TCHAR *)_T(""); |
| 318 |
d->optind++; |
| 319 |
d->optopt = 0; |
| 320 |
return _T('?'); |
| 321 |
} |
| 322 |
} |
| 323 |
|
| 324 |
{ |
| 325 |
TCHAR c = *d->__nextchar++; |
| 326 |
TCHAR *temp = (TCHAR*)_tcschr(optstring, c); |
| 327 |
|
| 328 |
if (*d->__nextchar == _T('\0')) |
| 329 |
++d->optind; |
| 330 |
|
| 331 |
if (temp == NULL || c == _T(':') || c == _T(';')) |
| 332 |
{ |
| 333 |
if (print_errors) |
| 334 |
{ |
| 335 |
_ftprintf(stderr, _T("%s: invalid option -- '%c'\n"), argv[0], c); |
| 336 |
} |
| 337 |
d->optopt = c; |
| 338 |
return _T('?'); |
| 339 |
} |
| 340 |
if (temp[0] == _T('W') && temp[1] == _T(';')) |
| 341 |
{ |
| 342 |
TCHAR *nameend; |
| 343 |
const struct option *p; |
| 344 |
const struct option *pfound = NULL; |
| 345 |
int exact = 0; |
| 346 |
int ambig = 0; |
| 347 |
int indfound = 0; |
| 348 |
int option_index; |
| 349 |
|
| 350 |
if (*d->__nextchar != _T('\0')) |
| 351 |
{ |
| 352 |
d->optarg = d->__nextchar; |
| 353 |
d->optind++; |
| 354 |
} |
| 355 |
else if (d->optind == argc) |
| 356 |
{ |
| 357 |
if (print_errors) |
| 358 |
{ |
| 359 |
_ftprintf(stderr, |
| 360 |
_T("%s: option requires an argument -- '%c'\n"), |
| 361 |
argv[0], c); |
| 362 |
} |
| 363 |
d->optopt = c; |
| 364 |
if (optstring[0] == _T(':')) |
| 365 |
c = _T(':'); |
| 366 |
else |
| 367 |
c = _T('?'); |
| 368 |
return c; |
| 369 |
} |
| 370 |
else |
| 371 |
d->optarg = argv[d->optind++]; |
| 372 |
|
| 373 |
for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != _T('='); nameend++); |
| 374 |
|
| 375 |
for (p = longopts, option_index = 0; p->name; p++, option_index++) |
| 376 |
if (!_tcsncmp(p->name, d->__nextchar, nameend - d->__nextchar)) |
| 377 |
{ |
| 378 |
if ((unsigned int) (nameend - d->__nextchar) == _tcslen(p->name)) |
| 379 |
{ |
| 380 |
pfound = p; |
| 381 |
indfound = option_index; |
| 382 |
exact = 1; |
| 383 |
break; |
| 384 |
} |
| 385 |
else if (pfound == NULL) |
| 386 |
{ |
| 387 |
pfound = p; |
| 388 |
indfound = option_index; |
| 389 |
} |
| 390 |
else if (long_only || pfound->has_arg != p->has_arg || pfound->flag != p->flag || pfound->val != p->val) |
| 391 |
ambig = 1; |
| 392 |
} |
| 393 |
if (ambig && !exact) |
| 394 |
{ |
| 395 |
if (print_errors) |
| 396 |
{ |
| 397 |
_ftprintf(stderr, _T("%s: option '-W %s' is ambiguous\n"), |
| 398 |
argv[0], d->optarg); |
| 399 |
} |
| 400 |
d->__nextchar += _tcslen(d->__nextchar); |
| 401 |
d->optind++; |
| 402 |
return _T('?'); |
| 403 |
} |
| 404 |
if (pfound != NULL) |
| 405 |
{ |
| 406 |
option_index = indfound; |
| 407 |
if (*nameend) |
| 408 |
{ |
| 409 |
if (pfound->has_arg) |
| 410 |
d->optarg = nameend + 1; |
| 411 |
else |
| 412 |
{ |
| 413 |
if (print_errors) |
| 414 |
{ |
| 415 |
_ftprintf(stderr, _T("\ |
| 416 |
%s: option '-W %s' doesn't allow an argument\n"), |
| 417 |
argv[0], pfound->name); |
| 418 |
} |
| 419 |
|
| 420 |
d->__nextchar += _tcslen(d->__nextchar); |
| 421 |
return _T('?'); |
| 422 |
} |
| 423 |
} |
| 424 |
else if (pfound->has_arg == 1) |
| 425 |
{ |
| 426 |
if (d->optind < argc) |
| 427 |
d->optarg = argv[d->optind++]; |
| 428 |
else |
| 429 |
{ |
| 430 |
if (print_errors) |
| 431 |
{ |
| 432 |
_ftprintf(stderr, _T("\ |
| 433 |
%s: option '-W %s' requires an argument\n"), |
| 434 |
argv[0], pfound->name); |
| 435 |
} |
| 436 |
d->__nextchar += _tcslen(d->__nextchar); |
| 437 |
return optstring[0] == _T(':') ? _T(':') : _T('?'); |
| 438 |
} |
| 439 |
} |
| 440 |
else |
| 441 |
d->optarg = NULL; |
| 442 |
d->__nextchar += _tcslen(d->__nextchar); |
| 443 |
if (longind != NULL) |
| 444 |
*longind = option_index; |
| 445 |
if (pfound->flag) |
| 446 |
{ |
| 447 |
*(pfound->flag) = pfound->val; |
| 448 |
return 0; |
| 449 |
} |
| 450 |
return pfound->val; |
| 451 |
} |
| 452 |
d->__nextchar = NULL; |
| 453 |
return _T('W'); |
| 454 |
} |
| 455 |
if (temp[1] == _T(':')) |
| 456 |
{ |
| 457 |
if (temp[2] == _T(':')) |
| 458 |
{ |
| 459 |
if (*d->__nextchar != _T('\0')) |
| 460 |
{ |
| 461 |
d->optarg = d->__nextchar; |
| 462 |
d->optind++; |
| 463 |
} |
| 464 |
else |
| 465 |
d->optarg = NULL; |
| 466 |
d->__nextchar = NULL; |
| 467 |
} |
| 468 |
else |
| 469 |
{ |
| 470 |
if (*d->__nextchar != _T('\0')) |
| 471 |
{ |
| 472 |
d->optarg = d->__nextchar; |
| 473 |
d->optind++; |
| 474 |
} |
| 475 |
else if (d->optind == argc) |
| 476 |
{ |
| 477 |
if (print_errors) |
| 478 |
{ |
| 479 |
_ftprintf(stderr, |
| 480 |
_T("%s: option requires an argument -- '%c'\n"), |
| 481 |
argv[0], c); |
| 482 |
} |
| 483 |
d->optopt = c; |
| 484 |
if (optstring[0] == _T(':')) |
| 485 |
c = _T(':'); |
| 486 |
else |
| 487 |
c = _T('?'); |
| 488 |
} |
| 489 |
else |
| 490 |
d->optarg = argv[d->optind++]; |
| 491 |
d->__nextchar = NULL; |
| 492 |
} |
| 493 |
} |
| 494 |
return c; |
| 495 |
} |
| 496 |
} |
| 497 |
|
| 498 |
int _getopt_internal (int argc, TCHAR *const *argv, const TCHAR *optstring, const struct option *longopts, int *longind, int long_only, int posixly_correct) |
| 499 |
{ |
| 500 |
int result; |
| 501 |
getopt_data.optind = optind; |
| 502 |
getopt_data.opterr = opterr; |
| 503 |
result = _getopt_internal_r (argc, argv, optstring, longopts,longind, long_only, &getopt_data,posixly_correct); |
| 504 |
optind = getopt_data.optind; |
| 505 |
optarg = getopt_data.optarg; |
| 506 |
optopt = getopt_data.optopt; |
| 507 |
return result; |
| 508 |
} |
| 509 |
|
| 510 |
int getopt (int argc, TCHAR *const *argv, const TCHAR *optstring) _GETOPT_THROW |
| 511 |
{ |
| 512 |
return _getopt_internal (argc, argv, optstring, (const struct option *) 0, (int *) 0, 0, 0); |
| 513 |
} |
| 514 |
|
| 515 |
int getopt_long (int argc, TCHAR *const *argv, const TCHAR *options, const struct option *long_options, int *opt_index) _GETOPT_THROW |
| 516 |
{ |
| 517 |
return _getopt_internal (argc, argv, options, long_options, opt_index, 0, 0); |
| 518 |
} |
| 519 |
|
| 520 |
int _getopt_long_r (int argc, TCHAR *const *argv, const TCHAR *options, const struct option *long_options, int *opt_index, struct _getopt_data *d) |
| 521 |
{ |
| 522 |
return _getopt_internal_r (argc, argv, options, long_options, opt_index,0, d, 0); |
| 523 |
} |
| 524 |
|
| 525 |
int getopt_long_only (int argc, TCHAR *const *argv, const TCHAR *options, const struct option *long_options, int *opt_index) _GETOPT_THROW |
| 526 |
{ |
| 527 |
return _getopt_internal (argc, argv, options, long_options, opt_index, 1, 0); |
| 528 |
} |
| 529 |
|
| 530 |
int _getopt_long_only_r (int argc, TCHAR *const *argv, const TCHAR *options, const struct option *long_options, int *opt_index, struct _getopt_data *d) |
| 531 |
{ |
| 532 |
return _getopt_internal_r (argc, argv, options, long_options, opt_index, 1, d, 0); |
| 533 |
} |
