source: trunk/tools/wrc/getopt.c@ 8237

Last change on this file since 8237 was 6115, checked in by bird, 24 years ago

From Apache/PHP. Had to fix handling of ':' options.
File size: 4.4 KB
Line 
1/* $Id: getopt.c,v 1.1 2001-06-26 00:17:56 bird Exp $ */
2/* Borrowed from Apache NT Port */
3
4#include <stdio.h>
5#include <string.h>
6#include <assert.h>
7#include <stdlib.h>
8#include "utils.h"
9#define OPTERRCOLON (1)
10#define OPTERRNF (2)
11#define OPTERRARG (3)
12
13
14char *ap_php_optarg;
15int ap_php_optind = 1;
16int ap_php_opterr = 1;
17int ap_php_optopt;
18
19static int
20ap_php_optiserr(int argc, char * const *argv, int oint, const char *optstr,
21 int optchr, int err)
22{
23 if (ap_php_opterr)
24 {
25 fprintf(stderr, "Error in argument %d, char %d: ", oint, optchr+1);
26 switch(err)
27 {
28 case OPTERRCOLON:
29 fprintf(stderr, ": in flags\n");
30 break;
31 case OPTERRNF:
32 fprintf(stderr, "option not found %c\n", argv[oint][optchr]);
33 break;
34 case OPTERRARG:
35 fprintf(stderr, "no argument for option %c\n", argv[oint][optchr]);
36 break;
37 default:
38 fprintf(stderr, "unknown\n");
39 break;
40 }
41 }
42 ap_php_optopt = argv[oint][optchr];
43 return('?');
44}
45
46int ap_php_getopt(int argc, char* const *argv, const char *optstr)
47{
48 static int optchr = 0;
49 static int dash = 0; /* have already seen the - */
50
51 char *cp;
52
53 if (ap_php_optind >= argc)
54 return(EOF);
55 if (!dash && (argv[ap_php_optind][0] != '-'))
56 return(EOF);
57 if (!dash && (argv[ap_php_optind][0] == '-') && !argv[ap_php_optind][1])
58 {
59 /*
60 * use to specify stdin. Need to let pgm process this and
61 * the following args
62 */
63 return(EOF);
64 }
65 if ((argv[ap_php_optind][0] == '-') && (argv[ap_php_optind][1] == '-'))
66 {
67 /* -- indicates end of args */
68 if (argv[ap_php_optind][2] == 'h')
69 {
70 ap_php_optind = argc;
71 return '*';
72 }
73 ap_php_optind++;
74 return(EOF);
75 }
76 if (!dash)
77 {
78 assert((argv[ap_php_optind][0] == '-') && argv[ap_php_optind][1]);
79 dash = 1;
80 optchr = 1;
81 }
82
83 /* Check if the guy tries to do a -: kind of flag */
84 assert(dash);
85 if (argv[ap_php_optind][optchr] == ':')
86 {
87 dash = 0;
88 ap_php_optind++;
89 return(ap_php_optiserr(argc, argv, ap_php_optind-1, optstr, optchr, OPTERRCOLON));
90 }
91 if (!(cp = strchr(optstr, argv[ap_php_optind][optchr])))
92 {
93 int errind = ap_php_optind;
94 int errchr = optchr;
95
96 if (!argv[ap_php_optind][optchr+1])
97 {
98 dash = 0;
99 ap_php_optind++;
100 }
101 else
102 optchr++;
103 return(ap_php_optiserr(argc, argv, errind, optstr, errchr, OPTERRNF));
104 }
105 if (cp[1] == ':')
106 {
107 dash = 0;
108 if (argv[ap_php_optind][optchr+1] == '\0')
109 {
110 if (++ap_php_optind == argc)
111 return(ap_php_optiserr(argc, argv, ap_php_optind-1, optstr, optchr, OPTERRARG));
112 ap_php_optarg = argv[ap_php_optind++];
113 }
114 else
115 {
116 ap_php_optarg = &argv[ap_php_optind][optchr+1];
117 ap_php_optind++;
118 }
119 return(*cp);
120 }
121 else
122 {
123 if (!argv[ap_php_optind][optchr+1])
124 {
125 dash = 0;
126 ap_php_optind++;
127 }
128 else
129 optchr++;
130 return(*cp);
131 }
132 assert(0);
133 return(0);
134}
135
136#ifdef TESTGETOPT
137int
138 main (int argc, char **argv)
139 {
140 int c;
141 extern char *ap_php_optarg;
142 extern int ap_php_optind;
143 int aflg = 0;
144 int bflg = 0;
145 int errflg = 0;
146 char *ofile = NULL;
147
148 while ((c = ap_php_getopt(argc, argv, "abo:")) != EOF)
149 switch (c) {
150 case 'a':
151 if (bflg)
152 errflg++;
153 else
154 aflg++;
155 break;
156 case 'b':
157 if (aflg)
158 errflg++;
159 else
160 bflg++;
161 break;
162 case 'o':
163 ofile = ap_php_optarg;
164 (void)printf("ofile = %s\n", ofile);
165 break;
166 case '?':
167 errflg++;
168 }
169 if (errflg) {
170 (void)fprintf(stderr,
171 "usage: cmd [-a|-b] [-o <filename>] files...\n");
172 exit (2);
173 }
174 for ( ; ap_php_optind < argc; ap_php_optind++)
175 (void)printf("%s\n", argv[ap_php_optind]);
176 return 0;
177 }
178
179#endif /* TESTGETOPT */
180
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