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1 /**************************************************************************** 1 /****************************************************************************
2 * getopt(): Return the next user option on each iteration. 2 * getopt(): Return the next user option on each iteration.
3 * This is a clone of the usual UNIX getopt() function. 3 * This is a clone of the usual UNIX getopt() function.
4 * If you have never used a getopt() before, you'll have to 4 * If you have never used a getopt() before, you'll have to
5 * read about it on any UNIX machine or other C system that 5 * read about it on any UNIX machine or other C system that
6 * documents it. 6 * documents it.
7 * 7 *
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62 * Date: April 12, 1990. 62 * Date: April 12, 1990.
63 * Comments: First released version. 63 * Comments: First released version.
64 * 64 *
65 ****************************************************************************/ 65 ****************************************************************************/
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-   66  
-   67 #if defined MWDEBUG
-   68 #include "memwatch.h"
-   69 #endif
66   70  
67 #ifndef __STDIO_H /* If we haven't already included stdio.h, do it. */ 71 #ifndef __STDIO_H /* If we haven't already included stdio.h, do it. */
68 # include <stdio.h> /* Maybe someday I'll eliminate this. */ 72 # include <stdio.h> /* Maybe someday I'll eliminate this. */
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69 #endif 73 #endif
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102   106  
103 /************************************************************************ 107 /************************************************************************
104 * Global variables. You must declare these externs in your program 108 * Global variables. You must declare these externs in your program
105 * if you want to see their values! 109 * if you want to see their values!
106 ************************************************************************/ 110 ************************************************************************/
107 111  
108 char *optarg = NULL; /* This will point to a required argument, if any. */ 112 char *optarg = NULL; /* This will point to a required argument, if any. */
109 int optind = 1; /* The index of the next argument in argv. */ 113 int optind = 1; /* The index of the next argument in argv. */
110 int opterr = 1; /* 1 == print internal error messages. 0 else. */ 114 int opterr = 1; /* 1 == print internal error messages. 0 else. */
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125 * Return EOF. 129 * Return EOF.
126 * If we have ONLY a DASH, and nothing after it... return EOF as well. 130 * If we have ONLY a DASH, and nothing after it... return EOF as well.
127 * If we have a DASH followed immediately by another DASH, this is the 131 * If we have a DASH followed immediately by another DASH, this is the
128 * special "--" option that means "no more options follow." Return EOF. 132 * special "--" option that means "no more options follow." Return EOF.
129 * Otherwise, we have an actual option or list of options. Process it. */ 133 * Otherwise, we have an actual option or list of options. Process it. */
130 134  
131 static int NextOption(char *argv[], char *optString) 135 static int NextOption(char *argv[], char *optString)
132 { 136 {
133 static int optsSkipped = 0; /* In a single argv[i]. */ 137 static int optsSkipped = 0; /* In a single argv[i]. */
134 138  
135 if ((argv[optind][0] == DASH) 139 if ((argv[optind][0] == DASH)
136 && ((optopt = argv[optind][1+optsSkipped]) != '\0')) 140 && ((optopt = argv[optind][1+optsSkipped]) != '\0'))
137 { 141 {
138 if (optopt == DASH) 142 if (optopt == DASH)
139 { 143 {
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156 * If the option is not legal (not in optString), complain and return 160 * If the option is not legal (not in optString), complain and return
157 * UNKNOWN_OPT. 161 * UNKNOWN_OPT.
158 * If the option requires no argument, just return the option letter. 162 * If the option requires no argument, just return the option letter.
159 * If the option requires an argument, call HandleArgument and return 163 * If the option requires an argument, call HandleArgument and return
160 * the option letter. */ 164 * the option letter. */
161 165  
162 static int RealOption(char *argv[], char *optString, int *optsSkipped, 166 static int RealOption(char *argv[], char *optString, int *optsSkipped,
163 int *optind, int optopt) 167 int *optind, int optopt)
164 { 168 {
165 char *where; /* Pointer to the letter in optString. */ 169 char *where; /* Pointer to the letter in optString. */
166 int argWasOK; /* An indication that a required arg was found. */ 170 int argWasOK; /* An indication that a required arg was found. */