diff options
author | rsc <devnull@localhost> | 2004-05-15 23:55:53 +0000 |
---|---|---|
committer | rsc <devnull@localhost> | 2004-05-15 23:55:53 +0000 |
commit | 61f5c35c9465f0702739b41249a664d409f0482c (patch) | |
tree | 17546b7dcc76abd9ee74dc7543cc77121acfe39a /src/cmd/postscript/common/getopt.c | |
parent | 173302913ebce353eadcbb12d71c3759cbe79e34 (diff) | |
download | plan9port-61f5c35c9465f0702739b41249a664d409f0482c.tar.gz plan9port-61f5c35c9465f0702739b41249a664d409f0482c.tar.bz2 plan9port-61f5c35c9465f0702739b41249a664d409f0482c.zip |
more files
Diffstat (limited to 'src/cmd/postscript/common/getopt.c')
-rw-r--r-- | src/cmd/postscript/common/getopt.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/cmd/postscript/common/getopt.c b/src/cmd/postscript/common/getopt.c new file mode 100644 index 00000000..cf6619f7 --- /dev/null +++ b/src/cmd/postscript/common/getopt.c @@ -0,0 +1,56 @@ +#ifndef _POSIX_SOURCE +#include <u.h> +#include <libc.h> +#endif +#include <stdio.h> +#define ERR(str, chr) if(opterr){fprintf(stderr, "%s%s%c\n", argv[0], str, chr);} +int opterr = 1; +int optind = 1; +int optopt; +char *optarg; +char *strchr(); + +int +getopt (argc, argv, opts) +char **argv, *opts; +{ + static int sp = 1; + register c; + register char *cp; + + if (sp == 1) + if (optind >= argc || + argv[optind][0] != '-' || argv[optind][1] == '\0') + return EOF; + else if (strcmp(argv[optind], "--") == NULL) { + optind++; + return EOF; + } + optopt = c = argv[optind][sp]; + if (c == ':' || (cp=strchr(opts, c)) == NULL) { + ERR (": illegal option -- ", c); + if (argv[optind][++sp] == '\0') { + optind++; + sp = 1; + } + return '?'; + } + if (*++cp == ':') { + if (argv[optind][sp+1] != '\0') + optarg = &argv[optind++][sp+1]; + else if (++optind >= argc) { + ERR (": option requires an argument -- ", c); + sp = 1; + return '?'; + } else + optarg = argv[optind++]; + sp = 1; + } else { + if (argv[optind][++sp] == '\0') { + sp = 1; + optind++; + } + optarg = NULL; + } + return c; +} |