133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
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#ifdef __ORCAC__
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#pragma optimize 79
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#pragma noroot
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "flags.h"
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// like getopt.
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Flags flags;
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void help(void)
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{
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fputs("gopher [options] url\n", stdout);
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fputs("-h display help information.\n", stdout);
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fputs("-V display version information.\n", stdout);
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fputs("-i display http headers.\n", stdout);
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fputs("-I http HEAD\n", stdout);
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fputs("-O write output to file.\n", stdout);
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fputs("-o <file> write output to <file> instead of stdout.\n", stdout);
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fputs("-0 use HTTP 1.0\n", stdout);
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fputs("-9 use HTTP 0.9\n", stdout);
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fputs("\n", stdout);
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exit(0);
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}
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int ParseFlags(int argc, char **argv)
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{
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char *cp;
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char c;
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int i;
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int j;
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memset(&flags, 0, sizeof(flags));
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for (i = 1; i < argc; ++i)
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{
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cp = argv[i];
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c = cp[0];
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if (c != '-')
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return i;
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// -- = end of options.
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if (cp[1] == '-' && cp[2] == 0)
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return i + 1;
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// now scan all the flags in the string...
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for (j = 1; ; ++j)
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{
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int skip = 0;
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c = cp[j];
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if (c == 0) break;
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switch (c)
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{
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case 'h':
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help();
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break;
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case 'i':
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flags._i = 1;
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break;
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case 'I':
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flags._I = 1;
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break;
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case 'O':
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flags._O = 1;
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flags._o = 0;
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break;
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case 'v':
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flags._v = 1;
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break;
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case 'V':
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flags._V = 1;
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break;
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case '0':
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flags._0 = 1;
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flags._9 = 0;
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break;
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case '9':
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flags._9 = 1;
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flags._0 = 0;
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break;
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// take an argument...
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// -oarg or -o arg
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case 'o':
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flags._O = 0;
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skip = 1;
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if (cp[j + 1])
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flags._o = cp + j + 1;
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else
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{
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if (++i >= argc)
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{
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fprintf(stderr, "option requires an argument -- %c\n", c);
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return -1;
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}
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flags._o = argv[i];
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}
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break;
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default:
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fprintf(stderr, "illegal option -- %c\n", c);
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return -1;
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}
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if (skip) break;
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}
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}
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return i;
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}
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