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greg |
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#ifndef lint |
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schorsch |
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static const char RCSid[] = "$Id: psort.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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greg |
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#endif |
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/* |
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* Program to sort a meta-file |
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* |
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* cc psort.c sort.o palloc.o mfio.o syscalls.o misc.o |
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*/ |
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#define MAXALLOC 1100 /* must be >= PBSIZE in sort.c */ |
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#include "meta.h" |
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char *progname; |
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int maxalloc = MAXALLOC; |
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static int val[5], extrema[5]; |
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main(argc, argv) |
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int argc; |
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char **argv; |
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{ |
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FILE *fp; |
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int i, pcompare(); |
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progname = *argv++; |
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argc--; |
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for (i = 0; i < 4 && argc && (**argv == '+' || **argv == '-'); i++) { |
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val[i] = (**argv == '+') ? 1 : -1; |
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switch (*(*argv+1)) { |
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case 'x': |
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extrema[i] = XMN; |
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break; |
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case 'y': |
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extrema[i] = YMN; |
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break; |
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case 'X': |
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extrema[i] = XMX; |
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break; |
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case 'Y': |
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extrema[i] = YMX; |
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break; |
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default: |
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sprintf(errmsg, "unknown option \"%s\"", *argv); |
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error(USER, errmsg); |
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break; |
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} |
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argv++; |
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argc--; |
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} |
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val[i] = 0; |
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if (argc) |
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while (argc) { |
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fp = efopen(*argv, "r"); |
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sort(fp, pcompare); |
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fclose(fp); |
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argv++; |
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argc--; |
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} |
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else |
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sort(stdin, pcompare); |
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writeof(stdout); |
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return(0); |
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} |
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pcompare(pp1, pp2) |
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PRIMITIVE **pp1, **pp2; |
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{ |
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register PRIMITIVE *p1 = *pp1, *p2 = *pp2; |
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register int i; |
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for (i = 0; val[i]; i++) |
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if (p1->xy[extrema[i]] > p2->xy[extrema[i]]) |
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return(val[i]); |
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else if (p1->xy[extrema[i]] < p2->xy[extrema[i]]) |
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return(-val[i]); |
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return(0); |
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} |