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/* Copyright (c) 1990 Regents of the University of California */ |
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/* Copyright (c) 1996 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "standard.h" |
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|
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#include "paths.h" |
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|
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#include <ctype.h> |
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|
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#include "object.h" |
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|
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#include "otypes.h" |
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|
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int xac; /* global xform argument count */ |
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int xfa; /* start of xf arguments */ |
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|
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XF tot; /* total transformation */ |
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int reverse; /* boolean true if scene inverted */ |
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int reverse; /* boolean true if scene mirrored */ |
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|
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int expand = 0; /* boolean true to expand commands */ |
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int invert = 0; /* boolean true to invert surfaces */ |
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|
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int expand = 1; /* boolean true to expand commands */ |
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|
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char *newmod = NULL; /* new modifier for surfaces */ |
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|
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char *idprefix = NULL; /* prefix for object identifiers */ |
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|
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#define ALIAS NUMOTYPE /* put alias at end of array */ |
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#define ALIAS NUMOTYPE /* put alias at end of array */ |
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|
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#define NUMTYPES (NUMOTYPE+1) /* total number of object types */ |
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#define NUMTYPES (NUMOTYPE+1) /* total number of object types */ |
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|
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FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */ |
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typedef struct { |
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short nsargs; /* # of string arguments */ |
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char **sarg; /* string arguments */ |
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short niargs; /* # of integer arguments */ |
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int *iarg; /* integer arguments */ |
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short nfargs; /* # of float arguments */ |
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double *farg; /* float arguments */ |
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} FUNARGS; |
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short tinvers[NUMOTYPE]; /* inverse types for surfaces */ |
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|
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#define MAXSTR 512 /* maximum string length */ |
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int nrept = 1; /* number of array repetitions */ |
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|
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FUNARGS *getfargs(); |
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char *malloc(); |
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extern char *malloc(), *fgets(), *fgetword(); |
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|
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#define progname (xav[0]) |
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char mainfn[MAXPATH]; /* main file name */ |
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FILE *mainfp = NULL; /* main file pointer */ |
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|
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#define progname (xav[0]) |
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|
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|
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main(argc, argv) /* get transform options and transform file */ |
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int argc; |
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char *argv[]; |
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{ |
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FILE *fopen(); |
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FILE *fp; |
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char *fname; |
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int a; |
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/* check for array */ |
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/* check for argument list file */ |
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for (a = 1; a < argc; a++) |
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if (!strcmp(argv[a], "-f")) |
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return(doargf(argc, argv, a)); |
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/* check for regular array */ |
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for (a = 1; a < argc; a++) |
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if (!strcmp(argv[a], "-a")) |
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return(doarray(argc, argv, a)); |
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|
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'm': |
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if (argv[a][2] || a+1 >= argc) |
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break; |
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newmod = argv[++a]; |
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continue; |
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case 'n': |
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if (argv[a][2] || a+1 >= argc) |
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break; |
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idprefix = argv[++a]; |
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continue; |
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case 'c': |
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if (argv[a][2]) |
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break; |
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expand = 0; |
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continue; |
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case 'e': |
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if (argv[a][2]) |
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break; |
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expand = 1; |
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continue; |
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case 'I': |
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if (argv[a][2]) |
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break; |
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invert = 1; |
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continue; |
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} |
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break; |
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} |
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|
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if (reverse = tot.sca < 0.0) |
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tot.sca = -tot.sca; |
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if (invert) |
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reverse = !reverse; |
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|
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if (a < argc && argv[a][0] == '-') { |
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fprintf(stderr, "%s: command line error at '%s'\n", |
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printf(" %s", xav[a]); |
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putchar('\n'); |
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/* transform input */ |
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if (xac == argc) |
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xform("standard input", stdin); |
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else |
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if (xac == argc) { |
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openmain(NULL); |
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xform(mainfn, mainfp); |
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} else |
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for (a = xac; a < argc; a++) { |
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if ((fp = fopen(argv[a], "r")) == NULL) { |
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fprintf(stderr, "%s: cannot open \"%s\"\n", |
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progname, argv[a]); |
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exit(1); |
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} |
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xform(argv[a], fp); |
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fclose(fp); |
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openmain(argv[a]); |
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xform(mainfn, mainfp); |
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} |
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|
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return(0); |
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} |
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|
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|
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doargf(ac, av, fi) /* take argument list from file */ |
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char **av; |
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int ac, fi; |
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{ |
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char *newav[256], **avp; |
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char argbuf[2048]; |
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char newid[128]; |
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char *oldid; |
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register char *cp; |
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FILE *argfp; |
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int n, i, k, newac, err; |
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|
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if (fi >= ac-1 || av[fi+1][0] == '-') { |
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fprintf(stderr, "%s: missing file for -f option\n", av[0]); |
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exit(1); |
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} |
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if ((argfp = fopen(av[fi+1], "r")) == NULL) { |
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fprintf(stderr, "%s: cannot open argument file \"%s\"\n", |
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av[0], av[fi+1]); |
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exit(1); |
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} |
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n = 0; /* count number of lines in file */ |
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while (fgets(argbuf, sizeof(argbuf), argfp) != NULL) |
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n++; |
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if (!n) { |
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fprintf(stderr, "%s: empty argument file \"%s\"\n", |
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av[0], av[fi+1]); |
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exit(1); |
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} |
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rewind(argfp); |
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nrept *= n; |
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err = 0; /* read each arg list and call main */ |
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for (k = 0; k < n; k++) { |
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fgets(argbuf, sizeof(argbuf), argfp); |
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avp = newav+2; |
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avp[0] = av[0]; |
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for (i = 1; i < fi; i++) |
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avp[i] = av[i]; |
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newac = i; |
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cp = argbuf; /* parse new words */ |
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for ( ; ; ) { |
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while (isspace(*cp)) /* nullify spaces */ |
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*cp++ = '\0'; |
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if (!*cp) /* all done? */ |
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break; |
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avp[newac++] = cp; /* add argument to list */ |
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while (*++cp && !isspace(*cp)) |
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; |
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} |
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for (i = fi+2; i < ac; i++) |
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avp[newac++] = av[i]; |
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avp[newac] = NULL; |
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oldid = NULL; |
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for (i = 2; i < newac; i++) |
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if (!strcmp(avp[i-1], "-n")) { |
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oldid = avp[i]; |
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avp[i] = newid; |
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break; |
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} |
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if (oldid == NULL) { |
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newav[0] = av[0]; |
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newav[1] = "-n"; |
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newav[2] = newid; |
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avp = newav; |
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newac += 2; |
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} |
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if (oldid == NULL) |
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sprintf(newid, "i%d", k); |
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else |
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sprintf(newid, "%s.%d", oldid, k); |
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err |= main(newac, avp); |
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} |
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fclose(argfp); |
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return(err); |
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} |
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|
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|
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doarray(ac, av, ai) /* make array */ |
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char **av; |
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int ac, ai; |
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char *newav[256], **avp; |
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char newid[128], repts[32]; |
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char *oldid = NULL; |
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int i, err; |
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int n, i, err; |
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|
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if (ai >= ac-1 || (n = atoi(av[ai+1])) <= 0) { |
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fprintf(stderr, "%s: missing count for -a option\n", av[0]); |
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exit(1); |
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} |
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nrept *= n; |
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avp = newav+2; |
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avp[0] = av[0]; |
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for (i = 1; i < ac; i++) |
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ac += 2; |
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} |
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err = 0; |
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for (i = 0; i < atoi(av[ai+1]); i++) { |
253 |
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for (i = 0; i < n; i++) { |
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if (oldid == NULL) |
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sprintf(newid, "a%d", i); |
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else |
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char *name; |
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register FILE *fin; |
268 |
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{ |
269 |
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int nobjs = 0; |
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register int c; |
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|
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while ((c = getc(fin)) != EOF) { |
282 |
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} else if (c == '!') { /* command */ |
283 |
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ungetc(c, fin); |
284 |
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xfcomm(name, fin); |
285 |
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nobjs++; |
286 |
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} else { /* object */ |
287 |
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ungetc(c, fin); |
288 |
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xfobject(name, fin); |
289 |
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nobjs++; |
290 |
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} |
291 |
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} |
292 |
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if (nobjs == 0) |
293 |
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fprintf(stderr, "%s: (%s): warning - empty file\n", |
294 |
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progname, name); |
295 |
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} |
296 |
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|
297 |
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|
298 |
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xfcomm(fname, fin) /* transform a command */ |
299 |
+ |
char *fname; |
300 |
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FILE *fin; |
301 |
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{ |
302 |
< |
FILE *popen(); |
303 |
< |
char *fgetline(); |
302 |
> |
extern FILE *popen(); |
303 |
> |
extern char *fgetline(); |
304 |
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FILE *pin; |
305 |
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char buf[512]; |
306 |
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int i; |
307 |
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|
308 |
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fgetline(buf, sizeof(buf), fin); |
309 |
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if (expand) { |
310 |
< |
if (xac > 2) { |
311 |
< |
if ((pin = popen(buf+1, "r")) == NULL) { |
312 |
< |
fprintf(stderr, |
313 |
< |
"%s: (%s): cannot execute \"%s\"\n", |
206 |
< |
progname, fname, buf); |
207 |
< |
exit(1); |
208 |
< |
} |
209 |
< |
xform(buf, pin); |
210 |
< |
pclose(pin); |
211 |
< |
} else { |
212 |
< |
fflush(stdout); |
213 |
< |
system(buf+1); |
310 |
> |
if ((pin = popen(buf+1, "r")) == NULL) { |
311 |
> |
fprintf(stderr, "%s: (%s): cannot execute \"%s\"\n", |
312 |
> |
progname, fname, buf); |
313 |
> |
exit(1); |
314 |
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} |
315 |
+ |
xform(buf, pin); |
316 |
+ |
pclose(pin); |
317 |
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} else { |
318 |
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printf("\n%s", buf); |
319 |
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if (xac > 1) { |
320 |
< |
printf(" | %s -e", xav[0]); |
320 |
> |
printf(" | %s", xav[0]); |
321 |
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for (i = 1; i < xac; i++) |
322 |
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printf(" %s", xav[i]); |
323 |
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} |
330 |
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char *fname; |
331 |
|
FILE *fin; |
332 |
|
{ |
333 |
< |
char stmp[MAXSTR]; |
333 |
> |
extern char *strcpy(); |
334 |
> |
char typ[16], nam[MAXSTR]; |
335 |
|
int fn; |
336 |
< |
|
337 |
< |
fscanf(fin, "%s", stmp); /* modifier */ |
338 |
< |
printf("\n%s ", stmp); |
339 |
< |
fscanf(fin, "%s", stmp); /* object type */ |
340 |
< |
if ((fn = otype(stmp)) < 0) { |
336 |
> |
/* modifier and type */ |
337 |
> |
strcpy(typ, "EOF"); |
338 |
> |
fgetword(nam, sizeof(nam), fin); |
339 |
> |
fgetword(typ, sizeof(typ), fin); |
340 |
> |
if ((fn = otype(typ)) < 0) { |
341 |
|
fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n", |
342 |
< |
progname, fname, stmp); |
342 |
> |
progname, fname, typ); |
343 |
|
exit(1); |
344 |
|
} |
345 |
< |
printf("%s ", stmp); |
346 |
< |
fscanf(fin, "%s", stmp); /* object name */ |
244 |
< |
if (idprefix != NULL && issurface(fn)) |
245 |
< |
printf("%s.%s\n", idprefix, stmp); |
345 |
> |
if (ismodifier(fn)) |
346 |
> |
printf("\n%s %s ", nam, typ); |
347 |
|
else |
348 |
< |
printf("%s\n", stmp); |
349 |
< |
/* transform arguments */ |
348 |
> |
printf("\n%s %s ", newmod != NULL ? newmod : nam, |
349 |
> |
invert ? ofun[tinvers[fn]].funame : typ); |
350 |
> |
/* object name */ |
351 |
> |
fgetword(nam, sizeof(nam), fin); |
352 |
> |
if (idprefix == NULL || ismodifier(fn)) |
353 |
> |
printf("%s\n", nam); |
354 |
> |
else |
355 |
> |
printf("%s.%s\n", idprefix, nam); |
356 |
> |
/* transform arguments */ |
357 |
|
if ((*ofun[fn].funp)(fin) < 0) { |
358 |
|
fprintf(stderr, "%s: (%s): bad %s \"%s\"\n", |
359 |
< |
progname, fname, ofun[fn].funame, stmp); |
359 |
> |
progname, fname, ofun[fn].funame, nam); |
360 |
|
exit(1); |
361 |
|
} |
362 |
|
} |
366 |
|
FILE *fin; |
367 |
|
{ |
368 |
|
register int i; |
369 |
< |
register FUNARGS *fa; |
369 |
> |
FUNARGS fa; |
370 |
|
|
371 |
< |
if ((fa = getfargs(fin)) == NULL) |
371 |
> |
if (readfargs(&fa, fin) != 1) |
372 |
|
return(-1); |
373 |
|
/* string arguments */ |
374 |
< |
printf("%d", fa->nsargs); |
375 |
< |
for (i = 0; i < fa->nsargs; i++) |
376 |
< |
printf(" %s", fa->sarg[i]); |
374 |
> |
printf("%d", fa.nsargs); |
375 |
> |
for (i = 0; i < fa.nsargs; i++) |
376 |
> |
printf(" %s", fa.sarg[i]); |
377 |
|
printf("\n"); |
378 |
+ |
#ifdef IARGS |
379 |
|
/* integer arguments */ |
380 |
< |
printf("%d", fa->niargs); |
381 |
< |
for (i = 0; i < fa->niargs; i++) |
382 |
< |
printf(" %d", fa->iarg[i]); |
380 |
> |
printf("%d", fa.niargs); |
381 |
> |
for (i = 0; i < fa.niargs; i++) |
382 |
> |
printf(" %d", fa.iarg[i]); |
383 |
|
printf("\n"); |
384 |
+ |
#else |
385 |
+ |
printf("0\n"); |
386 |
+ |
#endif |
387 |
|
/* float arguments */ |
388 |
< |
printf("%d", fa->nfargs); |
389 |
< |
for (i = 0; i < fa->nfargs; i++) |
390 |
< |
printf(" %18.12g", fa->farg[i]); |
388 |
> |
printf("%d", fa.nfargs); |
389 |
> |
for (i = 0; i < fa.nfargs; i++) |
390 |
> |
printf(" %18.12g", fa.farg[i]); |
391 |
|
printf("\n"); |
392 |
< |
freefargs(fa); |
392 |
> |
freefargs(&fa); |
393 |
|
return(0); |
394 |
|
} |
395 |
|
|
398 |
|
FILE *fin; |
399 |
|
{ |
400 |
|
register int i; |
401 |
< |
register FUNARGS *fa; |
401 |
> |
int resetarr = 0; |
402 |
> |
FUNARGS fa; |
403 |
|
|
404 |
< |
if ((fa = getfargs(fin)) == NULL) |
404 |
> |
if (readfargs(&fa, fin) != 1) |
405 |
|
return(-1); |
406 |
|
/* string arguments */ |
407 |
< |
printf("%d", fa->nsargs + xac-xfa); |
408 |
< |
for (i = 0; i < fa->nsargs; i++) |
409 |
< |
printf(" %s", fa->sarg[i]); |
407 |
> |
if (xac > xfa && strcmp(xav[xfa], "-i")) |
408 |
> |
resetarr = 2; |
409 |
> |
printf("%d", fa.nsargs + resetarr + xac-xfa); |
410 |
> |
for (i = 0; i < fa.nsargs; i++) |
411 |
> |
printf(" %s", fa.sarg[i]); |
412 |
> |
if (resetarr) |
413 |
> |
printf(" -i 1"); |
414 |
|
for (i = xfa; i < xac; i++) /* add xf arguments */ |
415 |
|
printf(" %s", xav[i]); |
416 |
|
printf("\n"); |
417 |
+ |
#ifdef IARGS |
418 |
|
/* integer arguments */ |
419 |
< |
printf("%d", fa->niargs); |
420 |
< |
for (i = 0; i < fa->niargs; i++) |
421 |
< |
printf(" %d", fa->iarg[i]); |
419 |
> |
printf("%d", fa.niargs); |
420 |
> |
for (i = 0; i < fa.niargs; i++) |
421 |
> |
printf(" %d", fa.iarg[i]); |
422 |
|
printf("\n"); |
423 |
+ |
#else |
424 |
+ |
printf("0\n"); |
425 |
+ |
#endif |
426 |
|
/* float arguments */ |
427 |
< |
printf("%d", fa->nfargs); |
428 |
< |
for (i = 0; i < fa->nfargs; i++) |
429 |
< |
printf(" %18.12g", fa->farg[i]); |
427 |
> |
printf("%d", fa.nfargs); |
428 |
> |
for (i = 0; i < fa.nfargs; i++) |
429 |
> |
printf(" %18.12g", fa.farg[i]); |
430 |
|
printf("\n"); |
431 |
< |
freefargs(fa); |
431 |
> |
freefargs(&fa); |
432 |
|
return(0); |
433 |
|
} |
434 |
|
|
452 |
|
{ |
453 |
|
char aliasnm[MAXSTR]; |
454 |
|
|
455 |
< |
if (fscanf(fin, "%s", aliasnm) != 1) |
455 |
> |
if (fgetword(aliasnm, MAXSTR, fin) == NULL) |
456 |
|
return(-1); |
457 |
|
printf("\t%s\n", aliasnm); |
458 |
|
return(0); |
462 |
|
m_glow(fin) /* transform arguments for proximity light */ |
463 |
|
FILE *fin; |
464 |
|
{ |
465 |
< |
register FUNARGS *fa; |
465 |
> |
FUNARGS fa; |
466 |
|
|
467 |
< |
if ((fa = getfargs(fin)) == NULL) |
467 |
> |
if (readfargs(&fa, fin) != 1) |
468 |
|
return(-1); |
469 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
469 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
470 |
|
return(-1); |
471 |
|
printf("0\n0\n4"); |
472 |
|
printf(" %18.12g %18.12g %18.12g", |
473 |
< |
fa->farg[0], fa->farg[1], fa->farg[2]); |
474 |
< |
printf(" %18.12g\n", fa->farg[3] * tot.sca); |
475 |
< |
freefargs(fa); |
473 |
> |
fa.farg[0], fa.farg[1], fa.farg[2]); |
474 |
> |
printf(" %18.12g\n", fa.farg[3] * tot.sca); |
475 |
> |
freefargs(&fa); |
476 |
|
return(0); |
477 |
|
} |
478 |
|
|
480 |
|
m_spot(fin) /* transform arguments for spotlight */ |
481 |
|
FILE *fin; |
482 |
|
{ |
483 |
< |
double v[3]; |
484 |
< |
register FUNARGS *fa; |
483 |
> |
FVECT v; |
484 |
> |
FUNARGS fa; |
485 |
|
|
486 |
< |
if ((fa = getfargs(fin)) == NULL) |
486 |
> |
if (readfargs(&fa, fin) != 1) |
487 |
|
return(-1); |
488 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
488 |
> |
if (fa.nsargs != 0 || fa.nfargs != 7) |
489 |
|
return(-1); |
490 |
|
printf("0\n0\n7"); |
491 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
492 |
< |
fa->farg[0], fa->farg[1], fa->farg[2], fa->farg[3]); |
493 |
< |
multv3(v, fa->farg+4, tot.xfm); |
492 |
> |
fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]); |
493 |
> |
multv3(v, fa.farg+4, tot.xfm); |
494 |
|
printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
495 |
< |
freefargs(fa); |
495 |
> |
freefargs(&fa); |
496 |
|
return(0); |
497 |
|
} |
498 |
|
|
499 |
|
|
500 |
+ |
m_mist(fin) /* transform arguments for mist */ |
501 |
+ |
FILE *fin; |
502 |
+ |
{ |
503 |
+ |
FUNARGS fa; |
504 |
+ |
int i; |
505 |
+ |
|
506 |
+ |
if (readfargs(&fa, fin) != 1) |
507 |
+ |
return(-1); |
508 |
+ |
if (fa.nfargs > 7) |
509 |
+ |
return(-1); |
510 |
+ |
printf("%d", fa.nsargs); |
511 |
+ |
if (idprefix == NULL) |
512 |
+ |
for (i = 0; i < fa.nsargs; i++) |
513 |
+ |
printf(" %s", fa.sarg[i]); |
514 |
+ |
else |
515 |
+ |
for (i = 0; i < fa.nsargs; i++) { |
516 |
+ |
char sname[256], *sp; |
517 |
+ |
register char *cp1, *cp2 = sname; |
518 |
+ |
/* add idprefix */ |
519 |
+ |
for (sp = fa.sarg[i]; *sp; sp = cp1) { |
520 |
+ |
for (cp1 = idprefix; *cp1; ) |
521 |
+ |
*cp2++ = *cp1++; |
522 |
+ |
*cp2++ = '.'; |
523 |
+ |
for (cp1 = sp; *cp1 && |
524 |
+ |
(*cp2++ = *cp1++) != '>'; ) |
525 |
+ |
; |
526 |
+ |
} |
527 |
+ |
*cp2 = '\0'; |
528 |
+ |
printf(" %s", sname); |
529 |
+ |
} |
530 |
+ |
printf("\n0\n%d", fa.nfargs); |
531 |
+ |
if (fa.nfargs > 2) |
532 |
+ |
printf(" %12.6g %12.6g %12.6g", fa.farg[0]/tot.sca, |
533 |
+ |
fa.farg[1]/tot.sca, fa.farg[2]/tot.sca); |
534 |
+ |
for (i = 3; i < fa.nfargs; i++) |
535 |
+ |
printf(" %12.6g", fa.farg[i]); |
536 |
+ |
printf("\n"); |
537 |
+ |
freefargs(&fa); |
538 |
+ |
return(0); |
539 |
+ |
} |
540 |
+ |
|
541 |
+ |
|
542 |
|
m_dielectric(fin) /* transform arguments for dielectric */ |
543 |
|
FILE *fin; |
544 |
|
{ |
545 |
< |
double pow(); |
383 |
< |
register FUNARGS *fa; |
545 |
> |
FUNARGS fa; |
546 |
|
|
547 |
< |
if ((fa = getfargs(fin)) == NULL) |
547 |
> |
if (readfargs(&fa, fin) != 1) |
548 |
|
return(-1); |
549 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 5) |
549 |
> |
if (fa.nsargs != 0 || fa.nfargs != 5) |
550 |
|
return(-1); |
551 |
|
printf("0\n0\n5"); |
552 |
< |
printf(" %18.12g %18.12g %18.12g", |
553 |
< |
pow(fa->farg[0], 1.0/tot.sca), |
554 |
< |
pow(fa->farg[1], 1.0/tot.sca), |
555 |
< |
pow(fa->farg[2], 1.0/tot.sca)); |
556 |
< |
printf(" %18.12g %18.12g\n", fa->farg[3], fa->farg[4]); |
557 |
< |
freefargs(fa); |
552 |
> |
printf(" %12.6g %12.6g %12.6g", |
553 |
> |
pow(fa.farg[0], 1.0/tot.sca), |
554 |
> |
pow(fa.farg[1], 1.0/tot.sca), |
555 |
> |
pow(fa.farg[2], 1.0/tot.sca)); |
556 |
> |
printf(" %12.6g %12.6g\n", fa.farg[3], fa.farg[4]); |
557 |
> |
freefargs(&fa); |
558 |
|
return(0); |
559 |
|
} |
560 |
|
|
562 |
|
m_interface(fin) /* transform arguments for interface */ |
563 |
|
FILE *fin; |
564 |
|
{ |
565 |
< |
double pow(); |
404 |
< |
register FUNARGS *fa; |
565 |
> |
FUNARGS fa; |
566 |
|
|
567 |
< |
if ((fa = getfargs(fin)) == NULL) |
567 |
> |
if (readfargs(&fa, fin) != 1) |
568 |
|
return(-1); |
569 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
569 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
570 |
|
return(-1); |
571 |
|
printf("0\n0\n8\n"); |
572 |
< |
printf("%18.12g %18.12g %18.12g", |
573 |
< |
pow(fa->farg[0], 1.0/tot.sca), |
574 |
< |
pow(fa->farg[1], 1.0/tot.sca), |
575 |
< |
pow(fa->farg[2], 1.0/tot.sca)); |
576 |
< |
printf(" %18.12g\n", fa->farg[3]); |
577 |
< |
printf("%18.12g %18.12g %18.12g", |
578 |
< |
pow(fa->farg[4], 1.0/tot.sca), |
579 |
< |
pow(fa->farg[5], 1.0/tot.sca), |
580 |
< |
pow(fa->farg[6], 1.0/tot.sca)); |
581 |
< |
printf(" %18.12g\n", fa->farg[7]); |
582 |
< |
freefargs(fa); |
572 |
> |
printf("%12.6g %12.6g %12.6g", |
573 |
> |
pow(fa.farg[0], 1.0/tot.sca), |
574 |
> |
pow(fa.farg[1], 1.0/tot.sca), |
575 |
> |
pow(fa.farg[2], 1.0/tot.sca)); |
576 |
> |
printf(" %12.6g\n", fa.farg[3]); |
577 |
> |
printf("%12.6g %12.6g %12.6g", |
578 |
> |
pow(fa.farg[4], 1.0/tot.sca), |
579 |
> |
pow(fa.farg[5], 1.0/tot.sca), |
580 |
> |
pow(fa.farg[6], 1.0/tot.sca)); |
581 |
> |
printf(" %12.6g\n", fa.farg[7]); |
582 |
> |
freefargs(&fa); |
583 |
|
return(0); |
584 |
|
} |
585 |
|
|
588 |
|
FILE *fin; |
589 |
|
{ |
590 |
|
int i; |
591 |
< |
double v[3]; |
592 |
< |
register FUNARGS *fa; |
591 |
> |
FVECT v; |
592 |
> |
FUNARGS fa; |
593 |
|
|
594 |
< |
if ((fa = getfargs(fin)) == NULL) |
594 |
> |
if (readfargs(&fa, fin) != 1) |
595 |
|
return(-1); |
596 |
< |
if (fa->niargs != 0 || (fa->nfargs != 9 && |
436 |
< |
fa->nfargs != 11 && fa->nfargs != 15)) |
596 |
> |
if (fa.nfargs < 9) |
597 |
|
return(-1); |
598 |
|
/* string arguments */ |
599 |
< |
printf("%d", fa->nsargs); |
600 |
< |
for (i = 0; i < fa->nsargs; i++) |
601 |
< |
printf(" %s", fa->sarg[i]); |
602 |
< |
printf("\n0\n%d\n", fa->nfargs); |
599 |
> |
printf("%d", fa.nsargs); |
600 |
> |
for (i = 0; i < fa.nsargs; i++) |
601 |
> |
printf(" %s", fa.sarg[i]); |
602 |
> |
printf("\n0\n%d\n", fa.nfargs); |
603 |
|
/* anchor point */ |
604 |
< |
multp3(v, fa->farg, tot.xfm); |
604 |
> |
multp3(v, fa.farg, tot.xfm); |
605 |
|
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
606 |
|
/* right vector */ |
607 |
< |
multv3(v, fa->farg+3, tot.xfm); |
607 |
> |
multv3(v, fa.farg+3, tot.xfm); |
608 |
|
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
609 |
|
/* down vector */ |
610 |
< |
multv3(v, fa->farg+6, tot.xfm); |
611 |
< |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
612 |
< |
/* forground and background */ |
613 |
< |
if (fa->nfargs == 11) |
614 |
< |
printf(" %18.12g %18.12g\n", fa->farg[9], fa->farg[10]); |
615 |
< |
else if (fa->nfargs == 15) { |
616 |
< |
printf(" %18.12g %18.12g %18.12g\n", |
457 |
< |
fa->farg[9], fa->farg[10], fa->farg[11]); |
458 |
< |
printf(" %18.12g %18.12g %18.12g\n", |
459 |
< |
fa->farg[12], fa->farg[13], fa->farg[14]); |
610 |
> |
multv3(v, fa.farg+6, tot.xfm); |
611 |
> |
printf(" %18.12g %18.12g %18.12g", v[0], v[1], v[2]); |
612 |
> |
/* remaining arguments */ |
613 |
> |
for (i = 9; i < fa.nfargs; i++) { |
614 |
> |
if (i%3 == 0) |
615 |
> |
putchar('\n'); |
616 |
> |
printf(" %18.12g", fa.farg[i]); |
617 |
|
} |
618 |
< |
freefargs(fa); |
618 |
> |
putchar('\n'); |
619 |
> |
freefargs(&fa); |
620 |
|
return(0); |
621 |
|
} |
622 |
|
|
624 |
|
o_source(fin) /* transform source arguments */ |
625 |
|
FILE *fin; |
626 |
|
{ |
627 |
< |
double dv[3]; |
628 |
< |
register FUNARGS *fa; |
627 |
> |
FVECT dv; |
628 |
> |
FUNARGS fa; |
629 |
|
|
630 |
< |
if ((fa = getfargs(fin)) == NULL) |
630 |
> |
if (readfargs(&fa, fin) != 1) |
631 |
|
return(-1); |
632 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
632 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
633 |
|
return(-1); |
634 |
|
/* transform direction vector */ |
635 |
< |
multv3(dv, fa->farg, tot.xfm); |
635 |
> |
multv3(dv, fa.farg, tot.xfm); |
636 |
|
/* output */ |
637 |
|
printf("0\n0\n4"); |
638 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
639 |
< |
dv[0], dv[1], dv[2], fa->farg[3]); |
640 |
< |
freefargs(fa); |
639 |
> |
dv[0], dv[1], dv[2], fa.farg[3]); |
640 |
> |
freefargs(&fa); |
641 |
|
return(0); |
642 |
|
} |
643 |
|
|
645 |
|
o_sphere(fin) /* transform sphere arguments */ |
646 |
|
FILE *fin; |
647 |
|
{ |
648 |
< |
double cent[3], rad; |
649 |
< |
register FUNARGS *fa; |
648 |
> |
FVECT cent; |
649 |
> |
double rad; |
650 |
> |
FUNARGS fa; |
651 |
|
|
652 |
< |
if ((fa = getfargs(fin)) == NULL) |
652 |
> |
if (readfargs(&fa, fin) != 1) |
653 |
|
return(-1); |
654 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
654 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
655 |
|
return(-1); |
656 |
|
|
657 |
< |
multp3(cent, fa->farg, tot.xfm); /* transform center */ |
657 |
> |
multp3(cent, fa.farg, tot.xfm); /* transform center */ |
658 |
|
|
659 |
< |
rad = fa->farg[3] * tot.sca; /* scale radius */ |
659 |
> |
rad = fa.farg[3] * tot.sca; /* scale radius */ |
660 |
|
|
661 |
|
printf("0\n0\n4"); |
662 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
663 |
|
cent[0], cent[1], cent[2], rad); |
664 |
< |
freefargs(fa); |
664 |
> |
freefargs(&fa); |
665 |
|
return(0); |
666 |
|
} |
667 |
|
|
669 |
|
o_face(fin) /* transform face arguments */ |
670 |
|
FILE *fin; |
671 |
|
{ |
672 |
< |
double p[3]; |
672 |
> |
FVECT p; |
673 |
|
register int i; |
674 |
< |
register FUNARGS *fa; |
674 |
> |
FUNARGS fa; |
675 |
|
|
676 |
< |
if ((fa = getfargs(fin)) == NULL) |
676 |
> |
if (readfargs(&fa, fin) != 1) |
677 |
|
return(-1); |
678 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs % 3) |
678 |
> |
if (fa.nsargs != 0 || fa.nfargs % 3) |
679 |
|
return(-1); |
680 |
|
|
681 |
< |
printf("0\n0\n%d\n", fa->nfargs); |
681 |
> |
printf("0\n0\n%d\n", fa.nfargs); |
682 |
|
|
683 |
< |
for (i = 0; i < fa->nfargs; i += 3) { |
683 |
> |
for (i = 0; i < fa.nfargs; i += 3) { |
684 |
|
if (reverse) |
685 |
< |
multp3(p, fa->farg+(fa->nfargs-i-3), tot.xfm); |
685 |
> |
multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm); |
686 |
|
else |
687 |
< |
multp3(p, fa->farg+i, tot.xfm); |
687 |
> |
multp3(p, fa.farg+i, tot.xfm); |
688 |
|
printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]); |
689 |
|
} |
690 |
< |
freefargs(fa); |
690 |
> |
freefargs(&fa); |
691 |
|
return(0); |
692 |
|
} |
693 |
|
|
695 |
|
o_cone(fin) /* transform cone and cup arguments */ |
696 |
|
FILE *fin; |
697 |
|
{ |
698 |
< |
double p0[3], p1[3], r0, r1; |
699 |
< |
register FUNARGS *fa; |
698 |
> |
FVECT p0, p1; |
699 |
> |
double r0, r1; |
700 |
> |
FUNARGS fa; |
701 |
|
|
702 |
< |
if ((fa = getfargs(fin)) == NULL) |
702 |
> |
if (readfargs(&fa, fin) != 1) |
703 |
|
return(-1); |
704 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
704 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
705 |
|
return(-1); |
706 |
|
|
707 |
|
printf("0\n0\n8\n"); |
708 |
|
|
709 |
< |
multp3(p0, fa->farg, tot.xfm); |
710 |
< |
multp3(p1, fa->farg+3, tot.xfm); |
711 |
< |
r0 = fa->farg[6] * tot.sca; |
712 |
< |
r1 = fa->farg[7] * tot.sca; |
709 |
> |
multp3(p0, fa.farg, tot.xfm); |
710 |
> |
multp3(p1, fa.farg+3, tot.xfm); |
711 |
> |
r0 = fa.farg[6] * tot.sca; |
712 |
> |
r1 = fa.farg[7] * tot.sca; |
713 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
714 |
|
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
715 |
|
printf(" %18.12g %18.12g\n", r0, r1); |
716 |
|
|
717 |
< |
freefargs(fa); |
717 |
> |
freefargs(&fa); |
718 |
|
return(0); |
719 |
|
} |
720 |
|
|
722 |
|
o_cylinder(fin) /* transform cylinder and tube arguments */ |
723 |
|
FILE *fin; |
724 |
|
{ |
725 |
< |
double p0[3], p1[3], rad; |
726 |
< |
register FUNARGS *fa; |
725 |
> |
FVECT p0, p1; |
726 |
> |
double rad; |
727 |
> |
FUNARGS fa; |
728 |
|
|
729 |
< |
if ((fa = getfargs(fin)) == NULL) |
729 |
> |
if (readfargs(&fa, fin) != 1) |
730 |
|
return(-1); |
731 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
731 |
> |
if (fa.nsargs != 0 || fa.nfargs != 7) |
732 |
|
return(-1); |
733 |
|
|
734 |
|
printf("0\n0\n7\n"); |
735 |
|
|
736 |
< |
multp3(p0, fa->farg, tot.xfm); |
737 |
< |
multp3(p1, fa->farg+3, tot.xfm); |
738 |
< |
rad = fa->farg[6] * tot.sca; |
736 |
> |
multp3(p0, fa.farg, tot.xfm); |
737 |
> |
multp3(p1, fa.farg+3, tot.xfm); |
738 |
> |
rad = fa.farg[6] * tot.sca; |
739 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
740 |
|
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
741 |
|
printf(" %18.12g\n", rad); |
742 |
< |
freefargs(fa); |
742 |
> |
freefargs(&fa); |
743 |
|
return(0); |
744 |
|
} |
745 |
|
|
747 |
|
o_ring(fin) /* transform ring arguments */ |
748 |
|
FILE *fin; |
749 |
|
{ |
750 |
< |
double p0[3], pd[3], r0, r1; |
751 |
< |
register FUNARGS *fa; |
750 |
> |
FVECT p0, pd; |
751 |
> |
double r0, r1; |
752 |
> |
FUNARGS fa; |
753 |
|
|
754 |
< |
if ((fa = getfargs(fin)) == NULL) |
754 |
> |
if (readfargs(&fa, fin) != 1) |
755 |
|
return(-1); |
756 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
756 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
757 |
|
return(-1); |
758 |
|
|
759 |
|
printf("0\n0\n8\n"); |
760 |
|
|
761 |
< |
multp3(p0, fa->farg, tot.xfm); |
762 |
< |
multv3(pd, fa->farg+3, tot.xfm); |
763 |
< |
r0 = fa->farg[6] * tot.sca; |
764 |
< |
r1 = fa->farg[7] * tot.sca; |
761 |
> |
multp3(p0, fa.farg, tot.xfm); |
762 |
> |
multv3(pd, fa.farg+3, tot.xfm); |
763 |
> |
if (invert) { |
764 |
> |
pd[0] = -pd[0]; |
765 |
> |
pd[1] = -pd[1]; |
766 |
> |
pd[2] = -pd[2]; |
767 |
> |
} |
768 |
> |
r0 = fa.farg[6] * tot.sca; |
769 |
> |
r1 = fa.farg[7] * tot.sca; |
770 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
771 |
|
printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]); |
772 |
|
printf(" %18.12g %18.12g\n", r0, r1); |
773 |
< |
freefargs(fa); |
773 |
> |
freefargs(&fa); |
774 |
|
return(0); |
775 |
|
} |
776 |
|
|
777 |
|
|
611 |
– |
FUNARGS * |
612 |
– |
getfargs(fp) /* get function arguments from stream */ |
613 |
– |
FILE *fp; |
614 |
– |
{ |
615 |
– |
char *strcpy(); |
616 |
– |
char sbuf[MAXSTR]; |
617 |
– |
int n; |
618 |
– |
register FUNARGS *fa; |
619 |
– |
register int i; |
620 |
– |
|
621 |
– |
if ((fa = (FUNARGS *)malloc((unsigned)sizeof(FUNARGS))) == NULL) |
622 |
– |
goto memerr; |
623 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
624 |
– |
return(NULL); |
625 |
– |
if (fa->nsargs = n) { |
626 |
– |
fa->sarg = (char **)malloc((unsigned)fa->nsargs*sizeof(char *)); |
627 |
– |
if (fa->sarg == NULL) |
628 |
– |
goto memerr; |
629 |
– |
for (i = 0; i < fa->nsargs; i++) { |
630 |
– |
if (fscanf(fp, "%s", sbuf) != 1) |
631 |
– |
return(NULL); |
632 |
– |
if ((fa->sarg[i] = malloc((unsigned)strlen(sbuf)+1)) == NULL) |
633 |
– |
goto memerr; |
634 |
– |
strcpy(fa->sarg[i], sbuf); |
635 |
– |
} |
636 |
– |
} else |
637 |
– |
fa->sarg = NULL; |
638 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
639 |
– |
return(NULL); |
640 |
– |
if (fa->niargs = n) { |
641 |
– |
fa->iarg = (int *)malloc((unsigned)fa->niargs*sizeof(int)); |
642 |
– |
if (fa->iarg == NULL) |
643 |
– |
goto memerr; |
644 |
– |
for (i = 0; i < fa->niargs; i++) |
645 |
– |
if (fscanf(fp, "%d", &fa->iarg[i]) != 1) |
646 |
– |
return(NULL); |
647 |
– |
} else |
648 |
– |
fa->iarg = NULL; |
649 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
650 |
– |
return(NULL); |
651 |
– |
if (fa->nfargs = n) { |
652 |
– |
fa->farg = (double *)malloc((unsigned)fa->nfargs*sizeof(double)); |
653 |
– |
if (fa->farg == NULL) |
654 |
– |
goto memerr; |
655 |
– |
for (i = 0; i < fa->nfargs; i++) |
656 |
– |
if (fscanf(fp, "%lf", &fa->farg[i]) != 1) |
657 |
– |
return(NULL); |
658 |
– |
} else |
659 |
– |
fa->farg = NULL; |
660 |
– |
return(fa); |
661 |
– |
memerr: |
662 |
– |
fprintf(stderr, "%s: out of memory in getfargs\n", progname); |
663 |
– |
exit(1); |
664 |
– |
} |
665 |
– |
|
666 |
– |
|
667 |
– |
freefargs(fa) /* free memory associated with fa */ |
668 |
– |
register FUNARGS *fa; |
669 |
– |
{ |
670 |
– |
register int i; |
671 |
– |
|
672 |
– |
for (i = 0; i < fa->nsargs; i++) |
673 |
– |
free(fa->sarg[i]); |
674 |
– |
if (fa->nsargs) |
675 |
– |
free(fa->sarg); |
676 |
– |
if (fa->niargs) |
677 |
– |
free(fa->iarg); |
678 |
– |
if (fa->nfargs) |
679 |
– |
free(fa->farg); |
680 |
– |
free(fa); |
681 |
– |
} |
682 |
– |
|
683 |
– |
|
778 |
|
initotypes() /* initialize ofun[] array */ |
779 |
|
{ |
686 |
– |
extern int o_source(); |
687 |
– |
extern int o_sphere(); |
688 |
– |
extern int o_face(); |
689 |
– |
extern int o_cone(); |
690 |
– |
extern int o_cylinder(); |
691 |
– |
extern int o_ring(); |
692 |
– |
extern int m_glow(); |
693 |
– |
extern int m_spot(); |
694 |
– |
extern int m_dielectric(); |
695 |
– |
extern int m_interface(); |
696 |
– |
extern int text(); |
697 |
– |
extern int alias(); |
698 |
– |
extern int passargs(); |
699 |
– |
extern int addxform(); |
780 |
|
register int i; |
781 |
|
|
782 |
|
if (ofun[OBJ_SOURCE].funp == o_source) |
803 |
|
ofun[MAT_SPOT].funp = m_spot; |
804 |
|
ofun[MAT_DIELECTRIC].funp = m_dielectric; |
805 |
|
ofun[MAT_INTERFACE].funp = m_interface; |
806 |
+ |
ofun[MAT_MIST].funp = m_mist; |
807 |
|
ofun[PAT_CTEXT].funp = |
808 |
|
ofun[PAT_BTEXT].funp = |
809 |
|
ofun[MIX_TEXT].funp = text; |
810 |
|
ofun[ALIAS].funp = alias; |
811 |
+ |
/* surface inverses */ |
812 |
+ |
tinvers[OBJ_FACE] = OBJ_FACE; |
813 |
+ |
tinvers[OBJ_SOURCE] = OBJ_SOURCE; |
814 |
+ |
tinvers[OBJ_CONE] = OBJ_CUP; |
815 |
+ |
tinvers[OBJ_CUP] = OBJ_CONE; |
816 |
+ |
tinvers[OBJ_SPHERE] = OBJ_BUBBLE; |
817 |
+ |
tinvers[OBJ_BUBBLE] = OBJ_SPHERE; |
818 |
+ |
tinvers[OBJ_RING] = OBJ_RING; |
819 |
+ |
tinvers[OBJ_CYLINDER] = OBJ_TUBE; |
820 |
+ |
tinvers[OBJ_TUBE] = OBJ_CYLINDER; |
821 |
+ |
tinvers[OBJ_INSTANCE] = OBJ_INSTANCE; /* oh, well */ |
822 |
|
} |
823 |
+ |
|
824 |
+ |
|
825 |
+ |
#ifdef OLDXFORM |
826 |
+ |
openmain(fname) |
827 |
+ |
char *fname; |
828 |
+ |
{ |
829 |
+ |
if (fname == NULL) { |
830 |
+ |
strcpy(mainfn, "standard input"); |
831 |
+ |
mainfp = stdin; |
832 |
+ |
return; |
833 |
+ |
} |
834 |
+ |
if (mainfp != NULL) { |
835 |
+ |
if (!strcmp(fname, mainfn)) { |
836 |
+ |
rewind(mainfp); |
837 |
+ |
return; |
838 |
+ |
} |
839 |
+ |
fclose(mainfp); |
840 |
+ |
} |
841 |
+ |
if ((mainfp = fopen(fname, "r")) == NULL) { |
842 |
+ |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
843 |
+ |
progname, fname); |
844 |
+ |
exit(1); |
845 |
+ |
} |
846 |
+ |
strcpy(mainfn, fname); |
847 |
+ |
} |
848 |
+ |
#else |
849 |
+ |
openmain(fname) /* open fname for input, changing to its directory */ |
850 |
+ |
char *fname; |
851 |
+ |
{ |
852 |
+ |
extern FILE *tmpfile(); |
853 |
+ |
extern char *getlibpath(), *getpath(); |
854 |
+ |
static char origdir[MAXPATH]; |
855 |
+ |
static char curfn[MAXPATH]; |
856 |
+ |
static int diffdir; |
857 |
+ |
register char *fpath; |
858 |
+ |
|
859 |
+ |
if (fname == NULL) { /* standard input */ |
860 |
+ |
if (mainfp == NULL) { |
861 |
+ |
register int c; |
862 |
+ |
strcpy(mainfn, "standard input"); |
863 |
+ |
if (nrept <= 1) { |
864 |
+ |
mainfp = stdin; |
865 |
+ |
return; /* just read once */ |
866 |
+ |
} |
867 |
+ |
/* else copy */ |
868 |
+ |
if ((mainfp = tmpfile()) == NULL) { |
869 |
+ |
fprintf(stderr, |
870 |
+ |
"%s: cannot create temporary file\n", |
871 |
+ |
progname); |
872 |
+ |
exit(1); |
873 |
+ |
} |
874 |
+ |
while ((c = getc(stdin)) != EOF) |
875 |
+ |
putc(c, mainfp); |
876 |
+ |
fclose(stdin); |
877 |
+ |
} |
878 |
+ |
rewind(mainfp); /* rewind copy */ |
879 |
+ |
return; |
880 |
+ |
} |
881 |
+ |
if (mainfp == NULL) { /* first call, initialize */ |
882 |
+ |
getwd(origdir); |
883 |
+ |
} else if (!strcmp(fname, curfn)) { /* just need to rewind? */ |
884 |
+ |
rewind(mainfp); |
885 |
+ |
return; |
886 |
+ |
} else { /* else close old stream */ |
887 |
+ |
fclose(mainfp); |
888 |
+ |
if (diffdir) { |
889 |
+ |
chdir(origdir); |
890 |
+ |
diffdir = 0; |
891 |
+ |
} |
892 |
+ |
} |
893 |
+ |
strcpy(curfn, fname); /* remember file name */ |
894 |
+ |
/* get full path */ |
895 |
+ |
if ((fpath = getpath(fname, getlibpath(), R_OK)) == NULL) { |
896 |
+ |
fprintf(stderr, "%s: cannot find file \"%s\"\n", |
897 |
+ |
progname, fname); |
898 |
+ |
exit(1); |
899 |
+ |
} |
900 |
+ |
if (fpath[0] == '.' && ISDIRSEP(fpath[1])) /* remove leading ./ */ |
901 |
+ |
fpath += 2; |
902 |
+ |
/* record path name */ |
903 |
+ |
strcpy(mainfn, fpath); |
904 |
+ |
if (expand) { /* change to local directory */ |
905 |
+ |
register char *cp = fpath + strlen(fpath); /* get dir. */ |
906 |
+ |
while (cp > fpath) { |
907 |
+ |
cp--; |
908 |
+ |
if (ISDIRSEP(*cp)) { |
909 |
+ |
if (cp == fpath) |
910 |
+ |
cp++; /* root special case */ |
911 |
+ |
break; |
912 |
+ |
} |
913 |
+ |
} |
914 |
+ |
*cp = '\0'; |
915 |
+ |
if (fpath[0]) { /* change to new directory? */ |
916 |
+ |
if (chdir(fpath) < 0) { |
917 |
+ |
fprintf(stderr, |
918 |
+ |
"%s: cannot change directory to \"%s\"\n", |
919 |
+ |
progname, fpath); |
920 |
+ |
exit(1); |
921 |
+ |
} |
922 |
+ |
diffdir++; |
923 |
+ |
} |
924 |
+ |
/* get final path component */ |
925 |
+ |
for (fpath = fname+strlen(fname); |
926 |
+ |
fpath > fname && !ISDIRSEP(fpath[-1]); fpath--) |
927 |
+ |
; |
928 |
+ |
} |
929 |
+ |
/* open the file */ |
930 |
+ |
if ((mainfp = fopen(fpath, "r")) == NULL) { |
931 |
+ |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
932 |
+ |
progname, mainfn); |
933 |
+ |
exit(1); |
934 |
+ |
} |
935 |
+ |
} |
936 |
+ |
#endif |