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#ifndef lint |
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static const char RCSid[] = "$Id: rsplit.c,v 1.7 2019/07/20 23:12:53 greg Exp $"; |
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#endif |
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/* |
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* rsplit.c - split input into multiple output streams |
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* |
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* 7/4/19 Greg Ward |
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*/ |
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|
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#include <stdlib.h> |
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#include <ctype.h> |
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|
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#include "rtio.h" |
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#include "platform.h" |
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#include "resolu.h" |
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|
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#define DOHEADER 1 |
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#define DORESOLU 2 |
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|
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#define MAXFILE 512 /* maximum number of files */ |
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|
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static FILE *output[MAXFILE]; |
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static int bytsiz[MAXFILE]; |
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static short hdrflags[MAXFILE]; |
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static const char *format[MAXFILE]; |
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static int termc[MAXFILE]; |
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static int nfiles = 0; |
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|
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static RESOLU ourres = {PIXSTANDARD, 0, 0}; |
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|
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static char buf[16384]; /* input buffer used in scanOK() */ |
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|
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|
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/* process header line */ |
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static int |
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headline(char *s, void *p) |
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{ |
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extern const char FMTSTR[]; |
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int i = nfiles; |
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|
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if (strstr(s, FMTSTR) == s) |
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return(0); /* don't copy format */ |
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if (!strncmp(s, "NROWS=", 6)) |
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return(0); |
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if (!strncmp(s, "NCOLS=", 6)) |
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return(0); |
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if (!strncmp(s, "NCOMP=", 6)) |
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return(0); |
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while (i--) /* else copy line to output streams */ |
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if (hdrflags[i] & DOHEADER) |
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fputs(s, output[i]); |
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return(1); |
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} |
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|
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|
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/* scan field into buffer up to and including terminating byte */ |
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static int |
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scanOK(int termc) |
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{ |
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char *cp = buf; |
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int c; |
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|
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while ((c = getchar()) != EOF) { |
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*cp++ = c; |
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if (cp-buf >= sizeof(buf)) |
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break; |
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if (c == termc) { |
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*cp = '\0'; |
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return(cp-buf); |
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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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int |
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main(int argc, char *argv[]) |
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{ |
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int inpflags = 0; |
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int needres = 0; |
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int force = 0; |
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int append = 0; |
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long outcnt = 0; |
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int bininp = 0; |
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int curterm = '\n'; |
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int curbytes = 0; |
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int curflags = 0; |
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const char *curfmt = "ascii"; |
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int i; |
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|
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for (i = 1; i < argc; i++) { |
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if (argv[i][0] == '-') { |
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switch (argv[i][1]) { |
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case 't': |
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curterm = argv[i][2]; |
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if (!curterm) curterm = '\n'; |
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break; |
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case 'i': |
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switch (argv[i][2]) { |
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case 'h': |
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inpflags ^= DOHEADER; |
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break; |
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case 'H': |
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inpflags ^= DORESOLU; |
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break; |
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default: |
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goto badopt; |
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} |
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break; |
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case 'f': |
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force = !force; |
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break; |
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case 'a': |
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append = !append; |
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break; |
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case 'x': |
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ourres.xr = atoi(argv[++i]); |
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break; |
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case 'y': |
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ourres.yr = atoi(argv[++i]); |
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break; |
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case 'o': |
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switch (argv[i][2]) { |
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case 'n': |
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outcnt = atol(argv[++i]); |
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continue; |
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case 'h': |
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curflags ^= DOHEADER; |
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continue; |
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case 'H': |
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curflags ^= DORESOLU; |
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continue; |
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case 'f': |
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curfmt = "float"; |
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curbytes = sizeof(float); |
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break; |
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case 'd': |
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curfmt = "double"; |
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curbytes = sizeof(double); |
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break; |
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case 'i': |
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curfmt = "int"; |
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curbytes = sizeof(int); |
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break; |
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case 'w': |
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curfmt = "16-bit"; |
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curbytes = 2; |
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break; |
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case 'b': |
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curfmt = "byte"; |
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curbytes = 1; |
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break; |
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case 'a': |
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curfmt = "ascii"; |
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curbytes = -1; |
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break; |
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default: |
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goto badopt; |
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} |
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if (isdigit(argv[i][3])) |
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curbytes *= atoi(argv[i]+3); |
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curbytes += (curbytes == -1); |
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if (curbytes > (int)sizeof(buf)) { |
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fputs(argv[0], stderr); |
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fputs(": output size too big\n", stderr); |
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return(1); |
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} |
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bininp += (curbytes > 0); |
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break; |
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case '\0': |
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needres |= (curflags & DORESOLU); |
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termc[nfiles] = curterm; |
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hdrflags[nfiles] = curflags; |
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output[nfiles] = stdout; |
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if (curbytes > 0) |
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SET_FILE_BINARY(output[nfiles]); |
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format[nfiles] = curfmt; |
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bytsiz[nfiles++] = curbytes; |
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break; |
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badopt:; |
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default: |
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fputs(argv[0], stderr); |
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fputs(": bad option\n", stderr); |
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return(1); |
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} |
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} else if (argv[i][0] == '!') { |
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needres |= (curflags & DORESOLU); |
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termc[nfiles] = curterm; |
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hdrflags[nfiles] = curflags; |
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if ((output[nfiles] = popen(argv[i]+1, "w")) == NULL) { |
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fputs(argv[i], stderr); |
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fputs(": cannot start command\n", stderr); |
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return(1); |
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} |
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if (curbytes > 0) |
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SET_FILE_BINARY(output[nfiles]); |
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format[nfiles] = curfmt; |
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bytsiz[nfiles++] = curbytes; |
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} else { |
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if (append & (curflags != 0)) { |
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fputs(argv[0], stderr); |
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fputs(": -a option incompatible with -oh and -oH\n", |
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stderr); |
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return(1); |
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} |
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needres |= (curflags & DORESOLU); |
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termc[nfiles] = curterm; |
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hdrflags[nfiles] = curflags; |
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if (!append & !force && access(argv[i], F_OK) == 0) { |
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fputs(argv[i], stderr); |
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fputs(": file exists -- use -f to overwrite\n", |
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stderr); |
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return(1); |
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} |
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output[nfiles] = fopen(argv[i], append ? "a" : "w"); |
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if (output[nfiles] == NULL) { |
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fputs(argv[i], stderr); |
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fputs(": cannot open for output\n", stderr); |
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return(1); |
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} |
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if (curbytes > 0) |
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SET_FILE_BINARY(output[nfiles]); |
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format[nfiles] = curfmt; |
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bytsiz[nfiles++] = curbytes; |
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} |
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if (nfiles >= MAXFILE) { |
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fputs(argv[0], stderr); |
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fputs(": too many output streams\n", stderr); |
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return(1); |
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} |
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} |
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if (!nfiles) { |
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fputs(argv[0], stderr); |
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fputs(": no output streams\n", stderr); |
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return(1); |
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} |
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if (bininp) /* binary input? */ |
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SET_FILE_BINARY(stdin); |
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#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
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flockfile(stdin); |
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for (i = nfiles; i--; ) |
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flockfile(output[i]); |
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#endif |
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/* load/copy header */ |
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if (inpflags & DOHEADER && getheader(stdin, headline, NULL) < 0) { |
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fputs(argv[0], stderr); |
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fputs(": cannot get header from standard input\n", |
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stderr); |
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return(1); |
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} |
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/* handle resolution string */ |
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if (inpflags & DORESOLU && !fgetsresolu(&ourres, stdin)) { |
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fputs(argv[0], stderr); |
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fputs(": cannot get resolution string from standard input\n", |
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stderr); |
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return(1); |
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} |
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if (needres && (ourres.xr <= 0) | (ourres.yr <= 0)) { |
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fputs(argv[0], stderr); |
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fputs(": -oH option requires -iH or -x and -y options\n", stderr); |
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return(1); |
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} |
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if ((ourres.xr > 0) & (ourres.yr > 0)) { |
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if (outcnt <= 0) { |
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outcnt = ourres.xr * ourres.yr; |
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} else if (outcnt != ourres.xr*ourres.yr) { |
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fputs(argv[0], stderr); |
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fputs(": warning: -on option does not agree with resolution\n", |
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stderr); |
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} |
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} |
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for (i = 0; i < nfiles; i++) { /* complete headers */ |
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if (hdrflags[i] & DOHEADER) { |
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if (!(inpflags & DOHEADER)) |
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newheader("RADIANCE", output[i]); |
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printargs(argc, argv, output[i]); |
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if (format[i] != NULL) |
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fputformat(format[i], output[i]); |
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fputc('\n', output[i]); |
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} |
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if (hdrflags[i] & DORESOLU) |
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fputsresolu(&ourres, output[i]); |
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} |
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do { /* main loop */ |
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for (i = 0; i < nfiles; i++) { |
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if (bytsiz[i] > 0) { /* binary output */ |
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if (getbinary(buf, bytsiz[i], 1, stdin) < 1) |
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break; |
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if (putbinary(buf, bytsiz[i], 1, output[i]) < 1) |
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break; |
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} else if (bytsiz[i] < 0) { /* N-field output */ |
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int n = -bytsiz[i]; |
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while (n--) { |
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if (!scanOK(termc[i])) |
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break; |
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if (fputs(buf, output[i]) == EOF) |
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break; |
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} |
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if (n >= 0) /* fell short? */ |
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break; |
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if (termc[i] != '\n') /* add EOL if none */ |
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fputc('\n', output[i]); |
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} else { /* 1-field output */ |
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if (!scanOK(termc[i])) |
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break; |
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if (fputs(buf, output[i]) == EOF) |
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break; |
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if (termc[i] != '\n') /* add EOL if none */ |
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fputc('\n', output[i]); |
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} |
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/* skip input EOL? */ |
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if (!bininp && termc[nfiles-1] != '\n') { |
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int c = getchar(); |
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if ((c != '\n') & (c != EOF)) |
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ungetc(c, stdin); |
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} |
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} |
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if (i < nfiles) |
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break; |
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} while (--outcnt); |
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/* check ending */ |
| 322 |
if (fflush(NULL) == EOF) { |
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fputs(argv[0], stderr); |
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fputs(": write error on one or more outputs\n", stderr); |
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return(1); |
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} |
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if (outcnt > 0) { |
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fputs(argv[0], stderr); |
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fputs(": warning: premature EOD\n", stderr); |
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} |
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return(0); |
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} |
