mirror of https://github.com/GnoConsortium/gno.git
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
#pragma stacksize 1024
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#include <types.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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const long bufSize = 512l;
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int all;
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int myprint(char c)
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{
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if (all) {
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if (isprint(c) || (c==9)) return 1;
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} else {
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if ( ((c>64) && (c<91)) || ((c>96) && (c<123)) || ((c>47) && (c<58))
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|| (c==32) || (c==9) ) return 1;
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}
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return 0;
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}
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main(int argc,char **argv)
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{
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FILE *duh;
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int concur,c,errflg = 0,size,pos;
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int inRow = 4,keepOff = FALSE;
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unsigned char *buffer,*string;
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unsigned long stringSize = 256l,offSet;
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extern char *optarg;
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extern int optind;
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extern int getopt(int,char **,char*);
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/* optarg = NULL; optind = 0; */ /* this makes getopt restartable */
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all = FALSE;
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while ((c = getopt(argc,argv, "c:na")) != EOF) {
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switch (c) {
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case 'c' :
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inRow = atoi(optarg);
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break;
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case 'n' :
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keepOff = TRUE;
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break;
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case 'a' :
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all = TRUE;
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break;
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default : errflg++;
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}
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}
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if (errflg) {
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fprintf(stderr,"usage: strings [-a] [-c #chars] [-n] files...\n");
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exit(2);
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}
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if (inRow < 4) inRow = 4;
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argv += optind;
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buffer = (unsigned char *)malloc(bufSize);
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string = (unsigned char *)malloc(stringSize);
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if (optind == argc) {
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duh = stdin;
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goto action;
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}
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for (;optind<argc;optind++) {
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if ((duh = fopen(*argv,"rb")) == NULL) {
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fprintf(stderr,"error opening %s\n",*argv);
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exit(1);
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}
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argv++;
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action: concur = 0;
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offSet = 0l;
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while (!feof(duh)) {
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size = fread(buffer,sizeof(unsigned char),bufSize,duh);
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for (pos = 0;pos < size;pos++,offSet++) {
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if (myprint(c=toascii(buffer[pos]))) {
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string[concur] = c;
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if (concur++ > stringSize) {
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stringSize += 256l;
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if ((string = realloc(string,stringSize)) == NULL)
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exit(2);
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}
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} else if ((isspace(c) || !c) && (concur >= inRow)) {
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string[concur] = 0;
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if (keepOff) printf("%6.6lX : ",offSet);
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printf("%s\n",string);
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concur = 0;
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} else {
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concur = 0;
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}
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}
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}
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fclose(duh);
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}
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free(buffer);
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free(string);
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exit(0);
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}
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