68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <regex.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "text.h"
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#include "util.h"
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static void nl(FILE *, const char *);
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static char mode = 't';
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static const char *sep = "\t";
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static long incr = 1;
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static regex_t preg;
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int
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main(int argc, char *argv[])
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{
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char c;
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FILE *fp;
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while((c = getopt(argc, argv, "b:i:s:")) != -1)
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switch(c) {
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case 'b':
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mode = optarg[0];
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if(optarg[0] == 'p')
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regcomp(&preg, &optarg[1], REG_NOSUB);
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else if(!strchr("ant", optarg[0]) || optarg[1] != '\0')
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eprintf("usage: %s [-b mode] [-i increment] [-s separator] [file...]\n", argv[0]);
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break;
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case 'i':
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incr = strnum(optarg, 0);
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break;
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case 's':
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sep = optarg;
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break;
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default:
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exit(EXIT_FAILURE);
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}
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if(optind == argc)
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nl(stdin, "<stdin>");
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else for(; optind < argc; optind++) {
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if(!(fp = fopen(argv[optind], "r")))
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eprintf("fopen %s:", argv[optind]);
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nl(fp, argv[optind]);
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fclose(fp);
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}
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return EXIT_SUCCESS;
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}
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void
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nl(FILE *fp, const char *str)
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{
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char *buf = NULL;
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long n = 0;
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size_t size = 0;
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while(afgets(&buf, &size, fp))
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if((mode == 'a')
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|| (mode == 'p' && !regexec(&preg, buf, 0, NULL, 0))
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|| (mode == 't' && buf[0] != '\n'))
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printf("%6ld%s%s", n += incr, sep, buf);
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else
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printf(" %s", buf);
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free(buf);
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}
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