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/* vi: set sw=4 ts=4: */ /* * Mini uniq implementation for busybox * * * Copyright (C) 1999,2000,2001 by Lineo, inc. * Written by John Beppu <beppu@lineo.com> * Rewritten by Matt Kraai <kraai@alumni.carnegiemellon.edu> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <stdio.h> #include <string.h> #include <getopt.h> #include <errno.h> #include <stdlib.h> #include "busybox.h" static int print_count; static int print_uniq = 1; static int print_duplicates = 1; static void print_line(char *line, int count, FILE *fp) { if ((print_duplicates && count > 1) || (print_uniq && count == 1)) { if (print_count) fprintf(fp, "%7d\t%s", count, line); else fputs(line, fp); } } int uniq_main(int argc, char **argv) { FILE *in = stdin, *out = stdout; char *lastline = NULL, *input; int opt, count = 0; /* parse argv[] */ while ((opt = getopt(argc, argv, "cdu")) > 0) { switch (opt) { case 'c': print_count = 1; break; case 'd': print_duplicates = 1; print_uniq = 0; break; case 'u': print_duplicates = 0; print_uniq = 1; break; } } if (argv[optind] != NULL) { in = xfopen(argv[optind], "r"); if (argv[optind+1] != NULL) out = xfopen(argv[optind+1], "w"); } while ((input = get_line_from_file(in)) != NULL) { if (lastline == NULL || strcmp(input, lastline) != 0) { print_line(lastline, count, out); free(lastline); lastline = input; count = 0; } count++; } print_line(lastline, count, out); free(lastline); return EXIT_SUCCESS; } |