From cc5e090f12fb4e3834fb1a55bc91d7618af8ce78 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Tue, 12 Jun 2007 08:12:33 +0000 Subject: move several applets to more correct ex-project. No code changes. --- coreutils/cmp.c | 145 -------------------------------------------------------- 1 file changed, 145 deletions(-) delete mode 100644 coreutils/cmp.c (limited to 'coreutils/cmp.c') diff --git a/coreutils/cmp.c b/coreutils/cmp.c deleted file mode 100644 index e5dda80ff..000000000 --- a/coreutils/cmp.c +++ /dev/null @@ -1,145 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Mini cmp implementation for busybox - * - * Copyright (C) 2000,2001 by Matt Kraai - * - * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. - */ - -/* BB_AUDIT SUSv3 (virtually) compliant -- uses nicer GNU format for -l. */ -/* http://www.opengroup.org/onlinepubs/007904975/utilities/cmp.html */ - -/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) - * - * Original version majorly reworked for SUSv3 compliance, bug fixes, and - * size optimizations. Changes include: - * 1) Now correctly distinguishes between errors and actual file differences. - * 2) Proper handling of '-' args. - * 3) Actual error checking of i/o. - * 4) Accept SUSv3 -l option. Note that we use the slightly nicer gnu format - * in the '-l' case. - */ - -#include "libbb.h" - -static FILE *cmp_xfopen_input(const char *filename) -{ - FILE *fp; - - fp = fopen_or_warn_stdin(filename); - if (fp) - return fp; - xfunc_die(); /* We already output an error message. */ -} - -static const char fmt_eof[] = "cmp: EOF on %s\n"; -static const char fmt_differ[] = "%s %s differ: char %"OFF_FMT"d, line %d\n"; -// This fmt_l_opt uses gnu-isms. SUSv3 would be "%.0s%.0s%"OFF_FMT"d %o %o\n" -static const char fmt_l_opt[] = "%.0s%.0s%"OFF_FMT"d %3o %3o\n"; - -static const char opt_chars[] = "sl"; -#define CMP_OPT_s (1<<0) -#define CMP_OPT_l (1<<1) - -int cmp_main(int argc, char **argv); -int cmp_main(int argc, char **argv) -{ - FILE *fp1, *fp2, *outfile = stdout; - const char *filename1, *filename2 = "-"; - USE_DESKTOP(off_t skip1 = 0, skip2 = 0;) - off_t char_pos = 0; - int line_pos = 1; /* Hopefully won't overflow... */ - const char *fmt; - int c1, c2; - unsigned opt; - int retval = 0; - - xfunc_error_retval = 2; /* 1 is returned if files are different. */ - - opt_complementary = "?:-1" - USE_DESKTOP(":?4") - SKIP_DESKTOP(":?2") - ":l--s:s--l"; - opt = getopt32(argc, argv, opt_chars); - argv += optind; - - filename1 = *argv; - fp1 = cmp_xfopen_input(filename1); - - if (*++argv) { - filename2 = *argv; -#if ENABLE_DESKTOP - if (*++argv) { - skip1 = XATOOFF(*argv); - if (*++argv) { - skip2 = XATOOFF(*argv); - } - } -#endif - } - - fp2 = cmp_xfopen_input(filename2); - if (fp1 == fp2) { /* Paranoia check... stdin == stdin? */ - /* Note that we don't bother reading stdin. Neither does gnu wc. - * But perhaps we should, so that other apps down the chain don't - * get the input. Consider 'echo hello | (cmp - - && cat -)'. - */ - return 0; - } - - if (opt & CMP_OPT_l) - fmt = fmt_l_opt; - else - fmt = fmt_differ; - -#if ENABLE_DESKTOP - while (skip1) { getc(fp1); skip1--; } - while (skip2) { getc(fp2); skip2--; } -#endif - do { - c1 = getc(fp1); - c2 = getc(fp2); - ++char_pos; - if (c1 != c2) { /* Remember: a read error may have occurred. */ - retval = 1; /* But assume the files are different for now. */ - if (c2 == EOF) { - /* We know that fp1 isn't at EOF or in an error state. But to - * save space below, things are setup to expect an EOF in fp1 - * if an EOF occurred. So, swap things around. - */ - fp1 = fp2; - filename1 = filename2; - c1 = c2; - } - if (c1 == EOF) { - die_if_ferror(fp1, filename1); - fmt = fmt_eof; /* Well, no error, so it must really be EOF. */ - outfile = stderr; - /* There may have been output to stdout (option -l), so - * make sure we fflush before writing to stderr. */ - xfflush_stdout(); - } - if (!(opt & CMP_OPT_s)) { - if (opt & CMP_OPT_l) { - line_pos = c1; /* line_pos is unused in the -l case. */ - } - fprintf(outfile, fmt, filename1, filename2, char_pos, line_pos, c2); - if (opt) { /* This must be -l since not -s. */ - /* If we encountered an EOF, - * the while check will catch it. */ - continue; - } - } - break; - } - if (c1 == '\n') { - ++line_pos; - } - } while (c1 != EOF); - - die_if_ferror(fp1, filename1); - die_if_ferror(fp2, filename2); - - fflush_stdout_and_exit(retval); -} -- cgit v1.2.3