diff options
| -rw-r--r-- | coreutils/Config.in | 6 | ||||
| -rw-r--r-- | coreutils/Makefile.in | 1 | ||||
| -rw-r--r-- | coreutils/cat.c | 31 | ||||
| -rw-r--r-- | coreutils/catv.c | 65 | ||||
| -rw-r--r-- | include/applets.h | 1 | ||||
| -rw-r--r-- | include/usage.h | 7 |
6 files changed, 82 insertions, 29 deletions
diff --git a/coreutils/Config.in b/coreutils/Config.in index 818854c..96f4d7a 100644 --- a/coreutils/Config.in +++ b/coreutils/Config.in @@ -25,6 +25,12 @@ config CONFIG_CAT help cat is used to concatenate files and print them to the standard output. Enable this option if you wish to enable the 'cat' utility. +config CONFIG_CATV + bool "catv" + default n + help + Display nonprinting characters as escape sequences (like some + implementations' cat -v option). config CONFIG_FEATURE_CAT_ESCAPE bool "support -vetET" diff --git a/coreutils/Makefile.in b/coreutils/Makefile.in index 24eee0b..50c090f 100644 --- a/coreutils/Makefile.in +++ b/coreutils/Makefile.in @@ -14,6 +14,7 @@ COREUTILS-y:= COREUTILS-$(CONFIG_BASENAME) += basename.o COREUTILS-$(CONFIG_CAL) += cal.o COREUTILS-$(CONFIG_CAT) += cat.o +COREUTILS-$(CONFIG_CATV) += catv.o COREUTILS-$(CONFIG_CHGRP) += chgrp.o COREUTILS-$(CONFIG_CHMOD) += chmod.o COREUTILS-$(CONFIG_CHOWN) += chown.o diff --git a/coreutils/cat.c b/coreutils/cat.c index 9645f61..37237ec 100644 --- a/coreutils/cat.c +++ b/coreutils/cat.c @@ -4,41 +4,14 @@ * * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> * - * 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 - * + * Licensed under GPLv2 or later, see file License in this tarball for details. */ /* BB_AUDIT SUSv3 compliant */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */ -/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) - * - * This is a new implementation of 'cat' which aims to be SUSv3 compliant. - * - * Changes from the previous implementation include: - * 1) Multiple '-' args are accepted as required by SUSv3. The previous - * implementation would close stdin and segfault on a subsequent '-'. - * 2) The '-u' options is required by SUSv3. Note that the specified - * behavior for '-u' is done by default, so all we need do is accept - * the option. - */ - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> #include "busybox.h" +#include <unistd.h> int cat_main(int argc, char **argv) { diff --git a/coreutils/catv.c b/coreutils/catv.c new file mode 100644 index 0000000..dd4aa44 --- /dev/null +++ b/coreutils/catv.c @@ -0,0 +1,65 @@ +/* vi: set sw=4 ts=4: */ +/* + * cat -v implementation for busybox + * + * Copyright (C) 2006 Rob Landley <rob@landley.net> + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ + +/* See "Cat -v considered harmful" at + * http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz */ + +#include "busybox.h" +#include <unistd.h> +#include <fcntl.h> + +int catv_main(int argc, char **argv) +{ + int retval = EXIT_SUCCESS, fd, flags; + + flags = bb_getopt_ulflags(argc, argv, "etv"); + flags ^= 4; + + // Loop through files. + + argv += optind; + do { + // Read from stdin if there's nothing else to do. + + fd = 0; + if (*argv && 0>(fd = bb_xopen(*argv, O_RDONLY))) retval = EXIT_FAILURE; + else for(;;) { + int i, res; + + res = read(fd, bb_common_bufsiz1, sizeof(bb_common_bufsiz1)); + if (res < 0) retval = EXIT_FAILURE; + if (res <1) break; + for (i=0; i<res; i++) { + char c=bb_common_bufsiz1[i]; + + if (c > 126 && (flags & 4)) { + if (c == 127) { + printf("^?"); + continue; + } else { + printf("M-"); + c -= 128; + } + } + if (c < 32) { + if (c == 10) { + if (flags & 1) putchar('$'); + } else if (flags & (c==9 ? 2 : 4)) { + printf("^%c", c+'@'); + continue; + } + } + putchar(c); + } + } + if (ENABLE_FEATURE_CLEAN_UP && fd) close(fd); + } while (*++argv); + + return retval; +} diff --git a/include/applets.h b/include/applets.h index bbff772..ab2a6c5 100644 --- a/include/applets.h +++ b/include/applets.h @@ -63,6 +63,7 @@ APPLET_NOUSAGE(busybox, busybox, _BB_DIR_BIN, _BB_SUID_MAYBE) USE_BUNZIP2(APPLET(bzcat, bunzip2, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_CAL(APPLET(cal, cal, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_CAT(APPLET(cat, cat, _BB_DIR_BIN, _BB_SUID_NEVER)) +USE_CATV(APPLET(catv, catv, _BB_DIR_BIN, _BB_SUID_NEVER)) USE_CHATTR(APPLET(chattr, chattr, _BB_DIR_BIN, _BB_SUID_NEVER)) USE_CHGRP(APPLET(chgrp, chgrp, _BB_DIR_BIN, _BB_SUID_NEVER)) USE_CHMOD(APPLET(chmod, chmod, _BB_DIR_BIN, _BB_SUID_NEVER)) diff --git a/include/usage.h b/include/usage.h index 3f894c5..1d143e6 100644 --- a/include/usage.h +++ b/include/usage.h @@ -136,6 +136,13 @@ "$ cat /proc/uptime\n" \ "110716.72 17.67" +#define catv_trivial_usage \ + "[-etv] [FILE]..." +#define catv_full_usage \ + "Display nonprinting characters as ^x or M-x.\n\n"\ + "\t-e\tEnd each line with $\n" \ + "\t-t\tShow tabs as ^I\n" \ + "\t-v\tDon't use ^x or M-x escapes." #define chattr_trivial_usage \ "[-R] [-+=AacDdijsStTu] [-v version] files..." #define chattr_full_usage \ |