diff options
Diffstat (limited to 'coreutils/cat.c')
| -rw-r--r-- | coreutils/cat.c | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/coreutils/cat.c b/coreutils/cat.c index 65978887e..4169d9516 100644 --- a/coreutils/cat.c +++ b/coreutils/cat.c @@ -15,15 +15,31 @@ //applet:IF_CAT(APPLET_NOFORK(cat, cat, BB_DIR_BIN, BB_SUID_DROP, cat)) -//kbuild:lib-$(CONFIG_CAT) += cat.o +//kbuild:lib-$(CONFIG_CAT) += cat.o +// For -n: +//kbuild:lib-$(CONFIG_CAT) += nl.o /* BB_AUDIT SUSv3 compliant */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */ //usage:#define cat_trivial_usage -//usage: "[FILE]..." +//usage: "[-n] [FILE]..." //usage:#define cat_full_usage "\n\n" //usage: "Concatenate FILEs and print them to stdout" +//usage: "\n -n Number output lines" +/* + Longopts not implemented yet: + --number-nonblank number nonempty output lines, overrides -n + --number number all output lines + Not implemented yet: + -A, --show-all equivalent to -vET + -e equivalent to -vE + -E, --show-ends display $ at end of each line + -s, --squeeze-blank suppress repeated empty output lines + -t equivalent to -vT + -T, --show-tabs display TAB characters as ^I + -v, --show-nonprinting use ^ and M- notation, except for LFD and TAB +*/ //usage: //usage:#define cat_example_usage //usage: "$ cat /proc/uptime\n" @@ -61,7 +77,26 @@ int bb_cat(char **argv) int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int cat_main(int argc UNUSED_PARAM, char **argv) { - getopt32(argv, "u"); + struct number_state ns; + unsigned opt; + + /* -u is ignored */ + opt = getopt32(argv, "nbu"); argv += optind; - return bb_cat(argv); + if (!(opt & 3)) /* no -n or -b */ + return bb_cat(argv); + + if (!*argv) + *--argv = (char*)"-"; + ns.width = 6; + ns.start = 1; + ns.inc = 1; + ns.sep = "\t"; + ns.empty_str = "\n"; + ns.all = !(opt & 2); /* -n without -b */ + ns.nonempty = (opt & 2); /* -b (with or without -n) */ + do { + print_numbered_lines(&ns, *argv); + } while (*++argv); + fflush_stdout_and_exit(EXIT_SUCCESS); } |