diff options
Diffstat (limited to 'coreutils/cat.c')
| -rw-r--r-- | coreutils/cat.c | 44 |
1 files changed, 29 insertions, 15 deletions
diff --git a/coreutils/cat.c b/coreutils/cat.c index 178f96b..a9ba68d 100644 --- a/coreutils/cat.c +++ b/coreutils/cat.c @@ -101,27 +101,32 @@ * to achieve "cat -v" effect. The actual effect would be "users pissed off * by gratuitous incompatibility". */ -#define CATV_OPT_e (1<<0) -#define CATV_OPT_t (1<<1) -#define CATV_OPT_v (1<<2) +#define CAT_OPT_e (1<<0) +#define CAT_OPT_t (1<<1) +#define CAT_OPT_v (1<<2) +/* -A occupies bit (1<<3) */ +#define CAT_OPT_n ((1<<4) * ENABLE_FEATURE_CATN) +#define CAT_OPT_b ((1<<5) * ENABLE_FEATURE_CATN) static int catv(unsigned opts, char **argv) { int retval = EXIT_SUCCESS; int fd; +#if ENABLE_FEATURE_CATN + unsigned lineno = 0; + unsigned eol_char = (opts & (CAT_OPT_n|CAT_OPT_b)) ? '\n' : 0x100; + unsigned skip_num_on = (opts & CAT_OPT_b) ? '\n' : 0x100; + bool eol_seen = 1; +#endif - BUILD_BUG_ON(CATV_OPT_e != VISIBLE_ENDLINE); - BUILD_BUG_ON(CATV_OPT_t != VISIBLE_SHOW_TABS); + BUILD_BUG_ON(CAT_OPT_e != VISIBLE_ENDLINE); + BUILD_BUG_ON(CAT_OPT_t != VISIBLE_SHOW_TABS); #if 0 /* These consts match, we can just pass "opts" to visible() */ - if (opts & CATV_OPT_e) + if (opts & CAT_OPT_e) flags |= VISIBLE_ENDLINE; - if (opts & CATV_OPT_t) + if (opts & CAT_OPT_t) flags |= VISIBLE_SHOW_TABS; #endif - /* Read from stdin if there's nothing else to do. */ - if (!argv[0]) - *--argv = (char*)"-"; - #define read_buf bb_common_bufsiz1 setup_common_bufsiz(); do { @@ -141,6 +146,11 @@ static int catv(unsigned opts, char **argv) for (i = 0; i < res; i++) { unsigned char c = read_buf[i]; char buf[sizeof("M-^c")]; +#if ENABLE_FEATURE_CATN + if (eol_seen && c != skip_num_on) + printf("%6u ", ++lineno); + eol_seen = (c == eol_char); +#endif visible(c, buf, opts); fputs(buf, stdout); } @@ -151,12 +161,13 @@ static int catv(unsigned opts, char **argv) fflush_stdout_and_exit(retval); } +#undef CAT_OPT_n +#undef CAT_OPT_b #endif int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int cat_main(int argc UNUSED_PARAM, char **argv) { - struct number_state ns; unsigned opts; IF_FEATURE_CATV(opt_complementary = "Aetv"; /* -A == -vet */) @@ -164,10 +175,13 @@ int cat_main(int argc UNUSED_PARAM, char **argv) opts = getopt32(argv, IF_FEATURE_CATV("etvA") IF_FEATURE_CATN("nb") "u"); argv += optind; + /* Read from stdin if there's nothing else to do. */ + if (!argv[0]) + *--argv = (char*)"-"; + #if ENABLE_FEATURE_CATV if (opts & 7) return catv(opts, argv); -//BUG: -v,-e,-t,-A ignore -nb opts >>= 4; #endif @@ -175,8 +189,8 @@ int cat_main(int argc UNUSED_PARAM, char **argv) # define CAT_OPT_n (1<<0) # define CAT_OPT_b (1<<1) if (opts & (CAT_OPT_n|CAT_OPT_b)) { /* -n or -b */ - if (!*argv) - *--argv = (char*)"-"; + struct number_state ns; + ns.width = 6; ns.start = 1; ns.inc = 1; |