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authorKang-Che Sung <explorer09@gmail.com>2017-07-14 09:56:13 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2017-07-14 09:56:13 +0200
commita2bdc5c55485b054088513083ca0c78ce11445a9 (patch)
treebfc13964ba3f4a407d1de50a4ca2b657345cb2e4
parent38d966943f5288bb1f2e7219f50a92753c730b14 (diff)
downloadbusybox-a2bdc5c55485b054088513083ca0c78ce11445a9.tar.gz
cat: allow compiling out -n and -b
When these options were introduced in d88f94a5df3a2edb8ba56fab5c13674b452f87ab it provides no config options to compile them out. Now provide one. Introduce config FEATURE_CATN. Signed-off-by: Kang-Che Sung <explorer09@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--coreutils/cat.c59
1 files changed, 38 insertions, 21 deletions
diff --git a/coreutils/cat.c b/coreutils/cat.c
index 4d9147f8a..178f96b09 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -13,6 +13,13 @@
//config: cat is used to concatenate files and print them to the standard
//config: output. Enable this option if you wish to enable the 'cat' utility.
//config:
+//config:config FEATURE_CATN
+//config: bool "Enable -n and -b options"
+//config: default y
+//config: depends on CAT
+//config: help
+//config: -n numbers all output lines while -b numbers nonempty output lines.
+//config:
//config:config FEATURE_CATV
//config: bool "cat -v[etA]"
//config: default y
@@ -27,12 +34,19 @@
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
+//usage:#if ENABLE_FEATURE_CATN || ENABLE_FEATURE_CATV
+//usage:#define cat_trivial_usage
+//usage: "[-" IF_FEATURE_CATN("nb") IF_FEATURE_CATV("vteA") "] [FILE]..."
+//usage:#else
//usage:#define cat_trivial_usage
-//usage: "[-nb"IF_FEATURE_CATV("vteA")"] [FILE]..."
+//usage: "[FILE]..."
+//usage:#endif
//usage:#define cat_full_usage "\n\n"
//usage: "Print FILEs to stdout\n"
+//usage: IF_FEATURE_CATN(
//usage: "\n -n Number output lines"
//usage: "\n -b Number nonempty lines"
+//usage: )
//usage: IF_FEATURE_CATV(
//usage: "\n -v Show nonprinting characters as ^x or M-x"
//usage: "\n -t ...and tabs as ^I"
@@ -84,7 +98,7 @@
* I agree with the argument. Unfortunately, this ship has sailed (1983...).
* There are dozens of Linux distros and each of them has "cat" which supports -v.
* It's unrealistic for us to "reeducate" them to use our, incompatible way
- * to achieve "cat -v" effect. The actuall effect would be "users pissed off
+ * to achieve "cat -v" effect. The actual effect would be "users pissed off
* by gratuitous incompatibility".
*/
#define CATV_OPT_e (1<<0)
@@ -147,7 +161,7 @@ int cat_main(int argc UNUSED_PARAM, char **argv)
IF_FEATURE_CATV(opt_complementary = "Aetv"; /* -A == -vet */)
/* -u is ignored ("unbuffered") */
- opts = getopt32(argv, IF_FEATURE_CATV("etvA")"nbu");
+ opts = getopt32(argv, IF_FEATURE_CATV("etvA") IF_FEATURE_CATN("nb") "u");
argv += optind;
#if ENABLE_FEATURE_CATV
@@ -157,23 +171,26 @@ int cat_main(int argc UNUSED_PARAM, char **argv)
opts >>= 4;
#endif
-#define CAT_OPT_n (1<<0)
-#define CAT_OPT_b (1<<1)
-#define CAT_OPT_u (1<<2)
- if (!(opts & (CAT_OPT_n|CAT_OPT_b))) /* no -n or -b */
- return bb_cat(argv);
+#if ENABLE_FEATURE_CATN
+# 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*)"-";
+ ns.width = 6;
+ ns.start = 1;
+ ns.inc = 1;
+ ns.sep = "\t";
+ ns.empty_str = "\n";
+ ns.all = !(opts & CAT_OPT_b); /* -n without -b */
+ ns.nonempty = (opts & CAT_OPT_b); /* -b (with or without -n) */
+ do {
+ print_numbered_lines(&ns, *argv);
+ } while (*++argv);
+ fflush_stdout_and_exit(EXIT_SUCCESS);
+ }
+ /*opts >>= 2;*/
+#endif
- if (!*argv)
- *--argv = (char*)"-";
- ns.width = 6;
- ns.start = 1;
- ns.inc = 1;
- ns.sep = "\t";
- ns.empty_str = "\n";
- ns.all = !(opts & CAT_OPT_b); /* -n without -b */
- ns.nonempty = (opts & CAT_OPT_b); /* -b (with or without -n) */
- do {
- print_numbered_lines(&ns, *argv);
- } while (*++argv);
- fflush_stdout_and_exit(EXIT_SUCCESS);
+ return bb_cat(argv);
}