mirror of
https://github.com/sheumann/hush.git
synced 2024-06-06 02:29:31 +00:00
nl: new applet; also implement cat -nb (similar functionality to nl)
function old new delta nl_main - 201 +201 print_numbered_lines - 115 +115 cat_main 36 149 +113 static.nl_longopts - 106 +106 packed_usage 31081 31182 +101 applet_main 1488 1492 +4 applet_names 2575 2578 +3 applet_suid 93 94 +1 applet_install_loc 186 187 +1 ------------------------------------------------------------------------------ (add/remove: 4/0 grow/shrink: 6/0 up/down: 645/0) Total: 645 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
5d561ef634
commit
d88f94a5df
|
|
@ -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);
|
||||
}
|
||||
|
|
|
|||
100
coreutils/nl.c
Normal file
100
coreutils/nl.c
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
/* vi: set sw=4 ts=4: */
|
||||
/*
|
||||
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
||||
*/
|
||||
//config:config NL
|
||||
//config: bool "nl"
|
||||
//config: default y
|
||||
//config: help
|
||||
//config: nl is used to number lines of files.
|
||||
|
||||
//applet:IF_UNIQ(APPLET(nl, BB_DIR_USR_BIN, BB_SUID_DROP))
|
||||
|
||||
//kbuild:lib-$(CONFIG_UNIQ) += nl.o
|
||||
|
||||
//usage:#define nl_trivial_usage
|
||||
//usage: "[OPTIONS] [FILE]..."
|
||||
//usage:#define nl_full_usage "\n\n"
|
||||
//usage: "Write FILEs to standard output with line numbers added\n"
|
||||
//usage: "\n -b STYLE Which lines to number - a: all, t: nonempty, n: none"
|
||||
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^TODO: support "pBRE": number only lines thatmatch regexp BRE"
|
||||
////usage: "\n -f STYLE footer lines"
|
||||
////usage: "\n -h STYLE header lines"
|
||||
////usage: "\n -d CC use CC for separating logical pages"
|
||||
//usage: "\n -i N Line number increment"
|
||||
////usage: "\n -l NUMBER group of NUMBER empty lines counted as one"
|
||||
////usage: "\n -n FORMAT lneft justified, no leading zeros; rn or rz"
|
||||
////usage: "\n -p do not reset line numbers at logical pages (huh?)"
|
||||
//usage: "\n -s STRING Use STRING as line number separator"
|
||||
//usage: "\n -v N Start from N"
|
||||
//usage: "\n -w N Width of line numbers"
|
||||
|
||||
/* By default, selects -v1 -i1 -l1 -sTAB -w6 -nrn -hn -bt -fn */
|
||||
|
||||
#include "libbb.h"
|
||||
|
||||
void FAST_FUNC print_numbered_lines(struct number_state *ns, const char *filename)
|
||||
{
|
||||
FILE *fp = fopen_or_warn_stdin(filename);
|
||||
unsigned N = ns->start;
|
||||
char *line;
|
||||
|
||||
while ((line = xmalloc_fgetline(fp)) != NULL) {
|
||||
if (ns->all
|
||||
|| (ns->nonempty && line[0])
|
||||
) {
|
||||
printf("%*u%s%s\n", ns->width, N, ns->sep, line);
|
||||
N += ns->inc;
|
||||
} else if (ns->empty_str)
|
||||
fputs(ns->empty_str, stdout);
|
||||
free(line);
|
||||
}
|
||||
|
||||
fclose(fp);
|
||||
}
|
||||
|
||||
int nl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int nl_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
unsigned opt;
|
||||
struct number_state ns;
|
||||
const char *opt_b = "t";
|
||||
enum {
|
||||
OPT_p = (1 << 0),
|
||||
};
|
||||
#if ENABLE_LONG_OPTS
|
||||
static const char nl_longopts[] ALIGN1 =
|
||||
"body-numbering\0" Required_argument "b"
|
||||
// "footer-numbering\0" Required_argument "f" - not implemented yet
|
||||
// "header-numbering\0" Required_argument "h" - not implemented yet
|
||||
// "section-delimiter\0" Required_argument "d" - not implemented yet
|
||||
"line-increment\0" Required_argument "i"
|
||||
// "join-blank-lines\0" Required_argument "l" - not implemented yet
|
||||
// "number-format\0" Required_argument "n" - not implemented yet
|
||||
"no-renumber\0" No_argument "p" // no-op so far
|
||||
"number-separator\0" Required_argument "s"
|
||||
"starting-line-number\0"Required_argument "v"
|
||||
"number-width\0" Required_argument "w"
|
||||
;
|
||||
|
||||
applet_long_options = nl_longopts;
|
||||
#endif
|
||||
ns.width = 6;
|
||||
ns.start = 1;
|
||||
ns.inc = 1;
|
||||
ns.sep = "\t";
|
||||
opt = getopt32(argv, "pw:+s:v:+i:+b:", &ns.width, &ns.sep, &ns.start, &ns.inc, &opt_b);
|
||||
ns.all = (opt_b[0] == 'a');
|
||||
ns.nonempty = (opt_b[0] == 't');
|
||||
ns.empty_str = xasprintf("%*s\n", ns.width + strlen(ns.sep), "");
|
||||
|
||||
argv += optind;
|
||||
if (!*argv)
|
||||
*--argv = (char*)"-";
|
||||
|
||||
do {
|
||||
print_numbered_lines(&ns, *argv);
|
||||
} while (*++argv);
|
||||
|
||||
fflush_stdout_and_exit(EXIT_SUCCESS);
|
||||
}
|
||||
|
|
@ -1271,6 +1271,16 @@ int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|||
void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC;
|
||||
#endif
|
||||
|
||||
struct number_state {
|
||||
unsigned width;
|
||||
unsigned start;
|
||||
unsigned inc;
|
||||
const char *sep;
|
||||
const char *empty_str;
|
||||
smallint all, nonempty;
|
||||
};
|
||||
void print_numbered_lines(struct number_state *ns, const char *filename) FAST_FUNC;
|
||||
|
||||
|
||||
/* Networking */
|
||||
/* This structure defines protocol families and their handlers. */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user