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wc: add support for -m 

function                                             old     new   delta
wc_main                                              601     637     +36
packed_usage                                       27357   27358      +1

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
Denys Vlasenko 2010-10-04 17:08:14 +02:00
parent 09e7dafbfe
commit afc7b4c0d8
2 changed files with 46 additions and 29 deletions
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60
coreutils/wc.c
View File

@ -7,7 +7,7 @@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- option -m is not currently supported. */
/* BB_AUDIT SUSv3 compliant. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/wc.html */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
@ -19,10 +19,6 @@
* 3) no checking of ferror on EOF returns
* 4) isprint() wasn't considered when word counting.
*
* TODO:
*
* When locale support is enabled, count multibyte chars in the '-m' case.
*
* NOTES:
*
* The previous busybox wc attempted an optimization using stat for the
@ -40,8 +36,8 @@
*
* for which 'wc -c' should output '0'.
*/
#include "libbb.h"
#include "unicode.h"
#if !ENABLE_LOCALE_SUPPORT
# undef isprint
@ -58,12 +54,39 @@
# define COUNT_FMT "u"
#endif
/* We support -m even when UNICODE_SUPPORT is off,
* we just don't advertise it in help text,
* since it is the same as -c in this case.
*/
//usage:#define wc_trivial_usage
//usage: "[-c"IF_UNICODE_SUPPORT("m")"lwL] [FILE]..."
//usage:
//usage:#define wc_full_usage "\n\n"
//usage: "Count lines, words, and bytes for each FILE (or stdin)\n"
//usage: "\nOptions:"
//usage: "\n -c Count bytes"
//usage: IF_UNICODE_SUPPORT(
//usage: "\n -m Count characters"
//usage: )
//usage: "\n -l Count newlines"
//usage: "\n -w Count words"
//usage: "\n -L Print longest line length"
//usage:
//usage:#define wc_example_usage
//usage: "$ wc /etc/passwd\n"
//usage: " 31 46 1365 /etc/passwd\n"
/* Order is important if we want to be compatible with
* column order in "wc -cmlwL" output:
*/
enum {
WC_LINES = 0,
WC_WORDS = 1,
WC_CHARS = 2,
WC_LENGTH = 3,
NUM_WCS = 4,
WC_LINES = 0,
WC_WORDS = 1,
WC_UNICHARS = 2,
WC_CHARS = 3,
WC_LENGTH = 4,
NUM_WCS = 5,
};
int wc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
@ -79,7 +102,9 @@ int wc_main(int argc UNUSED_PARAM, char **argv)
smallint status = EXIT_SUCCESS;
unsigned print_type;
print_type = getopt32(argv, "lwcL");
init_unicode();
print_type = getopt32(argv, "lwcmL");
if (print_type == 0) {
print_type = (1 << WC_LINES) | (1 << WC_WORDS) | (1 << WC_CHARS);
@ -130,9 +155,16 @@ int wc_main(int argc UNUSED_PARAM, char **argv)
}
goto DO_EOF; /* Treat an EOF as '\r'. */
}
++counts[WC_CHARS];
if (isprint_asciionly(c)) {
/* Cater for -c and -m */
++counts[WC_CHARS];
if (unicode_status != UNICODE_ON /* every byte is a new char */
|| (c & 0xc0) != 0x80 /* it isn't a 2nd+ byte of a Unicode char */
) {
++counts[WC_UNICHARS];
}
if (isprint_asciionly(c)) { /* FIXME: not unicode-aware */
++linepos;
if (!isspace(c)) {
in_word = 1;

15
include/usage.src.h
View File

@ -4764,21 +4764,6 @@ INSERT
"\n" \
"\nUse 500ms to specify period in milliseconds" \
#define wc_trivial_usage \
"[OPTIONS] [FILE]..."
#define wc_full_usage "\n\n" \
"Print line, word, and byte counts for each FILE (or stdin),\n" \
"and a total line if more than one FILE is specified\n" \
"\nOptions:" \
"\n -c Print the byte counts" \
"\n -l Print the newline counts" \
"\n -L Print the length of the longest line" \
"\n -w Print the word counts" \
#define wc_example_usage \
"$ wc /etc/passwd\n" \
" 31 46 1365 /etc/passwd\n"
#define wget_trivial_usage \
IF_FEATURE_WGET_LONG_OPTIONS( \
"[-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE]\n" \