Add a -L option to wc(1), for finger compatibility with the GNU
wc utility. The -L option can be used to report the length of the longest line wc has seen in one or more files. It is disabled by default, and wc uses the standard `-lwc'. Submitted by: Sheldon Givens, sheldon at sigsegv.ca Reviewed by: kib MFC after: 1 week
This commit is contained in:
Giorgos Keramidas
parent
4e57bc3338
commit
f45dd01002
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=185714
@ -35,7 +35,7 @@
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.\" @(#)wc.1 8.2 (Berkeley) 4/19/94
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.\" $FreeBSD$
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.\"
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.Dd February 23, 2005
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.Dd December 6, 2008
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.Dt WC 1
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.Os
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.Sh NAME
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@ -43,7 +43,7 @@
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.Nd word, line, character, and byte count
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.Sh SYNOPSIS
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.Nm
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.Op Fl clmw
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.Op Fl Lclmw
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.Op Ar
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.Sh DESCRIPTION
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The
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@ -71,6 +71,15 @@ the last file.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl L
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The number of characters in the longest input line
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is written to the standard output.
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When more then one
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.Ar file
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argument is specified, the longest input line of
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.Em all
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files is reported as the value of the final
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.Dq total .
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.It Fl c
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The number of bytes in each input file
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is written to the standard output.
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@ -129,6 +138,10 @@ and
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as well as the totals for both:
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.Pp
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.Dl "wc -mlw report1 report2"
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.Pp
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Find the longest line in a list of files:
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.Pp
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.Dl "wc -L file1 file2 file3 | fgrep total"
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.Sh COMPATIBILITY
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Historically, the
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.Nm
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@ -154,6 +167,16 @@ in terms of the
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.Xr iswspace 3
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function, as required by
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.St -p1003.2 .
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.Pp
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The
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.Fl L
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option is a non-standard
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.Fx
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extension, compatible with the
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.Fl L
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option of the GNU
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.Nm
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utility.
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.Sh SEE ALSO
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.Xr iswspace 3
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.Sh STANDARDS
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@ -62,8 +62,8 @@ __FBSDID("$FreeBSD$");
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#include <wchar.h>
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#include <wctype.h>
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uintmax_t tlinect, twordct, tcharct;
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int doline, doword, dochar, domulti;
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uintmax_t tlinect, twordct, tcharct, tlongline;
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int doline, doword, dochar, domulti, dolongline;
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static int cnt(const char *);
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static void usage(void);
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@ -75,7 +75,7 @@ main(int argc, char *argv[])
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(void) setlocale(LC_CTYPE, "");
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while ((ch = getopt(argc, argv, "clmw")) != -1)
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while ((ch = getopt(argc, argv, "clmwL")) != -1)
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switch((char)ch) {
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case 'l':
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doline = 1;
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@ -87,6 +87,9 @@ main(int argc, char *argv[])
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dochar = 1;
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domulti = 0;
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break;
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case 'L':
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dolongline = 1;
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break;
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case 'm':
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domulti = 1;
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dochar = 0;
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@ -99,7 +102,7 @@ main(int argc, char *argv[])
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argc -= optind;
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/* Wc's flags are on by default. */
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if (doline + doword + dochar + domulti == 0)
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if (doline + doword + dochar + domulti + dolongline == 0)
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doline = doword = dochar = 1;
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errors = 0;
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@ -125,6 +128,8 @@ main(int argc, char *argv[])
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(void)printf(" %7ju", twordct);
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if (dochar || domulti)
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(void)printf(" %7ju", tcharct);
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if (dolongline)
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(void)printf(" %7ju", tlongline);
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(void)printf(" total\n");
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}
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exit(errors == 0 ? 0 : 1);
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@ -134,7 +139,7 @@ static int
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cnt(const char *file)
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{
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struct stat sb;
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uintmax_t linect, wordct, charct;
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uintmax_t linect, wordct, charct, llct, tmpll;
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int fd, len, warned;
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size_t clen;
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short gotsp;
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@ -143,7 +148,7 @@ cnt(const char *file)
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wchar_t wch;
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mbstate_t mbs;
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linect = wordct = charct = 0;
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linect = wordct = charct = llct = tmpll = 0;
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if (file == NULL) {
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file = "stdin";
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fd = STDIN_FILENO;
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@ -168,8 +173,13 @@ cnt(const char *file)
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}
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charct += len;
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for (p = buf; len--; ++p)
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if (*p == '\n')
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if (*p == '\n') {
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if (tmpll > llct)
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llct = tmpll;
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tmpll = 0;
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++linect;
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} else
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tmpll++;
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}
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tlinect += linect;
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(void)printf(" %7ju", linect);
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@ -177,6 +187,11 @@ cnt(const char *file)
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tcharct += charct;
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(void)printf(" %7ju", charct);
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}
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if (dolongline) {
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if (llct > tlongline)
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tlongline = llct;
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(void)printf(" %7ju", tlongline);
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}
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(void)close(fd);
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return (0);
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}
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@ -229,10 +244,16 @@ word: gotsp = 1;
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else if (clen == 0)
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clen = 1;
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charct++;
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if (wch != L'\n')
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tmpll++;
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len -= clen;
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p += clen;
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if (wch == L'\n')
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if (wch == L'\n') {
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if (tmpll > llct)
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llct = tmpll;
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tmpll = 0;
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++linect;
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}
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if (iswspace(wch))
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gotsp = 1;
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else if (gotsp) {
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@ -256,6 +277,11 @@ word: gotsp = 1;
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tcharct += charct;
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(void)printf(" %7ju", charct);
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}
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if (dolongline) {
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if (llct > tlongline)
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tlongline = llct;
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(void)printf(" %7ju", llct);
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}
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(void)close(fd);
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return (0);
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}
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@ -263,6 +289,6 @@ word: gotsp = 1;
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static void
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usage()
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{
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(void)fprintf(stderr, "usage: wc [-clmw] [file ...]\n");
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(void)fprintf(stderr, "usage: wc [-Lclmw] [file ...]\n");
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exit(1);
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}
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