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ls(1): add a -v flag to sort naturally

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Add a -v flag for ls which sorts entries following a natural ordering
using strverscmp(3) (e.g. "bloem1 bloem9 bloem10" as opposed to
"bloem1 bloem10 bloem9").

Update the manual page and add a test case.

Reviewed by:	pauamma, bcr
Tested by:	pstef
Differential Revision:	https://reviews.freebsd.org/D36407
This commit is contained in:
Aymeric Wibo 2022-10-23 09:46:27 +02:00 committed by Piotr Pawel Stefaniak
parent 595746df6f
commit e2662256cd
6 changed files with 67 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
bin/ls/cmp.c
View File

@ -64,6 +64,20 @@ revnamecmp(const FTSENT *a, const FTSENT *b)
return (strcoll(b->fts_name, a->fts_name));
}
int
verscmp(const FTSENT *a, const FTSENT *b)
{
return (strverscmp(a->fts_name, b->fts_name));
}
int
revverscmp(const FTSENT *a, const FTSENT *b)
{
return (strverscmp(b->fts_name, a->fts_name));
}
int
modcmp(const FTSENT *a, const FTSENT *b)
{

2
bin/ls/extern.h
View File

@ -42,6 +42,8 @@ int modcmp(const FTSENT *, const FTSENT *);
int revmodcmp(const FTSENT *, const FTSENT *);
int namecmp(const FTSENT *, const FTSENT *);
int revnamecmp(const FTSENT *, const FTSENT *);
int verscmp(const FTSENT *, const FTSENT *);
int revverscmp(const FTSENT *, const FTSENT *);
int statcmp(const FTSENT *, const FTSENT *);
int revstatcmp(const FTSENT *, const FTSENT *);
int sizecmp(const FTSENT *, const FTSENT *);

22
bin/ls/ls.1
View File

@ -32,7 +32,7 @@
.\" @(#)ls.1 8.7 (Berkeley) 7/29/94
.\" $FreeBSD$
.\"
.Dd August 31, 2020
.Dd October 31, 2022
.Dt LS 1
.Os
.Sh NAME
@ -40,7 +40,7 @@
.Nd list directory contents
.Sh SYNOPSIS
.Nm
.Op Fl ABCFGHILPRSTUWZabcdfghiklmnopqrstuwxy1\&,
.Op Fl ABCFGHILPRSTUWZabcdfghiklmnopqrstuvwxy1\&,
.Op Fl -color Ns = Ns Ar when
.Op Fl D Ar format
.Op Ar
@ -399,6 +399,15 @@ of the file for sorting
.Pq Fl t
or printing
.Pq Fl l .
.It Fl v
Sort following a natural ordering, using
.Xr strverscmp 3
instead of
.Xr strcoll 3
as the comparison function.
E.g., files lexicographically ordered
"bloem1", "bloem10", and "bloem9" would instead be ordered
"bloem1", "bloem9", and "bloem10", as one would perhaps expect.
.It Fl w
Force raw printing of non-printable characters.
This is the default
@ -883,8 +892,10 @@ specification.
.Xr sort 1 ,
.Xr xterm 1 Pq Pa ports/x11/xterm ,
.Xr localeconv 3 ,
.Xr strcoll 3 ,
.Xr strftime 3 ,
.Xr strmode 3 ,
.Xr strverscmp 3 ,
.Xr termcap 5 ,
.Xr maclabel 7 ,
.Xr sticky 7 ,
@ -902,7 +913,7 @@ utility conforms to
and
.St -p1003.1-2008 .
The options
.Fl B , D , G , I , T , U , W , Z , b , h , w , y
.Fl B , D , G , I , T , U , W , Z , b , h , v , w , y
and
.Fl ,
are non-standard extensions.
@ -918,6 +929,11 @@ An
.Nm
command appeared in
.At v1 .
.Pp
The
.Fl v
option was added in
.Fx 14.0 .
.Sh BUGS
To maintain backward compatibility, the relationships between the many
options are quite complex.

22
bin/ls/ls.c
View File

@ -136,6 +136,7 @@ static int f_numericonly; /* don't convert uid/gid to name */
int f_octal_escape; /* like f_octal but use C escapes if possible */
static int f_recursive; /* ls subdirectories also */
static int f_reversesort; /* reverse whatever sort is used */
static int f_verssort; /* sort names using strverscmp(3) rather than strcoll(3) */
int f_samesort; /* sort time and name in same direction */
int f_sectime; /* print full time information */
static int f_singlecol; /* use single column output */
@ -275,7 +276,7 @@ main(int argc, char *argv[])
colorflag = COLORFLAG_AUTO;
#endif
while ((ch = getopt_long(argc, argv,
"+1ABCD:FGHILPRSTUWXZabcdfghiklmnopqrstuwxy,", long_opts,
"+1ABCD:FGHILPRSTUWXZabcdfghiklmnopqrstuvwxy,", long_opts,
NULL)) != -1) {
switch (ch) {
/*
@ -439,6 +440,9 @@ main(int argc, char *argv[])
case 's':
f_size = 1;
break;
case 'v':
f_verssort = 1;
break;
case 'w':
f_nonprint = 0;
f_octal = 0;
@ -566,10 +570,12 @@ main(int argc, char *argv[])
}
/* Select a sort function. */
if (f_reversesort) {
if (!f_timesort && !f_sizesort)
sortfcn = revnamecmp;
else if (f_sizesort)
if (f_sizesort)
sortfcn = revsizecmp;
else if (f_verssort)
sortfcn = revverscmp;
else if (!f_timesort)
sortfcn = revnamecmp;
else if (f_accesstime)
sortfcn = revacccmp;
else if (f_birthtime)
@ -579,10 +585,12 @@ main(int argc, char *argv[])
else /* Use modification time. */
sortfcn = revmodcmp;
} else {
if (!f_timesort && !f_sizesort)
sortfcn = namecmp;
else if (f_sizesort)
if (f_sizesort)
sortfcn = sizecmp;
else if (f_verssort)
sortfcn = verscmp;
else if (!f_timesort)
sortfcn = namecmp;
else if (f_accesstime)
sortfcn = acccmp;
else if (f_birthtime)

15
bin/ls/tests/ls_tests.sh
View File

@ -846,6 +846,20 @@ u_flag_body()
atf_check -e empty -o match:'a\.file.*b\.file' -s exit:0 ls -Cu
}
atf_test_case v_flag
v_flag_head()
{
atf_set "descr" "Verify that the output from ls -v sorts based on strverscmp(3)"
}
v_flag_body()
{
create_test_dir
atf_check -e empty -o empty -s exit:0 touch 000 00 01 010 09 0 1 9 10
atf_check -e empty -o match:"000.00.01.010.09.0.1.9.10" -s exit:0 sh -c 'ls -Cv'
}
atf_test_case x_flag
x_flag_head()
{
@ -960,6 +974,7 @@ atf_init_test_cases()
atf_add_test_case s_flag
atf_add_test_case t_flag
atf_add_test_case u_flag
atf_add_test_case v_flag
atf_add_test_case x_flag
atf_add_test_case y_flag
atf_add_test_case 1_flag

4
bin/ls/util.c
View File

@ -227,9 +227,9 @@ usage(void)
{
(void)fprintf(stderr,
#ifdef COLORLS
"usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuwxy1,] [--color=when] [-D format]"
"usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [--color=when] [-D format]"
#else
"usage: ls [-ABCFHILPRSTUWZabcdfghiklmnopqrstuwxy1,] [-D format]"
"usage: ls [-ABCFHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [-D format]"
#endif
" [file ...]\n");
exit(1);