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ls: add -f and -S options

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This commit is contained in:
Quentin Rameau 2015-03-18 19:26:42 +01:00 committed by sin
parent 787d99d896
commit 9fdef90feb
3 changed files with 36 additions and 8 deletions
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2
README
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@ -42,7 +42,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
=*| ln yes none =*| ln yes none
=*| logger yes none =*| logger yes none
=*| logname yes none =*| logname yes none
# ls no (-C), -S, -f, (-m), (-s), (-x) #* ls no (-C), (-m), (-s), (-x)
=*| md5sum non-posix none =*| md5sum non-posix none
=*| mkdir yes none =*| mkdir yes none
=*| mkfifo yes none =*| mkfifo yes none

16
ls.1
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@ -1,4 +1,4 @@
.Dd February 21, 2015 .Dd March 18, 2015
.Dt LS 1 .Dt LS 1
.Os sbase .Os sbase
.Sh NAME .Sh NAME
@ -6,7 +6,7 @@
.Nd list directory contents .Nd list directory contents
.Sh SYNOPSIS .Sh SYNOPSIS
.Nm .Nm
.Op Fl 1AacdFHhiLlnqrtUu .Op Fl 1AacdFfHhiLlnqrStUu
.Op Ar file ... .Op Ar file ...
.Sh DESCRIPTION .Sh DESCRIPTION
.Nm .Nm
@ -25,6 +25,16 @@ modification time for sorting or printing.
List directories themselves, not their contents. List directories themselves, not their contents.
.It Fl F .It Fl F
Append a file type indicator to all special files. Append a file type indicator to all special files.
.It Fl f
Like
.Fl U
but turns on
.Fl a
and disables
.Fl r ,
.Fl S
and
.Fl t .
.It Fl H .It Fl H
List information about the targets of symbolic links specified on the command List information about the targets of symbolic links specified on the command
line instead of the links themselves. line instead of the links themselves.
@ -52,6 +62,8 @@ List directory content recursively. The
flag is set implicitly. flag is set implicitly.
.It Fl r .It Fl r
Reverse the sort order. Reverse the sort order.
.It Fl S
Sort files by size (in decreasing order).
.It Fl t .It Fl t
Sort files by last file status/modification time instead of by name. Sort files by last file status/modification time instead of by name.
.It Fl U .It Fl U

26
ls.c
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@ -29,6 +29,7 @@ static int aflag = 0;
static int cflag = 0; static int cflag = 0;
static int dflag = 0; static int dflag = 0;
static int Fflag = 0; static int Fflag = 0;
static int fflag = 0;
static int Hflag = 0; static int Hflag = 0;
static int hflag = 0; static int hflag = 0;
static int iflag = 0; static int iflag = 0;
@ -38,6 +39,7 @@ static int nflag = 0;
static int pflag = 0; static int pflag = 0;
static int qflag = 0; static int qflag = 0;
static int Rflag = 0; static int Rflag = 0;
static int Sflag = 0;
static int rflag = 0; static int rflag = 0;
static int tflag = 0; static int tflag = 0;
static int Uflag = 0; static int Uflag = 0;
@ -176,12 +178,15 @@ output(const struct entry *ent)
static int static int
entcmp(const void *va, const void *vb) entcmp(const void *va, const void *vb)
{ {
int cmp = 0;
const struct entry *a = va, *b = vb; const struct entry *a = va, *b = vb;
if (tflag) if (Sflag)
return b->t - a->t; cmp = b->size - a->size;
else else if (tflag)
return strcmp(a->name, b->name); cmp = b->t - a->t;
return cmp ? cmp : strcmp(a->name, b->name);
} }
static void static void
@ -289,6 +294,11 @@ main(int argc, char *argv[])
case 'd': case 'd':
dflag = 1; dflag = 1;
break; break;
case 'f':
aflag = 1;
fflag = 1;
Uflag = 1;
break;
case 'F': case 'F':
Fflag = 1; Fflag = 1;
break; break;
@ -321,9 +331,15 @@ main(int argc, char *argv[])
Rflag = 1; Rflag = 1;
break; break;
case 'r': case 'r':
rflag = 1; if (!fflag)
rflag = 1;
break;
case 'S':
Sflag = 1;
tflag = 0;
break; break;
case 't': case 't':
Sflag = 0;
tflag = 1; tflag = 1;
break; break;
case 'U': case 'U':