Date: Thu, 14 Dec 2000 03:48:04 +0200 From: Peter Pentchev <roam@orbitel.bg> To: arch@FreeBSD.org Subject: add -I ignoremask option to du(1) Message-ID: <20001214034803.C575@ringworld.oblivion.bg>
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Hi,
Is there a reason no one has done this yet? :) I find it particularly
nice for e.g. excluding CVS/ subdirs from du output. And yes, I know
this can be done with a bit of find(1) hackery, but the attached patch
seems almost good enough to me (modulo the **ignmasks storage; maybe
a list would be in order there, but I think there would very rarely
be many more than 2 or 3 ignore masks).
Comments? Flames? "Shut-up-already"'s? :)
G'luck,
Peter
--
This sentence would be seven words long if it were six words shorter.
Index: src/usr.bin/du/du.1
===================================================================
RCS file: /home/ncvs/src/usr.bin/du/du.1,v
retrieving revision 1.18
diff -u -r1.18 du.1
--- src/usr.bin/du/du.1 2000/11/20 19:20:41 1.18
+++ src/usr.bin/du/du.1 2000/12/14 01:38:10
@@ -41,6 +41,7 @@
.Sh SYNOPSIS
.Nm
.Op Fl P | Fl H | Fl L
+.Op Fl I Ar mask
.Op Fl a | s | d Ar depth
.Op Fl c
.Op Fl h | k
@@ -72,6 +73,9 @@
hierarchies are not followed.
.It Fl L
Symbolic links on the command line and in file hierarchies are followed.
+.It Fl I Ar mask
+Ignore files and directories matching the specified
+.Ar mask .
.It Fl a
Display an entry for each file in a file hierarchy.
.It Fl h
Index: src/usr.bin/du/du.c
===================================================================
RCS file: /home/ncvs/src/usr.bin/du/du.c,v
retrieving revision 1.19
diff -u -r1.19 du.c
--- src/usr.bin/du/du.c 2000/03/26 14:21:57 1.19
+++ src/usr.bin/du/du.c 2000/12/14 01:38:10
@@ -54,6 +54,7 @@
#include <err.h>
#include <errno.h>
+#include <fnmatch.h>
#include <fts.h>
#include <math.h>
#include <stdio.h>
@@ -88,10 +89,16 @@
int unitp [] = { NONE, KILO, MEGA, GIGA, TERA, PETA };
+char ** ignmasks = NULL;
+int igncount = 0;
+
int linkchk __P((FTSENT *));
static void usage __P((void));
void prthumanval __P((double));
unit_t unit_adjust __P((double *));
+void ignoreadd __P((char *));
+void ignoreclean __P((void));
+int ignorep __P((FTSENT *));
int
main(argc, argv)
@@ -113,11 +120,14 @@
ftsoptions = 0;
depth = INT_MAX;
- while ((ch = getopt(argc, argv, "HLPasd:chkrx")) != -1)
+ while ((ch = getopt(argc, argv, "HI:LPasd:chkrx")) != -1)
switch (ch) {
case 'H':
Hflag = 1;
break;
+ case 'I':
+ ignoreadd(optarg);
+ break;
case 'L':
if (Pflag)
usage();
@@ -224,8 +234,13 @@
while ((p = fts_read(fts)) != NULL) {
switch (p->fts_info) {
case FTS_D: /* Ignore. */
+ if (ignorep(p))
+ fts_set(fts, p, FTS_SKIP);
break;
case FTS_DP:
+ if (ignorep(p))
+ break;
+
p->fts_parent->fts_number +=
p->fts_number += p->fts_statp->st_blocks;
@@ -249,6 +264,9 @@
rval = 1;
break;
default:
+ if (ignorep(p))
+ break;
+
if (p->fts_statp->st_nlink > 1 && linkchk(p))
break;
@@ -281,6 +299,7 @@
}
}
+ ignoreclean();
exit(rval);
}
@@ -368,4 +387,47 @@
(void)fprintf(stderr,
"usage: du [-H | -L | -P] [-a | -s | -d depth] [-c] [-h | -k] [-x] [file ...]\n");
exit(EX_USAGE);
+}
+
+void
+ignoreadd(mask)
+ char *mask;
+{
+ char *newmask, **newign;
+ unsigned l;
+
+ l = strlen(mask) + 1;
+ if (newmask = (char *) malloc(l + 1), newmask == NULL)
+ err(1, "can't allocate memory");
+ strlcpy(newmask, mask, l+1); /* strcpy? playing it safe.. */
+ if (newign = realloc(ignmasks, (igncount + 1) * sizeof(*ignmasks)),
+ newign == NULL)
+ err(1, "can't allocate memory");
+ newign[igncount++] = newmask;
+ ignmasks = newign;
+}
+
+void
+ignoreclean()
+{
+ int i;
+
+ for(i = 0; i < igncount; i++)
+ free(ignmasks[i]);
+ memset(ignmasks, 0, igncount * sizeof(*ignmasks));
+ free(ignmasks);
+}
+
+int
+ignorep(ent)
+ FTSENT *ent;
+{
+ int i;
+
+ if (igncount == 0)
+ return 0;
+ for(i = 0; i < igncount; i++)
+ if (fnmatch(ignmasks[i], ent->fts_name, 0) != FNM_NOMATCH)
+ return 1;
+ return 0;
}
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