On 9/10/19 10:06 PM, Aaro Koskinen wrote:
Implement -empty.
Signed-off-by: Aaro Koskinen <[email protected]>
---
findutils/find.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/findutils/find.c b/findutils/find.c
index d6679bd08..3e4ae3266 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -203,6 +203,14 @@
//config: WARNING: This option can do much harm if used wrong. Busybox
will not
//config: try to protect the user from doing stupid things. Use with care.
//config:
+//config:config FEATURE_FIND_EMPTY
+//config: bool "Enable -empty: match empty files or directories"
+//config: default y
+//config: depends on FIND
+//config: help
+//config: Support the 'find -empty' option to find empty regular files
+//config: or directories.
+//config:
//config:config FEATURE_FIND_PATH
//config: bool "Enable -path: match pathname with shell pattern"
//config: default y
@@ -333,6 +341,9 @@
//usage: IF_FEATURE_FIND_DELETE(
//usage: "\n -delete Delete current file/directory. Turns on -depth
option"
//usage: )
+//usage: IF_FEATURE_FIND_EMPTY(
+//usage: "\n -empty Match empty file/directory."
+//usage: )
//usage: IF_FEATURE_FIND_QUIT(
//usage: "\n -quit Exit"
//usage: )
@@ -396,6 +407,7 @@ IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
IF_FEATURE_FIND_PRUNE( ACTS(prune))
IF_FEATURE_FIND_QUIT( ACTS(quit))
IF_FEATURE_FIND_DELETE( ACTS(delete))
+IF_FEATURE_FIND_EMPTY( ACTS(empty))
IF_FEATURE_FIND_EXEC( ACTS(exec,
char **exec_argv; /* -exec ARGS */
unsigned *subst_count;
@@ -824,6 +836,31 @@ ACTF(delete)
return TRUE;
}
#endif
+#if ENABLE_FEATURE_FIND_EMPTY
+ACTF(empty)
+{
+ if (S_ISDIR(statbuf->st_mode)) {
+ DIR *dir;
+
+ dir = opendir(fileName);
+ if (!dir) {
+ bb_simple_perror_msg(fileName);
+ return FALSE;
+ } else {
+ struct dirent *dent;
+ char n = 0;
+
+ while ((dent = readdir(dir)) != NULL &&
+ DOT_OR_DOTDOT(dent->d_name) &&
+ n++ < 2)
+ ;
+ closedir(dir);
+ return !dent;
+ }
+ }
+ return S_ISREG(statbuf->st_mode) && !statbuf->st_size;
+}
+#endif
#if ENABLE_FEATURE_FIND_CONTEXT
ACTF(context)
{
@@ -989,6 +1026,7 @@ static action*** parse_params(char **argv)
IF_FEATURE_FIND_PRUNE( PARM_prune ,)
IF_FEATURE_FIND_QUIT( PARM_quit ,)
IF_FEATURE_FIND_DELETE( PARM_delete ,)
+ IF_FEATURE_FIND_EMPTY( PARM_empty ,)
IF_FEATURE_FIND_EXEC( PARM_exec ,)
IF_FEATURE_FIND_EXECUTABLE(PARM_executable,)
IF_FEATURE_FIND_PAREN( PARM_char_brace,)
@@ -1034,6 +1072,7 @@ static action*** parse_params(char **argv)
IF_FEATURE_FIND_PRUNE( "-prune\0" )
IF_FEATURE_FIND_QUIT( "-quit\0" )
IF_FEATURE_FIND_DELETE( "-delete\0" )
+ IF_FEATURE_FIND_EMPTY( "-empty\0" )
IF_FEATURE_FIND_EXEC( "-exec\0" )
IF_FEATURE_FIND_EXECUTABLE("-executable\0")
IF_FEATURE_FIND_PAREN( "(\0" )
@@ -1203,6 +1242,12 @@ static action*** parse_params(char **argv)
(void) ALLOC_ACTION(delete);
}
#endif
+#if ENABLE_FEATURE_FIND_EMPTY
+ else if (parm == PARM_empty) {
+ dbg("%d", __LINE__);
+ (void) ALLOC_ACTION(empty);
+ }
+#endif
#if ENABLE_FEATURE_FIND_EXEC
else if (parm == PARM_exec) {
int i;
Thanks a lot! Will try it out in a second.
Bye
Tim
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