As noted, your choices are either NSFileManager methods of BSD/POSIX functions.
I would tend to start with the latter because, at the end of the week,
NSFileManager might not have the configurability you need to handle the
nitty-gritty like system "dot" or "dot dot" files, (not) following symbolic
links, etc. etc. But it may be just a personal preference. NSFileManager has
not always been my friend.
If you go the BSD route, also consider fts_open(), fts_read(), fts_close()
since these handle the recursion for you. A few weeks ago I wrote a
demo/template using these which is pasted in below. Because fts_read returns
directories first followed by their descendants, you'd need to create an array
and then "remove" items in reverse order, using appropriate functions for
regular files vs. directories.
And as Don Quixote implied, you need to think about exactly what you mean by
"remove".
#include <fts.h>
int doSomething(char * const path) {
printf("Doing %s\n", path) ;
return 0 ;
}
int doSomething_recursive(char * const path) {
// See man fts(3) for these. Modify these to do what you want:
int fts_options = FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV | FTS_SEEDOT ;
// fts_open requires a null-terminated array of paths.
// We only have one path.
char* paths[2] ;
paths[0] = path ;
paths[1] = NULL ;
FTS* ftsp = fts_open(paths, fts_options, NULL) ;
if (ftsp == NULL) {
return -2 ;
}
FTSENT* ftsPointer = 0 ;
while ((ftsPointer = fts_read(ftsp)) != NULL) {
/*
This will execute once for each item in the tree.
According to the man page fts(3):
"directories are visited two distinguishable times; in pre-order
(before any of their descendants are visited) and in post-order
(after all of their descendants have been visited)"
But my doSomething() only logs once for each directory, in pre-order.
Example:
Doing /Users/jk/Desktop/OW5/.
Doing /Users/jk/Desktop/OW5/..
Doing /Users/jk/Desktop/OW5/BkmxTemp/.
Doing /Users/jk/Desktop/OW5/BkmxTemp/..
Doing /Users/jk/Desktop/OW5/BkmxTemp/placesNo1Dump.txt
Doing /Users/jk/Desktop/OW5/BkmxTemp/placesOk1Dump.txt
Apparently a "visit" does not mean "returned by ftsPointer->fts_info"
*/
int result ;
switch (ftsPointer->fts_info) {
// List here the file types you want to doSomething to.
// Again, see man fts(3).
case FTS_D: // directory
case FTS_F: // regular file
case FTS_DOT: // system dot file, i.e. '.' or '..'
case FTS_SL: // symbolic link
result = doSomething(ftsPointer->fts_path) ;
if (result != 0) {
// Break out due to error
return result ;
}
break ;
default:
break;
}
}
fts_close(ftsp) ;
return 0 ;
}
int main (int argc, const char * argv[]) {
doSomething_recursive("/Users/jk/Desktop/OW5") ;
return 0 ;
}
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