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Update dftw.c #1

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62d5bcb
Update dftw.c
pedmon Jun 27, 2023
64d705b
Support subtree pruning from dftw callbacks (#1)
nathanweeks Apr 20, 2026
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8 changes: 8 additions & 0 deletions libdftw.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,14 @@ enum {
#define FTW_NS FTW_NS
};

#define DFTW_CONTINUE 0
#define DFTW_SKIP_SUBTREE 1

/*
* Callbacks should return DFTW_CONTINUE to continue traversal. Returning
* DFTW_SKIP_SUBTREE from an FTW_D callback skips descending into that
* directory while allowing the walk to continue elsewhere.
*/
void dftw(const char *dirpath,
int (*fn) (const char *fpath, const struct stat *sb, int typeflag));

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9 changes: 6 additions & 3 deletions libdftw/dftw.c
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
#include <stdlib.h>
#include <libcircle.h>

#include <dirent.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
Expand Down Expand Up @@ -36,6 +36,7 @@ void DFTW_create(CIRCLE_handle* handle)
void DFTW_process(CIRCLE_handle* handle)
{
struct stat st;
int cb_rc = DFTW_CONTINUE;
int status = 0;

char temp[CIRCLE_MAX_STRING_LEN];
Expand All @@ -51,8 +52,10 @@ void DFTW_process(CIRCLE_handle* handle)
}

else if(S_ISDIR(st.st_mode) && !(S_ISLNK(st.st_mode))) {
_DFTW_CB(temp, &st, FTW_D);
DFTW_process_dir(temp, handle);
cb_rc = _DFTW_CB(temp, &st, FTW_D);
if(cb_rc == DFTW_CONTINUE) {
DFTW_process_dir(temp, handle);
}
}
else if(S_ISREG(st.st_mode)) {
_DFTW_CB(temp, &st, FTW_F);
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