From 3e816c1252cc55e3763f946622129d31ea1f0f20 Mon Sep 17 00:00:00 2001
From: Bernhard Reutner-Fischer
Date: Thu, 29 Mar 2007 10:30:50 +0000
Subject: - fold recurse, depthFirst and dereference params into one param
 flags.   Minor size improvement (-16b for size, -24b according to
 bloat-o-meter).

---
 libbb/recursive_action.c | 41 ++++++++++++++++++++---------------------
 1 file changed, 20 insertions(+), 21 deletions(-)

(limited to 'libbb')

diff --git a/libbb/recursive_action.c b/libbb/recursive_action.c
index 25a87b8..0c05315 100644
--- a/libbb/recursive_action.c
+++ b/libbb/recursive_action.c
@@ -22,7 +22,8 @@
  * is so stinking huge.
  */
 
-static int true_action(const char *fileName, struct stat *statbuf, void* userData, int depth)
+static int true_action(const char *fileName, struct stat *statbuf,
+						void* userData, int depth)
 {
 	return TRUE;
 }
@@ -41,11 +42,11 @@ static int true_action(const char *fileName, struct stat *statbuf, void* userDat
  */
 
 int recursive_action(const char *fileName,
-		int recurse, int followLinks, int depthFirst,
+		unsigned flags,
 		int (*fileAction)(const char *fileName, struct stat *statbuf, void* userData, int depth),
 		int (*dirAction)(const char *fileName, struct stat *statbuf, void* userData, int depth),
 		void* userData,
-		int depth)
+		const unsigned depth)
 {
 	struct stat statbuf;
 	int status;
@@ -54,22 +55,20 @@ int recursive_action(const char *fileName,
 
 	if (!fileAction) fileAction = true_action;
 	if (!dirAction) dirAction = true_action;
-
-	status = (followLinks ? stat : lstat)(fileName, &statbuf);
+	status = (flags & action_followLinks ? stat : lstat)(fileName, &statbuf);
 
 	if (status < 0) {
 #ifdef DEBUG_RECURS_ACTION
 		bb_error_msg("status=%d followLinks=%d TRUE=%d",
-				status, followLinks, TRUE);
+				status, flags & action_followLinks, TRUE);
 #endif
-		bb_perror_msg("%s", fileName);
-		return FALSE;
+		goto done_nak_warn;
 	}
 
 	/* If S_ISLNK(m), then we know that !S_ISDIR(m).
 	 * Then we can skip checking first part: if it is true, then
 	 * (!dir) is also true! */
-	if ( /* (!followLinks && S_ISLNK(statbuf.st_mode)) || */
+	if ( /* (!(flags & action_followLinks) && S_ISLNK(statbuf.st_mode)) || */
 	 !S_ISDIR(statbuf.st_mode)
 	) {
 		return fileAction(fileName, &statbuf, userData, depth);
@@ -77,15 +76,14 @@ int recursive_action(const char *fileName,
 
 	/* It's a directory (or a link to one, and followLinks is set) */
 
-	if (!recurse) {
+	if (!(flags & action_recurse)) {
 		return dirAction(fileName, &statbuf, userData, depth);
 	}
 
-	if (!depthFirst) {
+	if (!(flags & action_depthFirst)) {
 		status = dirAction(fileName, &statbuf, userData, depth);
 		if (!status) {
-			bb_perror_msg("%s", fileName);
-			return FALSE;
+			goto done_nak_warn;
 		}
 		if (status == SKIP)
 			return TRUE;
@@ -96,8 +94,7 @@ int recursive_action(const char *fileName,
 		/* findutils-4.1.20 reports this */
 		/* (i.e. it doesn't silently return with exit code 1) */
 		/* To trigger: "find -exec rm -rf {} \;" */
-		bb_perror_msg("%s", fileName);
-		return FALSE;
+		goto done_nak_warn;
 	}
 	status = TRUE;
 	while ((next = readdir(dir)) != NULL) {
@@ -106,21 +103,23 @@ int recursive_action(const char *fileName,
 		nextFile = concat_subpath_file(fileName, next->d_name);
 		if (nextFile == NULL)
 			continue;
-		if (!recursive_action(nextFile, TRUE, followLinks, depthFirst,
+		/* now descend into it, forcing recursion. */
+		if (!recursive_action(nextFile, flags | action_recurse,
 				fileAction, dirAction, userData, depth+1)) {
 			status = FALSE;
 		}
 		free(nextFile);
 	}
 	closedir(dir);
-	if (depthFirst) {
-		if (!dirAction(fileName, &statbuf, userData, depth)) {
-			bb_perror_msg("%s", fileName);
-			return FALSE;
-		}
+	if (flags & action_depthFirst &&
+		!dirAction(fileName, &statbuf, userData, depth)) {
+			goto done_nak_warn;
 	}
 
 	if (!status)
 		return FALSE;
 	return TRUE;
+done_nak_warn:
+	bb_perror_msg("%s", fileName);
+	return FALSE;
 }
-- 
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