implement -print0 for find

3 files changed, 24 insertions, 1 deletions

diff --git a/findutils/Config.in b/findutils/Config.in
index 3a9a506d7..8329a6c1f 100644
--- a/findutils/Config.in
+++ b/findutils/Config.in
@@ -11,6 +11,16 @@ config CONFIG_FIND
         help
           find is used to search your system to find specified files.
 
+config CONFIG_FEATURE_FIND_PRINT0
+        bool "Enable -print0 option"
+        default y
+        depends on CONFIG_FIND
+        help
+          Causes output names to be separated by a null character
+          rather than a newline.  This allows names that contain
+          newlines and other whitespace to be more easily
+          interpreted by other programs.
+
 config CONFIG_FEATURE_FIND_MTIME
         bool "Enable modified time matching (-mtime) option"
         default y
diff --git a/findutils/find.c b/findutils/find.c
index 7a71af9eb..17a1a5656 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -38,6 +38,9 @@ static const char msg_req_arg[] = "option `%s' requires an argument";
 static const char msg_invalid_arg[] = "invalid argument `%s' to `%s'";
 
 static char *pattern;
+#ifdef CONFIG_FEATURE_FIND_PRINT0
+static char printsep = '\n';
+#endif
 
 #ifdef CONFIG_FEATURE_FIND_TYPE
 static int type_mask = 0;
@@ -159,7 +162,11 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
         }
 #endif
 
+#ifdef CONFIG_FEATURE_FIND_PRINT0
+        printf("%s%c", fileName, printsep);
+#else
         puts(fileName);
+#endif
 no_match:
         return (TRUE);
 }
@@ -217,6 +224,10 @@ int find_main(int argc, char **argv)
                 else if (strcmp(argv[i], "-print") == 0) {
                         ;
                         }
+#ifdef CONFIG_FEATURE_FIND_PRINT0
+                else if (strcmp(argv[i], "-print0") == 0)
+                        printsep = '\0';
+#endif
                 else if (strcmp(argv[i], "-name") == 0) {
                         if (++i == argc)
                                 bb_error_msg_and_die(msg_req_arg, "-name");
diff --git a/include/usage.h b/include/usage.h
index d09c1108e..0e3ecae05 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -748,7 +748,9 @@ USE_FEATURE_DATE_ISOFMT( \
         "\t-follow\t\tDereference symbolic links\n" \
         "\t-name PATTERN\tFile name (leading directories removed) matches PATTERN\n" \
         "\t-print\t\tPrint (default and assumed)\n" \
-        USE_FEATURE_FIND_TYPE( \
+        USE_FEATURE_FIND_PRINT0( \
+        "\t-print0\t\tDelimit output with null characters rather than\n\t\t\tnewlines" \
+) USE_FEATURE_FIND_TYPE( \
         "\n\t-type X\t\tFiletype matches X (where X is one of: f,d,l,b,c,...)" \
 ) USE_FEATURE_FIND_PERM( \
         "\n\t-perm PERMS\tPermissions match any of (+NNN); all of (-NNN);\n\t\t\tor exactly (NNN)" \