Better non-ascii character filtering.

(Note: in some platform, the range of char is [-128, 127] rather than [0, 255].)

Change-Id: I338f625879fe66abbeafc13b682639cd67c887c9

1 files changed, 2 insertions, 1 deletions

diff --git a/main.c b/main.c
index 36f1d0e..9ad6443 100644
--- a/main.c
+++ b/main.c
@@ -35,6 +35,7 @@ SUCH DAMAGE.
 #include <nativehelper/jni.h>
 
 #include <assert.h>
+#include <ctype.h>
 #include <dlfcn.h>
 #include <stdio.h>
 #include <string.h>
@@ -701,7 +702,7 @@ static jstring getAttributes(JNIEnv *env, jobject jobj, jstring jfilename)
     snprintf(finalResult, finalBufLen, "%d %s", attributeCount, buf);
     int k;
     for (k = 0; k < finalBufLen; k++)
-        if (finalResult[k] > 127)
+        if (!isascii(finalResult[k]))
             finalResult[k] = '?';
     free(buf);