hex_conversion: introduce ishex_string

1 files changed, 14 insertions, 0 deletions

diff --git a/include/hex_conversion.h b/include/hex_conversion.h
index 540472d..bb0fab1 100644
--- a/include/hex_conversion.h
+++ b/include/hex_conversion.h
@@ -16,6 +16,7 @@
 
 int convert_line(char *s);
 int ishex(unsigned char c);
+int ishex_string(const char *s, size_t l);
 unsigned char *convert_to_binary(char *hex, unsigned char *out);
 char *convert_from_binary(unsigned char *bin, size_t l, char *out);
 
@@ -42,6 +43,19 @@ inline int ishex(unsigned char c) {
     return 0;
 };
 
+inline int ishex_string(const char *s, size_t l) {
+    size_t i = 0;
+    if (s == 0)
+        return 0;
+    if (l == 0)
+        l = strlen(s);
+    for (; i<l; i++) {
+        if ( ! ishex_macro(s[i]) )
+            return 0;
+    }
+    return 1;
+}
+
 inline unsigned char *convert_to_binary(char *hex, unsigned char *out) {
     char tmp[3] = {0,0,0};
     size_t length, i;