add strnlen and isdigit helpers

This is missing and will come in handy for path parsing.

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/include/toxic/string.h b/src/include/toxic/string.h
index 69d8bd2..3cb4a30 100644
--- a/src/include/toxic/string.h
+++ b/src/include/toxic/string.h
@@ -3,7 +3,11 @@
 
 #include <stddef.h>
 
+#define NULL	((void *)0)
+
+bool isdigit(char c);
 size_t strlen(const char *s);
+size_t strnlen(const char *s, size_t maxlen);
 char *strcpy(char *restrict dst, const char *restrict src);
 
 void *memset(void *s, int c, size_t n);