+void trunccpy(char *dst, const char *src, size_t size);
+/* A convenience for the common case of dst being an array. */
+#define TRUNCCPY(dst, src) trunccpy(dst, src, sizeof (dst))
+
+bool HasPrefix(const char *s, const char *prefix);
+bool HasSuffix(const char *s, const char *suffix);
+bool HasSuffixC(const char *s, int c);