o cleanup

tools/bsnes/lib/nall/string/strl.cpp

@@ -0,0 +1,47 @@
+#ifdef NALL_STRING_CPP
+
+//strlcpy, strlcat based on OpenBSD implementation by Todd C. Miller
+
+//return = strlen(src)
+size_t strlcpy(char *dest, const char *src, size_t length) {
+  char *d = dest;
+  const char *s = src;
+  size_t n = length;
+
+  if(n) {
+    while(--n && (*d++ = *s++)); //copy as many bytes as possible, or until null terminator reached
+  }
+
+  if(!n) {
+    if(length) *d = 0;
+    while(*s++); //traverse rest of s, so that s - src == strlen(src)
+  }
+
+  return (s - src - 1); //return length of copied string, sans null terminator
+}
+
+//return = strlen(src) + min(length, strlen(dest))
+size_t strlcat(char *dest, const char *src, size_t length) {
+  char *d = dest;
+  const char *s = src;
+  size_t n = length;
+
+  while(n-- && *d) d++; //find end of dest
+  size_t dlength = d - dest;
+  n = length - dlength; //subtract length of dest from maximum string length
+
+  if(!n) return dlength + strlen(s);
+
+  while(*s) {
+    if(n != 1) {
+      *d++ = *s;
+      n--;
+    }
+    s++;
+  }
+  *d = 0;
+
+  return dlength + (s - src); //return length of resulting string, sans null terminator
+}
+
+#endif