Create a branch for header work.

svn path=/branches/header-work/; revision=45691

lib/sdk/crt/mbstring/mbstok.c

@@ -0,0 +1,57 @@
+#include <stdlib.h>
+#include <mbstring.h>
+
+/*
+ * @implemented
+ */
+unsigned char * _mbstok(unsigned char *s, const unsigned char *delim)
+{
+  const unsigned char *spanp;
+  int c, sc;
+  unsigned char *tok;
+  static unsigned char *last;
+
+
+  if (s == NULL && (s = last) == NULL)
+    return (NULL);
+
+  /*
+   * Skip (span) leading delimiters (s += strspn(s, delim), sort of).
+   */
+ cont:
+  c = *s;
+  s = _mbsinc(s);
+
+  for (spanp = delim; (sc = *spanp) != 0; spanp = _mbsinc(spanp)) {
+    if (c == sc)
+      goto cont;
+  }
+
+  if (c == 0) {			/* no non-delimiter characters */
+    last = NULL;
+    return (NULL);
+  }
+  tok = s - 1;
+
+  /*
+   * Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
+   * Note that delim must have one NUL; we stop if we see that, too.
+   */
+  for (;;) {
+    c = *s;
+    s = _mbsinc(s);
+    spanp = delim;
+    do {
+      if ((sc = *spanp) == c) {
+	if (c == 0)
+	  s = NULL;
+	else
+	  s[-1] = 0;
+	last = s;
+	return (tok);
+      }
+      spanp = _mbsinc(spanp);
+    } while (sc != 0);
+  }
+  /* NOTREACHED */
+}