add stralloc_diff and stralloc_diffs

2002-10-28 20:15:03 +00:00
parent e108646f26
commit 2cd4641da9
8 changed files with 93 additions and 2 deletions
--- a/stralloc/stralloc_diffs.c
+++ b/stralloc/stralloc_diffs.c
@@ -0,0 +1,14 @@
+#include "stralloc.h"
+#include "byte.h"
+#include "str.h"
+
+extern int stralloc_diffs(const stralloc* a,const char* b) {
+  register unsigned int i;
+  register int j;
+  for (i=0;;++i) {
+    if (i==a->len) return (!b[i])?0:-1; if (!b[i]) return 1;
+    if ((j=(a->s[i]-b[i]))) return j;
+  }
+  return j;
+}
+