strbuf_split_buf(): simplify iteration

diff --git a/strbuf.c b/strbuf.c
index 4b9e30cadcd1ff45e7d4f23b210b22006445da91..c7cd529b3b46e2ea0fc58f2bad89a290cf4e5546 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -108,33 +108,27 @@ void strbuf_ltrim(struct strbuf *sb)
 
 struct strbuf **strbuf_split_buf(const char *str, size_t slen, int delim, int max)
 {
-       int alloc = 2, pos = 0;
-       const char *n, *p;
-       struct strbuf **ret;
+       struct strbuf **ret = NULL;
+       size_t nr = 0, alloc = 0;
        struct strbuf *t;
 
-       ret = xcalloc(alloc, sizeof(struct strbuf *));
-       p = n = str;
-       while (n < str + slen) {
-               int len;
-               if (max <= 0 || pos + 1 < max)
-                       n = memchr(n, delim, slen - (n - str));
-               else
-                       n = NULL;
-               if (pos + 1 >= alloc) {
-                       alloc = alloc * 2;
-                       ret = xrealloc(ret, sizeof(struct strbuf *) * alloc);
+       while (slen) {
+               int len = slen;
+               if (max <= 0 || nr + 1 < max) {
+                       const char *end = memchr(str, delim, slen);
+                       if (end)
+                               len = end - str + 1;
                }
-               if (!n)
-                       n = str + slen - 1;
-               len = n - p + 1;
                t = xmalloc(sizeof(struct strbuf));
                strbuf_init(t, len);
-               strbuf_add(t, p, len);
-               ret[pos] = t;
-               ret[++pos] = NULL;
-               p = ++n;
+               strbuf_add(t, str, len);
+               ALLOC_GROW(ret, nr + 2, alloc);
+               ret[nr++] = t;
+               str += len;
+               slen -= len;
        }
+       ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */
+       ret[nr] = NULL;
        return ret;
 }