unpack-trees: remove redundant path search in verify_absent

[git.git] / strbuf.c

diff --git a/strbuf.c b/strbuf.c
index 5efcfc8860a82766b53a0d579fbdd0844d0f9b62..720737d856b694bc5239f0c18af372959c99e744 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -60,6 +60,18 @@ void strbuf_grow(struct strbuf *sb, size_t extra)
        ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
 }
 
+void strbuf_trim(struct strbuf *sb)
+{
+       char *b = sb->buf;
+       while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
+               sb->len--;
+       while (sb->len > 0 && isspace(*b)) {
+               b++;
+               sb->len--;
+       }
+       memmove(sb->buf, b, sb->len);
+       sb->buf[sb->len] = '\0';
+}
 void strbuf_rtrim(struct strbuf *sb)
 {
        while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
@@ -67,7 +79,65 @@ void strbuf_rtrim(struct strbuf *sb)
        sb->buf[sb->len] = '\0';
 }
 
-int strbuf_cmp(struct strbuf *a, struct strbuf *b)
+void strbuf_ltrim(struct strbuf *sb)
+{
+       char *b = sb->buf;
+       while (sb->len > 0 && isspace(*b)) {
+               b++;
+               sb->len--;
+       }
+       memmove(sb->buf, b, sb->len);
+       sb->buf[sb->len] = '\0';
+}
+
+void strbuf_tolower(struct strbuf *sb)
+{
+       int i;
+       for (i = 0; i < sb->len; i++)
+               sb->buf[i] = tolower(sb->buf[i]);
+}
+
+struct strbuf **strbuf_split(const struct strbuf *sb, int delim)
+{
+       int alloc = 2, pos = 0;
+       char *n, *p;
+       struct strbuf **ret;
+       struct strbuf *t;
+
+       ret = xcalloc(alloc, sizeof(struct strbuf *));
+       p = n = sb->buf;
+       while (n < sb->buf + sb->len) {
+               int len;
+               n = memchr(n, delim, sb->len - (n - sb->buf));
+               if (pos + 1 >= alloc) {
+                       alloc = alloc * 2;
+                       ret = xrealloc(ret, sizeof(struct strbuf *) * alloc);
+               }
+               if (!n)
+                       n = sb->buf + sb->len - 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;
+       }
+       return ret;
+}
+
+void strbuf_list_free(struct strbuf **sbs)
+{
+       struct strbuf **s = sbs;
+
+       while (*s) {
+               strbuf_release(*s);
+               free(*s++);
+       }
+       free(sbs);
+}
+
+int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
 {
        int cmp;
        if (a->len < b->len) {
@@ -146,11 +216,12 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
        strbuf_setlen(sb, sb->len + len);
 }
 
-void strbuf_expand(struct strbuf *sb, const char *format,
-                   const char **placeholders, expand_fn_t fn, void *context)
+void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
+                  void *context)
 {
        for (;;) {
-               const char *percent, **p;
+               const char *percent;
+               size_t consumed;
 
                percent = strchrnul(format, '%');
                strbuf_add(sb, format, percent - format);
@@ -158,14 +229,10 @@ void strbuf_expand(struct strbuf *sb, const char *format,
                        break;
                format = percent + 1;
 
-               for (p = placeholders; *p; p++) {
-                       if (!prefixcmp(format, *p))
-                               break;
-               }
-               if (*p) {
-                       fn(sb, *p, context);
-                       format += strlen(*p);
-               } else
+               consumed = fn(sb, format, context);
+               if (consumed)
+                       format += consumed;
+               else
                        strbuf_addch(sb, '%');
        }
 }