X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=inline;f=lib%2Fmempool-str.c;h=176ff3e21e046169c1420ae8402910694544b9f9;hb=669b67c13dac4d59bd771a8dc908e2dcfe114845;hp=360a3b950362e7f2e83f90a23875363f89fe55ea;hpb=4653232432f5725243c08bc2e720c80a5412d405;p=libucw.git

diff --git a/lib/mempool-str.c b/lib/mempool-str.c
index 360a3b95..176ff3e2 100644
--- a/lib/mempool-str.c
+++ b/lib/mempool-str.c
@@ -14,7 +14,7 @@
 #include <string.h>
 
 char *
-mp_strdup(struct mempool *p, char *s)
+mp_strdup(struct mempool *p, const char *s)
 {
   uns l = strlen(s) + 1;
   char *t = mp_alloc_fast_noalign(p, l);
@@ -22,6 +22,14 @@ mp_strdup(struct mempool *p, char *s)
   return t;
 }
 
+void *
+mp_memdup(struct mempool *p, const void *s, uns len)
+{
+  void *t = mp_alloc_fast(p, len);
+  memcpy(t, s, len);
+  return t;
+}
+
 char *
 mp_multicat(struct mempool *p, ...)
 {
@@ -53,6 +61,28 @@ mp_multicat(struct mempool *p, ...)
   return buf;
 }
 
+char *
+mp_strjoin(struct mempool *p, char **a, uns n, uns sep)
+{
+  uns sizes[n];
+  uns len = 1;
+  for (uns i=0; i<n; i++)
+    len += sizes[i] = strlen(a[i]);
+  if (sep && n)
+    len += n-1;
+  char *dest = mp_alloc_fast_noalign(p, len);
+  char *d = dest;
+  for (uns i=0; i<n; i++)
+    {
+      if (sep && i)
+	*d++ = sep;
+      memcpy(d, a[i], sizes[i]);
+      d += sizes[i];
+    }
+  *d = 0;
+  return dest;
+}
+
 #ifdef TEST
 
 #include <stdio.h>
@@ -63,6 +93,9 @@ int main(void)
   char *s = mp_strdup(p, "12345");
   char *c = mp_multicat(p, "<<", s, ">>", NULL);
   puts(c);
+  char *a[] = { "bugs", "gnats", "insects" };
+  puts(mp_strjoin(p, a, 3, '.'));
+  puts(mp_strjoin(p, a, 3, 0));
   return 0;
 }