pool: New function pool_strdup0.

This function is the pool analogue of xmemdup0, except that it is only
appropriate for use with strings.

diff --git a/src/libpspp/pool.c b/src/libpspp/pool.c
index 88d3535df140e6648f025de4076be66bc466ce06..dbdd71b6cbbf250fbb91248e6c8cc820da13e4f0 100644 (file)
--- a/src/libpspp/pool.c
+++ b/src/libpspp/pool.c
@@ -364,6 +364,19 @@ pool_strdup (struct pool *pool, const char *string)
   return pool_clone_unaligned (pool, string, strlen (string) + 1);
 }
 
+/* Duplicates the SIZE bytes of STRING, plus a trailing 0 byte,
+   and returns a pointer to the duplicate.  For use only with
+   strings, because the returned pointere may not be aligned
+   properly for other types. */
+char *
+pool_strdup0 (struct pool *pool, const char *string, size_t size)
+{
+  char *new_string = pool_alloc_unaligned (pool, size + 1);
+  memcpy (new_string, string, size);
+  new_string[size] = '\0';
+  return new_string;
+}
+
 /* Formats FORMAT with the given ARGS in memory allocated from
    POOL and returns the formatted string. */
 char *

diff --git a/src/libpspp/pool.h b/src/libpspp/pool.h
index e6c885e48b3686583d76ecd1413b810ed5fa48ae..fc24b2f9e6ff0ae38221a2ac7f9d3bba60aa8fbf 100644 (file)
--- a/src/libpspp/pool.h
+++ b/src/libpspp/pool.h
@@ -62,6 +62,7 @@ void *pool_clone (struct pool *, const void *, size_t) MALLOC_LIKE;
 void *pool_alloc_unaligned (struct pool *, size_t) MALLOC_LIKE;
 void *pool_clone_unaligned (struct pool *, const void *, size_t) MALLOC_LIKE;
 char *pool_strdup (struct pool *, const char *) MALLOC_LIKE;
+char *pool_strdup0 (struct pool *, const char *, size_t) MALLOC_LIKE;
 char *pool_vasprintf (struct pool *, const char *, va_list)
      MALLOC_LIKE PRINTF_FORMAT (2, 0);
 char *pool_asprintf (struct pool *, const char *, ...)