Split tools unto parts for fixing run_tests to link req'd deps.

[ccan] / tools / split.c

diff --git a/tools/split.c b/tools/split.c
new file mode 100644 (file)
index 0000000..f5d016a
--- /dev/null
+++ b/tools/split.c
@@ -0,0 +1,29 @@
+#include "tools.h"
+#include "talloc/talloc.h"
+#include <string.h>
+
+/* This is a dumb one which copies.  We could mangle instead. */
+char **split(const void *ctx, const char *text, const char *delims,
+            unsigned int *nump)
+{
+       char **lines = NULL;
+       unsigned int max = 64, num = 0;
+
+       lines = talloc_array(ctx, char *, max+1);
+
+       while (*text != '\0') {
+               unsigned int len = strcspn(text, delims);
+               lines[num] = talloc_array(lines, char, len + 1);
+               memcpy(lines[num], text, len);
+               lines[num][len] = '\0';
+               text += len;
+               text += strspn(text, delims);
+               if (++num == max)
+                       lines = talloc_realloc(ctx, lines, char *, max*=2 + 1);
+       }
+       lines[num] = NULL;
+       if (nump)
+               *nump = num;
+       return lines;
+}
+