Add touch, filecopy_unsafe, filecopy_suffix

1 files changed, 25 insertions, 0 deletions

diff --git a/src/libstddjb/filecopy_suffix.c b/src/libstddjb/filecopy_suffix.c
new file mode 100644
index 0000000..70673ea
--- /dev/null
+++ b/src/libstddjb/filecopy_suffix.c
@@ -0,0 +1,25 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/djbunix.h>
+
+int filecopy_suffix (char const *src, char const *dst, unsigned int mode, char const *suffix)
+{
+  unsigned int dstlen = str_len(dst) ;
+  unsigned int suffixlen = str_len(suffix) ;
+  char tmp[dstlen + suffixlen + 1] ;
+  byte_copy(tmp, dstlen, dst) ;
+  byte_copy(tmp + dstlen, suffixlen + 1, suffix) ;
+  if (!filecopy_unsafe(src, tmp, mode)) return 0 ;	
+  if (rename(tmp, dst) < 0)
+  {
+    register int e = errno ;
+    unlink(tmp) ;
+    errno = e ;
+    return 0 ;
+  }
+  return 1 ;
+}