From bea0037dbdd979603fb0b5be8b43f5478c1f6fec Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Fri, 19 Sep 2014 02:53:32 +0000
Subject: initial commit

---
 src/skaembutils/s6-linkname.c | 45 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/skaembutils/s6-linkname.c

(limited to 'src/skaembutils/s6-linkname.c')

diff --git a/src/skaembutils/s6-linkname.c b/src/skaembutils/s6-linkname.c
new file mode 100644
index 0000000..a9425a1
--- /dev/null
+++ b/src/skaembutils/s6-linkname.c
@@ -0,0 +1,45 @@
+/* ISC license. */
+
+#include <skalibs/bytestr.h>
+#include <skalibs/buffer.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/djbunix.h>
+
+#define USAGE "s6-linkname [ -n ] [ -f ] link"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  stralloc sa = STRALLOC_ZERO ;
+  int path = 0, nl = 1 ;
+  PROG = "s6-linkname" ;
+  {
+    subgetopt_t l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      register int opt = subgetopt_r(argc, argv, "nf", &l) ;
+      if (opt == -1) break ;
+      switch(opt)
+      {
+        case 'n' : nl = 0 ; break ;
+        case 'f' : path = 1 ; break ;
+        default :  dieusage() ;
+      }
+    }
+    argv += l.ind ; argc -= l.ind ;
+  }
+  if (!argc) dieusage() ;
+
+  if ((path ? sarealpath(&sa, *argv) : sareadlink(&sa, *argv)) < 0)
+    strerr_diefu2sys(111, "resolve ", *argv) ;
+
+  if ((buffer_put(buffer_1small, sa.s, sa.len) < 0)
+   || (nl && (buffer_put(buffer_1small, "\n", 1)) < 0)
+   || (!buffer_flush(buffer_1small)))
+    strerr_diefu1sys(111, "write to stdout") ;
+
+ /* stralloc_free(&sa) ; */
+  return 0 ;
+}
-- 
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