1 files changed, 50 insertions, 0 deletions
diff --git a/src/libexecline/exlsn_define.c b/src/libexecline/exlsn_define.c
new file mode 100644
index 0000000..3abe516
--- /dev/null
+++ b/src/libexecline/exlsn_define.c
@@ -0,0 +1,50 @@
+/* ISC license. */
+
+#include <skalibs/bytestr.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/genalloc.h>
+#include <execline/execline.h>
+#include "exlsn.h"
+
+int exlsn_define (int argc, char const **argv, char const *const *envp, exlsn_t *info)
+{
+  eltransforminfo_t si = ELTRANSFORMINFO_ZERO ;
+  subgetopt_t localopt = SUBGETOPT_ZERO ;
+  elsubst_t blah ;
+  blah.var = info->vars.len ;
+  blah.value = info->values.len ;
+  for (;;)
+  {
+    register int opt = subgetopt_r(argc, argv, "nsCcd:", &localopt) ;
+    if (opt < 0) break ;
+    switch (opt)
+    {
+      case 'n' : si.chomp = 1 ; break ;
+      case 's' : si.split = 1 ; break ;
+      case 'C' : si.crunch = 1 ; break ;
+      case 'c' : si.crunch = 0 ; break ;
+      case 'd' : si.delim = localopt.arg ; break ;
+      default : return -3 ;
+    }
+  }
+  argc -= localopt.ind ; argv += localopt.ind ;
+ 
+  if (argc < 2) return -3 ;
+  if (!*argv[0] || el_vardupl(argv[0], info->vars.s, info->vars.len)) return -2 ;
+  if (!stralloc_catb(&info->vars, argv[0], str_len(argv[0]) + 1)) return -1 ;
+  if (!stralloc_cats(&info->values, argv[1])) goto err ;
+  {
+    register int r = el_transform(&info->values, blah.value, &si) ;
+    if (r < 0) goto err ;
+    blah.n = r ;
+  }
+  if (!genalloc_append(elsubst_t, &info->data, &blah)) goto err ;
+  (void)envp ;
+  return localopt.ind + 2 ;
+
+ err:
+  info->vars.len = blah.var ;
+  info->values.len = blah.value ;
+  return -1 ;
+}