vlib: process startup config exec scripts line by line

[vpp.git] / src / vlib / cli.c

diff --git a/src/vlib/cli.c b/src/vlib/cli.c
index 01409b8..80da2d5 100644 (file)
--- a/src/vlib/cli.c
+++ b/src/vlib/cli.c
@@ -199,6 +199,64 @@ unformat_vlib_cli_args (unformat_input_t *i, va_list *va)
   return 1;
 }
 
+uword
+unformat_vlib_cli_line (unformat_input_t *i, va_list *va)
+{
+  unformat_input_t *result = va_arg (*va, unformat_input_t *);
+  u8 *line = 0;
+  uword c;
+  int skip;
+
+next_line:
+  skip = 0;
+
+  /* skip leading whitespace if any */
+  unformat_skip_white_space (i);
+
+  if (unformat_is_eof (i))
+    return 0;
+
+  while ((c = unformat_get_input (i)) != UNFORMAT_END_OF_INPUT)
+    {
+      if (c == '\\')
+       {
+         c = unformat_get_input (i);
+
+         if (c == '\n')
+           {
+             if (!skip)
+               vec_add1 (line, '\n');
+             skip = 0;
+             continue;
+           }
+
+         if (!skip)
+           vec_add1 (line, '\\');
+
+         if (c == UNFORMAT_END_OF_INPUT)
+           break;
+
+         if (!skip)
+           vec_add1 (line, c);
+         continue;
+       }
+
+      if (c == '#')
+       skip = 1;
+      else if (c == '\n')
+       break;
+
+      if (!skip)
+       vec_add1 (line, c);
+    }
+
+  if (line == 0)
+    goto next_line;
+
+  unformat_init_vector (result, line);
+  return 1;
+}
+
 /* Looks for string based sub-input formatted { SUB-INPUT }. */
 uword
 unformat_vlib_cli_sub_input (unformat_input_t * i, va_list * args)