Re: About the CLI of both grub-mkrescue versions

[Andrei Borzenkov <arvidjaar@gmail.com>]

В Wed, 01 Oct 2014 09:25:12 +0200
"Thomas Schmitt" <scdbackup@gmx.net> пишет:

> Hi,
> 
> to substantiate my proposal of renaming young grub-mkrescue.c to
> grub-mkiso.c and to add a built-in emulation of grub-mkrescue(.in),
> here the necessary code which i tested standalone with valgrind.

Well, below is much more simple patch which is reusing argp
infrastructure. The only problem - it needs small patch for gnulib
otherwise --help does not work. IMHO this is a bug in gnulib. If you
convince them to fix it ...

I do not say that I particular like it, but looks better than
reimplement parser from scratch.

---
 grub-core/gnulib/argp-parse.c |  7 +++++--
 util/grub-mkrescue.c          | 37 ++++++++++++++++++++++++++++---------
 2 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/grub-core/gnulib/argp-parse.c b/grub-core/gnulib/argp-parse.c
index 67ea32c..8fb50e1 100644
--- a/grub-core/gnulib/argp-parse.c
+++ b/grub-core/gnulib/argp-parse.c
@@ -89,13 +89,16 @@ static const struct argp_option argp_default_options[] =
 static error_t
 argp_default_parser (int key, char *arg, struct argp_state *state)
 {
+  struct argp_state help_state = *state;
+
+  help_state.flags &= ~ARGP_NO_ERRS;
   switch (key)
     {
     case '?':
-      __argp_state_help (state, state->out_stream, ARGP_HELP_STD_HELP);
+      __argp_state_help (&help_state, state->out_stream, ARGP_HELP_STD_HELP);
       break;
     case OPT_USAGE:
-      __argp_state_help (state, state->out_stream,
+      __argp_state_help (&help_state, state->out_stream,
                          ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
       break;
 
diff --git a/util/grub-mkrescue.c b/util/grub-mkrescue.c
index e719839..8decb4e 100644
--- a/util/grub-mkrescue.c
+++ b/util/grub-mkrescue.c
@@ -70,6 +70,19 @@ xorriso_push (const char *val)
 }
 
 static void
+xorriso_push_tail (const char *val)
+{
+  if (xorriso_tail_arg_alloc <= xorriso_tail_argc)
+    {
+      xorriso_tail_arg_alloc = 2 * (4 + xorriso_tail_argc);
+      xorriso_tail_argv = xrealloc (xorriso_tail_argv,
+			       sizeof (xorriso_tail_argv[0])
+			       * xorriso_tail_arg_alloc);
+    }
+  xorriso_tail_argv[xorriso_tail_argc++] = xstrdup (val);
+}
+
+static void
 xorriso_link (const char *from, const char *to)
 {
   char *tof = grub_util_path_concat (2, iso9660_dir, to);
@@ -156,6 +169,12 @@ enum {
 static error_t 
 argp_parser (int key, char *arg, struct argp_state *state)
 {
+  if (state->quoted && !(int *)state->input)
+    {
+      *(int *)state->input = 1;
+      xorriso_push_tail ("--");
+    }
+
   if (grub_install_parse (key, arg))
     return 0;
   switch (key)
@@ -216,14 +235,7 @@ argp_parser (int key, char *arg, struct argp_state *state)
       return 0;
 
     case ARGP_KEY_ARG:
-      if (xorriso_tail_arg_alloc <= xorriso_tail_argc)
-	{
-	  xorriso_tail_arg_alloc = 2 * (4 + xorriso_tail_argc);
-	  xorriso_tail_argv = xrealloc (xorriso_tail_argv,
-				   sizeof (xorriso_tail_argv[0])
-				   * xorriso_tail_arg_alloc);
-	}
-      xorriso_tail_argv[xorriso_tail_argc++] = xstrdup (arg);
+      xorriso_push_tail (arg);
       return 0;
     default:
       return ARGP_ERR_UNKNOWN;
@@ -380,6 +392,8 @@ main (int argc, char *argv[])
   char *romdir;
   char *sysarea_img = NULL;
   const char *pkgdatadir;
+  int quote_seen = 0;
+  int unknown;
 
   grub_util_host_init (&argc, &argv);
   grub_util_disable_fd_syncs ();
@@ -391,7 +405,12 @@ main (int argc, char *argv[])
   xorriso = xstrdup ("xorriso");
   label_font = grub_util_path_concat (2, pkgdatadir, "unicode.pf2");
 
-  argp_parse (&argp, argc, argv, 0, 0, 0);
+  while (argc > 0 && argp_parse (&argp, argc, argv, ARGP_NO_ERRS, &unknown, &quote_seen))
+    {
+      xorriso_push_tail (argv[unknown]);
+      argv += unknown;
+      argc -= unknown;
+    }
 
   if (!output_image)
     grub_util_error ("%s", _("output file must be specified"));
-- 
tg: (77063f4..) u/grub-mkrescue-options (depends on: master)