Blame SOURCES/0042-util-grub-install.c-List-available-targets.patch

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From 535107794dc13438bd2cd0c298667a0eb430c839 Mon Sep 17 00:00:00 2001
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From: Vladimir Serbinenko <phcoder@gmail.com>
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Date: Fri, 24 Jan 2014 18:09:25 +0100
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Subject: [PATCH 042/260] * util/grub-install.c: List available targets.
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---
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 ChangeLog                   |  4 ++++
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 include/grub/util/install.h |  2 ++
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 util/grub-install-common.c  | 30 ++++++++++++++++++++++++++++++
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 util/grub-install.c         | 10 ++++++++--
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 4 files changed, 44 insertions(+), 2 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index eee8e78a7..20e8baaa2 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,7 @@
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+2014-01-24  Vladimir Serbinenko  <phcoder@gmail.com>
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+
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+	* util/grub-install.c: List available targets.
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+
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 2014-01-23  Colin Watson  <cjwatson@ubuntu.com>
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 	* util/grub-install.c (write_to_disk): Add an info message.
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diff --git a/include/grub/util/install.h b/include/grub/util/install.h
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index bc987aadc..aedcd29f9 100644
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--- a/include/grub/util/install.h
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+++ b/include/grub/util/install.h
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@@ -138,6 +138,8 @@ grub_install_get_platform_cpu (enum grub_install_plat platid);
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 const char *
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 grub_install_get_platform_platform (enum grub_install_plat platid);
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+char *
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+grub_install_get_platforms_string (void);
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 typedef enum {
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   GRUB_COMPRESSION_AUTO,
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diff --git a/util/grub-install-common.c b/util/grub-install-common.c
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index 6ea0a8e17..c8bedcb2e 100644
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--- a/util/grub-install-common.c
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+++ b/util/grub-install-common.c
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@@ -668,6 +668,36 @@ static struct
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   }; 
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 char *
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+grub_install_get_platforms_string (void)
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+{
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+  char **arr = xmalloc (sizeof (char *) * ARRAY_SIZE (platforms));
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+  int platform_strins_len = 0;
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+  char *platforms_string;
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+  char *ptr;
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+  unsigned i;
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+  for (i = 0; i < ARRAY_SIZE (platforms); i++)
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+    {
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+      arr[i] = xasprintf ("%s-%s", platforms[i].cpu,
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+			  platforms[i].platform);
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+      platform_strins_len += strlen (arr[i]) + 2;
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+    }
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+  ptr = platforms_string = xmalloc (platform_strins_len);
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+  qsort (arr, ARRAY_SIZE (platforms), sizeof (char *), grub_qsort_strcmp);
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+  for (i = 0; i < ARRAY_SIZE (platforms); i++)
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+    {
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+      strcpy (ptr, arr[i]);
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+      ptr += strlen (arr[i]);
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+      *ptr++ = ',';
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+      *ptr++ = ' ';
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+      free (arr[i]);
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+    }
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+  ptr[-2] = 0;
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+  free (arr);
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+ 
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+  return platforms_string;
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+}
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+
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+char *
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 grub_install_get_platform_name (enum grub_install_plat platid)
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 {
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   return xasprintf ("%s-%s", platforms[platid].cpu,
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diff --git a/util/grub-install.c b/util/grub-install.c
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index 787dc90fc..2e6226a37 100644
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--- a/util/grub-install.c
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+++ b/util/grub-install.c
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@@ -256,7 +256,7 @@ static struct argp_option options[] = {
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    OPTION_HIDDEN, 0, 2},
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   {"target", OPTION_TARGET, N_("TARGET"),
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    /* TRANSLATORS: "TARGET" as in "target platform".  */
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-   0, N_("install GRUB for TARGET platform [default=%s]"), 2},
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+   0, N_("install GRUB for TARGET platform [default=%s]; available targets: %s"), 2},
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   {"grub-setup", OPTION_SETUP, "FILE", OPTION_HIDDEN, 0, 2},
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   {"grub-mkrelpath", OPTION_MKRELPATH, "FILE", OPTION_HIDDEN, 0, 2},
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   {"grub-mkdevicemap", OPTION_MKDEVICEMAP, "FILE", OPTION_HIDDEN, 0, 2},
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@@ -340,7 +340,13 @@ help_filter (int key, const char *text, void *input __attribute__ ((unused)))
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     case OPTION_BOOT_DIRECTORY:
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       return xasprintf (text, GRUB_DIR_NAME, GRUB_BOOT_DIR_NAME "/" GRUB_DIR_NAME);
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     case OPTION_TARGET:
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-      return xasprintf (text, get_default_platform ());
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+      {
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+	char *plats = grub_install_get_platforms_string ();
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+	char *ret;
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+	ret = xasprintf (text, get_default_platform (), plats);
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+	free (plats);
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+	return ret;
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+      }
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     case ARGP_KEY_HELP_POST_DOC:
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       return xasprintf (text, program_name, GRUB_BOOT_DIR_NAME "/" GRUB_DIR_NAME);
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     default:
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-- 
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2.13.0
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