Remove requirement that include/applets.h must be sorted

First, I _again_ violated it - two xz-related applets are in wrong positions.
Second, planned in-applet help text thing will be so much easier without
this requirement...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 27 insertions, 6 deletions

diff --git a/applets/usage.c b/applets/usage.c
index d4fd12f..46adbf4 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -5,9 +5,9 @@
  * Licensed under GPLv2, see file LICENSE in this tarball for details.
  */
 #include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 
-/* Just #include "autoconf.h" doesn't work for builds in separate
- * object directory */
 #include "autoconf.h"
 
 /* Since we can't use platform.h, have to do this again by hand: */
@@ -21,14 +21,35 @@
 # define USE_FOR_MMU(...) __VA_ARGS__
 #endif
 
-static const char usage_messages[] = ""
-#define MAKE_USAGE
 #include "usage.h"
+#define MAKE_USAGE(aname, usage) { aname, usage },
+static struct usage_data {
+	const char *aname;
+	const char *usage;
+} usage_array[] = {
 #include "applets.h"
-;
+};
+
+static int compare_func(const void *a, const void *b)
+{
+	const struct usage_data *ua = a;
+	const struct usage_data *ub = b;
+	return strcmp(ua->aname, ub->aname);
+}
 
 int main(void)
 {
-	write(STDOUT_FILENO, usage_messages, sizeof(usage_messages));
+	int i;
+	int num_messages = sizeof(usage_array) / sizeof(usage_array[0]);
+
+	if (num_messages == 0)
+		return 0;
+
+	qsort(usage_array,
+		num_messages, sizeof(usage_array[0]),
+		compare_func);
+	for (i = 0; i < num_messages; i++)
+		write(STDOUT_FILENO, usage_array[i].usage, strlen(usage_array[i].usage) + 1);
+
 	return 0;
 }