df: match coreutils behavior of wrapping lines if filesystem name is too long.

df: trim help text

2 files changed, 29 insertions, 29 deletions

diff --git a/coreutils/df.c b/coreutils/df.c
index f616398f4..fba59e791 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -23,19 +23,19 @@
 #include "libbb.h"
 
 #if !ENABLE_FEATURE_HUMAN_READABLE
-static long kscale(long b, long bs)
+static unsigned long kscale(unsigned long b, unsigned long bs)
 {
-	return ( b * (long long) bs + 1024/2 ) / 1024;
+	return (b * (unsigned long long) bs + 1024/2) / 1024;
 }
 #endif
 
 int df_main(int argc, char **argv);
 int df_main(int argc, char **argv)
 {
-	long blocks_used;
-	long blocks_percent_used;
-#if  ENABLE_FEATURE_HUMAN_READABLE
-	unsigned long df_disp_hr = 1024;
+	unsigned long blocks_used;
+	unsigned blocks_percent_used;
+#if ENABLE_FEATURE_HUMAN_READABLE
+	unsigned df_disp_hr = 1024;
 #endif
 	int status = EXIT_SUCCESS;
 	unsigned opt;
@@ -43,10 +43,9 @@ int df_main(int argc, char **argv)
 	struct mntent *mount_entry;
 	struct statfs s;
 	/* default display is kilobytes */
-	static const char hdr_1k[] ALIGN1 = "1k-blocks";
-	const char *disp_units_hdr = hdr_1k;
+	const char *disp_units_hdr = "1k-blocks";
 
-#if  ENABLE_FEATURE_HUMAN_READABLE
+#if ENABLE_FEATURE_HUMAN_READABLE
 	opt_complementary = "h-km:k-hm:m-hk";
 	opt = getopt32(argc, argv, "hmk");
 	if (opt & 1) {
@@ -73,7 +72,7 @@ int df_main(int argc, char **argv)
 		}
 	}
 
-	do {
+	while (1) {
 		const char *device;
 		const char *mount_point;
 
@@ -109,7 +108,7 @@ int df_main(int argc, char **argv)
 			blocks_used = s.f_blocks - s.f_bfree;
 			blocks_percent_used = 0;
 			if (blocks_used + s.f_bavail) {
-				blocks_percent_used = (((long long) blocks_used) * 100
+				blocks_percent_used = (blocks_used * 100ULL
 						+ (blocks_used + s.f_bavail)/2
 						) / (blocks_used + s.f_bavail);
 			}
@@ -125,28 +124,28 @@ int df_main(int argc, char **argv)
 				}
 			}
 
+			if (printf("\n%-20s" + 1, device) > 20)
+				    printf("\n%-20s", "");
 #if ENABLE_FEATURE_HUMAN_READABLE
-			printf("%-20s %9s ", device,
+			printf(" %9s ",
 				make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr));
 
-			printf("%9s ",
-				make_human_readable_str( (s.f_blocks - s.f_bfree),
+			printf(" %9s " + 1,
+				make_human_readable_str((s.f_blocks - s.f_bfree),
 						s.f_bsize, df_disp_hr));
 
-			printf("%9s %3ld%% %s\n",
-					  make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr),
-					  blocks_percent_used, mount_point);
+			printf("%9s %3u%% %s\n",
+					make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr),
+					blocks_percent_used, mount_point);
 #else
-			printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
-					  device,
-					  kscale(s.f_blocks, s.f_bsize),
-					  kscale(s.f_blocks-s.f_bfree, s.f_bsize),
-					  kscale(s.f_bavail, s.f_bsize),
-					  blocks_percent_used, mount_point);
+			printf(" %9lu %9lu %9lu %3u%% %s\n",
+					kscale(s.f_blocks, s.f_bsize),
+					kscale(s.f_blocks-s.f_bfree, s.f_bsize),
+					kscale(s.f_bavail, s.f_bsize),
+					blocks_percent_used, mount_point);
 #endif
 		}
-
-	} while (1);
+	}
 
 	fflush_stdout_and_exit(status);
 }
diff --git a/include/usage.h b/include/usage.h
index d5e9d7d5d..f5025b70a 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -607,12 +607,13 @@
        "[-" USE_FEATURE_HUMAN_READABLE("hm") "k] [FILESYSTEM ...]"
 #define df_full_usage \
        "Print the filesystem space used and space available" \
-       "\n\nOptions:\n" \
 	USE_FEATURE_HUMAN_READABLE( \
-       "\n	-h	Print sizes in human readable format (e.g., 1K 243M 2G )\n" \
-       "	-m	Print sizes in megabytes\n" \
-       "	-k	Print sizes in kilobytes(default)") \
+       "\n\nOptions control size display:" \
+       "\n	-h	Human readable (e.g. 1K 243M 2G)" \
+       "\n	-m	1024*1024 blocks" \
+       "\n	-k	1024 blocks") \
 	SKIP_FEATURE_HUMAN_READABLE( \
+       "\n\nOptions:" \
        "\n	-k	Ignored")
 #define df_example_usage \
        "$ df\n" \