e6317e72d — BusyBox

Subject

hexdump: add tests for %x, handle little/big endian properly

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Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

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testsuite/hexdump.tests +69 -22

testsuite/hexdump.tests+69 -22

@@ -5,6 +5,17 @@

	. ./testing.sh

+	input=\
+	"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"\
+	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"\
+	"\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"\
+	"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"\
+	"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+
+	little_endian=false
+	{ printf '\0\1' \| hexdump -d \| grep -q 256; } && little_endian=true
+	readonly little_endian
+
	# testing "description" "command" "result" "infile" "stdin"
	testing 'hexdump -C with four NULs' \
	'hexdump -C' \
@@ -43,12 +54,7 @@ testing "hexdump -e %3_u" \
	80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f
	f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff
	" \
-	"" \
-	"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"\
-	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"\
-	"\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"\
-	"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"\
-	"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"\
+	"" "$input"

	testing "hexdump -e /1 %d" \
	"hexdump -e '16/1 \" %4d\" \"\n\"'" \
@@ -59,33 +65,74 @@ testing "hexdump -e /1 %d" \
	-128 -127 -126 -125 -124 -123 -122 -121 -120 -119 -118 -117 -116 -115 -114 -113
	-16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1
	" \
-	"" \
-	"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"\
-	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"\
-	"\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"\
-	"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"\
-	"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"\
+	"" "$input"

-	testing "hexdump -e /2 %d" \
-	"hexdump -e '8/2 \" %6d\" \"\n\"'" \
-	"\
+	$little_endian \|\| SKIP=1
+	testing "hexdump -e /2 %d (little endian)" \
+	"hexdump -e '8/2 \" %6d\" \"\n\"'" \
+	"\
	256 770 1284 1798 2312 2826 3340 3854
	4368 4882 5396 5910 6424 6938 7452 7966
	29040 29554 30068 30582 31096 31610 32124 32638
	-32384 -31870 -31356 -30842 -30328 -29814 -29300 -28786
	-3600 -3086 -2572 -2058 -1544 -1030 -516 -2
	" \
-	"" \
-	"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"\
-	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"\
-	"\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"\
-	"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"\
-	"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"\
+	"" "$input"
+	SKIP=
+
+	$little_endian && SKIP=1
+	testing "hexdump -e /2 %d (big endian)" \
+	"hexdump -e '8/2 \" %6d\" \"\n\"'" \
+	"\
+	1 515 1029 1543 2057 2571 3085 3599
+	4113 4627 5141 5655 6169 6683 7197 7711
+	28785 29299 29813 30327 30841 31355 31869 32383
+	-32639 -32125 -31611 -31097 -30583 -30069 -29555 -29041
+	-3855 -3341 -2827 -2313 -1799 -1285 -771 -257
+	" \
+	"" "$input"
+	SKIP=

-	testing "hexdump -n4 -e '\"%u\"'" \
+	$little_endian \|\| SKIP=1
+	testing "hexdump -e /2 %x (little endian)" \
+	"hexdump -e '8/2 \" %6x\" \"\n\"'" \
+	"\
+	100 302 504 706 908 b0a d0c f0e
+	1110 1312 1514 1716 1918 1b1a 1d1c 1f1e
+	7170 7372 7574 7776 7978 7b7a 7d7c 7f7e
+	8180 8382 8584 8786 8988 8b8a 8d8c 8f8e
+	f1f0 f3f2 f5f4 f7f6 f9f8 fbfa fdfc fffe
+	" \
+	"" "$input"
+	SKIP=
+
+	$little_endian && SKIP=1
+	testing "hexdump -e /2 %x (big endian)" \
+	"hexdump -e '8/2 \" %6x\" \"\n\"'" \
+	"\
+	1 203 405 607 809 a0b c0d e0f
+	1011 1213 1415 1617 1819 1a1b 1c1d 1e1f
+	7071 7273 7475 7677 7879 7a7b 7c7d 7e7f
+	8081 8283 8485 8687 8889 8a8b 8c8d 8e8f
+	f0f1 f2f3 f4f5 f6f7 f8f9 fafb fcfd feff
+	" \
+	"" "$input"
+	SKIP=
+
+	$little_endian \|\| SKIP=1
+	testing "hexdump -n4 -e '\"%u\"' (little endian)" \
	"hexdump -n4 -e '\"%u\"'" \
	"12345678" \
	"" \
	"\x4e\x61\xbc\x00AAAA"
+	SKIP=
+
+	$little_endian && SKIP=1
+	testing "hexdump -n4 -e '\"%u\"' (big endian)" \
+	"hexdump -n4 -e '\"%u\"'" \
+	"1315027968" \
+	"" \
+	"\x4e\x61\xbc\x00AAAA"
+	SKIP=

	exit $FAILCOUNT