[纪秀峰]:bin2hex

受影响的文件: bin_to_hex/src/readme.org bin_to_hex/src/hello.erl bin_to_hex/src/bin_to_hex.erl bin_to_hex/rebar.config bin_to_hex/Makefile bin_to_hex/Emakefile
jixiuf · Nov 23, 2012 · 5a082a0 · 5a082a0
1 parent 56edeb5
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diff --git a/bin_to_hex/Emakefile b/bin_to_hex/Emakefile
@@ -0,0 +1,2 @@
+{ 'src/*', [debug_info, {i ,"include/"} , {i ,"deps/"} ,{outdir,"ebin/"}] }.
+{ 'test/*', [debug_info, {i ,"src/"}, {i ,"deps/"},{i ,"include/"}, {outdir,"ebin"} ] }.
diff --git a/bin_to_hex/Makefile b/bin_to_hex/Makefile
@@ -0,0 +1,42 @@
+PROJECT=bin_to_hex
+PREVIOUS_RELEASE_VERSION=0.1PREFIX:=../
+DEST:=$(PREFIX)$(PROJECT)
+REBAR=./rebar
+REBAR_UP=../rebar
+.PHONY:test
+
+compile:
+	@$(REBAR) get-deps compile
+	@-cp src/$(PROJECT).appup.src ebin/$(PROJECT).appup
+edoc:
+	@$(REBAR) doc
+test:
+	@rm -rf .eunit
+	@mkdir -p .eunit
+	@$(REBAR) skip_deps=true eunit
+clean:
+	@$(REBAR) clean
+build_plt:
+	@$(REBAR) build-plt
+dialyzer:
+	@$(REBAR) dialyze
+app:
+	@$(REBAR) create-app dest=$(DEST) appid=$(PROJECT)
+
+createnode:
+	@-mkdir rel
+	cd rel && $(REBAR_UP) create-node nodeid=$(PROJECT)
+create-node:createnode
+cn:createnode
+
+generate:
+	$(REBAR) generate
+gen:generate
+generatef:
+	$(REBAR) generate -f
+
+appup:
+	$(REBAR) generate-appups previous_release=$(PROJECT)-$(PREVIOUS_RELEASE_VERSION)
+upgrade:
+	$(REBAR) generate-upgrade previous_release=$(PROJECT)-$(PREVIOUS_RELEASE_VERSION)
+up:appup upgrade
diff --git a/bin_to_hex/rebar.config b/bin_to_hex/rebar.config
@@ -0,0 +1,8 @@
+%% -*- erlang -*-
+%% {erl_opts, [debug_info,{src_dirs, ['src/']}, nowarn_unused_vars, nowarn_unused_function,native,{hipe,[o3]}]}.
+{erl_opts, [debug_info]}.
+{sub_dirs, ["rel"]}.
+{lib_dirs,[".."]}.
+{deps, [  ]}.
+{cover_enabled, true}.
+{eunit_opts, [verbose, {report,{eunit_surefire,[{dir,"."}]}}]}.
diff --git a/bin_to_hex/src/bin_to_hex.erl b/bin_to_hex/src/bin_to_hex.erl
@@ -0,0 +1,76 @@
+%%%-------------------------------------------------------------------
+%%% @author 纪秀峰 <jixiuf@gmail.com>
+%%% @doc
+%%%
+%%% @end
+%%% Created : 2012-11-23 10:12 by 纪秀峰 <jixiuf@gmail.com>
+%%  Last Updated: 纪秀峰 2012-11-23 10:22:11 星期五
+%%%-------------------------------------------------------------------
+
+
+%% timer:tc(fun()->lists:foreach(fun(L)-> bin_to_hex:bin_to_hex(term_to_binary(atom)) end, lists:seq(0,1000000))end).
+-module(bin_to_hex).
+
+-compile([native, {hipe, [o3]}]).
+
+-export([bin_to_hex/1]).
+
+bin_to_hex(B) when is_binary(B) ->
+  bin_to_hex(B, <<>>).
+
+-define(H(X), (hex(X)):16).
+
+bin_to_hex(<<>>, Acc) -> Acc;
+bin_to_hex(Bin, Acc) when byte_size(Bin) band 7 =:= 0 ->
+  bin_to_hex_(Bin, Acc);
+bin_to_hex(<<X:8, Rest/binary>>, Acc) ->
+  bin_to_hex(Rest, <<Acc/binary, ?H(X)>>).
+
+bin_to_hex_(<<>>, Acc) -> Acc;
+bin_to_hex_(<<A:8, B:8, C:8, D:8, E:8, F:8, G:8, H:8, Rest/binary>>, Acc) ->
+  bin_to_hex_(
+    Rest,
+    <<Acc/binary,
+      ?H(A), ?H(B), ?H(C), ?H(D), ?H(E), ?H(F), ?H(G), ?H(H)>>).
+
+-compile({inline, [hex/1]}).
+
+hex(X) ->
+  element(
+    X+1, {16#3030, 16#3031, 16#3032, 16#3033, 16#3034, 16#3035, 16#3036,
+          16#3037, 16#3038, 16#3039, 16#3041, 16#3042, 16#3043, 16#3044,
+          16#3045, 16#3046, 16#3130, 16#3131, 16#3132, 16#3133, 16#3134,
+          16#3135, 16#3136, 16#3137, 16#3138, 16#3139, 16#3141, 16#3142,
+          16#3143, 16#3144, 16#3145, 16#3146, 16#3230, 16#3231, 16#3232,
+          16#3233, 16#3234, 16#3235, 16#3236, 16#3237, 16#3238, 16#3239,
+          16#3241, 16#3242, 16#3243, 16#3244, 16#3245, 16#3246, 16#3330,
+          16#3331, 16#3332, 16#3333, 16#3334, 16#3335, 16#3336, 16#3337,
+          16#3338, 16#3339, 16#3341, 16#3342, 16#3343, 16#3344, 16#3345,
+          16#3346, 16#3430, 16#3431, 16#3432, 16#3433, 16#3434, 16#3435,
+          16#3436, 16#3437, 16#3438, 16#3439, 16#3441, 16#3442, 16#3443,
+          16#3444, 16#3445, 16#3446, 16#3530, 16#3531, 16#3532, 16#3533,
+          16#3534, 16#3535, 16#3536, 16#3537, 16#3538, 16#3539, 16#3541,
+          16#3542, 16#3543, 16#3544, 16#3545, 16#3546, 16#3630, 16#3631,
+          16#3632, 16#3633, 16#3634, 16#3635, 16#3636, 16#3637, 16#3638,
+          16#3639, 16#3641, 16#3642, 16#3643, 16#3644, 16#3645, 16#3646,
+          16#3730, 16#3731, 16#3732, 16#3733, 16#3734, 16#3735, 16#3736,
+          16#3737, 16#3738, 16#3739, 16#3741, 16#3742, 16#3743, 16#3744,
+          16#3745, 16#3746, 16#3830, 16#3831, 16#3832, 16#3833, 16#3834,
+          16#3835, 16#3836, 16#3837, 16#3838, 16#3839, 16#3841, 16#3842,
+          16#3843, 16#3844, 16#3845, 16#3846, 16#3930, 16#3931, 16#3932,
+          16#3933, 16#3934, 16#3935, 16#3936, 16#3937, 16#3938, 16#3939,
+          16#3941, 16#3942, 16#3943, 16#3944, 16#3945, 16#3946, 16#4130,
+          16#4131, 16#4132, 16#4133, 16#4134, 16#4135, 16#4136, 16#4137,
+          16#4138, 16#4139, 16#4141, 16#4142, 16#4143, 16#4144, 16#4145,
+          16#4146, 16#4230, 16#4231, 16#4232, 16#4233, 16#4234, 16#4235,
+          16#4236, 16#4237, 16#4238, 16#4239, 16#4241, 16#4242, 16#4243,
+          16#4244, 16#4245, 16#4246, 16#4330, 16#4331, 16#4332, 16#4333,
+          16#4334, 16#4335, 16#4336, 16#4337, 16#4338, 16#4339, 16#4341,
+          16#4342, 16#4343, 16#4344, 16#4345, 16#4346, 16#4430, 16#4431,
+          16#4432, 16#4433, 16#4434, 16#4435, 16#4436, 16#4437, 16#4438,
+          16#4439, 16#4441, 16#4442, 16#4443, 16#4444, 16#4445, 16#4446,
+          16#4530, 16#4531, 16#4532, 16#4533, 16#4534, 16#4535, 16#4536,
+          16#4537, 16#4538, 16#4539, 16#4541, 16#4542, 16#4543, 16#4544,
+          16#4545, 16#4546, 16#4630, 16#4631, 16#4632, 16#4633, 16#4634,
+          16#4635, 16#4636, 16#4637, 16#4638, 16#4639, 16#4641, 16#4642,
+          16#4643, 16#4644, 16#4645, 16#4646}).
diff --git a/bin_to_hex/src/hello.erl b/bin_to_hex/src/hello.erl
@@ -0,0 +1,19 @@
+% Use: erlc hello.erl && erl -pa ./ebin -s hello run -s init stop -noshell
+
+-module(hello).
+-export([bin_to_hex/1]).
+
+bin_to_hex(Bin)->
+    bin_to_hex(Bin,[]).
+%% erlang:integer_to_list
+bin_to_hex(<<>>,Value)->
+    lists:reverse(Value);
+bin_to_hex(<<I:8,Bin/binary>>,Value)->
+    Hex=integer_to_list(I,16),
+    NewHex=case  length(Hex) of
+        1->
+            "0"++Hex;
+        _->
+            Hex
+        end,
+    bin_to_hex(Bin,[NewHex|Value]).
diff --git a/bin_to_hex/src/readme.org b/bin_to_hex/src/readme.org
@@ -0,0 +1,3 @@
+%% timer:tc(fun()->lists:foreach(fun(L)-> bin_to_hex:bin_to_hex(term_to_binary(atom)) end, lists:seq(0,1000000))end).
+%% timer:tc(fun()->lists:foreach(fun(L)-> hello:binary_to_hex(term_to_binary(atom)) end, lists:seq(0,1000000))end).
+结果显示 bin_to_hex模块里的方法 要快一些