jinheking
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最新评论
-
peikona：
从文件系统中加载python模块。另外setup中使用zipf ...
py2exe越来越爽了 -
davidsun2008：
[size=large][size=medium]大家好，py ...
py2exe越来越爽了 -
jinheking：
我会尝试着把模式详尽剖析。不过能力有限，望大家多提宝贵意见。
DLang策略模式 -
DavidL：
不错的理念，赞一个。
能详尽剖析就更好了
DLang策略模式 -
shawind：
可以像很多D项目一样,自己写一个all.d,在这里面impor ...
DLang策略模式
我临摹的一个 hello world。
大家看了以后不要说我无聊，临摹的是：
http://packages.debian.org/unstable/devel/hello
getopt.d
hello.d
dmd hello.d getopt.d -D
大家看了以后不要说我无聊，临摹的是：
http://packages.debian.org/unstable/devel/hello
getopt.d
/**
* Copyright (c) 2004
* Juanjo Alvarez Martinez <juanjux@yahoo.es>
* Copyright (c) 2007 only Version:0.5
* jinheking <jinheking@gmail.com>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Author makes no representations about
* the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*/
/* Based (copied of) on the Python language getopt implementation. It implements
* a POSIX-alike getopt, that is, it stops parsing the options as soon as it
* find a non-option argument, and removes the options it parses from args[][] so the
* application is left with all the nonoption arguments in args. If you don't want to use
* short options or long options just change the argument for "null".
*
* Version: 0.5
*
* Changes:
*
* 0.1 Initial release
* 0.2 Lot's of bugfixing, "posixification" and improvements thanks to Jonathan Leffler
* 0.3 More posix'ation (handling of ':' at start of shortargs meaning "don't handle
* missing argument errors").
* 0.4 A fix and using writef/writefln instead of printf for the debug and the tests
* 0.5 A fix and using dmd 1.014. Fixed by jinheking [jinheking@gmail.com]
*/
/++++++++++++++++++++++++
+ Our function.
+ Example:
+
+ ------------------------------------------------------
+ import getopt;
+ import std.stdio;
+ void main(char[][] args) {
+ args = args[1..args.length];
+ getopt_t[] usedoptions;
+
+ char[] shortoptions = "hvtn?";
+ char[][5] longoptions;
+ int iLen=0;
+ int idxop = -1;
+ longoptions[][++idxop] = "help";
+ longoptions[][++idxop] = "version";
+ longoptions[][++idxop] = "traditional";
+ longoptions[][++idxop] = "next-generation";
+
+ try
+ {
+ GetOpt getopt =new GetOpt();
+ usedoptions=getopt.getopt(args, shortoptions, longoptions);
+ } catch(GetOptException e){
+ writefln("Error in passed options: ", e.msg);
+ return 1;
+ }
+ foreach(getopt_t item; usedoptions){
+
+ if (item.option == "-h" || item.option == "--help" || item.option == "-?")
+ {
+ writefln("``Hello World!'' is a greeting program which wrote by jinheking.\n",
+ "\n",
+
+ "Usage: hello [OPTIONS]\n",
+ " -h, --help display this message then exit.\n",
+ " -?, display this message then exit.\n",
+ " -v, --version display version information then exit.\n",
+ "\n",
+ " -t, --traditional output a greeting message with traditional format.\n",
+ " -n, --next-generation output a greeting message with next-generation format.\n",
+ "\n",
+ "Report bugs to <jinheking@gmail.com>\n");
+ }
+ else if (item.option == "-v" || item.option == "--version"){
+ char[] output = item.value;
+ writefln("Hello World - jinheking's hello world. 0.01 version\n");
+ }
+ else if (item.option == "-t" || item.option == "--traditional"){
+ char[] output = item.value;
+ writefln("Hello, World\n");
+ }
+ else if (item.option == "-n" || item.option == "--next-generation"){
+ char[] output = item.value;
+ writefln("+---------------+\n",
+ "| Hello, world! |\n",
+ "+---------------+\n");
+ }
+ iLen++;
+ }
+ if(iLen==0){
+ writefln("Mr. Watson. Come Here. I need you.");
+ }
+}
+ -------------------------------------------------------------------------
+/
//TODO: GNU getopt, object oriented interface
module getopt;
private import std.string;
private import std.array;
private import std.stdio;
enum GetOptError
{
NoOption = 1,
ArgRequired,
ArgNotRequired
}
class GetOptException : Exception
{
public GetOptError errtype;
char[] option;
this(char[] msg, GetOptError errtype, char[] option)
{
this.errtype = errtype;
this.option = option;
super(msg);
}
}
struct getopt_t
{
char[] option;
char[] value;
}
class GetOpt{
/*this(inout char[][] args, char[] shortopts, char[][] longopts){
getopt(args,shortopts,longopts);
}*/
getopt_t[] getopt(inout char[][] args, char[] shortopts, char[][] longopts)
{
char[] currentarg;
getopt_t save;
getopt_t[] retlist;
int retlistsize = 0;
bool handleerrors = 1;
if (shortopts.length > 0)
if (shortopts[0] == ':')
// Let the app handle the missing argument errors
handleerrors = 0;
if (longopts.length > 0)
if (longopts[0] == "=")
handleerrors = 0;
while (args.length > 0 && args[0][0] == '-' && args[0] != "-")
{
if (args[0] == null)
{
args = args[1..args.length];
continue;
}
if (args[0] == "--")
{
args = args[1..args.length];
break;
}
currentarg = args[0];
args = args[1..args.length];
if (currentarg[0..2] == "--")
{
currentarg = currentarg[2..currentarg.length];
save = do_longs(longopts, currentarg, args, handleerrors);
retlist.length = ++retlistsize;
retlist[retlistsize - 1].option = save.option;
retlist[retlistsize - 1].value = save.value;
debug(getopt)
{
writefln("LongOpt: ", save.option);
writefln("Value: ", save.value == "" ? "No value" : save.value);
}
}
else
{
currentarg = currentarg[1..currentarg.length];
getopt_t[] savelist;
savelist = do_shorts(shortopts, currentarg, args, handleerrors);
foreach(getopt_t it; savelist) {
retlist.length = ++retlistsize;
retlist[retlistsize - 1].option = it.option;
retlist[retlistsize - 1].value = it.value;
debug(getopt)
{
writefln("ShortOpt: ", it.option);
writefln("Value: ", it.value);
writefln();
}
}
}
}
return retlist;
}
getopt_t do_longs(char[][] longopts, char[]str, inout char[][]args, bool handleerrors)
{
getopt_t ret;
char[] optarg, errormsg;
int i = find(str, '=');
if(i != -1)
{
// Take the argument and strip the argument part from the option
optarg = str[i+1..str.length];
str = str[0..i];
}
if(long_has_args(str, longopts))
{
if(optarg.length == 0) //No "=", so it's an option after an space
{
if(args.length == 0)
{
if(handleerrors)
{
errormsg = std.string.format("option --", str, " requires argument");
throw new GetOptException(errormsg, GetOptError.ArgRequired, str);
}
else optarg = "";
}
else
{
if(find(args[0], '-') == 0)
{
if(handleerrors)
{
errormsg = std.string.format("option --",str," requires argument");
throw new GetOptException(errormsg, GetOptError.ArgRequired, str);
}
else
optarg = "";
}
else
{
optarg = args[0];
args = args[1..args.length];
}
}
}
}
else if(optarg.length > 0 && handleerrors)
{
errormsg = std.string.format("option --",str," must not have an argument (\"",optarg,"\" supplied)");
throw new GetOptException(errormsg, GetOptError.ArgNotRequired, str);
}
ret.option = "--"~str;
ret.value = optarg.length > 0 ? optarg : "";
return ret;
}
bool long_has_args(char[]option, char[][]longoptions)
{
int pos;
bool hasopt;
char[] origoption;
foreach(char[] currentarg; longoptions)
{
if(currentarg == null)continue;
hasopt = 0;
if( (pos = find(currentarg, '=')) != -1 )
{
origoption = currentarg[0..currentarg.length-1];
hasopt = 1;
}
else
{
origoption = currentarg;
hasopt = 0;
}
if(option != origoption)
continue;
else
return hasopt;
}
char[] errormsg = std.string.format("option --",option," not recognized");
throw new GetOptException(errormsg, GetOptError.NoOption, option);
}
getopt_t[] do_shorts(char[] shortopts, char[]str, inout char[][]args, bool handleerrors)
{
getopt_t ret;
getopt_t[] retlist;
int retlistsize = 0;
char[] optarg, errormsg;
char opt;
while(str.length > 0)
{
opt = str[0];
str = str[1..str.length];
if(short_has_args(opt,shortopts))
{
if(str.length == 0)
{
if(args.length == 0)
{
if(handleerrors)
{
errormsg = std.string.format("option -",opt," requires argument");
throw new GetOptException(errormsg, GetOptError.ArgRequired, str);
}
else optarg = "";
}
else
{
if(find(args[0], '-') == 0)
{
if(handleerrors)
{
errormsg = std.string.format("option -",opt," requires argument");
throw new GetOptException(errormsg, GetOptError.ArgRequired, str);
}
else
{
optarg = "";
}
}
else
{
optarg = args[0];
args = args[1..args.length];
}
}
}
else
{
optarg = str;
str = "";
}
}
else
{
optarg = "";
}
retlist.length = ++retlistsize;
ret.option = std.string.format("-", opt);
ret.value = optarg.length > 0 ? optarg : "";
retlist[retlistsize - 1] = ret;
}
return retlist;
}
bool short_has_args(char option, char[]shortoptions)
{
//for(int i=0;i<shortoptions.length;i++)
foreach(int i, char c; shortoptions)
{
if(option == c)
{
try
{
if(shortoptions[i+1] == ':')
return 1;
else
return 0;
} catch(ArrayBoundsError) {
return 0;
}
}
}
char[] stroption = std.string.format(option);
char[] errormsg = std.string.format("option -",stroption," not recognized");
throw new GetOptException(errormsg, GetOptError.NoOption, stroption);
}
}
unittest
{
int idx = -1;
int idx2 = -1;
debug(getopt) writefln("getopt.getopt.unittest");
char[][] longoptions;
longoptions.length = 5;
longoptions[++idx2] = "test1";
longoptions[++idx2] = "test2=";
longoptions[++idx2] = "test10";
longoptions[++idx2] = "test20=";
longoptions[++idx2] = "test30";
char[] shortoptions = "ab:c:d";
char[][] args;
args.length = 10;
args[++idx] = "--test1";
args[++idx] = "-a";
args[++idx] = "--test2";
args[++idx] = "param2";
args[++idx] = "-bparamb";
args[++idx] = "--test10";
args[++idx] = "--test20=param20";
args[++idx] = "-adc";
args[++idx] = "paramc";
args[++idx] = "nonoptionargument";
debug(getopt)
writefln("Args: --test1 -a --test2 param2 -bparamb --test10 --test20=param20 -adc paramc nonoptionargument");
getopt_t[] usedoptions;
usedoptions = getopt(args, shortoptions, longoptions);
bool hastest1, hasa, hastest2, hastest2param, hasb, hasbparam, hastest10;
bool hastest20, hastest20param, hasc, hascparam, hasnooption;
foreach(getopt_t item; usedoptions)
{
if (item.option == "--test1")
hastest1 = 1;
else if (item.option == "-a")
hasa = 1;
else if (item.option == "--test2") {
hastest2 = 1;
if (item.value == "param2")
hastest2param = 1;
}
else if (item.option == "-b") {
hasb = 1;
if (item.value == "paramb")
hasbparam = 1;
}
else if (item.option == "--test10")
hastest10 = 1;
else if (item.option == "--test20") {
hastest20 = 1;
if (item.value == "param20")
hastest20param = 1;
}
else if (item.option == "-c") {
hasc = 1;
if (item.value == "paramc")
hascparam = 1;
}
}
assert(hastest1);
assert(hasa);
assert(hastest2);
assert(hastest2param);
assert(hasb);
assert(hasbparam);
assert(hastest10);
assert(hastest20);
assert(hastest20param);
assert(hasc);
assert(hascparam);
assert(args[0] == "nonoptionargument");
debug(getopt) writefln("getopt.unittest passed ok");
}
hello.d
import getopt;
import std.stdio;
void main(char[][] args) {
args = args[1..args.length];
getopt_t[] usedoptions;
/*foreach(char[] argv;args)
{
writefln("File: ", argv);
}
*/
char[] shortoptions = "hvtn?";
char[][5] longoptions;
int iLen=0;
int idxop = -1;
longoptions[][++idxop] = "help";
longoptions[][++idxop] = "version";
longoptions[][++idxop] = "traditional";
longoptions[][++idxop] = "next-generation";
try
{
GetOpt getopt =new GetOpt();
usedoptions=getopt.getopt(args, shortoptions, longoptions);
} catch(GetOptException e)
{
writefln("Error in passed options: ", e.msg);
return 1;
}
foreach(getopt_t item; usedoptions){
if (item.option == "-h" || item.option == "--help" || item.option == "-?")
{
writefln("``Hello World!'' is a greeting program which wrote by jinheking.\n",
"\n",
"Usage: hello [OPTIONS]\n",
" -h, --help display this message then exit.\n",
" -?, display this message then exit.\n",
" -v, --version display version information then exit.\n",
"\n",
" -t, --traditional output a greeting message with traditional format.\n",
" -n, --next-generation output a greeting message with next-generation format.\n",
"\n",
"Report bugs to <jinheking@gmail.com>\n");
}
else if (item.option == "-v" || item.option == "--version"){
char[] output = item.value;
writefln("Hello World - jinheking's hello world. 0.01 version\n");
}
else if (item.option == "-t" || item.option == "--traditional"){
char[] output = item.value;
writefln("Hello, World\n");
}
else if (item.option == "-n" || item.option == "--next-generation"){
char[] output = item.value;
writefln("+---------------+\n",
"| Hello, world! |\n",
"+---------------+\n");
}
iLen++;
}
if(iLen==0){
writefln("Mr. Watson. Come Here. I need you.");
}
}
dmd hello.d getopt.d -D
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评论
13 楼
jinheking
2007-04-29
谢谢！
我会认真的读的。
我会认真的读的。
12 楼
qiezi
2007-04-29
有时间还是多看看D语法吧，很多东西都有简化写法。比如：
可以简化成：
D在简化语法上做了很多工作，你都不用它，怎么体会出它的好处呢。。
char[][] longoptions; longoptions.length = 5; longoptions[++idx2] = "test1"; longoptions[++idx2] = "test2="; longoptions[++idx2] = "test10"; longoptions[++idx2] = "test20="; longoptions[++idx2] = "test30";
可以简化成：
char[][] longoptions = [ "test1", "test2=", "test10", "test20=", "test30" ];
D在简化语法上做了很多工作，你都不用它，怎么体会出它的好处呢。。
11 楼
qiezi
2007-04-29
忙的问题找管理员吧。。成员应该都可以上传的
10 楼
jinheking
2007-04-29
主要是，我想上传，但是不知道为什么不能够上传。老说忙
还是，我没有这个权限？
还是，我没有这个权限？
9 楼
jinheking
2007-04-29
switch(item.option){
case "-h":
case "-?":
case "--help":
writefln("Version:0.02(2007-04-29)\n",
"``Hello World!'' is a greeting program which wrote by jinheking.\n",
"\n",
"Usage: hello [OPTIONS]\n",
" -h, --help display this message then exit.\n",
" -?, display this message then exit.\n",
" -v, --version display version information then exit.\n",
"\n",
" -t, --traditional output a greeting message with traditional format.\n",
" -n, --next-generation output a greeting message with next-generation format.\n",
"\n",
"Report bugs to <jinheking@gmail.com>\n");
break;
case "-v":
case "--version":
writefln("Hello World - jinheking's hello world. 0.02 version\n");
break;
case "-t":
case "--traditional":
writefln("Hello, World\n");
break;
case "-n":
case "--next-generation":
writefln("+---------------+\n",
"| Hello, world! |\n",
"+---------------+\n");
break;
default:
break;
}
iLen++;
}
8 楼
jinheking
2007-04-29
switch(item.option){
case "-h":
case "-?":
case "--help":
writefln("Version:0.02(2007-04-29)\n",
"``Hello World!'' is a greeting program which wrote by jinheking.\n",
"\n",
"Usage: hello [OPTIONS]\n",
" -h, --help display this message then exit.\n",
" -?, display this message then exit.\n",
" -v, --version display version information then exit.\n",
"\n",
" -t, --traditional output a greeting message with traditional format.\n",
" -n, --next-generation output a greeting message with next-generation format.\n",
"\n",
"Report bugs to <jinheking@gmail.com>\n");
break;
case "-v":
case "--version":
writefln("Hello World - jinheking's hello world. 0.02 version\n");
break;
case "-t":
case "--traditional":
writefln("Hello, World\n");
break;
case "-n":
case "--next-generation":
writefln("+---------------+\n",
"| Hello, world! |\n",
"+---------------+\n");
break;
default:
break;
}
iLen++;
}
case "-h":
case "-?":
case "--help":
writefln("Version:0.02(2007-04-29)\n",
"``Hello World!'' is a greeting program which wrote by jinheking.\n",
"\n",
"Usage: hello [OPTIONS]\n",
" -h, --help display this message then exit.\n",
" -?, display this message then exit.\n",
" -v, --version display version information then exit.\n",
"\n",
" -t, --traditional output a greeting message with traditional format.\n",
" -n, --next-generation output a greeting message with next-generation format.\n",
"\n",
"Report bugs to <jinheking@gmail.com>\n");
break;
case "-v":
case "--version":
writefln("Hello World - jinheking's hello world. 0.02 version\n");
break;
case "-t":
case "--traditional":
writefln("Hello, World\n");
break;
case "-n":
case "--next-generation":
writefln("+---------------+\n",
"| Hello, world! |\n",
"+---------------+\n");
break;
default:
break;
}
iLen++;
}
7 楼
qiezi
2007-04-29
标题应该写成getopt或是命令行解析器。。。
6 楼
qiezi
2007-04-29
现在最缺的就是各平台、库的头文件转到D，其它的包装成类什么的都还好办点。
5 楼
soulmachine
2007-04-29
太长了，不愿看。应该不是win32 下的GUI版的hello world吧
4 楼
oldrev
2007-04-29
看来最有用的项目还是写一份详细的 D 文档
3 楼
jinheking
2007-04-29
谢谢，老大的夸奖
switch可以这样用吗？
又长了新本领
switch可以这样用吗？
又长了新本领
2 楼
oldrev
2007-04-29
真累啊？除了tango，有没有其他转换好的 posix 头文件
1 楼
qiezi
2007-04-29
好东西，不过标题起得不咋好，差点就没进来了。。
例子代码里面的if..else if..可以用switch代替，D语言支持对字符串进行switch:
看起来舒服一些，效率应该是比if更高，因为它在编译时就把case部分排序过了，然后使用二分查找来匹配。详见DMD\src\phobos\internal\switch.d里面_d_switch_string方法。
例子代码里面的if..else if..可以用switch代替，D语言支持对字符串进行switch:
switch(item.option)
{
case "-v":
case "--version:
xxxx
break;
case "-t":
case "--traditional":
break;
defaut:
}
看起来舒服一些，效率应该是比if更高，因为它在编译时就把case部分排序过了，然后使用二分查找来匹配。详见DMD\src\phobos\internal\switch.d里面_d_switch_string方法。
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**Mina入门：Mina版之HelloWorld** Apache Mina是一个开源项目，它提供了一个高度模块化、高性能的网络通信框架。Mina旨在简化网络应用的开发，支持多种传输协议，如TCP、UDP、HTTP、FTP等。在这个“Mina入门：Mina...
C++是C语言的增强版，它支持面向对象编程。输出"Hello, World!"的C++代码如下： ```cpp #include int main() { std::cout << "Hello, World!"; return 0; } ``` 这段代码需要通过编译器（如g++）编译后...
3. **编写代码**：在`src/main/java`目录下，会有一个名为`hudson.plugins.helloworld`的包，包含`HelloWorldBuilder`类，这是插件的核心，定义了构建过程的行为。`HelloWorldPublisher`类可能会负责展示“Hello ...
《MicroBlaze嵌入式系统初探：Hello_World.zip_world》 在探索嵌入式系统的世界时，MicroBlaze是一个不可忽视的重要角色。它是由Xilinx公司开发的一种软核处理器，可在FPGA（Field-Programmable Gate Array）芯片上...
4. **架构级性能增强**： - 由于可以手动编写SQL语句，开发者可以根据具体的业务需求和数据库特性来优化SQL，从而提高应用的整体性能。 5. **SQL语句与程序代码分离**： - 通过将SQL语句从程序代码中分离出来，...
7. **编程实践**：通过分析和运行"Hello World AF"，实际操作LabVIEW编程，增强对LabVIEW的理解。 8. **调试技巧**：如果程序包含错误或需要改进的地方，学习如何在LabVIEW中进行调试和优化。 9. **版本控制**：...
`Hello.js`是由DWR自动生成的，它包含了`HelloWorld`类的JavaScript接口。现在，你可以在JavaScript中像调用本地函数一样调用`HelloWorld`的方法： ```javascript Hello.sayHello('World', function(response) { ...
《加密技术探索：Cryptomator 1.5.10 "Hello World" 源码解析》 在当今数字化时代，数据安全成为了我们关注的重要议题。为了保护个人隐私和敏感信息，加密技术扮演了至关重要的角色。本次我们将深入探讨一个名为...
- `public class HelloWorld {`：声明了一个名为`HelloWorld`的公共类。在Java中，类名通常首字母大写，并且公共类的名称应该与文件名相同。 - `public static void main(String[] args) {`：定义了程序的入口点，...
【标题】"helloworld_html_world_halfwaym1i_" 暗示了这是一个关于HTML语言的基础教学项目，可能用于展示“Hello, World!”程序的实现。"halfwaym1i"可能是项目或版本的标识符，但具体含义不明确。 【描述】"this ...
本示例"ipad helloworld demo"正是为了指导开发者如何在iPad上创建并实现一个基础的应用程序，区别于iPhone的开发流程。 首先，我们要明确的是，iPad应用开发是基于iOS SDK中的UIKit框架，这个框架提供了创建用户...
**DWR HelloWorld 指南** DWR (Direct Web Remoting) 是一个开源的Java库，它允许在浏览器和服务器之间进行实时、双向通信，从而实现了JavaScript与Java代码的交互。DWR使得Web应用程序能够像桌面应用那样更新内容...