使用RE进行解析？ [英] Parsing using RE?
问题描述
Hello all
我需要解析一个巨大的字符串
Key< Delim1>值< Delim2>密钥< Delim1>值< Delim2>键< Delim1>
值< Delim3>
键< Delim1>值< Delim2>密钥< Delim1>值< Delim2>键< Delim1>
值< Delim3>
重复几十万次
< Delim1>分配Key，Value对
< Delim2>分成两个不同的Key，Value对
< Delim2>分隔记录。
我需要获得Key Value对并用一个表格填充
信息。
.NET正则表达式是否值得，以及如何以干净优化的方式进行
。
谢谢
-Ravi Singh
Hello all
I have a huge string that I need to parse
Key <Delim1> Value <Delim2> Key <Delim1> Value <Delim2> Key <Delim1>
Value <Delim3>
Key <Delim1> Value <Delim2> Key <Delim1> Value <Delim2> Key <Delim1>
Value <Delim3>
repeat for a couple hundred thousand times
The <Delim1> seprates the Key, Value pair
<Delim2> seprates two different Key,Value pairs
<Delim2> seprates records.
I need to get the Key Value pairs and populate a table with that
information.
Would the .NET regular expressions be worth while and how would I go
about doing it in a clean optimized fashion.
Thanks
-Ravi Singh
推荐答案
是的，肯定的。
你''我需要写你自己的reg exp tho
我建议使用一个名为expresso的应用程序。 free reg exp tester / builder。
http://www.ultrapico.com /Expresso.htm
如果所有分隔符都是唯一的，则肯定使用reg exp。否则，你将是
looping" while（str.indexOf（"< Delim"））{..."等等
使用正则表达式查找匹配会更快，并返回
数组匹配（和字段）
如果你卡住了，重新发布。
HTH
sam
Ravi Singh（UCSD）" < RA ********* @ gmail.com>在消息中写道
news：11 ********************** @ l41g2000cwc.googlegr oups.com ...
yes, definately.
you''ll need to write you own reg exp tho
i''d recommend using an app called expresso. free reg exp tester/builder.
http://www.ultrapico.com/Expresso.htm
if all the delimiters are unique definately use a reg exp. else, you''ll be
looping "while (str.indexOf("<Delim")) { ..." etc.
using regular expression to find matches would be much quicker, and return
array of matches (and fields)
if you get stuck, repost.
HTH
sam
"Ravi Singh (UCSD)" <ra*********@gmail.com> wrote in message
news:11**********************@l41g2000cwc.googlegr oups.com...
大家好。
我需要解析一个巨大的字符串
Key< Delim1>值< Delim2>密钥< Delim1>值< Delim2>键< Delim1>
值< Delim3>
键< Delim1>值< Delim2>密钥< Delim1>值< Delim2>键< Delim1>
值< Delim3>
重复几十万次
< Delim1>分离Key，Value对
< Delim2>分隔两个不同的Key，Value对
< Delim2>分离记录。
我需要获取Key Value对并用表格填充表格。
.NET正则表达式是否值得，以及如何我会以干净优化的方式去做吗？
谢谢
-Ravi Singh
Hello all
I have a huge string that I need to parse
Key <Delim1> Value <Delim2> Key <Delim1> Value <Delim2> Key <Delim1>
Value <Delim3>
Key <Delim1> Value <Delim2> Key <Delim1> Value <Delim2> Key <Delim1>
Value <Delim3>
repeat for a couple hundred thousand times
The <Delim1> seprates the Key, Value pair
<Delim2> seprates two different Key,Value pairs
<Delim2> seprates records.
I need to get the Key Value pairs and populate a table with that
information.
Would the .NET regular expressions be worth while and how would I go
about doing it in a clean optimized fashion.
Thanks
-Ravi Singh
string input =" Key< Delim1>值< Delim2>密钥< Delim1>值< Delim2>
键< Delim1>值< Delim3>键< Delim1>值< Delim2>键< Delim1>
值< Delim2>密钥< Delim1>值< Delim3>" ;;
正则表达式delim1 =新正则表达式（"< Delim1>"）;
正则表达式delim2 =新正则表达式（ "< Delim2>"）;
Regex delim3 = new Regex（"< Delim3>"）;
string [] rets3 = delim3.Split（输入）;
string [] rets2 = delim2.Split（String.Concat（rets3））;
string [] rets1 = delim1.Split（ String.Concat（rets2））;
rets 2和rets 1不是我所期望的。 =（。任何想法？
谢谢
-Ravi。
string input = "Key <Delim1> Value <Delim2> Key <Delim1> Value <Delim2>
Key <Delim1> Value <Delim3>Key <Delim1> Value <Delim2> Key <Delim1>
Value <Delim2> Key <Delim1> Value <Delim3>";
Regex delim1 = new Regex("<Delim1>");
Regex delim2 = new Regex("<Delim2>");
Regex delim3 = new Regex("<Delim3>");
string[] rets3 = delim3.Split(input);
string[] rets2 = delim2.Split(String.Concat(rets3));
string[] rets1 = delim1.Split(String.Concat(rets2));
rets 2 and rets 1 is not what I expect it to be. =(. any ideas?
Thanks
-Ravi.
I得到它:-)
谢谢
I got it :-)
Thanks
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