The main use of the matching text:
XmlNode channles
=
root.FirstChild; Regex r; Match m; r
=
new
Regex(
"
href\\s*=\\s*(?:\
"
(
?<
1
>
[
^
\
"
]*)\
"
|
(
?<
1
>
\\S
+
))\\s
+
\\S
+
\\s
+
title\\s
*=
\\s
*
(
?
:\
"
(?<2>[^\
"
]
*
)\
"
|(?<2>\\S+))
"
,RegexOptions.IgnoreCase
|
RegexOptions.Compiled);
for
(m
=
r.Match(str); m.Success; m
=
m.NextMatch()) 
{// rst+="link=" + m.Groups[1] + "\ntitle=" + m.Groups[2]+"\n"; XmlElement oitem=xml.CreateElement("item"); XmlElement o=xml.CreateElement("title"); o.InnerText=m.Groups[2].Value; oitem.AppendChild(o); O
=xml.CreateElement("link"); o.InnerText=m.Groups[1].Value; oitem.AppendChild(o); channles.AppendChild(oitem);
}
= Example STR
<
TR
> <
TD
> <
TR
height
=. 19
> <
TD
align = left
= Center
width
= 14
> <
IMG
the src
= / iconsThe / info / dot_h.gif
width
=. 5
height
=. 5
> </
TD
> <
TD
align = left
left =
> <
A
href
= / ZZH / 30630.nsf / (AllDocsByUnid) / C81ECBA70F9A8795C82570990031DE28? OpenDocument
target
= _blank
title
= "IC card student card and student card paper lost property list"
>
IC card student card and student card paper lost property list
</
A
> </
TD
><
td
align
=right
width
=80
><
font
color
=#000066
>
10-13 18:04
</
font
></
td
></
tr
><
tr
height
=19
><
td
align
=center
width
=14
><
img
src
=/icons/info/dot_h.gif
width
=5
height
=5
></
td
><
td
align
=left
><
a
href
=/zzh/30630.nsf/(AllDocsByUnid)/81BF13BCCAB992A1C825709900300465?opendocument
target
= _blank
title
= "About" Excellent SRT Program Award "to declare the notice"
>
About "Excellent SRT Program Award" Shen
</
A
> </
td
> <
td
align = left
= right
width
= 80
> <
font
Color
= # 000066
>
10-13 17:44
</
font
> </
TD
> </
TR
> <
TR
height
=. 19
> <
TD
align = left
= Center
width
= 14
> <
IMG
the src
= / iconsThe / info / dot_h.gif
width
=. 5
height
=. 5
> </
eg
> <
Td
align = left
= left
> <
A
href
= / ZZH / 30630.nsf / (AllDocsByUnid) / 713C777073ED05DBC8257099002FE71B? OpenDocument
target
= _blank
title
= "new round of SRT project application notice"
>
new round of SRT project application notice
</
A
> </
TD
>
Regular expression parsing the case:
. 1, the href = \\ \\ S * S *
matching the href, behind which there is no space = both, there may be several spaces.
2, (:?? \ " ? (<1> [^ \"] *) \ "| (<1> \\ S +))
removal of data 1, Link i.e., there are no marks on both sides thereof.
3 , \\ s + \\ S + \\ s +
match at least one blank each, followed by at least one non-space, each followed by at least one empty.
in fact, the match is target = _blank
We are continuing to make.
Found that regular expression too strong, simply SQL text processing, stronger than SQL!
Now I feel, I do not know that they are learning in order to achieve h2R service Regex, or to learn Regex and take h2R service to do the exercises.
They are very good.
Reproduced in: https: //www.cnblogs.com/civ3/archive/2005/10/16/256119.html