UltraEdit正则表达式使用（Regular Expressions in UltraEdit）

正则表达式作为模式匹配，经常用于查找/替换操作的特定字符串。使用正则表达式来简化操作和提高效率的方式有许多。下面列出了一个用于ultra - edit样式和unix样式正则表达式的参考以及一些示例，演示如何在ultra - edit中使用正则表达式

Regular Expressions in UltraEdit
UltraEdit Symbol	UNIX Symbol	Function
%	^	Matches/anchors the beginning of line. 行首
$	$	Matches/anchors the end of line. 行尾
?	.	Matches any single character except a newline character. Does not match repeated newlines. 单个字符
*		Matches any number of occurrences of any character except newline. 0-n个字符
+	+	Matches one or more of the preceding character/expression. At least one occurrence of the character must be found. Does not match repeated newlines. 1-n个字符
++	*	Matches the preceding character/expression zero or more times. Does not match repeated newlines.
^	\	Indicates the next character has a special meaning. "n" on its own matches the character "n". "^n" (UE expressions) or "\n" (UNIX expressions) matches a linefeed or newline character. 转义符.
[ ]	[ ]	Matches any single character or range in the brackets. 括弧内匹配一个或某个范围的单字符
[~xyz]	[^xyz]	A negative character set. Matches any characters NOT between brackets.括弧内匹配除这个或这个范围的单字符
^b	\f	Matches a page break/form feed character.分页符
^p	\p	Matches a newline (CR/LF) (paragraph) (DOS Files). DOS换行符
^r	\r	Matches a newline (CR Only) (paragraph) (MAC Files).MAC换行符
^n	\n	Matches a newline (LF Only) (paragraph) (UNIX Files).UNIX换行符
^t	\t	Matches a tab character.制表符
[0-9]	\d	Matches a digit character.一个数字
[~0-9]	\D	Matches a non-digit character.除了数字的符号
[ ^t^b]	\s	Matches any white space including space, tab, form feed, etc., but not newline. 空格
[~ ^t^b]	\S	Matches any non-white space character but not newline. 非空格（除换行）
	\v	Matches a vertical tab character.垂直制表符
[0-9a-z_]	\w	Matches any alphanumeric character including underscore. 一个标识符
[~0-9a-z_]	\W	Matches any character except alphanumeric characters and underscore. 非标识符
^{A^}^{B^}	(A\|B)	Matches expression A OR B. 分支（A或B）
^	\	Overrides the following regular expression character.
^(...^)	(...)	Brackets or tags an expression to use in the replace command. A regular expression may have up to 9 tagged expressions, numbered according to their order in the regular expression. 子组
^1	\1	Numerical reference to tagged expressions. Text matched with tagged expressions may be used in Replace commands with this format. 反向引用子组的匹配值
Note: ^ refers to the character '^' NOT Control Key + value. ^是一个字符，不是Ctrl键

使用样例(UltraEdit/UNIX Regular Expression Examples)

简单字符串匹配(Simple String Matching)

简单的字符串匹配是正则表达式最基本的形式，不但快速而且可以方便地一次搜索多个字符串，无须执行多个查找操作。

UltraEdit RegExp:

Find What: m?n
Matches: "man" and "men" but not "moon"

Find What: t*t
Matches: "test", "tonight" and "tea time" (the "tea t" portion) but not "tea
time" (newline between "tea " and "time").

Find What: Te+st
Matches: "test", "teest", "teeeest", etc. but does not match "tst"

UNIX RegExp:

Find What: m.n
Matches: "man" and "men" but not "moon"

Find What: t.*t
Matches: "test", "tonight" and "tea time" (the "tea t" portion) but not "tea
time" (newline between "tea " and "time").

Find What: Te+st
Matches: "test", "teest", "teeeest", etc. but does not match "tst"

Character Sets

A character set is a group of characters bounded by "[" and "]". These may be used to designate specific characters to be matched or ranges (i.e. [aeud], or [a-z]).

UltraEdit RegExp:

Find What: [aeiou]
Matches: every vowel

NOTE: Regular Expressions in UltraEdit are not case-sensitive unless Match Case is selected in the Find dialog.

Find What: [,.^?]
Matches: a literal ",", "." or "?".

Because the "?" is a symbol used in expressions it must be "escaped" for the literal character to be matched rather than interpreted as an expression.

Find What: [0-9a-z]
Matches: any digit or letter

Find What: [~0-9]
Matches: any character except a digit (~ means NOT the following)

UNIX RegExp:

Find What: [aeiou]
Matches: every vowel

Find What: [,\.?]
Matches: a literal ",", "." or "?".
Because the "." is a symbol used in expressions it must be "escaped" for the literal character to be matched rather than interpreted as an expression.

Find What: [0-9a-z]
Matches: any digit or letter

Find What: [^0-9]
Matches: any character except a digit (^ means NOT the following)

OR Expressions

Currently UltraEdit only allows for the specification of two operands for an OR expression. You may search for an expression A or B as follows:

UltraEdit RegExp:

Find What: ^{John^}^{Tom^}

UNIX RegExp:

Find What: (John|Tom)

There should be nothing between the two expressions. You may combine A or B and C or D in the same search as follows:

UltraEdit RegExp:

Find What: ^{John^}^{Tom^} ^{Smith^}^{Jones^}

UNIX RegExp:

Find What: (John|Tom) (Smith|Jone)

This will search for "John" or "Tom" followed by "Smith" or "Jones".

Deleting Blank Lines

With Regular Expressions selected in the Replace dialog this will match the a CR/LF (DOS line terminator) immediately followed by the end of a line (i.e., a blank line) and replace it with nothing, effectively deleting it:

UltraEdit RegExp:

Find What: ^p$
Replace With: (literally nothing)

UNIX RegExp:

Find What: \p$
Replace With: (literally nothing)

Reformatting Text With Tagged Expressions

Example 1:

Tagged expressions may be used to mark various data members so that they may be reorganized, reformatting the data. For example, it might be useful to be able to rearrange:

John Smith, 385 Central Ave., Cincinnati, OH, 45238

into:

45238, Smith, John, 385 Central Ave., Cincinnati, OH

UltraEdit RegExp:

Find What: %^([a-z]+^) ^([a-z]+^), ^(*^), ^(*^), ^(*^), ^([0-9]+^)
Replace With: ^6, ^2, ^1, ^3, ^4, ^5

UNIX RegExp:

Find What: ^([a-z]+) ([a-z]+), (.*), (.*), (.*), ([0-9]+)
Replace With: \6, \2, \1, \3, \4, \5

Example 2:

If you have a web-based registration system it might be useful to rearrange the order data into a format easily used by a database:

name = John Smith
address1 = 385 Central Ave.
address2 =
city = Cincinnati
state = OH
zip = 45238

into:

John Smith, 385 Central Ave.,, Cincinnati, OH, 45238,

This can be done with the following expression:

UltraEdit RegExp:

Find What: name = ^([a-z ]+^)^paddress1 = ^([a-z 0-9.,]+^)^paddress2 = ^([a-z 0-9.,]++^)^pcity = ^([a-z]+^)^pstate = ^([a-z]+^)^pzip = ^([0-9^-]+^)
Replace With:^1, ^2, ^3, ^4, ^5, ^6

UNIX RegExp:

Find What: name = ([a-z ]+)\paddress1 = ([a-z 0-9.,]+)\paddress2 = ([a-z 0-9.,]*)\pcity = ([a-z]+)\pstate = ([a-z]+)\pzip = ([0-9^-]+)
Replace With:\1, \2, \3, \4, \5, \6

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UltraEdit正则表达式使用（Regular Expressions in UltraEdit）

使用样例(UltraEdit/UNIX Regular Expression Examples)

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