[英]awk pattern matching using variable with xml value
so here's my awk script. 所以这是我的awk脚本。 It's in a file called mAwk.awk
在名为mAwk.awk的文件中
#!usr/bin/awk -f
BEGIN {
FS="."
artifactPattern="/<artifactId>artifactName1|artifactName2<\\/artifactId>/"
# print "-------------" artifactPattern
}
{
toPrint = 1
if ($0 ~ /<dependencies>/) {
matches=1000;
}
else if ($0 ~ /<dependency>/) {
matches +=100;
}
else if ($0 ~ /<\/dependency>/) {
matches =1000;
}
else if ($0 ~ /<groupId>(com.group1.*)|(com.group2.*)|(com.group3.*)<\/groupId>/) {
matches += 10;
}
# else if($0 ~ /<artifactId>artifactName1|artifactName2<\/artifactId>/){
else if($0~artifactPattern){
matches += 1;
}
else if ($0 ~ /<version>[0-9]+\.[0-9]+\.[0-9]+<\/version>/) {
print "debugging: matched 1 -", matches
if (matches == 1111) {
lastPart="0-SNAPSHOT</version>"
print $1 "." $2+1 "." lastPart;
matches -= 11;
toPrint = 0
}
}
else if ($0 ~ /<\/dependencies>/) {
matches=0
}
if ( toPrint == 1) {
print $0
}
}
END {
}
Now here's the structure of the xml file (it's a pom.xml), just in-case: 现在,这是xml文件的结构(它是pom.xml),以防万一:
<project>
<random tags/>
<dependencies>
<dependency>
<groupId>data</groupId>
<artifactId>data</artifactId>
<version>1.2.3</version>
</dependency>
... repeat...
</dependencies>
</project
The problem is, if I use the line: 问题是,如果我使用该行:
# else if($0 ~ /<artifactId>payment-common|test2-common<\/artifactId>/){
instead of the one just below it, it matches just fine, but when I put the value inside a variable, it fails. 而不是它下面的那个,它匹配得很好,但是当我将值放在变量中时,它失败了。 What's going on here?
这里发生了什么?
My final aim is to call this through a shell script like... 我的最终目标是通过像...这样的shell脚本来调用它。
awk -v pattern=`cat ./artifactPatterns.txt` mAwk.awk -f myFile.xml
and the artifactPatterns.txt will look like waht the variable holds in the awk file, example: 而artifactPatterns.txt看起来就像变量在awk文件中保持的位置,例如:
/<artifactId>artifactName1|artifactName2<\\/artifactId>/
I've tried a bunch of things and nothing seems to work, thank you for your time! 我已经尝试了很多方法,但似乎没有任何效果,谢谢您的宝贵时间!
Take out the //
delimiters around the value of artifactPattern
. 取出
//
围绕artifactPattern
值的定界符。 These are the syntax for regexp literals, they don't belong in strings. 这些是regexp文字的语法,它们不属于字符串。 The use of the
~
operator implies that it's a regular expression. 使用
~
运算符表示它是一个正则表达式。
And since /
isn't a delimiter, you don't need to escape it inside the value. 并且由于
/
不是定界符,因此您无需在值内将其转义。
artifactPattern="<artifactId>artifactName1|artifactName2</artifactId>"
Also, $0 ~ /pattern/
can be simplified to just /pattern/
-- when a regexp literal appears by itself, it defaults to matching against the whole line. 同样,
$0 ~ /pattern/
可以简化为/pattern/
-当一个regexp文字本身出现时,它默认与整行匹配。
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