加入模式

Question

我有通過{}用幾行分隔模式的文件，我想找到對他們的具體sintax，在我的源文件的兩行之間的界線有時線條出現這樣的：

{ some text size = 
      0 }

或

{ some text size 
     = 0 }

等案件

{some text size = 0 }

我會就像過濾我的源文件並加入符合分隔條件的行並將其轉換爲一行！

Answer 1

快速和骯髒的：（GAWK需要）：

awk -v RS="\0" '{gsub(/ size\s*=\s*0\s*}/," size = 0}")}1' file 

測試與你的問題的文字作爲內容的文件：

kent$ cat test.txt 
I have files with paterns delimited by {}, on my source files sometimes I have two lines like this: 
{ some text size = 
      0 } 
or 
{ some text size 
     = 0 } 
and other cases 
{some text size = 0 } 
{this should stay as it is 

} 

kent$ awk -v RS="\0" '{gsub(/ size\s*=\s*0\s*}/," size = 0}")}1' test.txt 
I have files with paterns delimited by {}, on my source files sometimes I have two lines like this: 
{ some text size = 0} 
or 
{ some text size = 0} 
and other cases 
{some text size = 0} 
{this should stay as it is 

} 

Answer 2

Perl的解決方案：

• 簡單的命令-line：

  perl -pe 'local $/; s/({.*size *(?:= *)?)\n/$1/g;' infile >outfile 
  

• 腳本：

  #!/usr/bin/env perl 
  
  use strict; 
  use warnings; 
  
  $filename = "/path/to/file" 
  
  open FILE, "<$filename" or die $!; 
  local $/; 
  my $txt = <FILE>; 
  close FILE; 
  
  $txt =~ s/({.*size) *(?:= *\n|\n *=) *(0 *})/$1 = $2/g; 
  
  open FILE, ">$filename" or die $!; 
  print FILE $txt; 
  close FILE;