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Need help with scripting (find and replace)

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# 1  
Old 05-02-2011
Need help with scripting (find and replace)
Hello.

I've got to files (source and target).

1) target.txt:
Code:
....
#: tracopt/mimeview/php.py:97                                                                                                                                
msgid ""                                                                                                                                                     
"You appear to be using the PHP CGI binary. Trac requires the CLI version "                                                                                  
"for syntax highlighting."                                                                                                                                   
msgstr ""                                                                                                                                                    
"Похоже, вы используете CGI-версию PHP. Trac для подсветки синтаксиса "                                                                                      
"требуется CLI-версия."                                                                                                                                      
                                                                                                                                                             
#: tracopt/ticket/deleter.py:69 tracopt/ticket/deleter.py:82                                                                                                 
#: trac/ticket/templates/report_list.html:35                                                                                                                 
msgid "Delete"                                                                                                                                               
msgstr "Удалить"                                                                                                                                             
                                                                                                                                                             
#: tracopt/ticket/deleter.py:70 tracopt/ticket/templates/ticket_delete.html:43                                                                               
msgid "Delete ticket"                                                                                                                                        
msgstr "Удалить карточку"  
....

2) source.txt
Code:
...
msgstr ""                                                                                                                                                    
msgstr ""                                                                                                                                                    
msgstr "Dzēst"                                                                                                                                               
msgstr "Dzēst Card"                                                                                                                                          
msgstr "Dzēst komentāru% (num) s"                                                                                                                            
msgstr "Card #% (id) as anonīmus."                                                                                                                           
msgstr "Komentārs% (num) s par kartes #% (id) as anonīmus."                                                                                                  
msgstr "Komentārs% (num) s nav atrasts"                                                                                                       
...

Task:
Need to find all strings in target file that have msgstr in the begining and replace it with strings from source file
Count of lines with msgstr is the same for both of files. Overall count of strings - not the same, cause of the comments and msgid-strings.

Thanks in advance.
P.S. Sorry for my poor English
# 2  
Old 05-02-2011
source.txt has 8 lines of data. Assuming that you want -
one replacement per line of text in source.txt, i.e., 8 replacements.
There also has to be exactly the same number of lines with "msgstr" in source.txt as there are "msgstr" lines
in the target.txt file.
Code:
awk 'FILENAME=="source.txt" { arr[FNF]= $2 }
      FILENAME=="target.txt" { if( /^msgstr/ ~$1) {$2=arr[i++]}; print $0} ' source.txt target.txt > newfile.txt

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