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Shell Programming and Scripting

adding string to a file

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# 1  
Old 04-16-2007
adding string to a file
I 've to add the two statements to some java files:
setValid(false); // the call should be after the openeing curly brackets
return true; // the "return true" before the closing curly brackets

Input:

boolean isValid() {
. . .
}

Output:
boolean isValid() {
setValid(false); // the call should be after the openeing curly brackets

return true; // the "return true" before the closing curly brackets
}


How can I do that please!!!

Thank you
# 2  
Old 04-16-2007
Code:
sed -e "/{/a\\
setValid(false);" -e "/}/i\\
return true;" file

# 3  
Old 04-16-2007
anbu23.. it works fine!! But how to handle "new line"

boolean isValid()
{
. . .
}

Any ideas???
# 4  
Old 04-16-2007
Quote:
Originally Posted by andy2000
I 've to add the two statements to some java files:
setValid(false); // the call should be after the openeing curly brackets
return true; // the "return true" before the closing curly brackets

Input:

boolean isValid() {
. . .
}

Output:
boolean isValid() {
setValid(false); // the call should be after the openeing curly brackets

return true; // the "return true" before the closing curly brackets
}

Code:
awk '/boolean  isValid() {/ { print; print "  setValid(false);"; next }
                       /^}/ { print "return true;"; print; next }
                            {print}'

# 5  
Old 04-16-2007
if you have Python, here's an alternative:
Code:
#!/usr/bin/python
output = []
data = open("javafile").readlines()
for item in data:
     if "}" in item: output.append("return true;")
     output.append(item)     
     if "{" in item: output.append("setValid(false);") 
print ''.join(output )

output:
Code:
# ./test.py
boolean isValid() {
setValid(false);
return true;}

boolean isValid()
{
setValid(false);
return true;}

# 6  
Old 04-17-2007
Quote:
Originally Posted by andy2000
anbu23.. it works fine!! But how to handle "new line"

boolean isValid()
{
. . .
}

Any ideas???
Code:
$ cat file
boolean isValid()
{
. . .
}
$ sed -e "/{/a\\
> setValid(false);" -e "/}/i\\
> return true;" file
boolean isValid()
{
setValid(false);
. . .
return true;
}

What do you mean by new line?
# 7  
Old 04-17-2007
Code:
sed -e '$ i return true;' -e '1 a setValid(false);' filename
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