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Source multiline grep with pcregrep

Terminal - Source multiline grep with pcregrep
pcregrep --color -M -N CRLF "owa_pattern\.\w+\W*\([^\)]*\)" source.sql
2010-11-11 12:53:40
User: hute37
0
Source multiline grep with pcregrep

grep multiline in Perl regexp syntax with pcregrep

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

without need to install grep variant pcregrep, you can do multiline search with grep.

grep -Pzo "(?s)^(\s*)\N*main.*?{.*?^\1}" *.c

Explain:

-P activate perl-regexp for grep (a powerful extension of regular extensions)

-z supress newline at the end of line, subtituting it for null character. That is, grep knows where end of line is, but see input as a big one line.

-o print only matching. Because using -z, all file is like a big line, so if there is a match, all file would be printed, this way it don't.

in regexp:

(?s) activate PCRE_DOTALL, which means that '.' find any character or newline

\N find anything except newline, even with PCRE_DOTALL activated

.*? find '.' in nongreedy mode, that is, stops as soon as possible.

^ find start of line

\1 backreference to first group (\s*) This is a try to find same indentation of method

As you can imagine, this print the main method in a C (*.c) source file.

Comment by unixmonkey24864 202 weeks ago

grep version is very cool ;)

i like the trick to match closing brace with backreferences ...

Comment by hute37 201 weeks and 6 days ago

Your point of view

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