How can I match double-quoted strings with escaped double-quote characters?

Question

I need a Perl regular expression to match a string. I\'m assuming only double-quoted strings, that a \\\" is a literal quote character and NOT the end of the string, and tha

Answer 1

Try this piece of code : (\".+")

Answer 2

See Text::Balanced. It's better than reinvent wheel. Use gen_delimited_pat to see result pattern and learn form it.

Answer 3

RegExp::Common is another useful tool to be aware of. It contains regexps for many common cases, included quoted strings:

use Regexp::Common;

my $str = '" this is a \" quoted string"';
if ($str =~ $RE{quoted}) {
  # do something
}

Answer 4

A generic solution(matching all backslashed characters):

/ \A "               # Start of string and opening quote
  (?:                #  Start group
    [^\\"]           #   Anything but a backslash or a quote
    |                #  or
    \\.              #   Backslash and anything
  )*                 # End of group
  " \z               # Closing quote and end of string
  /xms

Answer 5

How about this?

/"([^\\"]|\\\\|\\")*"/

matches zero or more characters that aren't slashes or quotes OR two slashes OR a slash then a quote

Answer 6

Here's a very simple way:

/"(?:\\?.)*?"/

Just remember if you're embedding such a regex in a string to double the backslashes.