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I had to robustify a database layer that was talking to a DB that couldn't store a range of characters including single quote and other punctuation. Also some of the calling code, which I wasn't able to touch, would fail to escape quote characters properly.
Code snippets:
sub fix_dodgy_chars { my $s = shift; $s = '' unless defined $s; $s =~ s/[:;<>\[\]`{|}\000-\037]/ /g; # replace dodgy chars with sp +ace $s =~ s/\'/\_/; # single quote translated to underscore $s; } sub Prepare { ... # map non-escaped embedded single or double quotes to underscore where + neither at end of line # nor followed by semicolon, comma, whitespace or rightbracket $sqlstring =~ s/([^\\\s\,\(])([\'\"])(?!($|[\;\,\s\)]))/$1_/g; # then examine quoted strings and replace characters that sql cannot h +andle, currently # : ; < > [ ] ` { | } & $sqlstring =~ s/\"([^\"]*)\"/'"'.fix_dodgy_chars($1).'"'/ge;} ... }

In reply to Re: The craziest RegExes you ever created by peterdragon
in thread The craziest RegExes you ever created by Ieronim

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