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POConvert multiple Unicode in a string to character
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  1. POConvert multiple Unicode in a string to character
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    copied!<p>Problem -- I have a string, say <code>Buna$002C_TexasBuna$002C_Texas</code>' and where <code>$</code> is followed by Unicode. I want to replace these Unicode with its respective Unicode character representation.</p> <p>In <a href="http://en.wikipedia.org/wiki/Perl" rel="nofollow">Perl</a> if any Unicode is in the form of "<code>\x{002C}</code> then it will be converted to it respective Unicode character. Below is the sample code.</p> <pre><code>#!/usr/bin/perl my $string = "Hello \x{263A}!\n"; @arr= split //,$string; print "@arr"; </code></pre> <p>I am processing a file which contain 10 million of records. So I have these strings in a scalar variable. To do the same as above I am substituting <code>$4_digit_unicode</code> to <code>\x{4_digit_unicode}</code> as below.</p> <pre><code>$str = 'Buna$002C_TexasBuna$002C_Texas'; $str =~s/\$(.{4})/\\x\{$1\}/g; $str = "$str" </code></pre> <p>It gives me</p> <pre><code>Buna\x{002C}_TexasBuna\x{002C}_Texas </code></pre> <p>It is because at <code>$str = "$str"</code>, line <code>$str</code> is being interpolated, but not its value. So <code>\x{002C}</code> is not being interpolated by Perl.</p> <p>Is there a way to force Perl so that it will also interpolate the contents of <code>$str</code> too?</p> <p>OR</p> <p>Is there another method to achieve this? I do not want to take out each of the Unicodes then pack it using <code>pack "U4",0x002C</code> and then substitute it back. But something in one line (like the below unsuccessful attempt) is OK.</p> <pre><code>$str =~ s/\$(.{4})/pack("U4",$1)/g; </code></pre> <p>I know the above is wrong; but can I do something like above?</p> <p>For the input string <code>$str = 'Buna$002C_TexasBuna$002C_Texas'</code>, the desired output is <code>Buna,_TexasBuna,_Texas</code>.</p>
 

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