Swap literal single quote with literal double quote-CodePudding

I have a multiline string that's a mix of html and php, like this

echo '
<tr >' . '            
  <td colspan="3" style="border-bottom: 1px solid #C9C9C9;">' . draw_separator('pixel_trans.gif', '1', '1') . '</td>' . '          
</tr>' . '          
<tr >' . '            
  <td colspan="3" style="background: #FFFFFF;">' . draw_separator('pixel_trans.gif', '1', '10') . '</td>' . '          
</tr>' . '          
<tr >' . '            
  <td colspan="3" style="border-top: 1px solid #C9C9C9;">' . draw_separator('pixel_trans.gif', '1', '1') . '</td>' . '          
</tr>' . '          
<form action="' . href_link('indeed.php', 'model=' . $model . '&action=add_product') . '" method="post">' . '          
<tr >' . '            
  <td  align="right" valign="middle">' . TEXT_STEP_4 . '</td>' . '            
  <td  align="center" valign="middle"></td>' . '          
</tr>' . '          
<tr >' . '             
  <td></td>
</tr>';

and I want to transliterate the ' with the ", or swap the single and double quotes programmatically.

Whichever language I've tried this in, they all interpret one or more parts of the string instead of just accepting it as a character. I've tried foreach($chars as $char) and the dreaded for($i=0;$i<strlen($str);$i ) in php, tried multiline strings and/or HEREDOC/NOWDOC in php, javascript, and perl (which just returned 106), even Excel/VBA and regex in notepad . I have tried escaping all the escapable characters as well.

I know I could brute force it by replacing each character with some arbitrary string and then re-replacing those strings, but I was hoping for something more programmatic in case I wanted to extend VS Code to swap the characters reliably. It's more of a way for me to procrastinate than any serious need, but does anyone have any ideas?

EDIT: All the text in the codeblock is part of the string, including the echo statement. I suppose an eventual goal is to be able to swap the two characters in my IDE, but for now I just want to edit this block of text without going character by character (there's more of this code).

CodePudding user response：

HEREDOC would work just fine. You do need to prep your variables first, but I think this method not only makes your code more readable, but also separates logic from presentation

$pix_trans1 = draw_separator('pixel_trans.gif', '1', '1');
$pix_trans10 = draw_separator('pixel_trans.gif', '1', '10');
$herf = href_link('indeed.php', 'model=' . $model . '&action=add_product');
$tstep4 = TEXT_STEP_4 ;

echo <<<EOT
<tr >            
  <td colspan="3" style="border-bottom: 1px solid #C9C9C9;">$pix_trans1</td>          
</tr>          
<tr >            
  <td colspan="3" style="background: #FFFFFF;">$pix_trans10</td>          
</tr>          
<tr >            
  <td colspan="3" style="border-top: 1px solid #C9C9C9;">$pix_trans1</td>          
</tr>          
<form action="$href" method="post">          
<tr >            
  <td  align="right" valign="middle">$tsept4</td>            
  <td  align="center" valign="middle"></td>          
</tr>          
<tr >             
  <td></td>
</tr>

EOT;

CodePudding user response：

In Perl, the following should work:

tr/"'/'"/

The problem is when you try to use it in a one liner and shell quoting interferes.

perl -pe 'tr/"'\''/'\''"/'

CodePudding user response：

Using the alternative syntax for control structures in PHP could be a workaround for you:

<tr >
    <td colspan="3" style="border-bottom: 1px solid #C9C9C9;">
        <?= draw_separator('pixel_trans.gif', '1', '1') ?>
    </td>
</tr>
<tr >
    <td colspan="3" style="background: #FFFFFF;">
        <?= draw_separator('pixel_trans.gif', '1', '10') ?>
    </td>
</tr>
<tr >
    <td colspan="3" style="border-top: 1px solid #C9C9C9;">
        <?= draw_separator('pixel_trans.gif', '1', '1') ?>
    </td>
</tr>
<form action="<?= href_link('indeed.php', 'model=' . $model . '&action=add_product') ?>" method="post">
    <tr >
        <td  align="right" valign="middle"><?= TEXT_STEP_4 ?></td>
        <td  align="center" valign="middle"></td>
    </tr>
    <tr >
        <td></td>
    </tr>
</form>

Where <?= … ?> is the same as <?php echo … ?>.

If you need to keep the string in a variable, you could make you of output buffering.