joshtronic

in Software Development #PHP

WorkFlowy: Adventures in Text Parsing

First off, if you're not familiar with WorkFlowy you may want to watch this video. WorkFlowy is quite simply a list maker and based on my own usage of planning out a program / script I decided to create a script to take an exported list and convert it into a the workings of the program itself.

The script that I wrote is in PHP and only generates PHP files. I lost interest in the project, at least in the capacity of adding support for additional languages, so I took it down from my github (oh yeah, and no one was interested in the project itself ;))

At best, you can use this to take a list like this:

- My Script
  - [IF] Check if file exists
  - Reads the file in
  - [FOREACH] Loops through the data
    - [IF] Check if the data is empty
      - Processes the data
    - [ELSE]
      - Does some other stuff
  - Closes the file
  - [WHILE] Just a while loop
    - Increment counter

And turn it into something like this:

<?php

/**


    

  • My Script
*/
    • 



// Check if file exists
if ($var == true)
{
}


// Reads the file in


// Loops through the data
foreach ($array as $key => $value)
{
// Check if the data is empty
if ($var == true)
{
// Processes the data
}
else
{
// Does some other stuff
}
}


// Closes the file


// Just a while loop
while ($i < 10)
{
// Increment counter
}


?>

Assuming you're into that, here's the source:

<!DOCTYPE html>
<html>
    <body>
        <h1>WorkFlowy Code Generator</h1>
        <form action="" method="post">
            <textarea name="list" rows="20" cols="100"><?php
                if (isset($_POST['list']))
                {
                    $items = explode("\n", $_POST['list']);

if (count($items) > 0)
{
$indents		 = null;
$previous_spaces = null;
$parenthesis	 = 0;


foreach ($items as $item)
{
preg_match('/^( +)?(- )(.+)$/', $item, $matches);


$spaces = strlen($matches[1]);
$item   = trim($matches[3]);


$is_syntax = (strpos($item, '[') === 0);


if ($item != '')
{
if ($indents === null)
{
$indents = 0;
echo '<?php' . "\n\n";
echo '/**' . "\n" . ' * ' . $item . "\n" . ' */' . "\n\n";
}
else
{
if ($previous_spaces !== null)
{
if ($previous_spaces > $spaces)
{
$difference = $previous_spaces - $spaces;


for ($i = 0; $i < $difference; $i = $i + 2)
{
$indents--;


if ($parenthesis > 0)
{
echo str_repeat("\t", $indents) . '}' . "\n\n";
$parenthesis--;
}
}
}
elseif ($previous_spaces < $spaces)
{
$difference = $spaces - $previous_spaces;


for ($i = 0; $i < $difference; $i = $i + 2)
{
$indents++;
}
}
else
{
if ($parenthesis > 0)
{
echo $indent_string . '}' . "\n\n";
$parenthesis--;
}
}
}


$indent_string = str_repeat("\t", $indents);


if ($is_syntax)
{
preg_match('/^([.+])(.+)?$/', $item, $matches);


$type = substr($matches[1], 1, strlen($matches[1]) - 2);
$item = trim($matches[2]);
}
else
{
$type = false;
}


if ($item != '')
{
echo $indent_string . '// ' . $item . "\n";
}


if ($type != false)
{
switch ($type)
{
case 'FOR':
echo $indent_string . 'for ($i = 0; $i < 10; $i++)' . "\n" . $indent_string . '{';
break;


case 'FOREACH':
echo $indent_string . 'foreach ($array as $key => $value)' . "\n" . $indent_string . '{';
break;


case 'IF':
echo $indent_string . 'if ($var == true)' . "\n" . $indent_string . '{';
break;


case 'ELSEIF':
echo $indent_string . 'elseif ($var == false)' . "\n" . $indent_string . '{';
break;


case 'ELSE':
echo $indent_string . 'else' . "\n" . $indent_string . '{';
break;


case 'WHILE':
echo $indent_string . 'while ($i < 10)' . "\n" . $indent_string . '{';
break;
}


$parenthesis++;
}


echo "\n";


$previous_spaces = $spaces;
}
}
}


if ($parenthesis > 0)
{
echo '}' . "\n\n";
}


echo '?>';
}
}
?></textarea>


<input type="submit" />
</form>
</body>
</html>