This function is used for indenting (formatting) a messy target xhtml page into a properly indentet page. It requires all the tags in the page to be properly closed. It also formats the stuff between
Function description:
This function is used for indenting (formatting) a messy target xhtml page
into a properly indentet page.
It requires all the tags in the page to be properly closed.
It also formats the stuff between <pre> tags, so beware.
$source
This variable has the original xhtml/xml source in it.
By default its included by reference, but you can take off the & and uncomment
the return line at the bottom to make it return the indentet string without
modifying the old one.
$indenter
This variable is the indenter character(s) used for identing (duh).
example:
indent_xhtml($source, $indenter = ' ');
+-------------------+
|<html> |
| <head> |
| <title> |
+-------------------+
indent_xhtml($source, $indenter = ' ');
+-------------------+
|<html> |
| <head> |
| <title> |
+-------------------+
*******************************************************************************/
function indent_xhtml(&$source, $indenter = ' ') {
// Remove all pre-existing formatting.
// Remove all newlines.
$source = str_replace("\n", '', $source);
$source = str_replace("\r", '', $source);
// Remove all tabs.
$source = str_replace("\t", '', $source);
// Remove all space after ">" and before "<".
$source = ereg_replace(">( )*", ">", $source);
$source = ereg_replace("( )*<", "<", $source);
// Iterate through the source.
$level = 0;
$source_len = strlen($source);
$pt = 0;
while ($pt < $source_len) {
if ($source{$pt} === '<') {
// We have entered a tag.
// Remember the point where the tag starts.
$started_at = $pt;
$tag_level = 1;
// If the second letter of the tag is "/", assume its an ending tag.
if ($source{$pt+1} === '/') {
$tag_level = -1;
}
// If the second letter of the tag is "!", assume its an "invisible" tag.
if ($source{$pt+1} === '!') {
$tag_level = 0;
}
// Iterate throught the source until the end of tag.
while ($source{$pt} !== '>') {
$pt++;
}
// If the second last letter is "/", assume its a self ending tag.
if ($source{$pt-1} === '/') {
$tag_level = 0;
}
$tag_lenght = $pt+1-$started_at;
// Decide the level of indention for this tag.
// If this was an ending tag, decrease indent level for this tag..
if ($tag_level === -1) {
$level--;
}
// Place the tag in an array with proper indention.
$array[] = str_repeat($indenter, $level).substr($source, $started_at, $tag_lenght);
// If this was a starting tag, increase the indent level after this tag.
if ($tag_level === 1) {
$level++;
}
// if it was a self closing tag, dont do shit.
}
// Were out of the tag.
// If next letter exists...
if (($pt+1) < $source_len) {
// ... and its not an "<".
if ($source{$pt+1} !== '<') {
$started_at = $pt+1;
// Iterate through the source until the start of new tag or until we reach the end of file.
while ($source{$pt} !== '<' && $pt < $source_len) {
$pt++;
}
// If we found a "<" (we didnt find the end of file)
if ($source{$pt} === '<') {
$tag_lenght = $pt-$started_at;
// Place the stuff in an array with proper indention.
$array[] = str_repeat($indenter, $level).substr($source, $started_at, $tag_lenght);
}
// If the next tag is "<", just advance pointer and let the tag indenter take care of it.
} else {
$pt++;
}
// If the next letter doesnt exist... Were done... well, almost..
} else {
break;
}
}
// Replace old source with the new one we just collected into our array.
$source = implode($array, "\n");
// return $source;
}
?>
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