/**
* Perform character conversion.
*
* @param string $test
* Text to be parsed.
* @param array $characters_to_convert
* Array of ASCII characters to convert.
* @return string
* The result of the conversion.
*/
function convert_characters($text, $characters_to_convert)
{
if ($characters_to_convert == NULL || count($characters_to_convert) < 1) {
// do nothing
return $text;
}
// get ascii to unicode mappings
$unicode_map = unicode_conversion_map();
foreach ($characters_to_convert as $ascii_string) {
$unicode_strings[] = $unicode_map[$ascii_string];
}
$tokens = _TokenizeHTML($text);
$result = '';
$in_pre = 0;
// Keep track of when we're inside <pre> or <code> tags
foreach ($tokens as $cur_token) {
if ($cur_token[0] == "tag") {
// Don't mess with text inside tags, <pre> blocks, or <code> blocks
$result .= $cur_token[1];
// Get the tags to skip regex from SmartyPants
if (preg_match(SMARTYPANTS_TAGS_TO_SKIP, $cur_token[1], $matches)) {
$in_pre = isset($matches[1]) && $matches[1] == '/' ? 0 : 1;
}
} else {
$t = $cur_token[1];
if ($in_pre == 0) {
$t = ProcessEscapes($t);
$t = str_replace($characters_to_convert, $unicode_strings, $t);
}
$result .= $t;
}
}
return $result;
}
function _apply_search_replace($str = '', $search, $replace)
{
global $TMPL;
if ($str == '') {
$str = $TMPL->tagdata;
}
$tokens = _TokenizeHTML($str);
$result = '';
$in_skipped_tag = false;
foreach ($tokens as $token) {
if ($token[0] == 'tag') {
$result .= $token[1];
if (preg_match('_' . '_', $token[1], $matches)) {
$in_skipped_tag = isset($matches[1]) && $matches[1] == '/' ? false : true;
}
} else {
if ($in_skipped_tag) {
$result .= $token[1];
} else {
$result .= preg_replace($search, $replace, $token[1]);
}
}
}
return $result;
}
/**
* Stylable capitals
*
* Wraps multiple capital letters in ``<span class="caps">``
* so they can be styled with CSS.
*
* Uses the smartypants tokenizer to not screw with HTML or with tags it shouldn't.
*/
public static function caps($text)
{
// If _TokenizeHTML from Smartypants is not present, don't do anything.
if (!function_exists('_TokenizeHTML')) {
return $text;
}
$tokens = _TokenizeHTML($text);
$result = array();
$in_skipped_tag = false;
$cap_finder = "/(\n (\\b[A-Z\\d]* # Group 2: Any amount of caps and digits\n [A-Z]\\d*[A-Z] # A cap string much at least include two caps (but they can have digits between them)\n [A-Z\\d]*\\b) # Any amount of caps and digits\n | (\\b[A-Z]+\\.\\s? # OR: Group 3: Some caps, followed by a '.' and an optional space\n (?:[A-Z]+\\.\\s?)+) # Followed by the same thing at least once more\n (?:\\s|\\b|\$))/x";
$tags_to_skip_regex = "/<(\\/)?(?:pre|code|kbd|script|math)[^>]*>/i";
foreach ($tokens as $token) {
if ($token[0] == "tag") {
// Don't mess with tags.
$result[] = $token[1];
$close_match = preg_match($tags_to_skip_regex, $token[1]);
if ($close_match) {
$in_skipped_tag = true;
} else {
$in_skipped_tag = false;
}
} else {
if ($in_skipped_tag) {
$result[] = $token[1];
} else {
$result[] = preg_replace_callback($cap_finder, array('Typogrify', '_cap_wrapper'), $token[1]);
}
}
}
return join("", $result);
}
function _EscapeSpecialChars($text)
{
global $g_escape_table;
$tokens = _TokenizeHTML($text);
$text = '';
# rebuild $text from the tokens
$in_pre = 0;
# Keep track of when we're inside <pre> or <code> tags.
$tags_to_skip = "!<(/?)(?:pre|code|kbd|script)[\\s>]!";
foreach ($tokens as $cur_token) {
if ($cur_token[0] == 'tag') {
$cur_token[1] = str_replace(array('*', '_'), array($g_escape_table['*'], $g_escape_table['_']), $cur_token[1]);
$text .= $cur_token[1];
} else {
$t = $cur_token[1];
if (!$in_pre) {
$t = _EncodeBackslashEscapes($t);
# $t =~ s{([a-z])/([a-z])}{$1 / $2}ig;
}
$text .= $t;
}
}
return $text;
}
function _EscapeSpecialChars($text)
{
global $md_escape_table;
$tokens = _TokenizeHTML($text);
$text = '';
# rebuild $text from the tokens
# $in_pre = 0; # Keep track of when we're inside <pre> or <code> tags.
# $tags_to_skip = "!<(/?)(?:pre|code|kbd|script|math)[\s>]!";
foreach ($tokens as $cur_token) {
if ($cur_token[0] == 'tag') {
# Within tags, encode * and _ so they don't conflict
# with their use in Markdown for italics and strong.
# We're replacing each such character with its
# corresponding MD5 checksum value; this is likely
# overkill, but it should prevent us from colliding
# with the escape values by accident.
$cur_token[1] = str_replace(array('*', '_'), array($md_escape_table['*'], $md_escape_table['_']), $cur_token[1]);
$text .= $cur_token[1];
} else {
$t = $cur_token[1];
$t = _EncodeBackslashEscapes($t);
$text .= $t;
}
}
return $text;
}
function SmartEllipses($text, $attr = NULL, $ctx = NULL)
{
# Paramaters:
$text;
# text to be parsed
$attr;
# value of the smart_ellipses="" attribute
$ctx;
# MT context object (unused)
if ($attr == NULL) {
$attr = $smartypants_attr;
}
if ($attr == 0) {
# do nothing;
return $text;
}
$tokens;
$tokens = _TokenizeHTML($text);
$result = '';
$in_pre = 0;
# Keep track of when we're inside <pre> or <code> tags
foreach ($tokens as $cur_token) {
if ($cur_token[0] == "tag") {
# Don't mess with quotes inside tags
$result .= $cur_token[1];
if (preg_match("@{$sp_tags_to_skip}@", $cur_token[1], $matches)) {
$in_pre = isset($matches[1]) && $matches[1] == '/' ? 0 : 1;
}
} else {
$t = $cur_token[1];
if (!$in_pre) {
$t = ProcessEscapes($t);
$t = EducateEllipses($t);
}
$result .= $t;
}
}
return $result;
}
/**
* space_hyphens
*
* Replaces a normal dash with em-dash between whitespaces.
*/
function typogrify_space_hyphens($text)
{
$tokens;
$tokens = _TokenizeHTML($text);
$result = '';
// Keep track of when we're inside <pre> or <code> tags.
$in_pre = 0;
foreach ($tokens as $cur_token) {
if ($cur_token[0] == "tag") {
// Don't mess with quotes inside tags.
$result .= $cur_token[1];
if (preg_match(SMARTYPANTS_TAGS_TO_SKIP, $cur_token[1], $matches)) {
$in_pre = isset($matches[1]) && $matches[1] == '/' ? 0 : 1;
}
} else {
$t = $cur_token[1];
if (!$in_pre) {
$t = preg_replace("/\\s(-{1,3})\\s/", ' — ', $t);
}
$result .= $t;
}
}
return $result;
}