Sbgodin/HtmGem
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WIP

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This commit is contained in:
Christophe HENRY 2021-03-05 15:55:57 +01:00
parent f4500fbc4f
commit 376c4ed977
2 changed files with 72 additions and 60 deletions
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6
TODO
View File

@ -13,3 +13,9 @@
* Manage anchors
* Page menu on upper and lower sides: [parent dir] [root dir] [inline images] [raw response] [view cert]
* Check unicode capability
* Manage different type of carriage return: CR CR/LF LF
* Do not output an empty line for the last carriage return of the document
* Test on a shared hosting
* Be able to navigate (custom the links) when using htmgen.php?url=…
* Text localisation
* Search all cases where a narrow no-break space would apply

126
htmgem.php
View File

@ -13,35 +13,16 @@ else
$GMI_DIR = $_SERVER['DOCUMENT_ROOT'];
$filePath = $GMI_DIR.$url;
$fileContent = @file_get_contents($filePath);
if (!$fileContent) {
$fileContents = @file_get_contents($filePath);
if (!$fileContents) {
http_response_code(404);
die("404: $url");
}
$fileLines = preg_split("/\n/", $fileContent);
# Removes the Byte Order Mark
$fileContents = preg_replace("/\xEF\xBB\xBF/", "", $fileContents);
ob_start();
echo(<<<EOL
<!DOCTYPE html>
<html lang="fr">
<head>
<title>HTM Gem</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- link type="text/css" rel="StyleSheet" href="/htmgem.css" -->
<style>
EOL
);
include("htmgem.css");
echo(<<<EOL
</style>
</head>
<body>
EOL);
$fileLines = preg_split("/\n/", $fileContents);
/**
* Replaces markups things like __underlined__ to <u>underlined</u>.
@ -73,16 +54,21 @@ function addTextAttributes(&$line) {
markupPreg("~~", "del", $line);
}
define("NARROW_NO_BREAK_SPACE", "&#8239;");
/**
* Escapes the HTML entities yet contained in the Gemtext, keeps multiple spaces.
* Prepares the raw text to be displayed in HTML environment:
* * Escapes the HTML entities yet contained in the Gemtext.
* * Puts thin unbrakable spaces before some characters.
* @param $text1, $text2 texts to process
*/
function htmlEscape(&$text) {
function htmlPrepare(&$text) {
$text = htmlspecialchars($text, ENT_HTML5|ENT_NOQUOTES, "UTF-8", false);
$text = mb_ereg_replace("\ ([?!:;»€$])", "&#8239;\\1", $text); # Espace fine insécable
$text = mb_ereg_replace("([«])\ ", "\\1&#8239;", $text); # Espace fine insécable
$text = mb_ereg_replace("\ ([?!:;»€$])", NARROW_NO_BREAK_SPACE."\\1", $text);
$text = mb_ereg_replace("([«])\ ", "\\1".NARROW_NO_BREAK_SPACE, $text); # Espace fine insécable
}
ob_start();
$mode = null;
$mode_textAttributes = true;
foreach ($fileLines as $line) {
@ -95,77 +81,73 @@ foreach ($fileLines as $line) {
$line3 = substr($line, 0, 3);
if (is_null($mode)) {
if (empty($line)) {
print("<p>&nbsp;</p>\n");
} elseif (b"\xEF\xBB\xBF" == $line3) {
# Removes the Byte Order Mark
$line = substr($line, 3);
continue;
echo "<p>&nbsp;</p>\n";
} elseif ("#" == $line1) {
preg_match("/^(#{1,3})\s*(.*)/", $line, $sharps);
$h_level = strlen($sharps[1]);
$text = $sharps[2];
htmlEscape($text);
htmlPrepare($text);
switch ($h_level) {
case 1: print("<h1>".$text."</h1>\n"); break;
case 2: print("<h2>".$text."</h2>\n"); break;
case 3: print("<h3>".$text."</h3>\n"); break;
case 1: echo "<h1>".$text."</h1>\n"; break;
case 2: echo "<h2>".$text."</h2>\n"; break;
case 3: echo "<h3>".$text."</h3>\n"; break;
}
} elseif ("=>" == $line2) {
preg_match("/^=>\s*([^\s]+)(\s+(.*))?$/", $line, $linkParts);
$url_link = $linkParts[1];
$url_label = $linkParts[2];
$url_label = @$linkParts[2];
if (empty(trim($url_label))) {
$url_label = $url_link;
} else {
// the label is humain-made, apply formatting
htmlEscape($url_label);
htmlPrepare($url_label);
}
print("<p><a href='".$url_link."'>".$url_label."</a></p>\n");
echo "<p><a href='".$url_link."'>".$url_label."</a></p>\n";
} elseif ('"""' == $line3) {
$mode_textAttributes = !$mode_textAttributes;
} elseif ("```" == $line3) {
$mode="pre";
print("<pre>\n");
echo "<pre>\n";
} elseif (">" == $line1) {
$mode = "quote";
preg_match("/^>\s*(.*)$/", $line, $quoteParts);
$quote = $quoteParts[1];
print("<blockquote>\n");
echo "<blockquote>\n";
if (empty($quote))
print("<p>&nbsp;</p>\n");
echo "<p>&nbsp;</p>\n";
else
htmlEscape($quote);
htmlPrepare($quote);
if ($mode_textAttributes) addTextAttributes($line);
print("<p>".$quote."</p>\n");
echo "<p>".$quote."</p>\n";
} elseif ("*" == $line1 && "**" != $line2) {
$mode = "ul";
print("<ul>\n");
echo "<ul>\n";
continue;
} else {
htmlEscape($line);
htmlPrepare($line);
if ($mode_textAttributes) addTextAttributes($line);
print("<p>$line</p>\n");
echo "<p>$line</p>\n";
}
} elseif ("pre"==$mode) {
if ("```" == $line3) {
$mode=null;
print("</pre>\n");
echo "</pre>\n";
} else {
htmlEscape($line);
print($line."\n");
htmlPrepare($line);
echo $line."\n";
}
} elseif ("quote"==$mode) {
if (">" == $line1) {
preg_match("/^>\s*(.*)$/", $line, $quoteParts);
$quote = $quoteParts[1];
if (empty($quote))
print("<p>&nbsp;</p>\n");
echo "<p>&nbsp;</p>\n";
else
htmlEscape($quote);
print("<p>".$quote."</p>\n");
htmlPrepare($quote);
echo "<p>".$quote."</p>\n";
} else {
$mode=null;
print("</blockquote>\n");
echo "</blockquote>\n";
continue;
}
} elseif ("ul"==$mode) {
@ -173,21 +155,45 @@ foreach ($fileLines as $line) {
preg_match("/^\*\s*(.*)$/", $line, $ulParts);
$li = $ulParts[1];
if (empty($li))
print("<li>&nbsp;\n");
echo "<li>&nbsp;\n";
else
htmlEscape($li);
htmlPrepare($li);
addTextAttributes($li);
print("<li>".$li."\n");
echo "<li>".$li."\n";
} else {
$mode = null;
print("</ul>\n");
echo "</ul>\n";
continue;
}
}
break; // Do one loop, except if required
break;
}
}
$body = ob_get_contents();
ob_clean();
# Gets the page title: the first occurrence with # at the line start
mb_ereg("#\s*([^\n]+)\n", $fileContents, $matches);
$page_title = @$matches[1];
# <!-- link type="text/css" rel="StyleSheet" href="/htmgem.css" -->
echo <<<EOL
<!DOCTYPE html>
<html lang="fr">
<head>
<title>$page_title</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style>
EOL;
include("htmgem.css");
echo <<<EOL
</style>
</head>
<body>
EOL;
echo "\n".$body;
echo "</body>\n</html>\n";
ob_end_flush();
?>