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mxml/www/phplib/common.php
Michael R Sweet 989accb852 User account creation. 
Make all emails consistent.

Finalize links page.
2004-05-20 21:37:57 +00:00

682 lines
15 KiB
PHP
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<?
//
// "$Id: common.php,v 1.12 2004/05/20 21:37:57 mike Exp $"
//
// Common utility functions for PHP pages...
//
// This file should be included using "include_once"...
//
// Contents:
//
// abbreviate() - Abbreviate long strings...
// format_text() - Convert plain text to HTML...
// quote_text() - Quote a string...
// sanitize_email() - Convert an email address to something a SPAMbot
// can't read...
// sanitize_text() - Sanitize text.
// select_is_published() - Do a <select> for the "is published" field...
// show_comments() - Show comments for the given path...
// validate_email() - Validate an email address...
//
//
// 'abbreviate()' - Abbreviate long strings...
//
function // O - Abbreviated string
abbreviate($text, // I - String
$maxlen = 32) // I - Maximum length of string
{
$newtext = "";
$textlen = strlen($text);
$inelement = 0;
for ($i = 0, $len = 0; $i < $textlen && $len < $maxlen; $i ++)
switch ($text[$i])
{
case '<' :
$inelement = 1;
break;
case '>' :
if ($inelement)
$inelement = 0;
else
{
$newtext .= "&gt;";
$len ++;
}
break;
case '&' :
$len ++;
while ($i < $textlen)
{
$newtext .= $text[$i];
if ($text[$i] == ';')
break;
$i ++;
}
break;
default :
if (!$inelement)
{
$newtext .= $text[$i];
$len ++;
}
break;
}
if ($i < $textlen)
return ($newtext . "...");
else
return ($newtext);
}
//
// 'count_comments()' - Count visible comments for the given path...
//
function // O - Number of comments
count_comments($url, // I - URL for comment
$parent_id = 0) // I - Parent comment
{
$result = db_query("SELECT * FROM comment WHERE "
."url = '" . db_escape($url) ."' "
."AND parent_id = $parent_id "
."ORDER BY id");
$num_comments = 0;
while ($row = db_next($result))
{
if ($row["status"] > 0)
$num_comments ++;
$num_comments += count_comments($url, $row['id']);
}
db_free($result);
return ($num_comments);
}
//
// 'format_text()' - Convert plain text to HTML...
//
function // O - Quoted string
format_text($text) // I - Original string
{
$len = strlen($text);
$col = 0;
$list = 0;
$bold = 0;
$pre = 0;
$ftext = "<p>";
for ($i = 0; $i < $len; $i ++)
{
switch ($text[$i])
{
case '<' :
$col ++;
if (strtolower(substr($text, $i, 8)) == "<a href=" ||
strtolower(substr($text, $i, 8)) == "<a name=" ||
strtolower(substr($text, $i, 4)) == "</a>" ||
strtolower(substr($text, $i, 3)) == "<b>" ||
strtolower(substr($text, $i, 4)) == "</b>" ||
strtolower(substr($text, $i, 12)) == "<blockquote>" ||
strtolower(substr($text, $i, 13)) == "</blockquote>" ||
strtolower(substr($text, $i, 6)) == "<code>" ||
strtolower(substr($text, $i, 7)) == "</code>" ||
strtolower(substr($text, $i, 4)) == "<em>" ||
strtolower(substr($text, $i, 5)) == "</em>" ||
strtolower(substr($text, $i, 4)) == "<h1>" ||
strtolower(substr($text, $i, 5)) == "</h1>" ||
strtolower(substr($text, $i, 4)) == "<h2>" ||
strtolower(substr($text, $i, 5)) == "</h2>" ||
strtolower(substr($text, $i, 4)) == "<h3>" ||
strtolower(substr($text, $i, 5)) == "</h3>" ||
strtolower(substr($text, $i, 4)) == "<h4>" ||
strtolower(substr($text, $i, 5)) == "</h4>" ||
strtolower(substr($text, $i, 4)) == "<h5>" ||
strtolower(substr($text, $i, 5)) == "</h5>" ||
strtolower(substr($text, $i, 4)) == "<h6>" ||
strtolower(substr($text, $i, 5)) == "</h6>" ||
strtolower(substr($text, $i, 3)) == "<i>" ||
strtolower(substr($text, $i, 4)) == "</i>" ||
strtolower(substr($text, $i, 5)) == "<img " ||
strtolower(substr($text, $i, 4)) == "<li>" ||
strtolower(substr($text, $i, 5)) == "</li>" ||
strtolower(substr($text, $i, 4)) == "<ol>" ||
strtolower(substr($text, $i, 5)) == "</ol>" ||
strtolower(substr($text, $i, 3)) == "<p>" ||
strtolower(substr($text, $i, 4)) == "</p>" ||
strtolower(substr($text, $i, 5)) == "<pre>" ||
strtolower(substr($text, $i, 6)) == "</pre>" ||
strtolower(substr($text, $i, 4)) == "<tt>" ||
strtolower(substr($text, $i, 5)) == "</tt>" ||
strtolower(substr($text, $i, 3)) == "<u>" ||
strtolower(substr($text, $i, 4)) == "</u>" ||
strtolower(substr($text, $i, 4)) == "<ul>" ||
strtolower(substr($text, $i, 5)) == "</ul>")
{
while ($i < $len && $text[$i] != '>')
{
$ftext .= $text[$i];
$i ++;
}
$ftext .= ">";
}
else
$ftext .= "&lt;";
break;
case '>' :
$col ++;
$ftext .= "&gt;";
break;
case '&' :
$col ++;
$ftext .= "&amp;";
break;
case "\n" :
if (($i + 1) < $len &&
($text[$i + 1] == "\n" || $text[$i + 1] == "\r"))
{
while (($i + 1) < $len &&
($text[$i + 1] == "\n" || $text[$i + 1] == "\r"))
$i ++;
if ($pre)
{
$ftext .= "</pre>";
$pre = 0;
}
if (($i + 1) < $len && $text[$i + 1] != '-' && $list)
{
$ftext .= "\n</ul>\n<p>";
$list = 0;
}
else
$ftext .= "\n<p>";
}
else if (($i + 1) < $len &&
($text[$i + 1] == " " || $text[$i + 1] == "\t"))
{
if ($pre)
{
$ftext .= "</pre>";
$pre = 0;
}
else
$ftext .= "<br />\n";
}
else
$ftext .= "\n";
$col = 0;
break;
case "\r" :
break;
case "\t" :
if ($col == 0)
$ftext .= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
else
$ftext .= " ";
break;
case " " :
if ($col == 0 && !$pre)
{
for ($j = $i + 1; $j < $len; $j ++)
if ($text[$j] != " " && $text[$j] != "\t")
break;
if ($j < $len && $text[$j] == '%')
{
$ftext .= "\n<pre>";
$pre = 1;
}
$ftext .= "&nbsp;";
}
else if ($text[$i + 1] == " ")
$ftext .= "&nbsp;";
else
$ftext .= " ";
if ($col > 0)
$col ++;
break;
case '*' :
if ($bold)
$ftext .= "</b>";
else
$ftext .= "<b>";
$bold = 1 - $bold;
break;
case '-' :
// Possible list...
if ($col == 0)
{
if (!$list)
{
$ftext .= "\n<ul>";
$list = 1;
}
$ftext .= "\n<li>";
while (($i + 1) < $len && $text[$i + 1] == "-")
$i ++;
break;
}
$col ++;
$ftext .= $text[$i];
break;
case 'f' :
case 'h' :
if (substr($text, $i, 7) == "http://" ||
substr($text, $i, 8) == "https://" ||
substr($text, $i, 6) == "ftp://")
{
// Extract the URL and make this a link...
for ($j = $i; $j < $len; $j ++)
if ($text[$j] == " " || $text[$j] == "\n" || $text[$j] == "\r" ||
$text[$j] == "\t" || $text[$j] == "\'" || $text[$j] == "'")
break;
$count = $j - $i;
$url = substr($text, $i, $count);
$ftext .= "<a href='$url'>$url</a>";
$col += $count;
$i = $j - 1;
break;
}
default :
$col ++;
$ftext .= $text[$i];
break;
}
}
if ($bold)
$ftext .= "</b>";
if ($list)
$ftext .= "</ul>";
if ($pre)
$ftext .= "</pre>";
return ($ftext);
}
//
// 'quote_text()' - Quote a string...
//
function // O - Quoted string
quote_text($text, // I - Original string
$quote = 0) // I - Add ">" to front of message
{
$len = strlen($text);
$col = 0;
if ($quote)
$qtext = "&gt; ";
else
$qtext = "";
for ($i = 0; $i < $len; $i ++)
{
switch ($text[$i])
{
case '<' :
$col ++;
$qtext .= "&lt;";
break;
case '>' :
$col ++;
$qtext .= "&gt;";
break;
case '&' :
$col ++;
$qtext .= "&amp;";
break;
case "\n" :
if ($quote)
$qtext .= "\n&gt; ";
else
$qtext .= "<br />";
$col = 0;
break;
case "\r" :
break;
case "\t" :
if ($col == 0)
$qtext .= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
else
$qtext .= " ";
break;
case " " :
if ($col == 0 || $text[$i + 1] == " ")
$qtext .= "&nbsp;";
else if ($col > 65 && $quote)
{
$qtext .= "\n&gt; ";
$col = 0;
}
else
$qtext .= " ";
if ($col > 0)
$col ++;
break;
case 'f' :
case 'h' :
if (substr($text, $i, 7) == "http://" ||
substr($text, $i, 8) == "https://" ||
substr($text, $i, 6) == "ftp://")
{
// Extract the URL and make this a link...
for ($j = $i; $j < $len; $j ++)
if ($text[$j] == " " || $text[$j] == "\n" || $text[$j] == "\r" ||
$text[$j] == "\t" || $text[$j] == "\'" || $text[$j] == "'")
break;
$count = $j - $i;
$url = substr($text, $i, $count);
$qtext .= "<a href='$url'>$url</a>";
$col += $count;
$i = $j - 1;
break;
}
default :
$col ++;
$qtext .= $text[$i];
break;
}
}
return ($qtext);
}
//
// 'sanitize_email()' - Convert an email address to something a SPAMbot
// can't read...
//
function // O - Sanitized email
sanitize_email($email, // I - Email address
$html = 1) // I - HTML format?
{
$nemail = "";
$len = strlen($email);
for ($i = 0; $i < $len; $i ++)
{
switch ($email[$i])
{
case '@' :
if ($i > 0)
$i = $len;
else if ($html)
$nemail .= " <I>at</I> ";
else
$nemail .= " at ";
break;
case '<' :
if ($i > 0)
$i = $len;
break;
case '>' :
break;
case '&' ;
$nemail .= "&amp;";
break;
default :
$nemail .= $email[$i];
break;
}
}
return (trim($nemail));
}
//
// 'sanitize_text()' - Sanitize text.
//
function // O - Sanitized text
sanitize_text($text) // I - Original text
{
$len = strlen($text);
$word = "";
$qtext = "";
for ($i = 0; $i < $len; $i ++)
{
switch ($text[$i])
{
case "\n" :
if (!strncmp($word, "http://", 7) ||
!strncmp($word, "https://", 8) ||
!strncmp($word, "ftp://", 6))
$qtext .= "<a href='$word'>$word</a>";
else if (strchr($word, '@'))
$qtext .= sanitize_email($word);
else
$qtext .= quote_text($word);
$qtext .= "<br />";
$word = "";
break;
case "\r" :
break;
case "\t" :
case " " :
if (!strncmp($word, "http://", 7) ||
!strncmp($word, "https://", 8) ||
!strncmp($word, "ftp://", 6))
$qtext .= "<a href='$word'>$word</a>";
else if (strchr($word, '@'))
$qtext .= sanitize_email($word);
else
$qtext .= quote_text($word);
if ($word)
$qtext .= " ";
else
$qtext .= "&nbsp;";
$word = "";
break;
default :
$word .= $text[$i];
break;
}
}
if (!strncmp($word, "http://", 7) ||
!strncmp($word, "https://", 8) ||
!strncmp($word, "ftp://", 6))
$qtext .= "<a href='$word'>$word</a>";
else if (strchr($word, '@'))
$qtext .= sanitize_email($word);
else
$qtext .= quote_text($word);
return ($qtext);
}
//
// 'select_is_published()' - Do a <select> for the "is published" field...
//
function
select_is_published($is_published = 1) // I - Default state
{
print("<select name='IS_PUBLISHED'>");
if ($is_published)
{
print("<option value='0'>No</option>");
print("<option value='1' selected>Yes</option>");
}
else
{
print("<option value='0' selected>No</option>");
print("<option value='1'>Yes</option>");
}
print("</select>");
}
//
// 'show_comments()' - Show comments for the given path...
//
function // O - Number of comments
show_comments($url, // I - URL for comment
$path = "", // I - Path component
$parent_id = 0, // I - Parent comment
$heading = 3) // I - Heading level
{
global $_COOKIE, $LOGIN_LEVEL;
$result = db_query("SELECT * FROM comment WHERE "
."url = '" . db_escape($url) ."' "
."AND parent_id = $parent_id "
."ORDER BY id");
if (array_key_exists("MODPOINTS", $_COOKIE))
$modpoints = $_COOKIE["MODPOINTS"];
else
$modpoints = 5;
if ($parent_id == 0 && $modpoints > 0)
print("<P>You have $modpoints moderation points available.</P>\n");
if ($heading > 6)
$heading = 6;
$safeurl = urlencode($url);
$num_comments = 0;
$div = 0;
while ($row = db_next($result))
{
if ($row["status"] > 0)
{
if ($heading > 3 && !$div)
{
print("<div style='margin-left: 3em;'>\n");
$div = 1;
}
$num_comments ++;
$create_date = date("H:i M d, Y", $row['create_date']);
$create_user = sanitize_email($row['create_user']);
$contents = format_text($row['contents']);
print("<h$heading><a name='_USER_COMMENT_$row[id]'>From</a> "
."$create_user, $create_date (score=$row[status])</h$heading>\n"
."$contents\n");
html_start_links();
if ($LOGIN_LEVEL >= AUTH_DEVEL)
{
html_link("Edit", "${path}comment.php?e$row[id]+p$safeurl");
html_link("Delete", "${path}comment.php?d$row[id]+p$safeurl");
}
html_link("Reply", "${path}comment.php?r$row[id]+p$safeurl");
if ($modpoints > 0)
{
if ($row['status'] > 0)
html_link("Moderate Down", "${path}comment.php?md$row[id]+p$safeurl");
if ($row['status'] < 5)
html_link("Moderate Up", "${path}comment.php?mu$row[id]+p$safeurl");
}
html_end_links();
}
$num_comments += show_comments($url, $path, $row['id'], $heading + 1);
}
db_free($result);
if ($div)
print("</div>\n");
return ($num_comments);
}
//
// 'validate_email()' - Validate an email address...
//
function // O - TRUE if OK, FALSE otherwise
validate_email($email) // I - Email address
{
// Check for both "name@domain.com" and "Full Name <name@domain.com>"
return (eregi("^[a-zA-Z0-9_\.+-]+@[a-zA-Z0-9\.-]+\.[a-zA-Z]{2,4}$",
$email) ||
eregi("^[^<]*<[a-zA-Z0-9_\.+-]+@[a-zA-Z0-9\.-]+\.[a-zA-Z]{2,4}>$",
$email));
}
//
// End of "$Id: common.php,v 1.12 2004/05/20 21:37:57 mike Exp $".
//
?>
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