316 lines
10 KiB
Python
316 lines
10 KiB
Python
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"""
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pretty debug errors
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(part of web.py)
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adapted from Django <djangoproject.com>
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Copyright (c) 2005, the Lawrence Journal-World
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Used under the modified BSD license:
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http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5
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"""
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__all__ = ["debugerror", "djangoerror"]
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import sys, urlparse, pprint
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from net import websafe
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from template import Template
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import webapi as web
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import os, os.path
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whereami = os.path.join(os.getcwd(), __file__)
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whereami = os.path.sep.join(whereami.split(os.path.sep)[:-1])
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djangoerror_t = """\
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$def with (exception_type, exception_value, frames)
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<meta name="robots" content="NONE,NOARCHIVE" />
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<title>$exception_type at $ctx.path</title>
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<style type="text/css">
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html * { padding:0; margin:0; }
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body * { padding:10px 20px; }
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body * * { padding:0; }
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body { font:small sans-serif; }
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body>div { border-bottom:1px solid #ddd; }
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h1 { font-weight:normal; }
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h2 { margin-bottom:.8em; }
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h2 span { font-size:80%; color:#666; font-weight:normal; }
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h3 { margin:1em 0 .5em 0; }
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h4 { margin:0 0 .5em 0; font-weight: normal; }
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table {
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border:1px solid #ccc; border-collapse: collapse; background:white; }
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tbody td, tbody th { vertical-align:top; padding:2px 3px; }
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thead th {
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padding:1px 6px 1px 3px; background:#fefefe; text-align:left;
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font-weight:normal; font-size:11px; border:1px solid #ddd; }
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tbody th { text-align:right; color:#666; padding-right:.5em; }
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table.vars { margin:5px 0 2px 40px; }
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table.vars td, table.req td { font-family:monospace; }
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table td.code { width:100%;}
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table td.code div { overflow:hidden; }
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table.source th { color:#666; }
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table.source td {
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font-family:monospace; white-space:pre; border-bottom:1px solid #eee; }
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ul.traceback { list-style-type:none; }
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ul.traceback li.frame { margin-bottom:1em; }
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div.context { margin: 10px 0; }
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div.context ol {
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padding-left:30px; margin:0 10px; list-style-position: inside; }
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div.context ol li {
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font-family:monospace; white-space:pre; color:#666; cursor:pointer; }
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div.context ol.context-line li { color:black; background-color:#ccc; }
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div.context ol.context-line li span { float: right; }
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div.commands { margin-left: 40px; }
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div.commands a { color:black; text-decoration:none; }
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#summary { background: #ffc; }
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#summary h2 { font-weight: normal; color: #666; }
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#explanation { background:#eee; }
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#template, #template-not-exist { background:#f6f6f6; }
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#template-not-exist ul { margin: 0 0 0 20px; }
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#traceback { background:#eee; }
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#requestinfo { background:#f6f6f6; padding-left:120px; }
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#summary table { border:none; background:transparent; }
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#requestinfo h2, #requestinfo h3 { position:relative; margin-left:-100px; }
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#requestinfo h3 { margin-bottom:-1em; }
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.error { background: #ffc; }
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.specific { color:#cc3300; font-weight:bold; }
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</style>
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<script type="text/javascript">
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//<!--
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function getElementsByClassName(oElm, strTagName, strClassName){
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// Written by Jonathan Snook, http://www.snook.ca/jon;
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// Add-ons by Robert Nyman, http://www.robertnyman.com
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var arrElements = (strTagName == "*" && document.all)? document.all :
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oElm.getElementsByTagName(strTagName);
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var arrReturnElements = new Array();
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strClassName = strClassName.replace(/\-/g, "\\-");
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var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
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var oElement;
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for(var i=0; i<arrElements.length; i++){
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oElement = arrElements[i];
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if(oRegExp.test(oElement.className)){
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arrReturnElements.push(oElement);
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}
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}
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return (arrReturnElements)
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}
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function hideAll(elems) {
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for (var e = 0; e < elems.length; e++) {
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elems[e].style.display = 'none';
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}
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}
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window.onload = function() {
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hideAll(getElementsByClassName(document, 'table', 'vars'));
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hideAll(getElementsByClassName(document, 'ol', 'pre-context'));
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hideAll(getElementsByClassName(document, 'ol', 'post-context'));
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}
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function toggle() {
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for (var i = 0; i < arguments.length; i++) {
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var e = document.getElementById(arguments[i]);
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if (e) {
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e.style.display = e.style.display == 'none' ? 'block' : 'none';
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}
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}
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return false;
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}
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function varToggle(link, id) {
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toggle('v' + id);
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var s = link.getElementsByTagName('span')[0];
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var uarr = String.fromCharCode(0x25b6);
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var darr = String.fromCharCode(0x25bc);
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s.innerHTML = s.innerHTML == uarr ? darr : uarr;
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return false;
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}
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//-->
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</script>
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</head>
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<body>
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<div id="summary">
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<h1>$exception_type at $ctx.path</h1>
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<h2>$exception_value</h2>
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<table><tr>
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<th>Python</th>
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<td>$frames[0].filename in $frames[0].function, line $frames[0].lineno</td>
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</tr><tr>
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<th>Web</th>
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<td>$ctx.method $ctx.home$ctx.path</td>
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</tr></table>
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</div>
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<div id="traceback">
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<h2>Traceback <span>(innermost first)</span></h2>
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<ul class="traceback">
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$for frame in frames:
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<li class="frame">
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<code>$frame.filename</code> in <code>$frame.function</code>
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$if frame.context_line:
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<div class="context" id="c$frame.id">
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$if frame.pre_context:
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<ol start="$frame.pre_context_lineno" class="pre-context" id="pre$frame.id">
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$for line in frame.pre_context:
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<li onclick="toggle('pre$frame.id', 'post$frame.id')">$line</li>
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</ol>
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<ol start="$frame.lineno" class="context-line"><li onclick="toggle('pre$frame.id', 'post$frame.id')">$frame.context_line <span>...</span></li></ol>
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$if frame.post_context:
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<ol start='${frame.lineno + 1}' class="post-context" id="post$frame.id">
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$for line in frame.post_context:
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<li onclick="toggle('pre$frame.id', 'post$frame.id')">$line</li>
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</ol>
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</div>
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$if frame.vars:
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<div class="commands">
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<a href='#' onclick="return varToggle(this, '$frame.id')"><span>▶</span> Local vars</a>
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$# $inspect.formatargvalues(*inspect.getargvalues(frame['tb'].tb_frame))
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</div>
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$:dicttable(frame.vars, kls='vars', id=('v' + str(frame.id)))
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</li>
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</ul>
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</div>
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<div id="requestinfo">
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$if ctx.output or ctx.headers:
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<h2>Response so far</h2>
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<h3>HEADERS</h3>
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<p class="req"><code>
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$for kv in ctx.headers:
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$kv[0]: $kv[1]<br />
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$else:
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[no headers]
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</code></p>
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<h3>BODY</h3>
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<p class="req" style="padding-bottom: 2em"><code>
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$ctx.output
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</code></p>
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<h2>Request information</h2>
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<h3>INPUT</h3>
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$:dicttable(web.input())
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<h3 id="cookie-info">COOKIES</h3>
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$:dicttable(web.cookies())
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<h3 id="meta-info">META</h3>
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$ newctx = []
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$# ) and (k not in ['env', 'output', 'headers', 'environ', 'status', 'db_execute']):
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$for k, v in ctx.iteritems():
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$if not k.startswith('_') and (k in x):
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$newctx.append(kv)
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$:dicttable(dict(newctx))
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<h3 id="meta-info">ENVIRONMENT</h3>
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$:dicttable(ctx.env)
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</div>
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<div id="explanation">
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<p>
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You're seeing this error because you have <code>web.internalerror</code>
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set to <code>web.debugerror</code>. Change that if you want a different one.
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</p>
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</div>
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</body>
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</html>
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"""
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dicttable_t = r"""$def with (d, kls='req', id=None)
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$if d:
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<table class="$kls"\
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$if id: id="$id"\
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><thead><tr><th>Variable</th><th>Value</th></tr></thead>
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<tbody>
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$ temp = d.items()
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$temp.sort()
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$for kv in temp:
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<tr><td>$kv[0]</td><td class="code"><div>$prettify(kv[1])</div></td></tr>
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</tbody>
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</table>
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$else:
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<p>No data.</p>
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"""
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dicttable_r = Template(dicttable_t, filter=websafe)
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djangoerror_r = Template(djangoerror_t, filter=websafe)
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def djangoerror():
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def _get_lines_from_file(filename, lineno, context_lines):
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"""
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Returns context_lines before and after lineno from file.
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Returns (pre_context_lineno, pre_context, context_line, post_context).
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"""
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try:
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source = open(filename).readlines()
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lower_bound = max(0, lineno - context_lines)
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upper_bound = lineno + context_lines
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pre_context = \
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[line.strip('\n') for line in source[lower_bound:lineno]]
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context_line = source[lineno].strip('\n')
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post_context = \
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[line.strip('\n') for line in source[lineno + 1:upper_bound]]
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return lower_bound, pre_context, context_line, post_context
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except (OSError, IOError):
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return None, [], None, []
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exception_type, exception_value, tback = sys.exc_info()
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frames = []
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while tback is not None:
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filename = tback.tb_frame.f_code.co_filename
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function = tback.tb_frame.f_code.co_name
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lineno = tback.tb_lineno - 1
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pre_context_lineno, pre_context, context_line, post_context = \
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_get_lines_from_file(filename, lineno, 7)
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frames.append(web.storage({
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'tback': tback,
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'filename': filename,
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'function': function,
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'lineno': lineno,
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'vars': tback.tb_frame.f_locals,
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'id': id(tback),
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'pre_context': pre_context,
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'context_line': context_line,
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'post_context': post_context,
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'pre_context_lineno': pre_context_lineno,
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}))
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tback = tback.tb_next
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frames.reverse()
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urljoin = urlparse.urljoin
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def prettify(x):
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try:
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out = pprint.pformat(x)
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except Exception, e:
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out = '[could not display: <' + e.__class__.__name__ + \
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': '+str(e)+'>]'
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return out
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dt = dicttable_r
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dt.globals = {'prettify': prettify}
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t = djangoerror_r
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t.globals = {'ctx': web.ctx, 'web':web, 'dicttable':dt, 'dict':dict, 'str':str}
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return t(exception_type, exception_value, frames)
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def debugerror():
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"""
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A replacement for `internalerror` that presents a nice page with lots
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of debug information for the programmer.
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(Based on the beautiful 500 page from [Django](http://djangoproject.com/),
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designed by [Wilson Miner](http://wilsonminer.com/).)
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"""
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web.ctx.headers = [('Content-Type', 'text/html')]
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web.ctx.output = djangoerror()
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if __name__ == "__main__":
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urls = (
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'/', 'index'
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)
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class index:
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def GET(self):
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thisdoesnotexist
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web.internalerror = web.debugerror
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web.run(urls)
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