import os
from WebUtils.Funcs import htmlEncode
from MiscUtils import StringIO
def encodeWithIndentation(html):
html = htmlEncode(html).replace(' ', ' ')
return html.replace('\t', ' ')
def validateHTML(html):
"""
Validate the input using Web Design Group's HTML validator
available at http://www.htmlhelp.com/tools/validator/
Make sure you install the offline validator (called
"validate") which can be called from the command-line. The
"validate" script must be in your path.
If no errors are found, an empty string is returned.
Otherwise, the HTML with the error messages is returned.
"""
input, output = os.popen4('validate')
input.write(html)
input.close()
out = output.readlines()
output.close()
errorLines = {}
for line in out:
if line[0:5] == 'Line ':
i = line.find(',')
if i != -1:
linenum = int(line[5:i])
errorLines[linenum] = line
# Be quiet if all's well
if not errorLines:
return ''
result = StringIO()
result.write('<table style="background-color: #ffffff"><tr><td colspan="2">\n')
result.write("<pre>%s</pre>" % "".join(out))
result.write('</td></tr>\n')
goodColors = ['#d0d0d0', '#e0e0e0']
badColor = '#ffd0d0'
lines = html.splitlines(1)
i = 1
for line in lines:
if errorLines.has_key(i):
result.write('<tr style="background-color: %s">'
'<td rowspan="2">%d</td><td>%s</td></tr>\n'
% (badColor, i, encodeWithIndentation(errorLines[i])))
result.write('<tr style="background-color: %s">'
'<td>%s</td></tr>\n'
% (badColor, encodeWithIndentation(line)))
else:
color = goodColors[i % 2]
result.write('<tr style="background-color: %s">'
'<td>%d</td><td>%s</td></tr>\n'
% (color, i, encodeWithIndentation(line)))
i += 1
result.write('</table>\n')
return result.getvalue()
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