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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2005 Edgewall Software
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4 # Copyright (C) 2005 Christian Boos <cboos@bct-technology.com>
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5 # Copyright (C) 2005 Christopher Lenz <cmlenz@gmx.de>
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6 # All rights reserved.
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7 #
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8 # This software is licensed as described in the file COPYING, which
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9 # you should have received as part of this distribution. The terms
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10 # are also available at http://trac.edgewall.com/license.html.
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11 #
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12 # This software consists of voluntary contributions made by many
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13 # individuals. For the exact contribution history, see the revision
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14 # history and logs, available at http://projects.edgewall.com/trac/.
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15 #
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16 # Author: Christian Boos <cboos@bct-technology.com>
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17 # Christopher Lenz <cmlenz@gmx.de>
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18
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19 import re
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20
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21 from trac.core import *
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22 from trac.config import Option
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23 from trac.mimeview.api import IHTMLPreviewRenderer, content_to_unicode
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24 from trac.util import NaivePopen
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25 from trac.util.markup import Deuglifier
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26
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27 __all__ = ['PHPRenderer']
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28
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29 php_types = ('text/x-php', 'application/x-httpd-php',
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30 'application/x-httpd-php4', 'application/x-httpd-php1')
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31
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32
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33 class PhpDeuglifier(Deuglifier):
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34
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35 def format(self, indata):
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36 # The PHP highlighter produces the end-span tags on the next line
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37 # instead of the line they actually apply to, which causes
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38 # Trac to produce lots of (useless) open-and-immediately-close
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39 # spans beginning each line. This tries to curtail by bubbling
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40 # the first span after a set of 1+ "<br />" to before them.
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41 r_fixeol = re.compile(r"((?:<br />)+)(</(?:font|span)>)")
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42 indata = r_fixeol.sub(lambda m: m.group(2) + m.group(1), indata)
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43
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44 # Now call superclass implementation that handles the dirty work
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45 # of applying css classes.
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46 return Deuglifier.format(self, indata)
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47
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48 def rules(cls):
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49 colors = dict(comment='FF8000', lang='0000BB', keyword='007700',
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50 string='DD0000')
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51 # rules check for <font> for PHP 4 or <span> for PHP 5
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52 color_rules = [
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53 r'(?P<%s><(?:font color="|span style="color: )#%s">)' % c
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54 for c in colors.items()
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55 ]
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56 return color_rules + [ r'(?P<font><font.*?>)', r'(?P<endfont></font>)' ]
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57 rules = classmethod(rules)
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58
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59 class PHPRenderer(Component):
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60 """
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61 Syntax highlighting using the PHP executable if available.
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62 """
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63
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64 implements(IHTMLPreviewRenderer)
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65
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66 path = Option('mimeviewer', 'php_path', 'php',
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67 """Path to the PHP executable (''since 0.9'').""")
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68
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69 # IHTMLPreviewRenderer methods
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70
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71 def get_quality_ratio(self, mimetype):
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72 if mimetype in php_types:
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73 return 4
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74 return 0
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75
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76 def render(self, req, mimetype, content, filename=None, rev=None):
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77 cmdline = self.config.get('mimeviewer', 'php_path')
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78 # -n to ignore php.ini so we're using default colors
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79 cmdline += ' -sn'
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80 self.env.log.debug("PHP command line: %s" % cmdline)
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81
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82 content = content_to_unicode(self.env, content, mimetype)
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83 content = content.encode('utf-8')
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84 np = NaivePopen(cmdline, content, capturestderr=1)
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85 if np.errorlevel or np.err:
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86 err = 'Running (%s) failed: %s, %s.' % (cmdline, np.errorlevel,
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87 np.err)
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88 raise Exception, err
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89 odata = ''.join(np.out.splitlines()[1:-2])
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90 if odata.startswith('X-Powered-By'):
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91 raise TracError, 'You appear to be using the PHP CGI binary. ' \
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92 'Trac requires the CLI version for syntax ' \
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93 'highlighting.'
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94
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95 html = PhpDeuglifier().format(odata.decode('utf-8'))
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96 for line in html.split('<br />'):
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97 # PHP generates _way_ too many non-breaking spaces...
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98 # We don't need them anyway, so replace them by normal spaces
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99 yield line.replace(' ', ' ')
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