annotate MoinMoin/stats/pagesize.py @ 4176:85884c67228d

Replaced/removed calls to request.emit_http_headers
author Florian Krupicka <florian.krupicka@googlemail.com>
date Wed, 18 Jun 2008 00:28:07 +0200
parents bb2e053067fb
children fc20a076aad0
rev   line source
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - Pagesize Statistics
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4
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5 This macro creates a bar graph of page size classes.
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6
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7 @copyright: 2002-2004 Juergen Hermann <jh@web.de>
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8 @license: GNU GPL, see COPYING for details.
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9 """
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10
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11 _debug = 0
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12
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13 from MoinMoin import wikiutil
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14 from MoinMoin.Page import Page
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15
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16
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17 def linkto(pagename, request, params=''):
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18 _ = request.getText
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19
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20 if not request.cfg.chart_options:
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21 return (request.formatter.sysmsg(1) +
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22 request.formatter.text(_('Charts are not available!')) +
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23 request.formatter.sysmsg(0))
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24
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25 if _debug:
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26 return draw(pagename, request)
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27
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28 page = Page(request, pagename)
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29
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30 # Create escaped query string from dict and params
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31 querystr = {'action': 'chart', 'type': 'pagesize'}
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32 querystr = wikiutil.makeQueryString(querystr)
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33 querystr = wikiutil.escape(querystr)
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34 if params:
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35 querystr += '&amp;' + params
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36
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37 data = {'url': page.url(request, querystr)}
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38 data.update(request.cfg.chart_options)
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39 result = ('<img src="%(url)s" width="%(width)d" height="%(height)d"'
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40 ' alt="pagesize chart">') % data
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41 return result
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42
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43
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44 def _slice(data, lo, hi):
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45 data = data[:]
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46 if lo: data[:lo] = [None] * lo
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47 if hi < len(data):
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48 data[hi:] = [None] * (len(data)-hi)
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49 return data
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50
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51
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52 def draw(pagename, request):
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53 import bisect, shutil, cStringIO
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54 from MoinMoin.stats.chart import Chart, ChartData, Color
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55
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56 _ = request.getText
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57 style = Chart.GDC_3DBAR
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58
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59 # get data
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60 pages = request.rootpage.getPageDict()
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61 sizes = []
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62 for name, page in pages.items():
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63 sizes.append((page.size(), name.encode('iso-8859-1', 'replace')) ) # gdchart does no utf-8
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64 sizes.sort()
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65
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66 upper_bound = sizes[-1][0]
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67 bounds = [s*128 for s in range(1, 9)]
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68 if upper_bound >= 1024:
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69 bounds.extend([s*1024 for s in range(2, 9)])
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70 if upper_bound >= 8192:
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71 bounds.extend([s*8192 for s in range(2, 9)])
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72 if upper_bound >= 65536:
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73 bounds.extend([s*65536 for s in range(2, 9)])
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74
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75 data = [None] * len(bounds)
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76 for size, name in sizes:
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77 idx = bisect.bisect(bounds, size)
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78 ##idx = int((size / upper_bound) * classes)
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79 data[idx] = (data[idx] or 0) + 1
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80
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81 labels = ["%d" % b for b in bounds]
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82
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83 # give us a chance to develop this
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84 if _debug:
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85 return "<p>data = %s</p>" % \
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86 '<br>'.join([wikiutil.escape(repr(x)) for x in [labels, data]])
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87
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88 # create image
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89 image = cStringIO.StringIO()
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90 c = Chart()
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91 ##c.addData(ChartData(data, 'magenta'))
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92 c.addData(ChartData(_slice(data, 0, 7), 'blue'))
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93 if upper_bound >= 1024:
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94 c.addData(ChartData(_slice(data, 7, 14), 'green'))
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95 if upper_bound >= 8192:
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96 c.addData(ChartData(_slice(data, 14, 21), 'red'))
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97 if upper_bound >= 65536:
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98 c.addData(ChartData(_slice(data, 21, 28), 'magenta'))
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99 title = ''
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100 if request.cfg.sitename: title = "%s: " % request.cfg.sitename
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101 title = title + _('Page Size Distribution')
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102 c.option(
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103 annotation=(bisect.bisect(bounds, upper_bound), Color('black'), "%d %s" % sizes[-1]),
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104 title=title.encode('iso-8859-1', 'replace'), # gdchart can't do utf-8
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105 xtitle=_('page size upper bound [bytes]').encode('iso-8859-1', 'replace'),
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106 ytitle=_('# of pages of this size').encode('iso-8859-1', 'replace'),
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107 title_font=c.GDC_GIANT,
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108 threed_depth=2.0,
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109 requested_yinterval=1.0,
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110 stack_type=c.GDC_STACK_LAYER,
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111 )
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112 c.draw(style,
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113 (request.cfg.chart_options['width'], request.cfg.chart_options['height']),
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114 image, labels)
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115
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116 request.response.content_type = 'image/gif'
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117 request.response.content_length = len(image.getvalue())
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118
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119 # copy the image
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120 image.reset()
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121 shutil.copyfileobj(image, request, 8192)
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122