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annotate SrvTxtUtils.py @ 490:6f116b86a226 elementtree

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more new template stuff. moved ImageFile index method to SrvTxtUtils
author casties
date Mon, 29 Aug 2011 16:39:50 +0200
parents 19bd41d95f62
children c55e376be01b
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1 """Utility methods for handling XML, reading HTTP, etc"""
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2
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3 from App.ImageFile import ImageFile
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4 from App.Common import rfc1123_date
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5
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6 import sys
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7 import os
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8 import stat
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9 import urllib
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10 import urllib2
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11 import logging
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12
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13
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14 srvTxtUtilsVersion = "1.3"
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15
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16 def getInt(number, default=0):
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17 """returns always an int (0 in case of problems)"""
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18 try:
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19 return int(number)
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20 except:
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21 return int(default)
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22
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23 def getAt(array, idx, default=None):
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24 """returns element idx from array or default (in case of problems)"""
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25 try:
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26 return array[idx]
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27 except:
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28 return default
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29
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30 def getText(node, recursive=0):
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31 """returns all text content of a node and its subnodes"""
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32 if node is None:
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33 return ''
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34
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35 # ElementTree:
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36 text = node.text or ''
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37 for e in node:
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38 if recursive:
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39 text += getText(e)
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40 else:
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41 text += e.text or ''
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42 if e.tail:
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43 text += e.tail
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44
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45 # 4Suite:
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46 #nodelist=node.childNodes
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47 #text = ""
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48 #for n in nodelist:
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49 # if n.nodeType == node.TEXT_NODE:
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50 # text = text + n.data
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51
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52 return text
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53
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54
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55
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56 def getHttpData(url, data=None, num_tries=3, timeout=10):
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57 """returns result from url+data HTTP request"""
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58 # we do GET (by appending data to url)
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59 if isinstance(data, str) or isinstance(data, unicode):
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60 # if data is string then append
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61 url = "%s?%s"%(url,data)
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62 elif isinstance(data, dict) or isinstance(data, list) or isinstance(data, tuple):
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63 # urlencode
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64 url = "%s?%s"%(url,urllib.urlencode(data))
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65
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66 response = None
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67 errmsg = None
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68 for cnt in range(num_tries):
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69 try:
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70 logging.debug("getHttpData(#%s %ss) url=%s"%(cnt+1,timeout,url))
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71 if sys.version_info < (2, 6):
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72 # set timeout on socket -- ugly :-(
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73 import socket
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74 socket.setdefaulttimeout(float(timeout))
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75 response = urllib2.urlopen(url)
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76 else:
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77 # timeout as parameter
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78 response = urllib2.urlopen(url,timeout=float(timeout))
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79 # check result?
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80 break
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81 except urllib2.HTTPError, e:
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82 logging.error("getHttpData: HTTP error(%s): %s"%(e.code,e))
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83 errmsg = str(e)
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84 # stop trying
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85 break
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86 except urllib2.URLError, e:
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87 logging.error("getHttpData: URLLIB error(%s): %s"%(e.reason,e))
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88 errmsg = str(e)
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89 # stop trying
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90 #break
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91
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92 if response is not None:
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93 data = response.read()
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94 response.close()
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95 return data
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96
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97 raise IOError("ERROR fetching HTTP data from %s: %s"%(url,errmsg))
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98 #return None
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100
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101 def refreshingImageFileIndexHtml(self, REQUEST, RESPONSE):
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102 """index_html method for App.ImageFile that updates the file info for each request."""
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103 stat_info = os.stat(self.path)
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104 self.size = stat_info[stat.ST_SIZE]
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105 self.lmt = float(stat_info[stat.ST_MTIME]) or time.time()
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106 self.lmh = rfc1123_date(self.lmt)
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107 # call original method
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108 return ImageFile.index_html(self, REQUEST, RESPONSE)
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109