Mercurial > traipse_dev

annotate orpg/chat/chat_util.py @ 71:449a8900f9ac ornery-dev

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Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
author sirebral
date Thu, 20 Aug 2009 03:00:39 -0500
parents 4385a7d0efd1
children 1ed2feab0db9
rev   line source
0
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1 # utility function; see Post() in chatwnd.py
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2
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3 import re
71
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
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4 import string
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5 from orpg.orpgCore import *
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6 from orpg.tools.orpg_log import logger
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7 from orpg.tools.decorators import debugging
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8
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9 #============================================
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10 # simple_html_repair(string)
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11 #
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12 # Crude html/xml parser/verifier.
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13 # Catches many mistyped and/or malformed
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14 # html tags and prevents them from causing
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15 # issues with the chat display (see chatwnd.py)
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16 # DOES NOT catch misused but properly formated
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17 # html like <script> or <li> which are known
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18 # to cause issues with the chat display
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19 #
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20 # Created 04-25-2005 by Snowdog
71
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
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21 #=============================================
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
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22 @debugging
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23 def simple_html_repair(string):
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24 "Returns string with extra > symbols to isolate badly formated HTML"
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25 #walk though string checking positions of < and > tags.
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26 first_instance = string.find('<')
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27 if first_instance == -1: return string #no html, bail out.
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28
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29 #strip string of an instances of ">>" and "<<" recursively
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30 #while (string.find(">>") != -1):string = string.replace(">>",">")
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31 while (string.find("<<") != -1):string = string.replace("<<","<")
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32
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33 last_start = first_instance
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34 in_tag_flag = 1
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35 a = first_instance + 1
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36 while a < len(string):
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37 if string[a] == '<':
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38 if in_tag_flag == 1:
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39 #attempt to figure out best place to put missing >
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40 #search from last_start to current position
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41 at_front = 1
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42 for best_pos in range(last_start,a):
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43 if (str(string[best_pos]).isspace())and (at_front == 0):
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44 break
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45 else:
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46 at_front = 0
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47 best_pos = best_pos + 1
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48 a = best_pos
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49 string = string[:a]+">"+string[a:]
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50 in_tag_flag = 0
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51 #jump back up one character to catch the last > and reset the in_tag_flag
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52 a = a - 1
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53 else:
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54 in_tag_flag = 1
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55 last_start = a
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56
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57 if string[a] == '>':
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58 last_start = a #found a closing tag, move start of scan block up.
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59 in_tag_flag = 0
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60 if (a >= (len(string)-1))and(in_tag_flag == 1):
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61 #at end of string and need a closing tag marker
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62 string = string +">"
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63 a = a+1
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64
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65 #strip string of an instances of "<>"
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66 string = string.replace("<>","")
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67
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68 #sanity check. Count the < and > characters, if there arn't enough > chars
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69 #tack them on the end to avoid open-tag conditions
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70 diff = string.count('<') - string.count('>')
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71 if diff > 0:
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72 for d in range(1,diff):
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73 string = string+">"
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449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
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74 return string
0
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75
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76 """ Depricated! Might as well use the already made component.get('xml')
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77 def strip_unicode(txt):
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78 for i in xrange(len(txt)):
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79 if txt[i] not in string.printable:
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80 try:
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81 txt = txt.replace(txt[i], '&#' + str(ord(txt[i])) + ';')
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82 except:
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83 txt = txt.replace(txt[i], '{?}')
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84 return txt
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85 """
0
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86
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87 #================================================
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88 # strip_script_tags(string)
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89 #
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90 # removes all script tags (start and end)
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91 # 04-26-2005 Snowdog
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92 #================================================
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93 @debugging
0
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94 def strip_script_tags(string):
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95 #kill the <script> issue
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96 p = re.compile( '<(\s*)(/*)[Ss][Cc][Rr][Ii][Pp][Tt](.*?)>')
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97 string = p.sub( "<!-- script tag removed //-->", string)
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98 return string
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99
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100 #================================================
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101 # strip_li_tags(string)
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102 #
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103 # removes all li tags (start and end)
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104 # 05-13-2005
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105 #================================================
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106 @debugging
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107 def strip_li_tags(string):
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108 #kill the <li> issue
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109 string = re.sub( r'<(\s*)[Ll][Ii](.*?)>', r'<b><font color="#000000" size=+1>*</font></b> ', string)
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110 string = re.sub( r'<(/*)[Ll][Ii](.*?)>', r'<br />', string)
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111 return string
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112
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113 #================================================
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114 # strip_body_tags(string)
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115 #
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116 # removes all body tags (start and end) from messages
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117 # should not break the setting of custom background colors
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118 # through legitimate means such as the OpenRPG settings.
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119 # 07-27-2005 by mDuo13
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120 #================================================
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121 @debugging
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122 def strip_body_tags(string):
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123 bodytag_regex = re.compile(r"""<\/?body.*?>""", re.I)
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124 string = re.sub(bodytag_regex, "", string)
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125 return string
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126
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127 #================================================
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128 # strip_misalignment_tags(string)
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129 #
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130 # removes the alignment aspect of <p> tags, since
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131 # simply closing one doesn't actually fix the text
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132 # alignment. (I'm assuming this is a bug in wxWindows'
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133 # html parser.)
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134 # However, closing <center> tags does
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135 # return the text to its normal alignment, so this
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136 # algorithm simply closes them, allowing them to be
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137 # used legitimately without causing much annoyance.
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138 # 07-27-2005 mDuo13
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139 #================================================
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140 @debugging
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141 def strip_misalignment_tags(string):
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142 alignment_regex = re.compile(r"""<p([^>]*?)align\s*=\s*('.*?'|".*?"|[^\s>]*)(.*?)>""", re.I)
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143 string = re.sub(alignment_regex, "<p\\1\\3>", string)
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144
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145 center_regex = re.compile(r"""<center.*?>""", re.I)
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146 endcenter_regex = re.compile(r"""</center.*?>""", re.I)
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147 num_centertags = center_regex.findall(string)
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148 num_endcentertags = endcenter_regex.findall(string)
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149 if num_centertags > num_endcentertags:
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150 missing_tags = len(num_centertags) - len(num_endcentertags)
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151 string = string + missing_tags*"</center>"#yes, you can do this.
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152 return string
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153
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154 #================================================
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155 # strip_img_tags(string)
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156 #
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157 # removes all img tags (start and end)
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158 # 05-13-2005
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159 # redone 07-11-2005 by mDuo13
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160 #================================================
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161 @debugging
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162 def strip_img_tags(string):
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163 #This is a Settings definable feature, Allowing users to enable or disable image display to fix the client crash due to large img posted to chat.
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164 #p = re.sub( r'<(\s*)(/*)[Ii][Mm][Gg][ ][Ss][Rr][Cc][=](.*?)>', r'<!-- img tag removed //--> <a href=\3>\3</a>', string)
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165
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166 #this regex is substantially more powerful than the one above
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167 img_tag_regex = re.compile(r"""<img.*?src\s*?=\s*('.*?'|".*?"|[^\s>]*).*?>""", re.I)
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168 #this is what replaces the regex match. the \\1 refers to the URL from the previous string
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169 img_repl_str = "<a href=\\1>[img]</a>"
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170
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171 #replaces all instances of images in the string with links
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172 p = re.sub(img_tag_regex, img_repl_str, string)
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173 return p