Mercurial > hg > gcmultimerge
annotate multimerge.py @ 20:1f0e79d1766e
Cosmetic.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Mon, 04 Jul 2016 13:54:03 +0300 |
parents | 095209b1ded3 |
children | f392d495c5b6 |
rev | line source |
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1 | 1 #!/usr/bin/python |
3 | 2 # coding=utf-8 |
2 | 3 ### |
4 ### Google Calendar MultiMerge v0.000001 | |
5 ### (C) 2016 Matti 'ccr' Hamalainen <ccr@tnsp.org> | |
6 ### | |
7 ### Python 2.7 <= x < 3 required! Please refer to | |
8 ### README.txt for information on other depencies. | |
9 ### | |
1 | 10 import os |
11 import sys | |
12 import signal | |
13 import re | |
14 import time | |
15 import datetime | |
14
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16 |
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17 import smtplib |
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18 from email.mime.text import MIMEText |
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19 |
1 | 20 import httplib2 |
21 import ConfigParser | |
20 | 22 |
1 | 23 import oauth2client |
24 from oauth2client import client | |
25 from oauth2client import tools | |
4 | 26 from oauth2client import file |
1 | 27 from googleapiclient import discovery |
28 | |
29 | |
30 ### | |
31 ### Misc. helper functions | |
32 ### | |
33 | |
34 ## Wrapper for print() that does not break when redirecting stdin/out | |
35 ## because of piped output not having a defined encoding. We default | |
36 ## to UTF-8 encoding in output here. | |
37 def gcm_print(smsg): | |
38 gcm_msgbuf.append(smsg.encode("UTF-8")) | |
39 if sys.stdout.encoding != None: | |
40 print(smsg.encode(sys.stdout.encoding)) | |
41 else: | |
42 print(smsg.encode("UTF-8")) | |
43 | |
44 | |
45 ## Fatal errors | |
46 def gcm_fatal(smsg): | |
47 gcm_print(u"ERROR: "+ smsg) | |
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48 if cfg.email_ok and cfg.email: |
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49 ## If e-mail is set, send e-mail |
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50 msg = MIMEText(("\n".join(gcm_msgbuf)).encode("UTF-8"), "plain") |
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51 msg.set_charset("UTF-8") |
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52 msg["Subject"] = cfg.email_subject |
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53 msg["From"] = cfg.email_sender |
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54 msg["To"] = ",".join(cfg.email_to) |
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55 try: |
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56 smtpH = smtplib.SMTP('localhost') |
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57 smtpH.sendmail(cfg.email_sender, cfg.email_to, msg.as_string()) |
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58 smtpH.quit() |
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59 except: |
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60 gcm_print("FATAL: Oh crap, e-mail sending failed.") |
1 | 61 sys.exit(1) |
62 | |
63 | |
64 ## Debug messages | |
65 def gcm_debug(smsg): | |
66 if cfg.debug: | |
67 gcm_print(u"DBG: "+ smsg) | |
68 else: | |
69 gcm_msgbuf.append(u"DBG: "+ smsg.encode("UTF-8")) | |
70 | |
71 | |
72 ## Handle SIGINT signals here | |
73 def gcm_signal_handler(signal, frame): | |
74 gcm_print("\nQuitting due to SIGINT / Ctrl+C!") | |
75 sys.exit(0) | |
76 | |
77 | |
78 def gcm_get_credentials(mcfg): | |
79 store = oauth2client.file.Storage(mcfg.credential_file) | |
80 credentials = store.get() | |
81 if not credentials or credentials.invalid: | |
82 flow = client.flow_from_clientsecrets(mcfg.secret_file, mcfg.scope) | |
83 flow.user_agent = mcfg.app_name | |
84 credentials = tools.run_flow(flow, store, mcfg) | |
85 if not credentials or credentials.invalid: | |
86 gcm_fatal("Failed to authenticate / invalid credentials.") | |
87 return credentials | |
88 | |
89 | |
90 def gcm_dump_events(events): | |
91 for event in events: | |
92 ev_start = event["start"].get("dateTime", event["start"].get("date")) | |
93 ev_end = event["end"].get("dateTime", event["end"].get("date")) | |
94 gcm_print(u"{0:25} - {1:25} : {2}".format(ev_start, ev_end, event["summary"])) | |
95 | |
96 | |
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97 def gcm_is_str(mstr): |
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98 return isinstance(mstr, basestring) |
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99 |
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100 |
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101 def gcm_is_string(mstr): |
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102 return mstr == None or gcm_is_str(mstr) |
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103 |
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104 |
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105 def gcm_is_log_level(mstr): |
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106 if not gcm_is_str(mstr): |
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107 return False |
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108 else: |
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109 return mstr.upper() in ["CRITICAL", "ERROR", "WARNING", "INFO", "DEBUG"] |
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110 |
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111 |
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112 def gcm_trans_log_level(mstr): |
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113 return mstr.upper() |
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114 |
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115 |
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116 def gcm_is_filename(mstr): |
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117 if not gcm_is_str(mstr): |
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118 return False |
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119 else: |
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120 return re.match("^[a-z0-9][a-z0-9\.\_\-]+$", mstr, flags=re.IGNORECASE) |
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121 |
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122 |
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123 def gcm_trans_bool(mbool): |
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124 if gcm_is_str(mbool): |
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125 if re.match("^\s*(true|1|on|yes)\s*$", mbool, re.IGNORECASE): |
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126 mbool = True |
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127 elif re.match("^\s*(false|0|off|no)\s*$", mbool, re.IGNORECASE): |
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128 mbool = False |
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129 else: |
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130 return None |
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131 return mbool |
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132 |
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133 def gcm_is_bool(mbool): |
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134 mval = gcm_trans_bool(mbool) |
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135 if not isinstance(mval, bool): |
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136 gcm_fatal("gcm_is_bool(): Invalid boolean value '{0}', should be true|false|1|0|on|off|yes|no.".format(mbool)) |
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137 else: |
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138 return True |
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139 |
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140 |
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141 def gcm_trans_list(mlist): |
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142 morig = mlist |
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143 if gcm_is_str(mlist): |
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144 mlist = re.split("\s*,\s*", mlist, flags=re.IGNORECASE) |
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145 if not isinstance(mlist, list): |
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146 gcm_fatal("gcm_trans_list(): Could not parse list '{0}'.".format(mlist)) |
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147 elif not isinstance(mlist, list): |
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148 gcm_fatal("gcm_trans_list(): Invalid value '{0}'.".format(mlist)) |
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149 return mlist |
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150 |
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151 def gcm_is_list(mlist): |
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152 return gcm_trans_list(mlist) |
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153 |
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154 |
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155 def gcm_is_email(mstr): |
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156 if not gcm_is_string(mstr): |
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157 return False |
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158 else: |
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159 return re.match("^.*?\s+<[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+>\s*$|[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+", mstr, flags=re.IGNORECASE) |
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160 |
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161 |
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162 def gcm_trans_email_list(mlist): |
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163 if mlist == None: |
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164 return mlist |
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165 else: |
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166 return gcm_trans_list(mlist.strip()) |
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167 |
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168 def gcm_is_email_list(mlist): |
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169 mlist = gcm_trans_email_list(mlist) |
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170 if mlist != None: |
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171 for email in mlist: |
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172 if not gcm_is_email(email): |
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173 gcm_fatal("Invalid e-mail address '{0}' in list {1}.".format(email, ", ".join(mlist))) |
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174 return True |
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175 |
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176 |
1 | 177 class GCMSettings(dict): |
178 def __init__(self): | |
179 self.m_data = {} | |
180 self.m_saveable = {} | |
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181 self.m_validate = {} |
1 | 182 self.m_translate = {} |
183 | |
184 def __getattr__(self, name): | |
185 if name in self.m_data: | |
186 return self.m_data[name] | |
187 else: | |
188 gcm_fatal("GCMSettings.__getattr__(): No such attribute '"+ name +"'.") | |
189 | |
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190 def mvalidate(self, name, value): |
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191 if name in self.m_validate and self.m_validate[name]: |
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192 if not self.m_validate[name](value): |
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193 gcm_fatal("GCMSettings.mvalidate(): Invalid value for attribute '{0}': {1}".format(name, value)) |
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194 |
1 | 195 def mtranslate(self, name, value): |
196 if name in self.m_translate and self.m_translate[name]: | |
197 return self.m_translate[name](value) | |
198 else: | |
199 return value | |
200 | |
201 def mdef(self, name, saveable, validate, translate, value): | |
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202 self.mvalidate(name, value) |
1 | 203 self.m_saveable[name] = saveable |
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204 self.m_validate[name] = validate |
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205 self.m_translate[name] = translate |
1 | 206 self.m_data[name] = self.mtranslate(name, value) |
207 | |
208 def mset(self, name, value): | |
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209 self.mvalidate(name, value) |
1 | 210 if name in self.m_data: |
211 self.m_data[name] = self.mtranslate(name, value) | |
212 else: | |
213 gcm_fatal("GCMSettings.mset(): No such attribute '"+ name +"'.") | |
214 | |
215 def mget(self, name): | |
216 if name in self.m_data: | |
217 return self.m_data[name] | |
218 else: | |
219 return None | |
220 | |
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221 def mread(self, cfgparser, sect): |
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222 for name in self.m_saveable: |
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223 if cfgparser.has_option(sect, name): |
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224 value = cfgparser.get(sect, name) |
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225 self.mset(name, value) |
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226 gcm_debug("{0} -> '{1}' == {2}".format(name, value, self.mget(name))) |
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227 |
1 | 228 |
229 ### | |
230 ### Main program starts | |
231 ### | |
232 gcm_msgbuf = [] | |
233 signal.signal(signal.SIGINT, gcm_signal_handler) | |
234 | |
235 | |
236 ## Settings | |
237 cfg = GCMSettings() | |
238 | |
239 cfg.mdef("debug", True, gcm_is_bool, gcm_trans_bool, False) | |
240 | |
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241 cfg.mdef("email_ok", False, None, None, False) |
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242 cfg.mdef("email", True, gcm_is_bool, gcm_trans_bool, False) |
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243 cfg.mdef("email_to", True, gcm_is_email_list, gcm_trans_email_list, None) |
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244 cfg.mdef("email_sender", True, gcm_is_email, None, None) |
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245 cfg.mdef("email_subject", True, gcm_is_string, None, "Google Calendar MultiMerge status") |
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246 |
1 | 247 cfg.mdef("source_regex", True, gcm_is_string, None, "^R:\s*(.*?)\s*\(\s*(.+?)\s*\)\s*$") |
248 cfg.mdef("source_regmap", False, gcm_is_list, gcm_trans_list, [1, 2]) | |
249 cfg.mdef("source_regmap_len", False, None, None, len(cfg.source_regmap)) | |
250 | |
251 cfg.mdef("dest_name", True, gcm_is_string, None, u"Raahen kansainvälisyystoiminta") | |
252 cfg.mdef("dest_id", True, gcm_is_string, None, None) | |
253 | |
254 cfg.mdef("noauth_local_webserver", False, None, None, True) | |
255 #cfg.mdef("auth_host_name", False, None, None, "localhost") | |
256 #cfg.mdef("auth_host_port", False, None, None, [8080, 8090]) | |
257 cfg.mdef("logging_level", True, gcm_is_log_level, gcm_trans_log_level, "ERROR") | |
258 | |
259 # No need to touch these | |
260 cfg.mdef("app_name", False, None, None, "Google Calendar MultiMerge") | |
261 cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar") | |
262 #cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar.readonly") | |
263 cfg.mdef("secret_file", True, gcm_is_filename, None, "client_secret.json") | |
264 cfg.mdef("credential_file", True, gcm_is_filename, None, "client_credentials.json") | |
265 | |
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266 |
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267 ## Read, parse and validate configuration file |
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268 if len(sys.argv) > 1: |
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269 gcm_debug("Reading configuration from '{0}'.".format(sys.argv[1])) |
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270 try: |
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271 cfgparser = ConfigParser.RawConfigParser() |
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272 cfgparser.read(sys.argv[1]) |
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273 except Exception as e: |
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274 gcm_fatal("Failed to read configuration file '{0}': {1}".format(sys.argv[1], str(e))) |
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275 |
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276 # Check that the required section exists |
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277 section = "gcm" |
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278 if not cfgparser.has_section(section): |
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279 gcm_fatal("Invalid configuration, missing '{0}' section.".format(section)) |
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280 |
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281 # Debug setting is a special case, we need to get it |
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282 # set before everything else, so do it here .. |
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283 if cfgparser.has_option(section, "debug"): |
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284 cfg.mset("debug", cfgparser.get(section, "debug")) |
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285 |
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286 # Parse the settings and validate |
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287 cfg.mread(cfgparser, section) |
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288 |
8 | 289 |
290 ## Validate settings | |
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291 if cfg.email: |
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292 if cfg.email_subject == None or len(cfg.email_subject) == 0: |
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293 gcm_fatal("E-mail enabled but email_subject not set.") |
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294 elif cfg.email_sender == None: |
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295 gcm_fatal("E-mail enabled but email_sender not set.") |
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296 elif cfg.email_to == None: |
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297 gcm_fatal("E-mail enabled but email_to not set.") |
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298 else: |
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299 cfg.mset("email_ok", True) |
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300 |
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301 |
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302 if len(cfg.source_regmap) != cfg.source_regmap_len: |
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303 gcm_fatal("Setting source_regmap list must be {0} items.".format(cfg.source_regmap_len)) |
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304 else: |
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305 # Force to integers |
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306 try: |
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307 cfg.source_regmap = map(lambda x: int(x), cfg.source_regmap) |
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308 except Exception as e: |
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309 gcm_fatal("Invalid source_regmap: {0}".format(str(e))) |
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310 |
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311 |
8 | 312 if not cfg.dest_name and not cfg.dest_id: |
313 gcm_fatal("Target calendar ID or name required, but not set.") | |
314 | |
315 | |
316 if cfg.dest_name: | |
317 cfg.mset("dest_name", cfg.mget("dest_name").strip()) | |
318 | |
319 | |
1 | 320 ## Initialize and authorize API connection |
321 credentials = gcm_get_credentials(cfg) | |
322 http = credentials.authorize(httplib2.Http()) | |
323 service = discovery.build("calendar", "v3", http=http) | |
324 | |
325 | |
326 ## Fetch complete calendar list | |
327 gcm_debug("Fetching available calendars ..") | |
328 calendars = [] | |
19 | 329 cal_token = None |
1 | 330 while True: |
331 # We want everything except deleted and hidden calendars | |
17 | 332 result = service.calendarList().list( |
1 | 333 showHidden=False, |
334 showDeleted=False, | |
19 | 335 pageToken=cal_token |
1 | 336 ).execute() |
337 | |
17 | 338 calendars.extend(result.get("items", [])) |
19 | 339 cal_token = result.get("nextPageToken") |
340 if not cal_token: | |
1 | 341 break |
342 | |
343 if len(calendars) == 0: | |
344 gcm_fatal("No calendars found?") | |
345 | |
346 | |
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347 ## Filter desired SOURCE calendars based on specified regexp |
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348 src_re = re.compile(cfg.source_regex) |
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349 src_calendars = [] |
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350 for calendar in calendars: |
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351 if "summary" in calendar: |
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352 if not cfg.dest_id and cfg.dest_name == calendar["summary"].strip(): |
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353 cfg.mset("dest_id", calendar["id"]) |
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354 |
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355 mre = src_re.match(calendar["summary"]) |
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356 if mre: |
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357 calendar["gcm_title"] = mre.group(cfg.source_regmap[0]) |
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358 calendar["gcm_id"] = mre.group(cfg.source_regmap[1]) |
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359 src_calendars.append(calendar) |
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360 |
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361 |
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362 ## Check if we have target ID |
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363 if not cfg.dest_id: |
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364 gcm_fatal(u"Could not find target/destination calendar ID for '"+ cfg.dest_name +"'.") |
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365 |
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366 |
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367 ## Now, we fetch and collect events |
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368 gcm_debug(u"Fetching calendar events .. ") |
19 | 369 src_events = [] |
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370 for calendar in src_calendars: |
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371 gcm_debug("- "+calendar["id"]) |
17 | 372 result = service.events().list( |
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373 timeZone="EEST", |
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374 calendarId=calendar["id"], |
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375 singleEvents=True, |
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376 showDeleted=False, |
17 | 377 # orderBy="startTime", |
378 ).execute() | |
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379 |
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380 # Add events, if any, to main list |
17 | 381 events = result.get("items", []) |
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382 if events: |
19 | 383 src_events.append(events) |
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384 if cfg.debug: |
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385 gcm_dump_events(events) |
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386 |
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387 |
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388 ## Get current events |
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389 gcm_debug(u"Fetching current target calendar events {0}".format(cfg.dest_id)) |
17 | 390 result = service.events().list( |
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391 calendarId=cfg.dest_id, |
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392 singleEvents=True, |
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393 showDeleted=True).execute() |
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changeset
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394 |
19 | 395 curr_events = result.get("items", []) |
396 if curr_events: | |
397 gcm_debug(u"Found {0} event(s).".format(len(curr_events))) | |
13
dd240a7ad913
Fetch current events in destination calendar.
Matti Hamalainen <ccr@tnsp.org>
parents:
11
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changeset
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398 else: |
dd240a7ad913
Fetch current events in destination calendar.
Matti Hamalainen <ccr@tnsp.org>
parents:
11
diff
changeset
|
399 gcm_debug(u"No current events.") |
dd240a7ad913
Fetch current events in destination calendar.
Matti Hamalainen <ccr@tnsp.org>
parents:
11
diff
changeset
|
400 |
dd240a7ad913
Fetch current events in destination calendar.
Matti Hamalainen <ccr@tnsp.org>
parents:
11
diff
changeset
|
401 |