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ttsv2ics - ics2txt - convert icalendar .ics file to plain text |
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git clone git://bitreich.org/ics2txt git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/ics2txt (git://bitreich.org) |
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README |
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--- |
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ttsv2ics (1785B) |
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--- |
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1 #!/usr/bin/awk -f |
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2 |
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3 function isleap(year) |
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4 { |
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5 return (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0) |
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6 } |
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7 |
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8 function mdays(mon, year) |
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9 { |
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10 return (mon == 2) ? (28 + isleap(year)) : (30 + (mon + (mon > 7)) % 2) |
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11 } |
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12 |
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13 # Split the time in seconds since epoch into a table, with fields |
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14 # named as with gmtime(3): tm["year"], tm["mon"], tm["mday"], |
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15 # tm["hour"], tm["min"], tm["sec"] |
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16 function gmtime(sec, tm, |
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17 s) |
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18 { |
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19 tm["year"] = 1970 |
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20 while (sec >= (s = 86400 * (365 + isleap(tm["year"])))) { |
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21 tm["year"]++ |
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22 sec -= s |
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23 } |
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24 |
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25 tm["mon"] = 1 |
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26 while (sec >= (s = 86400 * mdays(tm["mon"], tm["year"]))) { |
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27 tm["mon"]++ |
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28 sec -= s |
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29 } |
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30 |
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31 tm["mday"] = 1 |
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32 while (sec >= (s = 86400)) { |
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33 tm["mday"]++ |
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34 sec -= s |
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35 } |
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36 |
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37 tm["hour"] = 0 |
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38 while (sec >= 3600) { |
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39 tm["hour"]++ |
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40 sec -= 3600 |
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41 } |
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42 |
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43 tm["min"] = 0 |
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44 while (sec >= 60) { |
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45 tm["min"]++ |
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46 sec -= 60 |
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47 } |
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48 |
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49 tm["sec"] = sec |
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50 } |
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51 |
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52 function print_fold(prefix, s, n) |
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53 { |
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54 while (s != "") { |
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55 line = substr(s, 1, n) |
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56 if (length(s) > n) sub(" +[^ \t\r\n]*$", "", line) |
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57 print prefix line |
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58 s = substr(s, length(line) + 2) |
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59 } |
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60 } |
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61 |
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62 BEGIN { |
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63 FS = "\t" |
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64 |
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65 print "BEGIN:VCALENDAR" |
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66 print "VERSION:2.0" |
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67 print "CALSCALE:GREGORIAN" |
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68 print "METHOD:PUBLISH" |
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69 } |
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70 |
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71 NR == 1 { |
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72 for (i = 1; i <= NF; i++) |
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73 name[i] = $i |
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74 next |
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75 } |
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76 |
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77 { |
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78 for (i = 1; i <= NF; i++) |
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79 ev[name[i]] = $i |
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80 |
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81 print "" |
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82 print "BEGIN:VEVENT" |
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83 |
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84 gmtime(ev["beg"] + offset, ev) |
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85 printf "DTSTART:%04d%02d%02dT%02d%02d00Z\n", |
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86 ev["year"], ev["mon"], ev["mday"], ev["hour"], ev["min"] |
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87 |
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88 gmtime(ev["end"] + offset, ev) |
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89 printf "DTEND:%04d%02d%02dT%02d%02d00Z\n", |
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90 ev["year"], ev["mon"], ev["mday"], ev["hour"], ev["min"] |
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91 |
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92 print "SUMMARY:" ev["sum"] |
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93 print "DESCRIPTION:" ev["des"] |
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94 print "CATEGORIES:" ev["cat"] |
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95 print "LOCATION:" ev["loc"] |
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96 print "END:VEVENT" |
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97 |
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98 delete ev |
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99 } |
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100 |
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101 END { |
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102 print "" |
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103 print "END:VCALENDAR" |
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104 } |
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