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ttcal2tsv - ics2txt - convert icalendar .ics file to plain text |
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git clone git://bitreich.org/ics2txt git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws… |
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ttcal2tsv (1590B) |
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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)… |
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11 } |
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12 |
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13 function maketime(tm, |
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14 sec, mon, day) |
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15 { |
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16 sec = tm["sec"] + tm["min"] * 60 + tm["hour"] * 3600 |
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17 |
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18 day = tm["mday"] - 1 |
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19 |
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20 for (mon = tm["mon"] - 1; mon > 0; mon--) |
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21 day = day + mdays(mon, tm["year"]) |
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22 |
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23 # constants: x * 365 + x / 400 - x / 100 + x / 4 |
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24 day = day + int(tm["year"] / 400) * 146097 |
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25 day = day + int(tm["year"] % 400 / 100) * 36524 |
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26 day = day + int(tm["year"] % 100 / 4) * 1461 |
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27 day = day + int(tm["year"] % 4 / 1) * 365 |
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28 |
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29 return sec + (day - 719527) * 86400 |
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30 } |
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31 |
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32 function text_to_epoch(str, tz, |
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33 tm) |
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34 { |
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35 tm["year"] = substr(str, 1, 4) |
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36 tm["mon"] = substr(str, 6, 2) |
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37 tm["mday"] = substr(str, 9, 2) |
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38 tm["hour"] = substr(str, 12, 2) |
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39 tm["min"] = substr(str, 15, 2) |
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40 return maketime(tm) - tz |
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41 } |
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42 |
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43 BEGIN { |
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44 FIELDS = "beg end cat loc sum des" |
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45 split(FIELDS, fields, " ") |
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46 |
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47 for (i = 1; i in fields; i++) { |
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48 pos[fields[i]] = i |
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49 printf("%s%s", (i > 1 ? "\t" : ""), fields[i]) |
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50 } |
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51 printf("\n") |
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52 } |
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53 |
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54 { |
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55 gsub(/\t/, " ") |
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56 } |
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57 |
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58 /^TZ[+-]/ { |
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59 TZ = substr($1, 3, 1) substr($0, 4, 2)*3600 + substr($0, 6, 2)*60 |
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60 while (getline && $0 ~ /^$/) |
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61 continue |
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62 } |
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63 |
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64 /^[0-9]+-[0-9]+-[0-9]+/ { |
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65 if ("beg" in ev) |
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66 ev["end"] = text_to_epoch($0, TZ) |
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67 else |
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68 ev["beg"] = text_to_epoch($0, TZ) |
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69 next |
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70 } |
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71 |
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72 /^ / { |
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73 tag = $1 |
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74 sub("^ *[^ :]+: *", "") |
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75 sub(":$", "", tag) |
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76 ev[tag] = $0 |
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77 next |
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78 } |
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79 |
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80 /^$/ { |
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81 for (i = 1; i in fields; i++) |
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82 printf("%s%s", (i > 1 ? "\t" : ""), ev[fields[i]]) |
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83 printf("\n") |
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84 delete ev |
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85 } |
