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annotate cmd/sievemgr/command.go @ 3:3cd182bff992
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author | Guido Berhoerster <guido+sievemgr@berhoerster.name> |
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date | Tue, 27 Oct 2020 17:54:58 +0100 |
parents | 0cd5a454dfb4 |
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Add README file
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1 // Copyright (C) 2020 Guido Berhoerster <guido+sievemgr@berhoerster.name> |
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2 // |
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3 // Permission is hereby granted, free of charge, to any person obtaining |
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4 // a copy of this software and associated documentation files (the |
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5 // "Software"), to deal in the Software without restriction, including |
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6 // without limitation the rights to use, copy, modify, merge, publish, |
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7 // distribute, sublicense, and/or sell copies of the Software, and to |
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8 // permit persons to whom the Software is furnished to do so, subject to |
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9 // the following conditions: |
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10 // |
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11 // The above copyright notice and this permission notice shall be included |
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12 // in all copies or substantial portions of the Software. |
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13 // |
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14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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17 // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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18 // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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19 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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20 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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21 |
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22 package main |
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23 |
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24 import ( |
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25 "flag" |
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26 "fmt" |
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27 "strings" |
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28 ) |
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29 |
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30 type command struct { |
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31 UsageLine string |
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32 Flag flag.FlagSet |
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33 Run func(cmd *command, args []string) error |
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34 } |
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35 |
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36 func (c *command) Usage() { |
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37 fmt.Fprintf(flag.CommandLine.Output(), "usage:\n %s %s\n", |
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38 flag.CommandLine.Name(), c.UsageLine) |
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39 fmt.Fprintln(flag.CommandLine.Output(), "options:") |
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40 c.Flag.PrintDefaults() |
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41 } |
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42 |
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43 func (c *command) Name() string { |
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44 return strings.SplitN(strings.Trim(c.UsageLine, " "), " ", 2)[0] |
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45 } |