Mercurial > gemma

annotate pkg/xlsx/handlebars.go @ 5688:6281c18b109f sr-v2

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Finsh serializing v2 meshes.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 12 Feb 2024 02:27:41 +0100
parents 0919946f624b
children
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2021 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package xlsx
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15
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16 import "strings"
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17
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18 func handlebars(s string, replace func(string) string) string {
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19
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20 var (
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21 out, repl strings.Builder
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22 mode int
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23 )
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24
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25 for _, c := range s {
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26 switch mode {
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27 case 0:
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28 if c == '{' {
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29 mode = 1
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30 } else {
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31 out.WriteRune(c)
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32 }
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33 case 1:
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34 if c == '{' {
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35 mode = 2
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36 } else {
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37 out.WriteByte('{')
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38 out.WriteRune(c)
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39 mode = 0
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40 }
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41 case 2:
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42 switch c {
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43 case '\\':
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44 mode = 3
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45 case '}':
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46 mode = 4
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47 default:
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48 repl.WriteRune(c)
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49 }
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50 case 3:
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51 repl.WriteRune(c)
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52 mode = 2
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53 case 4:
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54 if c == '}' {
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55 out.WriteString(replace(repl.String()))
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56 repl.Reset()
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57 mode = 0
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58 } else {
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59 repl.WriteByte('}')
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60 repl.WriteRune(c)
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61 mode = 2
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62 }
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63 }
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64 }
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65
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66 switch mode {
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67 case 1:
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68 out.WriteByte('{')
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69 case 2:
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70 out.WriteString("{{")
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71 out.WriteString(repl.String())
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72 case 3:
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73 out.WriteString("{{")
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74 out.WriteString(repl.String())
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75 out.WriteByte('\\')
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76 case 4:
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77 out.WriteString("{{")
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78 out.WriteString(repl.String())
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79 out.WriteByte('}')
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80 }
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81
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82 return out.String()
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83 }