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38 lines
609 B
Go
38 lines
609 B
Go
package main
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import (
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"io"
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"log"
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"os"
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"strings"
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"github.com/imkira/go-interpol"
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)
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func main() {
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template, err := os.Open("template.txt")
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if err != nil {
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log.Fatal(err)
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}
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defer template.Close()
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output, err := os.Create("output.txt")
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if err != nil {
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log.Fatal(err)
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}
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defer output.Close()
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opts := &interpol.Options{
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Template: template,
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Format: toUpper,
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Output: output,
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}
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i := interpol.NewWithOptions(opts)
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if err := i.Interpolate(); err != nil {
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log.Fatal(err)
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}
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}
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func toUpper(key string, w io.Writer) error {
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_, err := w.Write([]byte(strings.ToUpper(key)))
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return err
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}
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