47 lines
941 B
Markdown
47 lines
941 B
Markdown
```go
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package main
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import (
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// External
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werr "git.gibonuddevalla.se/go/wrappederror"
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// Standard
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"encoding/json"
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"errors"
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"fmt"
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"os"
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)
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func errorHandler(err werr.Error) {
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// For example print or log error to file
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fmt.Printf("\x1b[31;1m%s\x1b[0m\n", err)
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fmt.Printf("\x1b[33;1m%s\x1b[0m\n", err.NoTrace())
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j, _ := json.MarshalIndent(err, "", " ")
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fmt.Printf("%s\n\n", j)
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}
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func main() {
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// Make file paths relative to this file.
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werr.Init()
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// Handler to call when using Log().
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werr.SetLogCallback(errorHandler)
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// Wrap an existing error.
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err := errors.New("foobar 1")
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err1 := werr.Wrap(err)
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// Create a new error with extra information.
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err2 := werr.New("foobar 2").WithCode("FOO-100").WithData(137)
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// The os error contains more information.
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_, errOS := os.ReadFile("/tmp/does_not_exist")
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werr.Wrap(errOS).Log()
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// Log the previously wrapped errors.
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werr.Wrap(err1).Log()
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werr.Wrap(err2).Log()
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}
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```
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