50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
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package danglingwhitespace
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import (
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"bytes"
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"fmt"
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"github.com/vbatts/git-validation/git"
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"github.com/vbatts/git-validation/validate"
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)
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var (
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// DanglingWhitespace is the rule for checking the presence of dangling
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// whitespaces on line endings.
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DanglingWhitespace = validate.Rule{
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Name: "dangling-whitespace",
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Description: "checking the presence of dangling whitespaces on line endings",
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Run: ValidateDanglingWhitespace,
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}
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)
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func init() {
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validate.RegisterRule(DanglingWhitespace)
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}
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func ValidateDanglingWhitespace(c git.CommitEntry) (vr validate.Result) {
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diff, err := git.Show(c["commit"])
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if err != nil {
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return validate.Result{Pass: false, Msg: err.Error(), CommitEntry: c}
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}
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vr.CommitEntry = c
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vr.Pass = true
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for _, line := range bytes.Split(diff, newLine) {
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if !bytes.HasPrefix(line, diffAddLine) || bytes.Equal(line, diffAddLine) {
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continue
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}
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if len(bytes.TrimSpace(line)) != len(line) {
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vr.Pass = false
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vr.Msg = fmt.Sprintf("line %q has trailiing spaces", string(line))
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}
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}
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vr.Msg = "all added diff lines do not have trailing spaces"
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return
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}
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var (
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newLine = []byte("\n")
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diffAddLine = []byte("+ ")
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)
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