79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
package processors
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"strings"
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"github.com/golangci/revgrep"
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"github.com/golangci/golangci-lint/pkg/result"
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)
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const envGolangciDiffProcessorPatch = "GOLANGCI_DIFF_PROCESSOR_PATCH"
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type Diff struct {
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onlyNew bool
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fromRev string
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patchFilePath string
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wholeFiles bool
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patch string
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}
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var _ Processor = Diff{}
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func NewDiff(onlyNew bool, fromRev, patchFilePath string, wholeFiles bool) *Diff {
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return &Diff{
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onlyNew: onlyNew,
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fromRev: fromRev,
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patchFilePath: patchFilePath,
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wholeFiles: wholeFiles,
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patch: os.Getenv(envGolangciDiffProcessorPatch),
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}
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}
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func (p Diff) Name() string {
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return "diff"
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}
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func (p Diff) Process(issues []result.Issue) ([]result.Issue, error) {
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if !p.onlyNew && p.fromRev == "" && p.patchFilePath == "" && p.patch == "" { // no need to work
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return issues, nil
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}
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var patchReader io.Reader
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if p.patchFilePath != "" {
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patch, err := os.ReadFile(p.patchFilePath)
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if err != nil {
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return nil, fmt.Errorf("can't read from patch file %s: %w", p.patchFilePath, err)
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}
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patchReader = bytes.NewReader(patch)
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} else if p.patch != "" {
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patchReader = strings.NewReader(p.patch)
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}
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c := revgrep.Checker{
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Patch: patchReader,
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RevisionFrom: p.fromRev,
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WholeFiles: p.wholeFiles,
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}
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if err := c.Prepare(); err != nil {
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return nil, fmt.Errorf("can't prepare diff by revgrep: %w", err)
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}
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return transformIssues(issues, func(i *result.Issue) *result.Issue {
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hunkPos, isNew := c.IsNewIssue(i)
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if !isNew {
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return nil
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}
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newI := *i
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newI.HunkPos = hunkPos
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return &newI
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}), nil
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}
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func (Diff) Finish() {}
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