114 lines
4.0 KiB
Go
114 lines
4.0 KiB
Go
// Copyright (c) 2021 The Srpmproc Authors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package directives
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import (
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"bytes"
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"errors"
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"fmt"
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"log"
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"github.com/bluekeyes/go-gitdiff/gitdiff"
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"github.com/go-git/go-git/v5"
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srpmprocpb "github.com/rocky-linux/srpmproc/pb"
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"github.com/rocky-linux/srpmproc/pkg/data"
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)
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func patch(cfg *srpmprocpb.Cfg, _ *data.ProcessData, _ *data.ModeData, patchTree *git.Worktree, pushTree *git.Worktree) error {
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for _, patch := range cfg.Patch {
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patchFile, err := patchTree.Filesystem.Open(patch.File)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_OPEN_PATCH_FILE:%s", patch.File))
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}
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files, _, err := gitdiff.Parse(patchFile)
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if err != nil {
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log.Printf("could not parse patch file: %v", err)
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return errors.New(fmt.Sprintf("COULD_NOT_PARSE_PATCH_FILE:%s", patch.File))
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}
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for _, patchedFile := range files {
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srcPath := patchedFile.NewName
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if !patch.Strict {
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srcPath = checkAddPrefix(patchedFile.NewName)
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}
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var output bytes.Buffer
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if !patchedFile.IsDelete && !patchedFile.IsNew {
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patchSubjectFile, err := pushTree.Filesystem.Open(srcPath)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_OPEN_PATCH_SUBJECT:%s", srcPath))
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}
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err = gitdiff.NewApplier(patchSubjectFile).ApplyFile(&output, patchedFile)
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if err != nil {
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log.Printf("could not apply patch: %v", err)
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return errors.New(fmt.Sprintf("COULD_NOT_APPLY_PATCH_WITH_SUBJECT:%s", srcPath))
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}
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}
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oldName := patchedFile.OldName
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if !patch.Strict {
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oldName = checkAddPrefix(patchedFile.OldName)
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}
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_ = pushTree.Filesystem.Remove(oldName)
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_ = pushTree.Filesystem.Remove(srcPath)
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if patchedFile.IsNew {
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newFile, err := pushTree.Filesystem.Create(srcPath)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_CREATE_NEW_FILE:%s", srcPath))
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}
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err = gitdiff.NewApplier(newFile).ApplyFile(&output, patchedFile)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_APPLY_PATCH_TO_NEW_FILE:%s", srcPath))
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}
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_, err = newFile.Write(output.Bytes())
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_WRITE_TO_NEW_FILE:%s", srcPath))
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}
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_, err = pushTree.Add(srcPath)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_ADD_NEW_FILE_TO_GIT:%s", srcPath))
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}
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} else if !patchedFile.IsDelete {
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newFile, err := pushTree.Filesystem.Create(srcPath)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_CREATE_POST_PATCH_FILE:%s", srcPath))
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}
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_, err = newFile.Write(output.Bytes())
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_WRITE_POST_PATCH_FILE:%s", srcPath))
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}
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_, err = pushTree.Add(srcPath)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_ADD_POST_PATCH_FILE_TO_GIT:%s", srcPath))
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}
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} else {
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_, err = pushTree.Remove(oldName)
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if err != nil {
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return errors.New(fmt.Sprintf("COULD_NOT_REMOVE_FILE_FROM_GIT:%s", oldName))
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}
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}
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}
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}
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return nil
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}
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