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https://codeberg.org/forgejo/forgejo.git
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Fix yet another bug with diff file names (#12771)
Following further testing it has become apparent that the diff line cannot be used to determine filenames for diffs with any sort of predictability the answer therefore is to use the other lines that are provided with a diff Fix #12768 Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath
GitHub
parent
1fbc50f974
commit
96969ddec8
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@ -694,7 +694,7 @@ func ActionContent2Commits(act Actioner) *repository.PushCommits {
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// DiffTypeToStr returns diff type name
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func DiffTypeToStr(diffType int) string {
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diffTypes := map[int]string{
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1: "add", 2: "modify", 3: "del", 4: "rename",
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1: "add", 2: "modify", 3: "del", 4: "rename", 5: "copy",
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}
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return diffTypes[diffType]
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}
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@ -53,6 +53,7 @@ const (
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DiffFileChange
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DiffFileDel
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DiffFileRename
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DiffFileCopy
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)
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// DiffLineExpandDirection represents the DiffLineSection expand direction
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@ -481,7 +482,46 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader) (*D
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}
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line := linebuf.String()
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if strings.HasPrefix(line, "+++ ") || strings.HasPrefix(line, "--- ") || len(line) == 0 {
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if strings.HasPrefix(line, "--- ") {
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if line[4] == '"' {
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fmt.Sscanf(line[4:], "%q", &curFile.OldName)
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} else {
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curFile.OldName = line[4:]
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if strings.Contains(curFile.OldName, " ") {
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// Git adds a terminal \t if there is a space in the name
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curFile.OldName = curFile.OldName[:len(curFile.OldName)-1]
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}
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}
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if curFile.OldName[0:2] == "a/" {
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curFile.OldName = curFile.OldName[2:]
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}
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continue
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} else if strings.HasPrefix(line, "+++ ") {
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if line[4] == '"' {
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fmt.Sscanf(line[4:], "%q", &curFile.Name)
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} else {
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curFile.Name = line[4:]
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if strings.Contains(curFile.Name, " ") {
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// Git adds a terminal \t if there is a space in the name
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curFile.Name = curFile.Name[:len(curFile.Name)-1]
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}
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}
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if curFile.Name[0:2] == "b/" {
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curFile.Name = curFile.Name[2:]
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}
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curFile.IsRenamed = (curFile.Name != curFile.OldName) && !(curFile.IsCreated || curFile.IsDeleted)
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if curFile.IsDeleted {
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curFile.Name = curFile.OldName
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curFile.OldName = ""
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} else if curFile.IsCreated {
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curFile.OldName = ""
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}
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continue
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} else if len(line) == 0 {
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continue
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}
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if strings.HasPrefix(line, "+++") || strings.HasPrefix(line, "---") || len(line) == 0 {
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continue
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}
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@ -569,36 +609,10 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader) (*D
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break
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}
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// Note: In case file name is surrounded by double quotes (it happens only in git-shell).
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// e.g. diff --git "a/xxx" "b/xxx"
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var a string
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var b string
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rd := strings.NewReader(line[len(cmdDiffHead):])
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char, _ := rd.ReadByte()
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_ = rd.UnreadByte()
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if char == '"' {
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fmt.Fscanf(rd, "%q ", &a)
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} else {
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fmt.Fscanf(rd, "%s ", &a)
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}
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char, _ = rd.ReadByte()
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_ = rd.UnreadByte()
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if char == '"' {
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fmt.Fscanf(rd, "%q", &b)
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} else {
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fmt.Fscanf(rd, "%s", &b)
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}
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a = a[2:]
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b = b[2:]
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curFile = &DiffFile{
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Name: b,
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OldName: a,
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Index: len(diff.Files) + 1,
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Type: DiffFileChange,
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Sections: make([]*DiffSection, 0, 10),
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IsRenamed: a != b,
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Index: len(diff.Files) + 1,
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Type: DiffFileChange,
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Sections: make([]*DiffSection, 0, 10),
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}
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diff.Files = append(diff.Files, curFile)
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curFileLinesCount = 0
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@ -607,6 +621,7 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader) (*D
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curFileLFSPrefix = false
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// Check file diff type and is submodule.
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loop:
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for {
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line, err := input.ReadString('\n')
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if err != nil {
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@ -617,23 +632,67 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader) (*D
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}
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}
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switch {
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case strings.HasPrefix(line, "new file"):
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curFile.Type = DiffFileAdd
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curFile.IsCreated = true
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case strings.HasPrefix(line, "deleted"):
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curFile.Type = DiffFileDel
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curFile.IsDeleted = true
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case strings.HasPrefix(line, "index"):
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curFile.Type = DiffFileChange
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case strings.HasPrefix(line, "similarity index 100%"):
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curFile.Type = DiffFileRename
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}
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if curFile.Type > 0 {
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if strings.HasSuffix(line, " 160000\n") {
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curFile.IsSubmodule = true
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if curFile.Type != DiffFileRename {
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switch {
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case strings.HasPrefix(line, "new file"):
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curFile.Type = DiffFileAdd
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curFile.IsCreated = true
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case strings.HasPrefix(line, "deleted"):
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curFile.Type = DiffFileDel
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curFile.IsDeleted = true
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case strings.HasPrefix(line, "index"):
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curFile.Type = DiffFileChange
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case strings.HasPrefix(line, "similarity index 100%"):
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curFile.Type = DiffFileRename
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}
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if curFile.Type > 0 && curFile.Type != DiffFileRename {
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if strings.HasSuffix(line, " 160000\n") {
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curFile.IsSubmodule = true
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}
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break
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}
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} else {
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switch {
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case strings.HasPrefix(line, "rename from "):
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if line[12] == '"' {
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fmt.Sscanf(line[12:], "%q", &curFile.OldName)
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} else {
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curFile.OldName = line[12:]
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curFile.OldName = curFile.OldName[:len(curFile.OldName)-1]
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}
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case strings.HasPrefix(line, "rename to "):
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if line[10] == '"' {
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fmt.Sscanf(line[10:], "%q", &curFile.Name)
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} else {
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curFile.Name = line[10:]
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curFile.Name = curFile.Name[:len(curFile.Name)-1]
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}
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curFile.IsRenamed = true
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break loop
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case strings.HasPrefix(line, "copy from "):
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if line[10] == '"' {
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fmt.Sscanf(line[10:], "%q", &curFile.OldName)
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} else {
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curFile.OldName = line[10:]
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curFile.OldName = curFile.OldName[:len(curFile.OldName)-1]
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}
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case strings.HasPrefix(line, "copy to "):
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if line[8] == '"' {
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fmt.Sscanf(line[8:], "%q", &curFile.Name)
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} else {
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curFile.Name = line[8:]
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curFile.Name = curFile.Name[:len(curFile.Name)-1]
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}
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curFile.IsRenamed = true
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curFile.Type = DiffFileCopy
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break loop
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default:
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if strings.HasSuffix(line, " 160000\n") {
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curFile.IsSubmodule = true
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} else {
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break loop
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}
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}
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break
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}
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}
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}
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@ -6,6 +6,7 @@
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package gitdiff
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import (
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"encoding/json"
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"fmt"
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"html/template"
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"strings"
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@ -14,11 +15,9 @@ import (
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/setting"
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"gopkg.in/ini.v1"
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dmp "github.com/sergi/go-diff/diffmatchpatch"
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"github.com/stretchr/testify/assert"
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"gopkg.in/ini.v1"
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)
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func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
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@ -77,7 +76,145 @@ func TestDiffToHTML(t *testing.T) {
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}, DiffLineAdd))
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}
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func TestParsePatch(t *testing.T) {
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func TestParsePatch_singlefile(t *testing.T) {
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type testcase struct {
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name string
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gitdiff string
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wantErr bool
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addition int
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deletion int
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oldFilename string
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filename string
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}
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tests := []testcase{
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{
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name: "readme.md2readme.md",
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gitdiff: `diff --git "a/README.md" "b/README.md"
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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off
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`,
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addition: 4,
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deletion: 1,
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filename: "README.md",
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},
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{
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name: "A \\ B",
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gitdiff: `diff --git "a/A \\ B" "b/A \\ B"
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--- "a/A \\ B"
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+++ "b/A \\ B"
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`,
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addition: 4,
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deletion: 1,
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filename: "A \\ B",
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},
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{
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name: "really weird filename",
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gitdiff: `diff --git a/a b/file b/a a/file b/a b/file b/a a/file
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index d2186f1..f5c8ed2 100644
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--- a/a b/file b/a a/file
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+++ b/a b/file b/a a/file
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@@ -1,3 +1,2 @@
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Create a weird file.
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-and what does diff do here?
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\ No newline at end of file`,
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addition: 0,
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deletion: 1,
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filename: "a b/file b/a a/file",
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oldFilename: "a b/file b/a a/file",
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},
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{
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name: "delete file with blanks",
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gitdiff: `diff --git a/file with blanks b/file with blanks
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deleted file mode 100644
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index 898651a..0000000
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--- a/file with blanks
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+++ /dev/null
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@@ -1,5 +0,0 @@
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-a blank file
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-
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-has a couple o line
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-
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-the 5th line is the last
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`,
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addition: 0,
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deletion: 5,
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filename: "file with blanks",
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},
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{
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name: "rename a—as",
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gitdiff: `diff --git "a/\360\243\220\265b\342\200\240vs" "b/a\342\200\224as"
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similarity index 100%
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rename from "\360\243\220\265b\342\200\240vs"
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rename to "a\342\200\224as"
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`,
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addition: 0,
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deletion: 0,
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oldFilename: "𣐵b†vs",
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filename: "a—as",
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},
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{
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name: "rename with spaces",
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gitdiff: `diff --git a/a b/file b/a a/file b/a b/a a/file b/b file
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similarity index 100%
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rename from a b/file b/a a/file
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rename to a b/a a/file b/b file
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`,
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oldFilename: "a b/file b/a a/file",
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filename: "a b/a a/file b/b file",
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},
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}
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for _, testcase := range tests {
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t.Run(testcase.name, func(t *testing.T) {
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got, err := ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(testcase.gitdiff))
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if (err != nil) != testcase.wantErr {
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t.Errorf("ParsePatch() error = %v, wantErr %v", err, testcase.wantErr)
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return
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}
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gotMarshaled, _ := json.MarshalIndent(got, " ", " ")
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if got.NumFiles != 1 {
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t.Errorf("ParsePath() did not receive 1 file:\n%s", string(gotMarshaled))
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return
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}
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if got.TotalAddition != testcase.addition {
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t.Errorf("ParsePath() does not have correct totalAddition %d, wanted %d", got.TotalAddition, testcase.addition)
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}
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if got.TotalDeletion != testcase.deletion {
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t.Errorf("ParsePath() did not have correct totalDeletion %d, wanted %d", got.TotalDeletion, testcase.deletion)
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}
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file := got.Files[0]
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if file.Addition != testcase.addition {
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t.Errorf("ParsePath() does not have correct file addition %d, wanted %d", file.Addition, testcase.addition)
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}
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if file.Deletion != testcase.deletion {
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t.Errorf("ParsePath() did not have correct file deletion %d, wanted %d", file.Deletion, testcase.deletion)
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}
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if file.OldName != testcase.oldFilename {
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t.Errorf("ParsePath() did not have correct OldName %s, wanted %s", file.OldName, testcase.oldFilename)
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}
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if file.Name != testcase.filename {
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t.Errorf("ParsePath() did not have correct Name %s, wanted %s", file.Name, testcase.filename)
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}
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})
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}
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var diff = `diff --git "a/README.md" "b/README.md"
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--- a/README.md
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+++ b/README.md
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