diff options
Diffstat (limited to 'diff.go')
| -rw-r--r-- | diff.go | 103 |
1 files changed, 88 insertions, 15 deletions
@@ -5,6 +5,7 @@ package git extern int _go_git_diff_foreach(git_diff *diff, int eachFile, int eachHunk, int eachLine, void *payload); extern void _go_git_setup_diff_notify_callbacks(git_diff_options* opts); +extern int _go_git_diff_blobs(git_blob *old, const char *old_path, git_blob *new, const char *new_path, git_diff_options *opts, int eachFile, int eachHunk, int eachLine, void *payload); */ import "C" import ( @@ -94,7 +95,7 @@ type DiffHunk struct { Header string } -func diffHunkFromC(delta *C.git_diff_delta, hunk *C.git_diff_hunk) DiffHunk { +func diffHunkFromC(hunk *C.git_diff_hunk) DiffHunk { return DiffHunk{ OldStart: int(hunk.old_start), OldLines: int(hunk.old_lines), @@ -112,7 +113,7 @@ type DiffLine struct { Content string } -func diffLineFromC(delta *C.git_diff_delta, hunk *C.git_diff_hunk, line *C.git_diff_line) DiffLine { +func diffLineFromC(line *C.git_diff_line) DiffLine { return DiffLine{ Origin: DiffLineType(line.origin), OldLineno: int(line.old_lineno), @@ -265,7 +266,11 @@ func (diff *Diff) ForEach(cbFile DiffForEachFileCallback, detail DiffDetail) err data := &diffForEachData{ FileCallback: cbFile, } - ecode := C._go_git_diff_foreach(diff.ptr, 1, intHunks, intLines, unsafe.Pointer(data)) + + handle := pointerHandles.Track(data) + defer pointerHandles.Untrack(handle) + + ecode := C._go_git_diff_foreach(diff.ptr, 1, intHunks, intLines, handle) if ecode < 0 { return data.Error } @@ -273,8 +278,12 @@ func (diff *Diff) ForEach(cbFile DiffForEachFileCallback, detail DiffDetail) err } //export diffForEachFileCb -func diffForEachFileCb(delta *C.git_diff_delta, progress C.float, payload unsafe.Pointer) int { - data := (*diffForEachData)(payload) +func diffForEachFileCb(delta *C.git_diff_delta, progress C.float, handle unsafe.Pointer) int { + payload := pointerHandles.Get(handle) + data, ok := payload.(*diffForEachData) + if !ok { + panic("could not retrieve data for handle") + } data.HunkCallback = nil if data.FileCallback != nil { @@ -292,12 +301,16 @@ func diffForEachFileCb(delta *C.git_diff_delta, progress C.float, payload unsafe type DiffForEachHunkCallback func(DiffHunk) (DiffForEachLineCallback, error) //export diffForEachHunkCb -func diffForEachHunkCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, payload unsafe.Pointer) int { - data := (*diffForEachData)(payload) +func diffForEachHunkCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, handle unsafe.Pointer) int { + payload := pointerHandles.Get(handle) + data, ok := payload.(*diffForEachData) + if !ok { + panic("could not retrieve data for handle") + } data.LineCallback = nil if data.HunkCallback != nil { - cb, err := data.HunkCallback(diffHunkFromC(delta, hunk)) + cb, err := data.HunkCallback(diffHunkFromC(hunk)) if err != nil { data.Error = err return -1 @@ -311,11 +324,14 @@ func diffForEachHunkCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, payload u type DiffForEachLineCallback func(DiffLine) error //export diffForEachLineCb -func diffForEachLineCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, line *C.git_diff_line, payload unsafe.Pointer) int { - - data := (*diffForEachData)(payload) +func diffForEachLineCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, line *C.git_diff_line, handle unsafe.Pointer) int { + payload := pointerHandles.Get(handle) + data, ok := payload.(*diffForEachData) + if !ok { + panic("could not retrieve data for handle") + } - err := data.LineCallback(diffLineFromC(delta, hunk, line)) + err := data.LineCallback(diffLineFromC(line)) if err != nil { data.Error = err return -1 @@ -479,9 +495,15 @@ type diffNotifyData struct { } //export diffNotifyCb -func diffNotifyCb(_diff_so_far unsafe.Pointer, delta_to_add *C.git_diff_delta, matched_pathspec *C.char, payload unsafe.Pointer) int { +func diffNotifyCb(_diff_so_far unsafe.Pointer, delta_to_add *C.git_diff_delta, matched_pathspec *C.char, handle unsafe.Pointer) int { diff_so_far := (*C.git_diff)(_diff_so_far) - data := (*diffNotifyData)(payload) + + payload := pointerHandles.Get(handle) + data, ok := payload.(*diffNotifyData) + if !ok { + panic("could not retrieve data for handle") + } + if data != nil { if data.Diff == nil { data.Diff = newDiffFromC(diff_so_far) @@ -507,6 +529,7 @@ func diffOptionsToC(opts *DiffOptions) (copts *C.git_diff_options, notifyData *d notifyData = &diffNotifyData{ Callback: opts.NotifyCallback, } + if opts.Pathspec != nil { cpathspec.count = C.size_t(len(opts.Pathspec)) cpathspec.strings = makeCStringsFromStrings(opts.Pathspec) @@ -527,7 +550,7 @@ func diffOptionsToC(opts *DiffOptions) (copts *C.git_diff_options, notifyData *d if opts.NotifyCallback != nil { C._go_git_setup_diff_notify_callbacks(copts) - copts.notify_payload = unsafe.Pointer(notifyData) + copts.notify_payload = pointerHandles.Track(notifyData) } } return @@ -539,6 +562,9 @@ func freeDiffOptions(copts *C.git_diff_options) { freeStrarray(&cpathspec) C.free(unsafe.Pointer(copts.old_prefix)) C.free(unsafe.Pointer(copts.new_prefix)) + if copts.notify_payload != nil { + pointerHandles.Untrack(copts.notify_payload) + } } } @@ -645,3 +671,50 @@ func (v *Repository) DiffIndexToWorkdir(index *Index, opts *DiffOptions) (*Diff, } return newDiffFromC(diffPtr), nil } + +// DiffBlobs performs a diff between two arbitrary blobs. You can pass +// whatever file names you'd like for them to appear as in the diff. +func DiffBlobs(oldBlob *Blob, oldAsPath string, newBlob *Blob, newAsPath string, opts *DiffOptions, fileCallback DiffForEachFileCallback, detail DiffDetail) error { + data := &diffForEachData{ + FileCallback: fileCallback, + } + + intHunks := C.int(0) + if detail >= DiffDetailHunks { + intHunks = C.int(1) + } + + intLines := C.int(0) + if detail >= DiffDetailLines { + intLines = C.int(1) + } + + handle := pointerHandles.Track(data) + defer pointerHandles.Untrack(handle) + + var oldBlobPtr, newBlobPtr *C.git_blob + if oldBlob != nil { + oldBlobPtr = oldBlob.cast_ptr + } + if newBlob != nil { + newBlobPtr = newBlob.cast_ptr + } + + oldBlobPath := C.CString(oldAsPath) + defer C.free(unsafe.Pointer(oldBlobPath)) + newBlobPath := C.CString(newAsPath) + defer C.free(unsafe.Pointer(newBlobPath)) + + copts, _ := diffOptionsToC(opts) + defer freeDiffOptions(copts) + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + ecode := C._go_git_diff_blobs(oldBlobPtr, oldBlobPath, newBlobPtr, newBlobPath, copts, 1, intHunks, intLines, handle) + if ecode < 0 { + return MakeGitError(ecode) + } + + return nil +} |