this repo has no description
Check for leftover content after a full delete (#9)
When applying a text fragment that deletes all content in the file, make
sure there is no content left in the source after using all the lines in
the fragment. If there is is extra content, it's a conflict: something
added more lines to the file after generating the patch.
authored by
Billy Keyes
and committed by
GitHub
4fa98017
b5ae0bd4
+357
-8
+13
gitdiff/apply.go
+13
gitdiff/apply.go
···
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}
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}
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a.nextLine = fragStart + used
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+
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+
// new position of +0,0 mean a full delete, so check for leftovers
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+
if f.NewPosition == 0 && f.NewLines == 0 {
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+
var b [1][]byte
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+
n, err := a.lineSrc.ReadLinesAt(b[:], a.nextLine)
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+
if err != nil && err != io.EOF {
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+
return applyError(err, lineNum(a.nextLine))
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+
}
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+
if n > 0 {
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+
return applyError(&Conflict{"src still has content after full delete"}, lineNum(a.nextLine))
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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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+28
-4
gitdiff/apply_test.go
+28
-4
gitdiff/apply_test.go
···
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func TestApplyFile(t *testing.T) {
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tests := map[string]applyTest{
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-
"textModify": {Files: getApplyFiles("text_file_modify")},
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-
"binaryModify": {Files: getApplyFiles("bin_file_modify")},
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-
"modeChange": {Files: getApplyFiles("file_mode_change")},
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+
"textModify": {
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+
Files: applyFiles{
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+
Src: "file_text.src",
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+
Patch: "file_text_modify.patch",
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Out: "file_text_modify.out",
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+
},
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+
},
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+
"textDelete": {
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+
Files: applyFiles{
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+
Src: "file_text.src",
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+
Patch: "file_text_delete.patch",
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+
Out: "file_text_delete.out",
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+
},
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+
},
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+
"textErrorPartialDelete": {
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+
Files: applyFiles{
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+
Src: "file_text.src",
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+
Patch: "file_text_error_partial_delete.patch",
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+
},
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+
Err: &Conflict{},
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+
},
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+
"binaryModify": {
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+
Files: getApplyFiles("file_bin_modify"),
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+
},
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+
"modeChange": {
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+
Files: getApplyFiles("file_mode_change"),
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+
},
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}
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for name, test := range tests {
···
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}
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if !bytes.Equal(out, dst.Bytes()) {
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t.Errorf("incorrect result after apply\nexpected:\n%x\nactual:\n%x", out, dst.Bytes())
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+
t.Errorf("incorrect result after apply\nexpected:\n%q\nactual:\n%q", out, dst.Bytes())
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}
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}
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gitdiff/testdata/apply/bin_file_modify.out
gitdiff/testdata/apply/file_bin_modify.out
gitdiff/testdata/apply/bin_file_modify.out
gitdiff/testdata/apply/file_bin_modify.out
+1
-1
gitdiff/testdata/apply/bin_file_modify.patch
gitdiff/testdata/apply/file_bin_modify.patch
+1
-1
gitdiff/testdata/apply/bin_file_modify.patch
gitdiff/testdata/apply/file_bin_modify.patch
···
1
-
diff --git a/gitdiff/testdata/apply/bin_file_modify.src b/gitdiff/testdata/apply/bin_file_modify.src
1
+
diff --git a/gitdiff/testdata/apply/file_bin_modify.src b/gitdiff/testdata/apply/file_bin_modify.src
2
2
GIT binary patch
3
3
delta 172
4
4
zcmV;d08{^f2)qc8AP{I3VQ>J`s>wb0HU+h#6w8q?tUO~cHmDjZi2<8yZ9XmKhhMdo
gitdiff/testdata/apply/bin_file_modify.src
gitdiff/testdata/apply/file_bin_modify.src
gitdiff/testdata/apply/bin_file_modify.src
gitdiff/testdata/apply/file_bin_modify.src
gitdiff/testdata/apply/file_text_delete.out
gitdiff/testdata/apply/file_text_delete.out
This is a binary file and will not be displayed.
+206
gitdiff/testdata/apply/file_text_delete.patch
+206
gitdiff/testdata/apply/file_text_delete.patch
···
1
+
diff --git a/gitdiff/testdata/apply/file_text.src.src b/gitdiff/testdata/apply/file_text.src
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+
deleted file mode 100644
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+
index 3805ad4..0000000
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+
--- a/gitdiff/testdata/apply/file_text.src.src
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+
+++ /dev/null
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+
@@ -1,200 +0,0 @@
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+
-this is line 1
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-this is line 2
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-this is line 3
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+106
gitdiff/testdata/apply/file_text_error_partial_delete.patch
+106
gitdiff/testdata/apply/file_text_error_partial_delete.patch
···
1
+
diff --git a/gitdiff/testdata/apply/file_text.src.src b/gitdiff/testdata/apply/file_text.src
2
+
deleted file mode 100644
3
+
index 3805ad4..0000000
4
+
--- a/gitdiff/testdata/apply/file_text.src.src
5
+
+++ /dev/null
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+
@@ -1,100 +0,0 @@
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-this is line 1
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-this is line 100
gitdiff/testdata/apply/text_file_modify.out
gitdiff/testdata/apply/file_text_modify.out
gitdiff/testdata/apply/text_file_modify.out
gitdiff/testdata/apply/file_text_modify.out
+3
-3
gitdiff/testdata/apply/text_file_modify.patch
gitdiff/testdata/apply/file_text_modify.patch
+3
-3
gitdiff/testdata/apply/text_file_modify.patch
gitdiff/testdata/apply/file_text_modify.patch
···
1
-
diff --git a/gitdiff/testdata/apply/text_file_modify.src b/gitdiff/testdata/apply/text_file_modify.src
2
-
--- a/gitdiff/testdata/apply/text_file_modify.src
3
-
+++ b/gitdiff/testdata/apply/text_file_modify.src
1
+
diff --git a/gitdiff/testdata/apply/file_text.src b/gitdiff/testdata/apply/file_text.src
2
+
--- a/gitdiff/testdata/apply/file_text.src
3
+
+++ b/gitdiff/testdata/apply/file_text.src
4
4
@@ -1,4 +1,4 @@
5
5
-this is line 1
6
6
+the first line is different
gitdiff/testdata/apply/text_file_modify.src
gitdiff/testdata/apply/file_text.src
gitdiff/testdata/apply/text_file_modify.src
gitdiff/testdata/apply/file_text.src