github/pmezard.go-difflib
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fix WriteUnifiedDiff fmt.Sprintf format error

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This commit is contained in:
visualfc
2015-12-07 21:12:49 +08:00
parent d8ed2627bd
commit 901e4f8c46
2 changed files with 89 additions and 11 deletions
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18
difflib/difflib.go
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@@ -559,10 +559,14 @@ type UnifiedDiff struct {
func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
buf := bufio.NewWriter(writer)
defer buf.Flush()
w := func(format string, args ...interface{}) error {
wf := func(format string, args ...interface{}) error {
_, err := buf.WriteString(fmt.Sprintf(format, args...))
return err
}
ws := func(s string) error {
_, err := buf.WriteString(s)
return err
}
if len(diff.Eol) == 0 {
diff.Eol = "\n"
@@ -581,11 +585,11 @@ func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
if len(diff.ToDate) > 0 {
toDate = "\t" + diff.ToDate
}
err := w("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
if err != nil {
return err
}
err = w("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
if err != nil {
return err
}
@@ -593,14 +597,14 @@ func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
first, last := g[0], g[len(g)-1]
range1 := formatRangeUnified(first.I1, last.I2)
range2 := formatRangeUnified(first.J1, last.J2)
if err := w("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
return err
}
for _, c := range g {
i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
if c.Tag == 'e' {
for _, line := range diff.A[i1:i2] {
if err := w(" " + line); err != nil {
if err := ws(" " + line); err != nil {
return err
}
}
@@ -608,14 +612,14 @@ func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
}
if c.Tag == 'r' || c.Tag == 'd' {
for _, line := range diff.A[i1:i2] {
if err := w("-" + line); err != nil {
if err := ws("-" + line); err != nil {
return err
}
}
}
if c.Tag == 'r' || c.Tag == 'i' {
for _, line := range diff.B[j1:j2] {
if err := w("+" + line); err != nil {
if err := ws("+" + line); err != nil {
return err
}
}