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Go: additional small fixes

This commit is contained in:
Přemysl Eric Janouch 2018-10-04 13:29:22 +02:00
parent 62206ed344
commit 9d2412398a
Signed by: p
GPG Key ID: A0420B94F92B9493
2 changed files with 7 additions and 5 deletions
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4
cmd/pdf-simple-sign/main.go
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@ -64,9 +64,9 @@ func main() {
die(3, "%s", err) die(3, "%s", err)
} }
if pdfDocument, err = pdf.Sign(pdfDocument, key, certs); err != nil { if pdfDocument, err = pdf.Sign(pdfDocument, key, certs); err != nil {
die(2, "error: %s", err) die(4, "error: %s", err)
} }
if err = ioutil.WriteFile(outputPath, pdfDocument, 0666); err != nil { if err = ioutil.WriteFile(outputPath, pdfDocument, 0666); err != nil {
die(3, "%s", err) die(5, "%s", err)
} }
} }

8
pdf/pdf.go
View File

@ -795,7 +795,8 @@ type BytesWriter interface {
WriteString(s string) (n int, err error) WriteString(s string) (n int, err error)
} }
// Update appends an updated object to the end of the document. // Update appends an updated object to the end of the document. The fill
// callback must write exactly one PDF object.
func (u *Updater) Update(n uint, fill func(buf BytesWriter)) { func (u *Updater) Update(n uint, fill func(buf BytesWriter)) {
oldRef := u.xref[n] oldRef := u.xref[n]
u.updated[n] = struct{}{} u.updated[n] = struct{}{}
@ -880,7 +881,8 @@ func NewDate(ts time.Time) Object {
return NewString(string(buf)) return NewString(string(buf))
} }
// GetFirstPage retrieves the first page of the document or a Nil object. // GetFirstPage retrieves the first page of the given page (sub)tree reference,
// or returns a Nil object if unsuccessful.
func (u *Updater) GetFirstPage(nodeN, nodeGeneration uint) Object { func (u *Updater) GetFirstPage(nodeN, nodeGeneration uint) Object {
obj, _ := u.Get(nodeN, nodeGeneration) obj, _ := u.Get(nodeN, nodeGeneration)
if obj.Kind != Dict { if obj.Kind != Dict {
@ -1126,7 +1128,7 @@ func Sign(document []byte,
buf.WriteString("\n /Contents <") buf.WriteString("\n /Contents <")
signOff = buf.Len() signOff = buf.Len()
signLen = 8192 // cert, digest, encripted digest, ... signLen = 8192 // cert, digest, encrypted digest, ...
buf.Write(bytes.Repeat([]byte{'0'}, signLen)) buf.Write(bytes.Repeat([]byte{'0'}, signLen))
buf.WriteString("> >>") buf.WriteString("> >>")