From 9d2412398ad51e31048ae61f42955f04f85d292f Mon Sep 17 00:00:00 2001 From: Přemysl Janouch Date: Thu, 4 Oct 2018 13:29:22 +0200 Subject: Go: additional small fixes --- cmd/pdf-simple-sign/main.go | 4 ++-- pdf/pdf.go | 8 +++++--- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/cmd/pdf-simple-sign/main.go b/cmd/pdf-simple-sign/main.go index 11aadaa..7c82786 100644 --- a/cmd/pdf-simple-sign/main.go +++ b/cmd/pdf-simple-sign/main.go @@ -64,9 +64,9 @@ func main() { die(3, "%s", err) } 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 { - die(3, "%s", err) + die(5, "%s", err) } } diff --git a/pdf/pdf.go b/pdf/pdf.go index 17a4982..1616b0d 100644 --- a/pdf/pdf.go +++ b/pdf/pdf.go @@ -795,7 +795,8 @@ type BytesWriter interface { 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)) { oldRef := u.xref[n] u.updated[n] = struct{}{} @@ -880,7 +881,8 @@ func NewDate(ts time.Time) Object { 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 { obj, _ := u.Get(nodeN, nodeGeneration) if obj.Kind != Dict { @@ -1126,7 +1128,7 @@ func Sign(document []byte, buf.WriteString("\n /Contents <") signOff = buf.Len() - signLen = 8192 // cert, digest, encripted digest, ... + signLen = 8192 // cert, digest, encrypted digest, ... buf.Write(bytes.Repeat([]byte{'0'}, signLen)) buf.WriteString("> >>") -- cgit v1.2.3-70-g09d2