diff options
Diffstat (limited to 'pdf/pdf.go')
| -rw-r--r-- | pdf/pdf.go | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -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("> >>") |