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https://github.com/unidoc/unioffice.git
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3bc4675cf6
This adds comment support for sheets. Excel requires a VML drawing with the comment box shape for each comment to display the comment. LibreOffice displays comments fine with or without the shape, and creates the shape for its own comments. For the sake of compatibility, we create comment shapes as well. I know of no other use for the legacy VML support other than comment boxes...
72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
// Copyright 2017 Baliance. All rights reserved.
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//
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// Use of this source code is governed by the terms of the Affero GNU General
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// Public License version 3.0 as published by the Free Software Foundation and
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// appearing in the file LICENSE included in the packaging of this file. A
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// commercial license can be purchased by contacting sales@baliance.com.
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package spreadsheet
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import (
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"archive/zip"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"baliance.com/gooxml"
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"baliance.com/gooxml/zippkg"
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)
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// Read reads a workbook from an io.Reader(.xlsx).
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func Read(r io.ReaderAt, size int64) (*Workbook, error) {
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wb := New()
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td, err := ioutil.TempDir("", "gooxml-xlsx")
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if err != nil {
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return nil, err
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}
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wb.TmpPath = td
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zr, err := zip.NewReader(r, size)
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if err != nil {
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return nil, fmt.Errorf("parsing zip: %s", err)
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}
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files := []*zip.File{}
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files = append(files, zr.File...)
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decMap := zippkg.DecodeMap{}
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decMap.SetOnNewRelationshipFunc(wb.onNewRelationship)
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// we should discover all contents by starting with these two files
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decMap.AddTarget(zippkg.Target{Path: gooxml.ContentTypesFilename, Ifc: wb.ContentTypes.X()})
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decMap.AddTarget(zippkg.Target{Path: gooxml.BaseRelsFilename, Ifc: wb.Rels.X()})
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if err := decMap.Decode(files); err != nil {
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return nil, err
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}
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// etra files are things we don't handle yet, or files that happened to have
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// been in the zip before. We just round-trip them.
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for _, f := range files {
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if f == nil {
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continue
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}
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if err := wb.AddExtraFileFromZip(f); err != nil {
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return nil, err
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}
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}
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return wb, nil
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}
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// Open opens and reads a workbook from a file (.xlsx).
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func Open(filename string) (*Workbook, error) {
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f, err := os.Open(filename)
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if err != nil {
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return nil, fmt.Errorf("error opening %s: %s", filename, err)
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}
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defer f.Close()
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fi, err := os.Stat(filename)
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if err != nil {
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return nil, fmt.Errorf("error opening %s: %s", filename, err)
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}
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return Read(f, fi.Size())
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}
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