docProps.go
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// Copyright 2016 - 2019 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to
// and read from XLSX files. Support reads and writes XLSX file generated by
// Microsoft Excel™ 2007 and later. Support save file without losing original
// charts of XLSX. This library needs Go version 1.10 or later.
package excelize
import (
"encoding/xml"
"reflect"
)
// SetDocProps provides a function to set document core properties. The
// properties that can be set are:
//
// Property | Description
// ----------------+-----------------------------------------------------------------------------
// Title | The name given to the resource.
// |
// Subject | The topic of the content of the resource.
// |
// Creator | An entity primarily responsible for making the content of the resource.
// |
// Keywords | A delimited set of keywords to support searching and indexing. This is
// | typically a list of terms that are not available elsewhere in the properties.
// |
// Description | An explanation of the content of the resource.
// |
// LastModifiedBy | The user who performed the last modification. The identification is
// | environment-specific.
// |
// Language | The language of the intellectual content of the resource.
// |
// Identifier | An unambiguous reference to the resource within a given context.
// |
// Revision | The topic of the content of the resource.
// |
// ContentStatus | The status of the content. For example: Values might include "Draft",
// | "Reviewed" and "Final"
// |
// Category | A categorization of the content of this package.
// |
// Version | The version number. This value is set by the user or by the application.
//
// For example:
//
// err := f.SetDocProps(&excelize.DocProperties{
// Category: "category",
// ContentStatus: "Draft",
// Created: "2019-06-04T22:00:10Z",
// Creator: "Go Excelize",
// Description: "This file created by Go Excelize",
// Identifier: "xlsx",
// Keywords: "Spreadsheet",
// LastModifiedBy: "Go Author",
// Modified: "2019-06-04T22:00:10Z",
// Revision: "0",
// Subject: "Test Subject",
// Title: "Test Title",
// Language: "en-US",
// Version: "1.0.0",
// })
//
func (f *File) SetDocProps(docProperties *DocProperties) error {
core := decodeCoreProperties{}
err := xml.Unmarshal(namespaceStrictToTransitional(f.readXML("docProps/core.xml")), &core)
if err != nil {
return err
}
newProps := xlsxCoreProperties{
Dc: NameSpaceDublinCore,
Dcterms: NameSpaceDublinCoreTerms,
Dcmitype: NameSpaceDublinCoreMetadataIntiative,
XSI: NameSpaceXMLSchemaInstance,
Title: core.Title,
Subject: core.Subject,
Creator: core.Creator,
Keywords: core.Keywords,
Description: core.Description,
LastModifiedBy: core.LastModifiedBy,
Language: core.Language,
Identifier: core.Identifier,
Revision: core.Revision,
ContentStatus: core.ContentStatus,
Category: core.Category,
Version: core.Version,
}
newProps.Created.Text = core.Created.Text
newProps.Created.Type = core.Created.Type
newProps.Modified.Text = core.Modified.Text
newProps.Modified.Type = core.Modified.Type
fields := []string{"Category", "ContentStatus", "Creator", "Description", "Identifier", "Keywords", "LastModifiedBy", "Revision", "Subject", "Title", "Language", "Version"}
immutable := reflect.ValueOf(*docProperties)
mutable := reflect.ValueOf(&newProps).Elem()
for _, field := range fields {
val := immutable.FieldByName(field).String()
if val != "" {
mutable.FieldByName(field).SetString(val)
}
}
if docProperties.Created != "" {
newProps.Created.Text = docProperties.Created
}
if docProperties.Modified != "" {
newProps.Modified.Text = docProperties.Modified
}
output, err := xml.Marshal(&newProps)
f.saveFileList("docProps/core.xml", output)
return err
}
// GetDocProps provides a function to get document core properties.
func (f *File) GetDocProps() (*DocProperties, error) {
core := decodeCoreProperties{}
err := xml.Unmarshal(namespaceStrictToTransitional(f.readXML("docProps/core.xml")), &core)
if err != nil {
return nil, err
}
return &DocProperties{
Category: core.Category,
ContentStatus: core.ContentStatus,
Created: core.Created.Text,
Creator: core.Creator,
Description: core.Description,
Identifier: core.Identifier,
Keywords: core.Keywords,
LastModifiedBy: core.LastModifiedBy,
Modified: core.Modified.Text,
Revision: core.Revision,
Subject: core.Subject,
Title: core.Title,
Language: core.Language,
Version: core.Version,
}, nil
}