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https://github.com/barasher/go-exiftool

Golang wrapper for Exiftool : extract as much metadata as possible (EXIF, ...) from files (pictures, pdf, office documents, ...)
https://github.com/barasher/go-exiftool

exif exiftool golang iptc wrapper-api

Last synced: 14 days ago
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Golang wrapper for Exiftool : extract as much metadata as possible (EXIF, ...) from files (pictures, pdf, office documents, ...)

Host: GitHub
URL: https://github.com/barasher/go-exiftool
Owner: barasher
License: gpl-3.0
Created: 2019-05-12T20:34:09.000Z (over 5 years ago)
Default Branch: master
Last Pushed: 2024-07-18T08:24:19.000Z (4 months ago)
Last Synced: 2024-07-31T20:51:27.908Z (3 months ago)
Topics: exif, exiftool, golang, iptc, wrapper-api
Language: Go
Homepage:
Size: 211 KB
Stars: 238
Watchers: 8
Forks: 43
Open Issues: 8
Metadata Files:
- Readme: README.MD
- License: LICENSE

Awesome Lists containing this project

awesome-go - go-exiftool - Go bindings for ExifTool, the well-known library used to extract as much metadata as possible (EXIF, IPTC, ...) from files (pictures, PDF, office, ...). (File Handling / Search and Analytic Databases)
awesome-go-extra - go-exiftool - 05-12T20:34:09Z|2022-07-10T21:15:18Z| (File Handling / Advanced Console UIs)

README

        # go-exiftool

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[![codecov](https://codecov.io/gh/barasher/go-exiftool/branch/master/graph/badge.svg)](https://codecov.io/gh/barasher/go-exiftool)

**go-exiftool** is a golang library that wraps [ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/).

[ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/)'s purpose is to extract and update as much metadata as possible (EXIF, IPTC, XMP, GPS, ...) from [a lots of differents file types](https://www.sno.phy.queensu.ca/~phil/exiftool/#supported) (Office documents, pictures, movies, PDF, ...).

**go-exiftool** uses [ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/)'s *`stay_open`* feature to [optimize performance](https://www.sno.phy.queensu.ca/~phil/exiftool/#performance).

## Requirements

**go-exiftool** needs [ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/) to be installed.

- On Debian : `sudo apt-get install exiftool`

By default, `go-exiftool` binary will look for `exiftool` binary in $PATH, but another location can be specified (see `SetExiftoolBinaryPath` functional option).

## Usage

### Metadata extraction

```go

et, err := exiftool.NewExiftool()

if err != nil {

    fmt.Printf("Error when intializing: %v\n", err)

    return

}

defer et.Close()

fileInfos := et.ExtractMetadata("testdata/20190404_131804.jpg")

for _, fileInfo := range fileInfos {

    if fileInfo.Err != nil {

        fmt.Printf("Error concerning %v: %v\n", fileInfo.File, fileInfo.Err)

        continue

    }

    for k, v := range fileInfo.Fields {

        fmt.Printf("[%v] %v\n", k, v)

    }

}

```

Output :

```

[FOV] 69.4 deg

[Orientation] Rotate 90 CW

[ColorSpace] sRGB

[Compression] JPEG (old-style)

[YCbCrSubSampling] YCbCr4:2:2 (2 1)

[Aperture] 1.7

[ColorComponents] 3

[SubSecCreateDate] 2019:04:04 13:18:03.0937

[FileSize] 26 kB

[FileAccessDate] 2019:05:17 22:44:26+02:00

[DateTimeOriginal] 2019:04:04 13:18:03

[CreateDate] 2019:04:04 13:18:03

(...)

```

### Metadata update

See [example function ExampleExiftool_Write in exiftool_sample_test.go](exiftool_sample_test.go)

## Changelog

- v1.1.0 : initial release

- [v1.1.1](https://github.com/barasher/go-exiftool/milestone/2)

  - [add typed getters for filemetadata fields](https://github.com/barasher/go-exiftool/issues/2)

- [v1.1.3](https://github.com/barasher/go-exiftool/milestone/3)

  - [add Mac & Windows support](https://github.com/barasher/go-exiftool/pull/7) (thanks to @PROger4ever)

  - [increase errors readability](https://github.com/barasher/go-exiftool/pull/8) (thanks to @PROger4ever)

- [v1.2.0](https://github.com/barasher/go-exiftool/milestone/4)

  - [add stdout and stderr buffer configuration capabilities](https://github.com/barasher/go-exiftool/issues/6) (thank to @asannikov)

- [v1.3.0](https://github.com/barasher/go-exiftool/milestone/5)

  - Add functionnal option to set [ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/)'s `-charset` parameter (thank to @PROger4ever)

- [v1.3.1](https://github.com/barasher/go-exiftool/milestone/6)

  - [fix line separator on macOS](https://github.com/barasher/go-exiftool/issues/16)

- [v1.3.2](https://github.com/barasher/go-exiftool/milestone/7)

  - [add Freebsd support](https://github.com/barasher/go-exiftool/pull/21) (thanks to @ghyman1)

- [v1.4.0](https://github.com/barasher/go-exiftool/milestone/8)

  - ["NoPrintConversion" functional option](https://github.com/barasher/go-exiftool/pull/24) (thanks to [Kjeldgaard](https://github.com/Kjeldgaard))

- [v1.5.0](https://github.com/barasher/go-exiftool/milestone/9)

  - "ExtractEmbedded" functional option

- [v1.6.0](https://github.com/barasher/go-exiftool/milestone/10)

  - "ExtractAllBinaryMetadata" functional option

- [v1.6.1](https://github.com/barasher/go-exiftool/milestone/11)

  - "SetExiftoolBinaryPath" functional option : specify where to find exiftool binary (default : $path)

- [v1.6.2](https://github.com/barasher/go-exiftool/milestone/12)

  - Several improvements (thanks to [Dale Hui](https://github.com/dhui))

- [v1.7.0](https://github.com/barasher/go-exiftool/milestone/13)

  - Add metadata writing capabilities (thanks to [Dale Hui](https://github.com/dhui))

- [v1.8.0](https://github.com/barasher/go-exiftool/milestone/14)

  - [Fix a bug](https://github.com/barasher/go-exiftool/issues/52) that was blocking `go-exiftool` when a folder was provided. Folder metadata extraction will now return a new sentinel error (ErrNotFile).

  - Add a new sentinel error (`ErrBufferTooSmall`) that is returned when `go-exiftool`'s buffer isn't big enough for a specifi file (countermeasure: initialize `go-exiftool` with the `Buffer` option)

  - [New option to specify a date format (`DateFormat`)](https://github.com/barasher/go-exiftool/pull/60) (thanks to [Andy Gorman](https://github.com/agorman))

  - [New option to output format for GPS coordinates (`CoordFormat`)](https://github.com/barasher/go-exiftool/pull/60) (thanks to [Andy Gorman](https://github.com/agorman))

- [v1.9.0](https://github.com/barasher/go-exiftool/milestone/15)

  - [New option to specify `-api` parameter to Exiftool](https://github.com/barasher/go-exiftool/issues/59) (thanks to [Blesmol](https://github.com/Blesmol))

- [v1.10.0](https://github.com/barasher/go-exiftool/milestone/16)

  - [New option to prefix metadata keys with group names (specifies `-G` parameter to Exiftool)](https://github.com/barasher/go-exiftool/issues/67) (thanks to [Andy Gorman](https://github.com/agorman))