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README-SAMPLES.md
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@ -23,7 +23,7 @@ The following programs are build and installed in /usr/local/bin.
| _**exifdata**_ | Prints _**Exif**_ metadata in different formats in an image | [exifdata](#exifdata) | [exifdata.cpp](samples/exifdata.cpp) |
| _**exifprint**_ | Print _**Exif**_ metadata in images<br>Miscelleous other features | [exifprint](#exifprint)| [exifprint.cpp](samples/exifprint.cpp) |
| _**exifvalue**_ | Prints the value of a single _**Exif**_ tag in a file | [exifvalue](#exifvalue) | [exifvalue.cpp](samples/exifvalue.cpp) |
| _**exiv2**_ | Command line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata.<br>This is the primary test tool used by Team Exiv2 and can exercise almost all code in the library. Due to the extensive capability of this utility, the APIs used are usually less obvious for casual code inspection. | [https://exiv2.org/manpage.html](https://exiv2.org/manpage.html)<br>[https://exiv2.org/sample.html](https://exiv2.org/sample.html) | |
| _**exiv2**_ | Utility to read and write image metadata, including Exif, IPTC, XMP, image comments, ICC Profile, thumbnails, image previews and many vendor makernote tags.<br>This is the primary test tool used by Team Exiv2 and can exercise almost all code in the library. Due to the extensive capability of this utility, the APIs used are usually less obvious for casual code inspection. | [exiv2 manpage](exiv2.md)<br>[https://exiv2.org/sample.html](https://exiv2.org/sample.html) | |
| _**exiv2json**_ | Extracts data from image in JSON format.<br>This program also contains a parser to recursively parse Xmp metadata into vectors and objects. | [exiv2json](#exiv2json) | [exiv2json.cpp](samples/exiv2json.cpp) |
| _**geotag**_ | Reads GPX data and updates images with GPS Tags | [geotag](#geotag) | [geotag.cpp](samples/geotag.cpp) |
| _**iptceasy**_ | Demonstrates read, set or modify IPTC metadata | [iptceasy](#iptceasy) | [iptceasy.cpp](samples/iptceasy.cpp) |
@ -162,16 +162,20 @@ Option: all | exif | iptc | xmp | filesystem
This program dumps metadata from an image in JSON format. _Code: [exiv2json.cpp](samples/exiv2json.cpp)_
exiv2json has a recursive parser to encode XMP into Vectors and Objects. XMP data is XMP and can contain XMP `Bag` and `Seq` which are converted to JSON Objects and Arrays. Exiv2 presents data in the format: Family.Group.Tag. For XMP, results in "flat" output such such as:
exiv2json has a recursive parser to encode XMP into Vectors and Objects. XMP data is XMP and can contain XMP `Bag` and `Seq` which are converted to JSON Objects and Arrays. Exiv2 presents data in the format: [Family.Group.Tagname](exiv2.md#exiv2_key_syntax). For XMP, results in "flat" output such such as:
```
$ exiv2 -px ~/Stonehenge.jpg
$ curl --silent -O https://clanmills.com/Stonehenge.jpg
$ exiv2 --print x Stonehenge.jpg
Xmp.xmp.Rating XmpText 1 0
Xmp.xmp.ModifyDate XmpText 25 2015-07-16T20:25:28+01:00
Xmp.cm2e.Father XmpText 11 Robin Mills
Xmp.cm2e.Family XmpBag 0
Xmp.dc.description LangAlt 1 lang="x-default" Classic View
Xmp.dc.Family XmpBag 1 Robin
```
exiv2json parses the Exiv2 'Family.Group.Tag' data and restores the structure of the original data in JSON. _Code: [exiv2json.cpp](samples/exiv2json.cpp)_
exiv2json parses the Exiv2 [Family.Group.Tagname](exiv2.md#exiv2_key_syntax) data and restores the structure of the original data in JSON. _Code: [exiv2json.cpp](samples/exiv2json.cpp)_
```
$ exiv2json -xmp http://clanmills.com/Stonehenge.jpg
@ -532,7 +536,8 @@ FlashDevice, 9, 0x0009, Nikon3, Exif.Nikon3.FlashDevice, Ascii, Flash de
We can see those tags being used:
```
$ exiv2 -pa --grep Nikon3 http://clanmills.com/Stonehenge.jpg
$ curl --silent -O https://clanmills.com/Stonehenge.jpg
$ exiv2 --print a --grep Nikon3 Stonehenge.jpg
Exif.Nikon3.Version Undefined 4 2.11
Exif.Nikon3.ISOSpeed Short 2 200
...
@ -542,7 +547,7 @@ This information is formatted (search Nikon (format 3) MakerNote Tags): [https:/
#### taglist all
These options are provided to list every Exif tag known to Exiv2. The option `all` prints Group.Name for every tag. The option `ALL` print Group.Name followed by the TagInfo for that tag. For example:
These options are provided to list every tag known to Exiv2. The option `all` prints the [Group.Tagnames](exiv2.md#exiv2_key_syntax) for every Exif tag. The option `ALL` prints the [Group.Tagnames](exiv2.md#exiv2_key_syntax) for every Exif tag, followed by the TagInfo for that tag. For example:
```bash
$ taglist all | grep ISOSpeed$
@ -659,4 +664,4 @@ Read an XMP packet from a file, parse and re-serialize it.
Robin Mills<br>
robin@clanmills.com<br>
Revised: 2021-06-23
Revised: 2021-09-21

22
README.md
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@ -197,7 +197,7 @@ See [README-CONAN](README-CONAN.md) for more information.
### Libiconv
The library libiconv is used to perform character set encoding in the tags Exif.Photo.UserComment, Exif.GPSInfo.GPSProcessingMethod and Exif.GPSInfo.GPSAreaInformation. This is documented in the exiv2 man page.
The library libiconv is used to perform character set encoding in the tags Exif.Photo.UserComment, Exif.GPSInfo.GPSProcessingMethod and Exif.GPSInfo.GPSAreaInformation. This is documented in the [exiv2 man page](exiv2.md).
CMake will detect libiconv of all UNIX like systems including Linux, macOS, UNIX, Cygwin64 and MinGW/msys2. If you have installed libiconv on your machine, Exiv2 will link and use it.
@ -311,9 +311,9 @@ You must install the build to test localisation. This ensures that the localisa
$ env LANG=fr_FR exiv2 # env LANGUAGE=fr_FR exiv2 on Linux!
exiv2: Une action doit être spécifié
exiv2: Au moins un fichier est nécessaire
Utilisation : exiv2 [ options ] [ action ] fichier ...
Utilisation : exiv2 [ option [ arg ] ]+ [ action ] fichier ...
Manipulation des métadonnées EXIF issues des images.
Image metadata manipulation tool.
$
```
@ -334,14 +334,14 @@ I edited the following:
```bash
#: src/exiv2.cpp:237
msgid "Manipulate the Exif metadata of images.\n"
msgid "Image metadata manipulation tool.\n"
msgstr ""
```
to:
```bash
#: src/exiv2.cpp:237
msgid "Manipulate the Exif metadata of images.\n"
msgid "Image metadata manipulation tool.\n"
msgstr "Manipulate image metadata.\n"
```
@ -362,7 +362,7 @@ $ sudo cp -R po/xy/LC_MESSAGES/exiv2.mo /usr/local/share/locale/xy/LC_MESSAGES
$ env LANG=xy exiv2 # env LANGUAGE=xy on Linux!
exiv2: An action must be specified
exiv2: At least one file is required
Usage: exiv2 [ options ] [ action ] file ...
Usage: exiv2 [ option [ arg ] ]+ [ action ] file ...
Manipulate image metadata. <--------- Edited message!
$
@ -717,14 +717,12 @@ You may wish to use wine to execute exiv2 from the command prompt. To do this:
[rmills@rmillsmm-fedora build_mingw_fedora]$ wine cmd
Microsoft Windows 6.1.7601
Z:\Home\gnu\github\exiv2\0.27-maintenance\build_mingw_fedora>bin\exiv2
Z:\Home\gnu\github\exiv2\main\build_mingw_fedora>bin\exiv2
exiv2: An action must be specified
exiv2: At least one file is required
Usage: exiv2 [ options ] [ action ] file ...
Usage: exiv2 [ option [ arg ] ]+ [ action ] file ...
Manipulate the Exif metadata of images.
Z:\Home\gnu\github\exiv2\0.27-maintenance\build_mingw_fedora>
Image metadata manipulation tool.
```
If you have not installed wine, Fedora will offer to install it for you.
@ -1333,5 +1331,5 @@ $ sudo pkg install developer/gcc-7
[TOC](#TOC)
Written by Robin Mills<br>robin@clanmills.com<br>Updated: 2021-04-06
Written by Robin Mills<br>robin@clanmills.com<br>Updated: 2021-09-21

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