README.md

This folder contains the GUI translation files. To maintain order and be able to easily make any necessary updates to the translation files after updating the main text file, please follow its instructions if you are working with its contents.

Contents of this folder

The contents of this folder are:

• README.md: this file.

• check.js: file with the script for detecting if a translation file has errors or should be updated.

• en.json: main file with all the texts of the application, in English. It should only be modified when changing the texts of the application (add, modify and delete). This means that the file must not be modified while creating a new ranslation or modifying an existing one.

• Various xx.json files: files with the translated versions of the texts of en.json.

• Various xx_base.json files: files with copies of en.json made the last time the corresponding xx.json file was modified.

Normally there is no need to modify the first two files.

For more information about the xx.json and xx_base.json, please check the Add a new translation and Update a translation sections.

About the meaning of "xx" in this file

Several parts of this file uses "xx" as part of file names or scripts, like xx.json and xx_base.json. In fact, no file in this folder should be called xx.json or xx_base.json, the "xx" part must be replaces with the two characters code of the language. For example, if you are working with the Chinese translation, the files will be zh.json and zh_base.json, instead of xx.json and xx_base.json. The same if true for the scripts, if you are working with the Chinese translation, instead of running node check.js xx you must run node check.js zh.

Add a new translation

First you must create in this folder two copies of the en.json file. The first copy must be called xx.json, where the xx part must be the two characters code of the new language. For example, for Chinese the name of the file should be zh.json; for Spanish, es.json; for French, fr.json, etc.

The second copy of en.json must be renamed to xx_base.json, where the xx part must be the two characters code of the new language. This means that if the first copy is named zh.json, the second one should be named zh_base.json.

It is not necessary to follow a specific standard for the two characters code, but it must be limited to two letters and be a recognizable code for the language.

After creating the two files, simply translate the texts in xx.json. Please make sure you do not modify the structure of xx.json, just modify the texts.

The xx_base.json file must not be modified in any way, as it is used only as a way to know what the state of en.json was the last time the xx.json file was modified. This copy will be compared in the future with en.json, to verify if there were modifications to en.json since the last time the translation file was modified and if an update is needed.

If the xx.json and xx_base.json files do not have the same elements, the automatic tests could fail when uploading the changes to the repository, preventing the changes from being accepted, so, again, it is important not to modify the structure of xx.json, but only its contents.

After doing all this, the translation will be ready, but will not be available in the GUI until adding it to the code.

Verify the translation files

This folder includes a script that is capable of automatically checking the translation files, to detect problems and know what should be updated.

For using it, your computer must have Node.js installed.

Checking for problems

For detecting basic problems on the translation files, open a command line window in this folder and run node check.js. This will check the following:

• The en.json must exist, as it is the main language file for the app.

• For every xx.json file (except en.json) an xx_base.json file must exist and viceversa.

• A xx.json file and its corresponding xx_base.json file must have the exact same elements (only the content of that elements could be different), as the xx.json is suposed to be the translation of the contents of xx_base.json.

As you can see, this only checks for errors that could be made while creating or modifying the xx.json and xx_base.json files, and does not check if any translation needs to be updated.

At the end of the script excecution, the console will display the list of all errors found, if any. This check could be done automatically when making changes to the repository, to reject updates with problems, so it is good idea to run it manually before uploading changes.

Note: at this time the script does not check if the elements of the files are in the same order, but this could be added in the future, so it is recomended not to change the order of the elements.

Checking if a language file needs to be updated

To detect if an specific language needs updating, run node check.js xx, where xx is the two characters code of the language you want to check. If you want to check all languages, run node check.js all.

By doing this, the script will perform all the checks described in the Checking for problems section, plus this:

• The en.json and xx_base.json should have the same elements. If en.json has elements that xx_base.json does not contain, it means that, since the last time the translation file was updated, new texts have been added to the application. If xx_base.json has elements that en.json does not contain, it means that, since the last time the translation file was updated, some texts have been removed from the application. Both cases mean that the translation file should be updated.

• The elements of en.json and xx_base.json should have the same content. If any element have different content, it means that since the last time the translation file was updated, some texts of the applications have been changed. This means that the translation file should be updated.

At the end of the script excecution, the console will display the list of all errors found, if any.

Update a translation

Before updating a translation file, you should follow the steps of the Checking if a language file needs to be updated section. By doing so you will quikly know exactly what texts must be added, deleted or edited.

After doing that, make all the required modifications in the xx.json file, this menans adding, deleting and modifying all the elements indicated by the script. Please be sure to modify only what is required and to add any new element in the same position that it is in the en.json file. This process is manual, so be sure check all the changes before finishing.

After doing the modifications in xx.json, delete the xx_base.json file, create a copy of en.json and rename it xx_base.json. The objetive is to simply update the xx_base.json file to the current state of en.json. this will make possible to check in the future if more updates are nedded, due to new changes in en.json.

Once all the changes are made, check again the language file as indicated in the Checking if a language file needs to be updated section. The script should not return errors. If the script returns errors, please solve them before continuing.

How to edit the translation files

The translation files are in json format (.json files). It is possible to open these files in a text editor and edit them like normal text files. However, the json files are used for coding and have a very strict format. Because of this, editing the files manually is not recommended unless you know exactly what you are doing.

If you do not know the json format, this section includes useful information to be able to edit the files easily.

Which application should be used for editing the files

There are several application that allow editing json files, including some text editors. However, it is recommended to use the Json Editor app for Google Chrome. Among the advantages of this application are that it is multiplatform, it allows editing the contents without having to directly modify the json code and has a relatively simple interface. You can add it to your Chrome browser from here: https://chrome.google.com/webstore/detail/json-editor/lhkmoheomjbkfloacpgllgjcamhihfaj

The app looks like this:

As you can see, you can load/save files on the upper-right corner of the app. The left part shows the source code and the right part shows a tree view of the elements of the file and its contents. You can ignore the source code and work with the tree view only.

As you will not be editing the soutce code, you can hide it by presing and draging the 3-dot button (1). While editing the file, you can use the arrows (2) to expand/contract the different sections in which the elements are organized. Once you find an item that you want to edit, click on the content and modify the text (3). Please, do not make any changes to the name of the element (4).

You can use the 6-dot buttons (5) to move the elements to a different location, but please avoid doing it, as that could alter the order of the file in a way that would make it stop working. Also, as you will not be working with the source code, avoid using the arrow buttons (6).

Special codes

Some texts in the language files have special codes that are not shown in the user interface of the wallet, but serve special purposes. The codes are:

• \": due to how json files work, it is not possible to write double quotes directly in the texts, the ccorrect way to add double quotes to a json file is \" (note that the 2 characters must not be separated by a white space). If you use the Json Editor app for Google Chrome, you can write double quotes normally and the app will automatically add the \ character behind them, but that is just a convenience for when you are writing, you could still find the \" code in files you are editing and have to work with it.

• {{ }}: any text block similar to {{ something }} is a special identifier that the code will replace with a different value when the app is running. For example, if you find a text like "Your balance is {{ value }} coins", the application will show something like "Your balance is 21 coins". In that example the "21" is a value that the app has to calculate, so it is not possible to add it directly into the language file. If you find a {{ }} text block, please do not translate it, just move the whole {{ }} text block to where the value should be displayed. If you want to leave a while space before the value, simply add a white space before the {{ }} text block, and do the same after it if you want a white space after the value.

• <br>: this code means "new line". It is just a way to tell the code that the text after it should be added in a new line.

Make a translation available in the application

Although creating the translation files is the most important step, it is necessary to make some additional changes before a translation is available in the application.

The first thing to do is to add a bitmap in src/assets/img/lang, with the flag that will be used to identify the language. The bitmap should be a .png file with transparent background and a size of 64x64 pixels. However, the flag does not have to occupy all the space of the bitmap, but it should be 64 pixels wide and only 42 pixels high, centered. Please use as a reference the flags that are already in the folder.

After adding the flag, you must modify the src/app/app.config.ts file. In particular, you must add a new entry to the languageConfig.languages array, with the data about the language. The object you must add is similar to this:

{
  code: 'en',
  name: 'English',
  iconName: 'en.png'
}

The properties are:

• code: 2 letter code that was assigned to the language. It must match the name given to the translation file.

• name: Name of the language.

• iconName: Name of the file with the flag, which was added in the previous step.

Please use as a reference the data of the languages that have already been added to the languages array.