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Showing content from https://developers.google.com/translate/docs/advanced/detecting-language-v3 below:

Detecting languages (Advanced) | Cloud Translation

This document describes how to use the Cloud Translation - Advanced to detect the language of a string.

Before you can start using the Cloud Translation API, you must have a project that has the Cloud Translation API enabled, and you must have the appropriate credentials. You can also install client libraries for common programming languages to help you make calls to the API. For more information, see the Setup page.

Language detection does not support the language codes fr-CR and pt-BR.

You can detect the language of a text string by sending an HTTP request using a URL of the following format:

REST

To detect the language of some text, make a POST request and provide the appropriate request body. The following shows an example of a POST request using curl and PowerShell. The example uses the access token for a service account set up for the project using the Google Cloud Google Cloud CLI. For instructions on installing the Google Cloud CLI, setting up a project with a service account, and obtaining an access token, see the Setup page.

Before using any of the request data, make the following replacements:

PROJECT_NUMBER_OR_ID: the numeric or alphanumeric ID of your Google Cloud project

HTTP method and URL:

POST https://translation.googleapis.com/v3/projects/PROJECT_NUMBER_OR_ID/locations/global:detectLanguage

Request JSON body:

{
   "content":"Доктор Ватсон, иди сюда!"
}

To send your request, expand one of these options:

curl (Linux, macOS, or Cloud Shell) Note: The following command assumes that you have logged in to the gcloud CLI with your user account by running gcloud init or gcloud auth login , or by using Cloud Shell, which automatically logs you into the gcloud CLI . You can check the currently active account by running gcloud auth list.

Save the request body in a file named request.json, and execute the following command:

curl -X POST \
     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     -H "x-goog-user-project: PROJECT_NUMBER_OR_ID" \
     -H "Content-Type: application/json; charset=utf-8" \
     -d @request.json \
     "https://translation.googleapis.com/v3/projects/PROJECT_NUMBER_OR_ID/locations/global:detectLanguage"

PowerShell (Windows) Note: The following command assumes that you have logged in to the gcloud CLI with your user account by running gcloud init or gcloud auth login . You can check the currently active account by running gcloud auth list.

Save the request body in a file named request.json, and execute the following command:

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred"; "x-goog-user-project" = "PROJECT_NUMBER_OR_ID" }

Invoke-WebRequest `

-Method POST `
-Headers $headers `
-ContentType: "application/json; charset=utf-8" `
-InFile request.json `
-Uri "https://translation.googleapis.com/v3/projects/PROJECT_NUMBER_OR_ID/locations/global:detectLanguage" | Select-Object -Expand Content

You should receive a JSON response similar to the following:

{
  "languages": [
    {
      "languageCode": "ru",
      "confidence": 1
    }
  ]
}

In the response, languageCode provides the language code of the language detected. confidence is a range from 0 to 1. 1 is 100% confident. Go

Before trying this sample, follow the Go setup instructions in the Cloud Translation quickstart using client libraries. For more information, see the Cloud Translation Go API reference documentation.

To authenticate to Cloud Translation, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Java

Before trying this sample, follow the Java setup instructions in the Cloud Translation quickstart using client libraries. For more information, see the Cloud Translation Java API reference documentation.

To authenticate to Cloud Translation, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Node.js

Before trying this sample, follow the Node.js setup instructions in the Cloud Translation quickstart using client libraries. For more information, see the Cloud Translation Node.js API reference documentation.

To authenticate to Cloud Translation, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Python

Before trying this sample, follow the Python setup instructions in the Cloud Translation quickstart using client libraries. For more information, see the Cloud Translation Python API reference documentation.

To authenticate to Cloud Translation, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Additional languages

C#: Please follow the C# setup instructions on the client libraries page and then visit the Cloud Translation reference documentation for .NET.

PHP: Please follow the PHP setup instructions on the client libraries page and then visit the Cloud Translation reference documentation for PHP.

Ruby: Please follow the Ruby setup instructions on the client libraries page and then visit the Cloud Translation reference documentation for Ruby.

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