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<?php |
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namespace LeKoala\Multilingual; |
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use Exception; |
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/** |
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* A simple ollama client to query towerinstruct model |
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* @link https://ollama.com/thinkverse/towerinstruct |
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* @link https://huggingface.co/Unbabel/TowerInstruct-7B-v0.2 |
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*/ |
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class OllamaTowerInstruct |
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{ |
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final public const BASE_URL = 'http://localhost:11434'; |
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final public const BASE_MODEL = 'thinkverse/towerinstruct'; |
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protected ?string $model; |
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protected ?string $url; |
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public function __construct(?string $model = null, ?string $url = null) |
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{ |
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$this->model = $model ?? self::BASE_MODEL; |
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$this->url = $url ?? self::BASE_URL; |
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} |
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public function expandLang(string $lang): string |
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{ |
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$lc = strtolower($lang); |
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// English, Portuguese, Spanish, French, German, Dutch, Italian, Korean, Chinese, Russian |
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return match ($lc) { |
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'en' => 'English', |
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'fr' => 'French', |
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'nl' => 'Dutch', |
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'it' => 'Italian', |
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'de' => 'German', |
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'pt' => 'Portuguese', |
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'ko' => 'Korean', |
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'zh' => 'Chinese', |
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'ru' => 'Russian', |
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default => $lang |
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}; |
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} |
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public function translate(?string $string, string $to, string $from) |
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{ |
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/* |
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messages = [ |
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{"role": "user", "content": "Translate the following text from Portuguese into English.\nPortuguese: Um grupo de investigadores lançou um novo modelo para tarefas relacionadas com tradução.\nEnglish:"}, |
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] |
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*/ |
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$string = $string ?? ''; |
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$from = $this->expandLang($from); |
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$to = $this->expandLang($to); |
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$prompt = "Translate the following text from $from into $to and keep variables between {} as is.\n$from: $string\n$to:"; |
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$result = $this->generate($prompt); |
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$response = $result['response'] ?? ''; |
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// Avoid extra space |
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$response = trim($response); |
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// Make sure we don't get any extra ending dot |
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$endsWithDot = str_ends_with($string, '.'); |
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$translationEndsWithDot = str_ends_with($response, '.'); |
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if (!$endsWithDot && $translationEndsWithDot) { |
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$response = rtrim($response, '.'); |
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} |
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// No crazy {} |
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$includesParen = str_contains($string, '{}'); |
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$translationIncludesParen = str_contains($string, '{}'); |
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if (!$includesParen && $translationIncludesParen) { |
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$response = trim(str_replace('{}', '', $response)); |
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} |
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// No spaces in { } |
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$response = str_replace('{ ', '{', $response); |
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$response = str_replace(' }', '}', $response); |
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return $response; |
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} |
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/** |
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* @param null|array<int> $context |
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* @return array{model:string,created_at:string,response:string,done:bool,done_reason:string,context:array<int>,total_duration:int,load_duration:int,prompt_eval_count:int,prompt_eval_duration:int,eval_count:int,eval_duration:int} |
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*/ |
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public function generate(string $prompt, ?array $context = null) |
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{ |
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$data = [ |
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'model' => $this->model, |
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'prompt' => $prompt, |
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'stream' => false, |
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]; |
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if (!empty($context)) { |
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$data['context'] = $context; |
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} |
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$url = $this->url . '/api/generate'; |
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$ch = curl_init(); |
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curl_setopt($ch, CURLOPT_URL, $url); |
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curl_setopt($ch, CURLOPT_POST, true); |
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curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data)); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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$output = curl_exec($ch); |
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curl_close($ch); |
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$decoded = json_decode($output, true); |
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if (!$decoded) { |
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throw new Exception("Failed to decode json: " . json_last_error_msg()); |
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} |
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//@phpstan-ignore-next-line |
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return $decoded; |
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} |
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} |
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