chore: add .gitignore

.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+d10n
+d10n.exe

config/config.go

@@ -8,16 +8,29 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+// ChunkConfig stores configuration for chunked translation
+type ChunkConfig struct {
+	Enabled bool   `yaml:"enabled"`
+	Size    int    `yaml:"size"`
+	Prompt  string `yaml:"prompt"`
+	Context int    `yaml:"context"`
+}
+
 // Config stores the application configuration
 type Config struct {
-	APIBase      string `yaml:"api_base"`
-	APIKey       string `yaml:"api_key"`
-	Model        string `yaml:"model"`
-	SystemPrompt string `yaml:"system_prompt"`
+	APIBase      string      `yaml:"api_base"`
+	APIKey       string      `yaml:"api_key"`
+	Model        string      `yaml:"model"`
+	SystemPrompt string      `yaml:"system_prompt"`
+	// Concurrency related settings
+	Concurrency  int         `yaml:"concurrency"`
+	// Chunk related settings
+	Chunk        ChunkConfig `yaml:"chunk"`
 }
 
 // Default system prompt as a placeholder
 const DefaultSystemPrompt = "Placeholder"
+const DefaultChunkPrompt = "Please continue translation"
 
 // LoadConfig loads configuration from ~/.config/d10n.yaml
 func LoadConfig() (*Config, error) {
@@ -34,6 +47,13 @@ func LoadConfig() (*Config, error) {
 	if _, err := os.Stat(configPath); os.IsNotExist(err) {
 		return &Config{
 			SystemPrompt: DefaultSystemPrompt,
+			Concurrency:  3,                   // Default concurrency
+			Chunk: ChunkConfig{
+				Enabled: false,               // Chunking disabled by default
+				Size:    10240,               // Default chunk size in tokens
+				Prompt:  DefaultChunkPrompt,  // Default chunk prompt
+				Context: 2,                   // Default context size
+			},
 		}, nil
 	}
 
@@ -49,10 +69,28 @@ func LoadConfig() (*Config, error) {
 		return nil, fmt.Errorf("could not parse config file: %w", err)
 	}
 
-	// Set default system prompt if not specified
+	// Set default values if not specified
 	if config.SystemPrompt == "" {
 		config.SystemPrompt = DefaultSystemPrompt
 	}
 	
+	// Set default for concurrency
+	if config.Concurrency <= 0 {
+		config.Concurrency = 3
+	}
+	
+	// Set defaults for chunk settings
+	if config.Chunk.Size <= 0 {
+		config.Chunk.Size = 10240
+	}
+	
+	if config.Chunk.Prompt == "" {
+		config.Chunk.Prompt = DefaultChunkPrompt
+	}
+	
+	if config.Chunk.Context <= 0 {
+		config.Chunk.Context = 2
+	}
+
 	return &config, nil
 }

go.mod

@@ -3,3 +3,11 @@ module github.com/wholetrans/d10n
 go 1.24.1
 
 require gopkg.in/yaml.v3 v3.0.1
+
+require (
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/schollz/progressbar/v3 v3.18.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/term v0.28.0 // indirect
+)

go.sum

@@ -1,3 +1,13 @@
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2EmQ4l5rM/4FEfDWcRD+abF5XlKShorW5LRoQ=
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/schollz/progressbar/v3 v3.18.0 h1:uXdoHABRFmNIjUfte/Ex7WtuyVslrw2wVPQmCN62HpA=
+github.com/schollz/progressbar/v3 v3.18.0/go.mod h1:IsO3lpbaGuzh8zIMzgY3+J8l4C8GjO0Y9S69eFvNsec=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.28.0 h1:/Ts8HFuMR2E6IP/jlo7QVLZHggjKQbhu/7H0LJFr3Gg=
+golang.org/x/term v0.28.0/go.mod h1:Sw/lC2IAUZ92udQNf3WodGtn4k/XoLyZoh8v/8uiwek=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

main.go

@@ -6,7 +6,9 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 
+	"github.com/schollz/progressbar/v3"
 	"github.com/wholetrans/d10n/config"
 	"github.com/wholetrans/d10n/translator"
 )
@@ -32,6 +34,15 @@ func main() {
 	systemPromptPtr := flagSet.String("system-prompt", "", "System prompt for the model")
 	formatPtr := flagSet.String("format", "", "File format to process (e.g., md, txt)")
 	
+	// Concurrency flag
+	concurrencyPtr := flagSet.Int("concurrency", 0, "Number of concurrent translation tasks (default is 3)")
+	
+	// Chunking flags
+	chunkEnabledPtr := flagSet.Bool("chunk", false, "Enable chunked translation")
+	chunkSizePtr := flagSet.Int("chunk-size", 0, "Size of each chunk in tokens (default is 10240)")
+	chunkPromptPtr := flagSet.String("chunk-prompt", "", "Prompt to use for continuing translation (default is 'Please continue translation')")
+	chunkContextPtr := flagSet.Int("chunk-context", 0, "Number of chunks to include as context (default is 2)")
+	
 	// Parse flags
 	if err := flagSet.Parse(os.Args[2:]); err != nil {
 		fmt.Println("Error parsing arguments:", err)
@@ -75,6 +86,28 @@ func main() {
 		cfg.SystemPrompt = *systemPromptPtr
 	}
 	
+	// Set concurrency options
+	if *concurrencyPtr > 0 {
+		cfg.Concurrency = *concurrencyPtr
+	}
+	
+	// Set chunking options from command line arguments
+	if *chunkEnabledPtr {
+		cfg.Chunk.Enabled = true
+	}
+	
+	if *chunkSizePtr > 0 {
+		cfg.Chunk.Size = *chunkSizePtr
+	}
+	
+	if *chunkPromptPtr != "" {
+		cfg.Chunk.Prompt = *chunkPromptPtr
+	}
+	
+	if *chunkContextPtr > 0 {
+		cfg.Chunk.Context = *chunkContextPtr
+	}
+	
 	// Set target path if not provided
 	targetPath := *targetPathPtr
 	if targetPath == "" {
@@ -118,6 +151,11 @@ func printUsage() {
 	fmt.Println("  -api-base <url>         API base URL for OpenAI compatible service")
 	fmt.Println("  -system-prompt <prompt> System prompt for the model")
 	fmt.Println("  -format <ext>           File format to process (e.g., md, txt)")
+	fmt.Println("  -concurrency <num>      Number of concurrent translation tasks (default: 3)")
+	fmt.Println("  -chunk                  Enable chunked translation")
+	fmt.Println("  -chunk-size <tokens>    Size of each chunk in tokens (default: 10240)")
+	fmt.Println("  -chunk-prompt <prompt>  Prompt for continuing translation (default: 'Please continue translation')")
+	fmt.Println("  -chunk-context <num>    Number of chunks to include as context (default: 2)")
 }
 
 func processFile(sourcePath, targetPath, sourceLanguage, targetLanguage string, trans *translator.Translator) error {
@@ -126,7 +164,7 @@ func processFile(sourcePath, targetPath, sourceLanguage, targetLanguage string,
 		return fmt.Errorf("error reading file %s: %w", sourcePath, err)
 	}
 	
-	translatedContent, err := trans.Translate(string(content), sourceLanguage, targetLanguage)
+	translatedContent, err := trans.Translate(string(content), sourceLanguage, targetLanguage, sourcePath)
 	if err != nil {
 		return fmt.Errorf("error translating file %s: %w", sourcePath, err)
 	}
@@ -142,7 +180,9 @@ func processFile(sourcePath, targetPath, sourceLanguage, targetLanguage string,
 		return fmt.Errorf("error writing to file %s: %w", targetPath, err)
 	}
 	
-	fmt.Printf("Translated %s to %s\n", sourcePath, targetPath)
+	// Remove the progress bar for this file
+	trans.RemoveProgressBar(sourcePath)
+	
 	return nil
 }
 
@@ -185,7 +225,29 @@ func processDirectory(sourcePath, targetPath, sourceLanguage, targetLanguage, fo
 	}
 	fmt.Println()
 	
-	// Process each matched file with progress updates
+	// Create overall progress bar
+	overallBar := progressbar.NewOptions(len(matchedFiles),
+		progressbar.OptionSetDescription("[Overall Progress]"),
+		progressbar.OptionShowCount(),
+		progressbar.OptionSetTheme(progressbar.Theme{
+			Saucer:        "#",
+			SaucerHead:    ">",
+			SaucerPadding: "-",
+			BarStart:      "[",
+			BarEnd:        "]",
+		}),
+	)
+	
+	// Set up a worker pool for concurrent processing
+	var (
+		wg          sync.WaitGroup
+		mutex       sync.Mutex
+		errors      []error
+		concurrency = trans.GetConcurrency()
+		semaphore   = make(chan struct{}, concurrency)
+	)
+	
+	// Process files concurrently
 	for i, path := range matchedFiles {
 		// Compute relative path from source
 		relPath, err := filepath.Rel(sourcePath, path)
@@ -202,14 +264,39 @@ func processDirectory(sourcePath, targetPath, sourceLanguage, targetLanguage, fo
 			return fmt.Errorf("error creating target directory %s: %w", targetFileDir, err)
 		}
 		
-		// Display progress
-		fmt.Printf("[%d/%d] Translating: %s\n", i+1, len(matchedFiles), relPath)
+		// Process individual file concurrently
+		wg.Add(1)
+		go func(idx int, sourcePath, targetPath, relPath string) {
+			defer wg.Done()
 			
-		// Process individual file
-		err = processFile(path, targetFilePath, sourceLanguage, targetLanguage, trans)
-		if err != nil {
-			return err
-		}
+			// Acquire semaphore (limit concurrency)
+			semaphore <- struct{}{}
+			defer func() { <-semaphore }()
+			
+			// Process the file
+			err := processFile(sourcePath, targetPath, sourceLanguage, targetLanguage, trans)
+			
+			// Update overall progress bar
+			mutex.Lock()
+			overallBar.Add(1)
+			if err != nil {
+				errors = append(errors, err)
+				fmt.Printf("Error translating %s: %v\n", relPath, err)
+			}
+			mutex.Unlock()
+		}(i+1, path, targetFilePath, relPath)
+	}
+	
+	// Wait for all translations to complete
+	wg.Wait()
+	
+	// Complete the overall progress bar
+	overallBar.Finish()
+	fmt.Println() // Add some spacing after progress bars
+	
+	// Check if any errors occurred
+	if len(errors) > 0 {
+		return fmt.Errorf("encountered %d errors during translation", len(errors))
 	}
 	
 	return nil

sample_config.yaml

@@ -5,3 +5,13 @@ api_base: "https://api.openai.com"  # OpenAI-compatible API base URL
 api_key: "your-api-key-here"        # API key for the service
 model: "gpt-4o"                     # Model to use for translation
 system_prompt: "You are a professional translator. You are translating from $SOURCE_LANG to $TARGET_LANG. Maintain the original formatting and structure of the text while translating it accurately."  # Custom system prompt with variables
+
+# Concurrency settings
+concurrency: 3                      # Number of concurrent translation tasks (default: 3)
+
+# Chunked translation settings
+chunk:
+  enabled: false                    # Whether to enable chunked translation (default: false)
+  size: 10240                       # Size of each chunk in tokens (default: 10240)
+  prompt: "Please continue translation"  # Prompt to use for continuing translation
+  context: 2                        # Number of chunks to include as context (default: 2)

translator/translator.go

@@ -4,15 +4,21 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"math"
 	"net/http"
 	"strings"
+	"sync"
+	"unicode/utf8"
 
+	"github.com/schollz/progressbar/v3"
 	"github.com/wholetrans/d10n/config"
 )
 
 // Translator handles communication with the OpenAI API
 type Translator struct {
 	config *config.Config
+	mutex  sync.Mutex
+	progressBars map[string]*progressbar.ProgressBar
 }
 
 // Message represents a message in the OpenAI chat format
@@ -43,11 +49,38 @@ type ChatResponse struct {
 func NewTranslator(cfg *config.Config) *Translator {
 	return &Translator{
 		config: cfg,
+		progressBars: make(map[string]*progressbar.ProgressBar),
 	}
 }
 
+// GetConcurrency returns the configured concurrency level
+func (t *Translator) GetConcurrency() int {
+	return t.config.Concurrency
+}
+
 // Translate translates content from sourceLanguage to targetLanguage
-func (t *Translator) Translate(content, sourceLanguage, targetLanguage string) (string, error) {
+func (t *Translator) Translate(content, sourceLanguage, targetLanguage string, filePath string) (string, error) {
+	// If chunking is not enabled, translate the whole content at once
+	if !t.config.Chunk.Enabled {
+		return t.translateSingle(content, sourceLanguage, targetLanguage)
+	}
+	
+	// Split content into chunks
+	chunks, err := t.splitIntoChunks(content)
+	if err != nil {
+		return "", fmt.Errorf("error splitting content into chunks: %w", err)
+	}
+	
+	// If there's only one chunk, translate it directly
+	if len(chunks) == 1 {
+		return t.translateSingle(chunks[0], sourceLanguage, targetLanguage)
+	}
+	
+	return t.translateChunks(chunks, sourceLanguage, targetLanguage, filePath)
+}
+
+// translateSingle translates a single content block
+func (t *Translator) translateSingle(content, sourceLanguage, targetLanguage string) (string, error) {
 	messages := []Message{
 		{
 			Role:    "system",
@@ -59,6 +92,108 @@ func (t *Translator) Translate(content, sourceLanguage, targetLanguage string) (
 		},
 	}
 
+	return t.sendChatRequest(messages)
+}
+
+// translateChunks translates content in chunks with context
+func (t *Translator) translateChunks(chunks []string, sourceLanguage, targetLanguage, filePath string) (string, error) {
+	systemPrompt := t.getSystemPrompt(sourceLanguage, targetLanguage)
+	var translations []string
+	contextStart := 0
+	
+	// Create a progress bar for this file if it doesn't exist
+	t.mutex.Lock()
+	progressBarID := filePath
+	if _, exists := t.progressBars[progressBarID]; !exists {
+		t.progressBars[progressBarID] = progressbar.NewOptions(len(chunks),
+			progressbar.OptionSetDescription(fmt.Sprintf("[Chunks: %s]", filePath)),
+			progressbar.OptionShowCount(),
+			progressbar.OptionSetTheme(progressbar.Theme{
+				Saucer:        "=",
+				SaucerHead:    ">",
+				SaucerPadding: " ",
+				BarStart:      "[",
+				BarEnd:        "]",
+			}),
+		)
+	}
+	progressBar := t.progressBars[progressBarID]
+	t.mutex.Unlock()
+	
+	// Process each chunk
+	for i, chunk := range chunks {
+		// Build messages with context
+		messages := []Message{
+			{
+				Role:    "system",
+				Content: systemPrompt,
+			},
+		}
+		
+		// Add context chunks and their translations
+		for j := contextStart; j < i; j++ {
+			if j >= 0 && j < len(chunks) {
+				messages = append(messages, Message{
+					Role:    "user",
+					Content: chunks[j],
+				})
+				
+				if j-contextStart < len(translations) {
+					messages = append(messages, Message{
+						Role:    "assistant",
+						Content: translations[j-contextStart],
+					})
+				}
+			}
+		}
+		
+		// Add current chunk to translate
+		messages = append(messages, Message{
+			Role:    "user",
+			Content: chunk,
+		})
+		
+		// For chunks after the first one, add the continuation prompt
+		if i > 0 {
+			messages = append(messages, Message{
+				Role:    "user",
+				Content: t.config.Chunk.Prompt,
+			})
+		}
+		
+		// Send request
+		translation, err := t.sendChatRequest(messages)
+		if err != nil {
+			return "", fmt.Errorf("error translating chunk %d: %w", i+1, err)
+		}
+		
+		translations = append(translations, translation)
+		
+		// Update progress bar
+		progressBar.Add(1)
+		
+		// Slide context window if needed
+		if i >= t.config.Chunk.Context {
+			contextStart++
+		}
+	}
+	
+	// Finish and clear the progress bar
+	progressBar.Finish()
+	
+	// Combine translations
+	return strings.Join(translations, "\n"), nil
+}
+
+// RemoveProgressBar removes a progress bar by its ID
+func (t *Translator) RemoveProgressBar(id string) {
+	t.mutex.Lock()
+	defer t.mutex.Unlock()
+	delete(t.progressBars, id)
+}
+
+// sendChatRequest sends a chat completion request to the OpenAI API
+func (t *Translator) sendChatRequest(messages []Message) (string, error) {
 	// Create the API request
 	requestBody := ChatRequest{
 		Model:    t.config.Model,
@@ -106,6 +241,40 @@ func (t *Translator) Translate(content, sourceLanguage, targetLanguage string) (
 	return responseBody.Choices[0].Message.Content, nil
 }
 
+// splitIntoChunks splits content into chunks based on token size
+func (t *Translator) splitIntoChunks(content string) ([]string, error) {
+	lines := strings.Split(content, "\n")
+	var chunks []string
+	var currentChunk strings.Builder
+	currentTokens := 0
+	
+	for _, line := range lines {
+		// Estimate tokens in the line (approximation: ~4 characters per token)
+		lineTokens := int(math.Ceil(float64(utf8.RuneCountInString(line)) / 4.0))
+		
+		// If adding this line would exceed chunk size, start a new chunk
+		if currentTokens > 0 && currentTokens+lineTokens > t.config.Chunk.Size {
+			chunks = append(chunks, currentChunk.String())
+			currentChunk.Reset()
+			currentTokens = 0
+		}
+		
+		// Add line to current chunk
+		if currentChunk.Len() > 0 {
+			currentChunk.WriteString("\n")
+		}
+		currentChunk.WriteString(line)
+		currentTokens += lineTokens
+	}
+	
+	// Add the last chunk if it's not empty
+	if currentChunk.Len() > 0 {
+		chunks = append(chunks, currentChunk.String())
+	}
+	
+	return chunks, nil
+}
+
 // getSystemPrompt constructs the system prompt for translation
 func (t *Translator) getSystemPrompt(sourceLanguage, targetLanguage string) string {
 	basePrompt := t.config.SystemPrompt