Files
CLIProxyAPI/internal/translator/openai/claude/openai_claude_response.go

696 lines
26 KiB
Go

// Package claude provides response translation functionality for OpenAI to Anthropic API.
// This package handles the conversion of OpenAI Chat Completions API responses into Anthropic API-compatible
// JSON format, transforming streaming events and non-streaming responses into the format
// expected by Anthropic API clients. It supports both streaming and non-streaming modes,
// handling text content, tool calls, and usage metadata appropriately.
package claude
import (
"bytes"
"context"
"fmt"
"strings"
"github.com/router-for-me/CLIProxyAPI/v6/internal/util"
"github.com/tidwall/gjson"
"github.com/tidwall/sjson"
)
var (
dataTag = []byte("data:")
)
// ConvertOpenAIResponseToAnthropicParams holds parameters for response conversion
type ConvertOpenAIResponseToAnthropicParams struct {
MessageID string
Model string
CreatedAt int64
// Content accumulator for streaming
ContentAccumulator strings.Builder
// Tool calls accumulator for streaming
ToolCallsAccumulator map[int]*ToolCallAccumulator
// Track if text content block has been started
TextContentBlockStarted bool
// Track if thinking content block has been started
ThinkingContentBlockStarted bool
// Track finish reason for later use
FinishReason string
// Track if content blocks have been stopped
ContentBlocksStopped bool
// Track if message_delta has been sent
MessageDeltaSent bool
// Track if message_start has been sent
MessageStarted bool
// Track if message_stop has been sent
MessageStopSent bool
// Tool call content block index mapping
ToolCallBlockIndexes map[int]int
// Index assigned to text content block
TextContentBlockIndex int
// Index assigned to thinking content block
ThinkingContentBlockIndex int
// Next available content block index
NextContentBlockIndex int
}
// ToolCallAccumulator holds the state for accumulating tool call data
type ToolCallAccumulator struct {
ID string
Name string
Arguments strings.Builder
}
// ConvertOpenAIResponseToClaude converts OpenAI streaming response format to Anthropic API format.
// This function processes OpenAI streaming chunks and transforms them into Anthropic-compatible JSON responses.
// It handles text content, tool calls, and usage metadata, outputting responses that match the Anthropic API format.
//
// Parameters:
// - ctx: The context for the request.
// - modelName: The name of the model.
// - rawJSON: The raw JSON response from the OpenAI API.
// - param: A pointer to a parameter object for the conversion.
//
// Returns:
// - []string: A slice of strings, each containing an Anthropic-compatible JSON response.
func ConvertOpenAIResponseToClaude(_ context.Context, _ string, originalRequestRawJSON, requestRawJSON, rawJSON []byte, param *any) []string {
if *param == nil {
*param = &ConvertOpenAIResponseToAnthropicParams{
MessageID: "",
Model: "",
CreatedAt: 0,
ContentAccumulator: strings.Builder{},
ToolCallsAccumulator: nil,
TextContentBlockStarted: false,
ThinkingContentBlockStarted: false,
FinishReason: "",
ContentBlocksStopped: false,
MessageDeltaSent: false,
ToolCallBlockIndexes: make(map[int]int),
TextContentBlockIndex: -1,
ThinkingContentBlockIndex: -1,
NextContentBlockIndex: 0,
}
}
if !bytes.HasPrefix(rawJSON, dataTag) {
return []string{}
}
rawJSON = bytes.TrimSpace(rawJSON[5:])
// Check if this is the [DONE] marker
rawStr := strings.TrimSpace(string(rawJSON))
if rawStr == "[DONE]" {
return convertOpenAIDoneToAnthropic((*param).(*ConvertOpenAIResponseToAnthropicParams))
}
streamResult := gjson.GetBytes(originalRequestRawJSON, "stream")
if !streamResult.Exists() || (streamResult.Exists() && streamResult.Type == gjson.False) {
return convertOpenAINonStreamingToAnthropic(rawJSON)
} else {
return convertOpenAIStreamingChunkToAnthropic(rawJSON, (*param).(*ConvertOpenAIResponseToAnthropicParams))
}
}
// convertOpenAIStreamingChunkToAnthropic converts OpenAI streaming chunk to Anthropic streaming events
func convertOpenAIStreamingChunkToAnthropic(rawJSON []byte, param *ConvertOpenAIResponseToAnthropicParams) []string {
root := gjson.ParseBytes(rawJSON)
var results []string
// Initialize parameters if needed
if param.MessageID == "" {
param.MessageID = root.Get("id").String()
}
if param.Model == "" {
param.Model = root.Get("model").String()
}
if param.CreatedAt == 0 {
param.CreatedAt = root.Get("created").Int()
}
// Emit message_start on the very first chunk, regardless of whether it has a role field.
// Some providers (like Copilot) may send tool_calls in the first chunk without a role field.
if delta := root.Get("choices.0.delta"); delta.Exists() {
if !param.MessageStarted {
// Send message_start event
messageStartJSON := `{"type":"message_start","message":{"id":"","type":"message","role":"assistant","model":"","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0}}}`
messageStartJSON, _ = sjson.Set(messageStartJSON, "message.id", param.MessageID)
messageStartJSON, _ = sjson.Set(messageStartJSON, "message.model", param.Model)
results = append(results, "event: message_start\ndata: "+messageStartJSON+"\n\n")
param.MessageStarted = true
// Don't send content_block_start for text here - wait for actual content
}
// Handle reasoning content delta
if reasoning := delta.Get("reasoning_content"); reasoning.Exists() {
for _, reasoningText := range collectOpenAIReasoningTexts(reasoning) {
if reasoningText == "" {
continue
}
stopTextContentBlock(param, &results)
if !param.ThinkingContentBlockStarted {
if param.ThinkingContentBlockIndex == -1 {
param.ThinkingContentBlockIndex = param.NextContentBlockIndex
param.NextContentBlockIndex++
}
contentBlockStartJSON := `{"type":"content_block_start","index":0,"content_block":{"type":"thinking","thinking":""}}`
contentBlockStartJSON, _ = sjson.Set(contentBlockStartJSON, "index", param.ThinkingContentBlockIndex)
results = append(results, "event: content_block_start\ndata: "+contentBlockStartJSON+"\n\n")
param.ThinkingContentBlockStarted = true
}
thinkingDeltaJSON := `{"type":"content_block_delta","index":0,"delta":{"type":"thinking_delta","thinking":""}}`
thinkingDeltaJSON, _ = sjson.Set(thinkingDeltaJSON, "index", param.ThinkingContentBlockIndex)
thinkingDeltaJSON, _ = sjson.Set(thinkingDeltaJSON, "delta.thinking", reasoningText)
results = append(results, "event: content_block_delta\ndata: "+thinkingDeltaJSON+"\n\n")
}
}
// Handle content delta
if content := delta.Get("content"); content.Exists() && content.String() != "" {
// Send content_block_start for text if not already sent
if !param.TextContentBlockStarted {
stopThinkingContentBlock(param, &results)
if param.TextContentBlockIndex == -1 {
param.TextContentBlockIndex = param.NextContentBlockIndex
param.NextContentBlockIndex++
}
contentBlockStartJSON := `{"type":"content_block_start","index":0,"content_block":{"type":"text","text":""}}`
contentBlockStartJSON, _ = sjson.Set(contentBlockStartJSON, "index", param.TextContentBlockIndex)
results = append(results, "event: content_block_start\ndata: "+contentBlockStartJSON+"\n\n")
param.TextContentBlockStarted = true
}
contentDeltaJSON := `{"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":""}}`
contentDeltaJSON, _ = sjson.Set(contentDeltaJSON, "index", param.TextContentBlockIndex)
contentDeltaJSON, _ = sjson.Set(contentDeltaJSON, "delta.text", content.String())
results = append(results, "event: content_block_delta\ndata: "+contentDeltaJSON+"\n\n")
// Accumulate content
param.ContentAccumulator.WriteString(content.String())
}
// Handle tool calls
if toolCalls := delta.Get("tool_calls"); toolCalls.Exists() && toolCalls.IsArray() {
if param.ToolCallsAccumulator == nil {
param.ToolCallsAccumulator = make(map[int]*ToolCallAccumulator)
}
toolCalls.ForEach(func(_, toolCall gjson.Result) bool {
index := int(toolCall.Get("index").Int())
blockIndex := param.toolContentBlockIndex(index)
// Initialize accumulator if needed
if _, exists := param.ToolCallsAccumulator[index]; !exists {
param.ToolCallsAccumulator[index] = &ToolCallAccumulator{}
}
accumulator := param.ToolCallsAccumulator[index]
// Handle tool call ID
if id := toolCall.Get("id"); id.Exists() {
accumulator.ID = id.String()
}
// Handle function name
if function := toolCall.Get("function"); function.Exists() {
if name := function.Get("name"); name.Exists() {
accumulator.Name = name.String()
stopThinkingContentBlock(param, &results)
stopTextContentBlock(param, &results)
// Send content_block_start for tool_use
contentBlockStartJSON := `{"type":"content_block_start","index":0,"content_block":{"type":"tool_use","id":"","name":"","input":{}}}`
contentBlockStartJSON, _ = sjson.Set(contentBlockStartJSON, "index", blockIndex)
contentBlockStartJSON, _ = sjson.Set(contentBlockStartJSON, "content_block.id", accumulator.ID)
contentBlockStartJSON, _ = sjson.Set(contentBlockStartJSON, "content_block.name", accumulator.Name)
results = append(results, "event: content_block_start\ndata: "+contentBlockStartJSON+"\n\n")
}
// Handle function arguments
if args := function.Get("arguments"); args.Exists() {
argsText := args.String()
if argsText != "" {
accumulator.Arguments.WriteString(argsText)
}
}
}
return true
})
}
}
// Handle finish_reason (but don't send message_delta/message_stop yet)
if finishReason := root.Get("choices.0.finish_reason"); finishReason.Exists() && finishReason.String() != "" {
reason := finishReason.String()
param.FinishReason = reason
// Send content_block_stop for thinking content if needed
if param.ThinkingContentBlockStarted {
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", param.ThinkingContentBlockIndex)
results = append(results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
param.ThinkingContentBlockStarted = false
param.ThinkingContentBlockIndex = -1
}
// Send content_block_stop for text if text content block was started
stopTextContentBlock(param, &results)
// Send content_block_stop for any tool calls
if !param.ContentBlocksStopped {
for index := range param.ToolCallsAccumulator {
accumulator := param.ToolCallsAccumulator[index]
blockIndex := param.toolContentBlockIndex(index)
// Send complete input_json_delta with all accumulated arguments
if accumulator.Arguments.Len() > 0 {
inputDeltaJSON := `{"type":"content_block_delta","index":0,"delta":{"type":"input_json_delta","partial_json":""}}`
inputDeltaJSON, _ = sjson.Set(inputDeltaJSON, "index", blockIndex)
inputDeltaJSON, _ = sjson.Set(inputDeltaJSON, "delta.partial_json", util.FixJSON(accumulator.Arguments.String()))
results = append(results, "event: content_block_delta\ndata: "+inputDeltaJSON+"\n\n")
}
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", blockIndex)
results = append(results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
delete(param.ToolCallBlockIndexes, index)
}
param.ContentBlocksStopped = true
}
// Don't send message_delta here - wait for usage info or [DONE]
}
// Handle usage information separately (this comes in a later chunk)
// Only process if usage has actual values (not null)
if param.FinishReason != "" {
usage := root.Get("usage")
var inputTokens, outputTokens int64
if usage.Exists() && usage.Type != gjson.Null {
// Check if usage has actual token counts
promptTokens := usage.Get("prompt_tokens")
completionTokens := usage.Get("completion_tokens")
if promptTokens.Exists() && completionTokens.Exists() {
inputTokens = promptTokens.Int()
outputTokens = completionTokens.Int()
}
}
// Send message_delta with usage
messageDeltaJSON := `{"type":"message_delta","delta":{"stop_reason":"","stop_sequence":null},"usage":{"input_tokens":0,"output_tokens":0}}`
messageDeltaJSON, _ = sjson.Set(messageDeltaJSON, "delta.stop_reason", mapOpenAIFinishReasonToAnthropic(param.FinishReason))
messageDeltaJSON, _ = sjson.Set(messageDeltaJSON, "usage.input_tokens", inputTokens)
messageDeltaJSON, _ = sjson.Set(messageDeltaJSON, "usage.output_tokens", outputTokens)
results = append(results, "event: message_delta\ndata: "+messageDeltaJSON+"\n\n")
param.MessageDeltaSent = true
emitMessageStopIfNeeded(param, &results)
}
return results
}
// convertOpenAIDoneToAnthropic handles the [DONE] marker and sends final events
func convertOpenAIDoneToAnthropic(param *ConvertOpenAIResponseToAnthropicParams) []string {
var results []string
// Ensure all content blocks are stopped before final events
if param.ThinkingContentBlockStarted {
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", param.ThinkingContentBlockIndex)
results = append(results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
param.ThinkingContentBlockStarted = false
param.ThinkingContentBlockIndex = -1
}
stopTextContentBlock(param, &results)
if !param.ContentBlocksStopped {
for index := range param.ToolCallsAccumulator {
accumulator := param.ToolCallsAccumulator[index]
blockIndex := param.toolContentBlockIndex(index)
if accumulator.Arguments.Len() > 0 {
inputDeltaJSON := `{"type":"content_block_delta","index":0,"delta":{"type":"input_json_delta","partial_json":""}}`
inputDeltaJSON, _ = sjson.Set(inputDeltaJSON, "index", blockIndex)
inputDeltaJSON, _ = sjson.Set(inputDeltaJSON, "delta.partial_json", util.FixJSON(accumulator.Arguments.String()))
results = append(results, "event: content_block_delta\ndata: "+inputDeltaJSON+"\n\n")
}
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", blockIndex)
results = append(results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
delete(param.ToolCallBlockIndexes, index)
}
param.ContentBlocksStopped = true
}
// If we haven't sent message_delta yet (no usage info was received), send it now
if param.FinishReason != "" && !param.MessageDeltaSent {
messageDeltaJSON := `{"type":"message_delta","delta":{"stop_reason":"","stop_sequence":null}}`
messageDeltaJSON, _ = sjson.Set(messageDeltaJSON, "delta.stop_reason", mapOpenAIFinishReasonToAnthropic(param.FinishReason))
results = append(results, "event: message_delta\ndata: "+messageDeltaJSON+"\n\n")
param.MessageDeltaSent = true
}
emitMessageStopIfNeeded(param, &results)
return results
}
// convertOpenAINonStreamingToAnthropic converts OpenAI non-streaming response to Anthropic format
func convertOpenAINonStreamingToAnthropic(rawJSON []byte) []string {
root := gjson.ParseBytes(rawJSON)
out := `{"id":"","type":"message","role":"assistant","model":"","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0}}`
out, _ = sjson.Set(out, "id", root.Get("id").String())
out, _ = sjson.Set(out, "model", root.Get("model").String())
// Process message content and tool calls
if choices := root.Get("choices"); choices.Exists() && choices.IsArray() && len(choices.Array()) > 0 {
choice := choices.Array()[0] // Take first choice
reasoningNode := choice.Get("message.reasoning_content")
for _, reasoningText := range collectOpenAIReasoningTexts(reasoningNode) {
if reasoningText == "" {
continue
}
block := `{"type":"thinking","thinking":""}`
block, _ = sjson.Set(block, "thinking", reasoningText)
out, _ = sjson.SetRaw(out, "content.-1", block)
}
// Handle text content
if content := choice.Get("message.content"); content.Exists() && content.String() != "" {
block := `{"type":"text","text":""}`
block, _ = sjson.Set(block, "text", content.String())
out, _ = sjson.SetRaw(out, "content.-1", block)
}
// Handle tool calls
if toolCalls := choice.Get("message.tool_calls"); toolCalls.Exists() && toolCalls.IsArray() {
toolCalls.ForEach(func(_, toolCall gjson.Result) bool {
toolUseBlock := `{"type":"tool_use","id":"","name":"","input":{}}`
toolUseBlock, _ = sjson.Set(toolUseBlock, "id", toolCall.Get("id").String())
toolUseBlock, _ = sjson.Set(toolUseBlock, "name", toolCall.Get("function.name").String())
argsStr := util.FixJSON(toolCall.Get("function.arguments").String())
if argsStr != "" && gjson.Valid(argsStr) {
argsJSON := gjson.Parse(argsStr)
if argsJSON.IsObject() {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", argsJSON.Raw)
} else {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", "{}")
}
} else {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", "{}")
}
out, _ = sjson.SetRaw(out, "content.-1", toolUseBlock)
return true
})
}
// Set stop reason
if finishReason := choice.Get("finish_reason"); finishReason.Exists() {
out, _ = sjson.Set(out, "stop_reason", mapOpenAIFinishReasonToAnthropic(finishReason.String()))
}
}
// Set usage information
if usage := root.Get("usage"); usage.Exists() {
out, _ = sjson.Set(out, "usage.input_tokens", usage.Get("prompt_tokens").Int())
out, _ = sjson.Set(out, "usage.output_tokens", usage.Get("completion_tokens").Int())
reasoningTokens := int64(0)
if v := usage.Get("completion_tokens_details.reasoning_tokens"); v.Exists() {
reasoningTokens = v.Int()
}
out, _ = sjson.Set(out, "usage.reasoning_tokens", reasoningTokens)
}
return []string{out}
}
// mapOpenAIFinishReasonToAnthropic maps OpenAI finish reasons to Anthropic equivalents
func mapOpenAIFinishReasonToAnthropic(openAIReason string) string {
switch openAIReason {
case "stop":
return "end_turn"
case "length":
return "max_tokens"
case "tool_calls":
return "tool_use"
case "content_filter":
return "end_turn" // Anthropic doesn't have direct equivalent
case "function_call": // Legacy OpenAI
return "tool_use"
default:
return "end_turn"
}
}
func (p *ConvertOpenAIResponseToAnthropicParams) toolContentBlockIndex(openAIToolIndex int) int {
if idx, ok := p.ToolCallBlockIndexes[openAIToolIndex]; ok {
return idx
}
idx := p.NextContentBlockIndex
p.NextContentBlockIndex++
p.ToolCallBlockIndexes[openAIToolIndex] = idx
return idx
}
func collectOpenAIReasoningTexts(node gjson.Result) []string {
var texts []string
if !node.Exists() {
return texts
}
if node.IsArray() {
node.ForEach(func(_, value gjson.Result) bool {
texts = append(texts, collectOpenAIReasoningTexts(value)...)
return true
})
return texts
}
switch node.Type {
case gjson.String:
if text := node.String(); text != "" {
texts = append(texts, text)
}
case gjson.JSON:
if text := node.Get("text"); text.Exists() {
if textStr := text.String(); textStr != "" {
texts = append(texts, textStr)
}
} else if raw := node.Raw; raw != "" && !strings.HasPrefix(raw, "{") && !strings.HasPrefix(raw, "[") {
texts = append(texts, raw)
}
}
return texts
}
func stopThinkingContentBlock(param *ConvertOpenAIResponseToAnthropicParams, results *[]string) {
if !param.ThinkingContentBlockStarted {
return
}
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", param.ThinkingContentBlockIndex)
*results = append(*results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
param.ThinkingContentBlockStarted = false
param.ThinkingContentBlockIndex = -1
}
func emitMessageStopIfNeeded(param *ConvertOpenAIResponseToAnthropicParams, results *[]string) {
if param.MessageStopSent {
return
}
*results = append(*results, "event: message_stop\ndata: {\"type\":\"message_stop\"}\n\n")
param.MessageStopSent = true
}
func stopTextContentBlock(param *ConvertOpenAIResponseToAnthropicParams, results *[]string) {
if !param.TextContentBlockStarted {
return
}
contentBlockStopJSON := `{"type":"content_block_stop","index":0}`
contentBlockStopJSON, _ = sjson.Set(contentBlockStopJSON, "index", param.TextContentBlockIndex)
*results = append(*results, "event: content_block_stop\ndata: "+contentBlockStopJSON+"\n\n")
param.TextContentBlockStarted = false
param.TextContentBlockIndex = -1
}
// ConvertOpenAIResponseToClaudeNonStream converts a non-streaming OpenAI response to a non-streaming Anthropic response.
//
// Parameters:
// - ctx: The context for the request.
// - modelName: The name of the model.
// - rawJSON: The raw JSON response from the OpenAI API.
// - param: A pointer to a parameter object for the conversion.
//
// Returns:
// - string: An Anthropic-compatible JSON response.
func ConvertOpenAIResponseToClaudeNonStream(_ context.Context, _ string, originalRequestRawJSON, requestRawJSON, rawJSON []byte, _ *any) string {
_ = originalRequestRawJSON
_ = requestRawJSON
root := gjson.ParseBytes(rawJSON)
out := `{"id":"","type":"message","role":"assistant","model":"","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0}}`
out, _ = sjson.Set(out, "id", root.Get("id").String())
out, _ = sjson.Set(out, "model", root.Get("model").String())
hasToolCall := false
stopReasonSet := false
if choices := root.Get("choices"); choices.Exists() && choices.IsArray() && len(choices.Array()) > 0 {
choice := choices.Array()[0]
if finishReason := choice.Get("finish_reason"); finishReason.Exists() {
out, _ = sjson.Set(out, "stop_reason", mapOpenAIFinishReasonToAnthropic(finishReason.String()))
stopReasonSet = true
}
if message := choice.Get("message"); message.Exists() {
if contentResult := message.Get("content"); contentResult.Exists() {
if contentResult.IsArray() {
var textBuilder strings.Builder
var thinkingBuilder strings.Builder
flushText := func() {
if textBuilder.Len() == 0 {
return
}
block := `{"type":"text","text":""}`
block, _ = sjson.Set(block, "text", textBuilder.String())
out, _ = sjson.SetRaw(out, "content.-1", block)
textBuilder.Reset()
}
flushThinking := func() {
if thinkingBuilder.Len() == 0 {
return
}
block := `{"type":"thinking","thinking":""}`
block, _ = sjson.Set(block, "thinking", thinkingBuilder.String())
out, _ = sjson.SetRaw(out, "content.-1", block)
thinkingBuilder.Reset()
}
for _, item := range contentResult.Array() {
switch item.Get("type").String() {
case "text":
flushThinking()
textBuilder.WriteString(item.Get("text").String())
case "tool_calls":
flushThinking()
flushText()
toolCalls := item.Get("tool_calls")
if toolCalls.IsArray() {
toolCalls.ForEach(func(_, tc gjson.Result) bool {
hasToolCall = true
toolUse := `{"type":"tool_use","id":"","name":"","input":{}}`
toolUse, _ = sjson.Set(toolUse, "id", tc.Get("id").String())
toolUse, _ = sjson.Set(toolUse, "name", tc.Get("function.name").String())
argsStr := util.FixJSON(tc.Get("function.arguments").String())
if argsStr != "" && gjson.Valid(argsStr) {
argsJSON := gjson.Parse(argsStr)
if argsJSON.IsObject() {
toolUse, _ = sjson.SetRaw(toolUse, "input", argsJSON.Raw)
} else {
toolUse, _ = sjson.SetRaw(toolUse, "input", "{}")
}
} else {
toolUse, _ = sjson.SetRaw(toolUse, "input", "{}")
}
out, _ = sjson.SetRaw(out, "content.-1", toolUse)
return true
})
}
case "reasoning":
flushText()
if thinking := item.Get("text"); thinking.Exists() {
thinkingBuilder.WriteString(thinking.String())
}
default:
flushThinking()
flushText()
}
}
flushThinking()
flushText()
} else if contentResult.Type == gjson.String {
textContent := contentResult.String()
if textContent != "" {
block := `{"type":"text","text":""}`
block, _ = sjson.Set(block, "text", textContent)
out, _ = sjson.SetRaw(out, "content.-1", block)
}
}
}
if reasoning := message.Get("reasoning_content"); reasoning.Exists() {
for _, reasoningText := range collectOpenAIReasoningTexts(reasoning) {
if reasoningText == "" {
continue
}
block := `{"type":"thinking","thinking":""}`
block, _ = sjson.Set(block, "thinking", reasoningText)
out, _ = sjson.SetRaw(out, "content.-1", block)
}
}
if toolCalls := message.Get("tool_calls"); toolCalls.Exists() && toolCalls.IsArray() {
toolCalls.ForEach(func(_, toolCall gjson.Result) bool {
hasToolCall = true
toolUseBlock := `{"type":"tool_use","id":"","name":"","input":{}}`
toolUseBlock, _ = sjson.Set(toolUseBlock, "id", toolCall.Get("id").String())
toolUseBlock, _ = sjson.Set(toolUseBlock, "name", toolCall.Get("function.name").String())
argsStr := util.FixJSON(toolCall.Get("function.arguments").String())
if argsStr != "" && gjson.Valid(argsStr) {
argsJSON := gjson.Parse(argsStr)
if argsJSON.IsObject() {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", argsJSON.Raw)
} else {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", "{}")
}
} else {
toolUseBlock, _ = sjson.SetRaw(toolUseBlock, "input", "{}")
}
out, _ = sjson.SetRaw(out, "content.-1", toolUseBlock)
return true
})
}
}
}
if respUsage := root.Get("usage"); respUsage.Exists() {
out, _ = sjson.Set(out, "usage.input_tokens", respUsage.Get("prompt_tokens").Int())
out, _ = sjson.Set(out, "usage.output_tokens", respUsage.Get("completion_tokens").Int())
}
if !stopReasonSet {
if hasToolCall {
out, _ = sjson.Set(out, "stop_reason", "tool_use")
} else {
out, _ = sjson.Set(out, "stop_reason", "end_turn")
}
}
return out
}
func ClaudeTokenCount(ctx context.Context, count int64) string {
return fmt.Sprintf(`{"input_tokens":%d}`, count)
}