cmd.go 22.6 KB
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package cmd

import (
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	"bufio"
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	"context"
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	"crypto/ed25519"
	"crypto/rand"
	"encoding/pem"
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	"errors"
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	"fmt"
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	"io"
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	"log"
	"net"
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	"net/http"
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	"os"
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	"os/exec"
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	"os/signal"
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	"path/filepath"
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	"runtime"
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	"strings"
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	"syscall"
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	"time"
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	"github.com/dustin/go-humanize"
	"github.com/olekukonko/tablewriter"
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	"github.com/spf13/cobra"
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	"golang.org/x/crypto/ssh"
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	"golang.org/x/term"
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	"github.com/jmorganca/ollama/api"
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	"github.com/jmorganca/ollama/format"
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	"github.com/jmorganca/ollama/progressbar"
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	"github.com/jmorganca/ollama/readline"
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	"github.com/jmorganca/ollama/server"
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	"github.com/jmorganca/ollama/version"
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)

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func CreateHandler(cmd *cobra.Command, args []string) error {
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	filename, _ := cmd.Flags().GetString("file")
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	filename, err := filepath.Abs(filename)
	if err != nil {
		return err
	}

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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	var spinner *Spinner

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	var currentDigest string
	var bar *progressbar.ProgressBar
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	request := api.CreateRequest{Name: args[0], Path: filename}
	fn := func(resp api.ProgressResponse) error {
		if resp.Digest != currentDigest && resp.Digest != "" {
			if spinner != nil {
				spinner.Stop()
			}
			currentDigest = resp.Digest
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			// pulling
			bar = progressbar.DefaultBytes(
				resp.Total,
				resp.Status,
			)
			bar.Set64(resp.Completed)
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		} else if resp.Digest == currentDigest && resp.Digest != "" {
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			bar.Set64(resp.Completed)
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		} else {
			currentDigest = ""
			if spinner != nil {
				spinner.Stop()
			}
			spinner = NewSpinner(resp.Status)
			go spinner.Spin(100 * time.Millisecond)
		}
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		return nil
	}

	if err := client.Create(context.Background(), &request, fn); err != nil {
		return err
	}

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	if spinner != nil {
		spinner.Stop()
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		if spinner.description != "success" {
			return errors.New("unexpected end to create model")
		}
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	}

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	return nil
}

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func RunHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}

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	name := args[0]
	// check if the model exists on the server
	_, err = client.Show(context.Background(), &api.ShowRequest{Name: name})
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	var statusError api.StatusError
	switch {
	case errors.As(err, &statusError) && statusError.StatusCode == http.StatusNotFound:
		if err := PullHandler(cmd, args); err != nil {
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			return err
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		}
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	case err != nil:
		return err
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	}

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	return RunGenerate(cmd, args)
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}

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func PushHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	insecure, err := cmd.Flags().GetBool("insecure")
	if err != nil {
		return err
	}

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	var currentDigest string
	var bar *progressbar.ProgressBar

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	request := api.PushRequest{Name: args[0], Insecure: insecure}
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	fn := func(resp api.ProgressResponse) error {
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		if resp.Digest != currentDigest && resp.Digest != "" {
			currentDigest = resp.Digest
			bar = progressbar.DefaultBytes(
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				resp.Total,
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				fmt.Sprintf("pushing %s...", resp.Digest[7:19]),
			)

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			bar.Set64(resp.Completed)
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		} else if resp.Digest == currentDigest && resp.Digest != "" {
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			bar.Set64(resp.Completed)
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		} else {
			currentDigest = ""
			fmt.Println(resp.Status)
		}
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		return nil
	}

	if err := client.Push(context.Background(), &request, fn); err != nil {
		return err
	}
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	if bar != nil && !bar.IsFinished() {
		return errors.New("unexpected end to push model")
	}

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	return nil
}

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func ListHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	models, err := client.List(context.Background())
	if err != nil {
		return err
	}

	var data [][]string

	for _, m := range models.Models {
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		if len(args) == 0 || strings.HasPrefix(m.Name, args[0]) {
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			data = append(data, []string{m.Name, m.Digest[:12], humanize.Bytes(uint64(m.Size)), format.HumanTime(m.ModifiedAt, "Never")})
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		}
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	}

	table := tablewriter.NewWriter(os.Stdout)
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	table.SetHeader([]string{"NAME", "ID", "SIZE", "MODIFIED"})
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	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
	table.SetAlignment(tablewriter.ALIGN_LEFT)
	table.SetHeaderLine(false)
	table.SetBorder(false)
	table.SetNoWhiteSpace(true)
	table.SetTablePadding("\t")
	table.AppendBulk(data)
	table.Render()

	return nil
}

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func DeleteHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	for _, name := range args {
		req := api.DeleteRequest{Name: name}
		if err := client.Delete(context.Background(), &req); err != nil {
			return err
		}
		fmt.Printf("deleted '%s'\n", name)
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	}
	return nil
}

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func ShowHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}

	if len(args) != 1 {
		return errors.New("missing model name")
	}

	license, errLicense := cmd.Flags().GetBool("license")
	modelfile, errModelfile := cmd.Flags().GetBool("modelfile")
	parameters, errParams := cmd.Flags().GetBool("parameters")
	system, errSystem := cmd.Flags().GetBool("system")
	template, errTemplate := cmd.Flags().GetBool("template")

	for _, boolErr := range []error{errLicense, errModelfile, errParams, errSystem, errTemplate} {
		if boolErr != nil {
			return errors.New("error retrieving flags")
		}
	}

	flagsSet := 0
	showType := ""

	if license {
		flagsSet++
		showType = "license"
	}

	if modelfile {
		flagsSet++
		showType = "modelfile"
	}

	if parameters {
		flagsSet++
		showType = "parameters"
	}

	if system {
		flagsSet++
		showType = "system"
	}

	if template {
		flagsSet++
		showType = "template"
	}

	if flagsSet > 1 {
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		return errors.New("only one of '--license', '--modelfile', '--parameters', '--system', or '--template' can be specified")
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	} else if flagsSet == 0 {
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		return errors.New("one of '--license', '--modelfile', '--parameters', '--system', or '--template' must be specified")
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	}

	req := api.ShowRequest{Name: args[0]}
	resp, err := client.Show(context.Background(), &req)
	if err != nil {
		return err
	}

	switch showType {
	case "license":
		fmt.Println(resp.License)
	case "modelfile":
		fmt.Println(resp.Modelfile)
	case "parameters":
		fmt.Println(resp.Parameters)
	case "system":
		fmt.Println(resp.System)
	case "template":
		fmt.Println(resp.Template)
	}

	return nil
}

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func CopyHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	req := api.CopyRequest{Source: args[0], Destination: args[1]}
	if err := client.Copy(context.Background(), &req); err != nil {
		return err
	}
	fmt.Printf("copied '%s' to '%s'\n", args[0], args[1])
	return nil
}

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func PullHandler(cmd *cobra.Command, args []string) error {
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	insecure, err := cmd.Flags().GetBool("insecure")
	if err != nil {
		return err
	}

	return pull(args[0], insecure)
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}

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func pull(model string, insecure bool) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	var currentDigest string
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	var bar *progressbar.ProgressBar
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	request := api.PullRequest{Name: model, Insecure: insecure}
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	fn := func(resp api.ProgressResponse) error {
		if resp.Digest != currentDigest && resp.Digest != "" {
			currentDigest = resp.Digest
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			bar = progressbar.DefaultBytes(
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				resp.Total,
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				fmt.Sprintf("pulling %s...", resp.Digest[7:19]),
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			)
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			bar.Set64(resp.Completed)
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		} else if resp.Digest == currentDigest && resp.Digest != "" {
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			bar.Set64(resp.Completed)
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		} else {
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			currentDigest = ""
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			fmt.Println(resp.Status)
		}
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		return nil
	}
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	if err := client.Pull(context.Background(), &request, fn); err != nil {
		return err
	}
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	if bar != nil && !bar.IsFinished() {
		return errors.New("unexpected end to pull model")
	}

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	return nil
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}

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func RunGenerate(cmd *cobra.Command, args []string) error {
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	if len(args) > 1 {
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		// join all args into a single prompt
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		wordWrap := false
		if term.IsTerminal(int(os.Stdout.Fd())) {
			wordWrap = true
		}

		nowrap, err := cmd.Flags().GetBool("nowordwrap")
		if err != nil {
			return err
		}
		if nowrap {
			wordWrap = false
		}

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		format, err := cmd.Flags().GetString("format")
		if err != nil {
			return err
		}

		return generate(cmd, args[0], strings.Join(args[1:], " "), wordWrap, format)
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	}

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	if readline.IsTerminal(int(os.Stdin.Fd())) {
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		return generateInteractive(cmd, args[0])
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	}

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	return generateBatch(cmd, args[0])
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}

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type generateContextKey string
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func generate(cmd *cobra.Command, model, prompt string, wordWrap bool, format string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	spinner := NewSpinner("")
	go spinner.Spin(60 * time.Millisecond)
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	var latest api.GenerateResponse
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	generateContext, ok := cmd.Context().Value(generateContextKey("context")).([]int)
	if !ok {
		generateContext = []int{}
	}
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	termWidth, _, err := term.GetSize(int(0))
	if err != nil {
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		wordWrap = false
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	}

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	cancelCtx, cancel := context.WithCancel(context.Background())
	defer cancel()

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT)
	var abort bool

	go func() {
		<-sigChan
		cancel()
		abort = true
	}()

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	var currentLineLength int
	var wordBuffer string

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	request := api.GenerateRequest{Model: model, Prompt: prompt, Context: generateContext, Format: format}
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	fn := func(response api.GenerateResponse) error {
		if !spinner.IsFinished() {
			spinner.Finish()
		}
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		latest = response
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		if wordWrap {
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			for _, ch := range response.Response {
				if currentLineLength+1 > termWidth-5 {
					// backtrack the length of the last word and clear to the end of the line
					fmt.Printf("\x1b[%dD\x1b[K\n", len(wordBuffer))
					fmt.Printf("%s%c", wordBuffer, ch)
					currentLineLength = len(wordBuffer) + 1
				} else {
					fmt.Print(string(ch))
					currentLineLength += 1

					switch ch {
					case ' ':
						wordBuffer = ""
					case '\n':
						currentLineLength = 0
					default:
						wordBuffer += string(ch)
					}
				}
			}
		} else {
			fmt.Print(response.Response)
		}

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		return nil
	}
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	if err := client.Generate(cancelCtx, &request, fn); err != nil {
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		if strings.Contains(err.Error(), "context canceled") && abort {
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			spinner.Finish()
			return nil
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		}
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		return err
	}
	if prompt != "" {
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		fmt.Println()
		fmt.Println()
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	}
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	if !latest.Done {
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		if abort {
			return nil
		}
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		return errors.New("unexpected end of response")
	}
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	verbose, err := cmd.Flags().GetBool("verbose")
	if err != nil {
		return err
	}
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	if verbose {
		latest.Summary()
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	}
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	ctx := cmd.Context()
	ctx = context.WithValue(ctx, generateContextKey("context"), latest.Context)
	cmd.SetContext(ctx)

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	return nil
}

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func generateInteractive(cmd *cobra.Command, model string) error {
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	// load the model
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	if err := generate(cmd, model, "", false, ""); err != nil {
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		return err
	}

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	usage := func() {
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		fmt.Fprintln(os.Stderr, "Available Commands:")
		fmt.Fprintln(os.Stderr, "  /set         Set session variables")
		fmt.Fprintln(os.Stderr, "  /show        Show model information")
		fmt.Fprintln(os.Stderr, "  /bye         Exit")
		fmt.Fprintln(os.Stderr, "  /?, /help    Help for a command")
		fmt.Fprintln(os.Stderr, "")
		fmt.Fprintln(os.Stderr, "Use \"\"\" to begin a multi-line message.")
		fmt.Fprintln(os.Stderr, "")
	}

	usageSet := func() {
		fmt.Fprintln(os.Stderr, "Available Commands:")
		fmt.Fprintln(os.Stderr, "  /set history      Enable history")
		fmt.Fprintln(os.Stderr, "  /set nohistory    Disable history")
		fmt.Fprintln(os.Stderr, "  /set wordwrap     Enable wordwrap")
		fmt.Fprintln(os.Stderr, "  /set nowordwrap   Disable wordwrap")
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		fmt.Fprintln(os.Stderr, "  /set format json  Enable JSON mode")
		fmt.Fprintln(os.Stderr, "  /set noformat     Disable formatting")
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		fmt.Fprintln(os.Stderr, "  /set verbose      Show LLM stats")
		fmt.Fprintln(os.Stderr, "  /set quiet        Disable LLM stats")
		fmt.Fprintln(os.Stderr, "")
	}

	usageShow := func() {
		fmt.Fprintln(os.Stderr, "Available Commands:")
		fmt.Fprintln(os.Stderr, "  /show license      Show model license")
		fmt.Fprintln(os.Stderr, "  /show modelfile    Show Modelfile for this model")
		fmt.Fprintln(os.Stderr, "  /show parameters   Show parameters for this model")
		fmt.Fprintln(os.Stderr, "  /show system       Show system prompt")
		fmt.Fprintln(os.Stderr, "  /show template     Show prompt template")
		fmt.Fprintln(os.Stderr, "")
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	}

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	prompt := readline.Prompt{
		Prompt:         ">>> ",
		AltPrompt:      "... ",
		Placeholder:    "Send a message (/? for help)",
		AltPlaceholder: `Use """ to end multi-line input`,
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	}

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	scanner, err := readline.New(prompt)
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	if err != nil {
		return err
	}

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	var format string
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	var wordWrap bool
	termType := os.Getenv("TERM")
	if termType == "xterm-256color" {
		wordWrap = true
	}

	// override wrapping if the user turned it off
	nowrap, err := cmd.Flags().GetBool("nowordwrap")
	if err != nil {
		return err
	}
	if nowrap {
		wordWrap = false
	}

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	fmt.Print(readline.StartBracketedPaste)
	defer fmt.Printf(readline.EndBracketedPaste)

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	var multiLineBuffer string

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	for {
		line, err := scanner.Readline()
		switch {
		case errors.Is(err, io.EOF):
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			fmt.Println()
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			return nil
		case errors.Is(err, readline.ErrInterrupt):
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			if line == "" {
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				fmt.Println("\nUse Ctrl-D or /bye to exit.")
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			}

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			continue
		case err != nil:
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			return err
		}

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		line = strings.TrimSpace(line)
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		switch {
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		case scanner.Prompt.UseAlt:
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			if strings.HasSuffix(line, `"""`) {
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				scanner.Prompt.UseAlt = false
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				multiLineBuffer += strings.TrimSuffix(line, `"""`)
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				line = multiLineBuffer
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				multiLineBuffer = ""
			} else {
				multiLineBuffer += line + " "
				continue
			}
		case strings.HasPrefix(line, `"""`):
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			scanner.Prompt.UseAlt = true
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			multiLineBuffer = strings.TrimPrefix(line, `"""`) + " "
			continue
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		case strings.HasPrefix(line, "/list"):
			args := strings.Fields(line)
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			if err := ListHandler(cmd, args[1:]); err != nil {
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				return err
			}
		case strings.HasPrefix(line, "/set"):
			args := strings.Fields(line)
			if len(args) > 1 {
				switch args[1] {
				case "history":
					scanner.HistoryEnable()
				case "nohistory":
					scanner.HistoryDisable()
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				case "wordwrap":
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					wordWrap = true
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					fmt.Println("Set 'wordwrap' mode.")
				case "nowordwrap":
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					wordWrap = false
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					fmt.Println("Set 'nowordwrap' mode.")
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				case "verbose":
					cmd.Flags().Set("verbose", "true")
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					fmt.Println("Set 'verbose' mode.")
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				case "quiet":
					cmd.Flags().Set("verbose", "false")
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					fmt.Println("Set 'quiet' mode.")
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				case "format":
					if len(args) < 3 || args[2] != "json" {
						fmt.Println("Invalid or missing format. For 'json' mode use '/set format json'")
					} else {
						format = args[2]
						fmt.Printf("Set format to '%s' mode.\n", args[2])
					}
				case "noformat":
					format = ""
					fmt.Println("Disabled format.")
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				default:
					fmt.Printf("Unknown command '/set %s'. Type /? for help\n", args[1])
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				}
			} else {
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				usageSet()
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			}
		case strings.HasPrefix(line, "/show"):
			args := strings.Fields(line)
			if len(args) > 1 {
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				client, err := api.ClientFromEnvironment()
				if err != nil {
					fmt.Println("error: couldn't connect to ollama server")
					return err
				}
				resp, err := client.Show(cmd.Context(), &api.ShowRequest{Name: model})
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				if err != nil {
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					fmt.Println("error: couldn't get model")
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					return err
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				}
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				switch args[1] {
				case "license":
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					if resp.License == "" {
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						fmt.Print("No license was specified for this model.\n\n")
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					} else {
						fmt.Println(resp.License)
					}
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				case "modelfile":
					fmt.Println(resp.Modelfile)
				case "parameters":
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					if resp.Parameters == "" {
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						fmt.Print("No parameters were specified for this model.\n\n")
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					} else {
						fmt.Println(resp.Parameters)
					}
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				case "system":
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					if resp.System == "" {
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						fmt.Print("No system prompt was specified for this model.\n\n")
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					} else {
						fmt.Println(resp.System)
					}
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				case "template":
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					if resp.Template == "" {
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						fmt.Print("No prompt template was specified for this model.\n\n")
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					} else {
						fmt.Println(resp.Template)
					}
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				default:
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					fmt.Printf("Unknown command '/show %s'. Type /? for help\n", args[1])
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				}
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			} else {
				usageShow()
			}
		case strings.HasPrefix(line, "/help"), strings.HasPrefix(line, "/?"):
			args := strings.Fields(line)
			if len(args) > 1 {
				switch args[1] {
				case "set", "/set":
					usageSet()
				case "show", "/show":
					usageShow()
				}
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			} else {
				usage()
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			}
		case line == "/exit", line == "/bye":
			return nil
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		case strings.HasPrefix(line, "/"):
			args := strings.Fields(line)
			fmt.Printf("Unknown command '%s'. Type /? for help\n", args[0])
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		}

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		if len(line) > 0 && line[0] != '/' {
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			if err := generate(cmd, model, line, wordWrap, format); err != nil {
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				return err
			}
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		}
	}
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}

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func generateBatch(cmd *cobra.Command, model string) error {
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	scanner := bufio.NewScanner(os.Stdin)
	for scanner.Scan() {
		prompt := scanner.Text()
		fmt.Printf(">>> %s\n", prompt)
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		if err := generate(cmd, model, prompt, false, ""); err != nil {
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			return err
		}
	}

	return nil
}

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func RunServer(cmd *cobra.Command, _ []string) error {
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	host, port, err := net.SplitHostPort(os.Getenv("OLLAMA_HOST"))
	if err != nil {
		host, port = "127.0.0.1", "11434"
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		if ip := net.ParseIP(strings.Trim(os.Getenv("OLLAMA_HOST"), "[]")); ip != nil {
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			host = ip.String()
		}
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	}
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	if err := initializeKeypair(); err != nil {
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		return err
	}

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	ln, err := net.Listen("tcp", net.JoinHostPort(host, port))
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	if err != nil {
		return err
	}
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	var origins []string
	if o := os.Getenv("OLLAMA_ORIGINS"); o != "" {
		origins = strings.Split(o, ",")
	}

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	return server.Serve(ln, origins)
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}

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func initializeKeypair() error {
	home, err := os.UserHomeDir()
	if err != nil {
		return err
	}

	privKeyPath := filepath.Join(home, ".ollama", "id_ed25519")
	pubKeyPath := filepath.Join(home, ".ollama", "id_ed25519.pub")

	_, err = os.Stat(privKeyPath)
	if os.IsNotExist(err) {
		fmt.Printf("Couldn't find '%s'. Generating new private key.\n", privKeyPath)
		_, privKey, err := ed25519.GenerateKey(rand.Reader)
		if err != nil {
			return err
		}

		privKeyBytes, err := format.OpenSSHPrivateKey(privKey, "")
		if err != nil {
			return err
		}

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		err = os.MkdirAll(filepath.Dir(privKeyPath), 0o755)
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		if err != nil {
			return fmt.Errorf("could not create directory %w", err)
		}

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		err = os.WriteFile(privKeyPath, pem.EncodeToMemory(privKeyBytes), 0o600)
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		if err != nil {
			return err
		}

		sshPrivateKey, err := ssh.NewSignerFromKey(privKey)
		if err != nil {
			return err
		}

		pubKeyData := ssh.MarshalAuthorizedKey(sshPrivateKey.PublicKey())

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		err = os.WriteFile(pubKeyPath, pubKeyData, 0o644)
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		if err != nil {
			return err
		}

		fmt.Printf("Your new public key is: \n\n%s\n", string(pubKeyData))
	}
	return nil
}

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func startMacApp(client *api.Client) error {
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	exe, err := os.Executable()
	if err != nil {
		return err
	}
	link, err := os.Readlink(exe)
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	if err != nil {
		return err
	}
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	if !strings.Contains(link, "Ollama.app") {
		return fmt.Errorf("could not find ollama app")
	}
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	path := strings.Split(link, "Ollama.app")
	if err := exec.Command("/usr/bin/open", "-a", path[0]+"Ollama.app").Run(); err != nil {
		return err
	}
	// wait for the server to start
	timeout := time.After(5 * time.Second)
	tick := time.Tick(500 * time.Millisecond)
	for {
		select {
		case <-timeout:
			return errors.New("timed out waiting for server to start")
		case <-tick:
			if err := client.Heartbeat(context.Background()); err == nil {
				return nil // server has started
			}
		}
	}
}

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func checkServerHeartbeat(_ *cobra.Command, _ []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	if err := client.Heartbeat(context.Background()); err != nil {
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		if !strings.Contains(err.Error(), "connection refused") {
			return err
		}
		if runtime.GOOS == "darwin" {
			if err := startMacApp(client); err != nil {
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				return fmt.Errorf("could not connect to ollama app, is it running?")
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			}
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		} else {
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			return fmt.Errorf("could not connect to ollama server, run 'ollama serve' to start it")
		}
	}
	return nil
}

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func NewCLI() *cobra.Command {
	log.SetFlags(log.LstdFlags | log.Lshortfile)

	rootCmd := &cobra.Command{
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		Use:           "ollama",
		Short:         "Large language model runner",
		SilenceUsage:  true,
		SilenceErrors: true,
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		CompletionOptions: cobra.CompletionOptions{
			DisableDefaultCmd: true,
		},
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		Version: version.Version,
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	}

	cobra.EnableCommandSorting = false

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	createCmd := &cobra.Command{
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		Use:     "create MODEL",
		Short:   "Create a model from a Modelfile",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    CreateHandler,
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	}

	createCmd.Flags().StringP("file", "f", "Modelfile", "Name of the Modelfile (default \"Modelfile\")")

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	showCmd := &cobra.Command{
		Use:     "show MODEL",
		Short:   "Show information for a model",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    ShowHandler,
	}

	showCmd.Flags().Bool("license", false, "Show license of a model")
	showCmd.Flags().Bool("modelfile", false, "Show Modelfile of a model")
	showCmd.Flags().Bool("parameters", false, "Show parameters of a model")
	showCmd.Flags().Bool("template", false, "Show template of a model")
	showCmd.Flags().Bool("system", false, "Show system prompt of a model")

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	runCmd := &cobra.Command{
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		Use:     "run MODEL [PROMPT]",
		Short:   "Run a model",
		Args:    cobra.MinimumNArgs(1),
		PreRunE: checkServerHeartbeat,
		RunE:    RunHandler,
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	}

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	runCmd.Flags().Bool("verbose", false, "Show timings for response")
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	runCmd.Flags().Bool("insecure", false, "Use an insecure registry")
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	runCmd.Flags().Bool("nowordwrap", false, "Don't wrap words to the next line automatically")
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	runCmd.Flags().String("format", "", "Response format (e.g. json)")
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	serveCmd := &cobra.Command{
		Use:     "serve",
		Aliases: []string{"start"},
		Short:   "Start ollama",
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		Args:    cobra.ExactArgs(0),
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		RunE:    RunServer,
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	}

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	pullCmd := &cobra.Command{
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		Use:     "pull MODEL",
		Short:   "Pull a model from a registry",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    PullHandler,
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	}

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	pullCmd.Flags().Bool("insecure", false, "Use an insecure registry")

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	pushCmd := &cobra.Command{
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		Use:     "push MODEL",
		Short:   "Push a model to a registry",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    PushHandler,
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	}

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	pushCmd.Flags().Bool("insecure", false, "Use an insecure registry")

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	listCmd := &cobra.Command{
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		Use:     "list",
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		Aliases: []string{"ls"},
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		Short:   "List models",
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		PreRunE: checkServerHeartbeat,
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		RunE:    ListHandler,
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	}

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	copyCmd := &cobra.Command{
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		Use:     "cp SOURCE TARGET",
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		Short:   "Copy a model",
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		Args:    cobra.ExactArgs(2),
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		PreRunE: checkServerHeartbeat,
		RunE:    CopyHandler,
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	}

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	deleteCmd := &cobra.Command{
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		Use:     "rm MODEL [MODEL...]",
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		Short:   "Remove a model",
		Args:    cobra.MinimumNArgs(1),
		PreRunE: checkServerHeartbeat,
		RunE:    DeleteHandler,
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	}

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	rootCmd.AddCommand(
		serveCmd,
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		createCmd,
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		showCmd,
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		runCmd,
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		pullCmd,
		pushCmd,
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		listCmd,
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		copyCmd,
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		deleteCmd,
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	)

	return rootCmd
}