examples/v1/core

Data struct

Data represents the structure of the data saved in the JSON file.

Fields:

• Items ([]string) - json:"items"

GetDataPath function

GetDataPath returns the path of the JSON storage file.

Returns:

• string

{
	return filepath.Join(os.TempDir(), "mycli_data.json")
}

LoadData function

LoadData loads the data from the JSON file.

If the file does not exist, it returns empty data without an error.

If there is an error reading or unmarshalling the file, it returns an error.

Returns:

• Data
• error

References:

• Data (examples/v1/core)

{
	var data Data
	filePath := GetDataPath()

	file, err := os.ReadFile(filePath)
	if err != nil {
		if os.IsNotExist(err) {
			return Data{}, nil // File doesn't exist, return empty data
		}
		return Data{}, fmt.Errorf("error reading data file: %w", err)
	}

	err = json.Unmarshal(file, &data)
	if err != nil {
		return Data{}, fmt.Errorf("error unmarshalling data: %w", err)
	}

	return data, nil
}

SaveData function

SaveData saves the data to the JSON file.

If there is an error marshalling or writing the file, it returns an error.

Parameters:

• data Data

Returns:

• error

References:

• Data (examples/v1/core)

{
	filePath := GetDataPath()

	file, err := json.MarshalIndent(data, "", "  ")
	if err != nil {
		return fmt.Errorf("error marshalling data: %w", err)
	}

	err = os.WriteFile(filePath, file, 0644)
	if err != nil {
		return fmt.Errorf("error writing data file: %w", err)
	}

	return nil
}

encoding/json import

Import example:

import "encoding/json"

fmt import

Import example:

import "fmt"

os import

Import example:

import "os"

path/filepath import

Import example:

import "path/filepath"