49 lines
1018 B
Go
49 lines
1018 B
Go
package utils
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"os"
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)
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func LoadUrls(filename string) ([]string, error) {
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file, err := os.OpenFile(filename, os.O_RDONLY, 0644)
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return []string{}, nil
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}
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return nil, fmt.Errorf("failed to open file, %w", err)
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}
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b, err := io.ReadAll(file)
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if err != nil {
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return nil, fmt.Errorf("failed to read file, %w", err)
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}
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var res []string
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if err := json.Unmarshal(b, &res); err != nil {
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return nil, fmt.Errorf("failed to unmarshal from json, %w", err)
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}
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return res, nil
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}
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func SaveUrls(filename string, urls []string) error {
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file, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
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if err != nil {
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return fmt.Errorf("failed to open file, %w", err)
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}
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b, err := json.Marshal(urls)
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if err != nil {
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return fmt.Errorf("failed to marshal to json, %w", err)
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}
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if _, err := file.Write(b); err != nil {
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return fmt.Errorf("failed to write to file, %w", err)
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}
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return nil
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}
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