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https://github.com/onyx-and-iris/exclude.git
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onyx-and-iris
a149ce347b
remove the type assertions update the tests: the tests now check output as well as file contents separately.
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package cmd
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import (
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"bufio"
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"fmt"
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"io"
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"strings"
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)
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// readWriteTruncater is the interface satisfied by *os.File that allows
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// reading, writing, seeking, and truncating — the operations needed to rewrite the exclude file.
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type readWriteTruncater interface {
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io.ReadWriteSeeker
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Truncate(size int64) error
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}
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// readExistingPatterns reads the existing patterns from the exclude file, ignoring comments and empty lines
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func readExistingPatterns(f io.Reader) ([]string, error) {
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var patterns []string
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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line := scanner.Text()
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if line != "" && !strings.HasPrefix(line, "#") {
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patterns = append(patterns, line)
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}
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}
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if err := scanner.Err(); err != nil {
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return nil, fmt.Errorf("error scanning exclude file: %v", err)
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}
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return patterns, nil
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}
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// writeDefaultExcludeContent writes the default exclude content to the writer
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func writeDefaultExcludeContent(w io.Writer) error {
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if _, err := w.Write([]byte(defaultExcludeFileContent)); err != nil {
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return fmt.Errorf("error writing default exclude file: %w", err)
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}
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return nil
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}
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