john-okeefe
dc820dfb92
- Remove API_TESTING_SUMMARY.md, IMPLEMENTATION_SUMMARY.md - Remove MIGRATION_PROGRESS.md, SECURITY_*.md files - Clean up temporary documentation files from previous sessions - Repository now focused on current working code
17 lines
361 B
Go
17 lines
361 B
Go
package utils
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import (
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"regexp"
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)
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// NormalizeISBN removes hyphens and spaces from ISBN to standardize format
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// Handles ISBN-10 and ISBN-13 formats
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func NormalizeISBN(isbn string) string {
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if isbn == "" {
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return ""
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}
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// Remove hyphens and spaces, return only digits and X (for ISBN-10)
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return regexp.MustCompile(`[-\s]`).ReplaceAllString(isbn, "")
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}
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