| 1 | #!/bin/bash |
| 2 | |
| 3 | checkURL() { |
| 4 | # Desc: Checks if string is a valid URL. |
| 5 | # Warning: Does not correctly handle multi-byte characters. |
| 6 | # Version: 0.0.2 |
| 7 | # Input: arg1: string |
| 8 | # Output: return code 0: string is a valid URL |
| 9 | # return code 1: string is NOT a valid URL |
| 10 | # Depends: Bash 5.0.3 |
| 11 | # Ref/Attrib: https://stackoverflow.com/a/3184819 |
| 12 | regex='(https?|ftp|file|ssh|git)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]' |
| 13 | arg1="$1"; |
| 14 | if [[ $arg1 =~ $regex ]]; then |
| 15 | return 0; |
| 16 | else |
| 17 | return 1; |
| 18 | fi; |
| 19 | } |
| 20 | |
| 21 | #==BEGIN sample code |
| 22 | testString="https://google.com/security.main.html" |
| 23 | if checkURL "$testString"; then echo "Is a valid URL:$testString"; else echo "Is NOT a valid URL:$testString"; fi; |
| 24 | testString="ssh://username@host.xz/absolute/path/to/repo.git/" |
| 25 | if checkURL "$testString"; then echo "Is a valid URL:$testString"; else echo "Is NOT a valid URL:$testString"; fi; |
| 26 | #==END sample code |