Dave Jarvis' Repositories
git clone https://repo.autonoma.ca/repo/keenwrite.git
Use ProtocolResolver to determine if local file
| Author | DaveJarvis <email> |
|---|---|
| Date | 2020-09-12 12:44:35 GMT-0700 |
| Commit | 5ded87bd9cfd1079ef799e160abefdf2c2fc4331 |
| Parent | e7091b2 |
| Delta | 27 lines added, 6 lines removed, 21-line increase |
src/main/java/com/scrivenvar/util/ProtocolResolver.java
| */ | ||
| public class ProtocolResolver { | ||
| - public static final String SCHEME_HTTP = "http"; | ||
| + private static final String SCHEME_HTTP = "http"; | ||
| + private static final String SCHEME_FILE = "file"; | ||
| /** | ||
| * Answers {@code true} if the given protocol is either HTTP or HTTPS. | ||
| * | ||
| - * @param protocol The protocol to compare against the web protocol. | ||
| + * @param protocol The protocol to compare against the web URI scheme. | ||
| * @return {@code true} the protocol is either HTTP or HTTPS. | ||
| */ | ||
| - public static boolean isHttp( String protocol ) { | ||
| - protocol = protocol == null ? "" : protocol; | ||
| - return protocol.toLowerCase().startsWith( SCHEME_HTTP ); | ||
| + public static boolean isHttp( final String protocol ) { | ||
| + return sanitize( protocol ).startsWith( SCHEME_HTTP ); | ||
| + } | ||
| + | ||
| + /** | ||
| + * Answers {@code true} if the given protocol is for a local file. | ||
| + * | ||
| + * @param protocol The protocol to compare against the file URI scheme. | ||
| + * @return {@code true} the protocol is for a local file reference. | ||
| + */ | ||
| + public static boolean isFile( String protocol ) { | ||
| + return sanitize( protocol ).startsWith( SCHEME_FILE ); | ||
| } | ||
| /** | ||
| * Returns the protocol for a given URI or filename. | ||
| * | ||
| * @param resource Determine the protocol for this URI or filename. | ||
| - * @return The protocol for the given source. | ||
| + * @return The protocol for the given resource. | ||
| */ | ||
| public static String getProtocol( final String resource ) { | ||
 | ||
| return result; | ||
| + } | ||
| + | ||
| + /** | ||
| + * Returns an empty string if the given string to sanitize is {@code null}, | ||
| + * otherwise the given string in lowercase. | ||
| + * | ||
| + * @param s The string to sanitize, may be {@code null}. | ||
| + * @return A non-{@code null} string. | ||
| + */ | ||
| + private static String sanitize( final String s ) { | ||
| + return s == null ? "" : s.toLowerCase(); | ||
| } | ||
| } | ||