void substitute()

in org.eclipse.jgit/src/org/eclipse/jgit/internal/transport/ssh/OpenSshConfigFile.java [911:1010]
96 lines of code
27 McCabe index (conditional complexity)

		void substitute(String originalHostName, int port, String userName,
				String localUserName, File home, boolean fillDefaults) {
			int p = port > 0 ? port : positive(getValue(SshConstants.PORT));
			if (p <= 0) {
				p = SshConstants.SSH_DEFAULT_PORT;
			}
			String u = !StringUtils.isEmptyOrNull(userName) ? userName
					: getValue(SshConstants.USER);
			if (u == null || u.isEmpty()) {
				u = localUserName;
			}
			Replacer r = new Replacer(originalHostName, p, u, localUserName,
					home);
			if (options != null) {
				// HOSTNAME first
				String hostName = options.get(SshConstants.HOST_NAME);
				if (hostName == null || hostName.isEmpty()) {
					options.put(SshConstants.HOST_NAME, originalHostName);
				} else {
					hostName = r.substitute(hostName, "h", false); //$NON-NLS-1$
					options.put(SshConstants.HOST_NAME, hostName);
					r.update('h', hostName);
				}
			} else if (fillDefaults) {
				setValue(SshConstants.HOST_NAME, originalHostName);
			}
			if (multiOptions != null) {
				List<String> values = multiOptions
						.get(SshConstants.IDENTITY_FILE);
				if (values != null) {
					values = substitute(values, Replacer.DEFAULT_TOKENS, r,
							true);
					values = replaceTilde(values, home);
					multiOptions.put(SshConstants.IDENTITY_FILE, values);
				}
				values = multiOptions.get(SshConstants.CERTIFICATE_FILE);
				if (values != null) {
					values = substitute(values, Replacer.DEFAULT_TOKENS, r,
							true);
					values = replaceTilde(values, home);
					multiOptions.put(SshConstants.CERTIFICATE_FILE, values);
				}
			}
			if (listOptions != null) {
				List<String> values = listOptions
						.get(SshConstants.USER_KNOWN_HOSTS_FILE);
				if (values != null) {
					values = substitute(values, Replacer.DEFAULT_TOKENS, r,
							true);
					values = replaceTilde(values, home);
					listOptions.put(SshConstants.USER_KNOWN_HOSTS_FILE, values);
				}
			}
			if (options != null) {
				// HOSTNAME already done above
				String value = options.get(SshConstants.IDENTITY_AGENT);
				if (value != null && !SshConstants.NONE.equals(value)
						&& !SshConstants.ENV_SSH_AUTH_SOCKET.equals(value)) {
					value = r.substitute(value, Replacer.DEFAULT_TOKENS, true);
					value = toFile(value, home).getPath();
					options.put(SshConstants.IDENTITY_AGENT, value);
				}
				value = options.get(SshConstants.CONTROL_PATH);
				if (value != null) {
					value = r.substitute(value, Replacer.DEFAULT_TOKENS, true);
					value = toFile(value, home).getPath();
					options.put(SshConstants.CONTROL_PATH, value);
				}
				value = options.get(SshConstants.LOCAL_COMMAND);
				if (value != null) {
					value = r.substitute(value, "CdhLlnprTu", false); //$NON-NLS-1$
					options.put(SshConstants.LOCAL_COMMAND, value);
				}
				value = options.get(SshConstants.REMOTE_COMMAND);
				if (value != null) {
					value = r.substitute(value, Replacer.DEFAULT_TOKENS, false);
					options.put(SshConstants.REMOTE_COMMAND, value);
				}
				value = options.get(SshConstants.PROXY_COMMAND);
				if (value != null) {
					value = r.substitute(value, "hnpr", false); //$NON-NLS-1$
					options.put(SshConstants.PROXY_COMMAND, value);
				}
			}
			// Match is not implemented and would need to be done elsewhere
			// anyway.
			if (fillDefaults) {
				String s = options.get(SshConstants.USER);
				if (StringUtils.isEmptyOrNull(s)) {
					options.put(SshConstants.USER, u);
				}
				if (positive(options.get(SshConstants.PORT)) <= 0) {
					options.put(SshConstants.PORT, Integer.toString(p));
				}
				if (positive(
						options.get(SshConstants.CONNECTION_ATTEMPTS)) <= 0) {
					options.put(SshConstants.CONNECTION_ATTEMPTS, "1"); //$NON-NLS-1$
				}
			}
		}