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author | Travis Watkins <amaranth@ubuntu.com> | 2012-05-23 14:52:05 -0500 |
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committer | Travis Watkins <amaranth@ubuntu.com> | 2012-05-23 15:32:42 -0500 |
commit | 2e744dbf64ed5a1b987508ba5f4445357d2feac6 (patch) | |
tree | 665609311693b848fc76c19bc913ee330c71b90b /src/main/java/jline | |
parent | 94e9543a14c5cc70bf42a8d28992f867d52a4b98 (diff) | |
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Add files from jline for diff visibility
Diffstat (limited to 'src/main/java/jline')
-rw-r--r-- | src/main/java/jline/AnsiWindowsTerminal.java | 90 | ||||
-rw-r--r-- | src/main/java/jline/internal/TerminalLineSettings.java | 219 |
2 files changed, 309 insertions, 0 deletions
diff --git a/src/main/java/jline/AnsiWindowsTerminal.java b/src/main/java/jline/AnsiWindowsTerminal.java new file mode 100644 index 00000000..df325597 --- /dev/null +++ b/src/main/java/jline/AnsiWindowsTerminal.java @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2009 the original author(s). + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * MODIFICATIONS: methods to deal with wrapping the output stream. + */ + +package jline; + +import org.fusesource.jansi.AnsiConsole; +import org.fusesource.jansi.AnsiOutputStream; +import org.fusesource.jansi.WindowsAnsiOutputStream; + +import java.io.ByteArrayOutputStream; +import java.io.OutputStream; + +/** + * ANSI-supported {@link WindowsTerminal}. + * + * @since 2.0 + */ +public class AnsiWindowsTerminal + extends WindowsTerminal +{ + private final boolean ansiSupported = detectAnsiSupport(); + + @Override + public OutputStream wrapOutIfNeeded(OutputStream out) { + return wrapOutputStream(out); + } + + /** + * Returns an ansi output stream handler. We return whatever was + * passed if we determine we cannot handle ansi based on Kernel32 calls. + * + * @return an @{link AltWindowAnsiOutputStream} instance or the passed + * stream. + */ + private static OutputStream wrapOutputStream(final OutputStream stream) { + String os = System.getProperty("os.name"); + if( os.startsWith("Windows") ) { + // On windows we know the console does not interpret ANSI codes.. + try { + return new WindowsAnsiOutputStream(stream); + } catch (Throwable ignore) { + // this happens when JNA is not in the path.. or + // this happens when the stdout is being redirected to a file. + } + // Use the ANSIOutputStream to strip out the ANSI escape sequences. + return new AnsiOutputStream(stream); + } + return stream; + } + + private static boolean detectAnsiSupport() { + OutputStream out = AnsiConsole.wrapOutputStream(new ByteArrayOutputStream()); + try { + out.close(); + } + catch (Exception e) { + // ignore; + } + return out instanceof WindowsAnsiOutputStream; + } + + public AnsiWindowsTerminal() throws Exception { + super(); + } + + @Override + public boolean isAnsiSupported() { + return ansiSupported; + } + + @Override + public boolean hasWeirdWrap() { + return false; + } +} diff --git a/src/main/java/jline/internal/TerminalLineSettings.java b/src/main/java/jline/internal/TerminalLineSettings.java new file mode 100644 index 00000000..d5731ca4 --- /dev/null +++ b/src/main/java/jline/internal/TerminalLineSettings.java @@ -0,0 +1,219 @@ +/* + * Copyright (c) 2002-2007, Marc Prud'hommeaux. All rights reserved. + * + * This software is distributable under the BSD license. See the terms of the + * BSD license in the documentation provided with this software. + */ + +package jline.internal; + +import java.io.ByteArrayOutputStream; +import java.io.Closeable; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.text.MessageFormat; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Provides access to terminal line settings via <tt>stty</tt>. + * + * @author <a href="mailto:mwp1@cornell.edu">Marc Prud'hommeaux</a> + * @author <a href="mailto:dwkemp@gmail.com">Dale Kemp</a> + * @author <a href="mailto:jason@planet57.com">Jason Dillon</a> + * @author <a href="mailto:jbonofre@apache.org">Jean-Baptiste Onofré</a> + * @since 2.0 + */ +public final class TerminalLineSettings +{ + public static final String JLINE_STTY = "jline.stty"; + + public static final String DEFAULT_STTY = "stty"; + + public static final String JLINE_SH = "jline.sh"; + + public static final String DEFAULT_SH = "sh"; + + private String sttyCommand; + + private String shCommand; + + private String config; + + private long configLastFetched; + + public TerminalLineSettings() throws IOException, InterruptedException { + sttyCommand = Configuration.getString(JLINE_STTY, DEFAULT_STTY); + shCommand = Configuration.getString(JLINE_SH, DEFAULT_SH); + config = get("-a"); + configLastFetched = System.currentTimeMillis(); + + Log.debug("Config: ", config); + + // sanity check + if (config.length() == 0) { + throw new IOException(MessageFormat.format("Unrecognized stty code: {0}", config)); + } + } + + public String getConfig() { + return config; + } + + public void restore() throws IOException, InterruptedException { + set("sane"); + } + + public String get(final String args) throws IOException, InterruptedException { + return stty(args); + } + + public void set(final String args) throws IOException, InterruptedException { + stty(args); + } + + /** + * <p> + * Get the value of a stty property, including the management of a cache. + * </p> + * + * @param name the stty property. + * @return the stty property value. + */ + public int getProperty(String name) { + assert name != null; + try { + // tty properties are cached so we don't have to worry too much about getting term widht/height + if (config == null || System.currentTimeMillis() - configLastFetched > 1000 ) { + config = get("-a"); + configLastFetched = System.currentTimeMillis(); + } + return this.getProperty(name, config); + } catch (Exception e) { + Log.warn("Failed to query stty ", name, e); + return -1; + } + } + + /** + * <p> + * Parses a stty output (provided by stty -a) and return the value of a given property. + * </p> + * + * @param name property name. + * @param stty string resulting of stty -a execution. + * @return value of the given property. + */ + protected static int getProperty(String name, String stty) { + // try the first kind of regex + Pattern pattern = Pattern.compile(name + "\\s+=\\s+([^;]*)[;\\n\\r]"); + Matcher matcher = pattern.matcher(stty); + if (!matcher.find()) { + // try a second kind of regex + pattern = Pattern.compile(name + "\\s+([^;]*)[;\\n\\r]"); + matcher = pattern.matcher(stty); + if (!matcher.find()) { + // try a second try of regex + pattern = Pattern.compile("(\\S*)\\s+" + name); + matcher = pattern.matcher(stty); + if (!matcher.find()) { + return -1; + } + } + } + return parseControlChar(matcher.group(1)); + } + + private static int parseControlChar(String str) { + // under + if ("<undef>".equals(str)) { + return -1; + } + // octal + if (str.charAt(0) == '0') { + return Integer.parseInt(str, 8); + } + // decimal + if (str.charAt(0) >= '1' && str.charAt(0) <= '9') { + return Integer.parseInt(str, 10); + } + // control char + if (str.charAt(0) == '^') { + if (str.charAt(1) == '?') { + return 127; + } else { + return str.charAt(1) - 64; + } + } else if (str.charAt(0) == 'M' && str.charAt(1) == '-') { + if (str.charAt(2) == '^') { + if (str.charAt(3) == '?') { + return 127 + 128; + } else { + return str.charAt(3) - 64 + 128; + } + } else { + return str.charAt(2) + 128; + } + } else { + return str.charAt(0); + } + } + + private String stty(final String args) throws IOException, InterruptedException { + assert args != null; + return exec(String.format("%s %s < /dev/tty", sttyCommand, args)); + } + + private String exec(final String cmd) throws IOException, InterruptedException { + assert cmd != null; + return exec(shCommand, "-c", cmd); + } + + private String exec(final String... cmd) throws IOException, InterruptedException { + assert cmd != null; + + ByteArrayOutputStream bout = new ByteArrayOutputStream(); + + Log.trace("Running: ", cmd); + + Process p = Runtime.getRuntime().exec(cmd); + + InputStream in = null; + InputStream err = null; + OutputStream out = null; + try { + int c; + in = p.getInputStream(); + while ((c = in.read()) != -1) { + bout.write(c); + } + err = p.getErrorStream(); + while ((c = err.read()) != -1) { + bout.write(c); + } + out = p.getOutputStream(); + p.waitFor(); + } + finally { + close(in, out, err); + } + + String result = bout.toString(); + + Log.trace("Result: ", result); + + return result; + } + + private static void close(final Closeable... closeables) { + for (Closeable c : closeables) { + try { + c.close(); + } + catch (Exception e) { + // Ignore + } + } + } +}
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