The JLine story is indeed confusing. I believe https://github.com/jline/jline2 is the current one you want ([jline "2.11"] in your project.clj deps). See the forthcoming Clojure Cookbook recipe<https://github.com/clojure-cookbook/clojure-cookbook/blob/master/local-io/console/read-unbuffered-keystroke/read-unbuffered-keystroke.asciidoc>. If that recipe (or its trivial extension to echo repeated characters) indeed does not work correctly for you, now would be an excellent time to let people know so there is a chance to correct it before it goes to print!
John On Sunday, September 22, 2013 7:30:29 AM UTC-5, juan.facorro wrote: > > According to the JLine <https://github.com/jline/jline>'s source code > (v1.0) in > UnixTerminal.java<https://github.com/jline/jline/blob/jline-1.0/src/main/java/jline/UnixTerminal.java#L355>, > > echo is disabled with the command *stty -echo* which disables all echoing > in the console (just tried it in a terminal since I wasn't familiar with > this command). > > There are two projects for JLine in github <https://github.com/jline>, JLine > and JLine2. The latter seems to be actively mantained, but after digging a > little I found the same command is used when disabling echo in Unix > terminals, see > here<https://github.com/jline/jline2/blob/master/src/main/java/jline/UnixTerminal.java#L89>and > > here<https://github.com/jline/jline2/blob/master/src/main/java/jline/internal/TerminalLineSettings.java#L76> > . > > I don't know of a way you could go around that, but maybe someone can help > or suggest an alternative. > > HTH, > > J > > On Saturday, September 21, 2013 12:49:29 AM UTC+8, Simon Brooke wrote: >> >> I've discovered some interesting behaviour - not necessarily a bug, and >> (if it is a bug) not necessarily a bug in Clojure. >> >> Essentially, to emulate a 1970s user interface, I want to read single key >> strokes from the console. I've found two recipes online, both using the >> JLine java package: >> >> >> http://stackoverflow.com/questions/13435541/reading-unbuffered-keyboard-input-in-clojure >> >> http://stackoverflow.com/questions/3225025/single-character-console-input-in-java-clojure >> >> One of these recipes uses Terminal.getTerminal(), the other uses new >> ConsoleReader(). What happens in my context (Debian on 64 bit Intel) is >> that as soon as an instance of either class is instantiated, echoing to the >> console ceases. If you do (obviously, with the jline jar on the classpath): >> >> (import 'jline.Terminal) >> (def term (Terminal/getTerminal)) >> (.initializeTerminal term) >> (.enableEcho term) >> >> >> (or the equivalent things with a ConsoleReader), every keystroke is >> echoed twice. But if you do >> >> user=> ((..ddiissaabblleeEEcchhoo tteerrmm)) >> ^Jnil >> >> one single further character gets echoed and then nothing more, unless >> you type (blindly) (.enableEcho term), when the double-echoing behaviour >> resumes. This is consistent - on my Debian box - with Clojure 1.2, Clojure >> 1.3, and Clojure 1.5.1, all using jline 1.0. I haven't yet compiled up a >> little Java app to find out what happens without Clojure, and I haven't >> tried compiling a little command-line Clojure app, because I want to be >> able to read single characters in the context of the REPL, so if, as I >> hypothesise, jline is fighting with the REPL, proving whether it works >> outwith the context of the REPL doesn't really help me. >> >> Has anyone else seen this behaviour? Is there any solution? >> >> -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
