New plugin tcl/term.

Terminal handling in Tcl.

plugins/tcl/term

@@ -0,0 +1,94 @@
+#!/bin/bash
+
+
+################################################################################
+#                                         
+# |              |    |         |         
+# |---.,---.,---.|---.|    ,---.|--- ,---.
+# |   |,---|`---.|   ||    |---'|    `---.
+# `---'`---^`---'`   '`---'`---'`---'`---'
+#
+#                                        
+# Bashlets -- A modular extensible toolbox for Bash
+#
+# Copyright (c) 2014-6 Roberto Reale
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+################################################################################
+
+#@method
+function bashlets_tcl_term_get_text()
+{
+    local f="$1"
+    local tcl_text
+
+    case "$f" in 
+        is-interactive)
+            tcl_text='
+                package require Tcl 8.4
+
+                proc is_interactive {} {
+
+                    # see http://www.tcl.tk/man/tcl8.4/TclCmd/exec.htm
+
+                    if {[catch {exec test -t 0} results]} {
+                        if {[lindex $::errorCode 0] eq "CHILDSTATUS"} {
+                            return 0
+                        } else {
+                            # some kind of unexpected failure
+                            return 0
+                        }
+                    } else {
+                        return 1
+                    }
+                }
+            '
+            ;;
+        *)
+            # TODO error!
+            ;;
+    esac
+
+    cat <<< "$tcl_text"
+}
+
+
+#@method
+function bashlets_tcl_term_is_interactive()
+{
+    local tcl_text
+
+    tcl_text="
+        $(bashlets_tcl_term_get_text is-interactive)
+
+        exit [is_interactive]
+    "
+
+    tclsh <<< "$tcl_text"
+}
+
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 4
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: ts=4 sw=4 et filetype=sh