jim-readline.c

   1 /*
   2  * Jim - Readline bindings for Jim
   3  *
   4  * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above
  13  *    copyright notice, this list of conditions and the following
  14  *    disclaimer in the documentation and/or other materials
  15  *    provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  28  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and documentation
  31  * are those of the authors and should not be interpreted as representing
  32  * official policies, either expressed or implied, of the Jim Tcl Project.
  33  */
  34
  35 #include <jim.h>
  36
  37 #include <readline/readline.h>
  38 #include <readline/history.h>
  39
  40 static int JimRlReadlineCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
  41 {
  42     char *line;
  43
  44     if (argc != 2) {
  45         Jim_WrongNumArgs(interp, 1, argv, "prompt");
  46         return JIM_ERR;
  47     }
  48     line = readline(Jim_String(argv[1]));
  49     if (!line) {
  50         return JIM_EXIT;
  51     }
  52     Jim_SetResult(interp, Jim_NewStringObj(interp, line, -1));
  53     return JIM_OK;
  54 }
  55
  56 static int JimRlAddHistoryCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
  57 {
  58     if (argc != 2) {
  59         Jim_WrongNumArgs(interp, 1, argv, "string");
  60         return JIM_ERR;
  61     }
  62     add_history(Jim_String(argv[1]));
  63     return JIM_OK;
  64 }
  65
  66 int Jim_readlineInit(Jim_Interp *interp)
  67 {
  68     if (Jim_PackageProvide(interp, "readline", "1.0", JIM_ERRMSG))
  69         return JIM_ERR;
  70
  71     Jim_CreateCommand(interp, "readline.readline", JimRlReadlineCommand, NULL, NULL);
  72     Jim_CreateCommand(interp, "readline.addhistory", JimRlAddHistoryCommand, NULL, NULL);
  73     return JIM_OK;
  74 }