jimsh.c

   1 /*
   2  * jimsh - An interactive shell for Jim
   3  *
   4  * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
   5  * Copyright 2009 Steve Bennett <steveb@workware.net.au>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above
  14  *    copyright notice, this list of conditions and the following
  15  *    disclaimer in the documentation and/or other materials
  16  *    provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
  19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  21  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  22  * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  23  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * The views and conclusions contained in the software and documentation
  32  * are those of the authors and should not be interpreted as representing
  33  * official policies, either expressed or implied, of the Jim Tcl Project.
  34  */
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39
  40 #include "jim.h"
  41 #include "jimautoconf.h"
  42
  43 /* From initjimsh.tcl */
  44 extern int Jim_initjimshInit(Jim_Interp *interp);
  45
  46 static void JimSetArgv(Jim_Interp *interp, int argc, char *const argv[])
  47 {
  48     int n;
  49     Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0);
  50
  51     /* Populate argv global var */
  52     for (n = 0; n < argc; n++) {
  53         Jim_Obj *obj = Jim_NewStringObj(interp, argv[n], -1);
  54
  55         Jim_ListAppendElement(interp, listObj, obj);
  56     }
  57
  58     Jim_SetVariableStr(interp, "argv", listObj);
  59     Jim_SetVariableStr(interp, "argc", Jim_NewIntObj(interp, argc));
  60 }
  61
  62 static void JimPrintErrorMessage(Jim_Interp *interp)
  63 {
  64     Jim_MakeErrorMessage(interp);
  65     fprintf(stderr, "%s\n", Jim_String(Jim_GetResult(interp)));
  66 }
  67
  68 int main(int argc, char *const argv[])
  69 {
  70     int retcode;
  71     Jim_Interp *interp;
  72
  73     if (argc > 1 && strcmp(argv[1], "--version") == 0) {
  74         printf("%d.%d\n", JIM_VERSION / 100, JIM_VERSION % 100);
  75         return 0;
  76     }
  77
  78     /* Create and initialize the interpreter */
  79     interp = Jim_CreateInterp();
  80     Jim_RegisterCoreCommands(interp);
  81
  82     /* Register static extensions */
  83     if (Jim_InitStaticExtensions(interp) != JIM_OK) {
  84         JimPrintErrorMessage(interp);
  85     }
  86
  87     Jim_SetVariableStrWithStr(interp, "jim::argv0", argv[0]);
  88     Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, argc == 1 ? "1" : "0");
  89     retcode = Jim_initjimshInit(interp);
  90
  91     if (argc == 1) {
  92         if (retcode == JIM_ERR) {
  93             JimPrintErrorMessage(interp);
  94         }
  95         if (retcode != JIM_EXIT) {
  96             JimSetArgv(interp, 0, NULL);
  97             retcode = Jim_InteractivePrompt(interp);
  98         }
  99     }
 100     else {
 101         if (argc > 2 && strcmp(argv[1], "-e") == 0) {
 102             JimSetArgv(interp, argc - 3, argv + 3);
 103             retcode = Jim_Eval(interp, argv[2]);
 104             if (retcode != JIM_ERR) {
 105                 printf("%s\n", Jim_String(Jim_GetResult(interp)));
 106             }
 107         }
 108         else {
 109             Jim_SetVariableStr(interp, "argv0", Jim_NewStringObj(interp, argv[1], -1));
 110             JimSetArgv(interp, argc - 2, argv + 2);
 111             retcode = Jim_EvalFile(interp, argv[1]);
 112         }
 113         if (retcode == JIM_ERR) {
 114             JimPrintErrorMessage(interp);
 115         }
 116     }
 117     if (retcode == JIM_EXIT) {
 118         retcode = Jim_GetExitCode(interp);
 119     }
 120     else if (retcode == JIM_ERR) {
 121         retcode = 1;
 122     }
 123     else {
 124         retcode = 0;
 125     }
 126     Jim_FreeInterp(interp);
 127     return retcode;
 128 }