usr/src/common/ficl/main.c

   1 /*
   2  * stub main for testing Ficl
   3  * $Id: main.c,v 1.2 2010/09/10 09:01:28 asau Exp $
   4  */
   5 /*
   6  * Copyright (c) 1997-2001 John Sadler (john_sadler@alum.mit.edu)
   7  * All rights reserved.
   8  *
   9  * Get the latest Ficl release at http://ficl.sourceforge.net
  10  *
  11  * I am interested in hearing from anyone who uses Ficl. If you have
  12  * a problem, a success story, a defect, an enhancement request, or
  13  * if you would like to contribute to the Ficl release, please
  14  * contact me by email at the address above.
  15  *
  16  * L I C E N S E  and  D I S C L A I M E R
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  */
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <termios.h>
  44 #include <sys/errno.h>
  45
  46 #include <ficl.h>
  47 #include <ficlplatform/emu.h>
  48 #include <libtecla.h>
  49
  50 #define LINELEN 1024
  51 #define HISTORY 2048
  52
  53 static char *
  54 prompt(void)
  55 {
  56         static char prompt[20]; /* probably too large, but well... */
  57         char *pr, *p, *cp, *ev;
  58         int n = 0;
  59
  60         if ((cp = getenv("prompt")) == NULL)
  61                 cp = ">";
  62         pr = p = strdup(cp);
  63
  64         while (*p != 0) {
  65                 if ((*p == '$') && (*(p+1) == '{')) {
  66                         for (cp = p + 2; (*cp != 0) && (*cp != '}'); cp++)
  67                                 ;
  68                         *cp = 0;
  69                         ev = getenv(p + 2);
  70
  71                         if (ev != NULL)
  72                                 n = sprintf(prompt+n, "%s", ev);
  73                         p = cp + 1;
  74                         continue;
  75                 }
  76                 prompt[n++] = *p;
  77                 p++;
  78         }
  79         if (prompt[n - 1] != ' ')
  80                 prompt[n++] = ' ';
  81         prompt[n] = '\0';
  82         free(pr);
  83         return (prompt);
  84 }
  85
  86 int
  87 main(int argc, char **argv)
  88 {
  89         int returnValue = 0;
  90         char *buffer;
  91         GetLine *gl;
  92         ficlVm *vm;
  93         struct winsize ws;
  94         int cols = 80, rows = 24;
  95
  96         if (ioctl(1, TIOCGWINSZ, &ws) != -1) {
  97                 if (ws.ws_col)
  98                         cols = ws.ws_col;
  99                 if (ws.ws_row)
 100                         rows = ws.ws_row;
 101         }
 102
 103         clearenv();
 104         asprintf(&buffer, "%d", cols);
 105         setenv("COLUMNS", buffer, 1);
 106         free(buffer);
 107         asprintf(&buffer, "%d", rows);
 108         setenv("LINES", buffer, 1);
 109         free(buffer);
 110
 111         if (getenv("prompt") == NULL)
 112                 setenv("prompt", "${interpret}", 1);
 113         if (getenv("interpret") == NULL)
 114                 setenv("interpret", "ok", 1);
 115
 116         if ((vm = bf_init("", NULL)) == NULL)
 117                 return (ENOMEM);
 118         returnValue = ficlVmEvaluate(vm, ".ver .( " __DATE__ " ) cr quit");
 119
 120         /*
 121          * load files specified on command-line
 122          */
 123         if (argc  > 1) {
 124                 asprintf(&buffer, ".( loading %s ) cr include %s\n cr",
 125                     argv[1], argv[1]);
 126                 returnValue = ficlVmEvaluate(vm, buffer);
 127                 free(buffer);
 128         }
 129
 130         if ((gl = new_GetLine(LINELEN, HISTORY)) == NULL) {
 131                 bf_fini();
 132                 return (ENOMEM);
 133         }
 134
 135         while (returnValue != FICL_VM_STATUS_USER_EXIT) {
 136                 if ((buffer = gl_get_line(gl, prompt(), NULL, -1)) == NULL)
 137                         break;
 138                 returnValue = bf_run(buffer);
 139         }
 140
 141         gl = del_GetLine(gl);
 142         bf_fini();
 143         return (returnValue);
 144 }