crypto/dist/heimdal/lib/editline/edit_compat.c

   1 /*
   2  * Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   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  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <config.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <histedit.h>
  38
  39 #include "edit_compat.h"
  40
  41 __RCSID("$Heimdal: edit_compat.c 10586 2001-08-29 00:24:33Z assar $"
  42         "$NetBSD$");
  43
  44 void
  45 rl_reset_terminal(char *p)
  46 {
  47 }
  48
  49 void
  50 rl_initialize(void)
  51 {
  52 }
  53
  54 static const char *pr;
  55 static const char* ret_prompt(EditLine *e)
  56 {
  57     return pr;
  58 }
  59
  60 static History *h;
  61
  62 #ifdef H_SETSIZE
  63 #define EL_INIT_FOUR 1
  64 #else
  65 #ifdef H_SETMAXSIZE
  66 /* backwards compatibility */
  67 #define H_SETSIZE H_SETMAXSIZE
  68 #endif
  69 #endif
  70
  71 char *
  72 readline(const char* prompt)
  73 {
  74     static EditLine *e;
  75 #ifdef H_SETSIZE
  76     HistEvent ev;
  77 #endif
  78     int count;
  79     const char *str;
  80
  81     if(e == NULL){
  82 #ifdef EL_INIT_FOUR
  83         e = el_init("", stdin, stdout, stderr);
  84 #else
  85         e = el_init("", stdin, stdout);
  86 #endif
  87         el_set(e, EL_PROMPT, ret_prompt);
  88         h = history_init();
  89 #ifdef H_SETSIZE
  90         history(h, &ev, H_SETSIZE, 25);
  91 #else
  92         history(h, H_EVENT, 25);
  93 #endif
  94         el_set(e, EL_HIST, history, h);
  95         el_set(e, EL_EDITOR, "emacs"); /* XXX? */
  96     }
  97     pr = prompt ? prompt : "";
  98     str = el_gets(e, &count);
  99     if (str && count > 0) {
 100         char *ret = strdup (str);
 101
 102         if (ret == NULL)
 103             return NULL;
 104
 105         if (ret[strlen(ret) - 1] == '\n')
 106             ret[strlen(ret) - 1] = '\0';
 107         return ret;
 108     }
 109     return NULL;
 110 }
 111
 112 void
 113 add_history(char *p)
 114 {
 115 #ifdef H_SETSIZE
 116     HistEvent ev;
 117     history(h, &ev, H_ENTER, p);
 118 #else
 119     history(h, H_ENTER, p);
 120 #endif
 121 }