crypto/heimdal-0.6.3/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("$Id: edit_compat.c,v 1.9 2001/08/29 00:24:33 assar Exp $");
  42
  43 void
  44 rl_reset_terminal(char *p)
  45 {
  46 }
  47
  48 void
  49 rl_initialize(void)
  50 {
  51 }
  52
  53 static const char *pr;
  54 static const char* ret_prompt(EditLine *e)
  55 {
  56     return pr;
  57 }
  58
  59 static History *h;
  60
  61 #ifdef H_SETSIZE
  62 #define EL_INIT_FOUR 1
  63 #else
  64 #ifdef H_SETMAXSIZE
  65 /* backwards compatibility */
  66 #define H_SETSIZE H_SETMAXSIZE
  67 #endif
  68 #endif
  69
  70 char *
  71 readline(const char* prompt)
  72 {
  73     static EditLine *e;
  74 #ifdef H_SETSIZE
  75     HistEvent ev;
  76 #endif
  77     int count;
  78     const char *str;
  79
  80     if(e == NULL){
  81 #ifdef EL_INIT_FOUR
  82         e = el_init("", stdin, stdout, stderr);
  83 #else
  84         e = el_init("", stdin, stdout);
  85 #endif
  86         el_set(e, EL_PROMPT, ret_prompt);
  87         h = history_init();
  88 #ifdef H_SETSIZE
  89         history(h, &ev, H_SETSIZE, 25);
  90 #else
  91         history(h, H_EVENT, 25);
  92 #endif
  93         el_set(e, EL_HIST, history, h);
  94         el_set(e, EL_EDITOR, "emacs"); /* XXX? */
  95     }
  96     pr = prompt ? prompt : "";
  97     str = el_gets(e, &count);
  98     if (str && count > 0) {
  99         char *ret = strdup (str);
 100
 101         if (ret == NULL)
 102             return NULL;
 103
 104         if (ret[strlen(ret) - 1] == '\n')
 105             ret[strlen(ret) - 1] = '\0';
 106         return ret;
 107     }
 108     return NULL;
 109 }
 110
 111 void
 112 add_history(char *p)
 113 {
 114 #ifdef H_SETSIZE
 115     HistEvent ev;
 116     history(h, &ev, H_ENTER, p);
 117 #else
 118     history(h, H_ENTER, p);
 119 #endif
 120 }