1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/* -*-c-*- -------------- mixvm_loop.c :
* Implementation of mix vm command loop.
* ------------------------------------------------------------------
* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <stdio.h>
#include <mixlib/mix.h>
#include <mixlib/mix_config.h>
#include <mixlib/mix_vm.h>
#include <mixlib/mix_device.h>
#include <mixlib/mix_vm_dump.h>
#include "mixvm_command.h"
#ifdef HAVE_LIBHISTORY
# include <readline/history.h>
#else
# define add_history(x) ((void)0)
#endif
#ifdef HAVE_LIBREADLINE
# include <readline/readline.h>
#else /* !HAVE_LIBREADLINE */
static char *
readline (char *prompt)
{
enum {LINE_LEN = 256};
char *line = g_new (char, LINE_LEN);
printf ("%s", prompt);
return fgets (line, LINE_LEN, stdin);
}
#endif /* HAVE_LIBREADLINE */
/* A static variable for holding the line. */
static char *line_read = (char *)NULL;
static const char *PROMPT = N_("MIX > ");
static const char *CONFIG_FILE_ = "mixvm.config";
/* Read a string, and return a pointer to it. Returns NULL on EOF. */
static char *
rl_gets ()
{
/* If the buffer has already been allocated, return the memory
to the free pool. */
if (line_read)
{
g_free (line_read);
line_read = (char *)NULL;
}
/* Get a line from the user. */
line_read = readline ((char *)PROMPT);
/* If the line has any text in it, save it on the history. */
if (line_read && *line_read)
add_history (line_read);
return (line_read);
}
/* The main command loop of the virtual machine */
static mix_config_t *config_ = NULL;
static void
init_mixvm_ (const gchar *file, gboolean use_emacs)
{
static const gchar *HISTORY_FILE = "mixvm.history";
static gint HISTORY_SIZE = 100;
config_ = mix_config_new (NULL, CONFIG_FILE_);
mix_config_set_autosave (config_, TRUE);
if (!mix_config_get_history_file (config_))
mix_config_set_history_file (config_, HISTORY_FILE);
if (mix_config_get_history_size (config_) == 0)
mix_config_set_history_size (config_, HISTORY_SIZE);
mixvm_cmd_init (config_, (char *)file, use_emacs);
}
void
mix_vmloop (const gchar *file, gboolean use_emacs)
{
init_mixvm_ (file, use_emacs);
while ( mixvm_cmd_exec (rl_gets ()) )
;
mix_config_delete (config_);
}
/* run a program and exit */
void
mix_vmrun (const gchar *code_file, gboolean dump)
{
gboolean result;
init_mixvm_ (code_file, FALSE);
result = mixvm_cmd_exec (g_strdup ("run"));
if (result && dump) mixvm_cmd_exec (g_strdup ("pall"));
mix_config_delete (config_);
}
|
