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/* -*-c-*- -------------- mix_vm_command.c :
* Implementation of the functions declared in mix_vm_command.h
* ------------------------------------------------------------------
* $Id: mix_vm_command.c,v 1.28 2002/04/10 23:39:40 jao Exp $
* ------------------------------------------------------------------
* Copyright (C) 2001, 2002 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 "xmix_vm_command.h"
#include "xmix_vm_handlers.h"
#ifdef HAVE_LIBHISTORY
# include <readline/history.h>
#endif
#ifdef HAVE_LIBREADLINE
# include <readline/readline.h>
#endif
/* hook execution */
static void
exec_hook_list_ (GSList *list, mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
{
while (list)
{
hook_ *hook = (hook_ *)list->data;
if (hook)
(hook->func)(dis, arg, hook->data);
list = list->next;
}
}
static void
exec_global_hook_list_ (GSList *list,
mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd, const gchar *arg)
{
while (list)
{
global_hook_ *hook = (global_hook_ *)list->data;
if (hook)
(hook->func)(dis, cmd, arg, hook->data);
list = list->next;
}
}
/* conversion from/to commands to strings */
const gchar *
mix_vm_command_to_string (mix_vm_command_t cmd)
{
if (cmd < MIX_CMD_INVALID) return commands_[cmd].name;
else return NULL;
}
mix_vm_command_t
mix_vm_command_from_string (const gchar *name)
{
gint cmd = 0;
while (cmd < MIX_CMD_INVALID && strcmp (name, commands_[cmd].name))
++cmd;
return cmd;
}
/* get help string about a command */
const gchar *
mix_vm_command_help (mix_vm_command_t cmd)
{
if (cmd < MIX_CMD_INVALID) return commands_[cmd].doc;
else return NULL;
}
const gchar *
mix_vm_command_usage (mix_vm_command_t cmd)
{
if (cmd < MIX_CMD_INVALID) return commands_[cmd].usage;
else return NULL;
}
/* create a new command dispatcher */
static GCompletion *
make_completions_ (void)
{
GList *cmds = NULL;
gint k;
GCompletion *completions = g_completion_new (NULL);
for (k = 0; k < MIX_CMD_INVALID; ++k)
cmds = g_list_append (cmds, (gpointer) mix_vm_command_to_string (k));
g_completion_add_items (completions, cmds);
return completions;
}
mix_vm_cmd_dispatcher_t *
mix_vm_cmd_dispatcher_new (FILE *out_fd, /* output messages file */
FILE *err_fd /* error messages file */)
{
mix_vm_cmd_dispatcher_t *result = NULL;
int k;
/* g_return_val_if_fail (out_fd && err_fd, NULL); */
result = g_new (mix_vm_cmd_dispatcher_t, 1);
result->result = TRUE;
result->out = out_fd;
result->err = err_fd;
result->log_msg = TRUE;
result->uptime = result->laptime = result->progtime = 0;
result->printtime = TRUE;
result->trace = FALSE;
result->program = NULL;
result->editor = NULL;
result->assembler = NULL;
result->eval = mix_eval_new ();
result->dump = mix_dump_context_new (out_fd,
MIX_SHORT_ZERO, MIX_SHORT_ZERO,
MIX_DUMP_ALL);
result->vm = mix_vm_new ();
result->global_pre = result->global_post = NULL;
for (k =0; k < MIX_CMD_INVALID; ++k)
result->pre_hooks[k] = result->post_hooks[k] = NULL;
result->config = NULL;
for (k = 0; k < PRNO_; ++k)
result->preds[k] = mix_predicate_new (k);
result->mem_preds = g_hash_table_new (NULL, NULL);
result->commands = g_hash_table_new (g_str_hash, g_str_equal);
result->completions = make_completions_ ();
return result;
}
mix_vm_cmd_dispatcher_t *
mix_vm_cmd_dispatcher_new_with_config (FILE *out, FILE *err,
mix_config_t *config)
{
mix_vm_cmd_dispatcher_t *result = mix_vm_cmd_dispatcher_new (out, err);
if (result != NULL && (result->config = config) != NULL)
{
gint hsize = 0;
const gchar *val = mix_config_get (result->config, TRACING_KEY_);
if (val) cmd_strace_ (result, val);
val = mix_config_get (result->config, EDITOR_KEY_);
if (val) mix_vm_cmd_dispatcher_set_editor (result, val);
val = mix_config_get (result->config, ASM_KEY_);
if (val) mix_vm_cmd_dispatcher_set_assembler (result, val);
val = mix_config_get (result->config, TIMING_KEY_);
if (val) cmd_stime_ (result, val);
val = mix_config_get_devices_dir (result->config);
if (!val || !mix_stat_dir (val, "devices"))
{
gchar *dirname = g_dirname (mix_config_get_filename (config));
cmd_sddir_ (result, dirname);
g_free (dirname);
}
else
mix_device_set_dir (val);
val = mix_config_get (result->config, LOGGING_KEY_);
if (val) cmd_slog_ (result, val);
#ifdef HAVE_LIBHISTORY
val = mix_config_get_history_file (result->config);
hsize = mix_config_get_history_size (result->config);
using_history ();
stifle_history (hsize);
if (val)
{
read_history ((char *)val);
history_set_pos (history_base + history_length - 1);
}
#endif
}
return result;
}
/* delete (does not close the fds in the constructor) */
static gboolean
del_pred_ (gpointer key, gpointer val, gpointer data)
{
if (val) mix_predicate_delete ((mix_predicate_t *)val);
return TRUE;
}
static void
del_hook_ (gpointer data, gpointer ignored)
{
if (data) g_free (data);
}
static void
del_hook_list_ (GSList *s)
{
if (s)
{
g_slist_foreach (s, del_hook_, NULL);
g_slist_free (s);
}
}
void
mix_vm_cmd_dispatcher_delete (mix_vm_cmd_dispatcher_t *dis)
{
const gchar *hfile = NULL;
gint k;
g_return_if_fail (dis != NULL);
mix_eval_delete (dis->eval);
mix_dump_context_delete (dis->dump);
mix_vm_delete (dis->vm);
if (dis->editor) g_free (dis->editor);
if (dis->editor) g_free (dis->assembler);
#ifdef HAVE_LIBHISTORY
if (dis->config && (hfile = mix_config_get_history_file
(dis->config)))
write_history ((char *)hfile);
#endif
for (k = 0; k < PRNO_; ++k) mix_predicate_delete (dis->preds[k]);
g_hash_table_foreach_remove (dis->mem_preds, del_pred_, NULL);
g_hash_table_destroy (dis->mem_preds);
g_hash_table_destroy (dis->commands);
g_completion_free (dis->completions);
for (k = 0; k < MIX_CMD_INVALID; ++k)
{
del_hook_list_ (dis->pre_hooks[k]);
del_hook_list_ (dis->post_hooks[k]);
}
del_hook_list_ (dis->global_pre);
del_hook_list_ (dis->global_post);
g_free (dis);
}
/* register new commands for a dispatcher */
void
mix_vm_cmd_dispatcher_register_new (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_info_t *cmd)
{
GList *list = NULL;
g_return_if_fail (dis != NULL);
g_return_if_fail (cmd != NULL);
g_hash_table_insert (dis->commands, (gpointer)cmd->name, (gpointer)cmd);
list = g_list_append (list, (gpointer)cmd->name);
g_completion_add_items (dis->completions, list);
}
const GList *
mix_vm_cmd_dispatcher_complete (const mix_vm_cmd_dispatcher_t *dis,
const gchar *cmd, gchar **prefix)
{
char *cp;
GList *result;
g_return_val_if_fail (dis != NULL, NULL);
g_return_val_if_fail (cmd != NULL, NULL);
cp = g_strdup (cmd);
result = g_completion_complete (dis->completions, cp, prefix);
g_free (cp);
return result;
}
/* set/get out/error streams */
FILE *
mix_vm_cmd_dispatcher_get_out_stream (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis, NULL);
return dis->out;
}
FILE *
mix_vm_cmd_dispatcher_get_err_stream (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis, NULL);
return dis->err;
}
FILE * /* old output stream */
mix_vm_cmd_dispatcher_set_out_stream (mix_vm_cmd_dispatcher_t *dis, FILE *out)
{
FILE *old = NULL;
g_return_val_if_fail (dis != NULL, old);
old = dis->out;
dis->out = out;
dis->dump->channel = out;
return old;
}
FILE * /* old error stream */
mix_vm_cmd_dispatcher_set_error_stream (mix_vm_cmd_dispatcher_t *dis,
FILE *err)
{
FILE *old = NULL;
g_return_val_if_fail (dis != NULL, old);
old = dis->err;
dis->err = err;
return old;
}
/* set editor and compiler templates */
void
mix_vm_cmd_dispatcher_set_editor (mix_vm_cmd_dispatcher_t *dis,
const gchar *edit_tplt)
{
g_return_if_fail (dis != NULL);
if (dis->editor) g_free (dis->editor);
dis->editor = (edit_tplt) ? g_strdup (edit_tplt) : NULL;
if (dis->config && dis->editor)
mix_config_update (dis->config, EDITOR_KEY_, dis->editor);
}
void
mix_vm_cmd_dispatcher_set_assembler (mix_vm_cmd_dispatcher_t *dis,
const gchar *asm_tplt)
{
g_return_if_fail (dis != NULL);
if (dis->assembler) g_free (dis->assembler);
dis->assembler = (asm_tplt) ? g_strdup (asm_tplt) : NULL;
if (dis->config && dis->assembler)
mix_config_update (dis->config, ASM_KEY_, dis->assembler);
}
const gchar *
mix_vm_cmd_dispatcher_get_editor (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, NULL);
return dis->editor;
}
const gchar *
mix_vm_cmd_dispatcher_get_assembler (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, NULL);
return dis->assembler;
}
const gchar *
mix_vm_cmd_dispatcher_get_src_file_path (const mix_vm_cmd_dispatcher_t *dis)
{
static gchar *PATH = NULL;
const mix_vm_t *vm = mix_vm_cmd_dispatcher_get_vm (dis);
const mix_src_file_t *f = mix_vm_get_src_file (vm);
if (PATH)
{
g_free (PATH);
PATH = NULL;
}
if (f)
PATH = mix_file_complete_name (mix_src_file_get_path (f), MIX_SRC_DEFEXT);
return PATH;
}
const gchar *
mix_vm_cmd_dispatcher_get_program_path (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, NULL);
return dis->program;
}
/* install hooks */
void
mix_vm_cmd_dispatcher_pre_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd,
mix_vm_cmd_hook_t hook, gpointer data)
{
hook_ *phook;
g_return_if_fail (dis != NULL);
g_return_if_fail (cmd < MIX_CMD_INVALID);
phook = g_new (hook_, 1);
phook->func = hook;
phook->data = data;
dis->pre_hooks[cmd] = g_slist_append (dis->pre_hooks[cmd], phook);
}
void
mix_vm_cmd_dispatcher_post_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd,
mix_vm_cmd_hook_t hook, gpointer data)
{
hook_ *phook;
g_return_if_fail (dis != NULL);
g_return_if_fail (cmd < MIX_CMD_INVALID);
phook = g_new (hook_, 1);
phook->func = hook;
phook->data = data;
dis->post_hooks[cmd] = g_slist_append (dis->post_hooks[cmd], phook);
}
void
mix_vm_cmd_dispatcher_global_pre_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_cmd_global_hook_t hook,
gpointer data)
{
global_hook_ *phook;
g_return_if_fail (dis != NULL);
phook = g_new (global_hook_, 1);
phook->func = hook;
phook->data = data;
dis->global_pre = g_slist_append (dis->global_pre, phook);
}
void
mix_vm_cmd_dispatcher_global_post_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_cmd_global_hook_t hook,
gpointer data)
{
global_hook_ *phook;
g_return_if_fail (dis != NULL);
phook = g_new (global_hook_, 1);
phook->func = hook;
phook->data = data;
dis->global_post = g_slist_append (dis->global_post, phook);
}
/* dispatch a command */
gboolean /* TRUE if success, FALSE otherwise */
mix_vm_cmd_dispatcher_dispatch (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd, const gchar *arg)
{
g_return_val_if_fail (dis != NULL, FALSE);
if (dis->global_pre)
exec_global_hook_list_ (dis->global_pre, dis, cmd, arg);
if (cmd < MIX_CMD_INVALID)
{
if (dis->pre_hooks[cmd])
exec_hook_list_ (dis->pre_hooks[cmd], dis, arg);
fflush (dis->out);
fflush (dis->err);
dis->result = (commands_[cmd].func)(dis, arg);
fflush (dis->out);
fflush (dis->err);
if (dis->post_hooks[cmd])
exec_hook_list_ (dis->post_hooks[cmd], dis, arg);
fflush (dis->out);
fflush (dis->err);
}
else
{
fprintf (dis->err, _("Unknown command. Try: help\n"));
}
if (dis->global_post)
exec_global_hook_list_ (dis->global_post, dis, cmd, arg);
fflush (dis->out);
fflush (dis->err);
return dis->result;
}
/* dispatch a command in text format */
gboolean
mix_vm_cmd_dispatcher_dispatch_text (mix_vm_cmd_dispatcher_t *dis,
const gchar *text)
{
gchar *cp, *arg = "";
int k = 0;
g_return_val_if_fail (dis != NULL, FALSE);
g_return_val_if_fail (text != NULL, FALSE);
cp = g_strdup (text);
while (cp[k] && !isspace (cp[k])) ++k;
if (cp[k])
{
cp[k] = '\0'; ++k;
while (cp[k] && isspace (cp[k])) ++k;
arg = cp + k;
}
(void) mix_vm_cmd_dispatcher_dispatch_split_text (dis, cp, arg);
g_free (cp);
return dis->result;
}
/* dispatch a command in text format, with command and arg split */
gboolean
mix_vm_cmd_dispatcher_dispatch_split_text (mix_vm_cmd_dispatcher_t *dis,
const gchar *command,
const gchar *arg)
{
mix_vm_command_info_t *info;
g_return_val_if_fail (dis, FALSE);
if (!command) return FALSE;
if (!arg) arg = "";
info = (mix_vm_command_info_t *)g_hash_table_lookup (dis->commands, command);
if (info)
{
if (dis->global_pre)
exec_global_hook_list_ (dis->global_pre, dis, MIX_CMD_LOCAL, arg);
fflush (dis->out);
fflush (dis->err);
dis->result = info->func (dis, arg);
fflush (dis->out);
fflush (dis->err);
if (dis->global_post)
exec_global_hook_list_ (dis->global_post, dis, MIX_CMD_LOCAL, arg);
fflush (dis->out);
fflush (dis->err);
}
else
dis->result =
mix_vm_cmd_dispatcher_dispatch (dis,
mix_vm_command_from_string (command),
arg);
return dis->result;
}
/* get the last dispatch's result */
gboolean
mix_vm_cmd_dispatcher_get_last_result (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, FALSE);
return dis->result;
}
/* get total uptime */
mix_time_t
mix_vm_cmd_dispatcher_get_uptime (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, 0);
return dis->uptime;
}
/* get program total time */
mix_time_t
mix_vm_cmd_dispatcher_get_progtime (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, 0);
return dis->progtime;
}
/* get time lapse */
mix_time_t
mix_vm_cmd_dispatcher_get_laptime (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, 0);
return dis->laptime;
}
/* toggle time printing */
void
mix_vm_cmd_dispatcher_print_time (mix_vm_cmd_dispatcher_t * dis, gboolean print)
{
g_return_if_fail (dis != NULL);
dis->printtime = print;
}
/* get the mix vm */
const mix_vm_t *
mix_vm_cmd_dispatcher_get_vm (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, NULL);
return dis->vm;
}
/* src file info */
gulong
mix_vm_cmd_dispatcher_get_src_file_lineno (const mix_vm_cmd_dispatcher_t *dis)
{
g_return_val_if_fail (dis != NULL, 0);
return mix_vm_get_break_lineno (dis->vm);
}
const gchar *
mix_vm_cmd_dispatcher_get_src_file_line (const mix_vm_cmd_dispatcher_t *dis,
gulong line, gboolean cr)
{
const mix_src_file_t *file;
g_return_val_if_fail (dis != NULL, NULL);
file = mix_vm_get_src_file (dis->vm);
if (line == 0 || file == NULL) return cr? "" : "\n";
if (cr)
return mix_src_file_get_line (file, line);
else
{
enum {BUFF_SIZE = 256};
static gchar BUFFER[BUFF_SIZE];
int len =
g_snprintf (BUFFER, BUFF_SIZE, "%s", mix_src_file_get_line (file, line));
if (len > 0 && BUFFER[len - 1] == '\n') BUFFER[len - 1] = '\0';
return BUFFER;
}
}
|