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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_10_08
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1008117a
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1992-06-04
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209 lines
1: /************************************************************
* Program: RMENU Menu Interpreter
* Module: rmenu3.c
* Execute a Menu Item
* Written by: Leor Zolman, 7/91
************************************************************/
#include "cmenu.h"
#include "rcmenu.h"
#if __STDC__
#pragma hdrstop
#endif
/************************************************************
* do_item():
* Perform the action associated with a particular item.
* Default path is supplied as "path":
************************************************************/
int do_item(M2p, curr, path)
MENU2 *M2p;
int curr;
char *path;
{
ITEM *Ip = M2p -> Items[curr];
char newpath[MAX_PATH];
int i, j;
strcpy(newpath, make_path(path, Ip -> path));
switch (Ip -> acttyp)
{
case ACT_CMND:
do_cmnd(Ip, newpath);
break;
case ACT_LMENU:
if (sub_menu(Ip->lmenunum, newpath) == EXITALL)
return EXITALL;
break;
case ACT_EMENU:
if (do_emenu(Ip, newpath) == EXITALL)
return EXITALL;
break;
}
return OK;
}
/************************************************************
* show_item():
* Display the action associated with a particular item.
* Default path is supplied as "path":
************************************************************/
Void show_item(M2p, curr, path)
MENU2 *M2p;
int curr;
char *path;
{
ITEM *Ip = M2p -> Items[curr];
char newpath[MAX_PATH];
int i, j;
strcpy(newpath, make_path(path, Ip -> path));
switch (Ip -> acttyp)
{
case ACT_CMND:
show_cmnd(Ip, newpath);
break;
case ACT_LMENU:
put_msg(0, "This is a local menu. Press any key: ");
break;
case ACT_EMENU:
put_msg(0,
" Path: %s; Emenu spec: %s. Press any key to continue: ",
newpath, Ip -> action);
break;
}
/* return OK; */
}
/************************************************************
* do_cmnd():
* Run a directly executable item.
************************************************************/
Void do_cmnd(Ip, path)
ITEM *Ip;
char *path;
{
char *cmd_line;
int retval;
cmd_line = make_cmd(path, Ip -> action);
if (Ip -> pre_clear == YES ||
(Ip -> pre_clear == DEFAULT && DEF_PRECLEAR == YES))
clear();
move(0, 0);
refresh();
if (debug)
put_msg(0, "About to exec: %s", cmd_line);
pre_shell(); /* set up for shell call */
retval = system0(cmd_line); /* make the shell call */
switch (Ip -> prompt) /* decide whether to prompt */
{ /* or not after the command */
case NO: /* explicit no is clear */
break;
case DEFAULT: /* if unspecified, then... */
#if (DEF_PROMPT == NO) /* if default is NO, */
break; /* then don't prompt */
#endif
#if (DEF_PROMPT == ON_ERROR) /* if prompting on errors, */
if (!retval) /* but there wasn't any */
break; /* error, then don't prompt */
#endif
/* else fall through to YES */
case YES:
puts("\nPress RETURN to continue . . .");
(Void) getchar();
}
/* Upon return from shell, */
post_shell(); /* restore everything */
}
/************************************************************
* show_cmnd():
* Show a directly executable action string.
************************************************************/
Void show_cmnd(Ip, path)
ITEM *Ip;
char *path;
{
char *cmd_line;
int retval;
cmd_line = make_cmd(path, Ip -> action);
put_msg(0, " Action: %s. Press a key to continue: ", cmd_line);
}
/**************************************************************
* do_emenu():
* Run an external menu specification.
**************************************************************/
int do_emenu(Ip, path)
ITEM *Ip;
char *path;
{
char filename[MAX_PATH];
int retval;
if (nestlev == MAX_NEST - 1)
return fatal("Menus nested too deeply (increase MAX_NEST)");
strcpy(filename, make_path(path, Ip -> action));
nestlev++;
retval = do_menu("", filename);
nestlev--;
return retval;
}
/************************************************************
* pre_shell()
* Set tty mode for a shell call
* DOS only: save drive and path for later restoration
************************************************************/
Void pre_shell()
{
push_path();
tty_shell();
}
/************************************************************
* post_shell()
* Set tty mode for curses
* DOS only: restore drive and path from before shell call
************************************************************/
Void post_shell()
{
pop_path();
tty_curses();
}