# include "c.defs"

/**********************************************************************

	INIT PROGRAM

	Reports time of last login.  Reads, Saves, and Prints Mail.
	Reports on existence of old mail.  Mail is saved in VANISH
	as it is being read.

	Command options:

	The following options control various actions.  They may be
	written as +c (meaning always do it) or -c (never do it).
	The default is indicated: ASK means that the user is asked
	whether or not to perform the action.

	+l		record login time (default: +)
	+s		save mail (default: ask)
	+p		print mail (default: ask)
	+r		read mail (default: ask)
	+t		check for TECO save files (default: -)
	+u		print user name (default: +)

	The following options specify various names to be used
	in performing actions:

	s=foo		specify fname1 for saved mail (default: OMAIL)
	"p=foo bar"	specify file for printing (default: TPL:)
	"t=foo bar"	specify TECO save file name (default: .SAVE. >)

**********************************************************************/

# define process_options propt
# define mail_exists mlexst
# define get_user_name gtuser
# define print_user_name pruser
# define print_last_login prlog
# define check_for_old_mail chkom
# define check_for_teco_fies chktf
# define type_files typfil
# define copy_files cpfil
# define print_files prtfil
# define delete_files delfil
# define close_files clofil
# define file_type filty
# define file_print filpr
# define file_copy filcp
# define save_name svnam
# define print_name prnam
# define teco_name tecnam

extern int cout;			/* standard output */
int fin0, fin1, fin2;			/* mail files */
char fnam0[40], fnam1[40], fnam2[40];	/* mail file names */
char user[10];				/* user name */
int s_hit;				/* interrupt flag */

/*	options		*/

int	lflag '+',
	sflag 'a',
	pflag 'a',
	rflag 'a',
	tflag '-',
	uflag '+';
char	*save_name {"omail"};
char	*print_name {"tpl:"};
char	*teco_name {".save. >"};

main (argc, argv) int argc; char *argv[];

	{int saved, backed_up, able_to_print, want_to_save;
	char *sconcat();

	if (argc>1) process_options (argc-1,argv+1);
	get_user_name ();
	if (uflag=='+') print_user_name ();
	if (lflag=='+') print_last_login ();

	fin0 = copen (sconcat (fnam0, 2, user, " mail"), 'r');
	fin1 = copen (sconcat (fnam1, 3, "common;", user, " mail"), 'r');
	fin2 = copen (sconcat (fnam2, 3, "common;", user, " sends"), 'r');

	saved = backed_up = want_to_save = FALSE;
	able_to_print = TRUE;
	if (mail_exists ())
		{puts ("\nYou have mail.");
		if (ask ("Read Mail", rflag))
			{backed_up = type_files ();
			if (!backed_up || ask ("Save Mail", sflag))
				{want_to_save = TRUE;
				saved = copy_files ();
				if (saved && !backed_up && sflag!='+')
					puts ("\n(mail saved)");
				}
			if (ask ("Print Mail", pflag))
				able_to_print = print_files ();
			if ((want_to_save && !saved) ||
				(!able_to_print && !saved))
				puts ("\n(mail not deleted -- will be reread)\n");
			else delete_files ();
			}
		close_files ();
		}

	if (!saved) check_for_old_mail ();
	if (tflag=='+') check_for_teco_files ();
	}

/**********************************************************************

	AUXILIARY ROUTINES

**********************************************************************/

process_options (argc, argv)
	int argc;
	char *argv[];

	{char *s;
	int c;

	while (--argc>=0)
		{s = *argv++;
		c = s[0];
		if (c=='-' || c=='+') switch (lower (s[1])) {
			case 'l':	lflag = c; continue;
			case 's':	sflag = c; continue;
			case 'p':	pflag = c; continue;
			case 'r':	rflag = c; continue;
			case 't':	tflag = c; continue;
			case 'u':	uflag = c; continue;
			}
		else if (s[1]=='=') switch (lower (s[0])) {
			case 's':	save_name = s+2; continue;
			case 'p':	print_name = s+2; continue;
			case 't':	teco_name = s+2; continue;
			}
		cprint ("Unrecognized Option: %s\n", s);
		}
	}

int mail_exists ()
	{return (fin0>=0 || fin1>=0 || fin2>=0);}

int type_files ()

	{int out, temp, setsf();
	char fname[40];

	s_hit = FALSE;
	on (ctrls_interrupt, 1);
	on (ctrls_interrupt, setsf);
	out = copen (sconcat (fname, 3, "vanish;", user, " omail"), 'a');
	file_type (fin0, out);
	file_type (fin1, out);
	file_type (fin2, out);
	if (out>=0) cclose (out);
	on (ctrls_interrupt, 0);
	temp = s_hit;
	s_hit = FALSE;
	return (!temp);
	}

file_type (in, out)

	{int c;

	if (in<0 || s_hit) return;
	cputc ('\n', cout);
	if (out>=0) cputc ('\n', out);
	while ((c = cgetc (in)) > 0 || !ceof (in))
		{cputc (c, cout);
		if (out>=0) cputc (c, out);
		if (s_hit)
			{if (out>=0) cputc ('\n', out);
			break;
			}
		}
	if (!s_hit) cputc ('\n', cout);
	rew (in);
	}

copy_files ()

	{int out;
	char buf[100];

	out = copen (sconcat (buf, 2, save_name, " > dsk:"), 'w');
	if (out<0)
		{puts ("unable to save mail");
		return (FALSE);
		}
	if (fin0>=0) file_copy (fin0, out);
	if (fin1>=0) file_copy (fin1, out);
	if (fin2>=0) file_copy (fin2, out);
	cclose (out);
	return (TRUE);
	}

int print_files ()

	{int out;

	out = copen (print_name, 'w');
	if (out < 0)
		{puts ("unable to print mail");
		return (FALSE);
		}
	if (fin0>=0) file_copy (fin0, out);
	if (fin1>=0) file_copy (fin1, out);
	if (fin2>=0) file_copy (fin2, out);
	cclose (out);
	return (TRUE);
	}

file_copy (in, out)

	{int c;

	cputc ('\n', out);
	while ((c = cgetc (in)) > 0 || !ceof (in)) cputc (c, out);
	rew (in);
	}

get_user_name ()

	{c6tos (rsname (), user);
	}

print_user_name ()

	{cprint ("\nUser: %s\n", user);}

print_last_login ()

	{int f, fdate;
	cal cdate;

	f = fopen ("_last_.login", 2);
	if (f >= 0)
		{if ((fdate = rfdate (f)) != -1)
			{f2cal (fdate, &cdate);
			cprint ("Last login: ");
			prcal (&cdate, cout);
			cputc ('\n', cout);
			}
		now (&cdate);
		sfdate (f, cal2f (&cdate));
		close (f);
		}
	else close (fopen ("_last_.login", 3));
	}

delete_files ()

	{if (fin0>=0) delete (fnam0);
	if (fin1>=0) delete (fnam1);
	if (fin2>=0) delete (fnam2);
	}

close_files ()

	{if (fin0>=0) cclose (fin0);
	if (fin1>=0) cclose (fin1);
	if (fin2>=0) cclose (fin2);
	}

check_for_old_mail ()

	{int f;
	char buf[100];

	f = fopen (sconcat (buf, 2, save_name, " < dsk:"), 0);
	if (f>=0)
		{puts ("\nYou have old mail in your directory.");
		close (f);
		}
	}

check_for_teco_files ()

	{int f;

	f = fopen (teco_name, 0);
	if (f>=0)
		{puts ("\nYou have TECO save files in your directory.");
		close (f);
		}
	}

int ask (s, flag)
	char *s;

	{int c;

	if (flag=='+') return (TRUE);
	if (flag=='-') return (FALSE);
	while (TRUE)
		{tyos (s);
		tyos (" (Y or N)? ");
		while (TRUE)
			{c = lower (utyi ());
			if (c=='y') {tyos ("yes\r"); return (TRUE);}
			if (c=='n') {tyos ("no\r"); return (FALSE);}
			if (c=='\p') {spctty ('C'); break;}
			tyo (07);
			}
		}
	}

char *sconcat(buf,n,s1,s2,s3)
	char *s1, *s2, *s3;

	{int c;
	char **s, *p, *q;
	p = buf;
	s = &s1;
	while (--n >= 0)
		{q = *s++;
		while (c = *q++) *p++ = c;
		}
	*p = 0;
	return (buf);
	}

setsf ()
	{s_hit = TRUE;
	tyo ('\r');
	}