ip/ip_main.c

   1 /*-
   2  * Copyright (c) 1996
   3  *      Keith Bostic.  All rights reserved.
   4  *
   5  * See the LICENSE file for redistribution information.
   6  */
   7
   8 #include "config.h"
   9
  10 #ifndef lint
  11 static const char sccsid[] = "$Id: ip_main.c,v 8.7 1996/12/11 13:34:22 bostic Exp $ (Berkeley) $Date: 1996/12/11 13:34:22 $";
  12 #endif /* not lint */
  13
  14 #include <sys/types.h>
  15 #include <sys/queue.h>
  16
  17 #include <bitstring.h>
  18 #include <ctype.h>
  19 #include <errno.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include "../common/common.h"
  25 #include "ip.h"
  26 #include "../include/ipc_extern.h"
  27
  28 int vi_ofd;                             /* GLOBAL: known to __vi_send(). */
  29
  30 static void        ip_func_std __P((GS *));
  31 static IP_PRIVATE *ip_init __P((GS *, char *));
  32 static void        perr __P((char *, char *));
  33
  34 /*
  35  * ip_main --
  36  *      This is the main loop for the vi-as-library editor.
  37  *
  38  * PUBLIC: int ip_main __P((int, char *[], GS *, char *));
  39  */
  40 int
  41 ip_main(argc, argv, gp, ip_arg)
  42         int argc;
  43         char *argv[], *ip_arg;
  44         GS *gp;
  45 {
  46         EVENT ev;
  47         IP_PRIVATE *ipp;
  48         IP_BUF ipb;
  49         int rval;
  50
  51         /* Create and partially initialize the IP structure. */
  52         if ((ipp = ip_init(gp, ip_arg)) == NULL)
  53                 return (1);
  54
  55         /* Add the terminal type to the global structure. */
  56         if ((OG_D_STR(gp, GO_TERM) =
  57             OG_STR(gp, GO_TERM) = strdup("ip_curses")) == NULL)
  58                 perr(gp->progname, NULL);
  59
  60         /*
  61          * Figure out how big the screen is -- read events until we get
  62          * the rows and columns.
  63          */
  64         for (;;) {
  65                 if (ip_event(NULL, &ev, 0, 0))
  66                         return (1);
  67                 if (ev.e_event == E_WRESIZE)
  68                         break;
  69                 if (ev.e_event == E_EOF || ev.e_event == E_ERR ||
  70                     ev.e_event == E_SIGHUP || ev.e_event == E_SIGTERM)
  71                         return (1);
  72                 if (ev.e_event == E_IPCOMMAND && ev.e_ipcom == VI_QUIT)
  73                         return (1);
  74         }
  75
  76         /* Run ex/vi. */
  77         rval = editor(gp, argc, argv);
  78
  79         /* Clean up the screen. */
  80         (void)ip_quit(gp);
  81
  82         /* Send the quit message. */
  83         ipb.code = SI_QUIT;
  84         (void)__vi_send(NULL, &ipb);
  85
  86         /* Give the screen a couple of seconds to deal with it. */
  87         sleep(2);
  88
  89         /* Free the global and IP private areas. */
  90 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
  91         free(ipp);
  92         free(gp);
  93 #endif
  94         return (rval);
  95 }
  96
  97 /*
  98  * ip_init --
  99  *      Create and partially initialize the GS structure.
 100  */
 101 static IP_PRIVATE *
 102 ip_init(gp, ip_arg)
 103         GS *gp;
 104         char *ip_arg;
 105 {
 106         IP_PRIVATE *ipp;
 107         char *ep;
 108
 109         /* Allocate the IP private structure. */
 110         CALLOC_NOMSG(NULL, ipp, IP_PRIVATE *, 1, sizeof(IP_PRIVATE));
 111         if (ipp == NULL)
 112                 perr(gp->progname,  NULL);
 113         gp->ip_private = ipp;
 114
 115         /*
 116          * Crack ip_arg -- it's of the form #.#, where the first number is the
 117          * file descriptor from the screen, the second is the file descriptor
 118          * to the screen.
 119          */
 120         if (!isdigit(ip_arg[0]))
 121                 goto usage;
 122         ipp->i_fd = strtol(ip_arg, &ep, 10);
 123         if (ep[0] != '.' || !isdigit(ep[1]))
 124                 goto usage;
 125         vi_ofd = strtol(++ep, &ep, 10);
 126         if (ep[0] != '\0') {
 127 usage:          ip_usage();
 128                 return (NULL);
 129         }
 130
 131         /* Initialize the list of ip functions. */
 132         ip_func_std(gp);
 133
 134         return (ipp);
 135 }
 136
 137 /*
 138  * ip_func_std --
 139  *      Initialize the standard ip functions.
 140  */
 141 static void
 142 ip_func_std(gp)
 143         GS *gp;
 144 {
 145         gp->scr_addstr = ip_addstr;
 146         gp->scr_attr = ip_attr;
 147         gp->scr_baud = ip_baud;
 148         gp->scr_bell = ip_bell;
 149         gp->scr_busy = ip_busy;
 150         gp->scr_clrtoeol = ip_clrtoeol;
 151         gp->scr_cursor = ip_cursor;
 152         gp->scr_deleteln = ip_deleteln;
 153         gp->scr_discard = ip_discard;
 154         gp->scr_event = ip_event;
 155         gp->scr_ex_adjust = ip_ex_adjust;
 156         gp->scr_fmap = ip_fmap;
 157         gp->scr_insertln = ip_insertln;
 158         gp->scr_keyval = ip_keyval;
 159         gp->scr_move = ip_move;
 160         gp->scr_msg = NULL;
 161         gp->scr_optchange = ip_optchange;
 162         gp->scr_refresh = ip_refresh;
 163         gp->scr_rename = ip_rename;
 164         gp->scr_screen = ip_screen;
 165         gp->scr_split = ip_split;
 166         gp->scr_suspend = ip_suspend;
 167         gp->scr_usage = ip_usage;
 168 }
 169
 170 /*
 171  * perr --
 172  *      Print system error.
 173  */
 174 static void
 175 perr(name, msg)
 176         char *name, *msg;
 177 {
 178         (void)fprintf(stderr, "%s:", name);
 179         if (msg != NULL)
 180                 (void)fprintf(stderr, "%s:", msg);
 181         (void)fprintf(stderr, "%s\n", strerror(errno));
 182         exit(1);
 183 }