common/gs.c

   1 /*-
   2  * Copyright (c) 2000
   3  *      Sven Verdoolaege.  All rights reserved.
   4  *
   5  * See the LICENSE file for redistribution information.
   6  */
   7
   8 #include "config.h"
   9
  10 #include <sys/types.h>
  11 #include <sys/queue.h>
  12
  13 #include <bitstring.h>
  14 #include <ctype.h>
  15 #include <errno.h>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20
  21 #include "../common/common.h"
  22
  23 static void        perr __P((char *, char *));
  24
  25 /*
  26  * gs_init --
  27  *      Create and partially initialize the GS structure.
  28  * PUBLIC: GS * gs_init __P((char*));
  29  */
  30 GS *
  31 gs_init(name)
  32         char *name;
  33 {
  34         GS *gp;
  35         char *p;
  36
  37         /* Figure out what our name is. */
  38         if ((p = strrchr(name, '/')) != NULL)
  39                 name = p + 1;
  40
  41         /* Allocate the global structure. */
  42         CALLOC_NOMSG(NULL, gp, GS *, 1, sizeof(GS));
  43         if (gp == NULL)
  44                 perr(name, NULL);
  45
  46         gp->progname = name;
  47
  48         /* Common global structure initialization. */
  49         /* others will need to be copied from main.c */
  50         CIRCLEQ_INIT(&gp->dq);
  51
  52         thread_init(gp);
  53
  54         return (gp);
  55 }
  56
  57 /*
  58  * gs_new_win
  59  *      Create new window
  60  * PUBLIC: WIN * gs_new_win __P((GS *gp));
  61  */
  62
  63 WIN *
  64 gs_new_win(GS *gp)
  65 {
  66         WIN *wp;
  67
  68         CALLOC_NOMSG(NULL, wp, WIN *, 1, sizeof(*wp));
  69         if (!wp)
  70                 return NULL;
  71
  72         /* Common global structure initialization. */
  73         LIST_INIT(&wp->ecq);
  74         LIST_INSERT_HEAD(&wp->ecq, &wp->excmd, q);
  75
  76         CIRCLEQ_INSERT_TAIL(&gp->dq, wp, q);
  77         CIRCLEQ_INIT(&wp->scrq);
  78
  79         wp->gp = gp;
  80
  81         return wp;
  82 }
  83
  84 /*
  85  * gs_end --
  86  *      End the program, discarding screens and most of the global area.
  87  *
  88  * PUBLIC: void gs_end __P((GS *));
  89  */
  90 void
  91 gs_end(gp)
  92         GS *gp;
  93 {
  94         MSGS *mp;
  95         SCR *sp;
  96         WIN *wp;
  97
  98         /* If there are any remaining screens, kill them off. */
  99         if (gp->ccl_sp != NULL) {
 100                 (void)file_end(gp->ccl_sp, NULL, 1);
 101                 (void)screen_end(gp->ccl_sp);
 102         }
 103         for (wp = gp->dq.cqh_first; wp != (void *)&gp->dq;
 104             wp = wp->q.cqe_next)
 105                 while ((sp = wp->scrq.cqh_first) != (void *)&wp->scrq)
 106                 (void)screen_end(sp);
 107         while ((sp = gp->hq.cqh_first) != (void *)&gp->hq)
 108                 (void)screen_end(sp);
 109
 110 #ifdef HAVE_PERL_INTERP
 111         perl_end(gp);
 112 #endif
 113
 114 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 115         { FREF *frp;
 116                 /* Free FREF's. */
 117                 while ((frp = gp->frefq.cqh_first) != (FREF *)&gp->frefq) {
 118                         CIRCLEQ_REMOVE(&gp->frefq, frp, q);
 119                         if (frp->name != NULL)
 120                                 free(frp->name);
 121                         if (frp->tname != NULL)
 122                                 free(frp->tname);
 123                         free(frp);
 124                 }
 125         }
 126
 127         /* Free key input queue. */
 128         if (gp->i_event != NULL)
 129                 free(gp->i_event);
 130
 131         /* Free cut buffers. */
 132         cut_close(gp);
 133
 134         /* Free map sequences. */
 135         seq_close(gp);
 136
 137         /* Free default buffer storage. */
 138         (void)text_lfree(&gp->dcb_store.textq);
 139
 140         /* Close message catalogs. */
 141         msg_close(gp);
 142 #endif
 143
 144         /* Ring the bell if scheduled. */
 145         if (F_ISSET(gp, G_BELLSCHED))
 146                 (void)fprintf(stderr, "\07");           /* \a */
 147
 148         /*
 149          * Flush any remaining messages.  If a message is here, it's almost
 150          * certainly the message about the event that killed us (although
 151          * it's possible that the user is sourcing a file that exits from the
 152          * editor).
 153          */
 154         while ((mp = gp->msgq.lh_first) != NULL) {
 155                 (void)fprintf(stderr, "%s%.*s",
 156                     mp->mtype == M_ERR ? "ex/vi: " : "", (int)mp->len, mp->buf);
 157                 LIST_REMOVE(mp, q);
 158 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 159                 free(mp->buf);
 160                 free(mp);
 161 #endif
 162         }
 163
 164 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 165         /* Free any temporary space. */
 166         if (gp->tmp_bp != NULL)
 167                 free(gp->tmp_bp);
 168
 169 #if defined(TRACE)
 170         /* Close tracing file descriptor. */
 171         vtrace_end();
 172 #endif
 173 #endif
 174 }
 175
 176
 177 /*
 178  * perr --
 179  *      Print system error.
 180  */
 181 static void
 182 perr(name, msg)
 183         char *name, *msg;
 184 {
 185         (void)fprintf(stderr, "%s:", name);
 186         if (msg != NULL)
 187                 (void)fprintf(stderr, "%s:", msg);
 188         (void)fprintf(stderr, "%s\n", strerror(errno));
 189         exit(1);
 190 }