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         CIRCLEQ_INIT(&gp->hq);
  53         gp->noprint = DEFAULT_NOPRINT;
  54
  55         /* Structures shared by screens so stored in the GS structure. */
  56         CIRCLEQ_INIT(&gp->frefq);
  57         CIRCLEQ_INIT(&gp->exfq);
  58         LIST_INIT(&gp->seqq);
  59
  60         thread_init(gp);
  61
  62         return (gp);
  63 }
  64
  65 /*
  66  * gs_new_win
  67  *      Create new window
  68  * PUBLIC: WIN * gs_new_win __P((GS *gp));
  69  */
  70
  71 WIN *
  72 gs_new_win(GS *gp)
  73 {
  74         WIN *wp;
  75
  76         CALLOC_NOMSG(NULL, wp, WIN *, 1, sizeof(*wp));
  77         if (!wp)
  78                 return NULL;
  79
  80         /* Common global structure initialization. */
  81         LIST_INIT(&wp->ecq);
  82         LIST_INSERT_HEAD(&wp->ecq, &wp->excmd, q);
  83
  84         CIRCLEQ_INSERT_TAIL(&gp->dq, wp, q);
  85         CIRCLEQ_INIT(&wp->scrq);
  86
  87         CIRCLEQ_INIT(&wp->dcb_store.textq);
  88         LIST_INIT(&wp->cutq);
  89
  90         wp->gp = gp;
  91
  92         return wp;
  93 }
  94
  95 /*
  96  * win_end --
  97  *      Remove window.
  98  *
  99  * PUBLIC: int win_end __P((WIN *wp));
 100  */
 101 int
 102 win_end(WIN *wp)
 103 {
 104         SCR *sp;
 105
 106         CIRCLEQ_REMOVE(&wp->gp->dq, wp, q);
 107
 108         while ((sp = wp->scrq.cqh_first) != (void *)&wp->scrq)
 109                 (void)screen_end(sp);
 110
 111         /* Free key input queue. */
 112         if (wp->i_event != NULL)
 113                 free(wp->i_event);
 114
 115         /* Free cut buffers. */
 116         cut_close(wp);
 117
 118         /* Free default buffer storage. */
 119         (void)text_lfree(&wp->dcb_store.textq);
 120
 121 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 122         /* Free any temporary space. */
 123         if (wp->tmp_bp != NULL)
 124                 free(wp->tmp_bp);
 125 #endif
 126
 127         return 0;
 128 }
 129
 130 /*
 131  * gs_end --
 132  *      End the program, discarding screens and most of the global area.
 133  *
 134  * PUBLIC: void gs_end __P((GS *));
 135  */
 136 void
 137 gs_end(gp)
 138         GS *gp;
 139 {
 140         MSGS *mp;
 141         SCR *sp;
 142         WIN *wp;
 143
 144         /* If there are any remaining screens, kill them off. */
 145         if (gp->ccl_sp != NULL) {
 146                 (void)file_end(gp->ccl_sp, NULL, 1);
 147                 (void)screen_end(gp->ccl_sp);
 148         }
 149         while ((wp = gp->dq.cqh_first) != (void *)&gp->dq)
 150                 (void)win_end(wp);
 151         while ((sp = gp->hq.cqh_first) != (void *)&gp->hq)
 152                 (void)screen_end(sp);
 153
 154 #ifdef HAVE_PERL_INTERP
 155         perl_end(gp);
 156 #endif
 157
 158 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 159         { FREF *frp;
 160                 /* Free FREF's. */
 161                 while ((frp = gp->frefq.cqh_first) != (FREF *)&gp->frefq) {
 162                         CIRCLEQ_REMOVE(&gp->frefq, frp, q);
 163                         if (frp->name != NULL)
 164                                 free(frp->name);
 165                         if (frp->tname != NULL)
 166                                 free(frp->tname);
 167                         free(frp);
 168                 }
 169         }
 170
 171         /* Free map sequences. */
 172         seq_close(gp);
 173
 174         /* Close message catalogs. */
 175         msg_close(gp);
 176 #endif
 177         if (gp->env) {
 178                 gp->env->remove(gp->env, NULL, 0);
 179                 /*
 180                 gp->env->close(gp->env, 0);
 181                 */
 182         }
 183
 184         /* Ring the bell if scheduled. */
 185         if (F_ISSET(gp, G_BELLSCHED))
 186                 (void)fprintf(stderr, "\07");           /* \a */
 187
 188         /*
 189          * Flush any remaining messages.  If a message is here, it's almost
 190          * certainly the message about the event that killed us (although
 191          * it's possible that the user is sourcing a file that exits from the
 192          * editor).
 193          */
 194         while ((mp = gp->msgq.lh_first) != NULL) {
 195                 (void)fprintf(stderr, "%s%.*s",
 196                     mp->mtype == M_ERR ? "ex/vi: " : "", (int)mp->len, mp->buf);
 197                 LIST_REMOVE(mp, q);
 198 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
 199                 free(mp->buf);
 200                 free(mp);
 201 #endif
 202         }
 203
 204 #if defined(TRACE)
 205         /* Close tracing file descriptor. */
 206         vtrace_end();
 207 #endif
 208 }
 209
 210
 211 /*
 212  * perr --
 213  *      Print system error.
 214  */
 215 static void
 216 perr(name, msg)
 217         char *name, *msg;
 218 {
 219         (void)fprintf(stderr, "%s:", name);
 220         if (msg != NULL)
 221                 (void)fprintf(stderr, "%s:", msg);
 222         (void)fprintf(stderr, "%s\n", strerror(errno));
 223         exit(1);
 224 }