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