/* * vs_ex_resolve -- * Deal with ex message output. * * This routine is called when exiting a colon command to resolve any ex * output that may have occurred. * * PUBLIC: int vs_ex_resolve __P((SCR *, int *)); */ int vs_ex_resolve(SCR *sp, int *continuep) { EVENT ev; GS *gp; VI_PRIVATE *vip; sw_t wtype; gp = sp->gp; vip = VIP(sp); *continuep = 0; /* If we ran any ex command, we can't trust the cursor position. */ F_SET(vip, VIP_CUR_INVALID); /* Terminate any partially written message. */ if (vip->lcontinue != 0) { vs_output(sp, vip->mtype, ".", 1); vip->lcontinue = 0; vip->mtype = M_NONE; } /* * If we switched out of the vi screen into ex, switch back while we * figure out what to do with the screen and potentially get another * command to execute. * * If we didn't switch into ex, we're not required to wait, and less * than 2 lines of output, we can continue without waiting for the * wait. * * Note, all other code paths require waiting, so we leave the report * of modified lines until later, so that we won't wait for no other * reason than a threshold number of lines were modified. This means * we display cumulative line modification reports for groups of ex * commands. That seems right to me (well, at least not wrong). */ if (F_ISSET(sp, SC_SCR_EXWROTE)) { if (sp->gp->scr_screen(sp, SC_VI)) return (1); } else if (!F_ISSET(sp, SC_EX_WAIT_YES) && vip->totalcount < 2) { F_CLR(sp, SC_EX_WAIT_NO); return (0); } /* Clear the required wait flag, it's no longer needed. */ F_CLR(sp, SC_EX_WAIT_YES); /* * Wait, unless explicitly told not to wait or the user interrupted * the command. If the user is leaving the screen, for any reason, * they can't continue with further ex commands. */ if (!F_ISSET(sp, SC_EX_WAIT_NO) && !INTERRUPTED(sp)) { wtype = F_ISSET(sp, SC_EXIT | SC_EXIT_FORCE | SC_FSWITCH | SC_SSWITCH) ? SCROLL_W : SCROLL_W_EX; if (F_ISSET(sp, SC_SCR_EXWROTE)) vs_wait(sp, continuep, wtype); else vs_scroll(sp, continuep, wtype); if (*continuep) return (0); } /* If ex wrote on the screen, refresh the screen image. */ if (F_ISSET(sp, SC_SCR_EXWROTE)) F_SET(vip, VIP_N_EX_PAINT); /* * If we're not the bottom of the split screen stack, the screen * image itself is wrong, so redraw everything. */ if (sp->q.cqe_next != (void *)&sp->wp->scrq) F_SET(sp, SC_SCR_REDRAW); /* If ex changed the underlying file, the map itself is wrong. */ if (F_ISSET(vip, VIP_N_EX_REDRAW)) F_SET(sp, SC_SCR_REFORMAT); /* Ex may have switched out of the alternate screen, return. */ (void)gp->scr_attr(sp, SA_ALTERNATE, 1); /* * Whew. We're finally back home, after what feels like years. * Kiss the ground. */ F_CLR(sp, SC_SCR_EXWROTE | SC_EX_WAIT_NO); /* * We may need to repaint some of the screen, e.g.: * * :set * :!ls * * gives us a combination of some lines that are "wrong", and a need * for a full refresh. */ if (vip->totalcount > 1) { /* Set up the redraw of the overwritten lines. */ ev.e_event = E_REPAINT; ev.e_flno = vip->totalcount >= sp->rows ? 1 : sp->rows - vip->totalcount; ev.e_tlno = sp->rows; /* Reset the count of overwriting lines. */ vip->linecount = vip->lcontinue = vip->totalcount = 0; /* Redraw. */ (void)v_erepaint(sp, &ev); } else /* Reset the count of overwriting lines. */ vip->linecount = vip->lcontinue = vip->totalcount = 0; return (0); }
/* * vs_resolve -- * Deal with message output. * * PUBLIC: int vs_resolve __P((SCR *, SCR *, int)); */ int vs_resolve(SCR *sp, SCR *csp, int forcewait) { EVENT ev; GS *gp; WIN *wp; MSGS *mp; VI_PRIVATE *vip; size_t oldy, oldx; int redraw; /* * Vs_resolve is called from the main vi loop and the refresh function * to periodically ensure that the user has seen any messages that have * been displayed and that any status lines are correct. The sp screen * is the screen we're checking, usually the current screen. When it's * not, csp is the current screen, used for final cursor positioning. */ gp = sp->gp; wp = sp->wp; vip = VIP(sp); if (csp == NULL) csp = sp; /* Save the cursor position. */ (void)gp->scr_cursor(csp, &oldy, &oldx); /* Ring the bell if it's scheduled. */ if (F_ISSET(gp, G_BELLSCHED)) { F_CLR(gp, G_BELLSCHED); (void)gp->scr_bell(sp); } /* Display new file status line. */ if (F_ISSET(sp, SC_STATUS)) { F_CLR(sp, SC_STATUS); msgq_status(sp, sp->lno, MSTAT_TRUNCATE); } /* Report on line modifications. */ mod_rpt(sp); /* * Flush any saved messages. If the screen isn't ready, refresh * it. (A side-effect of screen refresh is that we can display * messages.) Once this is done, don't trust the cursor. That * extra refresh screwed the pooch. */ if (gp->msgq.lh_first != NULL) { if (!F_ISSET(sp, SC_SCR_VI) && vs_refresh(sp, 1)) return (1); while ((mp = gp->msgq.lh_first) != NULL) { wp->scr_msg(sp, mp->mtype, mp->buf, mp->len); LIST_REMOVE(mp, q); free(mp->buf); free(mp); } F_SET(vip, VIP_CUR_INVALID); } switch (vip->totalcount) { case 0: redraw = 0; break; case 1: /* * If we're switching screens, we have to wait for messages, * regardless. If we don't wait, skip updating the modeline. */ if (forcewait) vs_scroll(sp, NULL, SCROLL_W); else F_SET(vip, VIP_S_MODELINE); redraw = 0; break; default: /* * If >1 message line in use, prompt the user to continue and * repaint overwritten lines. */ vs_scroll(sp, NULL, SCROLL_W); ev.e_event = E_REPAINT; ev.e_flno = vip->totalcount >= sp->rows ? 1 : sp->rows - vip->totalcount; ev.e_tlno = sp->rows; redraw = 1; break; } /* Reset the count of overwriting lines. */ vip->linecount = vip->lcontinue = vip->totalcount = 0; /* Redraw. */ if (redraw) (void)v_erepaint(sp, &ev); /* Restore the cursor position. */ (void)gp->scr_move(csp, oldy, oldx); return (0); }
/* * v_key -- * Return the next event. */ static gcret_t v_key(SCR *sp, VICMD *vp, int events_ok, u_int32_t ec_flags) { EVENT *evp; u_int32_t quote; for (evp = &vp->ev, quote = 0;;) { if (v_event_get(sp, evp, 0, ec_flags | quote)) return (GC_FATAL); quote = 0; switch (evp->e_event) { case E_CHARACTER: /* * !!! * Historically, ^V was ignored in the command stream, * although it had a useful side-effect of interrupting * mappings. Adding a quoting bit to the call probably * extends historic practice, but it feels right. */ if (evp->e_value == K_VLNEXT) { quote = EC_QUOTED; break; } return (GC_OK); case E_ERR: case E_EOF: return (GC_FATAL); case E_INTERRUPT: /* * !!! * Historically, vi beeped on command level interrupts. * * Historically, vi exited to ex mode if no file was * named on the command line, and two interrupts were * generated in a row. (I figured you might want to * know that, just in case there's a quiz later.) */ (void)sp->gp->scr_bell(sp); return (GC_INTERRUPT); case E_REPAINT: if (v_erepaint(sp, evp)) return (GC_FATAL); break; case E_WRESIZE: /* * !!! * We don't do anything here, just return an error. * The vi loop will return because of this, and then * the main loop will realize that we had to restart * the world and will call the vi loop again. */ return (GC_ERR); case E_IPCOMMAND: if (events_ok) return (GC_EVENT); /* FALLTHROUGH */ default: v_event_err(sp, evp); return (GC_ERR); } } /* NOTREACHED */ }