/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)ex_init.c 8.1 (Berkeley) 6/9/93"; #endif /* not lint */ #include <sys/types.h> #include <stdlib.h> #include <string.h> #include "vi.h" #include "excmd.h" /* * ex_init -- * Initialize ex. */ int ex_init(sp, ep) SCR *sp; EXF *ep; { size_t len; /* * If no starting location specified, ex starts at the end. * Otherwise, check to make sure that the location exists. */ if (F_ISSET(ep, F_NOSETPOS)) { if (file_lline(sp, ep, &sp->lno)) return (1); if (sp->lno == 0) sp->lno = 1; sp->cno = 0; F_CLR(sp, F_NOSETPOS); } else { if (file_gline(sp, ep, sp->lno, &len) == NULL) { if (file_lline(sp, ep, &sp->lno)) return (1); if (sp->lno == 0) sp->lno = 1; sp->cno = 0; } else if (sp->cno >= len) sp->cno = 0; } /* * After location established, run any initial command. Failure * doesn't halt the session. Don't worry about the cursor being * repositioned affecting the success of this command, it's * pretty unlikely. */ if (F_ISSET(ep, F_ICOMMAND)) { (void)ex_cstring(sp, ep, ep->icommand, strlen(ep->icommand)); free(ep->icommand); F_CLR(ep, F_ICOMMAND); } /* Display the status line. */ return (status(sp, ep, sp->lno, 0)); } /* * ex_end -- * End ex session. */ int ex_end(sp) SCR *sp; { return (0); }