332 lines
6.5 KiB
C
332 lines
6.5 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: ex_print.c,v 10.26 2013/11/02 02:11:07 zy Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "../common/common.h"
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static int ex_prchars(SCR *,
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const CHAR_T *, size_t *, size_t, u_int, int);
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/*
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* ex_list -- :[line [,line]] l[ist] [count] [flags]
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*
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* Display the addressed lines such that the output is unambiguous.
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*
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* PUBLIC: int ex_list(SCR *, EXCMD *);
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*/
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int
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ex_list(SCR *sp, EXCMD *cmdp)
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{
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if (ex_print(sp, cmdp,
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&cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_LIST))
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return (1);
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sp->lno = cmdp->addr2.lno;
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sp->cno = cmdp->addr2.cno;
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return (0);
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}
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/*
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* ex_number -- :[line [,line]] nu[mber] [count] [flags]
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*
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* Display the addressed lines with a leading line number.
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*
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* PUBLIC: int ex_number(SCR *, EXCMD *);
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*/
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int
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ex_number(SCR *sp, EXCMD *cmdp)
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{
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if (ex_print(sp, cmdp,
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&cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_HASH))
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return (1);
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sp->lno = cmdp->addr2.lno;
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sp->cno = cmdp->addr2.cno;
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return (0);
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}
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/*
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* ex_pr -- :[line [,line]] p[rint] [count] [flags]
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*
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* Display the addressed lines.
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*
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* PUBLIC: int ex_pr(SCR *, EXCMD *);
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*/
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int
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ex_pr(SCR *sp, EXCMD *cmdp)
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{
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if (ex_print(sp, cmdp, &cmdp->addr1, &cmdp->addr2, cmdp->iflags))
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return (1);
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sp->lno = cmdp->addr2.lno;
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sp->cno = cmdp->addr2.cno;
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return (0);
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}
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/*
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* ex_print --
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* Print the selected lines.
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*
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* PUBLIC: int ex_print(SCR *, EXCMD *, MARK *, MARK *, u_int32_t);
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*/
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int
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ex_print(SCR *sp, EXCMD *cmdp, MARK *fp, MARK *tp, u_int32_t flags)
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{
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GS *gp;
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recno_t from, to;
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size_t col, len;
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CHAR_T *p;
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CHAR_T buf[10];
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NEEDFILE(sp, cmdp);
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gp = sp->gp;
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for (from = fp->lno, to = tp->lno; from <= to; ++from) {
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col = 0;
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/*
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* Display the line number. The %6 format is specified
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* by POSIX 1003.2, and is almost certainly large enough.
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* Check, though, just in case.
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*/
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if (LF_ISSET(E_C_HASH)) {
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if (from <= 999999) {
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SPRINTF(buf, SIZE(buf), L("%6u "), from);
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p = buf;
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} else
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p = L("TOOBIG ");
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if (ex_prchars(sp, p, &col, 8, 0, 0))
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return (1);
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}
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/*
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* Display the line. The format for E_C_PRINT isn't very good,
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* especially in handling end-of-line tabs, but they're almost
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* backward compatible.
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*/
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if (db_get(sp, from, DBG_FATAL, &p, &len))
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return (1);
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if (len == 0 && !LF_ISSET(E_C_LIST))
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(void)ex_puts(sp, "\n");
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else if (ex_ldisplay(sp, p, len, col, flags))
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return (1);
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if (INTERRUPTED(sp))
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break;
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}
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return (0);
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}
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/*
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* ex_ldisplay --
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* Display a line without any preceding number.
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*
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* PUBLIC: int ex_ldisplay(SCR *, const CHAR_T *, size_t, size_t, u_int);
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*/
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int
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ex_ldisplay(SCR *sp, const CHAR_T *p, size_t len, size_t col, u_int flags)
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{
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if (len > 0 && ex_prchars(sp, p, &col, len, LF_ISSET(E_C_LIST), 0))
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return (1);
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if (!INTERRUPTED(sp) && LF_ISSET(E_C_LIST)) {
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p = L("$");
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if (ex_prchars(sp, p, &col, 1, LF_ISSET(E_C_LIST), 0))
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return (1);
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}
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if (!INTERRUPTED(sp))
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(void)ex_puts(sp, "\n");
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return (0);
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}
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/*
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* ex_scprint --
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* Display a line for the substitute with confirmation routine.
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*
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* PUBLIC: int ex_scprint(SCR *, MARK *, MARK *);
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*/
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int
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ex_scprint(SCR *sp, MARK *fp, MARK *tp)
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{
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CHAR_T *p;
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size_t col, len;
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col = 0;
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if (O_ISSET(sp, O_NUMBER)) {
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p = L(" ");
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if (ex_prchars(sp, p, &col, 8, 0, 0))
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return (1);
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}
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if (db_get(sp, fp->lno, DBG_FATAL, &p, &len))
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return (1);
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if (ex_prchars(sp, p, &col, fp->cno, 0, ' '))
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return (1);
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p += fp->cno;
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if (ex_prchars(sp,
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p, &col, tp->cno == fp->cno ? 1 : tp->cno - fp->cno, 0, '^'))
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return (1);
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if (INTERRUPTED(sp))
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return (1);
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p = L("[ynq]"); /* XXX: should be msg_cat. */
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if (ex_prchars(sp, p, &col, 5, 0, 0))
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return (1);
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(void)ex_fflush(sp);
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return (0);
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}
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/*
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* ex_prchars --
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* Local routine to dump characters to the screen.
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*/
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static int
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ex_prchars(SCR *sp, const CHAR_T *p, size_t *colp, size_t len,
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u_int flags, int repeatc)
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{
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CHAR_T ch;
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char *kp;
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GS *gp;
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size_t col, tlen, ts;
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if (O_ISSET(sp, O_LIST))
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LF_SET(E_C_LIST);
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gp = sp->gp;
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ts = O_VAL(sp, O_TABSTOP);
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for (col = *colp; len--;)
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if ((ch = *p++) == L('\t') && !LF_ISSET(E_C_LIST))
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for (tlen = ts - col % ts;
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col < sp->cols && tlen--; ++col) {
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(void)ex_printf(sp,
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"%c", repeatc ? repeatc : ' ');
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if (INTERRUPTED(sp))
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goto intr;
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}
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else {
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kp = KEY_NAME(sp, ch);
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tlen = KEY_COL(sp, ch);
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/*
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* Start a new line if the last character does not fit
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* into the current line. The implicit new lines are
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* not interruptible.
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*/
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if (col + tlen > sp->cols) {
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col = 0;
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(void)ex_puts(sp, "\n");
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}
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col += tlen;
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if (!repeatc) {
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(void)ex_puts(sp, kp);
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if (INTERRUPTED(sp))
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goto intr;
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} else while (tlen--) {
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(void)ex_printf(sp, "%c", repeatc);
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if (INTERRUPTED(sp))
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goto intr;
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}
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if (col == sp->cols) {
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col = 0;
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(void)ex_puts(sp, "\n");
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}
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}
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intr: *colp = col;
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return (0);
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}
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/*
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* ex_printf --
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* Ex's version of printf.
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*
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* PUBLIC: int ex_printf(SCR *, const char *, ...);
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*/
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int
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ex_printf(
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SCR *sp,
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const char *fmt,
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...)
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{
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EX_PRIVATE *exp;
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va_list ap;
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size_t n;
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exp = EXP(sp);
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va_start(ap, fmt);
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exp->obp_len += n = vsnprintf(exp->obp + exp->obp_len,
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sizeof(exp->obp) - exp->obp_len, fmt, ap);
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va_end(ap);
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/* Flush when reach a <newline> or half the buffer. */
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if (exp->obp[exp->obp_len - 1] == '\n' ||
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exp->obp_len > sizeof(exp->obp) / 2)
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(void)ex_fflush(sp);
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return (n);
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}
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/*
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* ex_puts --
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* Ex's version of puts.
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*
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* PUBLIC: int ex_puts(SCR *, const char *);
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*/
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int
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ex_puts(SCR *sp, const char *str)
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{
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EX_PRIVATE *exp;
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int doflush, n;
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exp = EXP(sp);
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/* Flush when reach a <newline> or the end of the buffer. */
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for (doflush = n = 0; *str != '\0'; ++n) {
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if (exp->obp_len > sizeof(exp->obp))
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(void)ex_fflush(sp);
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if ((exp->obp[exp->obp_len++] = *str++) == '\n')
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doflush = 1;
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}
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if (doflush)
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(void)ex_fflush(sp);
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return (n);
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}
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/*
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* ex_fflush --
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* Ex's version of fflush.
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*
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* PUBLIC: int ex_fflush(SCR *sp);
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*/
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int
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ex_fflush(SCR *sp)
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{
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EX_PRIVATE *exp;
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exp = EXP(sp);
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if (exp->obp_len != 0) {
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sp->gp->scr_msg(sp, M_NONE, exp->obp, exp->obp_len);
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exp->obp_len = 0;
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}
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return (0);
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}
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