2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid[] = "$Id: ex_print.c,v 10.26 2013/11/02 02:11:07 zy Exp $";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
27 #include "../common/common.h"
29 static int ex_prchars __P((SCR *, const CHAR_T *, size_t *, size_t,
33 * ex_list -- :[line [,line]] l[ist] [count] [flags]
35 * Display the addressed lines such that the output is unambiguous.
37 * PUBLIC: int ex_list __P((SCR *, EXCMD *));
40 ex_list(SCR *sp, EXCMD *cmdp)
42 if (ex_print(sp, cmdp,
43 &cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_LIST))
45 sp->lno = cmdp->addr2.lno;
46 sp->cno = cmdp->addr2.cno;
51 * ex_number -- :[line [,line]] nu[mber] [count] [flags]
53 * Display the addressed lines with a leading line number.
55 * PUBLIC: int ex_number __P((SCR *, EXCMD *));
58 ex_number(SCR *sp, EXCMD *cmdp)
60 if (ex_print(sp, cmdp,
61 &cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_HASH))
63 sp->lno = cmdp->addr2.lno;
64 sp->cno = cmdp->addr2.cno;
69 * ex_pr -- :[line [,line]] p[rint] [count] [flags]
71 * Display the addressed lines.
73 * PUBLIC: int ex_pr __P((SCR *, EXCMD *));
76 ex_pr(SCR *sp, EXCMD *cmdp)
78 if (ex_print(sp, cmdp, &cmdp->addr1, &cmdp->addr2, cmdp->iflags))
80 sp->lno = cmdp->addr2.lno;
81 sp->cno = cmdp->addr2.cno;
87 * Print the selected lines.
89 * PUBLIC: int ex_print __P((SCR *, EXCMD *, MARK *, MARK *, u_int32_t));
92 ex_print(SCR *sp, EXCMD *cmdp, MARK *fp, MARK *tp, u_int32_t flags)
103 for (from = fp->lno, to = tp->lno; from <= to; ++from) {
107 * Display the line number. The %6 format is specified
108 * by POSIX 1003.2, and is almost certainly large enough.
109 * Check, though, just in case.
111 if (LF_ISSET(E_C_HASH)) {
112 if (from <= 999999) {
113 SPRINTF(buf, SIZE(buf), L("%6u "), from);
117 if (ex_prchars(sp, p, &col, 8, 0, 0))
122 * Display the line. The format for E_C_PRINT isn't very good,
123 * especially in handling end-of-line tabs, but they're almost
124 * backward compatible.
126 if (db_get(sp, from, DBG_FATAL, &p, &len))
129 if (len == 0 && !LF_ISSET(E_C_LIST))
130 (void)ex_puts(sp, "\n");
131 else if (ex_ldisplay(sp, p, len, col, flags))
142 * Display a line without any preceding number.
144 * PUBLIC: int ex_ldisplay __P((SCR *, const CHAR_T *, size_t, size_t, u_int));
147 ex_ldisplay(SCR *sp, const CHAR_T *p, size_t len, size_t col, u_int flags)
149 if (len > 0 && ex_prchars(sp, p, &col, len, LF_ISSET(E_C_LIST), 0))
151 if (!INTERRUPTED(sp) && LF_ISSET(E_C_LIST)) {
153 if (ex_prchars(sp, p, &col, 1, LF_ISSET(E_C_LIST), 0))
156 if (!INTERRUPTED(sp))
157 (void)ex_puts(sp, "\n");
163 * Display a line for the substitute with confirmation routine.
165 * PUBLIC: int ex_scprint __P((SCR *, MARK *, MARK *));
168 ex_scprint(SCR *sp, MARK *fp, MARK *tp)
174 if (O_ISSET(sp, O_NUMBER)) {
176 if (ex_prchars(sp, p, &col, 8, 0, 0))
180 if (db_get(sp, fp->lno, DBG_FATAL, &p, &len))
183 if (ex_prchars(sp, p, &col, fp->cno, 0, ' '))
187 p, &col, tp->cno == fp->cno ? 1 : tp->cno - fp->cno, 0, '^'))
191 p = L("[ynq]"); /* XXX: should be msg_cat. */
192 if (ex_prchars(sp, p, &col, 5, 0, 0))
200 * Local routine to dump characters to the screen.
203 ex_prchars(SCR *sp, const CHAR_T *p, size_t *colp, size_t len,
204 u_int flags, int repeatc)
209 size_t col, tlen, ts;
211 if (O_ISSET(sp, O_LIST))
214 ts = O_VAL(sp, O_TABSTOP);
215 for (col = *colp; len--;)
216 if ((ch = *p++) == L('\t') && !LF_ISSET(E_C_LIST))
217 for (tlen = ts - col % ts;
218 col < sp->cols && tlen--; ++col) {
220 "%c", repeatc ? repeatc : ' ');
225 kp = KEY_NAME(sp, ch);
226 tlen = KEY_COL(sp, ch);
229 * Start a new line if the last character does not fit
230 * into the current line. The implicit new lines are
233 if (col + tlen > sp->cols) {
235 (void)ex_puts(sp, "\n");
240 (void)ex_puts(sp, kp);
243 } else while (tlen--) {
244 (void)ex_printf(sp, "%c", repeatc);
248 if (col == sp->cols) {
250 (void)ex_puts(sp, "\n");
259 * Ex's version of printf.
261 * PUBLIC: int ex_printf __P((SCR *, const char *, ...));
276 exp->obp_len += n = vsnprintf(exp->obp + exp->obp_len,
277 sizeof(exp->obp) - exp->obp_len, fmt, ap);
280 /* Flush when reach a <newline> or half the buffer. */
281 if (exp->obp[exp->obp_len - 1] == '\n' ||
282 exp->obp_len > sizeof(exp->obp) / 2)
289 * Ex's version of puts.
291 * PUBLIC: int ex_puts __P((SCR *, const char *));
294 ex_puts(SCR *sp, const char *str)
301 /* Flush when reach a <newline> or the end of the buffer. */
302 for (doflush = n = 0; *str != '\0'; ++n) {
303 if (exp->obp_len > sizeof(exp->obp))
305 if ((exp->obp[exp->obp_len++] = *str++) == '\n')
315 * Ex's version of fflush.
317 * PUBLIC: int ex_fflush __P((SCR *sp));
326 if (exp->obp_len != 0) {
327 sp->gp->scr_msg(sp, M_NONE, exp->obp, exp->obp_len);