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Diffstat (limited to 'contrib/nvi/ex/ex_print.c')
| -rw-r--r-- | contrib/nvi/ex/ex_print.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex_print.c b/contrib/nvi/ex/ex_print.c new file mode 100644 index 000000000000..4218e08e0978 --- /dev/null +++ b/contrib/nvi/ex/ex_print.c @@ -0,0 +1,352 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + */ + +#include "config.h" + +#ifndef lint +static const char sccsid[] = "@(#)ex_print.c 10.18 (Berkeley) 5/12/96"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/queue.h> + +#include <bitstring.h> +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> + +#ifdef __STDC__ +#include <stdarg.h> +#else +#include <varargs.h> +#endif + +#include "../common/common.h" + +static int ex_prchars __P((SCR *, const char *, size_t *, size_t, u_int, int)); + +/* + * ex_list -- :[line [,line]] l[ist] [count] [flags] + * + * Display the addressed lines such that the output is unambiguous. + * + * PUBLIC: int ex_list __P((SCR *, EXCMD *)); + */ +int +ex_list(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + if (ex_print(sp, cmdp, + &cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_LIST)) + return (1); + sp->lno = cmdp->addr2.lno; + sp->cno = cmdp->addr2.cno; + return (0); +} + +/* + * ex_number -- :[line [,line]] nu[mber] [count] [flags] + * + * Display the addressed lines with a leading line number. + * + * PUBLIC: int ex_number __P((SCR *, EXCMD *)); + */ +int +ex_number(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + if (ex_print(sp, cmdp, + &cmdp->addr1, &cmdp->addr2, cmdp->iflags | E_C_HASH)) + return (1); + sp->lno = cmdp->addr2.lno; + sp->cno = cmdp->addr2.cno; + return (0); +} + +/* + * ex_pr -- :[line [,line]] p[rint] [count] [flags] + * + * Display the addressed lines. + * + * PUBLIC: int ex_pr __P((SCR *, EXCMD *)); + */ +int +ex_pr(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + if (ex_print(sp, cmdp, &cmdp->addr1, &cmdp->addr2, cmdp->iflags)) + return (1); + sp->lno = cmdp->addr2.lno; + sp->cno = cmdp->addr2.cno; + return (0); +} + +/* + * ex_print -- + * Print the selected lines. + * + * PUBLIC: int ex_print __P((SCR *, EXCMD *, MARK *, MARK *, u_int32_t)); + */ +int +ex_print(sp, cmdp, fp, tp, flags) + SCR *sp; + EXCMD *cmdp; + MARK *fp, *tp; + u_int32_t flags; +{ + GS *gp; + recno_t from, to; + size_t col, len; + char *p, buf[10]; + + NEEDFILE(sp, cmdp); + + gp = sp->gp; + for (from = fp->lno, to = tp->lno; from <= to; ++from) { + col = 0; + + /* + * Display the line number. The %6 format is specified + * by POSIX 1003.2, and is almost certainly large enough. + * Check, though, just in case. + */ + if (LF_ISSET(E_C_HASH)) { + if (from <= 999999) { + snprintf(buf, sizeof(buf), "%6ld ", from); + p = buf; + } else + p = "TOOBIG "; + if (ex_prchars(sp, p, &col, 8, 0, 0)) + return (1); + } + + /* + * Display the line. The format for E_C_PRINT isn't very good, + * especially in handling end-of-line tabs, but they're almost + * backward compatible. + */ + if (db_get(sp, from, DBG_FATAL, &p, &len)) + return (1); + + if (len == 0 && !LF_ISSET(E_C_LIST)) + (void)ex_puts(sp, "\n"); + else if (ex_ldisplay(sp, p, len, col, flags)) + return (1); + + if (INTERRUPTED(sp)) + break; + } + return (0); +} + +/* + * ex_ldisplay -- + * Display a line without any preceding number. + * + * PUBLIC: int ex_ldisplay __P((SCR *, const char *, size_t, size_t, u_int)); + */ +int +ex_ldisplay(sp, p, len, col, flags) + SCR *sp; + const char *p; + size_t len, col; + u_int flags; +{ + if (len > 0 && ex_prchars(sp, p, &col, len, LF_ISSET(E_C_LIST), 0)) + return (1); + if (!INTERRUPTED(sp) && LF_ISSET(E_C_LIST)) { + p = "$"; + if (ex_prchars(sp, p, &col, 1, LF_ISSET(E_C_LIST), 0)) + return (1); + } + if (!INTERRUPTED(sp)) + (void)ex_puts(sp, "\n"); + return (0); +} + +/* + * ex_scprint -- + * Display a line for the substitute with confirmation routine. + * + * PUBLIC: int ex_scprint __P((SCR *, MARK *, MARK *)); + */ +int +ex_scprint(sp, fp, tp) + SCR *sp; + MARK *fp, *tp; +{ + const char *p; + size_t col, len; + + col = 0; + if (O_ISSET(sp, O_NUMBER)) { + p = " "; + if (ex_prchars(sp, p, &col, 8, 0, 0)) + return (1); + } + + if (db_get(sp, fp->lno, DBG_FATAL, (char **)&p, &len)) + return (1); + + if (ex_prchars(sp, p, &col, fp->cno, 0, ' ')) + return (1); + p += fp->cno; + if (ex_prchars(sp, + p, &col, tp->cno == fp->cno ? 1 : tp->cno - fp->cno, 0, '^')) + return (1); + if (INTERRUPTED(sp)) + return (1); + p = "[ynq]"; /* XXX: should be msg_cat. */ + if (ex_prchars(sp, p, &col, 5, 0, 0)) + return (1); + (void)ex_fflush(sp); + return (0); +} + +/* + * ex_prchars -- + * Local routine to dump characters to the screen. + */ +static int +ex_prchars(sp, p, colp, len, flags, repeatc) + SCR *sp; + const char *p; + size_t *colp, len; + u_int flags; + int repeatc; +{ + CHAR_T ch, *kp; + GS *gp; + size_t col, tlen, ts; + + if (O_ISSET(sp, O_LIST)) + LF_SET(E_C_LIST); + gp = sp->gp; + ts = O_VAL(sp, O_TABSTOP); + for (col = *colp; len--;) + if ((ch = *p++) == '\t' && !LF_ISSET(E_C_LIST)) + for (tlen = ts - col % ts; + col < sp->cols && tlen--; ++col) { + (void)ex_printf(sp, + "%c", repeatc ? repeatc : ' '); + if (INTERRUPTED(sp)) + goto intr; + } + else { + kp = KEY_NAME(sp, ch); + tlen = KEY_LEN(sp, ch); + if (!repeatc && col + tlen < sp->cols) { + (void)ex_puts(sp, kp); + col += tlen; + } else + for (; tlen--; ++kp, ++col) { + if (col == sp->cols) { + col = 0; + (void)ex_puts(sp, "\n"); + } + (void)ex_printf(sp, + "%c", repeatc ? repeatc : *kp); + if (INTERRUPTED(sp)) + goto intr; + } + } +intr: *colp = col; + return (0); +} + +/* + * ex_printf -- + * Ex's version of printf. + * + * PUBLIC: int ex_printf __P((SCR *, const char *, ...)); + */ +int +#ifdef __STDC__ +ex_printf(SCR *sp, const char *fmt, ...) +#else +ex_printf(sp, fmt, va_alist) + SCR *sp; + const char *fmt; + va_dcl +#endif +{ + EX_PRIVATE *exp; + va_list ap; + size_t n; + + exp = EXP(sp); + +#ifdef __STDC__ + va_start(ap, fmt); +#else + va_start(ap); +#endif + exp->obp_len += n = vsnprintf(exp->obp + exp->obp_len, + sizeof(exp->obp) - exp->obp_len, fmt, ap); + va_end(ap); + + /* Flush when reach a <newline> or half the buffer. */ + if (exp->obp[exp->obp_len - 1] == '\n' || + exp->obp_len > sizeof(exp->obp) / 2) + (void)ex_fflush(sp); + return (n); +} + +/* + * ex_puts -- + * Ex's version of puts. + * + * PUBLIC: int ex_puts __P((SCR *, const char *)); + */ +int +ex_puts(sp, str) + SCR *sp; + const char *str; +{ + EX_PRIVATE *exp; + int doflush, n; + + exp = EXP(sp); + + /* Flush when reach a <newline> or the end of the buffer. */ + for (doflush = n = 0; *str != '\0'; ++n) { + if (exp->obp_len > sizeof(exp->obp)) + (void)ex_fflush(sp); + if ((exp->obp[exp->obp_len++] = *str++) == '\n') + doflush = 1; + } + if (doflush) + (void)ex_fflush(sp); + return (n); +} + +/* + * ex_fflush -- + * Ex's version of fflush. + * + * PUBLIC: int ex_fflush __P((SCR *sp)); + */ +int +ex_fflush(sp) + SCR *sp; +{ + EX_PRIVATE *exp; + + exp = EXP(sp); + + if (exp->obp_len != 0) { + sp->gp->scr_msg(sp, M_NONE, exp->obp, exp->obp_len); + exp->obp_len = 0; + } + return (0); +} |