diff options
Diffstat (limited to 'usr.bin/vi/nvi/v_ch.c')
| -rw-r--r-- | usr.bin/vi/nvi/v_ch.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/usr.bin/vi/nvi/v_ch.c b/usr.bin/vi/nvi/v_ch.c new file mode 100644 index 000000000000..40807d1db6b1 --- /dev/null +++ b/usr.bin/vi/nvi/v_ch.c @@ -0,0 +1,273 @@ +/*- + * 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[] = "@(#)v_ch.c 8.2 (Berkeley) 12/20/93"; +#endif /* not lint */ + +#include <sys/types.h> + +#include <stdlib.h> + +#include "vi.h" +#include "vcmd.h" + +#define NOPREV { \ + msgq(sp, M_BERR, "No previous F, f, T or t search."); \ + return (1); \ +} + +#define NOTFOUND(ch) { \ + msgq(sp, M_BERR, "%s not found.", charname(sp, ch)); \ + return (1); \ +} + +/* + * v_chrepeat -- [count]; + * Repeat the last F, f, T or t search. + */ +int +v_chrepeat(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + vp->character = sp->lastckey; + + switch (sp->csearchdir) { + case CNOTSET: + NOPREV; + case FSEARCH: + return (v_chF(sp, ep, vp, fm, tm, rp)); + case fSEARCH: + return (v_chf(sp, ep, vp, fm, tm, rp)); + case TSEARCH: + return (v_chT(sp, ep, vp, fm, tm, rp)); + case tSEARCH: + return (v_cht(sp, ep, vp, fm, tm, rp)); + default: + abort(); + } + /* NOTREACHED */ +} + +/* + * v_chrrepeat -- [count], + * Repeat the last F, f, T or t search in the reverse direction. + */ +int +v_chrrepeat(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + int rval; + enum cdirection savedir; + + vp->character = sp->lastckey; + savedir = sp->csearchdir; + + switch (sp->csearchdir) { + case CNOTSET: + NOPREV; + case FSEARCH: + rval = v_chf(sp, ep, vp, fm, tm, rp); + break; + case fSEARCH: + rval = v_chF(sp, ep, vp, fm, tm, rp); + break; + case TSEARCH: + rval = v_cht(sp, ep, vp, fm, tm, rp); + break; + case tSEARCH: + rval = v_chT(sp, ep, vp, fm, tm, rp); + break; + default: + abort(); + } + sp->csearchdir = savedir; + return (rval); +} + +/* + * v_cht -- [count]tc + * Search forward in the line for the next occurrence of the character. + * Place the cursor on it if a motion command, to its left if its not. + */ +int +v_cht(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + int rval; + + rval = v_chf(sp, ep, vp, fm, tm, rp); + if (!rval) + --rp->cno; /* XXX: Motion interaction with v_chf. */ + sp->csearchdir = tSEARCH; + return (rval); +} + +/* + * v_chf -- [count]fc + * Search forward in the line for the next occurrence of the character. + * Place the cursor to its right if a motion command, on it if its not. + */ +int +v_chf(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + size_t len; + recno_t lno; + u_long cnt; + int key; + char *endp, *p, *startp; + + /* + * !!! + * If it's a dot command, it doesn't reset the key for which + * we're searching, e.g. in "df1|f2|.|;", the ';' searches + * for a '2'. + */ + key = vp->character; + if (!F_ISSET(vp, VC_ISDOT)) + sp->lastckey = key; + sp->csearchdir = fSEARCH; + + if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL) { + if (file_lline(sp, ep, &lno)) + return (1); + if (lno == 0) + NOTFOUND(key); + GETLINE_ERR(sp, fm->lno); + return (1); + } + + if (len == 0) + NOTFOUND(key); + + startp = p; + endp = p + len; + p += fm->cno; + for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) { + while (++p < endp && *p != key); + if (p == endp) + NOTFOUND(key); + } + rp->lno = fm->lno; + rp->cno = p - startp; + if (F_ISSET(vp, VC_C | VC_D | VC_Y)) + ++rp->cno; + return (0); +} + +/* + * v_chT -- [count]Tc + * Search backward in the line for the next occurrence of the character. + * Place the cursor to its right. + */ +int +v_chT(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + int rval; + + rval = v_chF(sp, ep, vp, fm, tm, rp); + if (!rval) + ++rp->cno; + sp->csearchdir = TSEARCH; + return (0); +} + +/* + * v_chF -- [count]Fc + * Search backward in the line for the next occurrence of the character. + * Place the cursor on it. + */ +int +v_chF(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + recno_t lno; + size_t len; + u_long cnt; + int key; + char *p, *endp; + + /* + * !!! + * If it's a dot command, it doesn't reset the key for which + * we're searching, e.g. in "df1|f2|.|;", the ';' searches + * for a '2'. + */ + key = vp->character; + if (!F_ISSET(vp, VC_ISDOT)) + sp->lastckey = key; + sp->csearchdir = FSEARCH; + + if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL) { + if (file_lline(sp, ep, &lno)) + return (1); + if (lno == 0) + NOTFOUND(key); + GETLINE_ERR(sp, fm->lno); + return (1); + } + + if (len == 0) + NOTFOUND(key); + + endp = p - 1; + p += fm->cno; + for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) { + while (--p > endp && *p != key); + if (p == endp) + NOTFOUND(key); + } + rp->lno = fm->lno; + rp->cno = (p - endp) - 1; + return (0); +} |