version 1.1.1.1, 1996/09/21 05:39:42 |
version 1.1.1.2, 2003/04/13 18:21:21 |
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/* |
/* |
* Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman |
* Copyright (C) 1984-2002 Mark Nudelman |
* All rights reserved. |
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* |
* |
* Redistribution and use in source and binary forms, with or without |
* You may distribute under the terms of either the GNU General Public |
* modification, are permitted provided that the following conditions |
* License or the Less License, as specified in the README file. |
* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice in the documentation and/or other materials provided with |
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* the distribution. |
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* |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY |
* For more information about less, or for information on how to |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* contact the author, see the README file. |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
*/ |
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#include "less.h" |
#include "less.h" |
#include "position.h" |
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extern IFILE curr_ifile; |
extern IFILE curr_ifile; |
extern int sc_height; |
extern int sc_height; |
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/* |
/* |
* The table of marks. |
* The table of marks. |
* Each mark is identified by a lowercase or uppercase letter. |
* Each mark is identified by a lowercase or uppercase letter. |
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* The final one is lmark, for the "last mark"; addressed by the apostrophe. |
*/ |
*/ |
#define NMARKS (2*26) /* a-z, A-Z */ |
#define NMARKS ((2*26)+1) /* a-z, A-Z, lastmark */ |
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#define LASTMARK (NMARKS-1) |
static struct mark marks[NMARKS]; |
static struct mark marks[NMARKS]; |
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/* |
/* |
* Special mark for the "last mark"; addressed by the apostrophe. |
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*/ |
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static struct mark lmark; |
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/* |
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* Initialize the mark table to show no marks are set. |
* Initialize the mark table to show no marks are set. |
*/ |
*/ |
public void |
public void |
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for (i = 0; i < NMARKS; i++) |
for (i = 0; i < NMARKS; i++) |
marks[i].m_scrpos.pos = NULL_POSITION; |
marks[i].m_scrpos.pos = NULL_POSITION; |
lmark.m_scrpos.pos = NULL_POSITION; |
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} |
} |
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/* |
/* |
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* Current position in the current file. |
* Current position in the current file. |
*/ |
*/ |
m = &sm; |
m = &sm; |
m->m_scrpos.pos = ch_tell(); |
get_scrpos(&m->m_scrpos); |
m->m_scrpos.ln = 0; |
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m->m_ifile = curr_ifile; |
m->m_ifile = curr_ifile; |
break; |
break; |
case '\'': |
case '\'': |
/* |
/* |
* The "last mark". |
* The "last mark". |
*/ |
*/ |
m = &lmark; |
m = &marks[LASTMARK]; |
break; |
break; |
default: |
default: |
/* |
/* |
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{ |
{ |
struct scrpos scrpos; |
struct scrpos scrpos; |
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if (ch_getflags() & CH_HELPFILE) |
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return; |
get_scrpos(&scrpos); |
get_scrpos(&scrpos); |
if (scrpos.pos == NULL_POSITION) |
if (scrpos.pos == NULL_POSITION) |
return; |
return; |
lmark.m_scrpos = scrpos; |
marks[LASTMARK].m_scrpos = scrpos; |
lmark.m_ifile = curr_ifile; |
marks[LASTMARK].m_ifile = curr_ifile; |
} |
} |
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/* |
/* |
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* it has not been set to anything yet, |
* it has not been set to anything yet, |
* set it to the beginning of the current file. |
* set it to the beginning of the current file. |
*/ |
*/ |
if (m == &lmark && m->m_scrpos.pos == NULL_POSITION) |
if (m == &marks[LASTMARK] && m->m_scrpos.pos == NULL_POSITION) |
{ |
{ |
m->m_ifile = curr_ifile; |
m->m_ifile = curr_ifile; |
m->m_scrpos.pos = ch_zero(); |
m->m_scrpos.pos = ch_zero(); |
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return (NULL_POSITION); |
return (NULL_POSITION); |
} |
} |
return (m->m_scrpos.pos); |
return (m->m_scrpos.pos); |
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} |
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/* |
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* Clear the marks associated with a specified ifile. |
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*/ |
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public void |
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unmark(ifile) |
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IFILE ifile; |
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{ |
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int i; |
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for (i = 0; i < NMARKS; i++) |
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if (marks[i].m_ifile == ifile) |
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marks[i].m_scrpos.pos = NULL_POSITION; |
} |
} |