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/*
* Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman
* 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 in the documentation and/or other materials provided with
* the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* The option table.
*/
#include "less.h"
#include "option.h"
/*
* Variables controlled by command line options.
*/
public int quiet; /* Should we suppress the audible bell? */
public int how_search; /* Where should forward searches start? */
public int top_scroll; /* Repaint screen from top?
(alternative is scroll from bottom) */
public int pr_type; /* Type of prompt (short, medium, long) */
public int bs_mode; /* How to process backspaces */
public int know_dumb; /* Don't complain about dumb terminals */
public int quit_at_eof; /* Quit after hitting end of file twice */
public int be_helpful; /* more(1) style -d */
public int squeeze; /* Squeeze multiple blank lines into one */
public int tabstop; /* Tab settings */
public int back_scroll; /* Repaint screen on backwards movement */
public int forw_scroll; /* Repaint screen on forward movement */
public int twiddle; /* Display "~" for lines after EOF */
public int caseless; /* Do "caseless" searches */
public int linenums; /* Use line numbers */
public int cbufs; /* Current number of buffers */
public int autobuf; /* Automatically allocate buffers as needed */
public int nohelp; /* Disable the HELP command */
public int ctldisp; /* Send control chars to screen untranslated */
public int force_open; /* Open the file even if not regular file */
public int swindow; /* Size of scrolling window */
public int jump_sline; /* Screen line of "jump target" */
public int chopline; /* Truncate displayed lines at screen width */
public int no_init; /* Disable sending ti/te termcap strings */
#if HILITE_SEARCH
public int hilite_search; /* Highlight matched search patterns? */
#endif
/*
* Table of all options and their semantics.
*/
static struct option option[] =
{
{ 'a', BOOL, OPT_OFF, &how_search, NULL,
"Search includes displayed screen",
"Search skips displayed screen",
NULL
},
{ 'b', NUMBER, 10, &cbufs, opt_b,
"Buffers: ",
"%d buffers",
NULL
},
{ 'B', BOOL, OPT_ON, &autobuf, NULL,
"Don't automatically allocate buffers",
"Automatically allocate buffers when needed",
NULL
},
{ 'c', TRIPLE, OPT_OFF, &top_scroll, NULL,
"Repaint by scrolling from bottom of screen",
"Repaint by clearing each line",
"Repaint by painting from top of screen"
},
#if 0
{ 'd', BOOL|NO_TOGGLE, OPT_OFF, &know_dumb, NULL,
"Assume intelligent terminal",
"Assume dumb terminal",
NULL
},
#else
{ 'd', BOOL, OPT_OFF, &be_helpful, NULL,
"Be helpful in prompts",
"Be less helpful in prompts",
NULL,
},
#endif
#if MSOFTC
{ 'D', STRING|REPAINT, 0, NULL, opt_D,
"color desc: ", NULL, NULL
},
#endif
{ 'e', TRIPLE, OPT_OFF, &quit_at_eof, NULL,
"Don't quit at end-of-file",
"Quit at end-of-file",
"Quit immediately at end-of-file"
},
{ 'f', BOOL, OPT_OFF, &force_open, NULL,
"Open only regular files",
"Open even non-regular files",
NULL
},
#if HILITE_SEARCH
{ 'g', TRIPLE|HL_REPAINT, OPT_ONPLUS, &hilite_search, NULL,
"Don't highlight search matches",
"Highlight matches for previous search only",
"Highlight all matches for previous search pattern",
},
#endif
{ 'h', NUMBER, -1, &back_scroll, NULL,
"Backwards scroll limit: ",
"Backwards scroll limit is %d lines",
NULL
},
{ 'H', BOOL|NO_TOGGLE, OPT_OFF, &nohelp, NULL,
"Allow help command",
"Don't allow help command",
NULL
},
{ 'i', TRIPLE|HL_REPAINT, OPT_OFF, &caseless, opt_i,
"Case is significant in searches",
"Ignore case in searches",
"Ignore case in searches and in patterns"
},
{ 'j', NUMBER, 1, &jump_sline, NULL,
"Target line: ",
"Position target at screen line %d",
NULL
},
#if USERFILE
{ 'k', STRING|NO_TOGGLE|NO_QUERY, 0, NULL, opt_k,
NULL, NULL, NULL
},
#endif
{ 'l', STRING|NO_TOGGLE|NO_QUERY, 0, NULL, opt_l,
NULL, NULL, NULL
},
{ 'm', TRIPLE, OPT_OFF, &pr_type, NULL,
"Short prompt",
"Medium prompt",
"Long prompt"
},
{ 'n', TRIPLE|REPAINT, OPT_ON, &linenums, NULL,
"Don't use line numbers",
"Use line numbers",
"Constantly display line numbers"
},
#if LOGFILE
{ 'o', STRING, 0, NULL, opt_o,
"log file: ", NULL, NULL
},
{ 'O', STRING, 0, NULL, opt__O,
"Log file: ", NULL, NULL
},
#endif
{ 'p', STRING|NO_TOGGLE|NO_QUERY, 0, NULL, opt_p,
NULL, NULL, NULL
},
{ 'P', STRING, 0, NULL, opt__P,
"prompt: ", NULL, NULL
},
{ 'q', TRIPLE, OPT_OFF, &quiet, NULL,
"Ring the bell for errors AND at eof/bof",
"Ring the bell for errors but not at eof/bof",
"Never ring the bell"
},
{ 'r', BOOL|REPAINT, OPT_ON, &ctldisp, NULL,
"Display control characters directly",
"Display control characters as ^X",
NULL
},
{ 's', BOOL|REPAINT, OPT_OFF, &squeeze, NULL,
"Display all blank lines",
"Squeeze multiple blank lines",
NULL
},
{ 'S', BOOL|REPAINT, OPT_OFF, &chopline, NULL,
"Fold long lines",
"Chop long lines",
NULL
},
#if TAGS
{ 't', STRING|NO_QUERY, 0, NULL, opt_t,
"tag: ", NULL, NULL
},
{ 'T', STRING, 0, NULL, opt__T,
"tags file: ", NULL, NULL
},
#endif
{ 'u', TRIPLE|REPAINT, OPT_OFF, &bs_mode, NULL,
"Display underlined text in underline mode",
"Backspaces cause overstrike",
"Print backspace as ^H"
},
{ 'V', NOVAR, 0, NULL, opt__V,
NULL, NULL, NULL
},
{ 'w', BOOL|REPAINT, OPT_ON, &twiddle, NULL,
"Display nothing for lines after end-of-file",
"Display ~ for lines after end-of-file",
NULL
},
{ 'x', NUMBER|REPAINT, 8, &tabstop, NULL,
"Tab stops: ",
"Tab stops every %d spaces",
NULL
},
{ 'X', BOOL|NO_TOGGLE, OPT_OFF, &no_init, NULL,
"Send init/deinit strings to terminal",
"Don't use init/deinit strings",
NULL
},
{ 'y', NUMBER, -1, &forw_scroll, NULL,
"Forward scroll limit: ",
"Forward scroll limit is %d lines",
NULL
},
{ 'z', NUMBER, -1, &swindow, NULL,
"Scroll window size: ",
"Scroll window size is %d lines",
NULL
},
{ '?', NOVAR, 0, NULL, opt_query,
NULL, NULL, NULL
},
{ '\0' }
};
/*
* Initialize each option to its default value.
*/
public void
init_option()
{
register struct option *o;
for (o = option; o->oletter != '\0'; o++)
{
/*
* Set each variable to its default.
*/
if (o->ovar != NULL)
*(o->ovar) = o->odefault;
}
}
/*
* Find an option in the option table.
*/
public struct option *
findopt(c)
int c;
{
register struct option *o;
for (o = option; o->oletter != '\0'; o++)
{
if (o->oletter == c)
return (o);
if ((o->otype & TRIPLE) && toupper(o->oletter) == c)
return (o);
}
return (NULL);
}
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