home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
rtsi.com
/
2014.01.www.rtsi.com.tar
/
www.rtsi.com
/
OS9
/
OSK
/
CMDS
/
less_332.lzh
/
less_332
/
optfunc.c
< prev
next >
Wrap
C/C++ Source or Header
|
1998-03-03
|
9KB
|
533 lines
/*
* Copyright (c) 1984,1985,1989,1994,1995,1996 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.
*/
/*
* Handling functions for command line options.
*
* Most options are handled by the generic code in option.c.
* But all string options, and a few non-string options, require
* special handling specific to the particular option.
* This special processing is done by the "handling functions" in this file.
*
* Each handling function is passed a "type" and, if it is a string
* option, the string which should be "assigned" to the option.
* The type may be one of:
* INIT The option is being initialized from the command line.
* TOGGLE The option is being changed from within the program.
* QUERY The setting of the option is merely being queried.
*/
#include "less.h"
#include "option.h"
extern int nbufs;
extern int cbufs;
extern int pr_type;
extern int plusoption;
extern int swindow;
extern int sc_height;
extern int secure;
extern int dohelp;
extern char openquote;
extern char closequote;
extern char *prproto[];
extern char *eqproto;
extern char *hproto;
extern IFILE curr_ifile;
#if LOGFILE
extern char *namelogfile;
extern int force_logfile;
extern int logfile;
#endif
#if TAGS
public char *tagoption = NULL;
extern char *tags;
extern int jump_sline;
#endif
#if MSDOS_COMPILER
extern int nm_fg_color, nm_bg_color;
extern int bo_fg_color, bo_bg_color;
extern int ul_fg_color, ul_bg_color;
extern int so_fg_color, so_bg_color;
extern int bl_fg_color, bl_bg_color;
#endif
#if LOGFILE
/*
* Handler for -o option.
*/
public void
opt_o(type, s)
int type;
char *s;
{
PARG parg;
if (secure)
{
error("log file support is not available", NULL_PARG);
return;
}
switch (type)
{
case INIT:
namelogfile = s;
break;
case TOGGLE:
if (ch_getflags() & CH_CANSEEK)
{
error("Input is not a pipe", NULL_PARG);
return;
}
if (logfile >= 0)
{
error("Log file is already in use", NULL_PARG);
return;
}
s = skipsp(s);
namelogfile = lglob(s);
use_logfile(namelogfile);
sync_logfile();
break;
case QUERY:
if (logfile < 0)
error("No log file", NULL_PARG);
else
{
parg.p_string = unquote_file(namelogfile);
error("Log file \"%s\"", &parg);
free(parg.p_string);
}
break;
}
}
/*
* Handler for -O option.
*/
public void
opt__O(type, s)
int type;
char *s;
{
force_logfile = TRUE;
opt_o(type, s);
}
#endif
/*
* Handlers for -l option.
*/
public void
opt_l(type, s)
int type;
char *s;
{
int err;
int n;
char *t;
switch (type)
{
case INIT:
t = s;
n = getnum(&t, 'l', &err);
if (err || n <= 0)
{
error("Line number is required after -l", NULL_PARG);
return;
}
plusoption = TRUE;
ungetsc(s);
break;
}
}
#if USERFILE
public void
opt_k(type, s)
int type;
char *s;
{
PARG parg;
switch (type)
{
case INIT:
if (lesskey(s))
{
parg.p_string = unquote_file(s);
error("Cannot use lesskey file \"%s\"", &parg);
free(parg.p_string);
}
break;
}
}
#endif
#if TAGS
/*
* Handler for -t option.
*/
public void
opt_t(type, s)
int type;
char *s;
{
IFILE save_ifile;
POSITION pos;
switch (type)
{
case INIT:
tagoption = s;
/* Do the rest in main() */
break;
case TOGGLE:
if (secure)
{
error("tags support is not available", NULL_PARG);
break;
}
findtag(skipsp(s));
save_ifile = save_curr_ifile();
if (edit_tagfile())
break;
if ((pos = tagsearch()) == NULL_POSITION)
{
reedit_ifile(save_ifile);
break;
}
unsave_ifile(save_ifile);
jump_loc(pos, jump_sline);
break;
}
}
/*
* Handler for -T option.
*/
public void
opt__T(type, s)
int type;
char *s;
{
PARG parg;
switch (type)
{
case INIT:
tags = s;
break;
case TOGGLE:
s = skipsp(s);
tags = lglob(s);
break;
case QUERY:
parg.p_string = unquote_file(tags);
error("Tags file \"%s\"", &parg);
free(parg.p_string);
break;
}
}
#endif
/*
* Handler for -p option.
*/
public void
opt_p(type, s)
int type;
register char *s;
{
switch (type)
{
case INIT:
/*
* Unget a search command for the specified string.
* {{ This won't work if the "/" command is
* changed or invalidated by a .lesskey file. }}
*/
plusoption = TRUE;
ungetsc(s);
ungetsc("/");
break;
}
}
/*
* Handler for -P option.
*/
public void
opt__P(type, s)
int type;
register char *s;
{
register char **proto;
PARG parg;
switch (type)
{
case INIT:
case TOGGLE:
/*
* Figure out which prototype string should be changed.
*/
switch (*s)
{
case 's': proto = &prproto[PR_SHORT]; s++; break;
case 'm': proto = &prproto[PR_MEDIUM]; s++; break;
case 'M': proto = &prproto[PR_LONG]; s++; break;
case '=': proto = &eqproto; s++; break;
case 'h': proto = &hproto; s++; break;
default: proto = &prproto[PR_SHORT]; break;
}
free(*proto);
*proto = save(s);
break;
case QUERY:
parg.p_string = prproto[pr_type];
error("%s", &parg);
break;
}
}
/*
* Handler for the -b option.
*/
/*ARGSUSED*/
public void
opt_b(type, s)
int type;
char *s;
{
switch (type)
{
case TOGGLE:
case QUERY:
/*
* Allocate the new number of buffers.
*/
cbufs = ch_nbuf(cbufs);
break;
case INIT:
break;
}
}
/*
* Handler for the -i option.
*/
/*ARGSUSED*/
public void
opt_i(type, s)
int type;
char *s;
{
switch (type)
{
case TOGGLE:
chg_caseless();
break;
case QUERY:
case INIT:
break;
}
}
/*
* Handler for the -V option.
*/
/*ARGSUSED*/
public void
opt__V(type, s)
int type;
char *s;
{
switch (type)
{
case TOGGLE:
case QUERY:
case INIT:
dispversion();
if (type == INIT)
quit(QUIT_OK);
break;
}
}
#if MSDOS_COMPILER
/*
*
*/
static void
colordesc(s, fg_color, bg_color)
char *s;
int *fg_color;
int *bg_color;
{
int fg, bg;
int err;
fg = getnum(&s, 'D', &err);
if (err)
{
error("Missing fg color in -D", NULL_PARG);
return;
}
if (*s != '.')
bg = 0;
else
{
s++;
bg = getnum(&s, 'D', &err);
if (err)
{
error("Missing fg color in -D", NULL_PARG);
return;
}
}
*fg_color = fg;
*bg_color = bg;
}
/*
* Handler for the -D option.
*/
/*ARGSUSED*/
public void
opt_D(type, s)
int type;
char *s;
{
switch (type)
{
case INIT:
case TOGGLE:
switch (*s++)
{
case 'n':
colordesc(s, &nm_fg_color, &nm_bg_color);
break;
case 'd':
colordesc(s, &bo_fg_color, &bo_bg_color);
break;
case 'u':
colordesc(s, &ul_fg_color, &ul_bg_color);
break;
case 'k':
colordesc(s, &bl_fg_color, &bl_bg_color);
break;
case 's':
colordesc(s, &so_fg_color, &so_bg_color);
break;
default:
error("-D must be followed by n, d, u, k or s", NULL_PARG);
break;
}
if (type == TOGGLE)
{
so_enter();
so_exit();
}
break;
case QUERY:
break;
}
}
#endif
/*
* Handler for the -" option.
*/
public void
opt_quote(type, s)
int type;
register char *s;
{
char buf[3];
PARG parg;
switch (type)
{
case INIT:
case TOGGLE:
if (s[1] != '\0' && s[2] != '\0')
{
error("-\" must be followed by 1 or 2 chars", NULL_PARG);
return;
}
openquote = s[0];
if (s[1] == '\0')
closequote = openquote;
else
closequote = s[1];
break;
case QUERY:
buf[0] = openquote;
buf[1] = closequote;
buf[2] = '\0';
parg.p_string = buf;
error("quotes %s", &parg);
break;
}
}
/*
* "-?" means display a help message.
* If from the command line, exit immediately.
*/
/*ARGSUSED*/
public void
opt_query(type, s)
int type;
char *s;
{
switch (type)
{
case QUERY:
case TOGGLE:
error("Use \"h\" for help", NULL_PARG);
break;
case INIT:
dohelp = 1;
}
}
/*
* Get the "screen window" size.
*/
public int
get_swindow()
{
if (swindow > 0)
return (swindow);
return (sc_height + swindow);
}