1151 lines
19 KiB
C
1151 lines
19 KiB
C
/*
|
|
* Copyright (C) 1984-2022 Mark Nudelman
|
|
*
|
|
* You may distribute under the terms of either the GNU General Public
|
|
* License or the Less License, as specified in the README file.
|
|
*
|
|
* For more information, see the README file.
|
|
*/
|
|
|
|
|
|
/*
|
|
* 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 bufspace;
|
|
extern int pr_type;
|
|
extern int plusoption;
|
|
extern int swindow;
|
|
extern int sc_width;
|
|
extern int sc_height;
|
|
extern int secure;
|
|
extern int dohelp;
|
|
extern int is_tty;
|
|
extern char openquote;
|
|
extern char closequote;
|
|
extern char *prproto[];
|
|
extern char *eqproto;
|
|
extern char *hproto;
|
|
extern char *wproto;
|
|
extern char *every_first_cmd;
|
|
extern IFILE curr_ifile;
|
|
extern char version[];
|
|
extern int jump_sline;
|
|
extern long jump_sline_fraction;
|
|
extern int shift_count;
|
|
extern long shift_count_fraction;
|
|
extern char rscroll_char;
|
|
extern int rscroll_attr;
|
|
extern int mousecap;
|
|
extern int wheel_lines;
|
|
extern int less_is_more;
|
|
extern int linenum_width;
|
|
extern int status_col_width;
|
|
extern int use_color;
|
|
extern int want_filesize;
|
|
extern int header_lines;
|
|
extern int header_cols;
|
|
extern int def_search_type;
|
|
extern int chopline;
|
|
#if LOGFILE
|
|
extern char *namelogfile;
|
|
extern int force_logfile;
|
|
extern int logfile;
|
|
#endif
|
|
#if TAGS
|
|
public char *tagoption = NULL;
|
|
extern char *tags;
|
|
extern char ztags[];
|
|
#endif
|
|
#if LESSTEST
|
|
extern char *ttyin_name;
|
|
extern int rstat_file;
|
|
#endif /*LESSTEST*/
|
|
#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;
|
|
extern int sgr_mode;
|
|
#if MSDOS_COMPILER==WIN32C
|
|
#ifndef COMMON_LVB_UNDERSCORE
|
|
#define COMMON_LVB_UNDERSCORE 0x8000
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
|
|
#if LOGFILE
|
|
/*
|
|
* Handler for -o option.
|
|
*/
|
|
public void
|
|
opt_o(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
char *filename;
|
|
|
|
if (secure)
|
|
{
|
|
error("log file support is not available", NULL_PARG);
|
|
return;
|
|
}
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
namelogfile = save(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);
|
|
if (namelogfile != NULL)
|
|
free(namelogfile);
|
|
filename = lglob(s);
|
|
namelogfile = shell_unquote(filename);
|
|
free(filename);
|
|
use_logfile(namelogfile);
|
|
sync_logfile();
|
|
break;
|
|
case QUERY:
|
|
if (logfile < 0)
|
|
error("No log file", NULL_PARG);
|
|
else
|
|
{
|
|
parg.p_string = namelogfile;
|
|
error("Log file \"%s\"", &parg);
|
|
}
|
|
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 -j option.
|
|
*/
|
|
public void
|
|
opt_j(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
int len;
|
|
int err;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (*s == '.')
|
|
{
|
|
s++;
|
|
jump_sline_fraction = getfraction(&s, "j", &err);
|
|
if (err)
|
|
error("Invalid line fraction", NULL_PARG);
|
|
else
|
|
calc_jump_sline();
|
|
} else
|
|
{
|
|
int sline = getnum(&s, "j", &err);
|
|
if (err)
|
|
error("Invalid line number", NULL_PARG);
|
|
else
|
|
{
|
|
jump_sline = sline;
|
|
jump_sline_fraction = -1;
|
|
}
|
|
}
|
|
break;
|
|
case QUERY:
|
|
if (jump_sline_fraction < 0)
|
|
{
|
|
parg.p_int = jump_sline;
|
|
error("Position target at screen line %d", &parg);
|
|
} else
|
|
{
|
|
char buf[24];
|
|
SNPRINTF1(buf, sizeof(buf), ".%06ld", jump_sline_fraction);
|
|
len = (int) strlen(buf);
|
|
while (len > 2 && buf[len-1] == '0')
|
|
len--;
|
|
buf[len] = '\0';
|
|
parg.p_string = buf;
|
|
error("Position target at screen position %s", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
public void
|
|
calc_jump_sline(VOID_PARAM)
|
|
{
|
|
if (jump_sline_fraction < 0)
|
|
return;
|
|
jump_sline = sc_height * jump_sline_fraction / NUM_FRAC_DENOM;
|
|
}
|
|
|
|
/*
|
|
* Handlers for -# option.
|
|
*/
|
|
public void
|
|
opt_shift(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
int len;
|
|
int err;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (*s == '.')
|
|
{
|
|
s++;
|
|
shift_count_fraction = getfraction(&s, "#", &err);
|
|
if (err)
|
|
error("Invalid column fraction", NULL_PARG);
|
|
else
|
|
calc_shift_count();
|
|
} else
|
|
{
|
|
int hs = getnum(&s, "#", &err);
|
|
if (err)
|
|
error("Invalid column number", NULL_PARG);
|
|
else
|
|
{
|
|
shift_count = hs;
|
|
shift_count_fraction = -1;
|
|
}
|
|
}
|
|
break;
|
|
case QUERY:
|
|
if (shift_count_fraction < 0)
|
|
{
|
|
parg.p_int = shift_count;
|
|
error("Horizontal shift %d columns", &parg);
|
|
} else
|
|
{
|
|
char buf[24];
|
|
SNPRINTF1(buf, sizeof(buf), ".%06ld", shift_count_fraction);
|
|
len = (int) strlen(buf);
|
|
while (len > 2 && buf[len-1] == '0')
|
|
len--;
|
|
buf[len] = '\0';
|
|
parg.p_string = buf;
|
|
error("Horizontal shift %s of screen width", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
public void
|
|
calc_shift_count(VOID_PARAM)
|
|
{
|
|
if (shift_count_fraction < 0)
|
|
return;
|
|
shift_count = sc_width * shift_count_fraction / NUM_FRAC_DENOM;
|
|
}
|
|
|
|
#if USERFILE
|
|
public void
|
|
opt_k(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
if (lesskey(s, 0))
|
|
{
|
|
parg.p_string = s;
|
|
error("Cannot use lesskey file \"%s\"", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if HAVE_LESSKEYSRC
|
|
public void
|
|
opt_ks(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
if (lesskey_src(s, 0))
|
|
{
|
|
parg.p_string = s;
|
|
error("Cannot use lesskey source file \"%s\"", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
#endif /* HAVE_LESSKEYSRC */
|
|
#endif /* USERFILE */
|
|
|
|
#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 = save(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();
|
|
/*
|
|
* Try to open the file containing the tag
|
|
* and search for the tag in that file.
|
|
*/
|
|
if (edit_tagfile() || (pos = tagsearch()) == NULL_POSITION)
|
|
{
|
|
/* Failed: reopen the old file. */
|
|
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;
|
|
char *filename;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
tags = save(s);
|
|
break;
|
|
case TOGGLE:
|
|
s = skipsp(s);
|
|
if (tags != NULL && tags != ztags)
|
|
free(tags);
|
|
filename = lglob(s);
|
|
tags = shell_unquote(filename);
|
|
free(filename);
|
|
break;
|
|
case QUERY:
|
|
parg.p_string = tags;
|
|
error("Tags file \"%s\"", &parg);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Handler for -p option.
|
|
*/
|
|
public void
|
|
opt_p(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
/*
|
|
* Unget a command for the specified string.
|
|
*/
|
|
if (less_is_more)
|
|
{
|
|
/*
|
|
* In "more" mode, the -p argument is a command,
|
|
* not a search string, so we don't need a slash.
|
|
*/
|
|
every_first_cmd = save(s);
|
|
} else
|
|
{
|
|
plusoption = TRUE;
|
|
/*
|
|
* {{ This won't work if the "/" command is
|
|
* changed or invalidated by a .lesskey file. }}
|
|
*/
|
|
ungetsc("/");
|
|
ungetsc(s);
|
|
ungetcc_back(CHAR_END_COMMAND);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for -P option.
|
|
*/
|
|
public void
|
|
opt__P(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
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;
|
|
case 'w': proto = &wproto; 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 INIT:
|
|
case TOGGLE:
|
|
/*
|
|
* Set the new number of buffers.
|
|
*/
|
|
ch_setbufspace(bufspace);
|
|
break;
|
|
case QUERY:
|
|
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:
|
|
dispversion();
|
|
break;
|
|
case INIT:
|
|
set_output(1); /* Force output to stdout per GNU standard for --version output. */
|
|
putstr("less ");
|
|
putstr(version);
|
|
putstr(" (");
|
|
putstr(pattern_lib_name());
|
|
putstr(" regular expressions)\n");
|
|
{
|
|
char constant *copyright =
|
|
"Copyright (C) 1984-2022 Mark Nudelman\n\n";
|
|
putstr(copyright);
|
|
}
|
|
if (version[strlen(version)-1] == 'x')
|
|
{
|
|
putstr("** This is an EXPERIMENTAL build of the 'less' software,\n");
|
|
putstr("** and may not function correctly.\n");
|
|
putstr("** Obtain release builds from the web page below.\n\n");
|
|
}
|
|
putstr("less comes with NO WARRANTY, to the extent permitted by law.\n");
|
|
putstr("For information about the terms of redistribution,\n");
|
|
putstr("see the file named README in the less distribution.\n");
|
|
putstr("Home page: https://greenwoodsoftware.com/less\n");
|
|
quit(QUIT_OK);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if MSDOS_COMPILER
|
|
/*
|
|
* Parse an MSDOS color descriptor.
|
|
*/
|
|
static void
|
|
colordesc(s, fg_color, bg_color)
|
|
char *s;
|
|
int *fg_color;
|
|
int *bg_color;
|
|
{
|
|
int fg, bg;
|
|
#if MSDOS_COMPILER==WIN32C
|
|
int ul = 0;
|
|
|
|
if (*s == 'u')
|
|
{
|
|
ul = COMMON_LVB_UNDERSCORE;
|
|
s++;
|
|
if (*s == '\0')
|
|
{
|
|
*fg_color = nm_fg_color | ul;
|
|
*bg_color = nm_bg_color;
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
if (parse_color(s, &fg, &bg) == CT_NULL)
|
|
{
|
|
PARG p;
|
|
p.p_string = s;
|
|
error("Invalid color string \"%s\"", &p);
|
|
} else
|
|
{
|
|
if (fg == CV_NOCHANGE)
|
|
fg = nm_fg_color;
|
|
if (bg == CV_NOCHANGE)
|
|
bg = nm_bg_color;
|
|
#if MSDOS_COMPILER==WIN32C
|
|
fg |= ul;
|
|
#endif
|
|
*fg_color = fg;
|
|
*bg_color = bg;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
color_from_namechar(namechar)
|
|
char namechar;
|
|
{
|
|
switch (namechar)
|
|
{
|
|
case 'B': return AT_COLOR_BIN;
|
|
case 'C': return AT_COLOR_CTRL;
|
|
case 'E': return AT_COLOR_ERROR;
|
|
case 'H': return AT_COLOR_HEADER;
|
|
case 'M': return AT_COLOR_MARK;
|
|
case 'N': return AT_COLOR_LINENUM;
|
|
case 'P': return AT_COLOR_PROMPT;
|
|
case 'R': return AT_COLOR_RSCROLL;
|
|
case 'S': return AT_COLOR_SEARCH;
|
|
case 'W': case 'A': return AT_COLOR_ATTN;
|
|
case 'n': return AT_NORMAL;
|
|
case 's': return AT_STANDOUT;
|
|
case 'd': return AT_BOLD;
|
|
case 'u': return AT_UNDERLINE;
|
|
case 'k': return AT_BLINK;
|
|
default: return -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the -D option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_D(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG p;
|
|
int attr;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
#if MSDOS_COMPILER
|
|
if (*s == 'a')
|
|
{
|
|
sgr_mode = !sgr_mode;
|
|
break;
|
|
}
|
|
#endif
|
|
attr = color_from_namechar(s[0]);
|
|
if (attr < 0)
|
|
{
|
|
p.p_char = s[0];
|
|
error("Invalid color specifier '%c'", &p);
|
|
return;
|
|
}
|
|
if (!use_color && (attr & AT_COLOR))
|
|
{
|
|
error("Set --use-color before changing colors", NULL_PARG);
|
|
return;
|
|
}
|
|
s++;
|
|
#if MSDOS_COMPILER
|
|
if (!(attr & AT_COLOR))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case AT_NORMAL:
|
|
colordesc(s, &nm_fg_color, &nm_bg_color);
|
|
break;
|
|
case AT_BOLD:
|
|
colordesc(s, &bo_fg_color, &bo_bg_color);
|
|
break;
|
|
case AT_UNDERLINE:
|
|
colordesc(s, &ul_fg_color, &ul_bg_color);
|
|
break;
|
|
case AT_BLINK:
|
|
colordesc(s, &bl_fg_color, &bl_bg_color);
|
|
break;
|
|
case AT_STANDOUT:
|
|
colordesc(s, &so_fg_color, &so_bg_color);
|
|
break;
|
|
}
|
|
if (type == TOGGLE)
|
|
{
|
|
at_enter(AT_STANDOUT);
|
|
at_exit();
|
|
}
|
|
} else
|
|
#endif
|
|
if (set_color_map(attr, s) < 0)
|
|
{
|
|
p.p_string = s;
|
|
error("Invalid color string \"%s\"", &p);
|
|
return;
|
|
}
|
|
break;
|
|
#if MSDOS_COMPILER
|
|
case QUERY:
|
|
p.p_string = (sgr_mode) ? "on" : "off";
|
|
error("SGR mode is %s", &p);
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the -x option.
|
|
*/
|
|
public void
|
|
opt_x(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
extern int tabstops[];
|
|
extern int ntabstops;
|
|
extern int tabdefault;
|
|
char msg[60+((INT_STRLEN_BOUND(int)+1)*TABSTOP_MAX)];
|
|
int i;
|
|
PARG p;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
/* Start at 1 because tabstops[0] is always zero. */
|
|
for (i = 1; i < TABSTOP_MAX; )
|
|
{
|
|
int n = 0;
|
|
s = skipsp(s);
|
|
while (*s >= '0' && *s <= '9')
|
|
n = (10 * n) + (*s++ - '0');
|
|
if (n > tabstops[i-1])
|
|
tabstops[i++] = n;
|
|
s = skipsp(s);
|
|
if (*s++ != ',')
|
|
break;
|
|
}
|
|
if (i < 2)
|
|
return;
|
|
ntabstops = i;
|
|
tabdefault = tabstops[ntabstops-1] - tabstops[ntabstops-2];
|
|
break;
|
|
case QUERY:
|
|
strcpy(msg, "Tab stops ");
|
|
if (ntabstops > 2)
|
|
{
|
|
for (i = 1; i < ntabstops; i++)
|
|
{
|
|
if (i > 1)
|
|
strcat(msg, ",");
|
|
sprintf(msg+strlen(msg), "%d", tabstops[i]);
|
|
}
|
|
sprintf(msg+strlen(msg), " and then ");
|
|
}
|
|
sprintf(msg+strlen(msg), "every %d spaces",
|
|
tabdefault);
|
|
p.p_string = msg;
|
|
error("%s", &p);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Handler for the -" option.
|
|
*/
|
|
public void
|
|
opt_quote(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
char buf[3];
|
|
PARG parg;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (s[0] == '\0')
|
|
{
|
|
openquote = closequote = '\0';
|
|
break;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --rscroll option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_rscroll(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG p;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE: {
|
|
char *fmt;
|
|
int attr = AT_STANDOUT;
|
|
setfmt(s, &fmt, &attr, "*s>");
|
|
if (strcmp(fmt, "-") == 0)
|
|
{
|
|
rscroll_char = 0;
|
|
} else
|
|
{
|
|
rscroll_char = *fmt ? *fmt : '>';
|
|
rscroll_attr = attr|AT_COLOR_RSCROLL;
|
|
}
|
|
break; }
|
|
case QUERY: {
|
|
p.p_string = rscroll_char ? prchar(rscroll_char) : "-";
|
|
error("rscroll char is %s", &p);
|
|
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;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --mouse option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_mousecap(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case TOGGLE:
|
|
if (mousecap == OPT_OFF)
|
|
deinit_mouse();
|
|
else
|
|
init_mouse();
|
|
break;
|
|
case INIT:
|
|
case QUERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --wheel-lines option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_wheel_lines(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (wheel_lines <= 0)
|
|
wheel_lines = default_wheel_lines();
|
|
break;
|
|
case QUERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --line-number-width option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_linenum_width(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (linenum_width > MAX_LINENUM_WIDTH)
|
|
{
|
|
parg.p_int = MAX_LINENUM_WIDTH;
|
|
error("Line number width must not be larger than %d", &parg);
|
|
linenum_width = MIN_LINENUM_WIDTH;
|
|
}
|
|
break;
|
|
case QUERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --status-column-width option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_status_col_width(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
PARG parg;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (status_col_width > MAX_STATUSCOL_WIDTH)
|
|
{
|
|
parg.p_int = MAX_STATUSCOL_WIDTH;
|
|
error("Status column width must not be larger than %d", &parg);
|
|
status_col_width = 2;
|
|
}
|
|
break;
|
|
case QUERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --file-size option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_filesize(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
if (want_filesize && curr_ifile != NULL && ch_length() == NULL_POSITION)
|
|
scan_eof();
|
|
break;
|
|
case QUERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --header option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_header(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
int err;
|
|
int n;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
n = getnum(&s, "header", &err);
|
|
if (err)
|
|
error("invalid number of lines", NULL_PARG);
|
|
else
|
|
{
|
|
header_lines = n;
|
|
header_cols = 0;
|
|
if (*s == ',')
|
|
{
|
|
++s;
|
|
n = getnum(&s, "header", &err);
|
|
if (err)
|
|
error("invalid number of columns", NULL_PARG);
|
|
else
|
|
header_cols = n;
|
|
}
|
|
}
|
|
break;
|
|
case QUERY:
|
|
{
|
|
char buf[2*INT_STRLEN_BOUND(int)+2];
|
|
PARG parg;
|
|
SNPRINTF2(buf, sizeof(buf), "%d,%d", header_lines, header_cols);
|
|
parg.p_string = buf;
|
|
error("header (lines,columns) is %s", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --search-options option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_search_type(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
int st;
|
|
PARG parg;
|
|
char buf[16];
|
|
char *bp;
|
|
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
case TOGGLE:
|
|
st = 0;
|
|
for (; *s != '\0'; s++)
|
|
{
|
|
switch (*s)
|
|
{
|
|
case 'E': case 'e': case CONTROL('E'): st |= SRCH_PAST_EOF; break;
|
|
case 'F': case 'f': case CONTROL('F'): st |= SRCH_FIRST_FILE; break;
|
|
case 'K': case 'k': case CONTROL('K'): st |= SRCH_NO_MOVE; break;
|
|
case 'N': case 'n': case CONTROL('N'): st |= SRCH_NO_MATCH; break;
|
|
case 'R': case 'r': case CONTROL('R'): st |= SRCH_NO_REGEX; break;
|
|
case 'W': case 'w': case CONTROL('W'): st |= SRCH_WRAP; break;
|
|
case '-': st = 0; break;
|
|
case '^': break;
|
|
default:
|
|
parg.p_char = *s;
|
|
error("invalid search option '%c'", &parg);
|
|
return;
|
|
}
|
|
}
|
|
def_search_type = norm_search_type(st);
|
|
break;
|
|
case QUERY:
|
|
bp = buf;
|
|
if (def_search_type & SRCH_PAST_EOF) *bp++ = 'E';
|
|
if (def_search_type & SRCH_FIRST_FILE) *bp++ = 'F';
|
|
if (def_search_type & SRCH_NO_MOVE) *bp++ = 'K';
|
|
if (def_search_type & SRCH_NO_MATCH) *bp++ = 'N';
|
|
if (def_search_type & SRCH_NO_REGEX) *bp++ = 'R';
|
|
if (def_search_type & SRCH_WRAP) *bp++ = 'W';
|
|
if (bp == buf)
|
|
*bp++ = '-';
|
|
*bp = '\0';
|
|
parg.p_string = buf;
|
|
error("search options: %s", &parg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if LESSTEST
|
|
/*
|
|
* Handler for the --tty option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_ttyin_name(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
ttyin_name = s;
|
|
is_tty = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for the --rstat option.
|
|
*/
|
|
/*ARGSUSED*/
|
|
public void
|
|
opt_rstat(type, s)
|
|
int type;
|
|
char *s;
|
|
{
|
|
switch (type)
|
|
{
|
|
case INIT:
|
|
rstat_file = open(s, O_WRONLY|O_CREAT, 0664);
|
|
if (rstat_file < 0)
|
|
{
|
|
PARG parg;
|
|
parg.p_string = s;
|
|
error("Cannot create rstat file \"%s\"", &parg);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
#endif /*LESSTEST*/
|
|
|
|
public int
|
|
chop_line(VOID_PARAM)
|
|
{
|
|
return (chopline || header_cols > 0 || header_lines > 0);
|
|
}
|
|
|
|
/*
|
|
* Get the "screen window" size.
|
|
*/
|
|
public int
|
|
get_swindow(VOID_PARAM)
|
|
{
|
|
if (swindow > 0)
|
|
return (swindow);
|
|
return (sc_height - header_lines + swindow);
|
|
}
|
|
|