gno/bin/less/opttbl.c

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/*
* The option table.
*/
#pragma noroot
#include "less.h"
#include "option.h"
#ifdef _ORCAC_
segment "LoadSegONE";
#endif
#define toupper(c) ((c)-'a'+'A')
/*
* 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 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 */
#if __MSDOS__
public int output_mode; /* Which screen output method */
public int refresh_on_quit; /* Repaint screen on quit, if possible */
#endif
/*
* Table of all options and their semantics.
*/
static struct option option[] =
{
{ 'a', BOOL, 0, &how_search, NULL,
"Search includes displayed screen",
"Search skips displayed screen",
NULL
},
{ 'b', NUMBER, 10, &cbufs, opt_b,
"Buffers: ",
"%d buffers",
NULL
},
{ 'B', BOOL, 1, &autobuf, NULL,
"Don't automatically allocate buffers",
"Automatically allocate buffers when needed",
NULL
},
{ 'c', TRIPLE, 0, &top_scroll, NULL,
"Repaint by scrolling from bottom of screen",
"Repaint by clearing each line",
"Repaint by painting from top of screen"
},
{ 'd', BOOL|NO_TOGGLE, 0, &know_dumb, NULL,
"Assume intelligent terminal",
"Assume dumb terminal",
NULL
},
/* { 'e', TRIPLE, 0, &quit_at_eof, NULL,*/
{ 'e', TRIPLE, 1, &quit_at_eof, NULL,
"Don't quit at end-of-file",
"Quit at end-of-file",
"Quit immediately at end-of-file"
},
{ 'f', BOOL, 0, &force_open, NULL,
"Open only regular files",
"Open even non-regular files",
NULL
},
{ 'h', NUMBER, -1, &back_scroll, NULL,
"Backwards scroll limit: ",
"Backwards scroll limit is %d lines",
NULL
},
{ 'H', BOOL|NO_TOGGLE, 0, &nohelp, NULL,
"Allow help command",
"Don't allow help command",
NULL
},
{ 'i', BOOL, 0, &caseless, NULL,
"Case is significant in searches",
"Ignore case in searches",
NULL
},
{ 'j', NUMBER, 1, &jump_sline, NULL,
"Target line: ",
"Position target at screen line %d",
NULL
},
#if USERFILE
{ 'k', STRING|NO_TOGGLE, 0, NULL, opt_k,
NULL, NULL, NULL
},
#endif
#if LOGFILE
{ 'l', STRING, 0, NULL, opt_l,
NULL, NULL, NULL
},
{ 'L', STRING, 0, NULL, opt__L,
NULL, NULL, NULL
},
#endif
/* { 'm', TRIPLE, 0, &pr_type, NULL,*/
{ 'm', TRIPLE, 0, &pr_type, NULL,
"Short prompt",
"Medium prompt",
"Long prompt"
},
{ 'n', TRIPLE|REPAINT, 1, &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, 0, NULL, opt_p,
NULL, NULL, NULL
},
{ 'P', STRING, 0, NULL, opt__P,
"prompt: ", NULL, NULL
},
{ 'q', TRIPLE, 0, &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, 1, &ctldisp, NULL,*/
{ 'r', BOOL|REPAINT, 0, &ctldisp, NULL,
"Display control characters directly",
"Display control characters as ^X",
NULL
},
#if __MSDOS__
{ 'R', BOOL|REPAINT, 0, &refresh_on_quit, NULL,
"Don't repaint screen on quit",
"Repaint screen on quit",
NULL
},
#endif
{ 's', BOOL|REPAINT, 0, &squeeze, NULL,
"Display all blank lines",
"Squeeze multiple blank lines",
NULL
},
{ 'S', BOOL|REPAINT, 0, &chopline, NULL,
"Fold long lines",
"Chop long lines",
NULL
},
#if TAGS
{ 't', STRING, 0, NULL, opt_t,
"tag: ", NULL, NULL
},
{ 'T', STRING, 0, NULL, opt__T,
"tags file: ", NULL, NULL
},
#endif
{ 'u', TRIPLE|REPAINT, 0, &bs_mode, NULL,
"Display underlined text in underline mode",
"Backspaces cause overstrike",
"Print backspace as ^H"
},
#if __MSDOS__
{ 'v', TRIPLE|NO_TOGGLE, 0, &output_mode, opt_v,
"Output is to standard output, using ansi screen control",
"Output is to video BIOS",
"Output is directly to memory mapped video"
},
#endif
{ 'w', BOOL|REPAINT, 1, &twiddle, NULL,
"Display nothing for lines after end-of-file",
"Display ~ for lines after end-of-file",
NULL
},
#if __MSDOS__
#if MOVE_WINDOW
#define W_FLAGS STRING
#else
#define W_FLAGS STRING|NO_TOGGLE
#endif
{ 'W', W_FLAGS, 0, NULL, opt_W,
"window boundaries: ", NULL, NULL
},
#undef W_FLAGS
#endif
{ 'x', NUMBER|REPAINT, 8, &tabstop, NULL,
"Tab stops: ",
"Tab stops every %d spaces",
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(void)
{
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);
}