/* $OpenBSD: captoinfo.c,v 1.16 2010/01/12 23:22:06 nicm Exp $ */

/****************************************************************************

 * Copyright (c) 1998-2006,2008 Free Software Foundation, Inc.              *

 *                                                                          *

 * Permission is hereby granted, free of charge, to any person obtaining a  *

 * copy of this software and associated documentation files (the            *

 * "Software"), to deal in the Software without restriction, including      *

 * without limitation the rights to use, copy, modify, merge, publish,      *

 * distribute, distribute with modifications, sublicense, and/or sell       *

 * copies of the Software, and to permit persons to whom the Software is    *

 * furnished to do so, subject to the following conditions:                 *

 *                                                                          *

 * The above copyright notice and this permission notice shall be included  *

 * in all copies or substantial portions of the Software.                   *

 *                                                                          *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *

 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *

 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *

 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *

 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *

 *                                                                          *

 * Except as contained in this notice, the name(s) of the above copyright   *

 * holders shall not be used in advertising or otherwise to promote the     *

 * sale, use or other dealings in this Software without prior written       *

 * authorization.                                                           *

 ****************************************************************************/

/****************************************************************************

 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *

 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *

 *     and: Thomas E. Dickey                        1996-on                 *

 ****************************************************************************/

/*

 *	captoinfo.c --- conversion between termcap and terminfo formats

 *

 *	The captoinfo() code was swiped from Ross Ridge's mytinfo package,

 *	adapted to fit ncurses by Eric S. Raymond <esr@snark.thyrsus.com>.

 *

 *	There is just one entry point:

 *

 *	char *_nc_captoinfo(n, s, parameterized)

 *

 *	Convert value s for termcap string capability named n into terminfo

 *	format.

 *

 *	This code recognizes all the standard 4.4BSD %-escapes:

 *

 *	%%       output `%'

 *	%d       output value as in printf %d

 *	%2       output value as in printf %2d

 *	%3       output value as in printf %3d

 *	%.       output value as in printf %c

 *	%+x      add x to value, then do %.

 *	%>xy     if value > x then add y, no output

 *	%r       reverse order of two parameters, no output

 *	%i       increment by one, no output

 *	%n       exclusive-or all parameters with 0140 (Datamedia 2500)

 *	%B       BCD (16*(value/10)) + (value%10), no output

 *	%D       Reverse coding (value - 2*(value%16)), no output (Delta Data).

 *

 *	Also, %02 and %03 are accepted as synonyms for %2 and %3.

 *

 *	Besides all the standard termcap escapes, this translator understands

 *	the following extended escapes:

 *

 *	used by GNU Emacs termcap libraries

 *		%a[+*-/=][cp]x	GNU arithmetic.

 *		%m		xor the first two parameters by 0177

 *		%b		backup to previous parameter

 *		%f		skip this parameter

 *

 *	used by the University of Waterloo (MFCF) termcap libraries

 *		%-x	 subtract parameter FROM char x and output it as a char

 *		%ax	 add the character x to parameter

 *

 *	If #define WATERLOO is on, also enable these translations:

 *

 *		%sx	 subtract parameter FROM the character x

 *

 *	By default, this Waterloo translations are not compiled in, because

 *	the Waterloo %s conflicts with the way terminfo uses %s in strings for

 *	function programming.

 *

 *	Note the two definitions of %a: the GNU definition is translated if the

 *	characters after the 'a' are valid for it, otherwise the UW definition

 *	is translated.

 */

#include <curses.priv.h>

#include <ctype.h>

#include <tic.h>

MODULE_ID("$Id: captoinfo.c,v 1.16 2010/01/12 23:22:06 nicm Exp $")

#define MAX_PUSHED	16	/* max # args we can push onto the stack */

static int stack[MAX_PUSHED];	/* the stack */

static int stackptr;		/* the next empty place on the stack */

static int onstack;		/* the top of stack */

static int seenm;		/* seen a %m */

static int seenn;		/* seen a %n */

static int seenr;		/* seen a %r */

static int param;		/* current parameter */

static char *dp;		/* pointer to end of the converted string */

static char *my_string;

static size_t my_length;

static char *

init_string(void)

/* initialize 'my_string', 'my_length' */

{

}

static char *

save_string(char *d, const char *const s)

{

    size_t copied;

    }

}

static NCURSES_INLINE char *

save_char(char *s, int c)

{

    static char temp[2];

}

static void

push(void)

/* push onstack on to the stack */

{

    else

}

static void

pop(void)

/* pop the top of the stack into onstack */

{

	else

    } else

}

static int

cvtchar(register const char *sp)

/* convert a character to a terminfo push */

{

    unsigned char c = 0;

    int len;

    case '\\':

	case '\'':

	case '$':

	case '\\':

	case '%':

	    len = 2;

	case '\0':

	    c = '\\';

	    len = 1;

	case '0':

	case '1':

	case '2':

	case '3':

	    len = 1;

	    }

	    break;

	default:

	    c = (unsigned char) (*sp);

	    len = 2;

	}

	break;

    case '^':

	len = 2;

    default:

	c = (unsigned char) (*sp);

	len = 1;

    }

	dp = save_char(dp, '\'');

    }

}

static void

getparm(int parm, int n)

/* push n copies of param on the terminfo stack if not already there */

{

    }

	    dp = save_string(dp, "%Pa");

	    }

	}

	return;

    }

    }

    }

    }

}

/*

 * Convert a termcap string to terminfo format.

 * 'cap' is the relevant terminfo capability index.

 * 's' is the string value of the capability.

 * 'parameterized' tells what type of translations to do:

 *	% translations if 1

 *	pad translations if >=0

 */

NCURSES_EXPORT(char *)

_nc_captoinfo(const char *cap, const char *s, int const parameterized)

{

    const char *capstart;

    /* skip the initial padding (if we haven't been told not to) */

    capstart = 0;

		break;

	case '%':

	    }

	    case '%':

	    case 'r':

		}

		break;

	    case 'm':

		}

		break;

	    case 'n':

		}

		break;

	    case 'i':

	    case '6':

	    case 'B':

	    case '8':

	    case 'D':

	    case '>':

		/* %?%{x}%>%t%{y}%+%; */

	    case 'a':

		    int l;

		    l = 2;

			}

			l++;

		    case '+':

		    case '-':

		    case '*':

		    case '/':

		    case '=':

				onstack = 2;

				onstack = 1;

			    else

				onstack = param;

			} else

			    onstack = param;

		    }

		    break;

		}

	    case '+':

	    case 's':

#ifdef WATERLOO

		s += cvtchar(s);

		getparm(param, 1);

		dp = save_string(dp, "%-");

#else

#endif /* WATERLOO */

	    case '-':

	    case '.':

	    case '0':		/* not clear any of the historical termcaps did this */

		    goto see03;

		    goto invalid;

		/* FALLTHRU */

	    case '2':

	    case '3':

	      see03:

	    case 'd':

	    case 'f':

	    case 'b':

	    case '\\':

	    default:

	      invalid:

	    }

	    break;

#ifdef REVISIBILIZE

	case '\\':

	    dp = save_char(dp, *s++);

	    dp = save_char(dp, *s++);

	    break;

	case '\n':

	    dp = save_string(dp, "\\n");

	    s++;

	    break;

	case '\t':

	    dp = save_string(dp, "\\t");

	    s++;

	    break;

	case '\r':

	    dp = save_string(dp, "\\r");

	    s++;

	    break;

	case '\200':

	    dp = save_string(dp, "\\0");

	    s++;

	    break;

	case '\f':

	    dp = save_string(dp, "\\f");

	    s++;

	    break;

	case '\b':

	    dp = save_string(dp, "\\b");

	    s++;

	    break;

	case ' ':

	    dp = save_string(dp, "\\s");

	    s++;

	    break;

	case '^':

	    dp = save_string(dp, "\\^");

	    s++;

	    break;

	case ':':

	    dp = save_string(dp, "\\:");

	    s++;

	    break;

	case ',':

	    dp = save_string(dp, "\\,");

	    s++;

	    break;

	default:

	    if (*s == '\033') {

		dp = save_string(dp, "\\E");

		s++;

	    } else if (*s > 0 && *s < 32) {

		dp = save_char(dp, '^');

		dp = save_char(dp, *s + '@');

		s++;

	    } else if (*s <= 0 || *s >= 127) {

		dp = save_char(dp, '\\');

		dp = save_char(dp, ((*s & 0300) >> 6) + '0');

		dp = save_char(dp, ((*s & 0070) >> 3) + '0');

		dp = save_char(dp, (*s & 0007) + '0');

		s++;

	    } else

		dp = save_char(dp, *s++);

	    break;

#else

	default:

#endif

	}

    }

    /*

     * Now, if we stripped off some leading padding, add it at the end

     * of the string as mandatory padding.

     */

	    else

		break;

    }

}

/*

 * Check for an expression that corresponds to "%B" (BCD):

 *	(parameter / 10) * 16 + (parameter % 10)

 */

static int

bcd_expression(const char *str)

{

    /* leave this non-const for HPUX */

    static char fmt[] = "%%p%c%%{10}%%/%%{16}%%*%%p%c%%{10}%%m%%+";

    int len = 0;

	len = 28;

#ifndef NDEBUG

	{

	    char buffer[80];

	    int tst;

	    snprintf(buffer, sizeof(buffer), fmt, ch1, ch2);

	    tst = strlen(buffer) - 1;

	    assert(len == tst);

	}

#endif

    }

}

static char *

save_tc_char(char *bufptr, int c1)

{

	else

    }

}

static char *

save_tc_inequality(char *bufptr, int c1, int c2)

{

}

/*

 * Here are the capabilities infotocap assumes it can translate to:

 *

 *     %%       output `%'

 *     %d       output value as in printf %d

 *     %2       output value as in printf %2d

 *     %3       output value as in printf %3d

 *     %.       output value as in printf %c

 *     %+c      add character c to value, then do %.

 *     %>xy     if value > x then add y, no output

 *     %r       reverse order of two parameters, no output

 *     %i       increment by one, no output

 *     %n       exclusive-or all parameters with 0140 (Datamedia 2500)

 *     %B       BCD (16*(value/10)) + (value%10), no output

 *     %D       Reverse coding (value - 2*(value%16)), no output (Delta Data).

 *     %m       exclusive-or all parameters with 0177 (not in 4.4BSD)

 */

/*

 * Convert a terminfo string to termcap format.  Parameters are as in

 * _nc_captoinfo().

 */

NCURSES_EXPORT(char *)

_nc_infotocap(const char *cap GCC_UNUSED, const char *str, int const parameterized)

{

    int seenone = 0, seentwo = 0, saw_m = 0, saw_n = 0;

    const char *padding;

    const char *trimmed = 0;

    int len;

    bool syntax_error = FALSE;

    /* we may have to move some trailing mandatory padding up front */

    }

	char *cp = 0;

	}

	/* FIXME: this "works" for 'delta' */

	    }

	    }

	} else {		/* cm-style format element */

	    case '%':

	    case '0':

	    case '1':

	    case '2':

	    case '3':

	    case '4':

	    case '5':

	    case '6':

	    case '7':

	    case '8':

	    case '9':

		}

		break;

	    case 'd':

	    case 'c':

		/*

		 * %s isn't in termcap, but it's convenient to pass it through

		 * so we can represent things like terminfo pfkey strings in

		 * termcap notation.

		 */

	    case 's':

	    case 'p':

		    }

		break;

	    case 'i':

	    default:

		syntax_error = TRUE;

	    }			/* endswitch (*str) */

	}			/* endelse (*str == '%') */

	/*

	 * 'str' always points to the end of what was scanned in this step,

	 * but that may not be the end of the string.

	 */

	assert(str != 0);

}

#ifdef MAIN

int curr_line;

int

main(int argc, char *argv[])

{

    int c, tc = FALSE;

    while ((c = getopt(argc, argv, "c")) != EOF)

	switch (c) {

	case 'c':

	    tc = TRUE;

	    break;

	}

    curr_line = 0;

    for (;;) {

	char buf[BUFSIZ];

	++curr_line;

	if (fgets(buf, sizeof(buf), stdin) == NULL)

	    break;

	buflen = strlen(buf);

	if (buflen > 0 && buf[buflen - 1] == '\n')

		buf[buflen - 1] = '\0';

	_nc_set_source(buf);

	if (tc) {

	    char *cp = _nc_infotocap("to termcap", buf, 1);

	    if (cp)

		(void) fputs(cp, stdout);

	} else

	    (void) fputs(_nc_captoinfo("to terminfo", buf, 1), stdout);

	(void) putchar('\n');

    }

    return (0);

}

#endif /* MAIN */

#if NO_LEAKS

NCURSES_EXPORT(void)

_nc_captoinfo_leaks(void)

{

    if (my_string != 0) {

	FreeAndNull(my_string);

    }

    my_length = 0;

}

#endif