/****************************************************************************
 * Copyright (c) 1998-2004,2005 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: Thomas Dickey                           1996-on                 *
 *     and: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

/*
 *	lib_traceatr.c - Tracing/Debugging routines (attributes)
 */

#include <curses.priv.h>
#include <term.h>		/* acs_chars */

MODULE_ID("$Id: lib_traceatr.c,v 1.53 2005/08/20 20:21:20 tom Exp $")

#define COLOR_OF(c) ((c < 0) ? "default" : (c > 7 ? color_of(c) : colors[c].name))

#ifdef TRACE

static const char l_brace[] = {L_BRACE, 0};
static const char r_brace[] = {R_BRACE, 0};

#ifndef USE_TERMLIB
static char *
color_of(int c)
{
    static char buffer[2][80];
    static int sel;
    static int last = -1;

    if (c != last) {
	last = c;
	sel = !sel;
	if (c == COLOR_DEFAULT)
	    strcpy(buffer[sel], "default");
	else
	    sprintf(buffer[sel], "color%d", c);
    }
    return buffer[sel];
}
#endif /* !USE_TERMLIB */

NCURSES_EXPORT(char *)
_traceattr2(int bufnum, attr_t newmode)
{
    char *buf = _nc_trace_buf(bufnum, BUFSIZ);
    char temp[80];
    static const struct {
	unsigned int val;
	const char *name;
    } names[] =
    {
	/* *INDENT-OFF* */
	{ A_STANDOUT,		"A_STANDOUT" },
	{ A_UNDERLINE,		"A_UNDERLINE" },
	{ A_REVERSE,		"A_REVERSE" },
	{ A_BLINK,		"A_BLINK" },
	{ A_DIM,		"A_DIM" },
	{ A_BOLD,		"A_BOLD" },
	{ A_ALTCHARSET,		"A_ALTCHARSET" },
	{ A_INVIS,		"A_INVIS" },
	{ A_PROTECT,		"A_PROTECT" },
	{ A_CHARTEXT,		"A_CHARTEXT" },
	{ A_NORMAL,		"A_NORMAL" },
	{ A_COLOR,		"A_COLOR" },
	/* *INDENT-ON* */

    }
#ifndef USE_TERMLIB
    ,
	colors[] =
    {
	/* *INDENT-OFF* */
	{ COLOR_BLACK,		"COLOR_BLACK" },
	{ COLOR_RED,		"COLOR_RED" },
	{ COLOR_GREEN,		"COLOR_GREEN" },
	{ COLOR_YELLOW,		"COLOR_YELLOW" },
	{ COLOR_BLUE,		"COLOR_BLUE" },
	{ COLOR_MAGENTA,	"COLOR_MAGENTA" },
	{ COLOR_CYAN,		"COLOR_CYAN" },
	{ COLOR_WHITE,		"COLOR_WHITE" },
	/* *INDENT-ON* */

    }
#endif /* !USE_TERMLIB */
    ;
    size_t n;
    unsigned save_nc_tracing = _nc_tracing;
    _nc_tracing = 0;

    strcpy(buf, l_brace);

    for (n = 0; n < SIZEOF(names); n++) {
	if ((newmode & names[n].val) != 0) {
	    if (buf[1] != '\0')
		buf = _nc_trace_bufcat(bufnum, "|");
	    buf = _nc_trace_bufcat(bufnum, names[n].name);

	    if (names[n].val == A_COLOR) {
		short pairnum = PAIR_NUMBER(newmode);
#ifdef USE_TERMLIB
		/* pair_content lives in libncurses */
		(void) sprintf(temp, "{%d}", pairnum);
#else
		short fg, bg;

		if (pair_content(pairnum, &fg, &bg) == OK) {
		    (void) sprintf(temp,
				   "{%d = {%s, %s}}",
				   pairnum,
				   COLOR_OF(fg),
				   COLOR_OF(bg));
		} else {
		    (void) sprintf(temp, "{%d}", pairnum);
		}
#endif
		buf = _nc_trace_bufcat(bufnum, temp);
	    }
	}
    }
    if (ChAttrOf(newmode) == A_NORMAL) {
	if (buf[1] != '\0')
	    (void) _nc_trace_bufcat(bufnum, "|");
	(void) _nc_trace_bufcat(bufnum, "A_NORMAL");
    }

    _nc_tracing = save_nc_tracing;
    return (_nc_trace_bufcat(bufnum, r_brace));
}

NCURSES_EXPORT(char *)
_traceattr(attr_t newmode)
{
    return _traceattr2(0, newmode);
}

/* Trace 'int' return-values */
NCURSES_EXPORT(attr_t)
_nc_retrace_attr_t(attr_t code)
{
    T((T_RETURN("%s"), _traceattr(code)));
    return code;
}

const char *
_nc_altcharset_name(attr_t attr, chtype ch)
{
    const char *result = 0;

    if ((attr & A_ALTCHARSET) && (acs_chars != 0)) {
	char *cp;
	char *found = 0;
	static const struct {
	    unsigned int val;
	    const char *name;
	} names[] =
	{
	    /* *INDENT-OFF* */
	    { 'l', "ACS_ULCORNER" },	/* upper left corner */
	    { 'm', "ACS_LLCORNER" },	/* lower left corner */
	    { 'k', "ACS_URCORNER" },	/* upper right corner */
	    { 'j', "ACS_LRCORNER" },	/* lower right corner */
	    { 't', "ACS_LTEE" },	/* tee pointing right */
	    { 'u', "ACS_RTEE" },	/* tee pointing left */
	    { 'v', "ACS_BTEE" },	/* tee pointing up */
	    { 'w', "ACS_TTEE" },	/* tee pointing down */
	    { 'q', "ACS_HLINE" },	/* horizontal line */
	    { 'x', "ACS_VLINE" },	/* vertical line */
	    { 'n', "ACS_PLUS" },	/* large plus or crossover */
	    { 'o', "ACS_S1" },		/* scan line 1 */
	    { 's', "ACS_S9" },		/* scan line 9 */
	    { '`', "ACS_DIAMOND" },	/* diamond */
	    { 'a', "ACS_CKBOARD" },	/* checker board (stipple) */
	    { 'f', "ACS_DEGREE" },	/* degree symbol */
	    { 'g', "ACS_PLMINUS" },	/* plus/minus */
	    { '~', "ACS_BULLET" },	/* bullet */
	    { ',', "ACS_LARROW" },	/* arrow pointing left */
	    { '+', "ACS_RARROW" },	/* arrow pointing right */
	    { '.', "ACS_DARROW" },	/* arrow pointing down */
	    { '-', "ACS_UARROW" },	/* arrow pointing up */
	    { 'h', "ACS_BOARD" },	/* board of squares */
	    { 'i', "ACS_LANTERN" },	/* lantern symbol */
	    { '0', "ACS_BLOCK" },	/* solid square block */
	    { 'p', "ACS_S3" },		/* scan line 3 */
	    { 'r', "ACS_S7" },		/* scan line 7 */
	    { 'y', "ACS_LEQUAL" },	/* less/equal */
	    { 'z', "ACS_GEQUAL" },	/* greater/equal */
	    { '{', "ACS_PI" },		/* Pi */
	    { '|', "ACS_NEQUAL" },	/* not equal */
	    { '}', "ACS_STERLING" },	/* UK pound sign */
	    { '\0', (char *) 0 }
		/* *INDENT-OFF* */
	},
	    *sp;

	for (cp = acs_chars; cp[0] && cp[1]; cp += 2) {
	    if (ChCharOf(cp[1]) == ChCharOf(ch)) {
		found = cp;
		/* don't exit from loop - there may be redefinitions */
	    }
	}

	if (found != 0) {
	    ch = ChCharOf(*found);
	    for (sp = names; sp->val; sp++)
		if (sp->val == ch) {
		    result = sp->name;
		    break;
		}
	}
    }
    return result;
}

NCURSES_EXPORT(char *)
_tracechtype2(int bufnum, chtype ch)
{
    const char *found;

    strcpy(_nc_trace_buf(bufnum, BUFSIZ), l_brace);
    if ((found = _nc_altcharset_name(ChAttrOf(ch), ch)) != 0) {
	(void) _nc_trace_bufcat(bufnum, found);
    } else
	(void) _nc_trace_bufcat(bufnum, _tracechar((int)ChCharOf(ch)));

    if (ChAttrOf(ch) != A_NORMAL) {
	(void) _nc_trace_bufcat(bufnum, " | ");
	(void) _nc_trace_bufcat(bufnum,
		_traceattr2(bufnum + 20, ChAttrOf(ch)));
    }

    return (_nc_trace_bufcat(bufnum, r_brace));
}

NCURSES_EXPORT(char *)
_tracechtype (chtype ch)
{
    return _tracechtype2(0, ch);
}

/* Trace 'chtype' return-values */
NCURSES_EXPORT(chtype)
_nc_retrace_chtype (chtype code)
{
    T((T_RETURN("%s"), _tracechtype(code)));
    return code;
}

#if USE_WIDEC_SUPPORT
NCURSES_EXPORT(char *)
_tracecchar_t2 (int bufnum, const cchar_t *ch)
{
    char *buf = _nc_trace_buf(bufnum, BUFSIZ);
    attr_t attr;
    const char *found;

    strcpy(buf, l_brace);
    if (ch != 0) {
	attr = AttrOfD(ch);
	if ((found = _nc_altcharset_name(attr, CharOfD(ch))) != 0) {
	    (void) _nc_trace_bufcat(bufnum, found);
	    attr &= ~A_ALTCHARSET;
	} else if (isWidecExt(CHDEREF(ch))) {
	    (void) _nc_trace_bufcat(bufnum, "{NAC}");
	    attr &= ~A_CHARTEXT;
	} else {
	    PUTC_DATA;
	    int n;

	    PUTC_INIT;
	    (void) _nc_trace_bufcat(bufnum, "{ ");
	    do {
		PUTC_ch = PUTC_i < CCHARW_MAX ? ch->chars[PUTC_i] : L'\0';
		PUTC_n = wcrtomb(PUTC_buf, ch->chars[PUTC_i], &PUT_st);
		if (PUTC_ch == L'\0')
		    --PUTC_n;
		if (PUTC_n <= 0) {
		    if (PUTC_ch != L'\0') {
			/* it could not be a multibyte sequence */
			(void) _nc_trace_bufcat(bufnum, _tracechar(UChar(ch->chars[PUTC_i])));
		    }
		    break;
		}
		for (n = 0; n < PUTC_n; n++) {
		    if (n)
			(void) _nc_trace_bufcat(bufnum, ", ");
		    (void) _nc_trace_bufcat(bufnum, _tracechar(UChar(PUTC_buf[n])));
		}
		++PUTC_i;
	    } while (PUTC_ch != L'\0');
	    (void) _nc_trace_bufcat(bufnum, " }");
	}
	if (attr != A_NORMAL) {
	    (void) _nc_trace_bufcat(bufnum, " | ");
	    (void) _nc_trace_bufcat(bufnum, _traceattr2(bufnum + 20, attr));
	}
    }

    return (_nc_trace_bufcat(bufnum, r_brace));
}

NCURSES_EXPORT(char *)
_tracecchar_t (const cchar_t *ch)
{
    return _tracecchar_t2(0, ch);
}
#endif

#else
empty_module(_nc_lib_traceatr)
#endif /* TRACE */
