lib_tracedmp.c revision 97049 
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28
29/****************************************************************************
30 *  Author: Thomas E. Dickey 1996-2001                                      *
31 *     and: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
32 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
33 ****************************************************************************/
34
35/*
36 *	lib_tracedmp.c - Tracing/Debugging routines
37 */
38
39#include <curses.priv.h>
40#include <ctype.h>
41
42MODULE_ID("$Id: lib_tracedmp.c,v 1.22 2001/11/03 15:45:35 tom Exp $")
43
44#ifdef TRACE
45NCURSES_EXPORT(void)
46_tracedump(const char *name, WINDOW *win)
47{
48    static char *buf = 0;
49    static size_t used = 0;
50
51    int i, j, n, width;
52
53    /* compute narrowest possible display width */
54    for (width = i = 0; i <= win->_maxy; ++i) {
55	n = 0;
56	for (j = 0; j <= win->_maxx; ++j)
57	    if (CharOf(win->_line[i].text[j]) != L(' '))
58		n = j;
59
60	if (n > width)
61	    width = n;
62    }
63    if (width < win->_maxx)
64	++width;
65    if (++width + 1 > (int) used) {
66	used = 2 * (width + 1);
67	buf = _nc_doalloc(buf, used);
68    }
69
70    for (n = 0; n <= win->_maxy; ++n) {
71	char *ep = buf;
72	bool haveattrs, havecolors;
73
74	/*
75	 * Dump A_CHARTEXT part.  It is more important to make the grid line up
76	 * in the trace file than to represent control- and wide-characters, so
77	 * we map those to '.' and '?' respectively.
78	 */
79	for (j = 0; j < width; ++j) {
80	    chtype test = CharOf(win->_line[n].text[j]);
81	    ep[j] = (UChar(test) == test
82#if USE_WIDEC_SUPPORT
83		     && (win->_line[n].text[j].chars[1] == 0)
84#endif
85		)
86		? (iscntrl(UChar(test))
87		   ? '.'
88		   : UChar(test))
89		: '?';
90	}
91	ep[j] = '\0';
92	_tracef("%s[%2d] %3d%3d ='%s'",
93		name, n,
94		win->_line[n].firstchar,
95		win->_line[n].lastchar,
96		ep);
97
98	/* dump A_COLOR part, will screw up if there are more than 96 */
99	havecolors = FALSE;
100	for (j = 0; j < width; ++j)
101	    if (AttrOf(win->_line[n].text[j]) & A_COLOR) {
102		havecolors = TRUE;
103		break;
104	    }
105	if (havecolors) {
106	    ep = buf;
107	    for (j = 0; j < width; ++j)
108		ep[j] = UChar(CharOf(win->_line[n].text[j]) >>
109			      NCURSES_ATTR_SHIFT) + ' ';
110	    ep[j] = '\0';
111	    _tracef("%*s[%2d]%*s='%s'", (int) strlen(name),
112		    "colors", n, 8, " ", buf);
113	}
114
115	for (i = 0; i < 4; ++i) {
116	    const char *hex = " 123456789ABCDEF";
117	    attr_t mask = (0xf << ((i + 4) * 4));
118
119	    haveattrs = FALSE;
120	    for (j = 0; j < width; ++j)
121		if (AttrOf(win->_line[n].text[j]) & mask) {
122		    haveattrs = TRUE;
123		    break;
124		}
125	    if (haveattrs) {
126		ep = buf;
127		for (j = 0; j < width; ++j)
128		    ep[j] = hex[(AttrOf(win->_line[n].text[j]) & mask) >>
129				((i + 4) * 4)];
130		ep[j] = '\0';
131		_tracef("%*s%d[%2d]%*s='%s'", (int) strlen(name) -
132			1, "attrs", i, n, 8, " ", buf);
133	    }
134	}
135    }
136#if NO_LEAKS
137    free(buf);
138    used = 0;
139#endif
140}
141
142#else
143empty_module(_nc_lib_tracedmp)
144#endif /* TRACE */
145