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Diffstat (limited to 'ncurses-5.3/ncurses/trace/lib_trace.c')
| -rw-r--r-- | ncurses-5.3/ncurses/trace/lib_trace.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/trace/lib_trace.c b/ncurses-5.3/ncurses/trace/lib_trace.c new file mode 100644 index 0000000..5d0482c --- /dev/null +++ b/ncurses-5.3/ncurses/trace/lib_trace.c @@ -0,0 +1,180 @@ +/**************************************************************************** + * Copyright (c) 1998-2001,2002 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> * + ****************************************************************************/ + +/* + * lib_trace.c - Tracing/Debugging routines + */ + +#include <curses.priv.h> +#include <tic.h> + +#include <ctype.h> + +MODULE_ID("$Id$") + +NCURSES_EXPORT_VAR(unsigned) _nc_tracing = 0; /* always define this */ + +#ifdef TRACE +NCURSES_EXPORT_VAR(const char *) _nc_tputs_trace = ""; +NCURSES_EXPORT_VAR(long) _nc_outchars = 0; + +static FILE *tracefp; /* default to writing to stderr */ + +NCURSES_EXPORT(void) +trace(const unsigned int tracelevel GCC_UNUSED) +{ + static bool been_here = FALSE; + static char my_name[] = "trace"; + + if (!been_here && tracelevel) { + been_here = TRUE; + + _nc_tracing = tracelevel; + if (_nc_access(my_name, W_OK) < 0 + || (tracefp = fopen(my_name, "wb")) == 0) { + perror("curses: Can't open 'trace' file: "); + exit(EXIT_FAILURE); + } + /* Try to set line-buffered mode, or (failing that) unbuffered, + * so that the trace-output gets flushed automatically at the + * end of each line. This is useful in case the program dies. + */ +#if HAVE_SETVBUF /* ANSI */ + (void) setvbuf(tracefp, (char *) 0, _IOLBF, 0); +#elif HAVE_SETBUF /* POSIX */ + (void) setbuffer(tracefp, (char *) 0); +#endif + _tracef("TRACING NCURSES version %s (tracelevel=%#x)", + curses_version(), tracelevel); + } else if (_nc_tracing != tracelevel) { + _nc_tracing = tracelevel; + _tracef("tracelevel=%#x", tracelevel); + } +} + +NCURSES_EXPORT(void) +_tracef(const char *fmt,...) +{ + static const char Called[] = T_CALLED(""); + static const char Return[] = T_RETURN(""); + static int level; + va_list ap; + bool before = FALSE; + bool after = FALSE; + int doit = _nc_tracing; + int save_err = errno; + + if (strlen(fmt) >= sizeof(Called) - 1) { + if (!strncmp(fmt, Called, sizeof(Called) - 1)) { + before = TRUE; + level++; + } else if (!strncmp(fmt, Return, sizeof(Return) - 1)) { + after = TRUE; + } + if (before || after) { + if ((level <= 1) + || (doit & TRACE_ICALLS) != 0) + doit &= (TRACE_CALLS | TRACE_CCALLS); + else + doit = 0; + } + } + + if (doit != 0) { + if (tracefp == 0) + tracefp = stderr; + if (before || after) { + int n; + for (n = 1; n < level; n++) + fputs("+ ", tracefp); + } + va_start(ap, fmt); + vfprintf(tracefp, fmt, ap); + fputc('\n', tracefp); + va_end(ap); + fflush(tracefp); + } + + if (after && level) + level--; + errno = save_err; +} + +/* Trace 'bool' return-values */ +NCURSES_EXPORT(NCURSES_BOOL) +_nc_retrace_bool(NCURSES_BOOL code) +{ + T((T_RETURN("%s"), code ? "TRUE" : "FALSE")); + return code; +} + +/* Trace 'int' return-values */ +NCURSES_EXPORT(int) +_nc_retrace_int(int code) +{ + T((T_RETURN("%d"), code)); + return code; +} + +/* Trace 'unsigned' return-values */ +NCURSES_EXPORT(unsigned) +_nc_retrace_unsigned(unsigned code) +{ + T((T_RETURN("%#x"), code)); + return code; +} + +/* Trace 'char*' return-values */ +NCURSES_EXPORT(char *) +_nc_retrace_ptr(char *code) +{ + T((T_RETURN("%s"), _nc_visbuf(code))); + return code; +} + +/* Trace 'SCREEN *' return-values */ +NCURSES_EXPORT(SCREEN *) +_nc_retrace_sp(SCREEN * code) +{ + T((T_RETURN("%p"), code)); + return code; +} + +/* Trace 'WINDOW *' return-values */ +NCURSES_EXPORT(WINDOW *) +_nc_retrace_win(WINDOW *code) +{ + T((T_RETURN("%p"), code)); + return code; +} +#endif /* TRACE */ |