diff options
Diffstat (limited to 'contrib/ncurses/ncurses/trace/lib_trace.c')
-rw-r--r-- | contrib/ncurses/ncurses/trace/lib_trace.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/contrib/ncurses/ncurses/trace/lib_trace.c b/contrib/ncurses/ncurses/trace/lib_trace.c new file mode 100644 index 000000000000..aa4b887111a7 --- /dev/null +++ b/contrib/ncurses/ncurses/trace/lib_trace.c @@ -0,0 +1,200 @@ +/**************************************************************************** + * Copyright (c) 1998 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> + +MODULE_ID("$Id: lib_trace.c,v 1.30 1998/10/03 23:41:42 tom Exp $") + +#include <ctype.h> +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif + +unsigned _nc_tracing = 0; /* always define this */ + +#ifdef TRACE +const char *_nc_tputs_trace = ""; +long _nc_outchars; + +static FILE * tracefp; /* default to writing to stderr */ +#endif + +void trace(const unsigned int tracelevel GCC_UNUSED) +{ +#ifdef TRACE +static bool been_here = FALSE; +static char my_name[] = "trace"; + + _nc_tracing = tracelevel; + if (! been_here && tracelevel) { + been_here = TRUE; + + if (_nc_access(my_name, W_OK) < 0 + || (tracefp = fopen(my_name, "w")) == 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 (%d)", + NCURSES_VERSION, NCURSES_VERSION_PATCH); + } +#endif +} + +const char *_nc_visbuf2(int bufnum, const char *buf) +/* visibilize a given string */ +{ +char *vbuf; +char *tp; +int c; + + if (buf == 0) + return("(null)"); + if (buf == CANCELLED_STRING) + return("(cancelled)"); + + tp = vbuf = _nc_trace_buf(bufnum, (strlen(buf) * 4) + 5); + *tp++ = '"'; + while ((c = *buf++) != '\0') { + if (c == '"') { + *tp++ = '\\'; *tp++ = '"'; + } else if (is7bits(c) && (isgraph(c) || c == ' ')) { + *tp++ = c; + } else if (c == '\n') { + *tp++ = '\\'; *tp++ = 'n'; + } else if (c == '\r') { + *tp++ = '\\'; *tp++ = 'r'; + } else if (c == '\b') { + *tp++ = '\\'; *tp++ = 'b'; + } else if (c == '\033') { + *tp++ = '\\'; *tp++ = 'e'; + } else if (is7bits(c) && iscntrl(c)) { + *tp++ = '\\'; *tp++ = '^'; *tp++ = '@' + c; + } else { + sprintf(tp, "\\%03o", c & 0xff); + tp += strlen(tp); + } + } + *tp++ = '"'; + *tp++ = '\0'; + return(vbuf); +} + +const char *_nc_visbuf(const char *buf) +{ + return _nc_visbuf2(0, buf); +} + +#ifdef TRACE +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 'int' return-values */ +int _nc_retrace_int(int code) +{ + T((T_RETURN("%d"), code)); + return code; +} + +/* Trace 'char*' return-values */ +char * _nc_retrace_ptr(char * code) +{ + T((T_RETURN("%s"), _nc_visbuf(code))); + return code; +} + +/* Trace 'WINDOW *' return-values */ +WINDOW *_nc_retrace_win(WINDOW *code) +{ + T((T_RETURN("%p"), code)); + return code; +} +#endif /* TRACE */ |