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    /* $OpenBSD: trace_buf.c,v 1.4 2010/01/12 23:22:07 nicm Exp $ */  | 
    
    
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    /****************************************************************************  | 
    
    
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     * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *  | 
    
    
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     *                                                                          *  | 
    
    
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     * Permission is hereby granted, free of charge, to any person obtaining a  *  | 
    
    
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     * copy of this software and associated documentation files (the            *  | 
    
    
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     * "Software"), to deal in the Software without restriction, including      *  | 
    
    
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     * without limitation the rights to use, copy, modify, merge, publish,      *  | 
    
    
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     * distribute, distribute with modifications, sublicense, and/or sell       *  | 
    
    
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     * copies of the Software, and to permit persons to whom the Software is    *  | 
    
    
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     * furnished to do so, subject to the following conditions:                 *  | 
    
    
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     *                                                                          *  | 
    
    
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     * The above copyright notice and this permission notice shall be included  *  | 
    
    
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     * in all copies or substantial portions of the Software.                   *  | 
    
    
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     *                                                                          *  | 
    
    
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     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *  | 
    
    
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     * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *  | 
    
    
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     * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *  | 
    
    
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     * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *  | 
    
    
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     * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *  | 
    
    
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     * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *  | 
    
    
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     * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *  | 
    
    
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     *                                                                          *  | 
    
    
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     * Except as contained in this notice, the name(s) of the above copyright   *  | 
    
    
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     * holders shall not be used in advertising or otherwise to promote the     *  | 
    
    
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     * sale, use or other dealings in this Software without prior written       *  | 
    
    
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     * authorization.                                                           *  | 
    
    
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     ****************************************************************************/  | 
    
    
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    /****************************************************************************  | 
    
    
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     *  Author: Thomas E. Dickey                 1997-on                        *  | 
    
    
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     ****************************************************************************/  | 
    
    
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    /*  | 
    
    
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     *	trace_buf.c - Tracing/Debugging buffers (attributes)  | 
    
    
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     */  | 
    
    
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    #include <curses.priv.h>  | 
    
    
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    MODULE_ID("$Id: trace_buf.c,v 1.4 2010/01/12 23:22:07 nicm Exp $") | 
    
    
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    #define MyList _nc_globals.tracebuf_ptr  | 
    
    
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    #define MySize _nc_globals.tracebuf_used  | 
    
    
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    static char *  | 
    
    
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    _nc_trace_alloc(int bufnum, size_t want)  | 
    
    
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    { | 
    
    
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    #ifdef TRACE  | 
    
    
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        char *result = 0;  | 
    
    
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        if (bufnum >= 0) { | 
    
    
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    	if ((size_t) (bufnum + 1) > MySize) { | 
    
    
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    	    size_t need = (bufnum + 1) * 2;  | 
    
    
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    	    if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) { | 
    
    
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    		while (need > MySize)  | 
    
    
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    		    MyList[MySize++].text = 0;  | 
    
    
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    	    }  | 
    
    
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    	}  | 
    
    
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    	if (MyList != 0) { | 
    
    
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    	    if (MyList[bufnum].text == 0  | 
    
    
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    		|| want > MyList[bufnum].size) { | 
    
    
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    		MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);  | 
    
    
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    		if (MyList[bufnum].text != 0)  | 
    
    
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    		    MyList[bufnum].size = want;  | 
    
    
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    	    }  | 
    
    
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    	    result = MyList[bufnum].text;  | 
    
    
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    	}  | 
    
    
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        }  | 
    
    
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    #if NO_LEAKS  | 
    
    
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        else { | 
    
    
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    	if (MySize) { | 
    
    
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    	    if (MyList) { | 
    
    
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    		while (MySize--) { | 
    
    
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    		    if (MyList[MySize].text != 0) { | 
    
    
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    			free(MyList[MySize].text);  | 
    
    
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    		    }  | 
    
    
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    		}  | 
    
    
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    		free(MyList);  | 
    
    
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    		MyList = 0;  | 
    
    
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    	    }  | 
    
    
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    	    MySize = 0;  | 
    
    
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    	}  | 
    
    
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        }  | 
    
    
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    #endif  | 
    
    
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        return result;  | 
    
    
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    #else  | 
    
    
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        return NULL;  | 
    
    
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    #endif  | 
    
    
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    }  | 
    
    
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    /*  | 
    
    
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     * (re)Allocate a buffer big enough for the caller's wants.  | 
    
    
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     */  | 
    
    
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    NCURSES_EXPORT(char *)  | 
    
    
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    _nc_trace_buf(int bufnum, size_t want)  | 
    
    
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    { | 
    
    
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        char *result = _nc_trace_alloc(bufnum, want);  | 
    
    
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        if (result != 0)  | 
    
    
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    	*result = '\0';  | 
    
    
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        return result;  | 
    
    
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    }  | 
    
    
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    /*  | 
    
    
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     * Append a new string to an existing buffer.  | 
    
    
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     */  | 
    
    
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    NCURSES_EXPORT(char *)  | 
    
    
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    _nc_trace_bufcat(int bufnum, const char *value)  | 
    
    
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    { | 
    
    
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        char *buffer = _nc_trace_alloc(bufnum, 0);  | 
    
    
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        if (buffer != 0) { | 
    
    
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            size_t have = strlen(buffer), length;  | 
    
    
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    	length = 1 + have + strlen(value);  | 
    
    
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    	buffer = _nc_trace_alloc(bufnum, length);  | 
    
    
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    	if (buffer != 0)  | 
    
    
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    	     (void) strlcpy(buffer + have, value, length);  | 
    
    
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        }  | 
    
    
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        return buffer;  | 
    
    
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    }  |