trace_buf.c revision 272461
1/**************************************************************************** 2 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29/**************************************************************************** 30 * Author: Thomas E. Dickey 1997-on * 31 ****************************************************************************/ 32/* 33 * trace_buf.c - Tracing/Debugging buffers (attributes) 34 */ 35 36#include <curses.priv.h> 37 38MODULE_ID("$Id: trace_buf.c,v 1.14 2008/08/03 15:13:56 tom Exp $") 39 40#define MyList _nc_globals.tracebuf_ptr 41#define MySize _nc_globals.tracebuf_used 42 43static char * 44_nc_trace_alloc(int bufnum, size_t want) 45{ 46 char *result = 0; 47 48 if (bufnum >= 0) { 49 if ((size_t) (bufnum + 1) > MySize) { 50 size_t need = (bufnum + 1) * 2; 51 if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) { 52 while (need > MySize) 53 MyList[MySize++].text = 0; 54 } 55 } 56 57 if (MyList != 0) { 58 if (MyList[bufnum].text == 0 59 || want > MyList[bufnum].size) { 60 MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text); 61 if (MyList[bufnum].text != 0) 62 MyList[bufnum].size = want; 63 } 64 result = MyList[bufnum].text; 65 } 66 } 67#if NO_LEAKS 68 else { 69 if (MySize) { 70 if (MyList) { 71 while (MySize--) { 72 if (MyList[MySize].text != 0) { 73 free(MyList[MySize].text); 74 } 75 } 76 free(MyList); 77 MyList = 0; 78 } 79 MySize = 0; 80 } 81 } 82#endif 83 return result; 84} 85 86/* 87 * (re)Allocate a buffer big enough for the caller's wants. 88 */ 89NCURSES_EXPORT(char *) 90_nc_trace_buf(int bufnum, size_t want) 91{ 92 char *result = _nc_trace_alloc(bufnum, want); 93 if (result != 0) 94 *result = '\0'; 95 return result; 96} 97 98/* 99 * Append a new string to an existing buffer. 100 */ 101NCURSES_EXPORT(char *) 102_nc_trace_bufcat(int bufnum, const char *value) 103{ 104 char *buffer = _nc_trace_alloc(bufnum, 0); 105 if (buffer != 0) { 106 size_t have = strlen(buffer); 107 108 buffer = _nc_trace_alloc(bufnum, 1 + have + strlen(value)); 109 if (buffer != 0) 110 (void) strcpy(buffer + have, value); 111 112 } 113 return buffer; 114} 115