1 /**************************************************************************** 2 * Copyright (c) 1998-2011,2012 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 38 MODULE_ID("$Id: trace_buf.c,v 1.20 2012/02/22 22:34:31 tom Exp $") 39 40 #ifdef TRACE 41 42 #define MyList _nc_globals.tracebuf_ptr 43 #define MySize _nc_globals.tracebuf_used 44 45 static char * 46 _nc_trace_alloc(int bufnum, size_t want) 47 { 48 char *result = 0; 49 50 if (bufnum >= 0) { 51 if ((size_t) (bufnum + 1) > MySize) { 52 size_t need = (size_t) (bufnum + 1) * 2; 53 if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) { 54 while (need > MySize) 55 MyList[MySize++].text = 0; 56 } 57 } 58 59 if (MyList != 0) { 60 if (MyList[bufnum].text == 0 61 || want > MyList[bufnum].size) { 62 MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text); 63 if (MyList[bufnum].text != 0) 64 MyList[bufnum].size = want; 65 } 66 result = MyList[bufnum].text; 67 } 68 } 69 #if NO_LEAKS 70 else { 71 if (MySize) { 72 if (MyList) { 73 while (MySize--) { 74 if (MyList[MySize].text != 0) { 75 free(MyList[MySize].text); 76 } 77 } 78 free(MyList); 79 MyList = 0; 80 } 81 MySize = 0; 82 } 83 } 84 #endif 85 return result; 86 } 87 88 /* 89 * (re)Allocate a buffer big enough for the caller's wants. 90 */ 91 NCURSES_EXPORT(char *) 92 _nc_trace_buf(int bufnum, size_t want) 93 { 94 char *result = _nc_trace_alloc(bufnum, want); 95 if (result != 0) 96 *result = '\0'; 97 return result; 98 } 99 100 /* 101 * Append a new string to an existing buffer. 102 */ 103 NCURSES_EXPORT(char *) 104 _nc_trace_bufcat(int bufnum, const char *value) 105 { 106 char *buffer = _nc_trace_alloc(bufnum, (size_t) 0); 107 if (buffer != 0) { 108 size_t have = strlen(buffer); 109 size_t need = strlen(value) + have; 110 111 buffer = _nc_trace_alloc(bufnum, 1 + need); 112 if (buffer != 0) 113 _nc_STRCPY(buffer + have, value, need); 114 115 } 116 return buffer; 117 } 118 #else 119 EMPTY_MODULE(_nc_empty_trace_buf) 120 #endif /* TRACE */ 121