1 /* A simple growing buffer for GDB. 2 3 Copyright (C) 2009-2012 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifdef GDBSERVER 21 #include "server.h" 22 #else 23 #include "defs.h" 24 #endif 25 26 #include "xml-utils.h" 27 #include "buffer.h" 28 29 #include <stdlib.h> 30 #include <string.h> 31 #include <stdio.h> 32 33 void 34 buffer_grow (struct buffer *buffer, const char *data, size_t size) 35 { 36 char *new_buffer; 37 size_t new_buffer_size; 38 39 if (size == 0) 40 return; 41 42 new_buffer_size = buffer->buffer_size; 43 44 if (new_buffer_size == 0) 45 new_buffer_size = 1; 46 47 while (buffer->used_size + size > new_buffer_size) 48 new_buffer_size *= 2; 49 new_buffer = xrealloc (buffer->buffer, new_buffer_size); 50 if (!new_buffer) 51 abort (); 52 memcpy (new_buffer + buffer->used_size, data, size); 53 buffer->buffer = new_buffer; 54 buffer->buffer_size = new_buffer_size; 55 buffer->used_size += size; 56 } 57 58 void 59 buffer_free (struct buffer *buffer) 60 { 61 if (!buffer) 62 return; 63 64 xfree (buffer->buffer); 65 buffer->buffer = NULL; 66 buffer->buffer_size = 0; 67 buffer->used_size = 0; 68 } 69 70 void 71 buffer_init (struct buffer *buffer) 72 { 73 memset (buffer, 0, sizeof (*buffer)); 74 } 75 76 char* 77 buffer_finish (struct buffer *buffer) 78 { 79 char *ret = buffer->buffer; 80 buffer->buffer = NULL; 81 buffer->buffer_size = 0; 82 buffer->used_size = 0; 83 return ret; 84 } 85 86 void 87 buffer_xml_printf (struct buffer *buffer, const char *format, ...) 88 { 89 va_list ap; 90 const char *f; 91 const char *prev; 92 int percent = 0; 93 94 va_start (ap, format); 95 96 prev = format; 97 for (f = format; *f; f++) 98 { 99 if (percent) 100 { 101 char buf[32]; 102 char *p; 103 char *str = buf; 104 105 switch (*f) 106 { 107 case 's': 108 str = va_arg (ap, char *); 109 break; 110 case 'd': 111 sprintf (str, "%d", va_arg (ap, int)); 112 break; 113 case 'u': 114 sprintf (str, "%u", va_arg (ap, unsigned int)); 115 break; 116 case 'x': 117 sprintf (str, "%x", va_arg (ap, unsigned int)); 118 break; 119 case 'o': 120 sprintf (str, "%o", va_arg (ap, unsigned int)); 121 break; 122 default: 123 str = 0; 124 break; 125 } 126 127 if (str) 128 { 129 buffer_grow (buffer, prev, f - prev - 1); 130 p = xml_escape_text (str); 131 buffer_grow_str (buffer, p); 132 xfree (p); 133 prev = f + 1; 134 } 135 percent = 0; 136 } 137 else if (*f == '%') 138 percent = 1; 139 } 140 141 buffer_grow_str (buffer, prev); 142 va_end (ap); 143 } 144 145