Kannel: Open Source WAP and SMS gateway  $Revision: 5037 $
wsbuffer.c
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56 
57 /*
58  *
59  * wsbuffer.c
60  *
61  * Author: Markku Rossi <mtr@iki.fi>
62  *
63  * Copyright (c) 1999-2000 WAPIT OY LTD.
64  * All rights reserved.
65  *
66  * A multipurpose buffer.
67  *
68  */
69 
70 #include "wsint.h"
71 
72 /********************* Global functions *********************************/
73 
74 void ws_buffer_init(WsBuffer *buffer)
75 {
76  buffer->len = 0;
77  buffer->data = NULL;
78 }
79 
80 
82 {
83  ws_free(buffer->data);
84  buffer->len = 0;
85  buffer->data = NULL;
86 }
87 
88 
90 {
91  return ws_calloc(1, sizeof(WsBuffer));
92 }
93 
94 
95 void ws_buffer_free(WsBuffer *buffer)
96 {
97  ws_free(buffer->data);
98  ws_free(buffer);
99 }
100 
101 
102 WsBool ws_buffer_append(WsBuffer *buffer, unsigned char *data, size_t len)
103 {
104  unsigned char *p;
105 
106  if (!ws_buffer_append_space(buffer, &p, len))
107  return WS_FALSE;
108 
109  memcpy(p, data, len);
110 
111  return WS_TRUE;
112 }
113 
114 
115 WsBool ws_buffer_append_space(WsBuffer *buffer, unsigned char **p, size_t size)
116 {
117  unsigned char *ndata = ws_realloc(buffer->data, buffer->len + size);
118 
119  if (ndata == NULL)
120  return WS_FALSE;
121 
122  buffer->data = ndata;
123 
124  if (p)
125  *p = buffer->data + buffer->len;
126 
127  buffer->len += size;
128 
129  return WS_TRUE;
130 }
131 
132 
133 unsigned char *ws_buffer_ptr(WsBuffer *buffer)
134 {
135  return buffer->data;
136 }
137 
138 
139 size_t ws_buffer_len(WsBuffer *buffer)
140 {
141  return buffer->len;
142 }
143 
144 
145 unsigned char *ws_buffer_steal(WsBuffer *buffer)
146 {
147  unsigned char *p = buffer->data;
148 
149  buffer->data = NULL;
150  buffer->len = 0;
151 
152  return p;
153 }
void * ws_calloc(size_t num, size_t size)
Definition: wsalloc.c:83
int size
Definition: wsasm.c:84
Definition: wsint.h:131
void ws_free(void *ptr)
Definition: wsalloc.c:139
size_t ws_buffer_len(WsBuffer *buffer)
Definition: wsbuffer.c:139
void * ws_realloc(void *ptr, size_t size)
Definition: wsalloc.c:89
WsBuffer * ws_buffer_alloc()
Definition: wsbuffer.c:89
void ws_buffer_free(WsBuffer *buffer)
Definition: wsbuffer.c:95
unsigned char * ws_buffer_steal(WsBuffer *buffer)
Definition: wsbuffer.c:145
size_t len
Definition: wsbuffer.h:79
void ws_buffer_init(WsBuffer *buffer)
Definition: wsbuffer.c:74
void ws_buffer_uninit(WsBuffer *buffer)
Definition: wsbuffer.c:81
WsBool
Definition: wsint.h:128
WsBool ws_buffer_append_space(WsBuffer *buffer, unsigned char **p, size_t size)
Definition: wsbuffer.c:115
unsigned char * data
Definition: wsbuffer.h:80
unsigned char * ws_buffer_ptr(WsBuffer *buffer)
Definition: wsbuffer.c:133
WsBool ws_buffer_append(WsBuffer *buffer, unsigned char *data, size_t len)
Definition: wsbuffer.c:102
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