Kannel: Open Source WAP and SMS gateway  $Revision: 5037 $
wsstream_data.c
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56 
57 /*
58  *
59  * wsstream_data.c
60  *
61  * Author: Markku Rossi <mtr@iki.fi>
62  *
63  * Copyright (c) 1999-2000 WAPIT OY LTD.
64  * All rights reserved.
65  *
66  * Implementation of the data streams.
67  *
68  */
69 
70 #include "wmlscript/wsint.h"
71 
72 /********************* Types and definitions ****************************/
73 
75 {
76  const unsigned char *data;
77  size_t data_len;
78  size_t data_pos;
79 };
80 
82 
83 /********************* Static method functions **************************/
84 
85 static size_t data_input(void *context, WsUInt32 *buf, size_t buflen)
86 {
87  WsStreamDataInputCtx *ctx = (WsStreamDataInputCtx *) context;
88  size_t read;
89 
90  for (read = 0;
91  read < buflen && ctx->data_pos < ctx->data_len;
92  read++, ctx->data_pos++)
93  buf[read] = ctx->data[ctx->data_pos];
94 
95  return read;
96 }
97 
98 
99 static void data_close(void *context)
100 {
101  WsStreamDataInputCtx *ctx = (WsStreamDataInputCtx *) context;
102 
103  ws_free(ctx);
104 }
105 
106 /********************* Global functions *********************************/
107 
108 WsStream *ws_stream_new_data_input(const unsigned char *data, size_t data_len)
109 {
110  WsStreamDataInputCtx *ctx = ws_calloc(1, sizeof(*ctx));
111  WsStream *stream;
112 
113  if (ctx == NULL)
114  return NULL;
115 
116  ctx->data = data;
117  ctx->data_len = data_len;
118 
119  stream = ws_stream_new(ctx, data_input, NULL, data_close);
120 
121  if (stream == NULL)
122  /* The stream creation failed. Close the stream context. */
123  data_close(ctx);
124 
125  return stream;
126 }
void * ws_calloc(size_t num, size_t size)
Definition: wsalloc.c:83
Definition: parse.c:65
unsigned long WsUInt32
Definition: wsint.h:122
void ws_free(void *ptr)
Definition: wsalloc.c:139
WsStream * ws_stream_new_data_input(const unsigned char *data, size_t data_len)
WsStream * ws_stream_new(void *context, WsStreamIOProc io, WsStreamFlushProc flush, WsStreamCloseProc close)
Definition: wsstream.c:126
static size_t data_input(void *context, WsUInt32 *buf, size_t buflen)
Definition: wsstream_data.c:85
static void data_close(void *context)
Definition: wsstream_data.c:99
const unsigned char * data
Definition: wsstream_data.c:76
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