Patrick Barrett / HTTPClient

Fork of wolfSSL's HTTPClient fork. Fork!

Dependencies:   CyaSSL

Dependents:   exosite_http_example exosite_http_example

Fork of HTTPClient by wolf SSL

data/HTTPMap.cpp@34:a34fcee9f204, 2015-01-20 (annotated)

Committer:
Patrick Barrett
Date:
Tue Jan 20 14:29:43 2015 -0600
Revision:
34:a34fcee9f204
Parent:
33:bdd333d3939c 
missed a couple things

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:2ccb9960a044 1 /* HTTPMap.cpp */
donatien 10:e1351de84c16 2 /* Copyright (C) 2012 mbed.org, MIT License
donatien 10:e1351de84c16 3 *
donatien 10:e1351de84c16 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
donatien 10:e1351de84c16 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
donatien 10:e1351de84c16 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
donatien 10:e1351de84c16 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
donatien 10:e1351de84c16 8 * furnished to do so, subject to the following conditions:
donatien 10:e1351de84c16 9 *
donatien 10:e1351de84c16 10 * The above copyright notice and this permission notice shall be included in all copies or
donatien 10:e1351de84c16 11 * substantial portions of the Software.
donatien 10:e1351de84c16 12 *
donatien 10:e1351de84c16 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
donatien 10:e1351de84c16 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
donatien 10:e1351de84c16 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
donatien 10:e1351de84c16 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
donatien 10:e1351de84c16 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
donatien 10:e1351de84c16 18 */
donatien 0:2ccb9960a044 19
donatien 0:2ccb9960a044 20 #include "HTTPMap.h"
donatien 0:2ccb9960a044 21
donatien 0:2ccb9960a044 22 #include <cstring>
donatien 0:2ccb9960a044 23
donatien 0:2ccb9960a044 24 #include <cctype>
donatien 0:2ccb9960a044 25
donatien 13:be61104f4e91 26 #define OK 0
donatien 13:be61104f4e91 27
Patrick Barrett 33:bdd333d3939c 28 #define MIN(x,y) (((x)<(y))?(x):(y))
Patrick Barrett 33:bdd333d3939c 29 #define MAX(x,y) (((x)>(y))?(x):(y))
Patrick Barrett 33:bdd333d3939c 30
donatien 13:be61104f4e91 31 using std::strncpy;
Patrick Barrett 33:bdd333d3939c 32 using std::memcpy;
Patrick Barrett 33:bdd333d3939c 33
Patrick Barrett 33:bdd333d3939c 34 static char UrlDecode(char* str, size_t& offset);
Patrick Barrett 33:bdd333d3939c 35 static char HexDecode(char c);
donatien 13:be61104f4e91 36
donatien 0:2ccb9960a044 37 HTTPMap::HTTPMap() : m_pos(0), m_count(0)
donatien 0:2ccb9960a044 38 {
donatien 0:2ccb9960a044 39
donatien 0:2ccb9960a044 40 }
donatien 0:2ccb9960a044 41
Patrick Barrett 33:bdd333d3939c 42 HTTPMap::HTTPMap(char* str, size_t size) : m_str(str), m_size(size), m_pos(0), m_read_pos(0)
Patrick Barrett 33:bdd333d3939c 43 {
Patrick Barrett 33:bdd333d3939c 44
Patrick Barrett 33:bdd333d3939c 45 }
Patrick Barrett 33:bdd333d3939c 46
donatien 0:2ccb9960a044 47 void HTTPMap::put(const char* key, const char* value)
donatien 0:2ccb9960a044 48 {
donatien 0:2ccb9960a044 49 if(m_count >= HTTPMAP_TABLE_SIZE)
donatien 0:2ccb9960a044 50 {
donatien 0:2ccb9960a044 51 return;
donatien 0:2ccb9960a044 52 }
donatien 0:2ccb9960a044 53 m_keys[m_count] = key;
donatien 0:2ccb9960a044 54 m_values[m_count] = value;
donatien 0:2ccb9960a044 55 m_count++;
donatien 0:2ccb9960a044 56 }
donatien 0:2ccb9960a044 57
donatien 0:2ccb9960a044 58 void HTTPMap::clear()
donatien 0:2ccb9960a044 59 {
donatien 0:2ccb9960a044 60 m_count = 0;
donatien 0:2ccb9960a044 61 m_pos = 0;
donatien 0:2ccb9960a044 62 }
donatien 0:2ccb9960a044 63
donatien 16:1f743885e7de 64 /*virtual*/ void HTTPMap::readReset()
donatien 16:1f743885e7de 65 {
donatien 16:1f743885e7de 66 m_pos = 0;
donatien 16:1f743885e7de 67 }
donatien 0:2ccb9960a044 68
donatien 0:2ccb9960a044 69 /*virtual*/ int HTTPMap::read(char* buf, size_t len, size_t* pReadLen)
donatien 0:2ccb9960a044 70 {
donatien 0:2ccb9960a044 71 if(m_pos >= m_count)
donatien 0:2ccb9960a044 72 {
donatien 0:2ccb9960a044 73 *pReadLen = 0;
donatien 0:2ccb9960a044 74 m_pos = 0;
donatien 0:2ccb9960a044 75 return OK;
donatien 0:2ccb9960a044 76 }
donatien 0:2ccb9960a044 77
donatien 0:2ccb9960a044 78 //URL encode
donatien 0:2ccb9960a044 79 char* out = buf;
donatien 0:2ccb9960a044 80 const char* in = m_keys[m_pos];
donatien 0:2ccb9960a044 81 if( (m_pos != 0) && (out - buf < len - 1) )
donatien 0:2ccb9960a044 82 {
donatien 0:2ccb9960a044 83 *out='&';
donatien 0:2ccb9960a044 84 out++;
donatien 0:2ccb9960a044 85 }
donatien 0:2ccb9960a044 86
donatien 0:2ccb9960a044 87 while( (*in != '\0') && (out - buf < len - 3) )
donatien 0:2ccb9960a044 88 {
donatien 0:2ccb9960a044 89 if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~')
donatien 0:2ccb9960a044 90 {
donatien 0:2ccb9960a044 91 *out = *in;
donatien 0:2ccb9960a044 92 out++;
donatien 0:2ccb9960a044 93 }
donatien 0:2ccb9960a044 94 else if( *in == ' ' )
donatien 0:2ccb9960a044 95 {
donatien 0:2ccb9960a044 96 *out='+';
donatien 0:2ccb9960a044 97 out++;
donatien 0:2ccb9960a044 98 }
donatien 0:2ccb9960a044 99 else
donatien 0:2ccb9960a044 100 {
donatien 0:2ccb9960a044 101 char hex[] = "0123456789abcdef";
donatien 0:2ccb9960a044 102 *out='%';
donatien 0:2ccb9960a044 103 out++;
donatien 0:2ccb9960a044 104 *out=hex[(*in>>4)&0xf];
donatien 0:2ccb9960a044 105 out++;
donatien 0:2ccb9960a044 106 *out=hex[(*in)&0xf];
donatien 0:2ccb9960a044 107 out++;
donatien 0:2ccb9960a044 108 }
donatien 0:2ccb9960a044 109 in++;
donatien 0:2ccb9960a044 110 }
donatien 0:2ccb9960a044 111
donatien 0:2ccb9960a044 112 if( out - buf < len - 1 )
donatien 0:2ccb9960a044 113 {
donatien 0:2ccb9960a044 114 *out='=';
donatien 0:2ccb9960a044 115 out++;
donatien 0:2ccb9960a044 116 }
donatien 0:2ccb9960a044 117
donatien 0:2ccb9960a044 118 in = m_values[m_pos];
donatien 0:2ccb9960a044 119 while( (*in != '\0') && (out - buf < len - 3) )
donatien 0:2ccb9960a044 120 {
donatien 0:2ccb9960a044 121 if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~')
donatien 0:2ccb9960a044 122 {
donatien 0:2ccb9960a044 123 *out = *in;
donatien 0:2ccb9960a044 124 out++;
donatien 0:2ccb9960a044 125 }
donatien 0:2ccb9960a044 126 else if( *in == ' ' )
donatien 0:2ccb9960a044 127 {
donatien 0:2ccb9960a044 128 *out='+';
donatien 0:2ccb9960a044 129 out++;
donatien 0:2ccb9960a044 130 }
donatien 0:2ccb9960a044 131 else
donatien 0:2ccb9960a044 132 {
donatien 0:2ccb9960a044 133 char hex[] = "0123456789abcdef";
donatien 0:2ccb9960a044 134 *out='%';
donatien 0:2ccb9960a044 135 out++;
donatien 0:2ccb9960a044 136 *out=hex[(*in>>4)&0xf];
donatien 0:2ccb9960a044 137 out++;
donatien 0:2ccb9960a044 138 *out=hex[(*in)&0xf];
donatien 0:2ccb9960a044 139 out++;
donatien 0:2ccb9960a044 140 }
donatien 0:2ccb9960a044 141 in++;
donatien 0:2ccb9960a044 142 }
donatien 0:2ccb9960a044 143
donatien 0:2ccb9960a044 144 *pReadLen = out - buf;
donatien 0:2ccb9960a044 145
donatien 0:2ccb9960a044 146 m_pos++;
donatien 0:2ccb9960a044 147 return OK;
donatien 0:2ccb9960a044 148 }
donatien 0:2ccb9960a044 149
donatien 0:2ccb9960a044 150 /*virtual*/ int HTTPMap::getDataType(char* type, size_t maxTypeLen) //Internet media type for Content-Type header
donatien 0:2ccb9960a044 151 {
donatien 0:2ccb9960a044 152 strncpy(type, "application/x-www-form-urlencoded", maxTypeLen-1);
donatien 0:2ccb9960a044 153 type[maxTypeLen-1] = '\0';
donatien 0:2ccb9960a044 154 return OK;
donatien 0:2ccb9960a044 155 }
donatien 0:2ccb9960a044 156
donatien 0:2ccb9960a044 157 /*virtual*/ bool HTTPMap::getIsChunked() //For Transfer-Encoding header
donatien 0:2ccb9960a044 158 {
donatien 0:2ccb9960a044 159 return false; ////Data is computed one key/value pair at a time
donatien 0:2ccb9960a044 160 }
donatien 0:2ccb9960a044 161
donatien 0:2ccb9960a044 162 /*virtual*/ size_t HTTPMap::getDataLen() //For Content-Length header
donatien 0:2ccb9960a044 163 {
donatien 0:2ccb9960a044 164 size_t count = 0;
donatien 0:2ccb9960a044 165 for(size_t i = 0; i< m_count; i++)
donatien 0:2ccb9960a044 166 {
donatien 0:2ccb9960a044 167 //URL encode
donatien 0:2ccb9960a044 168 const char* in = m_keys[i];
donatien 0:2ccb9960a044 169 if( i != 0 )
donatien 0:2ccb9960a044 170 {
donatien 0:2ccb9960a044 171 count++;
donatien 0:2ccb9960a044 172 }
donatien 0:2ccb9960a044 173
donatien 0:2ccb9960a044 174 while( (*in != '\0') )
donatien 0:2ccb9960a044 175 {
donatien 0:2ccb9960a044 176 if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~')
donatien 0:2ccb9960a044 177 {
donatien 0:2ccb9960a044 178 count++;
donatien 0:2ccb9960a044 179 }
donatien 0:2ccb9960a044 180 else if( *in == ' ' )
donatien 0:2ccb9960a044 181 {
donatien 0:2ccb9960a044 182 count++;
donatien 0:2ccb9960a044 183 }
donatien 0:2ccb9960a044 184 else
donatien 0:2ccb9960a044 185 {
donatien 0:2ccb9960a044 186 count+=3;
donatien 0:2ccb9960a044 187 }
donatien 0:2ccb9960a044 188 in++;
donatien 0:2ccb9960a044 189 }
donatien 0:2ccb9960a044 190
donatien 0:2ccb9960a044 191 count ++;
donatien 0:2ccb9960a044 192
donatien 0:2ccb9960a044 193 in = m_values[i];
donatien 0:2ccb9960a044 194 while( (*in != '\0') )
donatien 0:2ccb9960a044 195 {
donatien 0:2ccb9960a044 196 if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~')
donatien 0:2ccb9960a044 197 {
donatien 0:2ccb9960a044 198 count++;
donatien 0:2ccb9960a044 199 }
donatien 0:2ccb9960a044 200 else if( *in == ' ' )
donatien 0:2ccb9960a044 201 {
donatien 0:2ccb9960a044 202 count++;
donatien 0:2ccb9960a044 203 }
donatien 0:2ccb9960a044 204 else
donatien 0:2ccb9960a044 205 {
donatien 0:2ccb9960a044 206 count+=3;
donatien 0:2ccb9960a044 207 }
donatien 0:2ccb9960a044 208 in++;
donatien 0:2ccb9960a044 209 }
donatien 0:2ccb9960a044 210 }
donatien 0:2ccb9960a044 211 return count;
donatien 0:2ccb9960a044 212 }
Patrick Barrett 33:bdd333d3939c 213
Patrick Barrett 33:bdd333d3939c 214
Patrick Barrett 33:bdd333d3939c 215 /*virtual*/ void HTTPMap::writeReset()
Patrick Barrett 33:bdd333d3939c 216 {
Patrick Barrett 33:bdd333d3939c 217 m_pos = 0;
Patrick Barrett 33:bdd333d3939c 218 }
Patrick Barrett 33:bdd333d3939c 219
Patrick Barrett 33:bdd333d3939c 220 /*virtual*/ int HTTPMap::write(const char* buf, size_t len)
Patrick Barrett 33:bdd333d3939c 221 {
Patrick Barrett 33:bdd333d3939c 222 size_t writeLen = MIN(len, m_size - 1 - m_pos);
Patrick Barrett 33:bdd333d3939c 223 memcpy(m_str + m_pos, buf, writeLen);
Patrick Barrett 33:bdd333d3939c 224 m_pos += writeLen;
Patrick Barrett 33:bdd333d3939c 225 m_str[m_pos] = '\0';
Patrick Barrett 33:bdd333d3939c 226 return OK;
Patrick Barrett 33:bdd333d3939c 227 }
Patrick Barrett 33:bdd333d3939c 228
Patrick Barrett 33:bdd333d3939c 229 /*virtual*/ void HTTPMap::setDataType(const char* type) //Internet media type from Content-Type header
Patrick Barrett 33:bdd333d3939c 230 {
Patrick Barrett 33:bdd333d3939c 231
Patrick Barrett 33:bdd333d3939c 232 }
Patrick Barrett 33:bdd333d3939c 233
Patrick Barrett 33:bdd333d3939c 234 /*virtual*/ void HTTPMap::setIsChunked(bool chunked) //From Transfer-Encoding header
Patrick Barrett 33:bdd333d3939c 235 {
Patrick Barrett 33:bdd333d3939c 236
Patrick Barrett 33:bdd333d3939c 237 }
Patrick Barrett 33:bdd333d3939c 238
Patrick Barrett 33:bdd333d3939c 239 /*virtual*/ void HTTPMap::setDataLen(size_t len) //From Content-Length header, or if the transfer is chunked, next chunk length
Patrick Barrett 33:bdd333d3939c 240 {
Patrick Barrett 33:bdd333d3939c 241
Patrick Barrett 33:bdd333d3939c 242 }
Patrick Barrett 33:bdd333d3939c 243
Patrick Barrett 33:bdd333d3939c 244
Patrick Barrett 33:bdd333d3939c 245 bool HTTPMap::pop(char*& key, char*& value)
Patrick Barrett 33:bdd333d3939c 246 {
Patrick Barrett 33:bdd333d3939c 247 size_t j = m_read_pos;
Patrick Barrett 33:bdd333d3939c 248
Patrick Barrett 33:bdd333d3939c 249 key = &m_str[m_read_pos];
Patrick Barrett 33:bdd333d3939c 250 while(m_read_pos < m_size && m_str[m_read_pos] != '=' && m_str[m_read_pos] != '\0')
Patrick Barrett 33:bdd333d3939c 251 {
Patrick Barrett 33:bdd333d3939c 252 m_str[j++] = UrlDecode(m_str, m_read_pos);
Patrick Barrett 33:bdd333d3939c 253 m_read_pos++;
Patrick Barrett 33:bdd333d3939c 254 }
Patrick Barrett 33:bdd333d3939c 255
Patrick Barrett 33:bdd333d3939c 256 if(m_read_pos >= m_size || m_str[m_read_pos] == '\0')
Patrick Barrett 33:bdd333d3939c 257 {
Patrick Barrett 33:bdd333d3939c 258 key = NULL;
Patrick Barrett 33:bdd333d3939c 259 value = NULL;
Patrick Barrett 33:bdd333d3939c 260 return false;
Patrick Barrett 33:bdd333d3939c 261 }
Patrick Barrett 33:bdd333d3939c 262
Patrick Barrett 33:bdd333d3939c 263 m_str[j++] = '\0';
Patrick Barrett 33:bdd333d3939c 264 j = ++m_read_pos;
Patrick Barrett 33:bdd333d3939c 265 value = &m_str[m_read_pos];
Patrick Barrett 33:bdd333d3939c 266
Patrick Barrett 33:bdd333d3939c 267 while(m_read_pos < m_size-1 && m_str[m_read_pos] != '&' && m_str[m_read_pos] != '\0')
Patrick Barrett 33:bdd333d3939c 268 {
Patrick Barrett 33:bdd333d3939c 269 m_str[j++] = UrlDecode(m_str, m_read_pos);
Patrick Barrett 33:bdd333d3939c 270 m_read_pos++;
Patrick Barrett 33:bdd333d3939c 271 }
Patrick Barrett 33:bdd333d3939c 272
Patrick Barrett 33:bdd333d3939c 273 m_str[j++] = '\0';
Patrick Barrett 33:bdd333d3939c 274
Patrick Barrett 33:bdd333d3939c 275 return true;
Patrick Barrett 33:bdd333d3939c 276 }
Patrick Barrett 33:bdd333d3939c 277
Patrick Barrett 33:bdd333d3939c 278
Patrick Barrett 33:bdd333d3939c 279 bool HTTPMap::get(const char* key, char* val_buf, const size_t max)
Patrick Barrett 33:bdd333d3939c 280 {
Patrick Barrett 33:bdd333d3939c 281 size_t i, j = m_read_pos;
Patrick Barrett 33:bdd333d3939c 282
Patrick Barrett 33:bdd333d3939c 283 while(j < m_size && m_str[j] != '\0')
Patrick Barrett 33:bdd333d3939c 284 {
Patrick Barrett 33:bdd333d3939c 285 i = 0;
Patrick Barrett 33:bdd333d3939c 286 while(key[i] == m_str[j] && j < m_size && m_str[j] != '=' && m_str[j] != '\0')
Patrick Barrett 33:bdd333d3939c 287 {
Patrick Barrett 33:bdd333d3939c 288 i++;
Patrick Barrett 33:bdd333d3939c 289 j++;
Patrick Barrett 33:bdd333d3939c 290 }
Patrick Barrett 33:bdd333d3939c 291
Patrick Barrett 33:bdd333d3939c 292 if(m_str[j] == '=')
Patrick Barrett 33:bdd333d3939c 293 {
Patrick Barrett 33:bdd333d3939c 294 j++;
Patrick Barrett 33:bdd333d3939c 295 i = 0;
Patrick Barrett 33:bdd333d3939c 296 while(i < max-1 && j < m_size && m_str[j] != '&' && m_str[j] != '\0')
Patrick Barrett 33:bdd333d3939c 297 {
Patrick Barrett 33:bdd333d3939c 298 val_buf[i++] = UrlDecode(m_str, j);
Patrick Barrett 33:bdd333d3939c 299 j++;
Patrick Barrett 33:bdd333d3939c 300 }
Patrick Barrett 33:bdd333d3939c 301
Patrick Barrett 33:bdd333d3939c 302 val_buf[i] = '\0';
Patrick Barrett 33:bdd333d3939c 303
Patrick Barrett 33:bdd333d3939c 304 return true;
Patrick Barrett 33:bdd333d3939c 305 }
Patrick Barrett 33:bdd333d3939c 306
Patrick Barrett 33:bdd333d3939c 307 while(j < m_size && m_str[j] != '&' && m_str[j] != '\0')
Patrick Barrett 33:bdd333d3939c 308 {
Patrick Barrett 33:bdd333d3939c 309 val_buf[i++] = UrlDecode(m_str, j);
Patrick Barrett 33:bdd333d3939c 310 j++;
Patrick Barrett 33:bdd333d3939c 311 }
Patrick Barrett 33:bdd333d3939c 312
Patrick Barrett 33:bdd333d3939c 313 if(m_str[j] == '&')
Patrick Barrett 33:bdd333d3939c 314 j++;
Patrick Barrett 33:bdd333d3939c 315
Patrick Barrett 33:bdd333d3939c 316 }
Patrick Barrett 33:bdd333d3939c 317
Patrick Barrett 33:bdd333d3939c 318 return false;
Patrick Barrett 33:bdd333d3939c 319 }
Patrick Barrett 33:bdd333d3939c 320
Patrick Barrett 33:bdd333d3939c 321 static char UrlDecode(char* str, size_t& offset)
Patrick Barrett 33:bdd333d3939c 322 {
Patrick Barrett 33:bdd333d3939c 323 char c;
Patrick Barrett 33:bdd333d3939c 324
Patrick Barrett 33:bdd333d3939c 325 if(str[offset] == '%')
Patrick Barrett 33:bdd333d3939c 326 {
Patrick Barrett 33:bdd333d3939c 327 c = HexDecode(str[offset+2]) | (HexDecode(str[offset+1]) << 4);
Patrick Barrett 33:bdd333d3939c 328 offset+=2;
Patrick Barrett 33:bdd333d3939c 329
Patrick Barrett 33:bdd333d3939c 330 if (c == 0)
Patrick Barrett 33:bdd333d3939c 331 {
Patrick Barrett 33:bdd333d3939c 332 return 0x1A; // SUB
Patrick Barrett 33:bdd333d3939c 333 }
Patrick Barrett 33:bdd333d3939c 334
Patrick Barrett 33:bdd333d3939c 335 return c;
Patrick Barrett 33:bdd333d3939c 336 }
Patrick Barrett 33:bdd333d3939c 337 else if(str[offset] == '+')
Patrick Barrett 33:bdd333d3939c 338 {
Patrick Barrett 33:bdd333d3939c 339 return ' ';
Patrick Barrett 33:bdd333d3939c 340 }
Patrick Barrett 33:bdd333d3939c 341 else
Patrick Barrett 33:bdd333d3939c 342 {
Patrick Barrett 33:bdd333d3939c 343 return str[offset];
Patrick Barrett 33:bdd333d3939c 344 }
Patrick Barrett 33:bdd333d3939c 345 }
Patrick Barrett 33:bdd333d3939c 346 static char HexDecode(char c)
Patrick Barrett 33:bdd333d3939c 347 {
Patrick Barrett 33:bdd333d3939c 348 if(c >= '0' && c <= '9')
Patrick Barrett 33:bdd333d3939c 349 {
Patrick Barrett 33:bdd333d3939c 350 return c - '0';
Patrick Barrett 33:bdd333d3939c 351 }
Patrick Barrett 33:bdd333d3939c 352 else if(c >= 'A' && c <= 'F')
Patrick Barrett 33:bdd333d3939c 353 {
Patrick Barrett 33:bdd333d3939c 354 return(c - ('A' - 0xA));
Patrick Barrett 33:bdd333d3939c 355 }
Patrick Barrett 33:bdd333d3939c 356 else if(c >= 'a' && c <= 'f')
Patrick Barrett 33:bdd333d3939c 357 {
Patrick Barrett 33:bdd333d3939c 358 return(c - ('a' - 0xA));
Patrick Barrett 33:bdd333d3939c 359 }
Patrick Barrett 33:bdd333d3939c 360 else
Patrick Barrett 33:bdd333d3939c 361 {
Patrick Barrett 33:bdd333d3939c 362 return 0x00;
Patrick Barrett 33:bdd333d3939c 363 }
Patrick Barrett 33:bdd333d3939c 364 }