git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/CORTEX_A9_RZ_R7S72100_IAR_DS-5/Source/Full-Demo/File-releated-CLI-commands.c

   1 /*\r
   2     FreeRTOS V8.1.1 - Copyright (C) 2014 Real Time Engineers Ltd.\r
   3     All rights reserved\r
   4 \r
   5     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT\r
   6     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   7 \r
   8     ***************************************************************************\r
   9      *                                                                       *\r
  10      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
  11      *    Complete, revised, and edited pdf reference manuals are also       *\r
  12      *    available.                                                         *\r
  13      *                                                                       *\r
  14      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  15      *    ensuring you get running as quickly as possible and with an        *\r
  16      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  17      *    the FreeRTOS project to continue with its mission of providing     *\r
  18      *    professional grade, cross platform, de facto standard solutions    *\r
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  20      *                                                                       *\r
  21      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  22      *                                                                       *\r
  23      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  24      *                                                                       *\r
  25     ***************************************************************************\r
  26 \r
  27 \r
  28     This file is part of the FreeRTOS distribution.\r
  29 \r
  30     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  31     the terms of the GNU General Public License (version 2) as published by the\r
  32     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  33 \r
  34     >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to\r
  35     distribute a combined work that includes FreeRTOS without being obliged to\r
  36     provide the source code for proprietary components outside of the FreeRTOS\r
  37     kernel.\r
  38 \r
  39     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  40     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  41     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more\r
  42     details. You should have received a copy of the GNU General Public License\r
  43     and the FreeRTOS license exception along with FreeRTOS; if not itcan be\r
  44     viewed here: http://www.freertos.org/a00114.html and also obtained by\r
  45     writing to Real Time Engineers Ltd., contact details for whom are available\r
  46     on the FreeRTOS WEB site.\r
  47 \r
  48     1 tab == 4 spaces!\r
  49 \r
  50     ***************************************************************************\r
  51      *                                                                       *\r
  52      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  53      *    not run, what could be wrong?"                                     *\r
  54      *                                                                       *\r
  55      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  56      *                                                                       *\r
  57     ***************************************************************************\r
  58 \r
  59 \r
  60     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  61     license and Real Time Engineers Ltd. contact details.\r
  62 \r
  63     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  64     including FreeRTOS+Trace - an indispensable productivity tool, and our new\r
  65     fully thread aware and reentrant UDP/IP stack.\r
  66 \r
  67     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  68     Integrity Systems, who sell the code with commercial support,\r
  69     indemnification and middleware, under the OpenRTOS brand.\r
  70 \r
  71     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  72     engineered and independently SIL3 certified version for use in safety and\r
  73     mission critical applications that require provable dependability.\r
  74 */\r
  75 \r
  76 /* FreeRTOS includes. */\r
  77 #include "FreeRTOS.h"\r
  78 #include "task.h"\r
  79 \r
  80 /* Standard includes. */\r
  81 #include <stdint.h>\r
  82 #include <stdio.h>\r
  83 #include <stdlib.h>\r
  84 #include <string.h>\r
  85 \r
  86 /* FreeRTOS+CLI includes. */\r
  87 #include "FreeRTOS_CLI.h"\r
  88 \r
  89 /* File system includes. */\r
  90 #include "fat_sl.h"\r
  91 #include "api_mdriver_ram.h"\r
  92 \r
  93 #ifdef _WINDOWS_\r
  94         #define snprintf _snprintf\r
  95 #endif\r
  96 \r
  97 #define cliNEW_LINE             "\r\n"\r
  98 \r
  99 /*******************************************************************************\r
 100  * See the URL in the comments within main.c for the location of the online\r
 101  * documentation.\r
 102  ******************************************************************************/\r
 103 \r
 104 /*\r
 105  * Print out information on a single file.\r
 106  */\r
 107 static void prvCreateFileInfoString( char *pcBuffer, F_FIND *pxFindStruct );\r
 108 \r
 109 /*\r
 110  * Copies an existing file into a newly created file.\r
 111  */\r
 112 static portBASE_TYPE prvPerformCopy( char *pcSourceFile,\r
 113                                                                         int32_t lSourceFileLength,\r
 114                                                                         char *pcDestinationFile,\r
 115                                                                         char *pxWriteBuffer,\r
 116                                                                         size_t xWriteBufferLen );\r
 117 \r
 118 /*\r
 119  * Implements the DIR command.\r
 120  */\r
 121 static portBASE_TYPE prvDIRCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString );\r
 122 \r
 123 /*\r
 124  * Implements the CD command.\r
 125  */\r
 126 static portBASE_TYPE prvCDCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString );\r
 127 \r
 128 /*\r
 129  * Implements the DEL command.\r
 130  */\r
 131 static portBASE_TYPE prvDELCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString );\r
 132 \r
 133 /*\r
 134  * Implements the TYPE command.\r
 135  */\r
 136 static portBASE_TYPE prvTYPECommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString );\r
 137 \r
 138 /*\r
 139  * Implements the COPY command.\r
 140  */\r
 141 static portBASE_TYPE prvCOPYCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString );\r
 142 \r
 143 /*\r
 144  * Registers the CLI commands that are specific to the files system with the\r
 145  * FreeRTOS+CLI command interpreter.\r
 146  */\r
 147 void vRegisterFileSystemCLICommands( void );\r
 148 \r
 149 /* Structure that defines the DIR command line command, which lists all the\r
 150 files in the current directory. */\r
 151 static const CLI_Command_Definition_t xDIR =\r
 152 {\r
 153         "dir", /* The command string to type. */\r
 154         "\r\ndir:\r\n Lists the files in the current directory\r\n",\r
 155         prvDIRCommand, /* The function to run. */\r
 156         0 /* No parameters are expected. */\r
 157 };\r
 158 \r
 159 /* Structure that defines the CD command line command, which changes the\r
 160 working directory. */\r
 161 static const CLI_Command_Definition_t xCD =\r
 162 {\r
 163         "cd", /* The command string to type. */\r
 164         "\r\ncd <dir name>:\r\n Changes the working directory\r\n",\r
 165         prvCDCommand, /* The function to run. */\r
 166         1 /* One parameter is expected. */\r
 167 };\r
 168 \r
 169 /* Structure that defines the TYPE command line command, which prints the\r
 170 contents of a file to the console. */\r
 171 static const CLI_Command_Definition_t xTYPE =\r
 172 {\r
 173         "type", /* The command string to type. */\r
 174         "\r\ntype <filename>:\r\n Prints file contents to the terminal\r\n",\r
 175         prvTYPECommand, /* The function to run. */\r
 176         1 /* One parameter is expected. */\r
 177 };\r
 178 \r
 179 /* Structure that defines the DEL command line command, which deletes a file. */\r
 180 static const CLI_Command_Definition_t xDEL =\r
 181 {\r
 182         "del", /* The command string to type. */\r
 183         "\r\ndel <filename>:\r\n deletes a file or directory\r\n",\r
 184         prvDELCommand, /* The function to run. */\r
 185         1 /* One parameter is expected. */\r
 186 };\r
 187 \r
 188 /* Structure that defines the COPY command line command, which deletes a file. */\r
 189 static const CLI_Command_Definition_t xCOPY =\r
 190 {\r
 191         "copy", /* The command string to type. */\r
 192         "\r\ncopy <source file> <dest file>:\r\n Copies <source file> to <dest file>\r\n",\r
 193         prvCOPYCommand, /* The function to run. */\r
 194         2 /* Two parameters are expected. */\r
 195 };\r
 196 \r
 197 /*-----------------------------------------------------------*/\r
 198 \r
 199 void vRegisterFileSystemCLICommands( void )\r
 200 {\r
 201         /* Register all the command line commands defined immediately above. */\r
 202         FreeRTOS_CLIRegisterCommand( &xDIR );\r
 203         FreeRTOS_CLIRegisterCommand( &xCD );\r
 204         FreeRTOS_CLIRegisterCommand( &xTYPE );\r
 205         FreeRTOS_CLIRegisterCommand( &xDEL );\r
 206         FreeRTOS_CLIRegisterCommand( &xCOPY );\r
 207 }\r
 208 /*-----------------------------------------------------------*/\r
 209 \r
 210 static portBASE_TYPE prvTYPECommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString )\r
 211 {\r
 212 const char *pcParameter;\r
 213 portBASE_TYPE xParameterStringLength, xReturn = pdTRUE;\r
 214 static F_FILE *pxFile = NULL;\r
 215 int iChar;\r
 216 size_t xByte;\r
 217 size_t xColumns = 50U;\r
 218 \r
 219         /* Ensure there is always a null terminator after each character written. */\r
 220         memset( pcWriteBuffer, 0x00, xWriteBufferLen );\r
 221 \r
 222         /* Ensure the buffer leaves space for the \r\n. */\r
 223         configASSERT( xWriteBufferLen > ( strlen( cliNEW_LINE ) * 2 ) );\r
 224         xWriteBufferLen -= strlen( cliNEW_LINE );\r
 225 \r
 226         if( xWriteBufferLen < xColumns )\r
 227         {\r
 228                 /* Ensure the loop that uses xColumns as an end condition does not\r
 229                 write off the end of the buffer. */\r
 230                 xColumns = xWriteBufferLen;\r
 231         }\r
 232 \r
 233         if( pxFile == NULL )\r
 234         {\r
 235                 /* The file has not been opened yet.  Find the file name. */\r
 236                 pcParameter = FreeRTOS_CLIGetParameter\r
 237                                                                 (\r
 238                                                                         pcCommandString,                /* The command string itself. */\r
 239                                                                         1,                                              /* Return the first parameter. */\r
 240                                                                         &xParameterStringLength /* Store the parameter string length. */\r
 241                                                                 );\r
 242 \r
 243                 /* Sanity check something was returned. */\r
 244                 configASSERT( pcParameter );\r
 245 \r
 246                 /* Attempt to open the requested file. */\r
 247                 pxFile = f_open( pcParameter, "r" );\r
 248         }\r
 249 \r
 250         if( pxFile != NULL )\r
 251         {\r
 252                 /* Read the next chunk of data from the file. */\r
 253                 for( xByte = 0; xByte < xColumns; xByte++ )\r
 254                 {\r
 255                         iChar = f_getc( pxFile );\r
 256 \r
 257                         if( iChar == -1 )\r
 258                         {\r
 259                                 /* No more characters to return. */\r
 260                                 f_close( pxFile );\r
 261                                 pxFile = NULL;\r
 262                                 break;\r
 263                         }\r
 264                         else\r
 265                         {\r
 266                                 pcWriteBuffer[ xByte ] = ( char ) iChar;\r
 267                         }\r
 268                 }\r
 269         }\r
 270 \r
 271         if( pxFile == NULL )\r
 272         {\r
 273                 /* Either the file was not opened, or all the data from the file has\r
 274                 been returned and the file is now closed. */\r
 275                 xReturn = pdFALSE;\r
 276         }\r
 277 \r
 278         strcat( pcWriteBuffer, cliNEW_LINE );\r
 279 \r
 280         return xReturn;\r
 281 }\r
 282 /*-----------------------------------------------------------*/\r
 283 \r
 284 static portBASE_TYPE prvCDCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString )\r
 285 {\r
 286 const char *pcParameter;\r
 287 portBASE_TYPE xParameterStringLength;\r
 288 unsigned char ucReturned;\r
 289 size_t xStringLength;\r
 290 \r
 291         /* Obtain the parameter string. */\r
 292         pcParameter = FreeRTOS_CLIGetParameter\r
 293                                                 (\r
 294                                                         pcCommandString,                /* The command string itself. */\r
 295                                                         1,                                              /* Return the first parameter. */\r
 296                                                         &xParameterStringLength /* Store the parameter string length. */\r
 297                                                 );\r
 298 \r
 299         /* Sanity check something was returned. */\r
 300         configASSERT( pcParameter );\r
 301 \r
 302         /* Attempt to move to the requested directory. */\r
 303         ucReturned = f_chdir( pcParameter );\r
 304 \r
 305         if( ucReturned == F_NO_ERROR )\r
 306         {\r
 307                 sprintf( pcWriteBuffer, "In: " );\r
 308                 xStringLength = strlen( pcWriteBuffer );\r
 309                 f_getcwd( &( pcWriteBuffer[ xStringLength ] ), ( unsigned char ) ( xWriteBufferLen - xStringLength ) );\r
 310         }\r
 311         else\r
 312         {\r
 313                 sprintf( pcWriteBuffer, "Error" );\r
 314         }\r
 315 \r
 316         strcat( pcWriteBuffer, cliNEW_LINE );\r
 317 \r
 318         return pdFALSE;\r
 319 }\r
 320 /*-----------------------------------------------------------*/\r
 321 \r
 322 static portBASE_TYPE prvDIRCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString )\r
 323 {\r
 324 static F_FIND *pxFindStruct = NULL;\r
 325 unsigned char ucReturned;\r
 326 portBASE_TYPE xReturn = pdFALSE;\r
 327 \r
 328         /* This assumes pcWriteBuffer is long enough. */\r
 329         ( void ) pcCommandString;\r
 330 \r
 331         /* Ensure the buffer leaves space for the \r\n. */\r
 332         configASSERT( xWriteBufferLen > ( strlen( cliNEW_LINE ) * 2 ) );\r
 333         xWriteBufferLen -= strlen( cliNEW_LINE );\r
 334 \r
 335         if( pxFindStruct == NULL )\r
 336         {\r
 337                 /* This is the first time this function has been executed since the Dir\r
 338                 command was run.  Create the find structure. */\r
 339                 pxFindStruct = ( F_FIND * ) pvPortMalloc( sizeof( F_FIND ) );\r
 340 \r
 341                 if( pxFindStruct != NULL )\r
 342                 {\r
 343                         ucReturned = f_findfirst( "*.*", pxFindStruct );\r
 344 \r
 345                         if( ucReturned == F_NO_ERROR )\r
 346                         {\r
 347                                 prvCreateFileInfoString( pcWriteBuffer, pxFindStruct );\r
 348                                 xReturn = pdPASS;\r
 349                         }\r
 350                         else\r
 351                         {\r
 352                                 snprintf( pcWriteBuffer, xWriteBufferLen, "Error: f_findfirst() failed." );\r
 353                         }\r
 354                 }\r
 355                 else\r
 356                 {\r
 357                         snprintf( pcWriteBuffer, xWriteBufferLen, "Failed to allocate RAM (using heap_4.c will prevent fragmentation)." );\r
 358                 }\r
 359         }\r
 360         else\r
 361         {\r
 362                 /* The find struct has already been created.  Find the next file in\r
 363                 the directory. */\r
 364                 ucReturned = f_findnext( pxFindStruct );\r
 365 \r
 366                 if( ucReturned == F_NO_ERROR )\r
 367                 {\r
 368                         prvCreateFileInfoString( pcWriteBuffer, pxFindStruct );\r
 369                         xReturn = pdPASS;\r
 370                 }\r
 371                 else\r
 372                 {\r
 373                         /* There are no more files.  Free the find structure. */\r
 374                         vPortFree( pxFindStruct );\r
 375                         pxFindStruct = NULL;\r
 376 \r
 377                         /* No string to return. */\r
 378                         pcWriteBuffer[ 0 ] = 0x00;\r
 379                 }\r
 380         }\r
 381 \r
 382         strcat( pcWriteBuffer, cliNEW_LINE );\r
 383 \r
 384         return xReturn;\r
 385 }\r
 386 /*-----------------------------------------------------------*/\r
 387 \r
 388 static portBASE_TYPE prvDELCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString )\r
 389 {\r
 390 const char *pcParameter;\r
 391 portBASE_TYPE xParameterStringLength;\r
 392 unsigned char ucReturned;\r
 393 \r
 394         /* This function assumes xWriteBufferLen is large enough! */\r
 395         ( void ) xWriteBufferLen;\r
 396 \r
 397         /* Obtain the parameter string. */\r
 398         pcParameter = FreeRTOS_CLIGetParameter\r
 399                                                 (\r
 400                                                         pcCommandString,                /* The command string itself. */\r
 401                                                         1,                                              /* Return the first parameter. */\r
 402                                                         &xParameterStringLength /* Store the parameter string length. */\r
 403                                                 );\r
 404 \r
 405         /* Sanity check something was returned. */\r
 406         configASSERT( pcParameter );\r
 407 \r
 408         /* Attempt to delete the file. */\r
 409         ucReturned = f_delete( pcParameter );\r
 410 \r
 411         if( ucReturned == F_NO_ERROR )\r
 412         {\r
 413                 sprintf( pcWriteBuffer, "%s was deleted", pcParameter );\r
 414         }\r
 415         else\r
 416         {\r
 417                 sprintf( pcWriteBuffer, "Error" );\r
 418         }\r
 419 \r
 420         strcat( pcWriteBuffer, cliNEW_LINE );\r
 421 \r
 422         return pdFALSE;\r
 423 }\r
 424 /*-----------------------------------------------------------*/\r
 425 \r
 426 static portBASE_TYPE prvCOPYCommand( char *pcWriteBuffer, size_t xWriteBufferLen, const char *pcCommandString )\r
 427 {\r
 428 char *pcSourceFile, *pcDestinationFile;\r
 429 portBASE_TYPE xParameterStringLength;\r
 430 long lSourceLength, lDestinationLength = 0;\r
 431 \r
 432         /* Obtain the name of the destination file. */\r
 433         pcDestinationFile = ( char * ) FreeRTOS_CLIGetParameter\r
 434                                                         (\r
 435                                                                 pcCommandString,                /* The command string itself. */\r
 436                                                                 2,                                              /* Return the second parameter. */\r
 437                                                                 &xParameterStringLength /* Store the parameter string length. */\r
 438                                                         );\r
 439 \r
 440         /* Sanity check something was returned. */\r
 441         configASSERT( pcDestinationFile );\r
 442 \r
 443         /* Obtain the name of the source file. */\r
 444         pcSourceFile = ( char * ) FreeRTOS_CLIGetParameter\r
 445                                                 (\r
 446                                                         pcCommandString,                /* The command string itself. */\r
 447                                                         1,                                              /* Return the first parameter. */\r
 448                                                         &xParameterStringLength /* Store the parameter string length. */\r
 449                                                 );\r
 450 \r
 451         /* Sanity check something was returned. */\r
 452         configASSERT( pcSourceFile );\r
 453 \r
 454         /* Terminate the string. */\r
 455         pcSourceFile[ xParameterStringLength ] = 0x00;\r
 456 \r
 457         /* See if the source file exists, obtain its length if it does. */\r
 458         lSourceLength = f_filelength( pcSourceFile );\r
 459 \r
 460         if( lSourceLength == 0 )\r
 461         {\r
 462                 sprintf( pcWriteBuffer, "Source file does not exist" );\r
 463         }\r
 464         else\r
 465         {\r
 466                 /* See if the destination file exists. */\r
 467                 lDestinationLength = f_filelength( pcDestinationFile );\r
 468 \r
 469                 if( lDestinationLength != 0 )\r
 470                 {\r
 471                         sprintf( pcWriteBuffer, "Error: Destination file already exists" );\r
 472                 }\r
 473         }\r
 474 \r
 475         /* Continue only if the source file exists and the destination file does\r
 476         not exist. */\r
 477         if( ( lSourceLength != 0 ) && ( lDestinationLength == 0 ) )\r
 478         {\r
 479                 if( prvPerformCopy( pcSourceFile, lSourceLength, pcDestinationFile, pcWriteBuffer, xWriteBufferLen ) == pdPASS )\r
 480                 {\r
 481                         sprintf( pcWriteBuffer, "Copy made" );\r
 482                 }\r
 483                 else\r
 484                 {\r
 485                         sprintf( pcWriteBuffer, "Error during copy" );\r
 486                 }\r
 487         }\r
 488 \r
 489         strcat( pcWriteBuffer, cliNEW_LINE );\r
 490 \r
 491         return pdFALSE;\r
 492 }\r
 493 /*-----------------------------------------------------------*/\r
 494 \r
 495 static portBASE_TYPE prvPerformCopy(    char *pcSourceFile,\r
 496                                                                                 int32_t lSourceFileLength,\r
 497                                                                                 char *pcDestinationFile,\r
 498                                                                                 char *pxWriteBuffer,\r
 499                                                                                 size_t xWriteBufferLen )\r
 500 {\r
 501 int32_t lBytesRead = 0, lBytesToRead, lBytesRemaining;\r
 502 F_FILE *pxFile;\r
 503 portBASE_TYPE xReturn = pdPASS;\r
 504 \r
 505         /* NOTE:  Error handling has been omitted for clarity. */\r
 506 \r
 507         while( lBytesRead < lSourceFileLength )\r
 508         {\r
 509                 /* How many bytes are left? */\r
 510                 lBytesRemaining = lSourceFileLength - lBytesRead;\r
 511 \r
 512                 /* How many bytes should be read this time around the loop.  Can't\r
 513                 read more bytes than will fit into the buffer. */\r
 514                 if( lBytesRemaining > ( long ) xWriteBufferLen )\r
 515                 {\r
 516                         lBytesToRead = ( long ) xWriteBufferLen;\r
 517                 }\r
 518                 else\r
 519                 {\r
 520                         lBytesToRead = lBytesRemaining;\r
 521                 }\r
 522 \r
 523                 /* Open the source file, seek past the data that has already been\r
 524                 read from the file, read the next block of data, then close the\r
 525                 file again so the destination file can be opened. */\r
 526                 pxFile = f_open( pcSourceFile, "r" );\r
 527                 if( pxFile != NULL )\r
 528                 {\r
 529                         f_seek( pxFile, lBytesRead, F_SEEK_SET );\r
 530                         f_read( pxWriteBuffer, lBytesToRead, 1, pxFile );\r
 531                         f_close( pxFile );\r
 532                 }\r
 533                 else\r
 534                 {\r
 535                         xReturn = pdFAIL;\r
 536                         break;\r
 537                 }\r
 538 \r
 539                 /* Open the destination file and write the block of data to the end of\r
 540                 the file. */\r
 541                 pxFile = f_open( pcDestinationFile, "a" );\r
 542                 if( pxFile != NULL )\r
 543                 {\r
 544                         f_write( pxWriteBuffer, lBytesToRead, 1, pxFile );\r
 545                         f_close( pxFile );\r
 546                 }\r
 547                 else\r
 548                 {\r
 549                         xReturn = pdFAIL;\r
 550                         break;\r
 551                 }\r
 552 \r
 553                 lBytesRead += lBytesToRead;\r
 554         }\r
 555 \r
 556         return xReturn;\r
 557 }\r
 558 /*-----------------------------------------------------------*/\r
 559 \r
 560 static void prvCreateFileInfoString( char *pcBuffer, F_FIND *pxFindStruct )\r
 561 {\r
 562 const char *pcWritableFile = "writable file", *pcReadOnlyFile = "read only file", *pcDirectory = "directory";\r
 563 const char * pcAttrib;\r
 564 \r
 565         /* Point pcAttrib to a string that describes the file. */\r
 566         if( ( pxFindStruct->attr & F_ATTR_DIR ) != 0 )\r
 567         {\r
 568                 pcAttrib = pcDirectory;\r
 569         }\r
 570         else if( pxFindStruct->attr & F_ATTR_READONLY )\r
 571         {\r
 572                 pcAttrib = pcReadOnlyFile;\r
 573         }\r
 574         else\r
 575         {\r
 576                 pcAttrib = pcWritableFile;\r
 577         }\r
 578 \r
 579         /* Create a string that includes the file name, the file size and the\r
 580         attributes string. */\r
 581         sprintf( pcBuffer, "%s [%s] [size=%d]", pxFindStruct->filename, pcAttrib, pxFindStruct->filesize );\r
 582 }\r