/* ========================================
 *
 * Copyright YOUR COMPANY, THE YEAR
 * All Rights Reserved
 * UNPUBLISHED, LICENSED SOFTWARE.
 *
 * CONFIDENTIAL AND PROPRIETARY INFORMATION
 * WHICH IS THE PROPERTY OF your company.
 *
 * ========================================
*/
#include "ff_headers.h"
#include "ff_stdio.h"

// Create a file of size "size" bytes filled with random data seeded with "seed"
void create_big_file(const char *const pathname, size_t size, unsigned seed) {
    int32_t lItems;
    FF_FILE *pxFile;
    
    configASSERT(0 == size % sizeof(int));
    
    srand(seed);
    
	/* Open the file, creating the file if it does not already exist. */
	pxFile = ff_fopen( pathname, "w" );
    if (!pxFile)
        FF_PRINTF("ff_fopen(%s): %s (%d)\r\r\n", pathname, strerror(stdioGET_ERRNO()), -stdioGET_ERRNO());    
	configASSERT( pxFile );
    
    FF_PRINTF("Writing...\n");
    
    size_t i;
    int val;
    for (i = 0; i < size/sizeof(val); ++i) {
        val = rand();   
		lItems = ff_fwrite( &val, sizeof(val), 1, pxFile );
        if (lItems < 1)
            FF_PRINTF("ff_fwrite(%s): %s (%d)\r\r\n", pathname, strerror(stdioGET_ERRNO()), -stdioGET_ERRNO());
		configASSERT( lItems == 1 );
	}
	/* Close the file. */
	ff_fclose( pxFile );
}

// Read a file of size "size" bytes filled with random data seeded with "seed" and verify the data
void check_big_file(const char *const pathname, size_t size, uint32_t seed) {
    int32_t lItems;
    FF_FILE *pxFile;
    
    configASSERT(0 == size % sizeof(int));    
    
    srand(seed);
    
	/* Open the file, creating the file if it does not already exist. */
	pxFile = ff_fopen( pathname, "r" );
    if (!pxFile)
        FF_PRINTF("ff_fopen(%s): %s (%d)\r\r\n", pathname, strerror(stdioGET_ERRNO()), -stdioGET_ERRNO());
	configASSERT( pxFile );
    
    FF_PRINTF("Reading...\n");    
    
    size_t i;
    int val;
    for (i = 0; i < size/sizeof(val); ++i) {
		lItems = ff_fread( &val, sizeof(val), 1, pxFile );
        if (lItems < 1)
            FF_PRINTF("ff_fread(%s): %s (%d)\r\r\n", pathname, strerror(stdioGET_ERRNO()), -stdioGET_ERRNO());        
		configASSERT( lItems == 1 );

		/* Check the buffer is filled with the expected data. */    
        int expected = rand();
        if (val != expected)
            FF_PRINTF("Data mismatch at word %lu: expected=%d val=%d\n", i, expected, val);            
	}
	/* Close the file. */
	ff_fclose( pxFile );
}

void big_file_test(const char *const pathname, size_t size, uint32_t seed) {
    create_big_file(pathname, size, seed);
    check_big_file(pathname, size, seed);    
}

/* [] END OF FILE */