/**

 * $Id: testdata.c,v 1.2 2006-08-02 04:13:15 nkeynes Exp $

 * 

 * Test data loader.

 *

 * Copyright (c) 2006 Nathan Keynes.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#include <math.h>

#include "testdata.h"

#define DEFAULT_SIZE 1024

/* get the next 32-byte aligned address that is no less than x */

#define ALIGN_32(x)  ((char *)((((unsigned int)(x))+0x1F)&0xFFFFFFE0))

void free_test_dataset( test_data_t tests ) 

{

    test_data_t next;

    do {

	next = tests->next;

	free(tests);

	tests = next;

    } while( next != NULL );

}

test_data_block_t get_test_data( test_data_t data, char *name )

{

    int i;

    for( i=0; i<MAX_DATA_BLOCKS; i++ ) {

	if( data->item[i].name != NULL &&

	    strcmp(name, data->item[i].name) == 0 ) {

	    return &data->item[i];

	}

    }

    return NULL;

}

void dump_test_dataset( FILE *f, test_data_t dataset )

{

    test_data_t test = dataset;

    int i;

    while( test != NULL ) {

	fprintf( f, "Test: %s\n", test->test_name );

	for( i=0; i<MAX_DATA_BLOCKS; i++ ) {

	    if( test->item[i].name != NULL ) {

		fprintf( f, "Block: %s, %d bytes\n", test->item[i].name, test->item[i].length );

		fwrite_dump( f, test->item[i].data, test->item[i].length );

	    }

	}

	test = test->next;

    }

}

int test_block_compare( test_data_block_t block, char *result, int result_length )

{

    if( block->length != result_length )

	return -1;

    return memcmp( block->data, result, block->length );

}

/**

 * Load a batch of test data from the given IO stream.

 */

test_data_t load_test_dataset( FILE *f )

{

    test_data_t head = NULL;

    test_data_t current = NULL;

    test_data_t last = NULL;

    int current_size = 0;

    int current_block = -1;

    char *current_end = NULL;

    char *dataptr = NULL;

    char buf[512];

    char *line;

    while( fgets(buf, sizeof(buf), f ) != NULL ) {

	line = buf;

	while( isspace(*line) ) /* Trim leading whitespace */

	    line++;

	if( line[0] == '[' ) { /* New test */

	    char *test_name = line+1;

	    char *end = strchr(test_name, ']');

	    if( end != NULL )

		*end = '\0';

	    current_size = DEFAULT_SIZE;

	    test_data_t test = malloc(current_size);

	    memset( test, 0, current_size );

	    dataptr = (char *)(test+1);

	    test->next = NULL;

	    if( head == NULL )

		head = test;

	    if( current != NULL )

		current->next = test;

	    last = current;

	    current = test;

	    current_end = ((char *)test) + current_size;

	    current_block = -1;

	    strcpy( dataptr, test_name );

	    test->test_name = dataptr;

	    dataptr = ALIGN_32(dataptr + strlen(test_name)+1);

	} else if( *line == '#' ) { /* Comment */

	} else {

	    char *equals = strrchr( line, '=' );

	    if( equals != NULL ) {

		char *block_name = line;

		int len;

		char *p = equals;

		*p-- = '\0';

		while( isspace(*p) )

		    *p-- = '\0';

		len = strlen(line)+1;

		if( dataptr + len > current_end ) {

		    current_end += current_size;

		    current_size *= 2;

		    current = realloc(current, current_size );

		    if( last != NULL )

			last->next = current;

		}

		current_block++;

		strcpy( dataptr, block_name );

		current->item[current_block].name = dataptr;

		dataptr = ALIGN_32(dataptr+len);

		current->item[current_block].data = dataptr;

		current->item[current_block].length = 0;

		line = equals+1;

		while( isspace(*line) )

		    line++;

	    } 

	    /* Data */

	    if( current == NULL || current_block == -1 )

		continue;

	    char *p = strtok(line, "\t\r\n ");

	    while( p != NULL ) {

		if( dataptr + 8 > current_end ) {

		    int old_size = current_size;

		    current_end += current_size;

		    current_size *= 2;

		    current = realloc(current, current_size );

		    memset( current + old_size, 0, old_size );

		    if( last != NULL )

			last->next = current;

		}

		int len = strlen(p);

		int datalen = 0;

		char *dot = strchr(p, '.');

		if( dot != NULL ) { /* FP */

		    if( p[len-1] == 'L' ) { /* Ending in L */

			p[len-1] = '\0';

			double d = strtod(p, NULL);

			*((double *)dataptr) = d;

			datalen = 8;

		    } else {

			float f = (float)strtod(p,NULL);

			*((float *)dataptr) = f;

			datalen = 4;

		    }

		} else {

		    unsigned long value = strtoul(p, NULL, 16);

		    if( len == 8 ) {

			*((unsigned int *)dataptr) = value;

			datalen = 4;

		    } else if( len == 4 ) {

			*((unsigned short *)dataptr) = value;

			datalen = 2;

		    } else if( len == 2 ) {

			*((unsigned char *)dataptr) = value;

			datalen = 1;

		    }

		}

		dataptr += datalen;

		current->item[current_block].length += datalen;

		p = strtok(NULL, "\t\r\n ");

	    }

	}

    }

    fclose(f);

    return head;

}