#include <string.h>

#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#include <stdio.h>
#define polarssl_exit       exit
#define polarssl_free       free
#define polarssl_malloc     malloc
#define polarssl_fprintf    fprintf
#define polarssl_printf     printf
#endif

#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
#include "polarssl/memory_buffer_alloc.h"
#endif

static int test_errors = 0;

SUITE_PRE_DEP
#define TEST_SUITE_ACTIVE

static int test_assert( int correct, const char *test )
{
    if( correct )
        return( 0 );

    test_errors++;
    if( test_errors == 1 )
        polarssl_printf( "FAILED\n" );
    polarssl_printf( "  %s\n", test );

    return( 1 );
}

#define TEST_ASSERT( TEST )                         \
        do { test_assert( (TEST) ? 1 : 0, #TEST );  \
             if( test_errors) goto exit;            \
        } while (0)

int verify_string( char **str )
{
    if( (*str)[0] != '"' ||
        (*str)[strlen( *str ) - 1] != '"' )
    {
        polarssl_printf( "Expected string (with \"\") for parameter and got: %s\n", *str );
        return( -1 );
    }

    (*str)++;
    (*str)[strlen( *str ) - 1] = '\0';

    return( 0 );
}

int verify_int( char *str, int *value )
{
    size_t i;
    int minus = 0;
    int digits = 1;
    int hex = 0;

    for( i = 0; i < strlen( str ); i++ )
    {
        if( i == 0 && str[i] == '-' )
        {
            minus = 1;
            continue;
        }

        if( ( ( minus && i == 2 ) || ( !minus && i == 1 ) ) &&
            str[i - 1] == '0' && str[i] == 'x' )
        {
            hex = 1;
            continue;
        }

        if( ! ( ( str[i] >= '0' && str[i] <= '9' ) ||
                ( hex && ( ( str[i] >= 'a' && str[i] <= 'f' ) ||
                           ( str[i] >= 'A' && str[i] <= 'F' ) ) ) ) )
        {
            digits = 0;
            break;
        }
    }

    if( digits )
    {
        if( hex )
            *value = strtol( str, NULL, 16 );
        else
            *value = strtol( str, NULL, 10 );

        return( 0 );
    }

MAPPING_CODE

    polarssl_printf( "Expected integer for parameter and got: %s\n", str );
    return( -1 );
}

FUNCTION_CODE
SUITE_POST_DEP

int dep_check( char *str )
{
    if( str == NULL )
        return( 1 );

DEP_CHECK_CODE

    return( 1 );
}

int dispatch_test(int cnt, char *params[50])
{
    int ret;
    ((void) cnt);
    ((void) params);

#if defined(TEST_SUITE_ACTIVE)
DISPATCH_FUNCTION
    {
        polarssl_fprintf( stdout, "FAILED\nSkipping unknown test function '%s'\n", params[0] );
        fflush( stdout );
        return( 1 );
    }
#else
    return( 3 );
#endif
    return( ret );
}

/** Retrieve one input line into buf, which must have room for len
 * bytes. The trailing line break (if any) is stripped from the result.
 * Lines beginning with the character '#' are skipped. Lines that are
 * more than len-1 bytes long including the trailing line break are
 * truncated; note that the following bytes remain in the input stream.
 *
 * \return 0 on success, -1 on error or end of file
 */
int get_line( FILE *f, char *buf, size_t len )
{
    char *ret;

    do
    {
        ret = fgets( buf, len, f );
        if( ret == NULL )
            return( -1 );
    }
    while( buf[0] == '#' );

    ret = buf + strlen( buf );
    if( ret-- > buf && *ret == '\n' )
        *ret = '\0';
    if( ret-- > buf && *ret == '\r' )
        *ret = '\0';

    return( 0 );
}

int parse_arguments( char *buf, size_t len, char *params[50] )
{
    int cnt = 0, i;
    char *cur = buf;
    char *p = buf, *q;

    params[cnt++] = cur;

    while( *p != '\0' && p < buf + len )
    {
        if( *p == '\\' )
        {
            p++;
            p++;
            continue;
        }
        if( *p == ':' )
        {
            if( p + 1 < buf + len )
            {
                cur = p + 1;
                params[cnt++] = cur;
            }
            *p = '\0';
        }

        p++;
    }

    // Replace newlines, question marks and colons in strings
    for( i = 0; i < cnt; i++ )
    {
        p = params[i];
        q = params[i];

        while( *p != '\0' )
        {
            if( *p == '\\' && *(p + 1) == 'n' )
            {
                p += 2;
                *(q++) = '\n';
            }
            else if( *p == '\\' && *(p + 1) == ':' )
            {
                p += 2;
                *(q++) = ':';
            }
            else if( *p == '\\' && *(p + 1) == '?' )
            {
                p += 2;
                *(q++) = '?';
            }
            else
                *(q++) = *(p++);
        }
        *q = '\0';
    }

    return( cnt );
}

int main()
{
    int ret, i, cnt, total_errors = 0, total_tests = 0, total_skipped = 0;
    const char *filename = "TEST_FILENAME";
    FILE *file;
    char buf[5000];
    char *params[50];

#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
    unsigned char alloc_buf[1000000];
    memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
#endif

    file = fopen( filename, "r" );
    if( file == NULL )
    {
        polarssl_fprintf( stderr, "Failed to open\n" );
        return( 1 );
    }

    while( !feof( file ) )
    {
        int skip = 0;

        if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
            break;
        polarssl_fprintf( stdout, "%s%.66s", test_errors ? "\n" : "", buf );
        polarssl_fprintf( stdout, " " );
        for( i = strlen( buf ) + 1; i < 67; i++ )
            polarssl_fprintf( stdout, "." );
        polarssl_fprintf( stdout, " " );
        fflush( stdout );

        total_tests++;

        if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
            break;
        cnt = parse_arguments( buf, strlen(buf), params );

        if( strcmp( params[0], "depends_on" ) == 0 )
        {
            for( i = 1; i < cnt; i++ )
                if( dep_check( params[i] ) != 0 )
                    skip = 1;

            if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
                break;
            cnt = parse_arguments( buf, strlen(buf), params );
        }

        if( skip == 0 )
        {
            test_errors = 0;
            ret = dispatch_test( cnt, params );
        }

        if( skip == 1 || ret == 3 )
        {
            total_skipped++;
            polarssl_fprintf( stdout, "----\n" );
            fflush( stdout );
        }
        else if( ret == 0 && test_errors == 0 )
        {
            polarssl_fprintf( stdout, "PASS\n" );
            fflush( stdout );
        }
        else if( ret == 2 )
        {
            polarssl_fprintf( stderr, "FAILED: FATAL PARSE ERROR\n" );
            fclose(file);
            polarssl_exit( 2 );
        }
        else
            total_errors++;

        if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
            break;
        if( strlen(buf) != 0 )
        {
            polarssl_fprintf( stderr, "Should be empty %d\n", (int) strlen(buf) );
            return( 1 );
        }
    }
    fclose(file);

    polarssl_fprintf( stdout, "\n----------------------------------------------------------------------------\n\n");
    if( total_errors == 0 )
        polarssl_fprintf( stdout, "PASSED" );
    else
        polarssl_fprintf( stdout, "FAILED" );

    polarssl_fprintf( stdout, " (%d / %d tests (%d skipped))\n",
             total_tests - total_errors, total_tests, total_skipped );

#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
#if defined(POLARSSL_MEMORY_DEBUG)
    memory_buffer_alloc_status();
#endif
    memory_buffer_alloc_free();
#endif

    return( total_errors != 0 );
}