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variant.c

Shows how to manipulate variant element attribute types.

/*
 * libsgml -- SGML state machine parsing library.
 *                                                                  
 * Copyright (c) 2002 Uninformed Research (http://www.uninformed.org)
 * All rights reserved.
 *
 * skape
 * [email protected]
 */
#include <stdlib.h>
#include <stdio.h>

#include <string.h>

#include "libsgml.h"

int main(int argc, char **argv)
{
        DOM_ELEMENT *element = domElementNew("elmenent");
        unsigned long initial = 57;
        VARIANT_VALUE *value;
        unsigned char binary[] = "\xde\xad\xbe\x0ef AAAA BBBB CCCC DDDD EEEE";

        fprintf(stdout, "Setting the attribute 'example' to '%lu'.\n", initial);

        domElementSetAttributeVariant(element, "example", VARIANT_TYPE_UNSIGNED_INTEGER, &initial, sizeof(unsigned long));

        fprintf(stdout, "'example' as a...\n\n");

        // String
        fprintf(stdout, "string         -> '%s'\n", (const char *)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_STRING));

        // Integers
        fprintf(stdout, "signed long    -> '%li'\n", (signed long)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_SIGNED_INTEGER));
        fprintf(stdout, "unsigned long  -> '%li'\n", (unsigned long)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_UNSIGNED_INTEGER));

        // Shorts
        fprintf(stdout, "signed short   -> '%hi'\n", (signed short)(unsigned long)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_SIGNED_SHORT));
        fprintf(stdout, "unsigned short -> '%hu'\n", (unsigned short)(unsigned long)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_UNSIGNED_SHORT));
        
        fprintf(stdout, "character      -> '%c'\n", (char)(unsigned long)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_CHAR));

        // Float
        value = (VARIANT_VALUE *)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_FLOAT);

        if (value)
                fprintf(stdout, "float          -> '%f'\n", value->flt);

        variantFree(value);

        // Double
        value = (VARIANT_VALUE *)domElementGetAttributeVariant(element, "example", VARIANT_TYPE_DOUBLE);

        if (value)
                fprintf(stdout, "double         -> '%f'\n", value->dbl);

        variantFree(value);
        
        /*
         * Now we'll try our hand at base64 binary manipulation.
         */

        fprintf(stdout, "\nSetting attribute 'binary_b64' to a %d byte buffer.\n\n", sizeof(binary) - 1);

        domElementSetAttributeVariant(element, "binary_b64", VARIANT_TYPE_BINARY_B64, binary, sizeof(binary) - 1);

        // Binary
        value = domElementGetAttributeVariant(element, "binary_b64", VARIANT_TYPE_BINARY_B64);

        if (value)
        {
                int x = 0;

                fprintf(stdout, "binary (%lu)   -> '", value->length);

                for (x = 0; x < value->length; x++)
                {
                        fprintf(stdout,"%.2x", value->binary[x] & 0xFF);

                        if (x+1 != value->length)
                                fprintf(stdout, " ");
                }

                fprintf(stdout, "'\n");
        }

        variantFree(value);

        domNodeDestroy(element);

        return 1;
}

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