root/src/blocks/imports.c

DEFINITIONS

1. writeSWFImportBlockToMethod
2. completeSWFImportBlock
3. destroySWFImportBlock
4. cpy
5. newSWFImportBlock

/* $Id: imports.c,v 1.6 2008/09/28 16:54:02 krechert Exp $ */

#ifndef __C2MAN__
#include <stdlib.h>
#include <string.h>
#endif

#include "imports.h"
#include "method.h"
#include "libming.h"

int
writeSWFImportBlockToMethod(SWFBlock block, SWFByteOutputMethod method, void *data)
{       SWFImportBlock imports = (SWFImportBlock) block;
        struct importitem *ip;
        int length, count;
        char *p;
        length = 3 + strlen(imports->filename);
        for(ip = imports->importlist, count = 0 ; ip ; ip = ip->next)
        {       length += 3 + strlen(ip->name);
                count++;
        }

        for(p = imports->filename ; *p ; )
                method(*p++, data);
        method(0, data);

        if(block->swfVersion >= 8)
        {
                method(1, data);
                method(0, data);
        }

        methodWriteUInt16(count, method, data);
        for(ip = imports->importlist ; ip ; ip = ip->next)
        {       methodWriteUInt16(ip->id, method, data);
                for(p = ip->name ; *p ; )
                        method(*p++, data);
                method(0, data);
        }
        return length;
}

int
completeSWFImportBlock(SWFBlock block)
{       SWFImportBlock imports = (SWFImportBlock) block;
        struct importitem *ip;
        int length = 3 + strlen(imports->filename);
        for(ip = imports->importlist ; ip ; ip = ip->next)
                length += 3 + strlen(ip->name);

        /* SWF_IMPORTASSETS is deprecated with version >= 8. */
        if(block->swfVersion >= 8)
        {
                block->type = SWF_IMPORTASSETS2;
                length += 2;
        }       

        return length;
}

void
destroySWFImportBlock(SWFImportBlock importBlock)
{
        struct importitem *ip, *nip;
        if(importBlock->filename)
                free(importBlock->filename);
        for(ip = importBlock->importlist ; ip ; ip = nip)
        {       nip = ip->next;
                if(ip->name)
                        free(ip->name);
                free(ip);
        }
        free(importBlock);
}

static char *cpy(const char *text)
{       char *res, *p;
        p = res = (char *)malloc(strlen(text)+1);
        while((*p++ = *text++))
                ;
        return res;
}

SWFImportBlock
newSWFImportBlock(const char *filename)
{       SWFImportBlock iblock = (SWFImportBlock) malloc(sizeof(struct SWFImportBlock_s));
        
        BLOCK(iblock)->type = SWF_IMPORTASSETS;

        BLOCK(iblock)->writeBlock = (writeSWFBlockMethod) writeSWFImportBlockToMethod;
        BLOCK(iblock)->complete = completeSWFImportBlock;
        BLOCK(iblock)->dtor = (destroySWFBlockMethod) destroySWFImportBlock;
        BLOCK(iblock)->isDefined = 0;
        BLOCK(iblock)->completed = 0;
        iblock->filename = cpy(filename);
        iblock->importlist = NULL;
        return iblock;
}