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#include "unpacker.h"
Unpacker::Unpacker(char *name) {
_splitString = new char*[16];
_ctx = SDL_RWFromFile(name, "rb");
}
Unpacker::~Unpacker() {
delete _splitString;
SDL_RWclose(_ctx);
SDL_FreeRW(_ctx);
}
Dir *Unpacker::getDir(char *path) {;
int index = 1;
char pth[256];
char name[80];
char *str = "";
if (!path)
return NULL;
_split(path);
SDL_RWseek(_ctx, 2, SEEK_SET);
pth[0] = '/'; pth[1] = '\0';
while (_splitString[index]) {
Uint16 count;
Uint32 hash;
str = _splitString[index];
hash = _hash(str);
count = SDL_ReadLE16(_ctx);
for (int i=0; i<count; i++) {
Uint32 h;
Uint32 offset;
h = SDL_ReadLE32(_ctx);
offset = SDL_ReadLE32(_ctx);
if (hash == h) {
Uint8 size;
Uint32 curPos = SDL_RWtell(_ctx);
SDL_RWseek(_ctx, offset, SEEK_SET);
SDL_RWread(_ctx, &size, 1, 1);
SDL_RWread(_ctx, name, size, 1);
name[size] = '\0';
if (!strcmp(str, name)) {
if (_splitString[index+1]) {
strcat(pth, str);
strcat(pth, "/");
}
break;
} else {
if (i == count-1)
return NULL;
SDL_RWseek(_ctx, curPos, SEEK_SET);
}
}
}
index++;
}
Dir *dir = new Dir;
strcpy(dir->name, str);
strcpy(dir->path, pth);
dir->dirsCount = SDL_ReadLE16(_ctx);
dir->dirsOffset = SDL_RWtell(_ctx);
SDL_RWseek(_ctx, dir->dirsCount*8, SEEK_CUR);
dir->filesCount = SDL_ReadLE16(_ctx);;
dir->filesOffset = SDL_RWtell(_ctx);
return dir;
}
File *Unpacker::getFile(char *path) {
char pth[256];
char nm[80];
int index = 2;
_split(path);
if (!_splitString[1])
return NULL;
if (_splitString[2]) {
strcpy(pth, "/");
strcpy(pth, _splitString[1]);
strcat(pth, "/");
} else {
Dir *dir = getDir("/");
return getFile(dir, _splitString[1]);
}
while (1) {
if (_splitString[index+1]) {;
strcat(pth, _splitString[index]);
strcat(pth, "/");
} else {
strcpy(nm, _splitString[index]);
break;
}
index++;
}
Нашел у себя на диске - старое творенье, когда я был мал и глуп... Распаковщик архива на своего формата на основе zlib.
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