diff options
Diffstat (limited to 'Stars45/Archive.cpp')
| -rw-r--r-- | Stars45/Archive.cpp | 589 |
1 files changed, 0 insertions, 589 deletions
diff --git a/Stars45/Archive.cpp b/Stars45/Archive.cpp deleted file mode 100644 index 9d859c2..0000000 --- a/Stars45/Archive.cpp +++ /dev/null @@ -1,589 +0,0 @@ -/* Starshatter: The Open Source Project - Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors - Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors - Copyright (c) 1997-2006, Destroyer Studios LLC. - - AUTHOR: John DiCamillo - -*/ - -#include "Types.h" -#include "Archive.h" -#include "Utils.h" - -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <io.h> -#include <stdio.h> -#include <time.h> - -#include "zlib.h" - -// +--------------------------------------------------------------------+ - -int verbose = 1; -int err; - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ - } - -// +--------------------------------------------------------------------+ - -DataArchive::DataArchive(const char* name) -{ - ZeroMemory(this, sizeof(DataArchive)); - - if (name) - LoadDatafile(name); -} - -DataArchive::~DataArchive() -{ - delete [] block_map; - delete [] directory; -} - -// +--------------------------------------------------------------------+ - -void DataArchive::WriteEntry(int index, BYTE* buf) -{ - int f = _open(datafile, _O_RDWR|_O_CREAT|_O_BINARY, _S_IREAD|_S_IWRITE); - - if (f != -1) { - header.dir_size_comp = DirBlocks() * BLOCK_SIZE; - dirbuf = new BYTE[header.dir_size_comp]; - - if (!dirbuf) { - err = Z_MEM_ERROR; - } - - else { - err = compress(dirbuf, &header.dir_size_comp, - (BYTE*) directory, header.nfiles * sizeof(DataEntry)); - CHECK_ERR(err, "compress"); - - header.dir_blocks = Blocks(header.dir_size_comp) * BLOCK_SIZE; - - _lseek(f, 0, SEEK_SET); - _write(f, &header, sizeof(DataHeader)); - _lseek(f, sizeof(DataHeader) + header.dir_offset, SEEK_SET); - _write(f, dirbuf, header.dir_blocks); - - delete [] dirbuf; - dirbuf = 0; - } - - if (buf && directory && directory[index].size_comp) { - _lseek(f, sizeof(DataHeader) + directory[index].offset, SEEK_SET); - _write(f, buf, directory[index].size_comp); - } - _close(f); - } - else - perror("WriteEntry"); -} - -// +--------------------------------------------------------------------+ - -DWORD DataArchive::Blocks(DWORD raw_size) -{ - int full_blocks = raw_size / BLOCK_SIZE; - int part_blocks = (raw_size % BLOCK_SIZE) > 0; - - return full_blocks + part_blocks; -} - -DWORD DataArchive::DirBlocks() -{ - DWORD result = Blocks(header.nfiles * sizeof(DataEntry)); - if (result == 0) result = 1; - return result; -} - -DWORD DataArchive::FileBlocks(int index) -{ - if (index >= 0 && index < (int) header.nfiles && directory) - return Blocks(directory[index].size_comp); - - return 0; -} - -// +--------------------------------------------------------------------+ - -void DataArchive::CreateBlockMap() -{ - delete [] block_map; - block_map = 0; - - if (header.nfiles == 0) return; - - DWORD i,j; - DWORD dir_usage = header.dir_offset + DirBlocks() * BLOCK_SIZE; - DWORD max_usage = dir_usage; - - for (i = 0; i < header.nfiles; i++) { - DWORD last_block = directory[i].offset + FileBlocks(i) * BLOCK_SIZE; - if (last_block > max_usage) - max_usage = last_block; - } - - nblocks = max_usage/BLOCK_SIZE; - block_map = new DWORD[nblocks]; - - if (!block_map) { - nblocks = 0; - } - - else { - ZeroMemory(block_map, nblocks*sizeof(DWORD)); - - DWORD first_block = header.dir_offset/BLOCK_SIZE + - (header.dir_offset%BLOCK_SIZE > 0); - - for (j = 0; j < DirBlocks(); j++) - block_map[first_block+j] = 1; - - for (i = 0; i < header.nfiles; i++) { - DWORD first_block = directory[i].offset/BLOCK_SIZE + - (directory[i].offset%BLOCK_SIZE > 0); - - for (j = 0; j < FileBlocks(i); j++) - block_map[first_block+j] = i+2; - } - } -} - -// +--------------------------------------------------------------------+ - -int DataArchive::FindDataBlocks(int need) -{ - if ((int) (nblocks)-need > 0) { - DWORD start; - int i; - - for (start = 0; start < nblocks-need; start++) { - for (i = 0; block_map[start+i] == 0 && i < need; i++); - - if (i == need) return start*BLOCK_SIZE; - - start += i; - } - } - - return nblocks*BLOCK_SIZE; -} - -// +--------------------------------------------------------------------+ - -void DataArchive::LoadDatafile(const char* name) -{ - if (!name) return; - - delete [] directory; - delete [] block_map; - - ZeroMemory(this, sizeof(DataArchive)); - strncpy_s(datafile, name, NAMELEN-1); - - FILE* f; - fopen_s(&f, datafile, "rb"); - if (f) { - fread(&header, sizeof(DataHeader), 1, f); - - if (header.version != VERSION) { - Print("ERROR: datafile '%s' invalid version '%d'\n", - datafile, header.version); - fclose(f); - ZeroMemory(&header, sizeof(header)); - return; - } - - DWORD len = DirBlocks() * BLOCK_SIZE; - DWORD dirsize = header.nfiles + 64; - - dirbuf = new BYTE[len]; - directory = new DataEntry[dirsize]; - - if (!dirbuf || !directory) { - err = Z_MEM_ERROR; - } - - else { - ZeroMemory(directory, sizeof(DataEntry) * dirsize); - - fseek(f, sizeof(DataHeader) + header.dir_offset, SEEK_SET); - fread(dirbuf, header.dir_size_comp, 1, f); - - int err = uncompress((BYTE*) directory, &len, -#pragma warning(suppress: 6029) - dirbuf, header.dir_size_comp); - if (err != Z_OK) - ZeroMemory(directory, sizeof(DataEntry) * dirsize); - - delete [] dirbuf; - dirbuf = 0; - - CreateBlockMap(); - } - } - else { - Print("Creating Archive '%s'...\n", datafile); - - header.version = VERSION; - header.nfiles = 0; - header.dir_blocks = 0; - header.dir_size_comp = 0; - header.dir_offset = 0; - - nblocks = DirBlocks(); - - delete [] block_map; - block_map = 0; - } -} - -// +--------------------------------------------------------------------+ - -int DataArchive::FindEntry(const char* req_name) -{ - int entry = -1; - - if (req_name && *req_name && directory) { - char path[256]; - int len = strlen(req_name); - - ZeroMemory(path, sizeof(path)); - - for (int c = 0; c < len; c++) { - if (req_name[c] == '\\') - path[c] = '/'; - else - path[c] = req_name[c]; - } - - for (DWORD i = 0; i < header.nfiles; i++) { - if (!_stricmp(directory[i].name, path)) - return i; - } - } - - return entry; -} - -// +--------------------------------------------------------------------+ - -BYTE* DataArchive::CompressEntry(int i) -{ - if (directory && i >= 0 && i < (int) header.nfiles) { - char* name = directory[i].name; - - FILE* f; - fopen_s(&f, name, "rb"); - - if (f) { - fseek(f, 0, SEEK_END); - DWORD len = ftell(f); - fseek(f, 0, SEEK_SET); - - BYTE* buf = new BYTE[len]; - - if (!buf) { - err = Z_MEM_ERROR; - } - - else { - fread(buf, len, 1, f); - fclose(f); - - directory[i].size_orig = len; - - directory[i].size_comp = (int) (len * 1.1); - BYTE* cbuf = new BYTE[directory[i].size_comp]; - - if (!cbuf) { - err = Z_MEM_ERROR; - } - else { - err = compress(cbuf, &directory[i].size_comp, buf, len); - CHECK_ERR(err, "compress"); - } - - delete [] buf; - return cbuf; - } - } - } - - return 0; -} - -// +--------------------------------------------------------------------+ - -int DataArchive::ExpandEntry(int i, BYTE*& buf, bool null_terminate) -{ - DWORD len = 0; - - if (directory && i >= 0 && i < (int) header.nfiles) { - FILE* f; - fopen_s(&f, datafile, "rb"); - - if (f) { - DWORD clen = directory[i].size_comp; - BYTE* cbuf = new BYTE[clen]; - - if (!cbuf) { - err = Z_MEM_ERROR; - } - - else { - fseek(f, sizeof(DataHeader) + directory[i].offset, SEEK_SET); - fread(cbuf, clen, 1, f); - - len = directory[i].size_orig; - - if (null_terminate) { - buf = new BYTE[len+1]; - if (buf) buf[len] = 0; - } - - else { - buf = new BYTE[len]; - } - - if (!buf) { - err = Z_MEM_ERROR; - } - - else { - err = uncompress(buf, &len, cbuf, clen); - if (err != Z_OK) { - delete [] buf; - buf = 0; - } - } - - delete [] cbuf; - fclose(f); - } - } - } - - return len; -} - -// +--------------------------------------------------------------------+ - -int DataArchive::InsertEntry(const char* name) -{ - if (name && *name) { - char path[256]; - DWORD len = strlen(name); - - ZeroMemory(path, sizeof(path)); - - for (DWORD c = 0; c < len; c++) { - if (name[c] == '\\') - path[c] = '/'; - else - path[c] = name[c]; - } - - int dirsize = header.nfiles + 64; - - if (directory && dirsize) { - for (int i = 0; i < dirsize; i++) { - if (directory[i].size_orig == 0) { - ZeroMemory(directory[i].name, NAMELEN); - strncpy_s(directory[i].name, path, NAMELEN); - directory[i].name[NAMELEN-1] = '\0'; - directory[i].size_orig = 1; - - return i; - } - } - } - - DataEntry* dir = new DataEntry[dirsize + 64]; - - if (directory && dirsize) { - ZeroMemory(dir, (dirsize + 64) * sizeof(DataEntry)); - CopyMemory(dir, directory, dirsize * sizeof(DataEntry)); - } - - delete [] directory; - - header.nfiles = dirsize + 64; - directory = dir; - - ZeroMemory(directory[dirsize].name, NAMELEN); - strncpy_s(directory[dirsize].name, path, NAMELEN); - directory[dirsize].name[NAMELEN-1] = '\0'; - directory[dirsize].size_orig = 1; - - return dirsize; - } - - return -1; -} - -// +--------------------------------------------------------------------+ - -void DataArchive::RemoveEntry(int index) -{ - if (directory && index >= 0 && index < (int) header.nfiles) - ZeroMemory(&directory[index], sizeof(DataEntry)); -} - -// +--------------------------------------------------------------------+ - -void DataArchive::Insert(const char* name) -{ - DWORD old_blocks = 0, old_offset = 0, new_blocks = 0; - DWORD old_dir_blocks = 0, old_dir_offset = 0, new_dir_blocks = 0; - int added = 0; - - int index = FindEntry(name); - - if (index < 0) { - old_dir_blocks = DirBlocks(); - old_dir_offset = header.dir_offset; - - index = InsertEntry(name); - - if (index >= (int) header.nfiles) { - header.nfiles = index+1; - added = 1; - } - - new_dir_blocks = DirBlocks(); - - if (new_dir_blocks > old_dir_blocks) { - header.dir_offset = FindDataBlocks(new_dir_blocks); - CreateBlockMap(); - } - } - else { - old_blocks = FileBlocks(index); - old_offset = directory[index].offset; - } - - if (index >= 0) { - DataEntry& e = directory[index]; - - if (verbose) Print(" Inserting: %-16s ", e.name); - - BYTE* buf = CompressEntry(index); - - if (!buf) { - // this is (almost) unrecoverable, - // so we quit before screwing things up: - Print("ERROR: Could not compress %d:%s\n", index, directory[index].name); - exit(1); - } - - new_blocks = FileBlocks(index); - - // the file is new, or got bigger, - // need to find room for the data: - if (new_blocks > old_blocks) { - directory[index].offset = FindDataBlocks(new_blocks); - CreateBlockMap(); - } - - WriteEntry(index, buf); - delete [] buf; - - if (verbose) { - int ratio = (int) (100.0 * (double) e.size_comp / (double) e.size_orig); - Print("%9d => %9d (%2d%%)\n", e.size_orig, e.size_comp, ratio); - } - } - else if (added) - header.nfiles--; -} - -// +--------------------------------------------------------------------+ - -void DataArchive::Extract(const char* name) -{ - int index = FindEntry(name); - - if (!directory || index < 0 || index >= (int) header.nfiles) { - Print("Could not extract '%s', not found\n", name); - return; - } - - BYTE* buf; - ExpandEntry(index, buf); - - FILE* f; - fopen_s(&f, directory[index].name, "wb"); - if (f) { - fwrite(buf, directory[index].size_orig, 1, f); - fclose(f); - } - else - Print("Could not extract '%s', could not open file for writing\n", name); - - delete [] buf; - - if (verbose) Print(" Extracted: %s\n", name); -} - -// +--------------------------------------------------------------------+ - -void DataArchive::Remove(const char* name) -{ - int index = FindEntry(name); - - if (!directory || index < 0 || index >= (int) header.nfiles) { - Print("Could not remove '%s', not found\n", name); - return; - } - - RemoveEntry(index); - WriteEntry(index, 0); - - if (verbose) Print(" Removed: %s\n", name); -} - -// +--------------------------------------------------------------------+ - -void DataArchive::List() -{ - int total_orig = 0; - int total_comp = 0; - - printf("DATAFILE: %s\n", datafile); - printf("Files: %d\n", header.nfiles); //-V576 - printf("\n"); - - if (directory && header.nfiles) { - printf("Index Orig Size Comp Size Ratio Name\n"); - printf("----- --------- --------- ----- ----------------\n"); - - for (DWORD i = 0; i < header.nfiles; i++) { - DataEntry& e = directory[i]; - int ratio = (int) (100.0 * (double) e.size_comp / (double) e.size_orig); - - printf("%5d %9d %9d %2d%% %s\n", i+1, e.size_orig, e.size_comp, ratio, e.name); //-V576 - - total_orig += e.size_orig; - total_comp += e.size_comp; - } - - int total_ratio = (int) (100.0 * (double) total_comp / (double) total_orig); - - printf("----- --------- --------- -----\n"); - printf("TOTAL %9d %9d %2d%%\n\n", total_orig, total_comp, total_ratio); - } -} - - -// +--------------------------------------------------------------------+ - |