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Half-finished Daikatana support, list support (pakextract -l)

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* pakextract -l bla.pak lists all the contained files and their sizes
* decompressing compressed files in daikatana .paks still is missing.
This commit is contained in:
Daniel Gibson 2016-04-01 16:24:37 +02:00
parent 080748ed4d
commit d7fa8c2cc2
1 changed files with 107 additions and 26 deletions
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129
pakextract.c
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@ -29,6 +29,14 @@
#include <string.h>
#include <sys/stat.h>
#include <assert.h>
#ifdef DAIKATANA
#define HDR_DIR_LEN 72
#else
#define HDR_DIR_LEN 64
#endif
/* Holds the pak header */
struct
{
@ -42,7 +50,11 @@ struct directory_s
{
char file_name[56];
int file_pos;
int file_length;
int file_length; // in case of is_compressed: size after decompression
#ifdef DAIKATANA
int compressed_length; // size of compressed data in the pak
int is_compressed; // 0: uncompressed, else compressed
#endif
struct directory_s *next;
};
typedef struct directory_s directory;
@ -108,7 +120,7 @@ read_header(FILE *fd)
return -1;
}
if ((header.dir_length % 64) != 0)
if ((header.dir_length % HDR_DIR_LEN) != 0)
{
fprintf(stderr, "Corrupt pak file\n");
return -1;
@ -126,7 +138,7 @@ read_header(FILE *fd)
* holding the pak to be read
*/
directory *
read_directory(FILE *fd)
read_directory(FILE *fd, int listOnly)
{
int i;
directory *head, *cur;
@ -136,16 +148,25 @@ read_directory(FILE *fd)
/* Navigate to the directory */
fseek(fd, header.dir_offset, SEEK_SET);
for (i = 0; i < (header.dir_length / 64); i++)
for (i = 0; i < (header.dir_length / HDR_DIR_LEN); i++)
{
cur = malloc(sizeof(directory));
if (fread(cur, sizeof(directory) - sizeof(directory *), 1, fd) != 1)
if (fread(cur, HDR_DIR_LEN, 1, fd) != 1)
{
perror("Could not read directory entry");
return NULL;
}
if(listOnly)
{
printf("%s (%d bytes", cur->file_name, cur->file_length);
#ifdef DAIKATANA
if(cur->is_compressed) printf(", %d compressed", cur->compressed_length);
#endif
printf(")\n");
}
cur->next = head;
head = cur;
}
@ -153,6 +174,47 @@ read_directory(FILE *fd)
return head;
}
#ifdef DAIKATANA
static void extract_compressed(FILE* in, directory *d)
{
// TODO: implement according to https://gist.github.com/DanielGibson/8bde6241c93e5efe8b75e5e00d0b9858
fprintf(stderr, "## TODO: Implement support for compressed files to extract '%s'!!\n", d->file_name);
}
#endif
static void extract_raw(FILE* in, directory *d)
{
FILE* out = fopen(d->file_name, "w");
if (out == NULL)
{
perror("Could open the outputfile");
return;
}
// just copy the data from the .pak to the output file (in chunks for speed)
int bytes_left = d->file_length;
char buf[2048];
fseek(in, d->file_pos, SEEK_SET);
while(bytes_left >= sizeof(buf))
{
fread(buf, sizeof(buf), 1, in);
fwrite(buf, sizeof(buf), 1, out);
bytes_left -= sizeof(buf);
}
if(bytes_left > 0)
{
fread(buf, bytes_left, 1, in);
fwrite(buf, bytes_left, 1, out);
}
fclose(out);
}
/*
* Extract the files from a pak.
*
@ -165,38 +227,40 @@ read_directory(FILE *fd)
void
extract_files(FILE *fd, directory *d)
{
char b;
directory *old_d;
FILE *out;
int i;
while (d != NULL)
{
mktree(d->file_name);
out = fopen(d->file_name, "w");
if (out == NULL)
#ifdef DAIKATANA
if(d->is_compressed)
{
perror("Could open the outputfile");
return;
extract_compressed(fd, d);
}
fseek(fd, d->file_pos, SEEK_SET);
for (i = 0; i < d->file_length; i++)
else
#endif
{
fread(&b, sizeof(char), 1, fd);
fwrite(&b, sizeof(char), 1, out);
extract_raw(fd, d);
}
fclose(out);
old_d = d;
d = d->next;
free(old_d);
}
}
static void printUsage(const char* argv0)
{
#ifdef DAIKATANA
fprintf(stderr, "Extractor for Daikatana .pak files\n");
#else
fprintf(stderr, "Extractor for Quake/Quake2 (and compatible) .pak files\n");
#endif
fprintf(stderr, "Usage: %s [-l] pakfile\n", argv0);
fprintf(stderr, " -l don't extract, just list contents\n");
}
/*
* A small programm to extract a Quake II pak file.
* The pak file is given as the first an only
@ -209,14 +273,28 @@ main(int argc, char *argv[])
FILE *fd;
/* Correct usage? */
if (argc != 2)
if (argc < 2)
{
fprintf(stderr, "Usage: %s pakfile\n", argv[0]);
printUsage(argv[0]);
exit(-1);
}
int listOnly = 0;
if(strcmp(argv[1], "-l") == 0)
{
if(argc < 3)
{
printUsage(argv[0]);
exit(-1);
}
listOnly = 1;
}
const char* filename = listOnly ? argv[2] : argv[1];
/* Open the pak file */
fd = fopen(argv[1], "r");
fd = fopen(filename, "r");
if (fd == NULL)
{
perror("Could not open the pak file");
@ -231,15 +309,18 @@ main(int argc, char *argv[])
}
/* Read the directory */
d = read_directory(fd);
d = read_directory(fd, listOnly);
if (d == NULL)
{
fclose(fd);
exit(-1);
}
if(!listOnly)
{
/* And now extract the files */
extract_files(fd, d);
}
/* cleanup */
fclose(fd);