/*
* 2ooM: The Master of Orion II Reverse Engineering Project
* Library for working with LBX archive files.
- * Copyright (C) 2006-2008 Nick Bowler
+ * Copyright (C) 2006-2010 Nick Bowler
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
+#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pack.h"
#include "misc.h"
+#include "error.h"
#include "lbx.h"
#define LBX_MAGIC 0x0000fead
#define LBX_HDR_SIZE 8
-int lbx_errno = 0;
-
struct lbx_state {
char *name;
struct lbx_state *lbx;
if (magic != LBX_MAGIC) {
- lbx_errno = -LBX_EMAGIC;
+ lbx_error_raise(LBX_EMAGIC);
return NULL;
}
lbx = malloc(sizeof *lbx + sizeof lbx->offsets[0] * (nfiles+1));
if (!lbx) {
- lbx_errno = -errno;
+ lbx_error_raise(LBX_ENOMEM);
return NULL;
}
dupname = str_dup(name);
if (!dupname) {
- lbx_errno = -errno;
+ lbx_error_raise(LBX_ENOMEM);
goto err;
}
if (fops->read(hdr_buf, sizeof hdr_buf, f) != sizeof hdr_buf) {
- lbx_errno = -errno;
+ if (fops->eof(f))
+ lbx_error_raise(LBX_EEOF);
goto err;
}
unsigned char buf[4];
if (fops->read(buf, sizeof buf, f) != sizeof buf) {
- lbx_errno = -errno;
if (fops->eof(f))
- lbx_errno = LBX_EEOF;
+ lbx_error_raise(LBX_EEOF);
goto err;
}
return lbx->nfiles;
}
-int lbx_stat(struct lbx_state *lbx, size_t index, struct lbx_statbuf *buf)
+int
+lbx_file_stat(struct lbx_state *lbx, unsigned fileno, struct lbx_statbuf *buf)
{
static char str[256]; /* FIXME */
- if (index >= lbx->nfiles) {
+ if (fileno >= lbx->nfiles) {
+ lbx_error_raise(LBX_ENOENT);
buf->name = NULL;
- lbx_errno = LBX_ERANGE;
return -1;
}
- snprintf(str, sizeof str, "%s.%03zu", lbx->name, index);
+ snprintf(str, sizeof str, "%s.%03u", lbx->name, fileno);
buf->name = str;
- buf->size = lbx->offsets[index+1] - lbx->offsets[index];
+ buf->size = lbx->offsets[fileno+1] - lbx->offsets[fileno];
return 0;
}
struct lbx_file_state *state;
if (fileno >= lbx->nfiles) {
- lbx_errno = LBX_ERANGE;
+ lbx_error_raise(LBX_ENOENT);
return NULL;
}
lbx->last_file = NULL;
if (lbx->fops->seek(lbx->f, lbx->offsets[fileno], SEEK_SET) != 0) {
- lbx_errno = -errno;
return NULL;
}
state = malloc(sizeof *state);
if (!state) {
- lbx_errno = -errno;
+ lbx_error_raise(LBX_ENOMEM);
return NULL;
}
f->lbx->last_file = NULL;
if (fops->seek(f->lbx->f, f->base + pos, SEEK_SET) != 0)
return -1;
+
+ f->offset = pos;
f->lbx->last_file = f;
f->eof = 0;
f->lbx->last_file = NULL;
free(f);
}
-
-const char *lbx_strerror(void)
-{
- if (lbx_errno < 0)
- return strerror(-lbx_errno);
-
- switch (lbx_errno) {
- case LBX_ESUCCESS: return "Success";
- case LBX_EMAGIC: return "Bad magic number";
- case LBX_EEOF: return "Unexpected end-of-file";
- case LBX_ERANGE: return "Index out of range";
- case LBX_EFORMAT: return "Invalid file format";
- }
-
- return "Unknown error";
-}