Update mspack, add to premake, and fix missing license. Fixes #1252.

2018-11-23 15:32:14 -06:00
parent 021af14a6e
commit 7226c9e047
12 changed files with 4093 additions and 595 deletions
--- a/third_party/mspack/system.h
+++ b/third_party/mspack/system.h
@@ -0,0 +1,113 @@
+/* This file is part of libmspack.
+ * (C) 2003-2018 Stuart Caie.
+ *
+ * libmspack is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License (LGPL) version 2.1
+ *
+ * For further details, see the file COPYING.LIB distributed with libmspack
+ */
+
+#ifndef MSPACK_SYSTEM_H
+#define MSPACK_SYSTEM_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ensure config.h is read before mspack.h */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <mspack.h>
+
+/* assume <string.h> exists */
+#include <string.h>
+
+/* fix for problem with GCC 4 and glibc (thanks to Ville Skytta)
+ * http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150429
+ */
+#ifdef read
+# undef read
+#endif
+
+/* Old GCCs don't have __func__, but __FUNCTION__:
+ * http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html
+ */
+#if __STDC_VERSION__ < 199901L
+# if __GNUC__ >= 2
+#  define __func__ __FUNCTION__
+# else
+#  define __func__ "<unknown>"
+# endif
+#endif
+
+#if DEBUG
+# include <stdio.h>
+# define D(x) do { printf("%s:%d (%s) ",__FILE__, __LINE__, __func__); \
+                   printf x ; fputc('\n', stdout); fflush(stdout);} while (0);
+#else
+# define D(x)
+#endif
+
+/* CAB supports searching through files over 4GB in size, and the CHM file
+ * format actively uses 64-bit offsets. These can only be fully supported
+ * if the system the code runs on supports large files. If not, the library
+ * will work as normal using only 32-bit arithmetic, but if an offset
+ * greater than 2GB is detected, an error message indicating the library
+ * can't support the file should be printed.
+ */
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# define PRId64 "lld"
+# define PRIu64 "llu"
+# define PRId32 "ld"
+# define PRIu32 "lu"
+#endif
+
+#include <limits.h>
+#if ((defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS >= 64) || \
+     (defined(FILESIZEBITS)      && FILESIZEBITS      >= 64) || \
+     defined(_LARGEFILE_SOURCE) || defined(_LARGEFILE64_SOURCE) || \
+     SIZEOF_OFF_T >= 8)
+# define LARGEFILE_SUPPORT 1
+# define LD PRId64
+# define LU PRIu64
+#else
+extern const char *largefile_msg;
+# define LD PRId32
+# define LU PRIu32
+#endif
+
+/* endian-neutral reading of little-endian data */
+#define __egi32(a,n) ( ((((unsigned char *) a)[n+3]) << 24) | \
+                       ((((unsigned char *) a)[n+2]) << 16) | \
+                       ((((unsigned char *) a)[n+1]) <<  8) | \
+                       ((((unsigned char *) a)[n+0])))
+#define EndGetI64(a) ((((unsigned long long int) __egi32(a,4)) << 32) | \
+                      ((unsigned int) __egi32(a,0)))
+#define EndGetI32(a) __egi32(a,0)
+#define EndGetI16(a) ((((a)[1])<<8)|((a)[0]))
+
+/* endian-neutral reading of big-endian data */
+#define EndGetM32(a) (((((unsigned char *) a)[0]) << 24) | \
+                      ((((unsigned char *) a)[1]) << 16) | \
+                      ((((unsigned char *) a)[2]) <<  8) | \
+                      ((((unsigned char *) a)[3])))
+#define EndGetM16(a) ((((a)[0])<<8)|((a)[1]))
+
+extern struct mspack_system *mspack_default_system;
+
+/* returns the length of a file opened for reading */
+extern int mspack_sys_filelen(struct mspack_system *system,
+                              struct mspack_file *file, off_t *length);
+
+/* validates a system structure */
+extern int mspack_valid_system(struct mspack_system *sys);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif