438 lines
15 KiB
C++
438 lines
15 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <http://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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/*
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*
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* Some simple physfs extensions
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*
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*/
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#ifndef PHYSFSX_H
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#define PHYSFSX_H
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#include <cstddef>
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#include <memory>
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#include <string.h>
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#include <stdarg.h>
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// When PhysicsFS can *easily* be built as a framework on Mac OS X,
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// the framework form will be supported again -kreatordxx
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#if 1 //!(defined(__APPLE__) && defined(__MACH__))
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#include <physfs.h>
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#else
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#include <physfs/physfs.h>
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#endif
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#include "fmtcheck.h"
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#include "dxxsconf.h"
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#include "dxxerror.h"
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#include "vecmat.h"
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#include "byteutil.h"
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#ifdef __cplusplus
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#include "u_mem.h"
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#include "pack.h"
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#include "compiler-array.h"
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#include "compiler-static_assert.h"
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#include "compiler-type_traits.h"
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#ifdef DXX_HAVE_BUILTIN_CONSTANT_P
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#define _DXX_PHYSFS_CHECK_SIZE_CONSTANT(S,v) (__builtin_constant_p((S) > v) && (S) > v)
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#define _DXX_PHYSFS_CHECK_SIZE(S,C,v) _DXX_PHYSFS_CHECK_SIZE_CONSTANT(static_cast<size_t>(S) * static_cast<size_t>(C), v)
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#define DXX_PHYSFS_CHECK_READ_SIZE_OBJECT_SIZE(S,C,v) \
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(void)(__builtin_object_size(v, 1) != static_cast<size_t>(-1) && _DXX_PHYSFS_CHECK_SIZE(S,C,__builtin_object_size(v, 1)) && (DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_overwrite, "read size exceeds element size"), 0))
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#define DXX_PHYSFS_CHECK_READ_SIZE_ARRAY_SIZE(S,C) \
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(void)(_DXX_PHYSFS_CHECK_SIZE(S,C,sizeof(v)) && (DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_overwrite, "read size exceeds array size"), 0))
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#define DXX_PHYSFS_CHECK_WRITE_SIZE_OBJECT_SIZE(S,C,v) \
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(void)(__builtin_object_size(v, 1) != static_cast<size_t>(-1) && _DXX_PHYSFS_CHECK_SIZE(S,C,__builtin_object_size(v, 1)) && (DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_overwrite, "write size exceeds element size"), 0))
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#define DXX_PHYSFS_CHECK_WRITE_ELEMENT_SIZE_CONSTANT(S,C) \
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((void)(dxx_builtin_constant_p(S) || dxx_builtin_constant_p(C) || \
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(DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_nonconstant_size, "array element size is not constant"), 0)))
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#define DXX_PHYSFS_CHECK_WRITE_SIZE_ARRAY_SIZE(S,C) \
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((void)(_DXX_PHYSFS_CHECK_SIZE(S,C,sizeof(v)) && \
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(DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_overread, "write size exceeds array size"), 0)))
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#else
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#define DXX_PHYSFS_CHECK_READ_SIZE_OBJECT_SIZE(S,C,v) ((void)0)
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#define DXX_PHYSFS_CHECK_READ_SIZE_ARRAY_SIZE(S,C) ((void)0)
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#define DXX_PHYSFS_CHECK_WRITE_SIZE_OBJECT_SIZE(S,C,v) ((void)0)
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#define DXX_PHYSFS_CHECK_WRITE_ELEMENT_SIZE_CONSTANT(S,C) ((void)0)
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#define DXX_PHYSFS_CHECK_WRITE_SIZE_ARRAY_SIZE(S,C) ((void)0)
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#endif
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#define DXX_PHYSFS_CHECK_WRITE_CONSTANTS(S,C) \
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((void)(DXX_PHYSFS_CHECK_WRITE_ELEMENT_SIZE_CONSTANT(S,C), \
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DXX_PHYSFS_CHECK_WRITE_SIZE_ARRAY_SIZE(S,C), 0)) \
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template <typename V>
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static inline typename tt::enable_if<tt::is_integral<V>::value, PHYSFS_sint64>::type PHYSFSX_check_read(PHYSFS_file *file, V *v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "non-POD integral value read");
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DXX_PHYSFS_CHECK_READ_SIZE_OBJECT_SIZE(S, C, v);
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return PHYSFS_read(file, v, S, C);
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}
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template <typename V>
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static inline typename tt::enable_if<!tt::is_integral<V>::value, PHYSFS_sint64>::type PHYSFSX_check_read(PHYSFS_file *file, V *v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "non-POD non-integral value read");
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DXX_PHYSFS_CHECK_READ_SIZE_OBJECT_SIZE(S, C, v);
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return PHYSFS_read(file, v, S, C);
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}
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template <typename V>
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static inline typename tt::enable_if<tt::is_array<V>::value, PHYSFS_sint64>::type PHYSFSX_check_read(PHYSFS_file *file, V &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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typedef typename tt::remove_extent<V>::type V0;
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static_assert(tt::is_pod<V0>::value, "C array of non-POD elements read");
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DXX_PHYSFS_CHECK_READ_SIZE_ARRAY_SIZE(S, C);
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return PHYSFSX_check_read(file, &v[0], S, C);
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}
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template <typename V, std::size_t N>
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static inline PHYSFS_sint64 PHYSFSX_check_read(PHYSFS_file *file, array<V, N> &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "C++ array of non-POD elements read");
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DXX_PHYSFS_CHECK_READ_SIZE_ARRAY_SIZE(S, C);
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return PHYSFSX_check_read(file, &v[0], S, C);
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}
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template <typename V, typename D>
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static inline PHYSFS_sint64 PHYSFSX_check_read(PHYSFS_file *file, const std::unique_ptr<V, D> &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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return PHYSFSX_check_read(file, v.get(), S, C);
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}
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template <typename V>
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static inline PHYSFS_sint64 PHYSFSX_check_read(PHYSFS_file *file, const RAIIdmem<V> &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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return PHYSFSX_check_read(file, static_cast<V *>(v), S, C);
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}
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template <typename V>
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static inline typename tt::enable_if<tt::is_integral<V>::value, PHYSFS_sint64>::type PHYSFSX_check_write(PHYSFS_file *file, const V *v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "non-POD integral value written");
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DXX_PHYSFS_CHECK_WRITE_ELEMENT_SIZE_CONSTANT(S,C);
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DXX_PHYSFS_CHECK_WRITE_SIZE_OBJECT_SIZE(S, C, v);
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return PHYSFS_write(file, v, S, C);
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}
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template <typename V>
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static inline typename tt::enable_if<!tt::is_integral<V>::value, PHYSFS_sint64>::type PHYSFSX_check_write(PHYSFS_file *file, const V *v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "non-POD non-integral value written");
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DXX_PHYSFS_CHECK_WRITE_SIZE_OBJECT_SIZE(S, C, v);
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return PHYSFS_write(file, v, S, C);
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}
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template <typename V, std::size_t N>
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static inline typename tt::enable_if<tt::is_array<V>::value, PHYSFS_sint64>::type PHYSFSX_check_write(PHYSFS_file *file, const V (&v)[N], PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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typedef typename tt::remove_extent<V>::type V0;
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static_assert(tt::is_pod<V0>::value, "C array of non-POD elements written");
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DXX_PHYSFS_CHECK_WRITE_CONSTANTS(S,C);
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return PHYSFSX_check_write(file, &v[0], S, C);
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}
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template <typename V, std::size_t N>
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static inline PHYSFS_sint64 PHYSFSX_check_write(PHYSFS_file *file, const array<V, N> &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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static_assert(tt::is_pod<V>::value, "C++ array of non-POD elements written");
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DXX_PHYSFS_CHECK_WRITE_CONSTANTS(S,C);
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return PHYSFSX_check_write(file, &v[0], S, C);
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}
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template <typename T, typename D>
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static inline PHYSFS_sint64 PHYSFSX_check_write(PHYSFS_file *file, const std::unique_ptr<T, D> &p, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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return PHYSFSX_check_write(file, p.get(), S, C);
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}
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template <typename V>
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static inline PHYSFS_sint64 PHYSFSX_check_write(PHYSFS_file *file, const RAIIdmem<V> &v, PHYSFS_uint32 S, PHYSFS_uint32 C)
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{
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return PHYSFSX_check_write(file, static_cast<V *>(v), S, C);
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}
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template <typename V>
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PHYSFS_sint64 PHYSFSX_check_read(PHYSFS_file *file, exact_type<V> v, PHYSFS_uint32 S, PHYSFS_uint32 C) DXX_CXX11_EXPLICIT_DELETE;
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template <typename V>
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PHYSFS_sint64 PHYSFSX_check_write(PHYSFS_file *file, exact_type<V> v, PHYSFS_uint32 S, PHYSFS_uint32 C) DXX_CXX11_EXPLICIT_DELETE;
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template <typename V>
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PHYSFS_sint64 PHYSFSX_check_read(PHYSFS_file *file, V **v, PHYSFS_uint32 S, PHYSFS_uint32 C) DXX_CXX11_EXPLICIT_DELETE;
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template <typename V>
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PHYSFS_sint64 PHYSFSX_check_write(PHYSFS_file *file, V **v, PHYSFS_uint32 S, PHYSFS_uint32 C) DXX_CXX11_EXPLICIT_DELETE;
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#define PHYSFS_read(F,V,S,C) PHYSFSX_check_read(F,V,S,C)
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#define PHYSFS_write(F,V,S,C) PHYSFSX_check_write(F,V,S,C)
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extern void PHYSFSX_init(int argc, char *argv[]);
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static inline PHYSFS_sint16 PHYSFSX_readSXE16(PHYSFS_file *file, int swap)
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{
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PHYSFS_sint16 val;
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PHYSFS_read(file, &val, sizeof(val), 1);
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return swap ? SWAPSHORT(val) : val;
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}
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static inline PHYSFS_sint32 PHYSFSX_readSXE32(PHYSFS_file *file, int swap)
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{
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PHYSFS_sint32 val;
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PHYSFS_read(file, &val, sizeof(val), 1);
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return swap ? SWAPINT(val) : val;
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}
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static inline int PHYSFSX_writeU8(PHYSFS_file *file, PHYSFS_uint8 val)
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{
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return PHYSFS_write(file, &val, 1, 1);
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}
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static inline int PHYSFSX_writeString(PHYSFS_file *file, const char *s)
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{
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return PHYSFS_write(file, s, 1, strlen(s) + 1);
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}
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static inline int PHYSFSX_puts(PHYSFS_file *file, const char *s, size_t len) __attribute_nonnull();
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static inline int PHYSFSX_puts(PHYSFS_file *file, const char *s, size_t len)
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{
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return PHYSFS_write(file, s, 1, len);
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}
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template <size_t len>
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static inline int PHYSFSX_puts_literal(PHYSFS_file *file, const char (&s)[len]) __attribute_nonnull();
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template <size_t len>
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static inline int PHYSFSX_puts_literal(PHYSFS_file *file, const char (&s)[len])
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{
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return PHYSFSX_puts(file, s, len - 1);
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}
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#define PHYSFSX_puts(A1,S,...) (PHYSFSX_puts(A1,S, _dxx_call_puts_parameter2(1, ## __VA_ARGS__, strlen(S))))
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static inline int PHYSFSX_putc(PHYSFS_file *file, int c)
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{
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unsigned char ch = (unsigned char)c;
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if (PHYSFS_write(file, &ch, 1, 1) < 1)
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return -1;
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else
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return (int)c;
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}
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static inline int PHYSFSX_fgetc(PHYSFS_file *const fp)
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{
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unsigned char c;
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if (PHYSFS_read(fp, &c, 1, 1) != 1)
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return EOF;
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return c;
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}
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static inline int PHYSFSX_fseek(PHYSFS_file *fp, long int offset, int where)
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{
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int c, goal_position;
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switch(where)
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{
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case SEEK_SET:
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goal_position = offset;
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break;
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case SEEK_CUR:
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goal_position = PHYSFS_tell(fp) + offset;
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break;
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case SEEK_END:
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goal_position = PHYSFS_fileLength(fp) + offset;
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break;
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default:
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return 1;
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}
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c = PHYSFS_seek(fp, goal_position);
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return !c;
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}
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template <std::size_t N>
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struct PHYSFSX_gets_line_t
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{
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PHYSFSX_gets_line_t() = default;
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PHYSFSX_gets_line_t(const PHYSFSX_gets_line_t &) = delete;
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PHYSFSX_gets_line_t &operator=(const PHYSFSX_gets_line_t &) = delete;
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PHYSFSX_gets_line_t(PHYSFSX_gets_line_t &&) = default;
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PHYSFSX_gets_line_t &operator=(PHYSFSX_gets_line_t &&) = default;
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struct line_t
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{
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char buf[N];
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};
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#ifdef DXX_HAVE_POISON
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/* Force onto heap to improve checker accuracy */
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std::unique_ptr<line_t> m_line;
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decltype(line_t::buf) &line() { return m_line->buf; }
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decltype(line_t::buf) &next()
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{
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m_line.reset(new line_t);
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return line();
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}
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#else
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line_t m_line;
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decltype(line_t::buf) &line() { return m_line.buf; }
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decltype(line_t::buf) &next() { return line(); }
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#endif
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operator decltype(line_t::buf) &() { return line(); }
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operator const decltype(line_t::buf) &() const { return line(); }
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std::size_t size() const { return N; }
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};
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template <>
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struct PHYSFSX_gets_line_t<0>
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{
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std::unique_ptr<char[]> m_line;
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std::size_t m_length;
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PHYSFSX_gets_line_t(std::size_t n) :
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m_line(new char[n]),
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m_length(n)
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{
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}
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char *line() { return m_line.get(); }
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char *next()
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{
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#ifdef DXX_HAVE_POISON
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m_line.reset(new char[m_length]);
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#endif
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return line();
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}
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std::size_t size() const { return m_length; }
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operator const char *() const { return m_line.get(); }
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const char *begin() const { return *this; }
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const char *end() const { return begin() + m_length; }
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operator const void *() const = delete;
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};
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char *PHYSFSX_fgets(char *buf, size_t n, PHYSFS_file *const fp);
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template <std::size_t n>
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static inline char * PHYSFSX_fgets(PHYSFSX_gets_line_t<n> &buf, PHYSFS_file *const fp, std::size_t offset = 0)
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{
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return PHYSFSX_fgets(buf.next() + offset, buf.size() - offset, fp);
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}
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template <size_t n>
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static inline char * PHYSFSX_fgets(char (&buf)[n], PHYSFS_file *const fp)
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{
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return PHYSFSX_fgets(buf, n, fp);
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}
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static inline int PHYSFSX_printf(PHYSFS_file *file, const char *format, ...) __attribute_format_printf(2, 3);
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static inline int PHYSFSX_printf(PHYSFS_file *file, const char *format, ...)
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#define PHYSFSX_printf(A1,F,...) dxx_call_printf_checked(PHYSFSX_printf,PHYSFSX_puts_literal,(A1),(F),##__VA_ARGS__)
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{
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char buffer[1024];
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va_list args;
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va_start(args, format);
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size_t len = vsnprintf(buffer, sizeof(buffer), format, args);
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va_end(args);
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return PHYSFSX_puts(file, buffer, len);
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}
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#define PHYSFSX_writeFix PHYSFS_writeSLE32
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#define PHYSFSX_writeFixAng PHYSFS_writeSLE16
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static inline int PHYSFSX_writeVector(PHYSFS_file *file, const vms_vector &v)
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{
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if (PHYSFSX_writeFix(file, v.x) < 1 ||
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PHYSFSX_writeFix(file, v.y) < 1 ||
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PHYSFSX_writeFix(file, v.z) < 1)
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return 0;
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return 1;
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}
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#define define_read_helper(T,N,F) \
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static inline T N(const char *func, const unsigned line, PHYSFS_file *file) \
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{ \
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T i; \
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if (!(F)(file, &i)) \
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{ \
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(Error)(func, line, "reading " #T " in " #N "() at %lu", (unsigned long)((PHYSFS_tell)(file))); \
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} \
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return i; \
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}
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static inline sbyte PHYSFSX_readS8(PHYSFS_file *file, sbyte *b)
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{
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return (PHYSFS_read(file, b, sizeof(*b), 1) == 1);
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}
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define_read_helper(sbyte, PHYSFSX_readByte, PHYSFSX_readS8);
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#define PHYSFSX_readByte(F) ((PHYSFSX_readByte)(__func__, __LINE__, (F)))
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define_read_helper(int, PHYSFSX_readInt, PHYSFS_readSLE32);
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#define PHYSFSX_readInt(F) ((PHYSFSX_readInt)(__func__, __LINE__, (F)))
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define_read_helper(int16_t, PHYSFSX_readShort, PHYSFS_readSLE16);
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#define PHYSFSX_readShort(F) ((PHYSFSX_readShort)(__func__, __LINE__, (F)))
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define_read_helper(fix, PHYSFSX_readFix, PHYSFS_readSLE32);
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#define PHYSFSX_readFix(F) ((PHYSFSX_readFix)(__func__, __LINE__, (F)))
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define_read_helper(fixang, PHYSFSX_readFixAng, PHYSFS_readSLE16);
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#define PHYSFSX_readFixAng(F) ((PHYSFSX_readFixAng)(__func__, __LINE__, (F)))
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static inline void PHYSFSX_readVector(const char *func, const unsigned line, PHYSFS_file *file, vms_vector &v)
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{
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v.x = (PHYSFSX_readFix)(func, line, file);
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v.y = (PHYSFSX_readFix)(func, line, file);
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v.z = (PHYSFSX_readFix)(func, line, file);
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}
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#define PHYSFSX_readVector(F,V) PHYSFSX_readVector(__func__, __LINE__, (F), (V))
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static inline void PHYSFSX_readAngleVec(const char *func, const unsigned line, vms_angvec *v, PHYSFS_file *file)
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{
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v->p = (PHYSFSX_readFixAng)(func, line, file);
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v->b = (PHYSFSX_readFixAng)(func, line, file);
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v->h = (PHYSFSX_readFixAng)(func, line, file);
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}
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#define PHYSFSX_readAngleVec(V,F) ((PHYSFSX_readAngleVec(__func__, __LINE__, (V), (F))))
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static inline void PHYSFSX_readMatrix(const char *func, const unsigned line, vms_matrix *m,PHYSFS_file *file)
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{
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(PHYSFSX_readVector)(func, line, file, m->rvec);
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(PHYSFSX_readVector)(func, line, file, m->uvec);
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(PHYSFSX_readVector)(func, line, file, m->fvec);
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}
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#define PHYSFSX_readMatrix(M,F) ((PHYSFSX_readMatrix)(__func__, __LINE__, (M), (F)))
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#define PHYSFSX_contfile_init PHYSFSX_addRelToSearchPath
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#define PHYSFSX_contfile_close PHYSFSX_removeRelFromSearchPath
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typedef char file_extension_t[5];
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int PHYSFSX_checkMatchingExtension(const file_extension_t *exts, const char *filename) __attribute_nonnull();
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extern int PHYSFSX_addRelToSearchPath(const char *relname, int add_to_end);
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extern int PHYSFSX_removeRelFromSearchPath(const char *relname);
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extern int PHYSFSX_fsize(const char *hogname);
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extern void PHYSFSX_listSearchPathContent();
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extern int PHYSFSX_checkSupportedArchiveTypes();
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extern int PHYSFSX_getRealPath(const char *stdPath, char *realPath);
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extern int PHYSFSX_isNewPath(const char *path);
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extern int PHYSFSX_rename(const char *oldpath, const char *newpath);
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extern char **PHYSFSX_findFiles(const char *path, const file_extension_t *exts) __attribute_nonnull();
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extern char **PHYSFSX_findabsoluteFiles(const char *path, const char *realpath, const file_extension_t *exts) __attribute_nonnull();
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extern PHYSFS_sint64 PHYSFSX_getFreeDiskSpace();
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extern int PHYSFSX_exists(const char *filename, int ignorecase);
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extern PHYSFS_file *PHYSFSX_openReadBuffered(const char *filename);
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extern PHYSFS_file *PHYSFSX_openWriteBuffered(const char *filename);
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extern void PHYSFSX_addArchiveContent();
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extern void PHYSFSX_removeArchiveContent();
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#endif
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#endif /* PHYSFSX_H */
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