ext-boost/boost/regex/v4/fileiter.hpp
2019-08-24 15:39:04 +02:00

453 lines
11 KiB
C++

/*
*
* Copyright (c) 1998-2002
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE fileiter.hpp
* VERSION see <boost/version.hpp>
* DESCRIPTION: Declares various platform independent file and
* directory iterators, plus binary file input in
* the form of class map_file.
*/
#ifndef BOOST_RE_FILEITER_HPP_INCLUDED
#define BOOST_RE_FILEITER_HPP_INCLUDED
#ifndef BOOST_REGEX_CONFIG_HPP
#include <boost/regex/config.hpp>
#endif
#include <boost/assert.hpp>
#ifndef BOOST_REGEX_NO_FILEITER
#if (defined(__CYGWIN__) || defined(__CYGWIN32__)) && !defined(BOOST_REGEX_NO_W32)
#error "Sorry, can't mix <windows.h> with STL code and gcc compiler: if you ran configure, try again with configure --disable-ms-windows"
#define BOOST_REGEX_FI_WIN32_MAP
#define BOOST_REGEX_FI_POSIX_DIR
#elif (defined(__WIN32__) || defined(_WIN32) || defined(WIN32)) && !defined(BOOST_REGEX_NO_W32)
#define BOOST_REGEX_FI_WIN32_MAP
#define BOOST_REGEX_FI_WIN32_DIR
#else
#define BOOST_REGEX_FI_POSIX_MAP
#define BOOST_REGEX_FI_POSIX_DIR
#endif
#if defined(BOOST_REGEX_FI_WIN32_MAP)||defined(BOOST_REGEX_FI_WIN32_DIR)
#include <windows.h>
#endif
#if defined(BOOST_REGEX_FI_WIN32_DIR)
#include <cstddef>
namespace boost{
namespace BOOST_REGEX_DETAIL_NS{
#ifndef BOOST_NO_ANSI_APIS
typedef WIN32_FIND_DATAA _fi_find_data;
#else
typedef WIN32_FIND_DATAW _fi_find_data;
#endif
typedef HANDLE _fi_find_handle;
} // namespace BOOST_REGEX_DETAIL_NS
} // namespace boost
#define _fi_invalid_handle INVALID_HANDLE_VALUE
#define _fi_dir FILE_ATTRIBUTE_DIRECTORY
#elif defined(BOOST_REGEX_FI_POSIX_DIR)
#include <cstddef>
#include <cstdio>
#include <cctype>
#include <iterator>
#include <list>
#include <cassert>
#include <dirent.h>
#if defined(__SUNPRO_CC)
using std::list;
#endif
#ifndef MAX_PATH
#define MAX_PATH 256
#endif
namespace boost{
namespace BOOST_REGEX_DETAIL_NS{
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
struct _fi_find_data
{
unsigned dwFileAttributes;
char cFileName[MAX_PATH];
};
struct _fi_priv_data;
typedef _fi_priv_data* _fi_find_handle;
#define _fi_invalid_handle 0
#define _fi_dir 1
_fi_find_handle _fi_FindFirstFile(const char* lpFileName, _fi_find_data* lpFindFileData);
bool _fi_FindNextFile(_fi_find_handle hFindFile, _fi_find_data* lpFindFileData);
bool _fi_FindClose(_fi_find_handle hFindFile);
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
} // namespace BOOST_REGEX_DETAIL_NS
} // namespace boost
#ifdef FindFirstFile
#undef FindFirstFile
#endif
#ifdef FindNextFile
#undef FindNextFile
#endif
#ifdef FindClose
#undef FindClose
#endif
#define FindFirstFileA _fi_FindFirstFile
#define FindNextFileA _fi_FindNextFile
#define FindClose _fi_FindClose
#endif
namespace boost{
namespace BOOST_REGEX_DETAIL_NS{
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
#ifdef BOOST_REGEX_FI_WIN32_MAP // win32 mapfile
class BOOST_REGEX_DECL mapfile
{
HANDLE hfile;
HANDLE hmap;
const char* _first;
const char* _last;
public:
typedef const char* iterator;
mapfile(){ hfile = hmap = 0; _first = _last = 0; }
mapfile(const char* file){ hfile = hmap = 0; _first = _last = 0; open(file); }
~mapfile(){ close(); }
void open(const char* file);
void close();
const char* begin(){ return _first; }
const char* end(){ return _last; }
size_t size(){ return _last - _first; }
bool valid(){ return (hfile != 0) && (hfile != INVALID_HANDLE_VALUE); }
};
#else
class BOOST_REGEX_DECL mapfile_iterator;
class BOOST_REGEX_DECL mapfile
{
typedef char* pointer;
std::FILE* hfile;
long int _size;
pointer* _first;
pointer* _last;
mutable std::list<pointer*> condemed;
enum sizes
{
buf_size = 4096
};
void lock(pointer* node)const;
void unlock(pointer* node)const;
public:
typedef mapfile_iterator iterator;
mapfile(){ hfile = 0; _size = 0; _first = _last = 0; }
mapfile(const char* file){ hfile = 0; _size = 0; _first = _last = 0; open(file); }
~mapfile(){ close(); }
void open(const char* file);
void close();
iterator begin()const;
iterator end()const;
unsigned long size()const{ return _size; }
bool valid()const{ return hfile != 0; }
friend class mapfile_iterator;
};
class BOOST_REGEX_DECL mapfile_iterator
{
typedef mapfile::pointer internal_pointer;
internal_pointer* node;
const mapfile* file;
unsigned long offset;
long position()const
{
return file ? ((node - file->_first) * mapfile::buf_size + offset) : 0;
}
void position(long pos)
{
if(file)
{
node = file->_first + (pos / mapfile::buf_size);
offset = pos % mapfile::buf_size;
}
}
public:
typedef std::ptrdiff_t difference_type;
typedef char value_type;
typedef const char* pointer;
typedef const char& reference;
typedef std::random_access_iterator_tag iterator_category;
mapfile_iterator() { node = 0; file = 0; offset = 0; }
mapfile_iterator(const mapfile* f, long arg_position)
{
BOOST_ASSERT(f);
file = f;
node = f->_first + arg_position / mapfile::buf_size;
offset = arg_position % mapfile::buf_size;
file->lock(node);
}
mapfile_iterator(const mapfile_iterator& i)
{
file = i.file;
node = i.node;
offset = i.offset;
if(file)
file->lock(node);
}
~mapfile_iterator()
{
if(file && node)
file->unlock(node);
}
mapfile_iterator& operator = (const mapfile_iterator& i);
char operator* ()const
{
BOOST_ASSERT(node >= file->_first);
BOOST_ASSERT(node < file->_last);
return file ? *(*node + sizeof(int) + offset) : char(0);
}
char operator[] (long off)const
{
mapfile_iterator tmp(*this);
tmp += off;
return *tmp;
}
mapfile_iterator& operator++ ();
mapfile_iterator operator++ (int);
mapfile_iterator& operator-- ();
mapfile_iterator operator-- (int);
mapfile_iterator& operator += (long off)
{
position(position() + off);
return *this;
}
mapfile_iterator& operator -= (long off)
{
position(position() - off);
return *this;
}
friend inline bool operator==(const mapfile_iterator& i, const mapfile_iterator& j)
{
return (i.file == j.file) && (i.node == j.node) && (i.offset == j.offset);
}
friend inline bool operator!=(const mapfile_iterator& i, const mapfile_iterator& j)
{
return !(i == j);
}
friend inline bool operator<(const mapfile_iterator& i, const mapfile_iterator& j)
{
return i.position() < j.position();
}
friend inline bool operator>(const mapfile_iterator& i, const mapfile_iterator& j)
{
return i.position() > j.position();
}
friend inline bool operator<=(const mapfile_iterator& i, const mapfile_iterator& j)
{
return i.position() <= j.position();
}
friend inline bool operator>=(const mapfile_iterator& i, const mapfile_iterator& j)
{
return i.position() >= j.position();
}
friend mapfile_iterator operator + (const mapfile_iterator& i, long off);
friend mapfile_iterator operator + (long off, const mapfile_iterator& i)
{
mapfile_iterator tmp(i);
return tmp += off;
}
friend mapfile_iterator operator - (const mapfile_iterator& i, long off);
friend inline long operator - (const mapfile_iterator& i, const mapfile_iterator& j)
{
return i.position() - j.position();
}
};
#endif
// _fi_sep determines the directory separator, either '\\' or '/'
BOOST_REGEX_DECL extern const char* _fi_sep;
struct file_iterator_ref
{
_fi_find_handle hf;
_fi_find_data _data;
long count;
};
class BOOST_REGEX_DECL file_iterator
{
char* _root;
char* _path;
char* ptr;
file_iterator_ref* ref;
public:
typedef std::ptrdiff_t difference_type;
typedef const char* value_type;
typedef const char** pointer;
typedef const char*& reference;
typedef std::input_iterator_tag iterator_category;
file_iterator();
file_iterator(const char* wild);
~file_iterator();
file_iterator(const file_iterator&);
file_iterator& operator=(const file_iterator&);
const char* root()const { return _root; }
const char* path()const { return _path; }
const char* name()const { return ptr; }
_fi_find_data* data() { return &(ref->_data); }
void next();
file_iterator& operator++() { next(); return *this; }
file_iterator operator++(int);
const char* operator*() { return path(); }
friend inline bool operator == (const file_iterator& f1, const file_iterator& f2)
{
return ((f1.ref->hf == _fi_invalid_handle) && (f2.ref->hf == _fi_invalid_handle));
}
friend inline bool operator != (const file_iterator& f1, const file_iterator& f2)
{
return !(f1 == f2);
}
};
// dwa 9/13/00 - suppress unused parameter warning
inline bool operator < (const file_iterator&, const file_iterator&)
{
return false;
}
class BOOST_REGEX_DECL directory_iterator
{
char* _root;
char* _path;
char* ptr;
file_iterator_ref* ref;
public:
typedef std::ptrdiff_t difference_type;
typedef const char* value_type;
typedef const char** pointer;
typedef const char*& reference;
typedef std::input_iterator_tag iterator_category;
directory_iterator();
directory_iterator(const char* wild);
~directory_iterator();
directory_iterator(const directory_iterator& other);
directory_iterator& operator=(const directory_iterator& other);
const char* root()const { return _root; }
const char* path()const { return _path; }
const char* name()const { return ptr; }
_fi_find_data* data() { return &(ref->_data); }
void next();
directory_iterator& operator++() { next(); return *this; }
directory_iterator operator++(int);
const char* operator*() { return path(); }
static const char* separator() { return _fi_sep; }
friend inline bool operator == (const directory_iterator& f1, const directory_iterator& f2)
{
return ((f1.ref->hf == _fi_invalid_handle) && (f2.ref->hf == _fi_invalid_handle));
}
friend inline bool operator != (const directory_iterator& f1, const directory_iterator& f2)
{
return !(f1 == f2);
}
};
inline bool operator < (const directory_iterator&, const directory_iterator&)
{
return false;
}
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
} // namespace BOOST_REGEX_DETAIL_NS
using boost::BOOST_REGEX_DETAIL_NS::directory_iterator;
using boost::BOOST_REGEX_DETAIL_NS::file_iterator;
using boost::BOOST_REGEX_DETAIL_NS::mapfile;
} // namespace boost
#endif // BOOST_REGEX_NO_FILEITER
#endif // BOOST_RE_FILEITER_HPP