ceph/src/boost/libs/regex/include/boost/regex/v4/fileiter.hpp

   1 /*
   2  *
   3  * Copyright (c) 1998-2002
   4  * John Maddock
   5  *
   6  * Use, modification and distribution are subject to the
   7  * Boost Software License, Version 1.0. (See accompanying file
   8  * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9  *
  10  */
  11
  12  /*
  13   *   LOCATION:    see http://www.boost.org for most recent version.
  14   *   FILE         fileiter.hpp
  15   *   VERSION      see <boost/version.hpp>
  16   *   DESCRIPTION: Declares various platform independent file and
  17   *                directory iterators, plus binary file input in
  18   *                the form of class map_file.
  19   */
  20
  21 #ifndef BOOST_RE_FILEITER_HPP_INCLUDED
  22 #define BOOST_RE_FILEITER_HPP_INCLUDED
  23
  24 #ifndef BOOST_REGEX_CONFIG_HPP
  25 #include <boost/regex/config.hpp>
  26 #endif
  27 #include <boost/assert.hpp>
  28
  29 #ifndef BOOST_REGEX_NO_FILEITER
  30
  31 #if (defined(__CYGWIN__) || defined(__CYGWIN32__)) && !defined(BOOST_REGEX_NO_W32)
  32 #error "Sorry, can't mix <windows.h> with STL code and gcc compiler: if you ran configure, try again with configure --disable-ms-windows"
  33 #define BOOST_REGEX_FI_WIN32_MAP
  34 #define BOOST_REGEX_FI_POSIX_DIR
  35 #elif (defined(__WIN32__) || defined(_WIN32) || defined(WIN32)) && !defined(BOOST_REGEX_NO_W32)
  36 #define BOOST_REGEX_FI_WIN32_MAP
  37 #define BOOST_REGEX_FI_WIN32_DIR
  38 #else
  39 #define BOOST_REGEX_FI_POSIX_MAP
  40 #define BOOST_REGEX_FI_POSIX_DIR
  41 #endif
  42
  43 #if defined(BOOST_REGEX_FI_WIN32_MAP)||defined(BOOST_REGEX_FI_WIN32_DIR)
  44 #include <windows.h>
  45 #endif
  46
  47 #if defined(BOOST_REGEX_FI_WIN32_DIR)
  48
  49 #include <cstddef>
  50
  51 namespace boost{
  52    namespace BOOST_REGEX_DETAIL_NS{
  53
  54 #ifndef BOOST_NO_ANSI_APIS
  55 typedef WIN32_FIND_DATAA _fi_find_data;
  56 #else
  57 typedef WIN32_FIND_DATAW _fi_find_data;
  58 #endif
  59 typedef HANDLE _fi_find_handle;
  60
  61    } // namespace BOOST_REGEX_DETAIL_NS
  62
  63 } // namespace boost
  64
  65 #define _fi_invalid_handle INVALID_HANDLE_VALUE
  66 #define _fi_dir FILE_ATTRIBUTE_DIRECTORY
  67
  68 #elif defined(BOOST_REGEX_FI_POSIX_DIR)
  69
  70 #include <cstddef>
  71 #include <cstdio>
  72 #include <cctype>
  73 #include <iterator>
  74 #include <list>
  75 #include <cassert>
  76 #include <dirent.h>
  77
  78 #if defined(__SUNPRO_CC)
  79 using std::list;
  80 #endif
  81
  82 #ifndef MAX_PATH
  83 #define MAX_PATH 256
  84 #endif
  85
  86 namespace boost{
  87    namespace BOOST_REGEX_DETAIL_NS{
  88
  89 #ifdef BOOST_HAS_ABI_HEADERS
  90 #  include BOOST_ABI_PREFIX
  91 #endif
  92
  93 struct _fi_find_data
  94 {
  95    unsigned dwFileAttributes;
  96    char cFileName[MAX_PATH];
  97 };
  98
  99 struct _fi_priv_data;
 100
 101 typedef _fi_priv_data* _fi_find_handle;
 102 #define _fi_invalid_handle 0
 103 #define _fi_dir 1
 104
 105 _fi_find_handle _fi_FindFirstFile(const char* lpFileName, _fi_find_data* lpFindFileData);
 106 bool _fi_FindNextFile(_fi_find_handle hFindFile,   _fi_find_data* lpFindFileData);
 107 bool _fi_FindClose(_fi_find_handle hFindFile);
 108
 109 #ifdef BOOST_HAS_ABI_HEADERS
 110 #  include BOOST_ABI_SUFFIX
 111 #endif
 112
 113    } // namespace BOOST_REGEX_DETAIL_NS
 114 } // namespace boost
 115
 116 #ifdef FindFirstFile
 117  #undef FindFirstFile
 118 #endif
 119 #ifdef FindNextFile
 120  #undef FindNextFile
 121 #endif
 122 #ifdef FindClose
 123  #undef FindClose
 124 #endif
 125
 126 #define FindFirstFileA _fi_FindFirstFile
 127 #define FindNextFileA _fi_FindNextFile
 128 #define FindClose _fi_FindClose
 129
 130 #endif
 131
 132 namespace boost{
 133    namespace BOOST_REGEX_DETAIL_NS{
 134
 135 #ifdef BOOST_HAS_ABI_HEADERS
 136 #  include BOOST_ABI_PREFIX
 137 #endif
 138
 139 #ifdef BOOST_REGEX_FI_WIN32_MAP // win32 mapfile
 140
 141 class BOOST_REGEX_DECL mapfile
 142 {
 143    HANDLE hfile;
 144    HANDLE hmap;
 145    const char* _first;
 146    const char* _last;
 147 public:
 148
 149    typedef const char* iterator;
 150
 151    mapfile(){ hfile = hmap = 0; _first = _last = 0; }
 152    mapfile(const char* file){ hfile = hmap = 0; _first = _last = 0; open(file); }
 153    ~mapfile(){ close(); }
 154    void open(const char* file);
 155    void close();
 156    const char* begin(){ return _first; }
 157    const char* end(){ return _last; }
 158    size_t size(){ return _last - _first; }
 159    bool valid(){ return (hfile != 0) && (hfile != INVALID_HANDLE_VALUE); }
 160 };
 161
 162
 163 #else
 164
 165 class BOOST_REGEX_DECL mapfile_iterator;
 166
 167 class BOOST_REGEX_DECL mapfile
 168 {
 169    typedef char* pointer;
 170    std::FILE* hfile;
 171    long int _size;
 172    pointer* _first;
 173    pointer* _last;
 174    mutable std::list<pointer*> condemed;
 175    enum sizes
 176    {
 177       buf_size = 4096
 178    };
 179    void lock(pointer* node)const;
 180    void unlock(pointer* node)const;
 181 public:
 182
 183    typedef mapfile_iterator iterator;
 184
 185    mapfile(){ hfile = 0; _size = 0; _first = _last = 0; }
 186    mapfile(const char* file){ hfile = 0; _size = 0; _first = _last = 0; open(file); }
 187    ~mapfile(){ close(); }
 188    void open(const char* file);
 189    void close();
 190    iterator begin()const;
 191    iterator end()const;
 192    unsigned long size()const{ return _size; }
 193    bool valid()const{ return hfile != 0; }
 194    friend class mapfile_iterator;
 195 };
 196
 197 class BOOST_REGEX_DECL mapfile_iterator
 198 #if !defined(BOOST_NO_STD_ITERATOR) || defined(BOOST_MSVC_STD_ITERATOR)
 199 : public std::iterator<std::random_access_iterator_tag, char>
 200 #endif
 201 {
 202    typedef mapfile::pointer internal_pointer;
 203    internal_pointer* node;
 204    const mapfile* file;
 205    unsigned long offset;
 206    long position()const
 207    {
 208       return file ? ((node - file->_first) * mapfile::buf_size + offset) : 0;
 209    }
 210    void position(long pos)
 211    {
 212       if(file)
 213       {
 214          node = file->_first + (pos / mapfile::buf_size);
 215          offset = pos % mapfile::buf_size;
 216       }
 217    }
 218 public:
 219    typedef std::ptrdiff_t                  difference_type;
 220    typedef char                            value_type;
 221    typedef const char*                     pointer;
 222    typedef const char&                     reference;
 223    typedef std::random_access_iterator_tag iterator_category;
 224
 225    mapfile_iterator() { node = 0; file = 0; offset = 0; }
 226    mapfile_iterator(const mapfile* f, long arg_position)
 227    {
 228       BOOST_ASSERT(f);
 229       file = f;
 230       node = f->_first + arg_position / mapfile::buf_size;
 231       offset = arg_position % mapfile::buf_size;
 232       file->lock(node);
 233    }
 234    mapfile_iterator(const mapfile_iterator& i)
 235    {
 236       file = i.file;
 237       node = i.node;
 238       offset = i.offset;
 239       if(file)
 240          file->lock(node);
 241    }
 242    ~mapfile_iterator()
 243    {
 244       if(file && node)
 245          file->unlock(node);
 246    }
 247    mapfile_iterator& operator = (const mapfile_iterator& i);
 248    char operator* ()const
 249    {
 250       BOOST_ASSERT(node >= file->_first);
 251       BOOST_ASSERT(node < file->_last);
 252       return file ? *(*node + sizeof(int) + offset) : char(0);
 253    }
 254    char operator[] (long off)const
 255    {
 256       mapfile_iterator tmp(*this);
 257       tmp += off;
 258       return *tmp;
 259    }
 260    mapfile_iterator& operator++ ();
 261    mapfile_iterator operator++ (int);
 262    mapfile_iterator& operator-- ();
 263    mapfile_iterator operator-- (int);
 264
 265    mapfile_iterator& operator += (long off)
 266    {
 267       position(position() + off);
 268       return *this;
 269    }
 270    mapfile_iterator& operator -= (long off)
 271    {
 272       position(position() - off);
 273       return *this;
 274    }
 275
 276    friend inline bool operator==(const mapfile_iterator& i, const mapfile_iterator& j)
 277    {
 278       return (i.file == j.file) && (i.node == j.node) && (i.offset == j.offset);
 279    }
 280
 281    friend inline bool operator!=(const mapfile_iterator& i, const mapfile_iterator& j)
 282    {
 283       return !(i == j);
 284    }
 285
 286    friend inline bool operator<(const mapfile_iterator& i, const mapfile_iterator& j)
 287    {
 288       return i.position() < j.position();
 289    }
 290    friend inline bool operator>(const mapfile_iterator& i, const mapfile_iterator& j)
 291    {
 292       return i.position() > j.position();
 293    }
 294    friend inline bool operator<=(const mapfile_iterator& i, const mapfile_iterator& j)
 295    {
 296       return i.position() <= j.position();
 297    }
 298    friend inline bool operator>=(const mapfile_iterator& i, const mapfile_iterator& j)
 299    {
 300       return i.position() >= j.position();
 301    }
 302
 303    friend mapfile_iterator operator + (const mapfile_iterator& i, long off);
 304    friend mapfile_iterator operator + (long off, const mapfile_iterator& i)
 305    {
 306       mapfile_iterator tmp(i);
 307       return tmp += off;
 308    }
 309    friend mapfile_iterator operator - (const mapfile_iterator& i, long off);
 310    friend inline long operator - (const mapfile_iterator& i, const mapfile_iterator& j)
 311    {
 312       return i.position() - j.position();
 313    }
 314 };
 315
 316 #endif
 317
 318 // _fi_sep determines the directory separator, either '\\' or '/'
 319 BOOST_REGEX_DECL extern const char* _fi_sep;
 320
 321 struct file_iterator_ref
 322 {
 323    _fi_find_handle hf;
 324    _fi_find_data _data;
 325    long count;
 326 };
 327
 328
 329 class BOOST_REGEX_DECL file_iterator
 330 {
 331    char* _root;
 332    char* _path;
 333    char* ptr;
 334    file_iterator_ref* ref;
 335
 336 public:
 337    typedef std::ptrdiff_t            difference_type;
 338    typedef const char*               value_type;
 339    typedef const char**              pointer;
 340    typedef const char*&              reference;
 341    typedef std::input_iterator_tag   iterator_category;
 342
 343    file_iterator();
 344    file_iterator(const char* wild);
 345    ~file_iterator();
 346    file_iterator(const file_iterator&);
 347    file_iterator& operator=(const file_iterator&);
 348    const char* root()const { return _root; }
 349    const char* path()const { return _path; }
 350    const char* name()const { return ptr; }
 351    _fi_find_data* data() { return &(ref->_data); }
 352    void next();
 353    file_iterator& operator++() { next(); return *this; }
 354    file_iterator operator++(int);
 355    const char* operator*() { return path(); }
 356
 357    friend inline bool operator == (const file_iterator& f1, const file_iterator& f2)
 358    {
 359       return ((f1.ref->hf == _fi_invalid_handle) && (f2.ref->hf == _fi_invalid_handle));
 360    }
 361
 362    friend inline bool operator != (const file_iterator& f1, const file_iterator& f2)
 363    {
 364       return !(f1 == f2);
 365    }
 366
 367 };
 368
 369 // dwa 9/13/00 - suppress unused parameter warning
 370 inline bool operator < (const file_iterator&, const file_iterator&)
 371 {
 372    return false;
 373 }
 374
 375
 376 class BOOST_REGEX_DECL directory_iterator
 377 {
 378    char* _root;
 379    char* _path;
 380    char* ptr;
 381    file_iterator_ref* ref;
 382
 383 public:
 384    typedef std::ptrdiff_t            difference_type;
 385    typedef const char*               value_type;
 386    typedef const char**              pointer;
 387    typedef const char*&              reference;
 388    typedef std::input_iterator_tag   iterator_category;
 389
 390    directory_iterator();
 391    directory_iterator(const char* wild);
 392    ~directory_iterator();
 393    directory_iterator(const directory_iterator& other);
 394    directory_iterator& operator=(const directory_iterator& other);
 395
 396    const char* root()const { return _root; }
 397    const char* path()const { return _path; }
 398    const char* name()const { return ptr; }
 399    _fi_find_data* data() { return &(ref->_data); }
 400    void next();
 401    directory_iterator& operator++() { next(); return *this; }
 402    directory_iterator operator++(int);
 403    const char* operator*() { return path(); }
 404
 405    static const char* separator() { return _fi_sep; }
 406
 407    friend inline bool operator == (const directory_iterator& f1, const directory_iterator& f2)
 408    {
 409       return ((f1.ref->hf == _fi_invalid_handle) && (f2.ref->hf == _fi_invalid_handle));
 410    }
 411
 412
 413    friend inline bool operator != (const directory_iterator& f1, const directory_iterator& f2)
 414    {
 415       return !(f1 == f2);
 416    }
 417
 418    };
 419
 420 inline bool operator < (const directory_iterator&, const directory_iterator&)
 421 {
 422    return false;
 423 }
 424
 425 #ifdef BOOST_HAS_ABI_HEADERS
 426 #  include BOOST_ABI_SUFFIX
 427 #endif
 428
 429
 430 } // namespace BOOST_REGEX_DETAIL_NS
 431 using boost::BOOST_REGEX_DETAIL_NS::directory_iterator;
 432 using boost::BOOST_REGEX_DETAIL_NS::file_iterator;
 433 using boost::BOOST_REGEX_DETAIL_NS::mapfile;
 434 } // namespace boost
 435
 436 #endif     // BOOST_REGEX_NO_FILEITER
 437 #endif     // BOOST_RE_FILEITER_HPP
 438
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