summaryrefslogtreecommitdiff
path: root/goo/gfile.h
blob: 2bbf98d2c57c846db7488d50d2a3c95d061d914c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
//========================================================================
//
// gfile.h
//
// Miscellaneous file and directory name manipulation.
//
// Copyright 1996-2003 Glyph & Cog, LLC
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2006 Kristian Høgsberg <krh@redhat.com>
// Copyright (C) 2009, 2011, 2012, 2017, 2018 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>
// Copyright (C) 2013 Adam Reichold <adamreichold@myopera.com>
// Copyright (C) 2013, 2017 Adrian Johnson <ajohnson@redneon.com>
// Copyright (C) 2014 Bogdan Cristea <cristeab@gmail.com>
// Copyright (C) 2014 Peter Breitenlohner <peb@mppmu.mpg.de>
// Copyright (C) 2017 Christoph Cullmann <cullmann@kde.org>
// Copyright (C) 2017 Thomas Freitag <Thomas.Freitag@alfa.de>
// Copyright (C) 2018 Mojca Miklavec <mojca@macports.org>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#ifndef GFILE_H
#define GFILE_H

#include "poppler-config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <time.h>
extern "C" {
#if defined(_WIN32)
#  include <sys/stat.h>
#  ifdef FPTEX
#    include <win32lib.h>
#  else
#    ifndef NOMINMAX
#      define NOMINMAX
#    endif
#    include <windows.h>
#  endif
#elif defined(ACORN)
#elif defined(MACOS)
#  include <ctime.h>
#else
#  include <unistd.h>
#  include <sys/types.h>
#  if defined(VMS)
#    include "vms_dirent.h"
#  elif defined(HAVE_DIRENT_H)
#    include <dirent.h>
#    define NAMLEN(d) strlen((d)->d_name)
#  else
#    define dirent direct
#    define NAMLEN(d) (d)->d_namlen
#    ifdef HAVE_SYS_NDIR_H
#      include <sys/ndir.h>
#    endif
#    ifdef HAVE_SYS_DIR_H
#      include <sys/dir.h>
#    endif
#    ifdef HAVE_NDIR_H
#      include <ndir.h>
#    endif
#  endif
#endif
}
#include "gtypes.h"

class GooString;

/* Integer type for all file offsets and file sizes */
typedef long long Goffset;

//------------------------------------------------------------------------

// Append a file name to a path string.  <path> may be an empty
// string, denoting the current directory).  Returns <path>.
extern GooString *appendToPath(GooString *path, const char *fileName);

// Open a file.  On Windows, this converts the path from UTF-8 to
// UCS-2 and calls _wfopen (if available).  On other OSes, this simply
// calls fopen.
extern FILE *openFile(const char *path, const char *mode);

// Just like fgets, but handles Unix, Mac, and/or DOS end-of-line
// conventions.
extern char *getLine(char *buf, int size, FILE *f);

// Like fseek/ftell but uses platform specific variants that support large files
extern int Gfseek(FILE *f, Goffset offset, int whence);
extern Goffset Gftell(FILE *f);

// Largest offset supported by Gfseek/Gftell
extern Goffset GoffsetMax();

//------------------------------------------------------------------------
// GooFile
//------------------------------------------------------------------------

class GooFile
{
public:
  GooFile(const GooFile &) = delete;
  GooFile& operator=(const GooFile &other) = delete;

  int read(char *buf, int n, Goffset offset) const;
  Goffset size() const;
  
  static GooFile *open(const GooString *fileName);
  
#ifdef _WIN32
  static GooFile *open(const wchar_t *fileName);
  
  ~GooFile() { CloseHandle(handle); }

  // Asuming than on windows you can't change files that are already open
  bool modificationTimeChangedSinceOpen() const;
  
private:
  GooFile(HANDLE handleA);
  HANDLE handle;
  struct _FILETIME modifiedTimeOnOpen;
#else
  ~GooFile() { close(fd); }

  bool modificationTimeChangedSinceOpen() const;
    
private:
  GooFile(int fdA);
  int fd;
  struct timespec modifiedTimeOnOpen;
#endif // _WIN32
};

#endif