|
1765
|
1 /* |
|
|
2 |
|
|
3 Copyright (C) 1996 John W. Eaton |
|
|
4 |
|
|
5 This file is part of Octave. |
|
|
6 |
|
|
7 Octave is free software; you can redistribute it and/or modify it |
|
|
8 under the terms of the GNU General Public License as published by the |
|
|
9 Free Software Foundation; either version 2, or (at your option) any |
|
|
10 later version. |
|
|
11 |
|
|
12 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
15 for more details. |
|
|
16 |
|
|
17 You should have received a copy of the GNU General Public License |
|
|
18 along with Octave; see the file COPYING. If not, write to the Free |
|
|
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
|
20 |
|
|
21 */ |
|
|
22 |
|
|
23 #if !defined (octave_file_ops_h) |
|
|
24 #define octave_file_ops_h 1 |
|
|
25 |
|
|
26 #include <string> |
|
|
27 |
|
2283
|
28 #ifdef HAVE_SYS_TYPES_H |
|
|
29 #include <sys/types.h> |
|
|
30 #endif |
|
|
31 |
|
1765
|
32 class |
|
|
33 file_stat |
|
|
34 { |
|
|
35 public: |
|
|
36 |
|
2074
|
37 file_stat (const string& n = string (), bool fl = true) |
|
1765
|
38 : file_name (n), follow_links (fl), initialized (false) |
|
|
39 { |
|
|
40 if (! file_name.empty ()) |
|
|
41 update_internal (); |
|
|
42 } |
|
|
43 |
|
1778
|
44 file_stat (const file_stat& f) { copy (f); } |
|
1765
|
45 |
|
|
46 file_stat& operator = (const file_stat& f) |
|
|
47 { |
|
1879
|
48 if (this != &f) |
|
|
49 copy (f); |
|
|
50 |
|
1765
|
51 return *this; |
|
|
52 } |
|
|
53 |
|
|
54 ~file_stat (void) { } |
|
|
55 |
|
|
56 void get_stats (bool force = false) |
|
|
57 { |
|
|
58 if (! initialized || force) |
|
|
59 update_internal (force); |
|
|
60 } |
|
|
61 |
|
|
62 void get_stats (const string& n, bool force = false) |
|
|
63 { |
|
|
64 if (n != file_name || ! initialized || force) |
|
|
65 { |
|
|
66 initialized = false; |
|
|
67 |
|
|
68 file_name = n; |
|
|
69 |
|
|
70 update_internal (force); |
|
|
71 } |
|
|
72 } |
|
|
73 |
|
|
74 // File status and info. These should only be called for objects |
|
|
75 // that are already properly initialized. |
|
|
76 |
|
|
77 bool is_blk (void) const; |
|
|
78 bool is_chr (void) const; |
|
|
79 bool is_dir (void) const; |
|
|
80 bool is_fifo (void) const; |
|
|
81 bool is_lnk (void) const; |
|
|
82 bool is_reg (void) const; |
|
|
83 bool is_sock (void) const; |
|
|
84 |
|
|
85 ino_t ino (void) const { return fs_ino; } |
|
|
86 dev_t dev (void) const { return fs_dev; } |
|
|
87 |
|
|
88 nlink_t nlink (void) const { return fs_nlink; } |
|
|
89 |
|
|
90 uid_t uid (void) const { return fs_uid; } |
|
|
91 gid_t gid (void) const { return fs_gid; } |
|
|
92 |
|
|
93 off_t size (void) const { return fs_size; } |
|
|
94 |
|
|
95 time_t atime (void) const { return fs_atime; } |
|
|
96 time_t mtime (void) const { return fs_mtime; } |
|
|
97 time_t ctime (void) const { return fs_ctime; } |
|
|
98 |
|
|
99 #if defined (HAVE_ST_RDEV) |
|
|
100 dev_t rdev (void) const { return fs_rdev; } |
|
|
101 #endif |
|
|
102 |
|
|
103 #if defined (HAVE_ST_BLKSIZE) |
|
|
104 long blksize (void) const { return fs_blksize; } |
|
|
105 #endif |
|
|
106 |
|
|
107 #if defined (HAVE_ST_BLOCKS) |
|
|
108 long blocks (void) const { return fs_blocks; } |
|
|
109 #endif |
|
|
110 |
|
|
111 string mode_as_string (void) const; |
|
|
112 |
|
|
113 bool ok (void) const { return initialized && ! fail; } |
|
|
114 |
|
|
115 operator void* () const { return ok () ? (void *) -1 : (void *) 0; } |
|
|
116 |
|
|
117 bool exists (void) const { return ok (); } |
|
|
118 |
|
|
119 string error (void) const { return ok () ? string () : errmsg; } |
|
|
120 |
|
|
121 // Has the file referenced by this object been modified since TIME? |
|
|
122 bool is_newer (time_t time) const { return fs_mtime > time; } |
|
|
123 |
|
|
124 private: |
|
|
125 |
|
|
126 // Name of the file. |
|
|
127 string file_name; |
|
|
128 |
|
|
129 // TRUE means follow symbolic links to the ultimate file (stat). |
|
|
130 // FALSE means get information about the link itself (lstat). |
|
|
131 bool follow_links; |
|
|
132 |
|
|
133 // TRUE means we have already called stat. |
|
|
134 bool initialized; |
|
|
135 |
|
|
136 // TRUE means the stat for this file failed. |
|
|
137 bool fail; |
|
|
138 |
|
|
139 // If a failure occurs, this contains the system error text. |
|
|
140 string errmsg; |
|
|
141 |
|
|
142 // file type and permissions |
|
|
143 mode_t fs_mode; |
|
|
144 |
|
|
145 // serial number |
|
|
146 ino_t fs_ino; |
|
|
147 |
|
|
148 // device number |
|
|
149 dev_t fs_dev; |
|
|
150 |
|
|
151 // number of links |
|
|
152 nlink_t fs_nlink; |
|
|
153 |
|
|
154 // user ID of owner |
|
|
155 uid_t fs_uid; |
|
|
156 |
|
|
157 // group ID of owner |
|
|
158 gid_t fs_gid; |
|
|
159 |
|
|
160 // size in bytes, for regular files |
|
|
161 off_t fs_size; |
|
|
162 |
|
|
163 // time of last access |
|
|
164 time_t fs_atime; |
|
|
165 |
|
|
166 // time of last modification |
|
|
167 time_t fs_mtime; |
|
|
168 |
|
|
169 // time of last file status change |
|
|
170 time_t fs_ctime; |
|
|
171 |
|
|
172 #if defined (HAVE_ST_RDEV) |
|
|
173 // device number for special files |
|
|
174 dev_t fs_rdev; |
|
|
175 #endif |
|
|
176 |
|
|
177 #if defined (HAVE_ST_BLKSIZE) |
|
|
178 // best I/O block size |
|
|
179 long fs_blksize; |
|
|
180 #endif |
|
|
181 |
|
|
182 #if defined (HAVE_ST_BLOCKS) |
|
|
183 // number of 512-byte blocks allocated |
|
|
184 long fs_blocks; |
|
|
185 #endif |
|
|
186 |
|
|
187 void update_internal (bool force = false); |
|
1778
|
188 |
|
|
189 void copy (const file_stat&); |
|
1765
|
190 }; |
|
|
191 |
|
|
192 extern int is_newer (const string&, time_t); |
|
|
193 |
|
1772
|
194 extern int oct_mkdir (const string&, mode_t); |
|
1773
|
195 extern int oct_mkfifo (const string&, mode_t); |
|
1772
|
196 extern int oct_rename (const string&, const string&); |
|
1773
|
197 extern int oct_rmdir (const string&); |
|
1801
|
198 extern string oct_tempnam (void); |
|
1772
|
199 extern int oct_umask (mode_t); |
|
1773
|
200 extern int oct_unlink (const string&); |
|
1765
|
201 |
|
|
202 #endif |
|
|
203 |
|
|
204 /* |
|
|
205 ;;; Local Variables: *** |
|
|
206 ;;; mode: C++ *** |
|
|
207 ;;; End: *** |
|
|
208 */ |
