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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
#ifndef __UTIL_H
#define __UTIL_H
#include <string>
#include <list>
#include <set>
#include <sstream>
#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#include <signal.h>
#include <boost/format.hpp>
using namespace std;
using namespace boost;
class Error : public exception
{
protected:
string err;
public:
Error(const format & f);
~Error() throw () { };
const char * what() const throw () { return err.c_str(); }
const string & msg() const throw () { return err; }
};
class SysError : public Error
{
public:
SysError(const format & f);
};
class UsageError : public Error
{
public:
UsageError(const format & f) : Error(f) { };
};
typedef list<string> Strings;
typedef set<string> StringSet;
/* Paths are just strings. */
typedef string Path;
typedef list<Path> Paths;
typedef set<Path> PathSet;
/* The canonical system name, as returned by config.guess. */
extern string thisSystem;
/* Return an absolutized path, resolving paths relative to the
specified directory, or the current directory otherwise. The path
is also canonicalised. */
Path absPath(Path path, Path dir = "");
/* Canonicalise a path by removing all `.' or `..' components and
double or trailing slashes. */
Path canonPath(const Path & path);
/* Return the directory part of the given canonical path, i.e.,
everything before the final `/'. If the path is the root or an
immediate child thereof (e.g., `/foo'), this means an empty string
is returned. */
Path dirOf(const Path & path);
/* Return the base name of the given canonical path, i.e., everything
following the final `/'. */
string baseNameOf(const Path & path);
/* Return true iff the given path exists. */
bool pathExists(const Path & path);
/* Read the contents (target) of a symbolic link. The result is not
in any way canonicalised. */
Path readLink(const Path & path);
/* Read the contents of a directory. The entries `.' and `..' are
removed. */
Strings readDirectory(const Path & path);
/* Delete a path; i.e., in the case of a directory, it is deleted
recursively. Don't use this at home, kids. */
void deletePath(const Path & path);
/* Make a path read-only recursively. */
void makePathReadOnly(const Path & path);
/* Create a temporary directory. */
Path createTempDir();
/* Create a file and write the given text to it. The file is written
in binary mode (i.e., no end-of-line conversions). The path should
not already exist. */
void writeStringToFile(const Path & path, const string & s);
/* Messages. */
typedef enum {
ltPretty, /* nice, nested output */
ltEscapes, /* nesting indicated using escape codes (for log2xml) */
ltFlat /* no nesting */
} LogType;
typedef enum {
lvlError,
lvlInfo,
lvlTalkative,
lvlChatty,
lvlDebug,
lvlVomit
} Verbosity;
extern LogType logType;
extern Verbosity verbosity; /* suppress msgs > this */
class Nest
{
private:
bool nest;
public:
Nest();
~Nest();
void open(Verbosity level, const format & f);
void close();
};
void printMsg_(Verbosity level, const format & f);
#define startNest(varName, level, f) \
Nest varName; \
if (level <= verbosity) { \
varName.open(level, (f)); \
}
#define printMsg(level, f) \
do { \
if (level <= verbosity) { \
printMsg_(level, (f)); \
} \
} while (0)
#define debug(f) printMsg(lvlDebug, f)
/* Wrappers arount read()/write() that read/write exactly the
requested number of bytes. */
void readFull(int fd, unsigned char * buf, size_t count);
void writeFull(int fd, const unsigned char * buf, size_t count);
/* Automatic cleanup of resources. */
class AutoDelete
{
string path;
bool del;
public:
AutoDelete(const string & p);
~AutoDelete();
void cancel();
};
class AutoCloseFD
{
int fd;
public:
AutoCloseFD();
AutoCloseFD(int fd);
~AutoCloseFD();
void operator =(int fd);
operator int();
};
class AutoCloseDir
{
DIR * dir;
public:
AutoCloseDir();
AutoCloseDir(DIR * dir);
~AutoCloseDir();
void operator =(DIR * dir);
operator DIR *();
};
/* User interruption. */
extern volatile sig_atomic_t _isInterrupted;
void _interrupted();
void inline checkInterrupt()
{
if (_isInterrupted) _interrupted();
}
#endif /* !__UTIL_H */
|
