output.cc revision 2632:1bb2f91485ea 
1/*
2 * Copyright (c) 2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <errno.h>
30#include <limits.h>
31#include <stdlib.h>
32#include <sys/stat.h>
33#include <sys/types.h>
34
35#include <fstream>
36
37#include "base/misc.hh"
38#include "base/output.hh"
39
40using namespace std;
41
42OutputDirectory simout;
43
44/**
45 *
46 */
47OutputDirectory::OutputDirectory()
48{}
49
50OutputDirectory::~OutputDirectory()
51{}
52
53void
54OutputDirectory::setDirectory(const string &d)
55{
56    if (!dir.empty())
57        panic("Output directory already set!\n");
58
59    dir = d;
60
61    if (dir != ".") {
62        if (mkdir(dir.c_str(), 0777) < 0 && errno != EEXIST)
63            panic("couldn't make output dir %s: %s\n",
64                  dir, strerror(errno));
65    }
66
67    // guarantee that directory ends with a '/'
68    if (dir[dir.size() - 1] != '/')
69        dir += "/";
70}
71
72const string &
73OutputDirectory::directory()
74{
75    if (dir.empty())
76        panic("Output directory not set!");
77
78    return dir;
79}
80
81string
82OutputDirectory::resolve(const string &name)
83{
84    return (name[0] != '/') ? dir + name : name;
85}
86
87ostream *
88OutputDirectory::create(const string &name)
89{
90    if (name == "cerr" || name == "stderr")
91        return &cerr;
92
93    if (name == "cout" || name == "stdout")
94        return &cout;
95
96    ofstream *file = new ofstream(resolve(name).c_str(), ios::trunc);
97    if (!file->is_open())
98        panic("Cannot open file %s", name);
99
100    return file;
101}
102
103ostream *
104OutputDirectory::find(const string &name)
105{
106    if (name == "cerr" || name == "stderr")
107        return &cerr;
108
109    if (name == "cout" || name == "stdout")
110        return &cout;
111
112    string filename = resolve(name);
113    map_t::iterator i = files.find(filename);
114    if (i != files.end())
115        return (*i).second;
116
117    ofstream *file = new ofstream(filename.c_str(), ios::trunc);
118    if (!file->is_open())
119        panic("Cannot open file %s", filename);
120
121    files[filename] = file;
122    return file;
123}
124
125bool
126OutputDirectory::isFile(const std::ostream *os)
127{
128    return os && os != &cerr && os != &cout;
129}
130