bpkg/utility.cxx


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

// file      : bpkg/utility.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#include <bpkg/utility>

#include <system_error>

#include <butl/process>

#include <bpkg/types>
#include <bpkg/diagnostics>

using namespace std;
using namespace butl;

namespace bpkg
{
  bool
  exists (const path& f)
  {
    try
    {
      return file_exists (f);
    }
    catch (const system_error& e)
    {
      error << "unable to stat path " << f << ": " << e.what ();
      throw failed ();
    }
  }

  bool
  exists (const dir_path& d)
  {
    try
    {
      return dir_exists (d);
    }
    catch (const system_error& e)
    {
      error << "unable to stat path " << d << ": " << e.what ();
      throw failed ();
    }
  }

  bool
  empty (const dir_path& d)
  {
    try
    {
      dir_iterator i (d);
      return i == end (i);
    }
    catch (const system_error& e)
    {
      error << "unable to scan directory " << d << ": " << e.what ();
      throw failed ();
    }
  }

  void
  mk (const dir_path& d)
  {
    if (verb >= 3)
      text << "mkdir " << d;

    try
    {
      try_mkdir (d);
    }
    catch (const system_error& e)
    {
      fail << "unable to create directory " << d << ": " << e.what ();
    }
  }

  void
  mk_p (const dir_path& d)
  {
    if (verb >= 3)
      text << "mkdir -p " << d;

    try
    {
      try_mkdir_p (d);
    }
    catch (const system_error& e)
    {
      fail << "unable to create directory " << d << ": " << e.what ();
    }
  }

  void
  rm (const path& f)
  {
    if (verb >= 3)
      text << "rm " << f;

    try
    {
      if (try_rmfile (f) == rmfile_status::not_exist)
        fail << "unable to remove file " << f << ": file does not exist";
    }
    catch (const system_error& e)
    {
      fail << "unable to remove file " << f << ": " << e.what ();
    }
  }

  void
  rm_r (const dir_path& d, bool dir)
  {
    if (verb >= 3)
      text << "rmdir -r " << d << (dir ? "" : "*");

    try
    {
      rmdir_r (d, dir);
    }
    catch (const system_error& e)
    {
      fail << "unable to remove " << (dir ? "" : "contents of ")
           << "directory " << d << ": " << e.what ();
    }
  }

  void
  run (const char* const args[])
  {
    if (verb >= 2)
      print_process (args);

    try
    {
      process pr (args);

      if (!pr.wait ())
        throw failed (); // Assume the child issued diagnostics.
    }
    catch (const process_error& e)
    {
      error << "unable to execute " << args[0] << ": " << e.what ();

      if (e.child ())
        exit (1);

      throw failed ();
    }
  }

  void
  run_b (const string& bspec, bool quiet, const strings& vars)
  {
    cstrings args {"b"};

    // Map verbosity level. If we are running quiet or at level 1,
    // then run build2 quiet. Otherwise, run it at the same level
    // as us.
    //
    string vl;
    if (verb <= (quiet ? 1 : 0))
      args.push_back ("-q");
    else if (verb == 2)
      args.push_back ("-v");
    else if (verb > 2)
    {
      vl = to_string (verb);
      args.push_back ("--verbose");
      args.push_back (vl.c_str ());
    }

    // Add config vars.
    //
    for (const string& v: vars)
      args.push_back (v.c_str ());

    // Add buildspec.
    //
    args.push_back (bspec.c_str ());

    args.push_back (nullptr);
    run (args);
  }

  bool exception_unwinding_dtor = false;
}