bpkg/cfg-create.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

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

#include <bpkg/cfg-create>

#include <utility> // move()
#include <cassert>
#include <fstream>
#include <iostream>

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

using namespace std;
using namespace butl;

namespace bpkg
{
  void
  cfg_create (const cfg_create_options& o, cli::scanner& args)
  {
    tracer trace ("cfg_create");

    dir_path d (o.directory ());
    level4 ([&]{trace << "creating configuration in " << d;});

    // If the directory already exists, make sure it is empty.
    // Otherwise, create it.
    //
    if (exists (d))
    {
      level5 ([&]{trace << "directory " << d << " exists";});

      if (!empty (d))
      {
        level5 ([&]{trace << "directory " << d << " not empty";});

        if (!o.wipe ())
          fail << "directory " << d << " is not empty";

        rm_r (d, false);
      }
    }
    else
    {
      level5 ([&]{trace << "directory " << d << " does not exist";});
      mk_p (d);
    }

    // Sort arguments into modules and configuration variables.
    //
    strings mods;
    strings vars;

    while (args.more ())
    {
      string a (args.next ());
      (a.find ('=') != string::npos ? vars : mods).push_back (move (a));
    }

    // Create build/.
    //
    dir_path bd (d / dir_path ("build"));
    mk (bd);

    // Write build/bootstrap.build.
    //
    path f (bd / path ("bootstrap.build"));
    try
    {
      ofstream ofs;
      ofs.exceptions (ofstream::badbit | ofstream::failbit);
      ofs.open (f.string ());

      ofs << "# Maintained automatically by bpkg, do not edit." << endl
          << "#" << endl
          << "project =" << endl
          << "amalgamation =" << endl
          << "using config" << endl
          << "using install" << endl;

      // Load user-supplied modules in bootstrap.build instead of root.build
      // since we don't know whether they can be loaded in the latter.
      //
      for (const string& m: mods)
        ofs << "using " << m << endl;
    }
    catch (const ofstream::failure&)
    {
      fail << "unable to write to " << f;
    }

    // Write root buildfile.
    //
    f = path (d / path ("buildfile"));
    try
    {
      ofstream ofs;
      ofs.exceptions (ofstream::badbit | ofstream::failbit);
      ofs.open (f.string ());

      ofs << "# Maintained automatically by bpkg, do not edit." << endl
          << "#" << endl
          << "./:" << endl;
    }
    catch (const ofstream::failure&)
    {
      fail << "unable to write to " << f;
    }

    // Configure.
    //
    {
      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 <= 1)
        args.push_back ("-q");
      else if (verb == 2)
        args.push_back ("-v");
      else
      {
        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.
      //
      string bspec ("configure(" + d.string () + "/)");
      args.push_back (bspec.c_str ());

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

    if (verb)
    {
      d.complete ();
      d.normalize ();
      text << "created new configuration in " << d;
    }
  }
}