blob: 7256547e32673df15231a3bf813c44a669ef7cb2 (
plain)
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
|
// file : build2/utility.txx -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
namespace build2
{
template <typename T>
T
run (const process_path& pp,
const char* args[],
T (*f) (string&),
bool err,
bool ignore_exit,
sha256* checksum)
{
process pr (run_start (pp, args, err));
T r;
string l; // Last line of output.
try
{
ifdstream is (pr.in_ofd);
while (is.peek () != ifdstream::traits_type::eof () && // Keep last line.
getline (is, l))
{
trim (l);
if (checksum != nullptr)
checksum->append (l);
if (r.empty ())
r = f (l);
}
}
catch (const ifdstream::failure&)
{
// Presumably the child process failed. Let run_finish() deal with that.
}
if (!(run_finish (args, err, pr, l) || ignore_exit))
r = T ();
return r;
}
}
|