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// file : bpkg/utility.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bpkg/utility.hxx>
#include <iostream> // cout, cin
#include <libbutl/prompt.mxx>
#include <libbutl/process.mxx>
#include <libbutl/fdstream.mxx>
#include <bpkg/diagnostics.hxx>
#include <bpkg/common-options.hxx>
using namespace std;
using namespace butl;
namespace bpkg
{
const string empty_string;
const path empty_path;
const dir_path empty_dir_path;
const dir_path bpkg_dir (".bpkg");
// Keep these directory names short, lowering the probability of hitting the
// path length limit on Windows.
//
const dir_path certs_dir (dir_path (bpkg_dir) /= "certs");
const dir_path repos_dir (dir_path (bpkg_dir) /= "repos");
const dir_path current_dir (".");
dir_path temp_dir;
auto_rmfile
tmp_file (const string& p)
{
assert (!temp_dir.empty ());
return auto_rmfile (temp_dir / path::traits::temp_name (p));
}
auto_rmdir
tmp_dir (const string& p)
{
assert (!temp_dir.empty ());
return auto_rmdir (temp_dir / dir_path (path::traits::temp_name (p)));
}
void
init_tmp (const dir_path& cfg)
{
// Whether the configuration is required or optional depends on the
// command so if the configuration directory does not exist or it is not a
// bpkg configuration directory, we simply create tmp in a system one and
// let the command complain if necessary.
//
dir_path d (cfg.empty () ||
!exists (cfg / bpkg_dir, true /* ignore_error */)
? dir_path::temp_path ("bpkg")
: cfg / bpkg_dir / dir_path ("tmp"));
if (exists (d))
rm_r (d, true /* dir_itself */, 2);
mk (d); // We shouldn't need mk_p().
temp_dir = move (d);
}
void
clean_tmp (bool ignore_error)
{
if (!temp_dir.empty () && exists (temp_dir))
{
rm_r (temp_dir,
true /* dir_itself */,
3,
ignore_error ? rm_error_mode::ignore : rm_error_mode::fail);
temp_dir.clear ();
}
}
bool stderr_term;
bool
yn_prompt (const string& p, char d)
{
try
{
return butl::yn_prompt (p, d);
}
catch (io_error&)
{
fail << "unable to read y/n answer from stdin" << endf;
}
}
bool
exists (const path& f, bool ignore_error)
{
try
{
return file_exists (f, true /* follow_symlinks */, ignore_error);
}
catch (const system_error& e)
{
fail << "unable to stat path " << f << ": " << e << endf;
}
}
bool
exists (const dir_path& d, bool ignore_error)
{
try
{
return dir_exists (d, ignore_error);
}
catch (const system_error& e)
{
fail << "unable to stat path " << d << ": " << e << endf;
}
}
bool
empty (const dir_path& d)
{
try
{
return dir_empty (d);
}
catch (const system_error& e)
{
fail << "unable to scan directory " << d << ": " << e << endf;
}
}
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;
}
}
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;
}
}
void
rm (const path& f, uint16_t v)
{
if (verb >= v)
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;
}
}
void
rm_r (const dir_path& d, bool dir, uint16_t v, rm_error_mode m)
{
if (verb >= v)
text << (dir ? "rmdir -r " : "rm -r ") << (dir ? d : d / dir_path ("*"));
try
{
rmdir_r (d, dir, m == rm_error_mode::ignore);
}
catch (const system_error& e)
{
bool w (m == rm_error_mode::warn);
(w ? warn : error) << "unable to remove " << (dir ? "" : "contents of ")
<< "directory " << d << ": " << e;
if (!w)
throw failed ();
}
}
void
mv (const dir_path& from, const dir_path& to)
{
if (verb >= 3)
text << "mv " << from << " to " << to; // Prints trailing slashes.
try
{
mvdir (from, to);
}
catch (const system_error& e)
{
fail << "unable to move directory " << from << " to " << to << ": " << e;
}
}
fdpipe
open_pipe ()
{
try
{
return fdopen_pipe ();
}
catch (const io_error& e)
{
fail << "unable to open pipe: " << e << endf;
}
}
auto_fd
open_dev_null ()
{
try
{
return fdnull ();
}
catch (const io_error& e)
{
fail << "unable to open null device: " << e << endf;
}
}
dir_path exec_dir;
const char*
name_b (const common_options& co)
{
return co.build_specified ()
? co.build ().string ().c_str ()
: "b" BPKG_EXE_SUFFIX;
}
}
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