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// file : build/diagnostics.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build/diagnostics>
#include <sstream>
#include <iostream>
#include <build/scope>
#include <build/target>
#include <build/operation>
#include <build/context>
#include <build/utility>
using namespace std;
namespace build
{
string
diag_relative (const path& p)
{
const path& b (*relative_base);
if (p.absolute ())
{
if (p == b)
return ".";
#ifndef _WIN32
if (p == home)
return "~";
#endif
path rb (relative (p));
#ifndef _WIN32
if (rb.relative ())
{
// See if the original path with the ~/ shortcut is better
// that the relative to base.
//
if (p.sub (home))
{
path rh (p.leaf (home));
if (rb.string ().size () > rh.string ().size () + 2) // 2 for '~/'
return "~/" + rh.string ();
}
}
else if (rb.sub (home))
return "~/" + rb.leaf (home).string ();
#endif
return rb.string ();
}
return p.string ();
}
string
diag_relative (const dir_path& d, bool cur)
{
string r (diag_relative (static_cast<const path&> (d)));
// Translate "." to empty.
//
if (!cur && d.absolute () && r == ".")
r.clear ();
// Add trailing '/'.
//
if (!r.empty () && !dir_path::traits::is_separator (r.back ()))
r += '/';
return r;
}
// Relative stream.
//
const int relative_index = ostream::xalloc ();
// diag_do(), etc.
//
string
diag_do (const action&, const target& t)
{
const meta_operation_info& mi (*current_mif);
const operation_info& oi (*current_oif);
ostringstream os;
// perform(update(x)) -> "update x"
// configure(update(x)) -> "configure updating x"
//
if (mi.name_do.empty ())
os << oi.name_do << ' ';
else
{
os << mi.name_do << ' ';
if (!oi.name_doing.empty ())
os << oi.name_doing << ' ';
}
os << t;
return os.str ();
}
string
diag_doing (const action&, const target& t)
{
const meta_operation_info& mi (*current_mif);
const operation_info& oi (*current_oif);
ostringstream os;
// perform(update(x)) -> "updating x"
// configure(update(x)) -> "configuring updating x"
//
if (!mi.name_doing.empty ())
os << mi.name_doing << ' ';
if (!oi.name_doing.empty ())
os << oi.name_doing << ' ';
os << t;
return os.str ();
}
string
diag_done (const action&, const target& t)
{
const meta_operation_info& mi (*current_mif);
const operation_info& oi (*current_oif);
ostringstream os;
// perform(update(x)) -> "x is up to date"
// configure(update(x)) -> "updating x is configured"
//
if (mi.name_done.empty ())
{
os << t;
if (!oi.name_done.empty ())
os << " " << oi.name_done;
}
else
{
if (!oi.name_doing.empty ())
os << oi.name_doing << ' ';
os << t << " " << mi.name_done;
}
return os.str ();
}
void
print_process (const char* const* args, size_t n)
{
diag_record r (text);
size_t m (0);
const char* const* p (args);
do
{
if (m != 0)
r << " |"; // Trailing space will be added inside the loop.
for (m++; *p != nullptr; p++, m++)
r << (p != args ? " " : "")
<< (**p == '\0' ? "\"" : "") // Quote empty arguments.
<< *p
<< (**p == '\0' ? "\"" : "");
if (m < n) // Can we examine the next element?
{
p++;
m++;
}
} while (*p != nullptr);
}
// Trace verbosity level.
//
uint16_t verb;
// Diagnostic facility, base infrastructure.
//
ostream* diag_stream = &cerr;
diag_record::
~diag_record () noexcept(false)
{
// Don't flush the record if this destructor was called as part of
// the stack unwinding. Right now this means we cannot use this
// mechanism in destructors, which is not a big deal, except for
// one place: exception_guard. So for now we are going to have
// this ugly special check which we will be able to get rid of
// once C++17 uncaught_exceptions() becomes available.
//
if (!empty_ && (!std::uncaught_exception () || exception_unwinding_dtor))
{
*diag_stream << os_.str () << std::endl;
if (epilogue_ != nullptr)
epilogue_ (*this); // Can throw.
}
}
// Diagnostic facility, project specifics.
//
void simple_prologue_base::
operator() (const diag_record& r) const
{
relative (r.os_, relative_);
if (type_ != nullptr)
r << type_ << ": ";
if (name_ != nullptr)
r << name_ << ": ";
}
void location_prologue_base::
operator() (const diag_record& r) const
{
relative (r.os_, relative_);
r << loc_.file << ':' << loc_.line << ':' << loc_.column << ": ";
if (type_ != nullptr)
r << type_ << ": ";
if (name_ != nullptr)
r << name_ << ": ";
}
const basic_mark error ("error");
const basic_mark warn ("warning");
const basic_mark info ("info");
const text_mark text;
const fail_mark<failed> fail;
}
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