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// file : libbbot/build-config.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <libbbot/build-config.hxx>
#include <string>
#include <cstddef> // size_t
#include <utility> // move()
#include <stdexcept> // invalid_argument
#include <libbutl/path.mxx>
#include <libbutl/fdstream.mxx>
#include <libbutl/tab-parser.mxx>
#include <libbutl/string-parser.mxx>
#include <libbpkg/manifest.hxx> // build_class_term::validate_name()
#include <libbbot/manifest.hxx> // task_manifest::check_config()
using namespace std;
using namespace butl;
namespace bbot
{
LIBBBOT_EXPORT build_configs
parse_buildtab (istream& is, const string& name)
{
build_configs r;
tab_parser parser (is, name);
tab_fields tl;
while (!(tl = parser.next ()).empty ())
{
size_t n (tl.size ()); // Fields count.
size_t i (0); // The field currently being processed.
// Throw tab_parsing for the field currently being processed. If i == n
// then we refer to the end-of-line column (presumably reporting a missed
// field).
//
auto bad_line = [&name, &tl, &i, n] (const string& d)
{
// Offset beyond the end-of-line is meaningless.
//
assert (i <= n);
throw tab_parsing (name,
tl.line,
i == n
? tl.end_column
: tl[i].column,
d);
};
build_config config;
config.machine_pattern = move (tl[i++].value);
// Configuration name, target and classes fields are the required ones.
//
if (i == n)
bad_line ("no configuration name found");
config.name = move (tl[i].value);
// Make sure the name is unique.
//
for (const auto& c: r)
{
if (c.name == config.name)
bad_line ("duplicate configuration name");
}
if (++i == n)
bad_line ("no target found");
try
{
config.target = target_triplet (tl[i].value);
}
catch (const invalid_argument& e)
{
bad_line (e.what ());
}
if (++i == n)
bad_line ("no classes found");
// Parse a potentially quoted class list.
//
try
{
// We don't expect the class names be quotes as they cannot contain
// spaces.
//
using namespace string_parser;
config.classes = parse_quoted (unquote (tl[i].value),
false /* unquote */);
// Validate the class names.
//
for (const string& c: config.classes)
{
if (c == "none")
throw invalid_argument ("class 'none' is reserved");
bpkg::build_class_term::validate_name (c);
}
}
catch (const invalid_argument& e)
{
bad_line (e.what ());
}
try
{
for (++i; i < n; ++i)
{
string& v (tl[i].value);
if (v[0] == '~') // Regular expression.
{
string re (v, 1);
task_manifest::check_regex (re);
config.warning_regexes.emplace_back (move (re));
}
else // Configuration variable.
config.vars.emplace_back (move (v));
}
}
catch (const invalid_argument& e)
{
bad_line (e.what ());
}
// Save the configuration.
//
r.emplace_back (move (config));
}
return r;
}
build_configs
parse_buildtab (const path& p)
{
ifdstream ifs (p);
build_configs r (parse_buildtab (ifs, p.string ()));
ifs.close (); // Throws on failure.
return r;
}
}
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