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#include "line.hpp"
// io/line.hpp - Input from files, line-by-line
//
// Copyright © 2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <fcntl.h>
#include <unistd.h>
#include "../strings/astring.hpp"
#include "../strings/mstring.hpp"
#include "../strings/zstring.hpp"
#include "cxxstdio.hpp"
#include "../poison.hpp"
namespace io
{
AString Line::message_str(ZString cat, ZString msg) const
{
MString out;
if (column)
out += STRPRINTF("%s:%u:%u: %s: %s\n",
filename, line, column, cat, msg);
else
out += STRPRINTF("%s:%u: %s: %s\n",
filename, line, cat, msg);
out += STRPRINTF("%s\n", text);
out += STRPRINTF("%*c\n", column, '^');
return AString(out);
}
void Line::message(ZString cat, ZString msg) const
{
if (column)
FPRINTF(stderr, "%s:%u:%u: %s: %s\n",
filename, line, column, cat, msg);
else
FPRINTF(stderr, "%s:%u: %s: %s\n",
filename, line, cat, msg);
FPRINTF(stderr, "%s\n", text);
FPRINTF(stderr, "%*c\n", column, '^');
}
AString LineSpan::message_str(ZString cat, ZString msg) const
{
assert (begin.column);
assert (end.column);
assert (begin.column <= end.column);
MString out;
if (begin.line == end.line)
{
out += STRPRINTF("%s:%u:%u: %s: %s\n",
begin.filename, begin.line, begin.column, cat, msg);
out += STRPRINTF("%s\n", begin.text);
out += STRPRINTF("%*c", begin.column, '^');
for (unsigned c = begin.column; c != end.column; ++c)
out += '~';
out += '\n';
}
else
{
out += STRPRINTF("%s:%u:%u: %s: %s\n",
begin.filename, begin.line, begin.column, cat, msg);
out += STRPRINTF("%s\n", begin.text);
out += STRPRINTF("%*c", begin.column, '^');
for (unsigned c = begin.column; c != begin.text.size(); ++c)
out += '~';
out += " ...\n";
out += STRPRINTF("%s\n", end.text);
for (unsigned c = 0; c != end.column; ++c)
out += '~';
out += '\n';
}
return AString(out);
}
void LineSpan::message(ZString cat, ZString msg) const
{
FPRINTF(stderr, "%s", message_str(cat, msg));
}
LineReader::LineReader(ZString name)
: filename(name), line(0), column(0), rf(name)
{}
LineReader::LineReader(ZString name, FD fd)
: filename(name), line(0), column(0), rf(fd)
{}
bool LineReader::read_line(Line& l)
{
AString text;
if (rf.getline(text))
{
l.text = text;
l.filename = filename;
l.line = ++line;
l.column = 0; // whole line
return true;
}
return false;
}
bool LineReader::is_open()
{
return rf.is_open();
}
LineCharReader::LineCharReader(ZString name)
: LineReader(name)
{
column = 1; // not 0, not whole line
if (rf.is_open())
adv();
if (!line)
column = 0;
}
// sigh, copy-paste
// in just a couple months I can drop support for gcc 4.6 though
LineCharReader::LineCharReader(ZString name, FD fd)
: LineReader(name, fd)
{
column = 1; // not 0, not whole line
if (rf.is_open())
adv();
if (!line)
column = 0;
}
bool LineCharReader::get(LineChar& c)
{
if (!column)
return false;
c.text = line_text;
c.filename = filename;
c.line = line;
c.column = column;
return true;
}
void LineCharReader::adv()
{
if (column - 1 == line_text.size())
{
Line tmp;
if (!read_line(tmp))
{
// eof
column = 0;
return;
}
line_text = tmp.text;
column = 1;
}
else
column++;
}
bool LineCharReader::is_open()
{
return line != 0;
}
} // namespace io
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