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// Copyright (c) 2002-2007 Peter Karlsson
//
// 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, version 2
//
// 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, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#include <stdlib.h>
#include "utility.h"
#include "lexer.h"
Token *Token::Parse(const string &line, bool in_settings, bool &error)
{
// Parse a single line.
if (';' == line[0])
{
if (';' == line[1] && !in_settings)
{
// Double semi-colon means that line starts with a semi-colon
return Parse2(line.substr(1), error);
}
else
{
// Line is a comment
return NULL;
}
}
else if ('[' == line[0])
{
// Line is a section name
string::size_type endbracket = line.find(']');
if (string::npos == endbracket)
{
error = true;
return NULL;
}
else
{
return new Section(line.substr(1, endbracket - 1), error);
}
}
else if (in_settings)
{
if (line != "")
{
return new Setting(line, error);
}
}
// Call real parser
return Parse2(line, error);
}
Token *Token::Parse2(string line, bool &error)
{
// Parse a regular line
string::size_type pos = 0;
Token *head = NULL;
if ('@' == line[0])
{
// Find end of variable and parse it
pos = line.find('@', 1);
if (1 == pos)
{
// Literal @ sign.
pos = line.find('@', 2);
if (string::npos == pos)
{
head = new Literal(line.substr(1), true);
}
else
{
head = new Literal(line.substr(1, pos - 1));
}
}
else if (string::npos == pos)
{
// Incorrect syntax
error = true;
return NULL;
}
else
{
// Real variable
head = new Variable(line.substr(1, pos - 1), error);
pos ++;
}
}
else
{
// String literal up to next variable or end-of-line
pos = line.find('@');
if (string::npos == pos)
{
head = new Literal(line, true);
}
else
{
head = new Literal(line.substr(0, pos));
}
}
if (pos != string::npos && pos < line.length())
{
head->m_next_p = Parse2(line.substr(pos), error);
}
else
{
if (head->IsVariable())
{
// If the last token on a line is a variable, add a final
// linebreak token
head->m_next_p = new Literal("", true);
}
}
return head;
}
Literal::Literal(string s, bool lineend)
: Token(),
m_literal(s),
m_linebreak(lineend)
{
// If the line ends with a single backslash, remove the linebreak.
// If the line ends with double backslashes, change them into one.
if (lineend)
{
string::size_type len = s.length();
if (len && m_literal[len - 1] == '\\')
{
// No matter what we erase the last character if it was a
// backslash.
m_literal.erase(len - 1);
m_linebreak = m_literal[len - 2] == '\\';
}
}
}
Section::Section(string s, bool &error)
: Token()
{
// Translate token string into enumeration value.
if (0 == fcompare(s, "Common")) m_section = Common;
else if (0 == fcompare(s, "IfEmpty")) m_section = IfEmpty;
else if (0 == fcompare(s, "IfNotNews")) m_section = IfNotNews;
else if (0 == fcompare(s, "IfNews")) m_section = IfNews;
else if (0 == fcompare(s, "Original")) m_section = Original;
else if (0 == fcompare(s, "Quoters")) m_section = Quoters;
else if (0 == fcompare(s, "Writers")) m_section = Writers;
else if (0 == fcompare(s, "TopNets")) m_section = TopNets;
else if (0 == fcompare(s, "TopDomains")) m_section = TopDomains;
else if (0 == fcompare(s, "Received")) m_section = Received;
else if (0 == fcompare(s, "Subjects")) m_section = Subjects;
else if (0 == fcompare(s, "Programs")) m_section = Programs;
else if (0 == fcompare(s, "Week")) m_section = Week;
else if (0 == fcompare(s, "Day")) m_section = Day;
else if (0 == fcompare(s, "Localization")) m_section = Localization;
else error = true;
}
Variable::Variable(string s, bool &error)
: Token(),
m_width(0)
{
// Find parameters
string::size_type bracket1 = s.find('[');
string::size_type bracket2 = s.find(']', bracket1 + 1);
string::size_type namelen = bracket1;
while (bracket1 != string::npos && bracket2 != string::npos &&
bracket2 > bracket1 + 1)
{
// Valid indexing
if (isdigit(s[bracket1 + 1]))
{
SetWidth(s.substr(bracket1 + 1, bracket2 - bracket1 - 1));
}
else
{
error = true;
}
// Find next bracket, if any
bracket1 = s.find('[', bracket2 + 1);
bracket2 = s.find(']', bracket1 + 1);
}
if (namelen != string::npos)
{
SetVariable(s.substr(0, namelen), error);
}
else
{
SetVariable(s, error);
}
}
void Variable::SetWidth(string s)
{
m_width = atoi(s.c_str());
}
void Variable::SetVariable(string s, bool &error)
{
// Translate token string into enumeration value.
if (0 == fcompare(s, "Version")) m_type = Version;
else if (0 == fcompare(s, "Copyright")) m_type = Copyright;
else if (0 == fcompare(s, "IfReceived")) m_type = IfReceived;
else if (0 == fcompare(s, "IfAreas")) m_type = IfAreas;
else if (0 == fcompare(s, "Place")) m_type = Place;
else if (0 == fcompare(s, "Name")) m_type = Name;
else if (0 == fcompare(s, "Written")) m_type = Written;
else if (0 == fcompare(s, "BytesWritten")) m_type = BytesWritten;
else if (0 == fcompare(s, "Ratio")) m_type = Ratio;
else if (0 == fcompare(s, "BytesTotal")) m_type = BytesTotal;
else if (0 == fcompare(s, "BytesQuoted")) m_type = BytesQuoted;
else if (0 == fcompare(s, "TotalAreas")) m_type = TotalAreas;
else if (0 == fcompare(s, "TotalPeople")) m_type = TotalPeople;
else if (0 == fcompare(s, "TotalNets")) m_type = TotalNets;
else if (0 == fcompare(s, "TotalDomains")) m_type = TotalDomains;
else if (0 == fcompare(s, "TotalSubjects")) m_type = TotalSubjects;
else if (0 == fcompare(s, "TotalPrograms")) m_type = TotalPrograms;
else if (0 == fcompare(s, "EarliestReceived")) m_type = EarliestReceived;
else if (0 == fcompare(s, "LastReceived")) m_type = LastReceived;
else if (0 == fcompare(s, "EarliestWritten")) m_type = EarliestWritten;
else if (0 == fcompare(s, "LastWritten")) m_type = LastWritten;
else if (0 == fcompare(s, "BytesOriginal")) m_type = BytesOriginal;
else if (0 == fcompare(s, "PerMessage")) m_type = PerMessage;
else if (0 == fcompare(s, "Fidonet")) m_type = Fidonet;
else if (0 == fcompare(s, "TopDomain")) m_type = TopDomain;
else if (0 == fcompare(s, "Received")) m_type = Received;
else if (0 == fcompare(s, "ReceiveRatio")) m_type = ReceiveRatio;
else if (0 == fcompare(s, "Subject")) m_type = Subject;
else if (0 == fcompare(s, "Program")) m_type = Program;
else if (0 == fcompare(s, "Bar")) m_type = Bar;
else error = true;
}
Setting::Setting(string s, bool &error)
{
// Find divider
string::size_type equals = s.find('=');
if (equals == string::npos)
{
error = true;
}
else
{
SetType(s.substr(0, equals), error);
SetValue(s.substr(equals + 1));
}
}
void Setting::SetType(string s, bool &error)
{
// Translate setting string into enumeration value
if (0 == fcompare(s, "Mon")) m_type = Monday;
else if (0 == fcompare(s, "Tue")) m_type = Tuesday;
else if (0 == fcompare(s, "Wed")) m_type = Wednesday;
else if (0 == fcompare(s, "Thu")) m_type = Thursday;
else if (0 == fcompare(s, "Fri")) m_type = Friday;
else if (0 == fcompare(s, "Sat")) m_type = Saturday;
else if (0 == fcompare(s, "Sun")) m_type = Sunday;
else error = true;
}
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