-/* $Id$
-
-This file is part of libmspdatafile
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-#include <cctype>
-#include <sstream>
+#include <msp/strings/format.h>
#include "binaryparser.h"
+#include "except.h"
+#include "jsonparser.h"
#include "parser.h"
#include "statement.h"
#include "textparser.h"
Parser::Parser(IO::Base &i, const string &s):
in(i),
+ main_src(s),
src(s),
- good(true),
- mode(new TextParser(in, src))
-{ }
+ good(true)
+{
+ char c = in.peek();
+ if(c=='{' || c=='[')
+ mode = new JsonParser(in, src);
+ else
+ mode = new TextParser(in, src);
+}
Parser::~Parser()
{
delete mode;
}
-Statement Parser::parse()
+Statement Parser::parse(bool raw)
{
if(!good)
- throw Exception("Parser is not good");
+ throw logic_error("Parser::parse() !good");
try
{
while(1)
{
- Statement st=mode->parse();
- if(st.keyword=="__bin")
- {
- delete mode;
- mode=new BinaryParser(in, src);
- }
- else if(st.keyword=="__text")
+ Statement st = mode->parse();
+ if(!st.keyword.compare(0, 2, "__"))
{
- delete mode;
- mode=new TextParser(in, src);
+ st.control = true;
+ process_control_statement(st);
}
- else
+
+ if(raw || !st.control)
return st;
+ else if(!good) // This will occur with an __end statement
+ return Statement();
}
}
- catch(const Exception &e)
+ catch(const exception &e)
+ {
+ good = false;
+ if(dynamic_cast<const data_error *>(&e))
+ throw;
+ else
+ throw data_error(src, in.get_line_number(), e);
+ }
+}
+
+void Parser::process_control_statement(const Statement &st)
+{
+ if(st.keyword=="__bin")
+ {
+ delete mode;
+ mode = new BinaryParser(in, src);
+
+ while(in.peek()=='\n')
+ in.get();
+ }
+ else if(st.keyword=="__text")
+ {
+ delete mode;
+ mode = new TextParser(in, src);
+ }
+ else if(st.keyword=="__z")
+ in.set_decompress();
+ else if(st.keyword=="__src")
+ {
+ string s = st.args[0].get<string>();
+ if(s.empty())
+ src = main_src;
+ else
+ src = format("%s[%s]", main_src, s);
+ }
+ else if(st.keyword=="__end")
+ good = false;
+ else
+ mode->process_control_statement(st);
+}
+
+const StatementKey *Parser::peek(unsigned level)
+{
+ while(good)
{
- good=false;
- throw;
+ const StatementKey *key = mode->peek(level);
+ if(key && !key->keyword.compare(0, 2, "__"))
+ process_control_statement(mode->parse());
+ else
+ return key;
}
+
+ return nullptr;
+}
+
+bool Parser::parse_and_load(unsigned level, Loader &ldr, const LoaderAction &act)
+{
+ // Peek first to get any control statements processed
+ peek(level);
+ return mode->parse_and_load(level, ldr, act);
}
} // namespace DataFile