libdballe  5.18
csv.h
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00001 /*
00002  * dballe/csv - CSV utility functions
00003  *
00004  * Copyright (C) 2005--2011  ARPA-SIM <urpsim@smr.arpa.emr.it>
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
00018  *
00019  * Author: Enrico Zini <enrico@enricozini.com>
00020  */
00021 
00022 #ifndef DBA_CSV_H
00023 #define DBA_CSV_H
00024 
00030 #include <vector>
00031 #include <string>
00032 #include <iosfwd>
00033 #include <stdio.h>
00034 
00035 namespace dballe
00036 {
00037 
00048 bool csv_read_next(FILE* in, std::vector<std::string>& cols);
00049 
00050 class CSVReader
00051 {
00052 protected:
00054     virtual bool nextline() = 0;
00055 
00056 public:
00058     std::string line;
00059 
00061     std::vector<std::string> cols;
00062 
00063     virtual ~CSVReader();
00064 
00075     bool move_to_data(unsigned number_col=0);
00076 
00078     bool next();
00079 
00080     static std::string unescape(const std::string& csvstr);
00081 };
00082 
00083 class IstreamCSVReader : public CSVReader
00084 {
00085 protected:
00086     virtual bool nextline();
00087 
00088 public:
00089     std::istream& in;
00090 
00091     IstreamCSVReader(std::istream& in) : in(in) {}
00092 };
00093 
00094 // TODO: CSV readers allowing to peek on the next line without consuming it, to
00095 // allow the Msg parser to stop at msg boundary after peeking at a line
00096 // also, stripping newlines at end of lines
00097 // also, reading from istream
00098 // also, de-escaping strings (if they start with quote)
00099 
00103 void csv_output_quoted_string(std::ostream& out, const std::string& str);
00104 
00105 }
00106 
00107 /* vim:set ts=4 sw=4: */
00108 #endif