ini file reader

2 files changed, 159 insertions, 0 deletions

diff --git a/src/common/inifile.cc b/src/common/inifile.cc
new file mode 100644
index 0000000..c96b85b
--- /dev/null
+++ b/src/common/inifile.cc
@@ -0,0 +1,93 @@
+/*
+   common/inifile.cc
+   This file is part of the Osirion project and is distributed under 
+   the terms of the GNU General Public License version 2 
+*/
+
+// project headers
+#include "inifile.h"
+#include "console.h"
+
+namespace common {
+
+void IniFile::open(const char * filename, std::ios_base::openmode mode ) 
+{
+	last_read_was_section = false;
+	last_read_was_key = false;
+	key_current = "";
+	value_current = "";
+	section_current = "";
+	line_number = 0;
+
+	File::open(filename, mode);
+}
+
+
+bool IniFile::got_section() const { 
+	return last_read_was_section; 
+}
+
+bool IniFile::got_section(const char * sectionlabel) const {
+	return (last_read_was_section && section_current == sectionlabel);
+}
+
+IniFile & IniFile::getline() 
+{
+	char line[1024];
+	
+	last_read_was_section = false;
+	last_read_was_key = false;
+	key_current = "";
+	value_current = "";
+ 
+	while ((*this)) {
+		File::getline(line, 1024);
+		std::string s(line);
+		line_number++;
+
+		if (s.size() == 0) {
+			// empty line
+		} else
+		// comment
+		if (s[0] == '#' || s[0] == ';') {
+			// condebug << "IniFile got comment " << s << std::endl;
+		} else
+		// section header
+		if (s.size() > 2 && s[0] == '[' && s[s.size()-1] == ']' ) {
+			// condebug << "Inifile got section header " << s << std::endl;
+			section_current = s.substr(1, s.size()-2);
+			last_read_was_section = true;
+			break;
+		} else {
+			// key=value pair
+			size_t found = s.find('=');
+			if (found !=std::string::npos) {
+				// FIXME strip spaces, make lowercase
+				key_current = s.substr(0, found);
+				
+				if (key_current.size() > 0 ) {
+					value_current = s.substr(found+1, s.size() - found - 1);
+					last_read_was_key = true;
+					break;
+				}
+		
+			}
+		}
+	}
+
+	return (*this);
+}
+
+bool IniFile::got_key_string(char * const keylabel, std::string & valuestring) {
+	//condebug << "IniFile got_value_string " << keylabel << " " << last_read_was_key << std::endl;
+	if (last_read_was_key && key_current == keylabel) {
+		valuestring.assign(value_current);
+		return true;
+	} else {
+		return false;
+	}
+}
+
+
+} // namespace common
+
diff --git a/src/common/inifile.h b/src/common/inifile.h
new file mode 100644
index 0000000..934da58
--- /dev/null
+++ b/src/common/inifile.h
@@ -0,0 +1,66 @@
+/*
+   common/inifile.h
+   This file is part of the Osirion project and is distributed under 
+   the terms of the GNU General Public License version 2 
+*/
+
+#ifndef __INCLUDED_INIFILE_H__
+#define __INCLUDED_INIFILE_H__
+
+// project headers
+#include "file.h"
+
+// C++ headers
+#include <string>
+#include <fstream>
+
+namespace common {
+
+/// a class to read .ini files
+/*! The IniFile class provides functions to read .ini files. A .ini file
+ *  consists of one or more [section] headers followed by one or more key=value
+ *  pairs. Lines starting with # or ; are considered comments
+ */
+class IniFile : public File
+{
+public:
+	/// open the file for reading
+	virtual void open(const char * filename, std::ios_base::openmode mode = std::ios_base::in );
+
+	IniFile & getline();
+
+	/// current section label
+	inline std::string section() const { return section_current; }
+
+	/// current key
+	inline std::string key() const { return key_current; }
+	
+	/// current value
+	inline std::string value() const { return value_current; }
+
+	/// true if the last read statement was a section header
+	bool got_section() const;
+	/// true if the last read statement was a certain section header
+	bool got_section(const char * sectionlabel) const;
+	
+	/// true if the last read statement was a key=value pair
+	inline bool got_key() const { return last_read_was_key; }
+	/// check if the last read key=value pair matches keylabel and store the value in valuestring
+	bool got_key_string(char * const keylabel, std::string & valuestring);
+
+	inline unsigned int line() const { return line_number; }
+
+private:
+	std::string section_current;
+	std::string key_current;
+	std::string value_current;
+
+	bool last_read_was_key;
+	bool last_read_was_section;
+
+	unsigned int line_number;
+}; // class IniFile
+
+} // namespace common
+
+#endif // __INCLUDED_INIFILE_H__