13bcf233f1
default=. In the append= case, when looking up an entry, it also looks in the section named by the append= for something to append to the entry --HG-- extra : convert_revision : b51915094ad3ca151d7f241c29e19b6b29d3a3c0
210 lines
7.7 KiB
C++
210 lines
7.7 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __INIFILE_HH__
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#define __INIFILE_HH__
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#include <fstream>
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#include <list>
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#include <string>
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#include <vector>
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#include "base/hashmap.hh"
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///
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/// @file
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/// Declaration of IniFile object.
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///
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///
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/// This class represents the contents of a ".ini" file.
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///
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/// It's basically a two level lookup table: a set of named sections,
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/// where each section is a set of key/value pairs. Section names,
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/// keys, and values are all uninterpreted strings.
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///
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class IniFile
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{
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protected:
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///
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/// A single key/value pair.
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///
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class Entry
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{
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std::string value; ///< The entry value.
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mutable bool referenced; ///< Has this entry been used?
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public:
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/// Constructor.
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Entry(const std::string &v)
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: value(v), referenced(false)
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{
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}
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/// Has this entry been used?
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bool isReferenced() { return referenced; }
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/// Fetch the value.
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const std::string &getValue() const;
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/// Set the value.
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void setValue(const std::string &v) { value = v; }
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/// Append the given string to the value. A space is inserted
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/// between the existing value and the new value. Since this
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/// operation is typically used with values that are
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/// space-separated lists of tokens, this keeps the tokens
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/// separate.
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void appendValue(const std::string &v) { value += " "; value += v; }
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};
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///
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/// A section.
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///
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class Section
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{
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/// EntryTable type. Map of strings to Entry object pointers.
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typedef m5::hash_map<std::string, Entry *> EntryTable;
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EntryTable table; ///< Table of entries.
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mutable bool referenced; ///< Has this section been used?
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public:
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/// Constructor.
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Section()
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: table(), referenced(false)
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{
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}
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/// Has this section been used?
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bool isReferenced() { return referenced; }
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/// Add an entry to the table. If an entry with the same name
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/// already exists, the 'append' parameter is checked If true,
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/// the new value will be appended to the existing entry. If
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/// false, the new value will replace the existing entry.
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void addEntry(const std::string &entryName, const std::string &value,
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bool append);
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/// Add an entry to the table given a string assigment.
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/// Assignment should be of the form "param=value" or
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/// "param+=value" (for append). This funciton parses the
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/// assignment statment and calls addEntry().
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/// @retval True for success, false if parse error.
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bool add(const std::string &assignment);
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/// Find the entry with the given name.
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/// @retval Pointer to the entry object, or NULL if none.
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Entry *findEntry(const std::string &entryName) const;
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/// Print the unreferenced entries in this section to cerr.
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/// Messages can be suppressed using "unref_section_ok" and
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/// "unref_entries_ok".
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/// @param sectionName Name of this section, for use in output message.
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/// @retval True if any entries were printed.
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bool printUnreferenced(const std::string §ionName);
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/// Print the contents of this section to cout (for debugging).
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void dump(const std::string §ionName);
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};
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/// SectionTable type. Map of strings to Section object pointers.
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typedef m5::hash_map<std::string, Section *> SectionTable;
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protected:
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/// Hash of section names to Section object pointers.
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SectionTable table;
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/// Look up section with the given name, creating a new section if
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/// not found.
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/// @retval Pointer to section object.
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Section *addSection(const std::string §ionName);
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/// Look up section with the given name.
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/// @retval Pointer to section object, or NULL if not found.
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Section *findSection(const std::string §ionName) const;
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/// Load parameter settings from given istream. This is a helper
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/// function for load(string) and loadCPP(), which open a file
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/// and then pass it here.
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/// @retval True if successful, false if errors were encountered.
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bool load(std::istream &f);
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public:
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/// Constructor.
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IniFile();
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/// Destructor.
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~IniFile();
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/// Load the specified file, passing it through the C preprocessor.
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/// Parameter settings found in the file will be merged with any
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/// already defined in this object.
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/// @param file The path of the file to load.
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/// @param cppFlags Vector of extra flags to pass to cpp.
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/// @retval True if successful, false if errors were encountered.
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bool loadCPP(const std::string &file, std::vector<char *> &cppFlags);
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/// Load the specified file.
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/// Parameter settings found in the file will be merged with any
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/// already defined in this object.
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/// @param file The path of the file to load.
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/// @retval True if successful, false if errors were encountered.
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bool load(const std::string &file);
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/// Take string of the form "<section>:<parameter>=<value>" or
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/// "<section>:<parameter>+=<value>" and add to database.
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/// @retval True if successful, false if parse error.
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bool add(const std::string &s);
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/// Find value corresponding to given section and entry names.
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/// Value is returned by reference in 'value' param.
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/// @retval True if found, false if not.
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bool find(const std::string §ion, const std::string &entry,
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std::string &value) const;
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/// Find value corresponding to given section and entry names,
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/// following "default" links to other sections where possible.
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/// Value is returned by reference in 'value' param.
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/// @retval True if found, false if not.
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bool findDefault(const std::string §ion, const std::string &entry,
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std::string &value) const;
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bool findAppend(const std::string §ion, const std::string &entry,
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std::string &value) const;
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/// Print unreferenced entries in object. Iteratively calls
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/// printUnreferend() on all the constituent sections.
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bool printUnreferenced();
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/// Dump contents to cout. For debugging.
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void dump();
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};
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#endif // __INIFILE_HH__
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