Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/src/base/inifile.cc

@@ -0,0 +1,328 @@
+/*
+ * Copyright (c) 2001-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Nathan Binkert
+ *          Steve Reinhardt
+ */
+
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "base/inifile.hh"
+#include "base/str.hh"
+
+using namespace std;
+
+IniFile::IniFile()
+{}
+
+IniFile::~IniFile()
+{
+    SectionTable::iterator i = table.begin();
+    SectionTable::iterator end = table.end();
+
+    while (i != end) {
+        delete (*i).second;
+        ++i;
+    }
+}
+
+bool
+IniFile::load(const string &file)
+{
+    ifstream f(file.c_str());
+
+    if (!f.is_open())
+        return false;
+
+    return load(f);
+}
+
+
+const string &
+IniFile::Entry::getValue() const
+{
+    referenced = true;
+    return value;
+}
+
+
+void
+IniFile::Section::addEntry(const std::string &entryName,
+                           const std::string &value,
+                           bool append)
+{
+    EntryTable::iterator ei = table.find(entryName);
+
+    if (ei == table.end()) {
+        // new entry
+        table[entryName] = new Entry(value);
+    }
+    else if (append) {
+        // append new reult to old entry
+        ei->second->appendValue(value);
+    }
+    else {
+        // override old entry
+        ei->second->setValue(value);
+    }
+}
+
+
+bool
+IniFile::Section::add(const std::string &assignment)
+{
+    string::size_type offset = assignment.find('=');
+    if (offset == string::npos) {
+        // no '=' found
+        cerr << "Can't parse .ini line " << assignment << endl;
+        return false;
+    }
+
+    // if "+=" rather than just "=" then append value
+    bool append = (assignment[offset-1] == '+');
+
+    string entryName = assignment.substr(0, append ? offset-1 : offset);
+    string value = assignment.substr(offset + 1);
+
+    eat_white(entryName);
+    eat_white(value);
+
+    addEntry(entryName, value, append);
+    return true;
+}
+
+
+IniFile::Entry *
+IniFile::Section::findEntry(const std::string &entryName) const
+{
+    referenced = true;
+
+    EntryTable::const_iterator ei = table.find(entryName);
+
+    return (ei == table.end()) ? NULL : ei->second;
+}
+
+
+IniFile::Section *
+IniFile::addSection(const string &sectionName)
+{
+    SectionTable::iterator i = table.find(sectionName);
+
+    if (i != table.end()) {
+        return i->second;
+    }
+    else {
+        // new entry
+        Section *sec = new Section();
+        table[sectionName] = sec;
+        return sec;
+    }
+}
+
+
+IniFile::Section *
+IniFile::findSection(const string &sectionName) const
+{
+    SectionTable::const_iterator i = table.find(sectionName);
+
+    return (i == table.end()) ? NULL : i->second;
+}
+
+
+// Take string of the form "<section>:<parameter>=<value>" and add to
+// database.  Return true if successful, false if parse error.
+bool
+IniFile::add(const string &str)
+{
+    // find ':'
+    string::size_type offset = str.find(':');
+    if (offset == string::npos)  // no ':' found
+        return false;
+
+    string sectionName = str.substr(0, offset);
+    string rest = str.substr(offset + 1);
+
+    eat_white(sectionName);
+    Section *s = addSection(sectionName);
+
+    return s->add(rest);
+}
+
+bool
+IniFile::load(istream &f)
+{
+    Section *section = NULL;
+
+    while (!f.eof()) {
+        f >> ws; // Eat whitespace
+        if (f.eof()) {
+            break;
+        }
+
+        string line;
+        getline(f, line);
+        if (line.size() == 0)
+            continue;
+
+        eat_end_white(line);
+        int last = line.size() - 1;
+
+        if (line[0] == '[' && line[last] == ']') {
+            string sectionName = line.substr(1, last - 1);
+            eat_white(sectionName);
+            section = addSection(sectionName);
+            continue;
+        }
+
+        if (section == NULL)
+            continue;
+
+        if (!section->add(line))
+            return false;
+    }
+
+    return true;
+}
+
+bool
+IniFile::find(const string &sectionName, const string &entryName,
+              string &value) const
+{
+    Section *section = findSection(sectionName);
+    if (section == NULL)
+        return false;
+
+    Entry *entry = section->findEntry(entryName);
+    if (entry == NULL)
+        return false;
+
+    value = entry->getValue();
+
+    return true;
+}
+
+bool
+IniFile::sectionExists(const string &sectionName) const
+{
+    return findSection(sectionName) != NULL;
+}
+
+
+bool
+IniFile::Section::printUnreferenced(const string &sectionName)
+{
+    bool unref = false;
+    bool search_unref_entries = false;
+    vector<string> unref_ok_entries;
+
+    Entry *entry = findEntry("unref_entries_ok");
+    if (entry != NULL) {
+        tokenize(unref_ok_entries, entry->getValue(), ' ');
+        if (unref_ok_entries.size()) {
+            search_unref_entries = true;
+        }
+    }
+
+    for (EntryTable::iterator ei = table.begin();
+         ei != table.end(); ++ei) {
+        const string &entryName = ei->first;
+        Entry *entry = ei->second;
+
+        if (entryName == "unref_section_ok" ||
+            entryName == "unref_entries_ok")
+        {
+            continue;
+        }
+
+        if (!entry->isReferenced()) {
+            if (search_unref_entries &&
+                (std::find(unref_ok_entries.begin(), unref_ok_entries.end(),
+                           entryName) != unref_ok_entries.end()))
+            {
+                continue;
+            }
+
+            cerr << "Parameter " << sectionName << ":" << entryName
+                 << " not referenced." << endl;
+            unref = true;
+        }
+    }
+
+    return unref;
+}
+
+
+bool
+IniFile::printUnreferenced()
+{
+    bool unref = false;
+
+    for (SectionTable::iterator i = table.begin();
+         i != table.end(); ++i) {
+        const string &sectionName = i->first;
+        Section *section = i->second;
+
+        if (!section->isReferenced()) {
+            if (section->findEntry("unref_section_ok") == NULL) {
+                cerr << "Section " << sectionName << " not referenced."
+                     << endl;
+                unref = true;
+            }
+        }
+        else {
+            if (section->printUnreferenced(sectionName)) {
+                unref = true;
+            }
+        }
+    }
+
+    return unref;
+}
+
+
+void
+IniFile::Section::dump(const string &sectionName)
+{
+    for (EntryTable::iterator ei = table.begin();
+         ei != table.end(); ++ei) {
+        cout << sectionName << ": " << (*ei).first << " => "
+             << (*ei).second->getValue() << "\n";
+    }
+}
+
+void
+IniFile::dump()
+{
+    for (SectionTable::iterator i = table.begin();
+         i != table.end(); ++i) {
+        i->second->dump(i->first);
+    }
+}