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/* Copyright (c) 2012 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <fstream>
#include "Assert.h"
#include "Config.h"
using namespace std;
namespace LibUtil
{
void readFile(const char *filename_, map<String, String> &config)
{
std::ifstream ist_(filename_);
// Set a Config from ist_
// Read in keys and values, keeping internal whitespace
typedef String::size_type pos;
const String& delimiter = "=";
const String& comment = "#";
const String& sentry = "End";
const pos skip = delimiter.length(); // length of separator
String nextline = ""; // might need to read ahead to see where value ends
while(ist_ || nextline.length() > 0)
{
// Read an entire line at a time
String line;
if(nextline.length() > 0)
{
line = nextline; // we read ahead; use it now
nextline = "";
}
else
{
//std::getline(ist_, line);
safeGetline(ist_, line);
}
// Ignore comments and the spaces on both ends
line = line.substr(0, line.find(comment));
line.trim();
// Check for end of file sentry
if((sentry != "") && (line.find(sentry) != String::npos)) return;
if(line.length() == 0)
continue;
// Parse the line if it contains a delimiter
pos delimPos = line.find(delimiter);
ASSERT((delimPos < String::npos), "Invalid config line: '" + line + "'");
// Extract the key
String key = line.substr(0, delimPos);
line.replace(0, delimPos+skip, "");
// See if value continues on the next line
// Stop at blank line, next line with a key, end of stream,
// or end of file sentry
bool terminate = false;
while(!terminate && ist_)
{
if(line.at(line.size() - 1) == '\\')
line.erase(line.size() - 1);
else
break;
//std::getline(ist_, nextline);
safeGetline(ist_, nextline);
terminate = true;
String nlcopy = nextline;
nlcopy.trim();
if(nlcopy == "") continue;
nextline = nextline.substr(0, nextline.find(comment));
//if(nextline.find(delim) != String::npos)
// continue;
if((sentry != "") && (nextline.find(sentry) != String::npos))
continue;
//nlcopy = nextline;
//nlcopy.trim();
//if(nlcopy != "") line += "\n";
line += nextline;
nextline = "";
terminate = false;
}
// Store key and value
key.trim();
line.trim();
config[key] = line; // overwrites if key is repeated
}
}
}
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