/*
 *                                                           file: ssstore.cpp
 *
 *  Created on: Oct 3, 2009
 *      Author: mike
 */

#include <cstring>
#include "stringstore.hpp"

StringStore* StringStore::instance = NULL;  // initialization

// Gets unique instance of the string store, creating it
// if it doesn't already exist
StringStore&
StringStore::getStore() {
    if (instance==NULL)
    instance = new StringStore;
    return *instance;
}

//----------------------------------------------------------------------------
// Constructs new const null-terminated string from first len characters of s,
// places it in the StringStore repository, and returns pointer to it.
// Repository owns the new string and is responsible for its eventual deletion.
const char*
StringStore::put(const char* s, int len) {
    len++; // number of characters including '\0'.
    if (len > remain)
        throw "Sorry, string too long for string store";
    char* where = &letters[next];
    next += len;
    remain -= len;
    strncpy(where, s, len - 1);
    where[len - 1] = '\0';
    return where;
}