src/io/command_line.cpp

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#include <malloc.h>
#include "command_line.h"
#ifdef HAVE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif //READLINE

void CommandLine::Init(const char* _history_file)
{
        history_file = NULL;
#ifdef HAVE_READLINE_HISTORY
        if(_history_file)
        {
                history_file = strdup(_history_file);
                read_history(history_file);
        }
#endif
}

CommandLine::~CommandLine()
{
#ifdef HAVE_READLINE_HISTORY
        if(history_file)
        {
                write_history(history_file);
                free(history_file);
        }
#endif
}

std::string CommandLine::GetLine(std::string prompt)
{
        char* line = NULL;
#ifdef HAVE_LIBREADLINE
        while(true)
        {
                line = readline(prompt.c_str());
                if(line != NULL && *line == '\0')
                        continue;
                break;
        }
        if(line)
                add_history(line);
#else
        size_t len = 0;
        printf("%s", prompt.c_str());

        if(getline(&line, &len, stdin) == -1)
                return std::string("");
        
        // strip the \n if line != ""
        if(*line)
                line[strlen(line) - 1] = '\0';
#endif
        if(line)
        {
                std::string str(line);
                free(line);
                return str;
        }
        return std::string("");
}

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