Update README.md

[proxmark3-svn] / client / ui.c

//-----------------------------------------------------------------------------
// Copyright (C) 2009 Michael Gernoth <michael at gernoth.net>
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// UI utilities
//-----------------------------------------------------------------------------

#include <stdbool.h>
#ifndef EXTERNAL_PRINTANDLOG
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <readline/readline.h>
#include <pthread.h>
#endif

#include "ui.h"

double CursorScaleFactor = 1;
int PlotGridX=0, PlotGridY=0, PlotGridXdefault= 64, PlotGridYdefault= 64, CursorCPos= 0, CursorDPos= 0;
int offline;
int flushAfterWrite = 0;  //buzzy
int GridOffset = 0;
bool GridLocked = false;
bool showDemod = true;

static char *logfilename = "proxmark3.log";

#ifndef EXTERNAL_PRINTANDLOG
// Declared in proxmark3.c
extern pthread_mutex_t print_lock;

void PrintAndLog(char *fmt, ...)
{
        char *saved_line;
        int saved_point;
        va_list argptr, argptr2;
        static FILE *logfile = NULL;
        static int logging=1;

        // lock this section to avoid interlacing prints from different threads
        pthread_mutex_lock(&print_lock);
  
        if (logging && !logfile) {
                logfile=fopen(logfilename, "a");
                if (!logfile) {
                        fprintf(stderr, "Can't open logfile, logging disabled!\n");
                        logging=0;
                }
        }

#ifdef RL_STATE_READCMD
        // We are using GNU readline.
        int need_hack = (rl_readline_state & RL_STATE_READCMD) > 0;

        if (need_hack) {
                saved_point = rl_point;
                saved_line = rl_copy_text(0, rl_end);
                rl_save_prompt();
                rl_replace_line("", 0);
                rl_redisplay();
        }
#else
        // We are using libedit (OSX), which doesn't support this flag.
        int need_hack = 0;
#endif
        
        va_start(argptr, fmt);
        va_copy(argptr2, argptr);
        vprintf(fmt, argptr);
        printf("          "); // cleaning prompt
        va_end(argptr);
        printf("\n");

        if (need_hack) {
                rl_restore_prompt();
                rl_replace_line(saved_line, 0);
                rl_point = saved_point;
                rl_redisplay();
                free(saved_line);
        }
        
        if (logging && logfile) {
                vfprintf(logfile, fmt, argptr2);
                fprintf(logfile,"\n");
                fflush(logfile);
        }
        va_end(argptr2);

        if (flushAfterWrite == 1)  //buzzy
        {
                fflush(NULL);
        }
        //release lock
        pthread_mutex_unlock(&print_lock);  
}
#endif

void SetLogFilename(char *fn)
{
  logfilename = fn;
}