progress bar

#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <math.h>
#include <stdlib.h>

#if defined(_MSC_VER) || defined(__WIN32__)
#else
#define HAVE_NL_LANGINFO	/* not on Windows, probably everywhere else */
#endif

#ifdef HAVE_NL_LANGINFO
#include <langinfo.h>
#endif


// trace output format and columns
#define TRACE_NCOLS 14
#define TRACE_COL_QUERYID 2
#define TRACE_COL_STATEFL 4
#define TRACE_COL_MALSTMT 13
#define TRACE_MAL_MAXPARAMS 3 // we don't need more than 3 params here

// size of the progress bar in characters
#define PROFILER_BARSYMB 60

static SOCKET profiler_socket;
#ifdef _MSC_VER
static HANDLE profiler_pthread;
#else
static pthread_t profiler_pthread;
#endif
static int profiler_needcleanup = 0;
static int profiler_armed = 0;

static char* profiler_symb_query = "X";
static char* profiler_symb_trans = "V";
static char* profiler_symb_bfree = "_";
static char* profiler_symb_bfull = "#";

// clear line and overwrite with spaces
void profiler_clearbar(void) {
	int bs;
	if (!profiler_needcleanup) return;
	for (bs=0; bs < PROFILER_BARSYMB + 3 + 6; bs++) printf("\b \b"); 
	profiler_needcleanup = 0;
}

void profiler_renderbar(size_t state, size_t total, char *symbol) {
	int bs;
	unsigned short percentage, symbols;

	profiler_clearbar();
	profiler_needcleanup = 1;

	percentage = (unsigned short) ceil((1.0 * 
		state / total) * 100);
	symbols = (unsigned short) (PROFILER_BARSYMB*(percentage/100.0));
	
	printf("%s ", symbol);
	for (bs=0; bs < symbols; bs++) printf("%s", profiler_symb_bfull);
	for (bs=0; bs < PROFILER_BARSYMB-symbols; bs++) printf("%s", profiler_symb_bfree); 
	printf(" %3u%% ", (unsigned int) percentage);
	fflush(NULL);
}

#ifdef HAVE_NL_LANGINFO
	if (strcasecmp(nl_langinfo(CODESET), "utf-8") == 0) {
		profiler_symb_query = "\342\237\262";	/* U+27F2 */
		profiler_symb_trans = "\342\206\223";	/* U+2193 */
		profiler_symb_bfree = "\342\226\221";	/* U+2591 */
		profiler_symb_bfull = "\342\226\210";	/* U+2588 */
	}
#endif