qprintf.c

/*****************************************************************************

 qprintf.c - module to emulate a printf with a possible quiet (disable mode.)

 A global variable GifNoisyPrint controls the printing of this routine
 
SPDX-License-Identifier: MIT

*****************************************************************************/


#include <stdio.h>
#include <stdbool.h>
#include <stdarg.h>

#include "gif_lib.h"

bool GifNoisyPrint = false;

/*****************************************************************************
 Same as fprintf to stderr but with optional print.
******************************************************************************/
void
GifQprintf(char *Format, ...) {
    va_list ArgPtr;

    va_start(ArgPtr, Format);

    if (GifNoisyPrint) {
	char Line[128];
	(void)vsnprintf(Line, sizeof(Line), Format, ArgPtr);
	(void)fputs(Line, stderr);
    }

    va_end(ArgPtr);
}

void
PrintGifError(int ErrorCode) {
    const char *Err = GifErrorString(ErrorCode);

    if (Err != NULL)
        fprintf(stderr, "GIF-LIB error: %s.\n", Err);
    else
        fprintf(stderr, "GIF-LIB undefined error %d.\n", ErrorCode);
}

/* end */