// Copyright 2021 Joe Drago. All rights reserved.

// SPDX-License-Identifier: BSD-2-Clause

#include "avif/internal.h"

#include <stdarg.h>

#include <stdio.h>

#include <string.h>

void avifDiagnosticsClearError(avifDiagnostics * diag)

{

    *diag->error = '\0';

}

#ifdef __clang__

__attribute__((__format__(__printf__, 2, 3)))

#endif

void avifDiagnosticsPrintf(avifDiagnostics * diag, const char * format, ...)

{

    if (!diag) {

        // It is possible this is NULL (e.g. calls to avifPeekCompatibleFileType())

        return;

    }

    if (*diag->error) {

        // There is already a detailed error set.

        return;

    }

    va_list args;

    va_start(args, format);

    vsnprintf(diag->error, AVIF_DIAGNOSTICS_ERROR_BUFFER_SIZE, format, args);

    diag->error[AVIF_DIAGNOSTICS_ERROR_BUFFER_SIZE - 1] = '\0';

    va_end(args);

}