AOO410/main/sal/osl/all/printtrace.cxx

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 * to you under the Apache License, Version 2.0 (the
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#include "precompiled_sal.hxx"

#include "sal/config.h"

#include <cstdarg>
#include <cstdio>
#include <cstring>

#include <stdio.h> // snprintf, vsnprintf

#include "osl/diagnose.h"
#include "osl/thread.hxx"
#include "rtl/string.h"
#include "sal/types.h"

#include "printtrace.h"

void printTrace(unsigned long pid, char const * format, std::va_list arguments)
{
    char buf[1024];
    int n1 = snprintf(
        buf, sizeof buf, "Trace %lu/%" SAL_PRIuUINT32 ": \"", pid,
        osl::Thread::getCurrentIdentifier());
    OSL_ASSERT(
        n1 >= 0 &&
        (static_cast< unsigned int >(n1) <
         sizeof buf - RTL_CONSTASCII_LENGTH("\"...\n")));
    int n2 = sizeof buf - n1 - RTL_CONSTASCII_LENGTH("\"...\n");
    int n3 = vsnprintf(buf + n1, n2, format, arguments);
    if (n3 < 0) {
        std::strcpy(buf + n1, "\"???\n");
    } else if (n3 < n2) {
        std::strcpy(buf + n1 + n3, "\"\n");
    } else {
        std::strcpy(buf + n1 + n2 - 1, "\"...\n");
    }
    std::fputs(buf, stderr);
}