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/*
* Copyright 2021 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <alloca.h>
#include <stdarg.h>
#include <stdio.h>
#include <emscripten.h>
#include <emscripten/console.h>
#include "emscripten_internal.h"
static void vlogf(const char* fmt, va_list ap, void (*callback)(const char*)) {
va_list ap2;
va_copy(ap2, ap);
size_t len = vsnprintf(0, 0, fmt, ap2);
va_end(ap2);
char* buf = alloca(len + 1);
vsnprintf(buf, len + 1, fmt, ap);
callback(buf);
}
void emscripten_console_logf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_console_log);
va_end(ap);
}
void emscripten_console_errorf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_console_error);
va_end(ap);
}
void emscripten_console_warnf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_console_warn);
va_end(ap);
}
void emscripten_console_tracef(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_console_trace);
va_end(ap);
}
void emscripten_outf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_out);
va_end(ap);
}
void emscripten_errf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_err);
va_end(ap);
}
#ifndef NDEBUG
void emscripten_dbgf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_dbg);
va_end(ap);
}
void emscripten_dbg_backtracef(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
vlogf(fmt, ap, &emscripten_dbg_backtrace);
va_end(ap);
}
#endif
void emscripten_log(int flags, const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
// Note: we have to inline `vlogf` here instead of using it, because
// `_emscripten_log_formatted` has a different signature than the
// `callback` parameter of `vlogf`, and we can't use it without a callback
// as we need `alloca` to remain on stack.
va_list ap2;
va_copy(ap2, ap);
size_t len = vsnprintf(0, 0, fmt, ap2);
va_end(ap2);
char* buf = alloca(len + 1);
vsnprintf(buf, len + 1, fmt, ap);
va_end(ap);
_emscripten_log_formatted(flags, buf);
}
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