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/* libfmt/libmisc.c - Integrate pico-fmt with libmisc
*
* Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <stdarg.h> /* for va_list, va_start(), va_end() */
#include <stdio.h> /* for vprintf(), putchar(), fflush() */
#if LIB_PICO_STDIO
#include <pico/stdio.h> /* for stdio_putchar_raw() */
#endif
#include <libmisc/macro.h> /* for LM_UNUSED() */
#include <libmisc/_intercept.h> /* for __lm_printf() */
#include <libfmt/fmt.h> /* for fmt_vfctprintf() */
#if !LIB_PICO_STDIO
static void libfmt_libc_fct(char character, void *LM_UNUSED(arg)) {
putchar(character);
}
#endif
size_t __lm_printf(const char *format, ...) {
va_list va;
va_start(va, format);
#if LIB_PICO_STDIO
/* pico_stdio has already intercepted vprintf for us, and
* their stdio_buffered_printer() is better than our
* libfmt_libc_fct() because buffering. */
size_t ret = (size_t) vprintf(format, va);
#else
size_t ret = (size_t) fmt_vfctprintf(libfmt_libc_fct, NULL, format, va);
fflush(stdout);
#endif
va_end(va);
return ret;
}
static void libfmt_conv_formatter(struct fmt_state *state) {
lo_interface fmt_formatter obj = va_arg(*state->args, lo_interface fmt_formatter);
LO_CALL(obj, format, state);
}
[[gnu::constructor]]
static void libfmt_install_formatter(void) {
fmt_install('v', libfmt_conv_formatter);
}
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