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// This file is part of the mcpc library.
//
// Copyright (C) 2025 Michael Lee <micl2e2 AT proton.me>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "retbuf.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mjson.h"
retbuf_t
retbuf_new (size_t cap, size_t *len)
{
retbuf_t x = {
.cap = cap,.buf0 = malloc (cap),.len = len
};
return x;
}
void
retbuf_free (retbuf_t rtbf)
{
free (rtbf.buf0);
}
uint8_t
rtbuf_printf_adv (retbuf_t rtbf, size_t advl, const char8_t *u8str, ...)
{
va_list args;
int printed;
size_t remaining;
(void) advl;
if (rtbf.buf0 == nullptr || rtbf.len == nullptr || *rtbf.len >= rtbf.cap)
return 1;
va_start (args, u8str);
remaining = rtbf.cap - *rtbf.len;
printed = vsnprintf (rtbf.buf0 + *rtbf.len, remaining, (const char *) u8str, args);
va_end (args);
if (printed < 0 || (size_t) printed >= remaining)
{
*rtbf.len = rtbf.cap;
return 1;
}
*rtbf.len += (size_t) printed;
return 0;
}
uint8_t
rtbuf_printf (retbuf_t rtbf, const char8_t *u8str, ...)
{
va_list args;
int printed;
size_t remaining;
if (rtbf.buf0 == nullptr || rtbf.len == nullptr || *rtbf.len >= rtbf.cap)
return 1;
va_start (args, u8str);
remaining = rtbf.cap - *rtbf.len;
printed = vsnprintf (rtbf.buf0 + *rtbf.len, remaining, (const char *) u8str, args);
va_end (args);
if (printed < 0 || (size_t) printed >= remaining)
{
*rtbf.len = rtbf.cap;
return 1;
}
*rtbf.len += (size_t) printed;
return 0;
}
uint8_t
rtbuf_printf_mjfmt (retbuf_t rtbf, const char8_t *fmt8, ...)
{
va_list args;
va_start (args, fmt8);
const char *fmt = (const char *) fmt8;
struct mjson_fixedbuf fb = { rtbf.buf0, (int)rtbf.cap, (int)*rtbf.len };
int advl = mjson_vprintf (&mjson_print_fixed_buf, &fb, fmt, &args);
if (advl < 0 || (size_t) advl > rtbf.cap - *rtbf.len)
*rtbf.len = rtbf.cap;
else
*rtbf.len += (size_t) advl;
va_end (args);
return 0;
}
// TODO change _printf_ use this one
u8_t
rtbuf_vprintf_mjfmt (retbuf_t rtbf, const char8_t *fmt8, va_list *vargs)
{
const char *fmt = (const char *) fmt8;
struct mjson_fixedbuf fb = { rtbf.buf0, (int)rtbf.cap, (int)*rtbf.len };
int advl = mjson_vprintf (&mjson_print_fixed_buf, &fb, fmt, vargs); // TODO: __va_list_tag (*)[1]’
if (advl < 0 || (size_t) advl > rtbf.cap - *rtbf.len)
*rtbf.len = rtbf.cap;
else
*rtbf.len += (size_t) advl;
return 0;
}
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