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/*
* Fixed boot banner — edit source only; not INI / CDC.
* Always printed once after USB CDC ready (main); quiet never suppresses it.
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "banner.h"
#include "version.h"
#include "afsk_bitbang.h"
#include <stdio.h>
#include <string.h>
/* Fixed CDC column width for centered serial look (40–48). */
#define BANNER_WIDTH 44
/** Display columns (UTF-8 code points ≈ 1 col; ASCII-safe). */
static size_t banner_cols(const char *s)
{
size_t cols = 0;
while (*s) {
unsigned char c = (unsigned char)*s++;
if ((c & 0x80u) == 0u) {
cols++;
} else if ((c & 0xE0u) == 0xC0u) {
if (*s) {
s++;
}
cols++;
} else if ((c & 0xF0u) == 0xE0u) {
if (*s) {
s++;
}
if (*s) {
s++;
}
cols++;
} else if ((c & 0xF8u) == 0xF0u) {
if (*s) {
s++;
}
if (*s) {
s++;
}
if (*s) {
s++;
}
cols++;
} else {
cols++;
}
}
return cols;
}
static void banner_line(const char *text)
{
size_t cols = banner_cols(text);
size_t pad = 0;
if (cols < BANNER_WIDTH) {
pad = (BANNER_WIDTH - cols) / 2u;
}
for (size_t i = 0; i < pad; i++) {
putchar(' ');
}
fputs(text, stdout);
fputs("\r\n", stdout);
}
void banner_print(void)
{
/* Fixed boot banner — edit source only */
char line[BANNER_WIDTH + 8];
snprintf(line, sizeof(line), "T-Modem-c1224 %s", C1224_FW_VERSION);
banner_line(line);
snprintf(line, sizeof(line), "USB KISS Half-TNC · AFSK %u",
(unsigned)afsk_bitrate());
banner_line(line);
banner_line("Non-Profit · GNU GPLv3 · AS-IS");
banner_line("https://github.com/ngteq");
}
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