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/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
It is considered beerware. Prost. Skol. Cheers or whatever.
$id$ */
/* System */
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
/* Opentracker */
#include "ot_fmt.h"
void fmt_append(char **cursor, const char *end, const char *format, ...) {
va_list arguments;
size_t room;
int written;
if (*cursor >= end) {
*cursor = (char *)end;
return;
}
room = (size_t)(end - *cursor);
va_start(arguments, format);
written = vsnprintf(*cursor, room, format, arguments);
va_end(arguments);
if (written < 0)
return;
*cursor = (size_t)written >= room ? (char *)end : *cursor + written;
}
void fmt_bytes(char **cursor, const char *end, const void *bytes, size_t length) {
if (*cursor >= end || (size_t)(end - *cursor) < length) {
*cursor = (char *)end;
return;
}
memcpy(*cursor, bytes, length);
*cursor += length;
}
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