blob: 077d58d32fd6f03f4ad8f8b3d73e3d6559c58f8d [file] [log] [blame]
/* vi: set sw=4 ts=4: */
/*
* Unicode support routines.
*
* Copyright (C) 2010 Denys Vlasenko
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
#include "unicode.h"
const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str)
{
char *dst;
const char *s;
s = str;
while (1) {
unsigned char c = *s;
if (c == '\0') {
/* 99+% of inputs do not need conversion */
if (stats) {
stats->byte_count = (s - str);
stats->unicode_count = (s - str);
stats->unicode_width = (s - str);
}
return str;
}
if (c < ' ')
break;
if (c >= 0x7f)
break;
s++;
}
#if ENABLE_UNICODE_SUPPORT
dst = unicode_conv_to_printable(stats, str);
#else
{
char *d = dst = xstrdup(str);
while (1) {
unsigned char c = *d;
if (c == '\0')
break;
if (c < ' ' || c >= 0x7f)
*d = '?';
d++;
}
if (stats) {
stats->byte_count = (d - dst);
stats->unicode_count = (d - dst);
stats->unicode_width = (d - dst);
}
}
#endif
return auto_string(dst);
}