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#if HAVE_CONFIG_H
# include "config.h"
#endif
#ifndef HAVE_WC_FUNCS
#include <sys/types.h>
#include <errno.h>
#ifndef EILSEQ
#define EILSEQ EINVAL
#endif
int mutt_wctoutf8 (char *s, unsigned int c, size_t buflen)
{
if (c < (1 << 7))
{
if (s && buflen >= 1)
*s++ = c;
return 1;
}
else if (c < (1 << 11))
{
if (s && buflen >= 2)
{
*s++ = 0xc0 | (c >> 6);
*s++ = 0x80 | (c & 0x3f);
}
return 2;
}
else if (c < (1 << 16))
{
if (s && buflen >= 3)
{
*s++ = 0xe0 | (c >> 12);
*s++ = 0x80 | ((c >> 6) & 0x3f);
*s++ = 0x80 | (c & 0x3f);
}
return 3;
}
else if (c < (1 << 21))
{
if (s && buflen >= 4)
{
*s++ = 0xf0 | (c >> 18);
*s++ = 0x80 | ((c >> 12) & 0x3f);
*s++ = 0x80 | ((c >> 6) & 0x3f);
*s++ = 0x80 | (c & 0x3f);
}
return 4;
}
else if (c < (1 << 26))
{
if (s && buflen >= 5)
{
*s++ = 0xf8 | (c >> 24);
*s++ = 0x80 | ((c >> 18) & 0x3f);
*s++ = 0x80 | ((c >> 12) & 0x3f);
*s++ = 0x80 | ((c >> 6) & 0x3f);
*s++ = 0x80 | (c & 0x3f);
}
return 5;
}
else if (c < (1 << 31))
{
if (s && buflen >= 6)
{
*s++ = 0xfc | (c >> 30);
*s++ = 0x80 | ((c >> 24) & 0x3f);
*s++ = 0x80 | ((c >> 18) & 0x3f);
*s++ = 0x80 | ((c >> 12) & 0x3f);
*s++ = 0x80 | ((c >> 6) & 0x3f);
*s++ = 0x80 | (c & 0x3f);
}
return 6;
}
errno = EILSEQ;
return -1;
}
#endif /* !HAVE_WC_FUNCS */
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