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#include <errno.h>
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "wlite_wchar.h"
int main(int argc, char **argv) {
int c;
wchar_t u = L'\0';
unsigned char s[7] = { 0 }; /* max utf-8 segment + nul char */
size_t length = 0;
ssize_t n = 0;
mbstate_t ps = { 0 };
const char *ctype;
ctype = setlocale(LC_CTYPE, "");
if (ctype == NULL) {
fputs("unsupported LC_CTYPE locale\n", stderr);
}
errno = 0; /* XXX: why does errno get set to 2 by 7.3's glibc here? */
for (;;) {
c = fgetc(stdin);
if (c == EOF) {
if (ferror(stdin)) perror(NULL);
break;
}
if (length >= sizeof(s)) abort();
s[length++] = c;
n = (ssize_t) mbrtowc(&u, s, length, &ps);
if (n == -1 || errno != 0) {
char msg[80];
/* skip over the bad byte */
if (sprintf(msg, "*** bad mbc skipped: \\x%02X\n",
(unsigned) (*s & 0xFF)) >= sizeof(msg)) abort();
perror(msg);
errno = 0;
length -= 1;
memmove(s, s + 1, sizeof(s) - n);
memset(s + length, 0, sizeof(s) - length); // debugger friendly
}
else if (n > 0) {
const char *fmt = NULL;
int uwidth = wcwidth(u);
length -= n;
memmove(s, s + n, sizeof(s) - n);
memset(s + length, 0, sizeof(s) - length); // debugger friendly
if (u < 0x20)
switch (u) {
case L'\a': fmt = "(U+%04lX)\t%d\t\\a\n"; break;
case L'\e': fmt = "(U+%04lX)\t%d\t\\e\n"; break;
case L'\f': fmt = "(U+%04lX)\t%d\t\\f\n"; break;
case L'\n': fmt = "(U+%04lX)\t%d\t\\n\n"; break;
case L'\t': fmt = "(U+%04lX)\t%d\t\\t\n"; break;
case L'\r': fmt = "(U+%04lX)\t%d\t\\r\n"; break;
case L'\v': fmt = "(U+%04lX)\t%d\t\\v\n"; break;
default: fmt = "(U+%04lX)\t%d\t\n"; break;
}
else if (u <= 0xFFFF) fmt = "(U+%04lX)\t%d\t%lc\n";
else fmt = "(U-%06lX)\t%d\t%lc\n";
if (printf(fmt, (unsigned long) u, uwidth, (wint_t) u) < 0) {
if (errno == EILSEQ) {
/* it's ok if we couldn't print a character within
* the current locale.
*/
printf("(unprintable with LC_CTYPE \"%s\")\n", ctype);
errno = 0;
}
else {
perror(NULL);
abort();
}
}
}
}
return 0;
}
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