/* This function returns a newly allocated wide string containing the USB
device string numbered by the index. The returned string must be freed
by using free(). */
static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
{
char buf[512];
int len;
wchar_t *str = NULL;
wchar_t wbuf[256];
/* iconv variables */
iconv_t ic;
size_t inbytes;
size_t outbytes;
size_t res;
#ifdef __FreeBSD__
const char *inptr;
#else
char *inptr;
#endif
char *outptr;
/* Determine which language to use. */
uint16_t lang;
lang = get_usb_code_for_current_locale();
if (!is_language_supported(dev, lang))
lang = get_first_language(dev);
/* Get the string from libusb. */
len = libusb_get_string_descriptor(dev,
idx,
lang,
(unsigned char*)buf,
sizeof(buf));
if (len < 0)
return NULL;
/* buf does not need to be explicitly NULL-terminated because
it is only passed into iconv() which does not need it. */
/* Initialize iconv. */
ic = iconv_open("WCHAR_T", "UTF-16LE");
if (ic == (iconv_t)-1) {
LOG("iconv_open() failed\n");
return NULL;
}
/* Convert to native wchar_t (UTF-32 on glibc/BSD systems).
Skip the first character (2-bytes). */
inptr = buf+2;
inbytes = len-2;
outptr = (char*) wbuf;
outbytes = sizeof(wbuf);
res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
if (res == (size_t)-1) {
LOG("iconv() failed\n");
goto err;
}
/* Write the terminating NULL. */
wbuf[sizeof(wbuf)/sizeof(wbuf[0])-1] = 0x00000000;
if (outbytes >= sizeof(wbuf[0]))
*((wchar_t*)outptr) = 0x00000000;
/* Allocate and copy the string. */
str = wcsdup(wbuf);
err:
iconv_close(ic);
return str;
}
/* This function returns a newly allocated wide string containing the USB
device string numbered by the index. The returned string must be freed
by using free(). */
static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
{
char buf[512];
int len;
wchar_t *str = NULL;
wchar_t wbuf[256];
/* iconv variables */
iconv_t ic;
size_t inbytes;
size_t outbytes;
size_t res;
char *inptr;
char *outptr;
/* Determine which language to use. */
uint16_t lang;
lang = get_usb_code_for_current_locale();
if (!is_language_supported(dev, lang))
lang = get_first_language(dev);
/* Get the string from libusb. */
len = libusb_get_string_descriptor(dev,
idx,
lang,
(unsigned char*)buf,
sizeof(buf));
if (len < 0)
return NULL;
buf[sizeof(buf)-1] = '\0';
if (len+1 < sizeof(buf))
buf[len+1] = '\0';
/* Initialize iconv. */
ic = iconv_open("UTF-32", "UTF-16");
if (ic == (iconv_t)-1)
return NULL;
/* Convert to UTF-32 (wchar_t on glibc systems).
Skip the first character (2-bytes). */
inptr = buf+2;
inbytes = len-2;
outptr = (char*) wbuf;
outbytes = sizeof(wbuf);
res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
if (res == (size_t)-1)
goto err;
/* Write the terminating NULL. */
wbuf[sizeof(wbuf)/sizeof(wbuf[0])-1] = 0x00000000;
if (outbytes >= sizeof(wbuf[0]))
*((wchar_t*)outptr) = 0x00000000;
/* Allocate and copy the string. */
str = wcsdup(wbuf+1);
err:
iconv_close(ic);
return str;
}
/* This function returns a newly allocated wide string containing the USB
device string numbered by the index. The returned string must be freed
by using free(). */
static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
{
char buf[512];
int len;
wchar_t *str = NULL;
#ifndef __ANDROID__ /* we don't use iconv on Android */
wchar_t wbuf[256];
/* iconv variables */
iconv_t ic;
size_t inbytes;
size_t outbytes;
size_t res;
#ifdef __FreeBSD__
const char *inptr;
#else
char *inptr;
#endif
char *outptr;
#endif
/* Determine which language to use. */
uint16_t lang;
lang = get_usb_code_for_current_locale();
if (!is_language_supported(dev, lang))
lang = get_first_language(dev);
/* Get the string from libusb. */
len = libusb_get_string_descriptor(dev,
idx,
lang,
(unsigned char*)buf,
sizeof(buf));
if (len < 0)
return NULL;
#ifdef __ANDROID__
/* Bionic does not have iconv support nor wcsdup() function, so it
has to be done manually. The following code will only work for
code points that can be represented as a single UTF-16 character,
and will incorrectly convert any code points which require more
than one UTF-16 character.
Skip over the first character (2-bytes). */
len -= 2;
str = malloc((len / 2 + 1) * sizeof(wchar_t));
int i;
for (i = 0; i < len / 2; i++) {
str[i] = buf[i * 2 + 2] | (buf[i * 2 + 3] << 8);
}
str[len / 2] = 0x00000000;
#else
/* buf does not need to be explicitly NULL-terminated because
it is only passed into iconv() which does not need it. */
/* Initialize iconv. */
ic = iconv_open("WCHAR_T", "UTF-16LE");
if (ic == (iconv_t)-1) {
LOG("iconv_open() failed\n");
return NULL;
}
/* Convert to native wchar_t (UTF-32 on glibc/BSD systems).
Skip the first character (2-bytes). */
inptr = buf+2;
inbytes = len-2;
outptr = (char*) wbuf;
outbytes = sizeof(wbuf);
res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
if (res == (size_t)-1) {
LOG("iconv() failed\n");
goto err;
}
/* Write the terminating NULL. */
wbuf[sizeof(wbuf)/sizeof(wbuf[0])-1] = 0x00000000;
if (outbytes >= sizeof(wbuf[0]))
*((wchar_t*)outptr) = 0x00000000;
/* Allocate and copy the string. */
str = wcsdup(wbuf);
err:
iconv_close(ic);
#endif
return str;
}
