utf16.c File Reference

#include <rz_types.h>
#include <rz_util.h>

Go to the source code of this file.

Functions
RZ_API int	rz_utf16_decode (const ut8 *ptr, int ptrlen, RzRune *ch, bool bigendian)
RZ_API int	rz_utf16le_decode (const ut8 *ptr, int ptrlen, RzRune *ch)
RZ_API int	rz_utf16be_decode (const ut8 *ptr, int ptrlen, RzRune *ch)
RZ_API int	rz_utf16le_encode (ut8 *ptr, RzRune ch)

Function Documentation

rz_utf16_decode()

RZ_API int rz_utf16_decode	(	const ut8 *	ptr,
		int	ptrlen,
		RzRune *	ch,
		bool	bigendian
	)

Definition at line 8 of file utf16.c.

                                                                                   {
    if (ptrlen < 1) {
        return 0;
    }
    int high = bigendian ? 0 : 1;
    int low = bigendian ? 1 : 0;
    if (ptrlen > 3 && (ptr[high] & 0xdc) == 0xd8 && (ptr[high + 2] & 0xdc) == 0xdc) {
        if (ch) {
            *ch = ((ptr[high] & 3) << 24 | ptr[low] << 16 | (ptr[high + 2] & 3) << 8 | ptr[low + 2]) + 0x10000;
        }
        return 4;
    }
    if (ptrlen > 1 && ptr[high]) {
        if (ch) {
            *ch = ptr[high] << 8 | ptr[low];
        }
        return 2;
    }
    if (ptrlen > 1) {
        if (ch) {
            *ch = (ut32)ptr[low];
        }
        return 1;
    }
    return 0;
}

Referenced by rz_str_escape_utf(), rz_utf16be_decode(), and rz_utf16le_decode().

rz_utf16be_decode()

RZ_API int rz_utf16be_decode	(	const ut8 *	ptr,
		int	ptrlen,
		RzRune *	ch
	)

Definition at line 41 of file utf16.c.

                                                                     {
    return rz_utf16_decode(ptr, ptrlen, ch, true);
}

References rz_utf16_decode().

Referenced by process_one_string(), and rz_str_stringify_raw_buffer().

rz_utf16le_decode()

RZ_API int rz_utf16le_decode	(	const ut8 *	ptr,
		int	ptrlen,
		RzRune *	ch
	)

Definition at line 36 of file utf16.c.

                                                                     {
    return rz_utf16_decode(ptr, ptrlen, ch, false);
}

References rz_utf16_decode().

Referenced by process_one_string(), and rz_str_stringify_raw_buffer().

rz_utf16le_encode()

RZ_API int rz_utf16le_encode	(	ut8 *	ptr,
		RzRune	ch
	)

Definition at line 46 of file utf16.c.

                                                  {
    if (ch < 0x10000) {
        ptr[0] = ch & 0xff;
        ptr[1] = ch >> 8 & 0xff;
        return 2;
    }
    if (ch < 0x110000) {
        ch -= 0x10000;
        RzRune high = 0xd800 + (ch >> 10 & 0x3ff);
        RzRune low = 0xdc00 + (ch & 0x3ff);
        ptr[0] = high & 0xff;
        ptr[1] = high >> 8 & 0xff;
        ptr[2] = low & 0xff;
        ptr[3] = low >> 8 & 0xff;
        return 4;
    }
    return 0;
}

Referenced by rz_search_keyword_new_wide().