hyung-hwan
7f0ad74286
fixed a bug of passing a wrong buffer to qse_wcrtomb() in qse_wcsntombsn(). enhanced qse_tio_writembsn() and qse_tio_writewcsn()
90 lines
1.5 KiB
C
90 lines
1.5 KiB
C
/*
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* $Id$
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*/
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#include "stx.h"
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#include <qse/cmn/str.h>
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qse_word_t qse_stx_hashbytes (qse_stx_t* stx, const void* data, qse_word_t len)
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{
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qse_word_t h = 0;
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qse_byte_t* bp, * be;
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bp = (qse_byte_t*)data; be = bp + len;
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while (bp < be) h = h * 31 + *bp++;
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return h;
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}
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qse_word_t qse_stx_hashstr (qse_stx_t* stx, const qse_char_t* str)
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{
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qse_word_t h = 0;
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qse_byte_t* bp, * be;
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const qse_char_t* p = str;
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while (*p != QSE_T('\0'))
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{
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bp = (qse_byte_t*)p;
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be = bp + QSE_SIZEOF(qse_char_t);
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while (bp < be) h = h * 31 + *bp++;
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p++;
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}
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return h;
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}
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qse_word_t qse_stx_hashstrn (
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qse_stx_t* stx, const qse_char_t* str, qse_word_t len)
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{
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return qse_stx_hashbytes (stx, str, len * QSE_SIZEOF(*str));
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}
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qse_word_t qse_stx_hashobj (qse_stx_t* stx, qse_word_t ref)
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{
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qse_word_t hv;
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if (REFISINT(stx, ref))
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{
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qse_word_t tmp = REFTOINT(stx, ref);
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hv = qse_stx_hashbytes (stx, &tmp, QSE_SIZEOF(tmp));
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}
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else
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{
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switch (OBJTYPE(stx,ref))
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{
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case BYTEOBJ:
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hv = qse_stx_hashbytes (
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stx,
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BYTEPTR(stx,ref),
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BYTELEN(stx,ref)
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);
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break;
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case CHAROBJ:
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/* the additional null is not taken into account */
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hv = qse_stx_hashbytes (
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stx,
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&CHARAT(stx,ref,0),
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OBJSIZE(stx,ref) * QSE_SIZEOF(qse_char_t)
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);
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break;
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case WORDOBJ:
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hv = qse_stx_hashbytes (
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stx,
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&WORDAT(stx,ref,0),
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OBJSIZE(stx,ref) * QSE_SIZEOF(qse_word_t)
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);
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break;
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default:
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QSE_ASSERT (
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!"This must never happen"
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);
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break;
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}
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}
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return hv;
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}
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