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version 1.11, 2008/12/02 09:00:52
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version 1.12, 2009/12/15 11:39:34
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| #include <Pegasus/Common/Config.h> | #include <Pegasus/Common/Config.h> |
| #include <Pegasus/Common/AtomicInt.h> | #include <Pegasus/Common/AtomicInt.h> |
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#include <Pegasus/Common/CommonUTF.h> |
| #include <new> | #include <new> |
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| PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
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| StringThrowOutOfBounds(); | StringThrowOutOfBounds(); |
| } | } |
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template<class P, class Q> |
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static void _copy(P* p, const Q* q, size_t n) |
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{ |
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// The following employs loop unrolling for efficiency. Please do not |
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// eliminate. |
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|
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while (n >= 8) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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p[2] = q[2]; |
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p[3] = q[3]; |
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p[4] = q[4]; |
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p[5] = q[5]; |
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p[6] = q[6]; |
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p[7] = q[7]; |
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p += 8; |
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q += 8; |
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n -= 8; |
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} |
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while (n >= 4) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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p[2] = q[2]; |
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p[3] = q[3]; |
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p += 4; |
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q += 4; |
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n -= 4; |
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} |
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while (n--) |
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*p++ = *q++; |
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} |
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static size_t _copyFromUTF8( |
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Uint16* dest, |
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const char* src, |
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size_t n, |
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size_t& utf8_error_index) |
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{ |
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Uint16* p = dest; |
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const Uint8* q = (const Uint8*)src; |
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|
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// Process leading 7-bit ASCII characters (to avoid UTF8 overhead later). |
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// Use loop-unrolling. |
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|
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while (n >=8 && ((q[0]|q[1]|q[2]|q[3]|q[4]|q[5]|q[6]|q[7]) & 0x80) == 0) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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p[2] = q[2]; |
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p[3] = q[3]; |
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p[4] = q[4]; |
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p[5] = q[5]; |
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p[6] = q[6]; |
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p[7] = q[7]; |
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p += 8; |
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q += 8; |
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n -= 8; |
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} |
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while (n >=4 && ((q[0]|q[1]|q[2]|q[3]) & 0x80) == 0) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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p[2] = q[2]; |
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p[3] = q[3]; |
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p += 4; |
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q += 4; |
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n -= 4; |
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} |
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switch (n) |
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{ |
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case 0: |
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return p - dest; |
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case 1: |
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if (q[0] < 128) |
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{ |
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p[0] = q[0]; |
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return p + 1 - dest; |
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} |
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break; |
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case 2: |
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if (((q[0]|q[1]) & 0x80) == 0) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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return p + 2 - dest; |
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} |
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break; |
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case 3: |
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if (((q[0]|q[1]|q[2]) & 0x80) == 0) |
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{ |
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p[0] = q[0]; |
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p[1] = q[1]; |
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p[2] = q[2]; |
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return p + 3 - dest; |
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} |
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break; |
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} |
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// Process remaining characters. |
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while (n) |
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{ |
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// Optimize for 7-bit ASCII case. |
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if (*q < 128) |
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{ |
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*p++ = *q++; |
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n--; |
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} |
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else |
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{ |
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Uint8 c = UTF_8_COUNT_TRAIL_BYTES(*q) + 1; |
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if (c > n || !isValid_U8(q, c) || |
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UTF8toUTF16(&q, q + c, &p, p + n) != 0) |
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{ |
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utf8_error_index = q - (const Uint8*)src; |
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return size_t(-1); |
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} |
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n -= c; |
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} |
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} |
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return p - dest; |
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} |
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static inline size_t _convert( |
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Uint16* p, const char* q, size_t n, size_t& utf8_error_index) |
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{ |
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#ifdef PEGASUS_STRING_NO_UTF8 |
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_copy(p, q, n); |
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return n; |
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#else |
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return _copyFromUTF8(p, q, n, utf8_error_index); |
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#endif |
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} |
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| PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |
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| #endif /* _Pegasus_StringRep_h */ | #endif /* _Pegasus_StringRep_h */ |
Return to
StringRep.h
CVS log
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