diff options
Diffstat (limited to 'squirrel_3_0_1_stable/_OLD_sqplus/SqPlusOCharBuf.h')
| -rw-r--r-- | squirrel_3_0_1_stable/_OLD_sqplus/SqPlusOCharBuf.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusOCharBuf.h b/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusOCharBuf.h new file mode 100644 index 000000000..24fe16b16 --- /dev/null +++ b/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusOCharBuf.h @@ -0,0 +1,193 @@ +
+#ifndef SQPLUS_OCHARBUF_H
+#define SQPLUS_OCHARBUF_H
+
+// Conversion routines between different character encodings, to be used in
+// Push/Get/Match handlers of SqPlus. It enables using both of char* and
+// wchar_t* as function arguments.
+//
+// When converting from wchar_t to char, the choice is between using a Latin1
+// or a UTF8 representation in 8-bit mode. This is probably most useful if
+// Squirrel is compiled in ANSI mode and the app uses some wchar_t strings
+// (UNICODE mode on Win32).
+//
+
+// A char is either
+// - A Latin1 character (first code page, coincides with Unicode points 0..255)
+// - Part of an UTF8 character
+//
+// Note: SQUTF8 requires Squirrel sources that have been patched for UTF8 strings
+// internally (when converting function arguments).
+
+#ifndef SQUTF8
+ // Default to Latin1 conversion
+ //#undef SQPLUS_USE_LATIN1
+ #ifndef SQPLUS_USE_LATIN1
+ #define SQPLUS_USE_LATIN1 1
+ #endif
+#else
+ // Using Squirrel with internal UTF8 string encoding
+ //#undef SQPLUS_USE_LATIN1
+ #ifndef SQPLUS_USE_LATIN1
+ #define SQPLUS_USE_LATIN1 0
+ #endif
+#endif
+
+
+// The various ol_... functions sets up for a conversion scheme
+// that can be used in both wchar_t => char and char => wchar_t.
+int ol_strlen(const wchar_t* pwc);
+int ol_buflen(const wchar_t* pwc);
+int ol_charlen(const wchar_t* pwc);
+int ol_char(const wchar_t* pwc);
+bool ol_writechar(wchar_t*& pwc, int ch);
+
+int ol_strlen(const char* pc);
+int ol_buflen(const char* pc);
+int ol_charlen(const char* pc);
+int ol_char(const char* pc);
+bool ol_writechar(char*& pc, int ch);
+
+#ifdef SQUNICODE
+ // SQChar is wchar_t, convert to/from either Latin1 or UTF8
+ typedef char SQOtherChar;
+#else
+ // SQChar is char, convert to/from wchar_t
+ typedef wchar_t SQOtherChar;
+#endif
+
+
+// Buffer to hold a string and release it in destructor.
+// SQT is input character type
+// SQOT is the opposite type of SQChar
+// If 'try_borrow' is set, it will not allocate a new buffer when no
+// conversion is done, it will just keep the input pointer (beware).
+template<class SQT, class SQOT, bool use_latin1>
+struct SQCharBufImpl {
+
+ // Allocate a buffer from string of same type
+ SQCharBufImpl(const SQT *poc=NULL, bool try_borrow=true ) : m_poc(0), m_own(false) {
+ Init( poc, try_borrow );
+ }
+
+ // This does conversion from other char type
+ SQCharBufImpl(const SQOT *ps, bool try_borrow=false ) : m_poc(0), m_own(false) {
+ Init( ps ); // Cannot borrow pointer when doing conversion
+ }
+
+ void Init( const SQT *poc, bool try_borrow ){
+ m_own = !try_borrow;
+ if( try_borrow ){
+ m_poc = (SQT*)poc;
+ }
+ else {
+ int sl = poc ? ol_buflen(poc) : 0;
+ if( poc ){
+ m_poc = poc ? new SQT[sl+1] : NULL;
+ if( m_poc ) memcpy( m_poc, poc, (sl+1)*sizeof(SQT) );
+ }
+ else
+ m_poc = NULL;
+ }
+ }
+
+ void Init( const SQOT *ps ){
+ m_own = true;
+ if( ps ){
+ int sl = ps ? ol_strlen(ps) : 0; // Length of string in characters (not bytes)
+ int scl = 0; // Length of converted string in char/wchar_t count
+ // How much storage needed?
+ if( !use_latin1 && sizeof(SQT)<sizeof(SQOT) ){
+ // Converting wchar_t => UTF8
+ const SQOT *ps1 = ps; // It is wchar_t* here
+ SQT tmp_buf[8];
+ SQT *ptmp;
+ while( *ps1 ){
+ ptmp = tmp_buf;
+ if( ol_writechar(ptmp,*ps1++) )
+ scl += ol_charlen(tmp_buf);
+ else
+ scl++;
+ }
+ }
+ else scl = sl; // Converting to wchar_t or Latin1, keep length
+
+ m_poc = new SQT[scl+1];
+ if( !m_poc ) return;
+
+ // Convert
+ SQT *poc = m_poc;
+ while( *ps ){
+ ol_writechar( poc, ol_char(ps) );
+ ps += ol_charlen(ps);
+ }
+ *poc = 0; // Terminating zero
+ }
+ else
+ m_poc = NULL;
+ }
+
+ ~SQCharBufImpl(){ Release(); }
+
+ void Release( ){
+ if(m_poc && m_own )
+ delete [] m_poc;
+ m_poc = NULL;
+ }
+
+ SQT* Set( const SQOT *ps ){
+ Release( );
+ Init( ps );
+ return m_poc;
+ }
+
+ operator SQT*() const { return m_poc; }
+
+ SQCharBufImpl<SQT,SQOT,use_latin1>& operator = (const SQT *ps){
+ Release();
+ Init( ps, false );
+ return *this;
+ }
+
+ SQCharBufImpl<SQT,SQOT,use_latin1>& operator = (const SQOT *ps){
+ Release();
+ Init( ps );
+ return *this;
+ }
+
+ // Move string from other here - Note: Empties the input argument (other)
+ SQCharBufImpl<SQT,SQOT,use_latin1>& operator = (const SQCharBufImpl<SQT,SQOT,use_latin1>& other){
+ Release();
+ m_poc = other.m_poc;
+ m_own = other.m_own;
+ SQT **psqt = (SQT**)&other.m_poc;
+ *psqt = NULL;
+ return *this;
+ }
+
+protected:
+ SQT *m_poc;
+ bool m_own;
+};
+
+typedef SQCharBufImpl<SQOtherChar, SQChar, bool(SQPLUS_USE_LATIN1)> SQOthCharBuf;
+typedef SQCharBufImpl<SQChar, SQOtherChar, bool(SQPLUS_USE_LATIN1)> SQDefCharBuf;
+typedef SQCharBufImpl<wchar_t, char, bool(SQPLUS_USE_LATIN1)> SQWCharBuf;
+typedef SQCharBufImpl<char, wchar_t, bool(SQPLUS_USE_LATIN1)> SQACharBuf;
+
+#ifdef SQUNICODE
+ // SQChar is wchar_t, convert to/from to either Latin1 or UTF8
+ #define WC2SQ(s) s
+ #define SQ2WC(s) s
+ SQDefCharBuf CH2SQ( const char* ps );
+ SQOthCharBuf SQ2CH( const wchar_t* pws );
+#else
+ // SQChar is char, convert to/from wchar_t
+ SQDefCharBuf WC2SQ( const wchar_t* pws );
+ SQOthCharBuf SQ2WC( const char* pws );
+ #define CH2SQ(s) s
+ #define SQ2CH(s) s
+#endif
+
+#endif // SQPLUS_CHARBUF_H
+
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