string_8c-source.html

oci的源码,可以在任何平台上编译,相当方便实用

<a name="l00346"></a>00346         <span class="keywordflow">while</span> (++i &lt; char_count)
<a name="l00347"></a>00347             ustr[char_count] = (<span class="keywordtype">unsigned</span> int) wcstr[char_count];
<a name="l00348"></a>00348 
<a name="l00349"></a>00349     }
<a name="l00350"></a>00350 }
<a name="l00351"></a>00351 
<a name="l00352"></a>00352 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00353"></a>00353 <span class="comment"> * OCI_ConvertString</span>
<a name="l00354"></a>00354 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00355"></a>00355 
<a name="l00356"></a>00356 <span class="keywordtype">void</span> OCI_ConvertString(<span class="keywordtype">void</span> *str, <span class="keywordtype">int</span> char_count, <span class="keywordtype">int</span> size_char_in, 
<a name="l00357"></a>00357                        <span class="keywordtype">int</span> size_char_out)
<a name="l00358"></a>00358 {
<a name="l00359"></a>00359     OCI_MoveString(str, str, char_count, size_char_in, size_char_out);
<a name="l00360"></a>00360 }
<a name="l00361"></a>00361 
<a name="l00362"></a>00362 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00363"></a>00363 <span class="comment"> *  </span>
<a name="l00364"></a>00364 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00365"></a>00365 
<a name="l00366"></a>00366 <span class="keywordtype">void</span> OCI_CopyString(<span class="keywordtype">void</span> *src, <span class="keywordtype">void</span> *dest, <span class="keywordtype">int</span> *size, <span class="keywordtype">int</span> size_char_in,
<a name="l00367"></a>00367                     <span class="keywordtype">int</span> size_char_out)
<a name="l00368"></a>00368 {
<a name="l00369"></a>00369     <span class="keywordflow">if</span> ((src == NULL) || (dest == NULL) || (size == NULL))
<a name="l00370"></a>00370         <span class="keywordflow">return</span>;
<a name="l00371"></a>00371 
<a name="l00372"></a>00372     <span class="keywordflow">if</span> (size_char_out == size_char_in)
<a name="l00373"></a>00373     {
<a name="l00374"></a>00374         memcpy(dest, src, (<span class="keywordtype">size_t</span>) *size);
<a name="l00375"></a>00375         memset((<span class="keywordtype">void</span>*) (((<span class="keywordtype">char</span>*) dest) + (*size)), 0, size_char_out);
<a name="l00376"></a>00376     }
<a name="l00377"></a>00377     <span class="keywordflow">else</span>
<a name="l00378"></a>00378         OCI_GetOutputString(src, dest, size, size_char_in, size_char_out);
<a name="l00379"></a>00379 }
<a name="l00380"></a>00380 
<a name="l00381"></a>00381 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00382"></a>00382 <span class="comment"> * OCI_ReleaseMetaString</span>
<a name="l00383"></a>00383 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00384"></a>00384 
<a name="l00385"></a>00385 <span class="keywordtype">void</span> OCI_ReleaseMetaString(<span class="keywordtype">void</span> *str)
<a name="l00386"></a>00386 {
<a name="l00387"></a>00387     <span class="keywordflow">if</span> (str == NULL)
<a name="l00388"></a>00388         <span class="keywordflow">return</span>;
<a name="l00389"></a>00389 
<a name="l00390"></a>00390 <span class="preprocessor">#ifdef OCI_CHECK_METASTRINGS </span>
<a name="l00391"></a>00391 <span class="preprocessor"></span>
<a name="l00392"></a>00392     free(str);
<a name="l00393"></a>00393 
<a name="l00394"></a>00394 <span class="preprocessor">#endif</span>
<a name="l00395"></a>00395 <span class="preprocessor"></span>}
<a name="l00396"></a>00396 
<a name="l00397"></a>00397 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00398"></a>00398 <span class="comment"> * OCI_ReleaseDataString</span>
<a name="l00399"></a>00399 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00400"></a>00400 
<a name="l00401"></a>00401 <span class="keywordtype">void</span> OCI_ReleaseDataString(<span class="keywordtype">void</span> *str)
<a name="l00402"></a>00402 {
<a name="l00403"></a>00403     <span class="keywordflow">if</span> (str == NULL)
<a name="l00404"></a>00404         <span class="keywordflow">return</span>;
<a name="l00405"></a>00405 
<a name="l00406"></a>00406 <span class="preprocessor">#ifdef OCI_CHECK_DATASTRINGS </span>
<a name="l00407"></a>00407 <span class="preprocessor"></span>
<a name="l00408"></a>00408     free(str);
<a name="l00409"></a>00409 
<a name="l00410"></a>00410 <span class="preprocessor">#endif</span>
<a name="l00411"></a>00411 <span class="preprocessor"></span>}
<a name="l00412"></a>00412 
<a name="l00413"></a>00413 
<a name="l00414"></a>00414 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00415"></a>00415 <span class="comment"> * OCI_StringFromStringPtr</span>
<a name="l00416"></a>00416 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00417"></a>00417 
<a name="l00418"></a>00418 <span class="keywordtype">void</span> * OCI_StringFromStringPtr(OCIString *str, <span class="keywordtype">void</span> **buf, <span class="keywordtype">int</span> *buflen)
<a name="l00419"></a>00419 {
<a name="l00420"></a>00420     <span class="keywordtype">void</span> *tmp = NULL;
<a name="l00421"></a>00421     <span class="keywordtype">void</span> *ret = NULL;  
<a name="l00422"></a>00422   
<a name="l00423"></a>00423     <span class="keywordtype">int</span> olen  = 0;
<a name="l00424"></a>00424     <span class="keywordtype">int</span> osize = 0;
<a name="l00425"></a>00425     <span class="keywordtype">int</span> esize = 0;
<a name="l00426"></a>00426     <span class="keywordtype">int</span> msize = 0;
<a name="l00427"></a>00427 
<a name="l00428"></a>00428     OCI_CHECK(buf    == NULL, NULL);
<a name="l00429"></a>00429     OCI_CHECK(buflen == NULL, NULL);
<a name="l00430"></a>00430 
<a name="l00431"></a>00431     tmp = OCIStringPtr(OCILib.env, str);
<a name="l00432"></a>00432 
<a name="l00433"></a>00433     <span class="keywordflow">if</span> (tmp != NULL)
<a name="l00434"></a>00434     {
<a name="l00435"></a>00435 
<a name="l00436"></a>00436 <span class="preprocessor">#if defined(OCI_CHARSET_MIXED)</span>
<a name="l00437"></a>00437 <span class="preprocessor"></span>
<a name="l00438"></a>00438         <span class="comment">/* tmp is ANSI and must be converted to UTF16 */</span>
<a name="l00439"></a>00439 
<a name="l00440"></a>00440         esize  = 1;
<a name="l00441"></a>00441         msize  = (int) <span class="keyword">sizeof</span>(dtext);
<a name="l00442"></a>00442         olen   = (int) strlen((<span class="keywordtype">char</span>* ) tmp);
<a name="l00443"></a>00443         osize  = olen * esize;
<a name="l00444"></a>00444         
<a name="l00445"></a>00445 <span class="preprocessor">#elif defined(OCI_CHECK_DATASTRINGS)</span>
<a name="l00446"></a>00446 <span class="preprocessor"></span>
<a name="l00447"></a>00447         <span class="comment">/* tmp is UTF16 and might be converted to UTF32 on unixes */</span>
<a name="l00448"></a>00448 
<a name="l00449"></a>00449         
<a name="l00450"></a>00450         esize  = (int) <span class="keyword">sizeof</span>(odtext);
<a name="l00451"></a>00451         msize  = (int) <span class="keyword">sizeof</span>(dtext);
<a name="l00452"></a>00452         olen   = (int) OCI_StringLength(tmp, <span class="keyword">sizeof</span>(odtext));
<a name="l00453"></a>00453         osize  = olen * esize;
<a name="l00454"></a>00454 
<a name="l00455"></a>00455 <span class="preprocessor">#else</span>
<a name="l00456"></a>00456 <span class="preprocessor"></span>
<a name="l00457"></a>00457     OCI_NOT_USED(esize);
<a name="l00458"></a>00458 
<a name="l00459"></a>00459 <span class="preprocessor">#endif</span>
<a name="l00460"></a>00460 <span class="preprocessor"></span>
<a name="l00461"></a>00461         <span class="comment">/* do we need to use a buffer */</span>
<a name="l00462"></a>00462 
<a name="l00463"></a>00463         <span class="keywordflow">if</span> (olen &gt; 0)
<a name="l00464"></a>00464         {
<a name="l00465"></a>00465             <span class="comment">/* do we need to allocate/reallocate the buffer */</span>
<a name="l00466"></a>00466             
<a name="l00467"></a>00467             <span class="keywordflow">if</span> ((*buf) == NULL)
<a name="l00468"></a>00468             {           
<a name="l00469"></a>00469                 *buflen = (olen+1) * msize;
<a name="l00470"></a>00470                 *buf    = OCI_MemAlloc(OCI_IPC_STRING, msize, olen+1, FALSE);
<a name="l00471"></a>00471             }
<a name="l00472"></a>00472             <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((*buflen) &lt; ((olen+1) * msize))
<a name="l00473"></a>00473             {
<a name="l00474"></a>00474                 *buflen = (olen+1) * msize;
<a name="l00475"></a>00475                 *buf    = OCI_MemRealloc(*buf, OCI_IPC_STRING, msize, olen+1);
<a name="l00476"></a>00476             }
<a name="l00477"></a>00477         }
<a name="l00478"></a>00478 
<a name="l00479"></a>00479 <span class="preprocessor">#if defined(OCI_CHARSET_MIXED)</span>
<a name="l00480"></a>00480 <span class="preprocessor"></span>
<a name="l00481"></a>00481         mbstowcs(*buf, tmp, olen + OCI_CVT_CHAR);
<a name="l00482"></a>00482 
<a name="l00483"></a>00483         memset( (<span class="keywordtype">void</span>*) (((<span class="keywordtype">char</span>*) *buf) + (olen*msize)), 0, msize);
<a name="l00484"></a>00484         
<a name="l00485"></a>00485         ret = *buf;
<a name="l00486"></a>00486 
<a name="l00487"></a>00487 <span class="preprocessor">#elif defined(OCI_CHECK_DATASTRINGS)</span>
<a name="l00488"></a>00488 <span class="preprocessor"></span>  
<a name="l00489"></a>00489         OCI_GetOutputDataString(tmp, *buf, &amp;osize);
<a name="l00490"></a>00490         
<a name="l00491"></a>00491         memset( (<span class="keywordtype">void</span>*) (((<span class="keywordtype">char</span>*) *buf) + (osize)), 0, msize);
<a name="l00492"></a>00492                 
<a name="l00493"></a>00493         ret = *buf;
<a name="l00494"></a>00494 
<a name="l00495"></a>00495 <span class="preprocessor">#else</span>
<a name="l00496"></a>00496 <span class="preprocessor"></span>
<a name="l00497"></a>00497         osize = 0;
<a name="l00498"></a>00498         ret   = tmp;
<a name="l00499"></a>00499 
<a name="l00500"></a>00500 <span class="preprocessor">#endif</span>
<a name="l00501"></a>00501 <span class="preprocessor"></span>
<a name="l00502"></a>00502     }
<a name="l00503"></a>00503     <span class="keywordflow">else</span>
<a name="l00504"></a>00504     {
<a name="l00505"></a>00505         ret = tmp;
<a name="l00506"></a>00506     }
<a name="l00507"></a>00507 
<a name="l00508"></a>00508     <span class="keywordflow">return</span> ret;
<a name="l00509"></a>00509 }
<a name="l00510"></a>00510 
<a name="l00511"></a>00511 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00512"></a>00512 <span class="comment"> * OCI_StringFromStringPtr</span>
<a name="l00513"></a>00513 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00514"></a>00514 
<a name="l00515"></a>00515 <span class="keywordtype">boolean</span> OCI_StringToStringPtr(OCIString **str, OCIError *err, <span class="keywordtype">void</span> *value, 
<a name="l00516"></a>00516                               <span class="keywordtype">void</span> **buf, <span class="keywordtype">int</span> *buflen)
<a name="l00517"></a>00517 {
<a name="l00518"></a>00518     <span class="keywordtype">boolean</span> res = TRUE;
<a name="l00519"></a>00519     <span class="keywordtype">void</span> *ostr  = NULL;  
<a name="l00520"></a>00520     <span class="keywordtype">int</span> osize   = 0;
<a name="l00521"></a>00521 
<a name="l00522"></a>00522 <span class="preprocessor">#ifdef OCI_CHARSET_MIXED</span>
<a name="l00523"></a>00523 <span class="preprocessor"></span>
<a name="l00524"></a>00524     <span class="keywordtype">int</span> olen    = 0;
<a name="l00525"></a>00525     <span class="keywordtype">int</span> esize   = 0;