string_8c-source.html

ORACLE编程的好东西,纯C写的OCI封装.很好用,支持数据池.

<a name="l00330"></a>00330     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size_char_out &lt; size_char_in)
<a name="l00331"></a>00331     {
<a name="l00332"></a>00332         <span class="comment">/* pack string */</span>
<a name="l00333"></a>00333         
<a name="l00334"></a>00334         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>   *ustr  = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>   *) str;
<a name="l00335"></a>00335         <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> *wcstr = (<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> *) str;
<a name="l00336"></a>00336         <span class="keywordtype">int</span> i = 0;
<a name="l00337"></a>00337 
<a name="l00338"></a>00338         <span class="keywordflow">if</span> (*wcstr == 0)
<a name="l00339"></a>00339             <span class="keywordflow">return</span>;
<a name="l00340"></a>00340 
<a name="l00341"></a>00341         <span class="keywordflow">while</span> (++i &lt; char_count)
<a name="l00342"></a>00342             ustr[char_count] = (<span class="keywordtype">unsigned</span> int) wcstr[char_count];
<a name="l00343"></a>00343 
<a name="l00344"></a>00344     }
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346 
<a name="l00347"></a>00347 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00348"></a>00348 <span class="comment"> * OCI_CopyString</span>
<a name="l00349"></a>00349 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00350"></a>00350 
<a name="l00351"></a>00351 <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="l00352"></a>00352                     <span class="keywordtype">int</span> size_char_out)
<a name="l00353"></a>00353 {
<a name="l00354"></a>00354     <span class="keywordflow">if</span> ((src == NULL) || (dest == NULL) || (size == NULL))
<a name="l00355"></a>00355         <span class="keywordflow">return</span>;
<a name="l00356"></a>00356 
<a name="l00357"></a>00357     <span class="keywordflow">if</span> (size_char_out == size_char_in)
<a name="l00358"></a>00358     {
<a name="l00359"></a>00359         memcpy(dest, src, (<span class="keywordtype">size_t</span>) *size);
<a name="l00360"></a>00360         ((<span class="keywordtype">char</span>*) dest)[*size] = 0;
<a name="l00361"></a>00361     }
<a name="l00362"></a>00362     <span class="keywordflow">else</span>
<a name="l00363"></a>00363         OCI_GetOutputString(src, dest, size, size_char_in, size_char_out);
<a name="l00364"></a>00364 }
<a name="l00365"></a>00365 
<a name="l00366"></a>00366 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00367"></a>00367 <span class="comment"> * OCI_ReleaseMetaString</span>
<a name="l00368"></a>00368 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00369"></a>00369 
<a name="l00370"></a>00370 <span class="keywordtype">void</span> OCI_ReleaseMetaString(<span class="keywordtype">void</span> *str)
<a name="l00371"></a>00371 {
<a name="l00372"></a>00372     <span class="keywordflow">if</span> (str == NULL)
<a name="l00373"></a>00373         <span class="keywordflow">return</span>;
<a name="l00374"></a>00374 
<a name="l00375"></a>00375 <span class="preprocessor">#ifdef OCI_CHECK_METASTRINGS </span>
<a name="l00376"></a>00376 <span class="preprocessor"></span>
<a name="l00377"></a>00377     free(str);
<a name="l00378"></a>00378 
<a name="l00379"></a>00379 <span class="preprocessor">#endif</span>
<a name="l00380"></a>00380 <span class="preprocessor"></span>}
<a name="l00381"></a>00381 
<a name="l00382"></a>00382 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00383"></a>00383 <span class="comment"> * OCI_ReleaseDataString</span>
<a name="l00384"></a>00384 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00385"></a>00385 
<a name="l00386"></a>00386 <span class="keywordtype">void</span> OCI_ReleaseDataString(<span class="keywordtype">void</span> *str)
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388     <span class="keywordflow">if</span> (str == NULL)
<a name="l00389"></a>00389         <span class="keywordflow">return</span>;
<a name="l00390"></a>00390 
<a name="l00391"></a>00391 <span class="preprocessor">#ifdef OCI_CHECK_DATASTRINGS </span>
<a name="l00392"></a>00392 <span class="preprocessor"></span>
<a name="l00393"></a>00393     free(str);
<a name="l00394"></a>00394 
<a name="l00395"></a>00395 <span class="preprocessor">#endif</span>
<a name="l00396"></a>00396 <span class="preprocessor"></span>}
<a name="l00397"></a>00397 
<a name="l00398"></a>00398 <span class="comment">/* ************************************************************************ *</span>
<a name="l00399"></a>00399 <span class="comment"> *                            PUBLIC FUNCTIONS</span>
<a name="l00400"></a>00400 <span class="comment"> * ************************************************************************ */</span>
<a name="l00401"></a>00401 
<a name="l00402"></a>00402 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00403"></a>00403 <span class="comment"> * ocistrdup</span>
<a name="l00404"></a>00404 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00405"></a>00405 
<a name="l00406"></a>00406 <span class="keywordtype">char</span> * ocistrdup(<span class="keyword">const</span> <span class="keywordtype">char</span> * src)
<a name="l00407"></a>00407 {
<a name="l00408"></a>00408     <span class="keywordtype">char</span> *dst;
<a name="l00409"></a>00409 
<a name="l00410"></a>00410     OCI_CHECK(src == NULL, NULL)
<a name="l00411"></a>00411 
<a name="l00412"></a>00412     dst = (<span class="keywordtype">char</span> *) malloc((strlen(src) + 1) * sizeof(*dst));
<a name="l00413"></a>00413 
<a name="l00414"></a>00414     if (dst != NULL)
<a name="l00415"></a>00415         strcpy(dst, src);
<a name="l00416"></a>00416 
<a name="l00417"></a>00417     return dst;
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419 
<a name="l00420"></a>00420 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00421"></a>00421 <span class="comment"> * ocistrcasecmp</span>
<a name="l00422"></a>00422 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00423"></a>00423 
<a name="l00424"></a>00424 <span class="keywordtype">int</span> ocistrcasecmp(const <span class="keywordtype">char</span> *str1, const <span class="keywordtype">char</span> *str2)
<a name="l00425"></a>00425 {
<a name="l00426"></a>00426     <span class="keywordflow">if</span> (str1 == NULL &amp;&amp; str2 == NULL)
<a name="l00427"></a>00427         <span class="keywordflow">return</span> 0;
<a name="l00428"></a>00428 
<a name="l00429"></a>00429     <span class="keywordflow">if</span> (str1 == NULL)
<a name="l00430"></a>00430         <span class="keywordflow">return</span> 1;
<a name="l00431"></a>00431 
<a name="l00432"></a>00432     <span class="keywordflow">if</span> (str2 == NULL)
<a name="l00433"></a>00433         <span class="keywordflow">return</span> -1;
<a name="l00434"></a>00434 
<a name="l00435"></a>00435     <span class="keywordflow">while</span> (((*str1) != 0) &amp;&amp; 
<a name="l00436"></a>00436            ((*str2) != 0) &amp;&amp;
<a name="l00437"></a>00437            (tolower((<span class="keywordtype">int</span>)(*str1)) == tolower((<span class="keywordtype">int</span>)(*str2))))
<a name="l00438"></a>00438     {
<a name="l00439"></a>00439         str1++;
<a name="l00440"></a>00440         str2++;
<a name="l00441"></a>00441     }
<a name="l00442"></a>00442 
<a name="l00443"></a>00443     <span class="keywordflow">return</span> (tolower((<span class="keywordtype">int</span>) (*str1)) - tolower((<span class="keywordtype">int</span>) (*str2)));
<a name="l00444"></a>00444 }
<a name="l00445"></a>00445 
<a name="l00446"></a>00446 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00447"></a>00447 <span class="comment"> * ocisprintf</span>
<a name="l00448"></a>00448 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00449"></a>00449 
<a name="l00450"></a>00450 <span class="keywordtype">int</span> ocisprintf(<span class="keywordtype">char</span> *str, <span class="keywordtype">int</span> size, <span class="keyword">const</span> <span class="keywordtype">char</span> *format, ...)
<a name="l00451"></a>00451 {
<a name="l00452"></a>00452     va_list args;
<a name="l00453"></a>00453     <span class="keywordtype">int</span> n;
<a name="l00454"></a>00454 
<a name="l00455"></a>00455     va_start(args, format);
<a name="l00456"></a>00456 
<a name="l00457"></a>00457     n = vsnprintf(str, (<span class="keywordtype">size_t</span>) size, format, args);
<a name="l00458"></a>00458 
<a name="l00459"></a>00459     va_end(args);
<a name="l00460"></a>00460 
<a name="l00461"></a>00461     <span class="keywordflow">return</span> n;
<a name="l00462"></a>00462 }
<a name="l00463"></a>00463 
<a name="l00464"></a>00464 <span class="preprocessor">#ifdef OCI_INCLUDE_WCHAR</span>
<a name="l00465"></a>00465 <span class="preprocessor"></span>
<a name="l00466"></a>00466 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00467"></a>00467 <span class="comment"> * ociwcsdup</span>
<a name="l00468"></a>00468 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00469"></a>00469 
<a name="l00470"></a>00470 <span class="keywordtype">wchar_t</span> * ociwcsdup(<span class="keyword">const</span> <span class="keywordtype">wchar_t</span> * src)
<a name="l00471"></a>00471 {
<a name="l00472"></a>00472     <span class="keywordtype">wchar_t</span> *dst;
<a name="l00473"></a>00473 
<a name="l00474"></a>00474     OCI_CHECK(src == NULL, NULL)
<a name="l00475"></a>00475 
<a name="l00476"></a>00476     dst = (<span class="keywordtype">wchar_t</span> *) malloc((wcslen(src)+1) * sizeof(<span class="keywordtype">wchar_t</span>));
<a name="l00477"></a>00477 
<a name="l00478"></a>00478     if (dst != NULL)
<a name="l00479"></a>00479         wcscpy(dst, src);
<a name="l00480"></a>00480 
<a name="l00481"></a>00481     return dst;
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483 
<a name="l00484"></a>00484 <span class="comment">/* ------------------------------------------------------------------------ *</span>
<a name="l00485"></a>00485 <span class="comment"> * ociwcscasecmp</span>
<a name="l00486"></a>00486 <span class="comment"> * ------------------------------------------------------------------------ */</span>
<a name="l00487"></a>00487 
<a name="l00488"></a>00488 <span class="keywordtype">int</span> ociwcscasecmp(const <span class="keywordtype">wchar_t</span> *str1, const <span class="keywordtype">wchar_t</span> *str2)
<a name="l00489"></a>00489 {
<a name="l00490"></a>00490      <span class="keywordflow">if</span> (str1 == NULL &amp;&amp; str2 == NULL)
<a name="l00491"></a>00491         <span class="keywordflow">return</span> 0;
<a name="l00492"></a>00492 
<a name="l00493"></a>00493     <span class="keywordflow">if</span> (str1 == NULL)
<a name="l00494"></a>00494         <span class="keywordflow">return</span> 1;
<a name="l00495"></a>00495 
<a name="l00496"></a>00496     <span class="keywordflow">if</span> (str2 == NULL)
<a name="l00497"></a>00497         <span class="keywordflow">return</span> -1;
<a name="l00498"></a>00498 
<a name="l00499"></a>00499     <span class="keywordflow">while</span> ((*str1 != 0) &amp;&amp; (*str2 != 0) &amp;&amp;
<a name="l00500"></a>00500            (towlower((wint_t)*str1) == towlower((wint_t)*str2)))
<a name="l00501"></a>00501     {