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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=11"/> <meta name="generator" content="Doxygen 1.9.4"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>FreeTDS API: include/freetds/convert.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr id="projectrow"> <td id="projectalign"> <div id="projectname">FreeTDS API </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.9.4 --> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt MIT */ var searchBox = new SearchBox("searchBox", "search",'Search','.html'); /* @license-end */ </script> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt MIT */ $(function() { initMenu('',true,false,'search.php','Search'); $(document).ready(function() { init_search(); }); }); /* @license-end */ </script> <div id="main-nav"></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_f46f2c05841018b6ef8dbd3316ddb41a.html">freetds</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"><div class="title">convert.h</div></div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/* FreeTDS - Library of routines accessing Sybase and Microsoft databases</span></div> <div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Copyright (C) 1998-1999 Brian Bruns</span></div> <div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> *</span></div> <div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * This library is free software; you can redistribute it and/or</span></div> <div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * modify it under the terms of the GNU Library General Public</span></div> <div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * License as published by the Free Software Foundation; either</span></div> <div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * version 2 of the License, or (at your option) any later version.</span></div> <div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> *</span></div> <div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> * This library is distributed in the hope that it will be useful,</span></div> <div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div> <div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Library General Public License for more details.</span></div> <div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> *</span></div> <div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * You should have received a copy of the GNU Library General Public</span></div> <div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * License along with this library; if not, write to the</span></div> <div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330,</span></div> <div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * Boston, MA 02111-1307, USA.</span></div> <div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div> <div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div> <div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef _tdsconvert_h_</span></div> <div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define _tdsconvert_h_</span></div> <div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div> <div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <freetds/pushvis.h></span></div> <div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div> <div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#ifdef __cplusplus</span></div> <div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">extern</span> <span class="stringliteral">"C"</span></div> <div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span>{</div> <div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#if 0</span></div> <div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span>}</div> <div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#endif</span></div> <div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#endif</span></div> <div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div> <div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="a00934.html"> 33</a></span><span class="keyword">typedef</span> <span class="keyword">union </span><a class="code hl_union" href="a00934.html">conv_result</a></div> <div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>{</div> <div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="comment">/* fixed */</span></div> <div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> TDS_TINYINT ti;</div> <div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> TDS_SMALLINT si;</div> <div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> TDS_USMALLINT usi;</div> <div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> TDS_INT i;</div> <div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> TDS_UINT ui;</div> <div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> TDS_INT8 bi;</div> <div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> TDS_UINT8 ubi;</div> <div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> TDS_FLOAT f;</div> <div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> TDS_REAL r;</div> <div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <a class="code hl_union" href="a01026.html">TDS_MONEY</a> m;</div> <div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <a class="code hl_struct" href="a01030.html">TDS_MONEY4</a> m4;</div> <div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_struct" href="a01034.html">TDS_DATETIME</a> dt;</div> <div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_struct" href="a01038.html">TDS_DATETIME4</a> dt4;</div> <div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <a class="code hl_struct" href="a01094.html">TDS_DATETIMEALL</a> dta;</div> <div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> TDS_TIME time;</div> <div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> TDS_DATE date;</div> <div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> TDS_BIGTIME bigtime;</div> <div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> TDS_BIGDATETIME bigdatetime;</div> <div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <a class="code hl_struct" href="a01018.html">TDS_NUMERIC</a> n;</div> <div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <a class="code hl_struct" href="a01042.html">TDS_UNIQUE</a> u;</div> <div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div> <div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="comment">/* variable */</span></div> <div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> TDS_CHAR *c;</div> <div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> TDS_CHAR *ib;</div> <div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div> <div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/* sized buffer types */</span></div> <div class="line"><a id="l00062" name="l00062"></a><span class="lineno"><a class="line" href="a00938.html"> 62</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="a00938.html">cc_t</a> {</div> <div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> TDS_CHAR *c;</div> <div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> TDS_UINT len;</div> <div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> } cc;</div> <div class="line"><a id="l00066" name="l00066"></a><span class="lineno"><a class="line" href="a00942.html"> 66</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="a00942.html">cb_t</a> {</div> <div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> TDS_CHAR *ib;</div> <div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> TDS_UINT len;</div> <div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> } cb;</div> <div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span>}</div> <div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><a class="code hl_union" href="a00934.html">CONV_RESULT</a>;</div> <div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div> <div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">/*</span></div> <div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment"> * Failure return codes for tds_convert()</span></div> <div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="comment"> */</span></div> <div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="preprocessor">#define TDS_CONVERT_FAIL -1 </span><span class="comment">/* unspecified failure */</span><span class="preprocessor"></span></div> <div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="preprocessor">#define TDS_CONVERT_NOAVAIL -2 </span><span class="comment">/* conversion does not exist */</span><span class="preprocessor"></span></div> <div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="preprocessor">#define TDS_CONVERT_SYNTAX -3 </span><span class="comment">/* syntax error in source field */</span><span class="preprocessor"></span></div> <div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="preprocessor">#define TDS_CONVERT_NOMEM -4 </span><span class="comment">/* insufficient memory */</span><span class="preprocessor"></span></div> <div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="preprocessor">#define TDS_CONVERT_OVERFLOW -5 </span><span class="comment">/* result too large */</span><span class="preprocessor"></span></div> <div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div> <div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment">/* sized types */</span></div> <div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="preprocessor">#define TDS_CONVERT_CHAR 256</span></div> <div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="preprocessor">#define TDS_CONVERT_BINARY 257</span></div> <div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div> <div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code hl_function" href="a00539.html#ga80487b313213f60d8be71a50a002bb2c">tds_willconvert</a>(<span class="keywordtype">int</span> srctype, <span class="keywordtype">int</span> desttype);</div> <div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div> <div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>TDS_SERVER_TYPE <a class="code hl_function" href="a00539.html#ga68e3a76fd7b0a77614765826a8ab5be8">tds_get_null_type</a>(TDS_SERVER_TYPE srctype);</div> <div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>TDS_INT tds_char2hex(TDS_CHAR *dest, TDS_UINT destlen, <span class="keyword">const</span> TDS_CHAR * src, TDS_UINT srclen);</div> <div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span>TDS_INT <a class="code hl_function" href="a00539.html#gad83c146aa5ba3f1515557d6b5248494a">tds_convert</a>(<span class="keyword">const</span> <a class="code hl_struct" href="a01190.html">TDSCONTEXT</a> *context, <span class="keywordtype">int</span> srctype, <span class="keyword">const</span> <span class="keywordtype">void</span> *src, TDS_UINT srclen, <span class="keywordtype">int</span> desttype, <a class="code hl_union" href="a00934.html">CONV_RESULT</a> *cr);</div> <div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div> <div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keywordtype">size_t</span> <a class="code hl_function" href="a00539.html#ga8c9652e8b1f3e56a3289fd71b12cee1d">tds_strftime</a>(<span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> maxsize, <span class="keyword">const</span> <span class="keywordtype">char</span> *format, <span class="keyword">const</span> <a class="code hl_struct" href="a01098.html">TDSDATEREC</a> * timeptr, <span class="keywordtype">int</span> prec);</div> <div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div> <div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="preprocessor">#ifdef __cplusplus</span></div> <div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="preprocessor">#if 0</span></div> <div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span>{</div> <div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="preprocessor">#endif</span></div> <div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span>}</div> <div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="preprocessor">#endif</span></div> <div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div> <div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="preprocessor">#include <freetds/popvis.h></span></div> <div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div> <div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="preprocessor">#endif </span><span class="comment">/* _tdsconvert_h_ */</span><span class="preprocessor"></span></div> <div class="ttc" id="aa00539_html_ga68e3a76fd7b0a77614765826a8ab5be8"><div class="ttname"><a href="a00539.html#ga68e3a76fd7b0a77614765826a8ab5be8">tds_get_null_type</a></div><div class="ttdeci">TDS_SERVER_TYPE tds_get_null_type(TDS_SERVER_TYPE srctype)</div><div class="ttdoc">Get same type but nullable.</div><div class="ttdef"><b>Definition:</b> convert.c:2926</div></div> <div class="ttc" id="aa00539_html_ga80487b313213f60d8be71a50a002bb2c"><div class="ttname"><a href="a00539.html#ga80487b313213f60d8be71a50a002bb2c">tds_willconvert</a></div><div class="ttdeci">unsigned char tds_willconvert(int srctype, int desttype)</div><div class="ttdoc">Test if a conversion is possible.</div><div class="ttdef"><b>Definition:</b> convert.c:3106</div></div> <div class="ttc" id="aa00539_html_ga8c9652e8b1f3e56a3289fd71b12cee1d"><div class="ttname"><a href="a00539.html#ga8c9652e8b1f3e56a3289fd71b12cee1d">tds_strftime</a></div><div class="ttdeci">size_t tds_strftime(char *buf, size_t maxsize, const char *format, const TDSDATEREC *timeptr, int prec)</div><div class="ttdoc">format a date string according to an "extended" strftime(3) formatting definition.</div><div class="ttdef"><b>Definition:</b> convert.c:2992</div></div> <div class="ttc" id="aa00539_html_gad83c146aa5ba3f1515557d6b5248494a"><div class="ttname"><a href="a00539.html#gad83c146aa5ba3f1515557d6b5248494a">tds_convert</a></div><div class="ttdeci">TDS_INT tds_convert(const TDSCONTEXT *context, int srctype, const void *src, TDS_UINT srclen, int desttype, CONV_RESULT *cr)</div><div class="ttdoc">tds_convert convert a type to another.</div><div class="ttdef"><b>Definition:</b> convert.c:1891</div></div> <div class="ttc" id="aa00934_html"><div class="ttname"><a href="a00934.html">conv_result</a></div><div class="ttdef"><b>Definition:</b> convert.h:34</div></div> <div class="ttc" id="aa00938_html"><div class="ttname"><a href="a00938.html">conv_result::cc_t</a></div><div class="ttdef"><b>Definition:</b> convert.h:62</div></div> <div class="ttc" id="aa00942_html"><div class="ttname"><a href="a00942.html">conv_result::cb_t</a></div><div class="ttdef"><b>Definition:</b> convert.h:66</div></div> <div class="ttc" id="aa01018_html"><div class="ttname"><a href="a01018.html">tdsnumeric</a></div><div class="ttdef"><b>Definition:</b> proto.h:26</div></div> <div class="ttc" id="aa01026_html"><div class="ttname"><a href="a01026.html">tdsmoney</a></div><div class="ttdef"><b>Definition:</b> proto.h:39</div></div> <div class="ttc" id="aa01030_html"><div class="ttname"><a href="a01030.html">tdsmoney4</a></div><div class="ttdef"><b>Definition:</b> proto.h:45</div></div> <div class="ttc" id="aa01034_html"><div class="ttname"><a href="a01034.html">tdsdatetime</a></div><div class="ttdef"><b>Definition:</b> proto.h:50</div></div> <div class="ttc" id="aa01038_html"><div class="ttname"><a href="a01038.html">tdsdatetime4</a></div><div class="ttdef"><b>Definition:</b> proto.h:56</div></div> <div class="ttc" id="aa01042_html"><div class="ttname"><a href="a01042.html">tdsunique</a></div><div class="ttdef"><b>Definition:</b> proto.h:62</div></div> <div class="ttc" id="aa01094_html"><div class="ttname"><a href="a01094.html">TDS_DATETIMEALL</a></div><div class="ttdoc">this structure is not directed connected to a TDS protocol but keeps any DATE/TIME information.</div><div class="ttdef"><b>Definition:</b> tds.h:146</div></div> <div class="ttc" id="aa01098_html"><div class="ttname"><a href="a01098.html">tdsdaterec</a></div><div class="ttdoc">Used by tds_datecrack.</div><div class="ttdef"><b>Definition:</b> tds.h:159</div></div> <div class="ttc" id="aa01190_html"><div class="ttname"><a href="a01190.html">tds_context</a></div><div class="ttdef"><b>Definition:</b> tds.h:1029</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.4 </small></address> </body> </html>