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      1 <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>H.Code for Encoding Conversion Example</title><meta name="generator" content="DocBook XSL Stylesheets V1.61.2"><link rel="home" href="index.html" title="Libxml Tutorial"><link rel="up" href="index.html" title="Libxml Tutorial"><link rel="previous" href="apg.html" title="G.Code for Retrieving Attribute Value Example"><link rel="next" href="api.html" title="I.Acknowledgements"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">H.Code for Encoding Conversion Example</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="apg.html">Prev</a></td><th width="60%" align="center"></th><td width="20%" align="right"><a accesskey="n" href="api.html">Next</a></td></tr></table><hr></div><div class="appendix" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="convertappendix"></a>H.Code for Encoding Conversion Example</h2></div></div><div></div></div><p>
      2       </p><pre class="programlisting">
      3 #include &lt;string.h&gt;
      4 #include &lt;libxml/parser.h&gt;
      5 
      6 
      7 unsigned char*
      8 convert (unsigned char *in, char *encoding)
      9 {
     10 	unsigned char *out;
     11         int ret,size,out_size,temp;
     12         xmlCharEncodingHandlerPtr handler;
     13 
     14         size = (int)strlen(in)+1; 
     15         out_size = size*2-1; 
     16         out = malloc((size_t)out_size); 
     17 
     18         if (out) {
     19                 handler = xmlFindCharEncodingHandler(encoding);
     20                 
     21                 if (!handler) {
     22                         free(out);
     23                         out = NULL;
     24                 }
     25         }
     26         if (out) {
     27                 temp=size-1;
     28                 ret = handler-&gt;input(out, &amp;out_size, in, &amp;temp);
     29                 if (ret || temp-size+1) {
     30                         if (ret) {
     31                                 printf("conversion wasn't successful.\n");
     32                         } else {
     33                                 printf("conversion wasn't successful. converted: %i octets.\n",temp);
     34                         }
     35                         free(out);
     36                         out = NULL;
     37                 } else {
     38                         out = realloc(out,out_size+1); 
     39                         out[out_size]=0; /*null terminating out*/
     40                         
     41                 }
     42         } else {
     43                 printf("no mem\n");
     44         }
     45         return (out);
     46 }	
     47 
     48 
     49 int
     50 main(int argc, char **argv) {
     51 
     52 	unsigned char *content, *out;
     53 	xmlDocPtr doc;
     54 	xmlNodePtr rootnode;
     55 	char *encoding = "ISO-8859-1";
     56 	
     57 		
     58 	if (argc &lt;= 1) {
     59 		printf("Usage: %s content\n", argv[0]);
     60 		return(0);
     61 	}
     62 
     63 	content = argv[1];
     64 
     65 	out = convert(content, encoding);
     66 
     67 	doc = xmlNewDoc ("1.0");
     68 	rootnode = xmlNewDocNode(doc, NULL, (const xmlChar*)"root", out);
     69 	xmlDocSetRootElement(doc, rootnode);
     70 
     71 	xmlSaveFormatFileEnc("-", doc, encoding, 1);
     72 	return (1);
     73 }
     74 
     75 </pre><p>
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     77