Using libxslt
on the iPhone OS is actually quite easy:
- Download the source-code of libxslt and extract it.
- Add the "libxslt" dir to Header search paths in your build settings. Also, add the path to the libxml-headers there (usually
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/include/libxml2
).
- Add libxml2.2.dylib and libxslt.dylib to the linked frameworks (Xcode "Groups & Files" panel: right click on "Frameworks" --> "Add" --> "Existing Frameworks...").
- Create a simple XML file and its XSL tranformation.
And finally you can use a code similar to the sample above to get the tranformation result into an NSString
(e.g. to display in in a UIWebView
):
#import <libxml/xmlmemory.h>
#import <libxml/debugXML.h>
#import <libxml/HTMLtree.h>
#import <libxml/xmlIO.h>
#import <libxml/xinclude.h>
#import <libxml/catalog.h>
#import <libxslt/xslt.h>
#import <libxslt/xsltInternals.h>
#import <libxslt/transform.h>
#import <libxslt/xsltutils.h>
...
NSString* filePath = [[NSBundle mainBundle] pathForResource: @"article" ofType: @"xml"];
NSString* styleSheetPath = [[NSBundle mainBundle] pathForResource: @"article_transform" ofType:@"xml"];
xmlDocPtr doc, res;
// tells the libxml2 parser to substitute entities as it parses your file
xmlSubstituteEntitiesDefault(1);
// This tells libxml to load external entity subsets
xmlLoadExtDtdDefaultValue = 1;
sty = xsltParseStylesheetFile((const xmlChar *)[styleSheetPath cStringUsingEncoding: NSUTF8StringEncoding]);
doc = xmlParseFile([filePath cStringUsingEncoding: NSUTF8StringEncoding]);
res = xsltApplyStylesheet(sty, doc, NULL);
char* xmlResultBuffer = nil;
int length = 0;
xsltSaveResultToString(&xmlResultBuffer, &length, res, sty);
NSString* result = [NSString stringWithCString: xmlResultBuffer encoding: NSUTF8StringEncoding];
NSLog(@"Result: %@", result);
free(xmlResultBuffer);
xsltFreeStylesheet(sty);
xmlFreeDoc(res);
xmlFreeDoc(doc);
xsltCleanupGlobals();
xmlCleanupParser();
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