10g (9.0.4)
Part Number B12099-01
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| Oracle® Application Developer's Guide - XML 10g (9.0.4) Part Number B12099-01 |
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This chapter contains the following sections:
XML Parser for C is provided with Oracle and Oracle Application Server. It is also available for download from the OTN site: http://otn.oracle.com/tech/xml
It is located in $ORACLE_HOME/xdk/c/parser.
readme.html in the root directory of the software archive contains release specific information including bug fixes and API additions.
XML Parser for C will check if an XML document is well-formed, and optionally validate it against a DTD. The parser constructs an object tree which can be accessed through a DOM interface or operate serially via a SAX interface.
You can post questions, comments, or bug reports to the XML Discussion Forum at http://otn.oracle.com/tech/xml.
See Appendix E, "XDK for C: Specifications and Cheat Sheets" for a brief list of XML Parser for C methods and specifications.
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See Also:
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The memory callback functions memcb may be used if you wish to use your own memory allocation. If they are used, all of the functions should be specified.
The memory allocated for parameters passed to the SAX callbacks or for nodes and data stored with the DOM parse tree will not be freed until one of the following is done:
xmlparse() or xmlparsebuf() is called to parse another file or buffer.
xmlclean() is called.
xmlterm() is called.
If threads are forked off somewhere in the midst of the init-parse-term sequence of calls, you will get unpredictable behavior and results.
Table 24-1 lists the datatypes used in XML Parser for C.
Error message files are provided in the mesg/ subdirectory. The messages files also exist in the $ORACLE_HOME/oracore/mesg directory. You may set the environment variable ORA_XML_MESG to point to the absolute path of the mesg/ subdirectory although this not required.
Available validation modes are described in Chapter 20, "Using XML Parser for Java", "Oracle XML Parsers Support Four Validation Modes" .
Figure 24-1 describes XML Parser for C calling sequence as follows:
XMLinit() function initializes the parsing process.
xmlparser() function. If the input is a string buffer, it is parsed using the xmlparserbuf() function.
DOM: If you are using the DOM interface, include the following steps:
xmlparse() or xmlparseBuffer() function calls .getDocumentElement(). If no other DOM functions are being applied, you can invoke xmlterm().
xmlterm()
xmlclean() to clean up any data structures created during the parse process. You would then call xmlterm()
SAX: If you are using the SAX interface, include the following steps:
xmlclean() to clean up the memory and structures used during a parse, and go to Step 5. or return to Step 2.
xmlterm()
The sequence of calls to the parser can be any of the following:
xmlinit() - xmlparse() or
xmlparsebuf() - xmlterm()
xmlinit() - xmlparse() or
xmlparsebuf() - xmlclean() - xmlparse() or
xmlparsebuf() - xmlclean() -... - xmlterm()
xmlinit() - xmlparse() or
xmlparsebuf() - xmlparse() or
xmlparsebuf() -... - xmlterm()
Figure 24-2 shows the XML Parser for C, XSLT functionality.
xmlparse():
The output of xmlparse(), the parsed stylesheet and parsed XML document, are sent to the xslprocess() function for processing.
xmlinit() initializes the XSLT processing. xmlinit() initializes the xslprocess() result
xslprocess()optionally calls other functions, such as print functions. You can see the list of available functions either on OTN or in the Oracle9i XML Reference.
xmlterm(), for the XML document, stylesheet, and final result.
XML Parser for C's XSLT functionality is illustrated with the following examples:
The following is the XML Parser for C default behavior:
Oracle XML parser for C checks if an XML document is well-formed, and optionally validates it against a DTD. The parser constructs an object tree which can be accessed via one of the following interfaces:
These two XML APIs:
Tree-based APIs are useful for a wide range of applications, but they often put a great strain on system resources, especially if the document is large (under very controlled circumstances, it is possible to construct the tree in a lazy fashion to avoid some of this problem). Furthermore, some applications need to build their own, different data trees, and it is very inefficient to build a tree of parse nodes, only to map it onto a new tree.
In both of these cases, an event-based API provides a simpler, lower-level access to an XML document: you can parse documents much larger than your available system memory, and you can construct your own data structures using your callback event handlers.
To use SAX, an xmlsaxcb structure is initialized with function pointers and passed to the xmlinit() call. A pointer to a user-defined context structure can also be included. That context pointer will be passed to each SAX function.
The SAX callback structure:
typedef struct { sword (*startDocument)(void *ctx); sword (*endDocument)(void *ctx); sword (*startElement)(void *ctx, const oratext *name, const struct xmlarray *attrs); sword (*endElement)(void *ctx, const oratext *name); sword (*characters)(void *ctx, const oratext *ch, size_t len); sword (*ignorableWhitespace)(void *ctx, const oratext *ch, size_t len); sword (*processingInstruction)(void *ctx, const oratext *target, const oratext *data); sword (*notationDecl)(void *ctx, const oratext *name, const oratext *publicId, const oratext *systemId); sword (*unparsedEntityDecl)(void *ctx, const oratext *name, const oratext *publicId, const oratext *systemId, const oratext *notationName); sword (*nsStartElement)(void *ctx, const oratext *qname, const oratext *local, const oratext *nsp, const struct xmlnodes *attrs); } xmlsaxcb;
See "XML Parser for C Example 7: C -- DOMSample.std" .
XML Parser for C can be invoked in two ways:
The XML Parser for C can be called as an executable by invoking bin/xml
Table 24-2 lists the command line options.
XML Parser for C can also be invoked by writing code to use the supplied APIs. The code must be compiled using the headers in the include/ subdirectory and linked against the libraries in the lib/ subdirectory. Please see the Makefile in the sample/ subdirectory for full details of how to build your program.
$ORACLE_HOME/xdk/c/parser/sample/ directory contains several XML applications to illustrate how to use the XML Parser for C with the DOM and SAX interfaces.
Table 24-3 lists the sample files in sample/ directory.
Change directories to ..sample/ and read the README file. This will explain how to build the sample programs according to your platform.
Table 24-4 lists the programs built by the sample files in sample/
class.xml is an XML file that inputs XSLSample.c.
<?xml version = "1.0"?> <!DOCTYPE course [ <!ELEMENT course (Name, Dept, Instructor, Student)> <!ELEMENT Name (#PCDATA)> <!ELEMENT Dept (#PCDATA)> <!ELEMENT Instructor (Name)> <!ELEMENT Student (Name*)> ]> <course> <Name>Calculus</Name> <Dept>Math</Dept> <Instructor> <Name>Jim Green</Name> </Instructor> <Student> <Name>Jack</Name> <Name>Mary</Name> <Name>Paul</Name> </Student> </course>
This XML example inputs DOMSample.c and SAXSample.c.
<?xml version="1.0"?> <!DOCTYPE PLAY [ <!ELEMENT PLAY (TITLE, PERSONAE, SCNDESCR, PLAYSUBT, INDUCT?, PROLOGUE?, ACT+, EPILOGUE?)> <!ELEMENT TITLE (#PCDATA)> <!ELEMENT FM (P+)> <!ELEMENT P (#PCDATA)> <!ELEMENT PERSONAE (TITLE, (PERSONA | PGROUP)+)> <!ELEMENT PGROUP (PERSONA+, GRPDESCR)> <!ELEMENT PERSONA (#PCDATA)> <!ELEMENT GRPDESCR (#PCDATA)> <!ELEMENT SCNDESCR (#PCDATA)> <!ELEMENT PLAYSUBT (#PCDATA)> <!ELEMENT INDUCT (TITLE, SUBTITLE*, (SCENE+|(SPEECH|STAGEDIR|SUBHEAD)+))> <!ELEMENT ACT (TITLE, SUBTITLE*, PROLOGUE?, SCENE+, EPILOGUE?)> <!ELEMENT SCENE (TITLE, SUBTITLE*, (SPEECH | STAGEDIR | SUBHEAD)+)> <!ELEMENT PROLOGUE (TITLE, SUBTITLE*, (STAGEDIR | SPEECH)+)> <!ELEMENT EPILOGUE (TITLE, SUBTITLE*, (STAGEDIR | SPEECH)+)> <!ELEMENT SPEECH (SPEAKER+, (LINE | STAGEDIR | SUBHEAD)+)> <!ELEMENT SPEAKER (#PCDATA)> <!ELEMENT LINE (#PCDATA | STAGEDIR)*> <!ELEMENT STAGEDIR (#PCDATA)> <!ELEMENT SUBTITLE (#PCDATA)> <!ELEMENT SUBHEAD (#PCDATA)> ]> <PLAY> <TITLE>The Tragedy of Antony and Cleopatra</TITLE> <PERSONAE> <TITLE>Dramatis Personae</TITLE> <PGROUP> <PERSONA>MARK ANTONY</PERSONA> <PERSONA>OCTAVIUS CAESAR</PERSONA> <PERSONA>M. AEMILIUS LEPIDUS</PERSONA> <GRPDESCR>triumvirs.</GRPDESCR> </PGROUP> <PERSONA>SEXTUS POMPEIUS</PERSONA> <PGROUP> <PERSONA>DOMITIUS ENOBARBUS</PERSONA> <PERSONA>VENTIDIUS</PERSONA> <PERSONA>EROS</PERSONA> <PERSONA>SCARUS</PERSONA> <PERSONA>DERCETAS</PERSONA> <PERSONA>DEMETRIUS</PERSONA> <PERSONA>PHILO</PERSONA> <GRPDESCR>friends to Antony.</GRPDESCR> </PGROUP> <PGROUP> <PERSONA>MECAENAS</PERSONA> <PERSONA>AGRIPPA</PERSONA> <PERSONA>DOLABELLA</PERSONA> <PERSONA>PROCULEIUS</PERSONA> <PERSONA>THYREUS</PERSONA> <PERSONA>GALLUS</PERSONA> <PERSONA>MENAS</PERSONA> <GRPDESCR>friends to Caesar.</GRPDESCR> </PGROUP> ... ... <SCNDESCR>SCENE In several parts of the Roman empire.</SCNDESCR> <PLAYSUBT>ANTONY AND CLEOPATRA</PLAYSUBT> <ACT><TITLE>ACT I</TITLE> <SCENE><TITLE>SCENE I. Alexandria. A room in CLEOPATRA's palace.</TITLE> <STAGEDIR>Enter DEMETRIUS and PHILO</STAGEDIR> <SPEECH> <SPEAKER>PHILO</SPEAKER> <LINE>Nay, but this dotage of our general's</LINE> <LINE>O'erflows the measure: those his goodly eyes,</LINE> <LINE>That o'er the files and musters of the war</LINE> <LINE>Have glow'd like plated Mars, now bend, now turn,</LINE> <LINE>The office and devotion of their view</LINE> <LINE>Upon a tawny front: his captain's heart,</LINE> <LINE>Which in the scuffles of great fights hath burst</LINE> <LINE>The buckles on his breast, reneges all temper,</LINE> <LINE>And is become the bellows and the fan</LINE> <LINE>To cool a gipsy's lust.</LINE> <STAGEDIR>Flourish. Enter ANTONY, CLEOPATRA, her Ladies, the Train, with Eunuchs fanning her</STAGEDIR> <LINE>Look, where they come:</LINE> <LINE>Take but good note, and you shall see in him.</LINE> <LINE>The triple pillar of the world transform'd</LINE> <LINE>Into a strumpet's fool: behold and see.</LINE> </SPEECH> <SPEECH> <SPEAKER>CLEOPATRA</SPEAKER> <LINE>If it be love indeed, tell me how much.</LINE> </SPEECH> <SPEECH> <SPEAKER>MARK ANTONY</SPEAKER> <LINE>There's beggary in the love that can be reckon'd.</LINE> </SPEECH> <SPEECH> <SPEAKER>CLEOPATRA</SPEAKER> <LINE>I'll set a bourn how far to be beloved.</LINE> </SPEECH> <SPEECH> <SPEAKER>MARK ANTONY</SPEAKER> <LINE>Then must thou needs find out new heaven, new earth.</LINE> </SPEECH> ... ... ... <SPEAKER>DOLABELLA</SPEAKER> <LINE>Here, on her breast,</LINE> <LINE>There is a vent of blood and something blown:</LINE> <LINE>The like is on her arm.</LINE> </SPEECH> <SPEECH> <SPEAKER>First Guard</SPEAKER> <LINE>This is an aspic's trail: and these fig-leaves</LINE> <LINE>Have slime upon them, such as the aspic leaves</LINE> <LINE>Upon the caves of Nile.</LINE> </SPEECH> <SPEECH> <SPEAKER>OCTAVIUS CAESAR</SPEAKER> <LINE>Most probable</LINE> <LINE>That so she died; for her physician tells me</LINE> <LINE>She hath pursued conclusions infinite</LINE> <LINE>Of easy ways to die. Take up her bed;</LINE> <LINE>And bear her women from the monument:</LINE> <LINE>She shall be buried by her Antony:</LINE> <LINE>No grave upon the earth shall clip in it</LINE> <LINE>A pair so famous. High events as these</LINE> <LINE>Strike those that make them; and their story is</LINE> <LINE>No less in pity than his glory which</LINE> <LINE>Brought them to be lamented. Our army shall</LINE> <LINE>In solemn show attend this funeral;</LINE> <LINE>And then to Rome. Come, Dolabella, see</LINE> <LINE>High order in this great solemnity.</LINE> </SPEECH> <STAGEDIR>Exeunt</STAGEDIR> </SCENE> </ACT> </PLAY>
This example stylesheet can be used to input XSLSample.c.
<?xml version="1.0"?> <!-- Identity transformation --> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="*|@*|comment()|processing-instruction()|text()"> <xsl:copy> <xsl:apply-templates select="*|@*|comment()|processing-instruction()|text()"/> </xsl:copy> </xsl:template> </xsl:stylesheet>
This DTD example inputs FullDOM.c.
<!DOCTYPE doc [ <!ELEMENT p (#PCDATA)> <!ATTLIST p xml:space (preserve|default) 'preserve'> <!NOTATION notation1 SYSTEM "file.txt"> <!NOTATION notation2 PUBLIC "some notation"> <!ELEMENT doc (p*)> <!ENTITY example "<p>An ampersand (&#38;) may be escaped numerically (&#38;#38;) or with a general entity (&amp;).</p>"> ]> <doc xml:lang="foo">&example;</doc>
The following example file, NSExample.xml, uses namespaces.
<!DOCTYPE doc [ <!ELEMENT doc (child*)> <!ATTLIST doc xmlns:nsprefix CDATA #IMPLIED> <!ATTLIST doc xmlns CDATA #IMPLIED> <!ATTLIST doc nsprefix:a1 CDATA #IMPLIED> <!ELEMENT child (#PCDATA)> ]> <doc nsprefix:a1 = "v1" xmlns="http://www.w3c.org" xmlns:nsprefix="http://www.oracle.com"> <child> This element inherits the default Namespace of doc. </child> </doc>
This example contains the C source code for DOMSample.c
/* Copyright (c) Oracle Corporation 1999. All Rights Reserved. */ /* NAME DOMSample.c - Sample DOM usage DESCRIPTION Sample usage of C XML parser via DOM interface */ #include <stdio.h> #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif #define DOCUMENT (oratext *) "cleo.xml" void dump(xmlctx *ctx, xmlnode *node); void dumppart(xmlctx *ctx, xmlnode *node, boolean indent); int main() { xmlctx *ctx; uword ecode; puts("XML C DOM sample"); puts("Initializing XML package..."); if (!(ctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, (const xmlsaxcb *) 0, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialze XML parser, error %u\n", (unsigned) ecode); return 1; } printf("Parsing '%s' ...\n", DOCUMENT); if (ecode = xmlparse(ctx, DOCUMENT, (oratext *) 0, XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE)) { printf("Parse failed, error %u\n", (unsigned) ecode); return 1; } puts("Outlining..."); dump(ctx, getDocumentElement(ctx)); xmlterm(ctx); return 0; } void dump(xmlctx *ctx, xmlnode *node) { const oratext *name; void *nodes; uword i, n_nodes; name = getNodeName(node); if (!strcmp((char *) name, "ACT")) dumppart(ctx, node, FALSE); else if (!strcmp((char *) name, "SCENE")) dumppart(ctx, node, TRUE); if (hasChildNodes(node)) { nodes = getChildNodes(node); n_nodes = numChildNodes(nodes); for (i = 0; i < n_nodes; i++) dump(ctx, getChildNode(nodes, i)); } } void dumppart(xmlctx *ctx, xmlnode *node, boolean indent) { void *title = getFirstChild(node); if (indent) fputs(" ", stdout); puts((char *) getNodeValue(getFirstChild(title))); } /* end of DOMSample.c */
The DOMSample.std example file shows the expected output from DOMSample.c
XML C DOM sample Initializing XML package... Parsing 'cleo.xml' ... Outlining... ACT I SCENE I. Alexandria. A room in CLEOPATRA's palace. SCENE II. The same. Another room. SCENE III. The same. Another room. SCENE IV. Rome. OCTAVIUS CAESAR's house. SCENE V. Alexandria. CLEOPATRA's palace. ACT II SCENE I. Messina. POMPEY's house. SCENE II. Rome. The house of LEPIDUS. ... ... ... ACT V SCENE I. Alexandria. OCTAVIUS CAESAR's camp. SCENE II. Alexandria. A room in the monument.
This example contains the C source code for SAXSample.c
/* Copyright (c) Oracle Corporation 1999. All Rights Reserved. */ /* NAME SAXSample.c - Sample SAX usage DESCRIPTION Sample usage of C XML parser via SAX interface */ #include <stdio.h> #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif #define DOCUMENT "cleo.xml" #define DEFAULT_KEYWORD "death" char *keyword; size_t keylen; oratext *elem; oratext speaker[80]; oratext *findsub(oratext *buf, size_t bufsiz, oratext *sub, size_t subsiz); void savestr(oratext *buf, oratext *s, size_t len); /* SAX callback functions */ sword startDocument(void *ctx); sword endDocument(void *ctx); sword startElement(void *ctx, const oratext *name, const struct xmlnodes *attrs); sword endElement(void *ctx, const oratext *name); sword characters(void *ctx, const oratext *ch, size_t len); xmlsaxcb saxcb = { startDocument, endDocument, startElement, endElement, characters }; int main(int argc, char **argv) { xmlctx *ctx; ub4 flags; uword ecode; flags = XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE; puts("XML C SAX sample"); keyword = (argc > 1) ? argv[1] : DEFAULT_KEYWORD; keylen = strlen(keyword); puts("Initializing XML package..."); if (!(ctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, &saxcb, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { (void) printf("Failed to initialize XML parser, error %u\n", (unsigned) ecode); return 1; } printf("Parsing '%s' and looking for lines containing '%s'...\n", DOCUMENT, keyword); elem = (oratext *) ""; if (ecode = xmlparse(ctx, (oratext *) DOCUMENT, (oratext *) 0, flags)) return 1; (void) xmlterm(ctx); /* terminate XML package */ return 0; } sword startDocument(void *ctx) { puts("startDocument"); return 0; } sword endDocument(void *ctx) { puts("endDocument"); return 0; } sword startElement(void *ctx, const oratext *name, const struct xmlnodes *attrs) { elem = (oratext *) name; return 0; } sword endElement(void *ctx, const oratext *name) { elem = (oratext *) ""; return 0; } sword characters(void *ctx, const oratext *ch, size_t len) { if (!strcmp((char *) elem, "SPEAKER")) savestr(speaker, (oratext *) ch, len); else if (findsub((oratext *) ch, len, (oratext *) keyword, keylen)) printf(" %s: %.*s\n", speaker, len, ch); return 0; } oratext *findsub(oratext *buf, size_t bufsiz, oratext *sub, size_t subsiz) { uword i; if (!buf || !bufsiz || (subsiz > bufsiz)) return (oratext *) 0; if (!sub || !subsiz) return buf; for (i = 0; i < bufsiz - subsiz; i++, buf++) { if (!memcmp(buf, sub, subsiz)) return buf; } return (oratext *) 0; } void savestr(oratext *buf, oratext *s, size_t len) { memcpy(buf, s, len); buf[len] = 0; } /* End of SAXSample.c */
SAXSample.std shows the expected output from SAXSample.c.
XML C SAX sample Initializing XML package... Parsing 'cleo.xml' and looking for lines containing 'death'... startDocument MARK ANTONY: Who tells me true, though in his tale lie death, DOMITIUS ENOBARBUS: if they suffer our departure, death's the word. DOMITIUS ENOBARBUS: mettle in death, which commits some loving act upon MARK ANTONY: The death of Fulvia, with more urgent touches, MARK ANTONY: Is Fulvia's death. CLEOPATRA: In Fulvia's death, how mine received shall be. EROS: the poor third is up, till death enlarge his confine. SCARUS: Where death is sure. Yon ribaudred nag of Egypt,-- EROS: Her head's declined, and death will seize her, but MARK ANTONY: I'll make death love me; for I will contend MARK ANTONY: Married to your good service, stay till death: MARK ANTONY: Than death and honour. Let's to supper, come, First Soldier: The hand of death hath raught him. CLEOPATRA: And bring me how he takes my death. MARK ANTONY: She hath betray'd me and shall die the death. MARK ANTONY: Than she which by her death our Caesar tells EROS: Of Antony's death. MARK ANTONY: A bridegroom in my death, and run into't DERCETAS: Thy death and fortunes bid thy followers fly. MARK ANTONY: Sufficing strokes for death. DIOMEDES: His death's upon him, but not dead. MARK ANTONY: I here importune death awhile, until CLEOPATRA: To rush into the secret house of death, CLEOPATRA: Ere death dare come to us? How do you, women? CLEOPATRA: And make death proud to take us. Come, away: OCTAVIUS CAESAR: And citizens to their dens: the death of Antony CLEOPATRA: What, of death too, CLEOPATRA: Where art thou, death? CLEOPATRA: The stroke of death is as a lover's pinch, CHARMIAN: Now boast thee, death, in thy possession lies OCTAVIUS CAESAR: Took her own way. The manner of their deaths? endDocument
This example contains the C source code for DOMNamespace.c.
/* Copyright (c) Oracle Corporation 1999. All Rights Reserved. */ /** ** This file demonstates a simple use of the parser and Namespace ** extensions to the DOM APIs. ** The XML file that is given to the application is parsed and the ** elements and attributes in the document are printed. **/ #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif #define DOCUMENT "NSExample.xml" /*------------------------------------------------------------------------ FUNCTION PROTOTYPES ------------------------------------------------------------------------*/ static void DOMNSprint(xmlctx *ctx); static void printElements(xmlctx *ctx, xmlnode *n); static void printAttrs(xmlctx *ctx, xmlnode *n); /*------------------------------------------------------------------------ MAIN ------------------------------------------------------------------------*/ int main() { xmlctx *ctx; oratext *encoding, *doc; void *saxcbctx; const xmlsaxcb *saxcb; uword ecode; ub4 flags; encoding = doc = (oratext *) 0; saxcbctx = (void *) 0; saxcb = (const xmlsaxcb *) 0; flags = XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE; doc = (oratext *)DOCUMENT; /* initialize LPX context */ if (!(ctx = xmlinit(&ecode, encoding, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, saxcb, saxcbctx, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialize XML parser, error %u\n", (unsigned) ecode); return -1; } /* parse the document */ printf("\nParsing '%s' ...\n", doc); ecode = xmlparse(ctx, doc, encoding, flags); if (ecode) printf("Parse failed, code %u\n", (unsigned) ecode); else printf("Parse succeeded.\n"); /* print results */ printf("Printing results ...\n"); DOMNSprint(ctx); /* terminate */ (void) xmlterm(ctx); return (ecode ? -1 : 0); } /*------------------------------------------------------------------------ DOMNSprint ------------------------------------------------------------------------*/ static void DOMNSprint(xmlctx *ctx) { xmlnode *root; root = getDocumentElement(ctx); printf("\nThe elements are:\n"); printElements(ctx, root); } /*------------------------------------------------------------------------ printElements ------------------------------------------------------------------------*/ static void printElements(xmlctx *ctx, xmlnode *n) { xmlnodes *nodes; uword i; size_t nn; const oratext *qname; const oratext *namespace; const oratext *local; const oratext *prefix; if (n == (xmlnode*)NULL) return; if (nodes = getChildNodes(n)) { for (nn = numChildNodes(nodes), i = 0; i < nn; i++) { /* get node qualified name, local name, namespace, and prefix */ qname = namespace = local = prefix = (oratext*)" "; if (getNodeQualifiedName(n) != (oratext*)NULL) qname = getNodeQualifiedName(n); if (getNodePrefix(n) != (oratext*)NULL) prefix = getNodePrefix(n); if (getNodeLocal(n) != (oratext *)NULL) local = getNodeLocal(n); if (getNodeNamespace(n) != (oratext*)NULL) namespace = getNodeNamespace(n); printf(" ELEMENT Qualified Name: %s\n", qname); printf(" ELEMENT Prefix Name : %s\n", prefix); printf(" ELEMENT Local Name : %s\n", local); printf(" ELEMENT Namespace : %s\n", namespace); printAttrs(ctx, n); printElements(ctx, (xmlnode *) getChildNode(nodes, i)); } } } /*------------------------------------------------------------------------ printAttrs ------------------------------------------------------------------------*/ static void printAttrs(xmlctx *ctx, xmlnode *n) { xmlnodes *attrs; xmlnode *a; uword i; size_t na; const oratext *value; const oratext *qname; const oratext *namespace; const oratext *local; const oratext *prefix; if (attrs = getAttributes(n)) { printf("\n ATTRIBUTES: \n"); for (na = numAttributes(attrs), i = 0; i < na; i++) { /* get attr qualified name, local name, namespace, and prefix */ a = getAttributeIndex(attrs, i); qname = namespace = local = prefix = value = (oratext*)" "; if (getAttrQualifiedName(a) != (oratext*)NULL) qname = getAttrQualifiedName(a); if (getAttrNamespace(a) != (oratext*)NULL) namespace = getAttrNamespace(a); if (getAttrLocal(a) != (oratext*)NULL) local = getAttrLocal(a); if (getAttrPrefix(a) != (oratext*)NULL) prefix = getAttrPrefix(a); if (getAttrValue(a) != (oratext*)NULL) value = getAttrValue(a); printf(" %s = %s\n", qname, value); printf(" Namespace : %s\n", namespace); printf(" Local Name: %s\n", local); printf(" Prefix : %s\n\n", prefix); } } printf("\n"); }
DOMNamespace.std shows the expected output from DOMNamespace.c.
Parsing 'NSExample.xml' ... Parse succeeded. Printing results ... The elements are: ELEMENT Qualified Name: doc ELEMENT Prefix Name : ELEMENT Local Name : doc ELEMENT Namespace : http://www.w3c.org ATTRIBUTES: nsprefix:a1 = v1 Namespace : http://www.oracle.com Local Name: a1 Prefix : nsprefix xmlns = http://www.w3c.org Namespace : Local Name: xmlns Prefix : xmlns:nsprefix = http://www.oracle.com Namespace : Local Name: nsprefix Prefix : xmlns ELEMENT Qualified Name: child ELEMENT Prefix Name : ELEMENT Local Name : child ELEMENT Namespace : http://www.w3c.org
This example contains the C source code for the SAXNamespace.c.
/* Copyright (c) Oracle Corporation 1999. All Rights Reserved. */ /** ** This file demonstrates a simple use of the Namespace extensions to ** the SAX APIs. **/ #include <stdio.h> #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif #define DOCUMENT "NSExample.xml" /*------------------------------------------------------------------------ FUNCTION PROTOTYPES ------------------------------------------------------------------------*/ static int sax_startdocument(void *ctx); static int sax_enddocument(void *ctx); static int sax_endelement(void *ctx, const oratext *name); static int sax_nsstartelement(void *ctx, const oratext *qname, const oratext *local, const oratext *namespace, const struct xmlnodes *attrs); /* SAX callback structure */ xmlsaxcb sax_callback = { sax_startdocument, sax_enddocument, 0, sax_endelement, 0, 0, 0, 0, 0, sax_nsstartelement, 0, 0, 0, 0, 0, 0, 0, 0 }; /* SAX callback context */ typedef struct { xmlctx *ctx; uword depth; } cbctx; /*------------------------------------------------------------------------ MAIN ------------------------------------------------------------------------*/ int main() { xmlctx *ctx; uword i; oratext *doc, *encoding; xmlsaxcb *saxcb; cbctx saxctx; void *saxcbctx; ub4 flags; uword ecode; doc = encoding = (oratext *)0; flags = XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE; doc = (oratext *)DOCUMENT; /* set up SAX callbacks */ saxcb = &sax_callback; saxcbctx = (void *) &saxctx; /* initialize LPX context */ if (!(ctx = xmlinit(&ecode, encoding, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, saxcb, saxcbctx, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialize XML parser, error %u\n", (unsigned) ecode); return -1; } /* parse the document */ printf("\nParsing '%s' ...\n", doc); ecode = xmlparse(ctx, doc, encoding, flags); if (ecode) printf("\nParse failed, code %u\n", (unsigned) ecode); else printf("\nParse succeeded.\n"); /* terminate */ (void) xmlterm(ctx); return (ecode ? -1 : 0); } /*------------------------------------------------------------------------ SAX Interface ------------------------------------------------------------------------*/ static int sax_startdocument(void *ctx) { printf("\nStartDocument\n\n"); return 0; } static int sax_enddocument(void *ctx) { printf("\nEndDocument\n"); return 0; } static int sax_endelement(void *ctx, const oratext *name) { printf("\nELEMENT Name : %s\n", name); return 0; } static int sax_nsstartelement(void *ctx, const oratext *qname, const oratext *local, const oratext *namespace, const struct xmlnodes *attrs) { cbctx *saxctx = (cbctx *) ctx; xmlnode *attr; size_t i; const oratext *aqname; const oratext *aprefix; const oratext *alocal; const oratext *anamespace; const oratext *avalue; /* * Use the functions getXXXQualifiedName(), getXXXLocalName(), and * getXXXNamespace() to get Namespace information. */ if (qname == (oratext*)NULL) qname = (oratext*)" "; if (local == (oratext*)NULL) local = (oratext*)" "; if (namespace == (oratext*)NULL) namespace = (oratext*)" "; printf("ELEMENT Qualified Name: %s\n", qname); printf("ELEMENT Local Name : %s\n", local); printf("ELEMENT Namespace : %s\n", namespace); if (attrs) { for (i = 0; i < numAttributes(attrs); i++) { attr = getAttributeIndex(attrs, i); aqname = aprefix = alocal = anamespace = avalue = (oratext*)" "; if (getAttrQualifiedName(attr) != (oratext*)NULL) aqname = getAttrQualifiedName(attr); if (getAttrPrefix(attr) != (oratext*)NULL) aprefix = getAttrPrefix(attr); if (getAttrLocal(attr) != (oratext*)NULL) alocal = getAttrLocal(attr); if (getAttrNamespace(attr) != (oratext*)NULL) anamespace = getAttrNamespace(attr); if (getAttrValue(attr) != (oratext*)NULL) avalue = getAttrValue(attr); printf(" ATTRIBUTE Qualified Name : %s\n", aqname); printf(" ATTRIBUTE Prefix : %s\n", aprefix); printf(" ATTRIBUTE Local Name : %s\n", alocal); printf(" ATTRIBUTE Namespace : %s\n", anamespace); printf(" ATTRIBUTE Value : %s\n", avalue); printf("\n"); } } return 0; }
SAXNamespace.std shows the expected output from SAXNamespace.c
Parsing 'NSExample.xml' ... StartDocument ELEMENT Qualified Name: doc ELEMENT Local Name : doc ELEMENT Namespace : http://www.w3c.org ATTRIBUTE Qualified Name : nsprefix:a1 ATTRIBUTE Prefix : nsprefix ATTRIBUTE Local Name : a1 ATTRIBUTE Namespace : http://www.oracle.com ATTRIBUTE Value : v1 ATTRIBUTE Qualified Name : xmlns ATTRIBUTE Prefix : ATTRIBUTE Local Name : xmlns ATTRIBUTE Namespace : ATTRIBUTE Value : http://www.w3c.org ATTRIBUTE Qualified Name : xmlns:nsprefix ATTRIBUTE Prefix : xmlns ATTRIBUTE Local Name : nsprefix ATTRIBUTE Namespace : ATTRIBUTE Value : http://www.oracle.com ELEMENT Qualified Name: child ELEMENT Local Name : child ELEMENT Namespace : http://www.w3c.org ELEMENT Name : child ELEMENT Name : doc EndDocument Parse succeeded.
This example contains the C source code for FullDOM.c
/* Copyright (c) Oracle Corporation 1999, 2000. All Rights Reserved. */ /* NAME FullDOM.c DESCRIPTION Sample code to test full DOM interface */ #include <stdio.h> #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif #define TEST_DOCUMENT (oratext *) "FullDOM.xml" void dump(xmlnode *node, uword level); void dumpnode(xmlnode *node, uword level); static char *ntypename[] = { "0", "ELEMENT", "ATTRIBUTE", "TEXT", "CDATA", "ENTREF", "ENTITY", "PI", "COMMENT", "DOCUMENT", "DTD", "DOCFRAG", "NOTATION" }; #define FAIL { puts("Failed!"); exit(1); } int main() { xmlctx *ctx; xmldtd *dtd; xmlnode *doc, *elem, *node, *text, *pi, *comment, *entref, *subelem, *subtext, *cdata, *attr1, *attr2, *clone, *deep_clone, *frag, *fragelem, *fragtext, *sub2, *fish, *food, *gleep1, *gleep2, *repl; xmlnodes *subs, *nodes, *attrs, *notes, *entities; uword i, ecode, level; puts("XML C Full DOM test"); puts("Initializing XML parser..."); if (!(ctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, (const xmlsaxcb *) 0, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialze XML parser, error %u\n", (unsigned) ecode); return 1; } puts("\nCreating new document..."); if (!(doc = createDocument(ctx))) FAIL puts("Document from root node:"); dump(getDocument(ctx), 0); puts("\nCreating 'ROOT' element..."); if (!(elem = createElement(ctx, (oratext *) "ROOT"))) FAIL puts("Setting as 'ROOT' element..."); if (!appendChild(ctx, doc, elem)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("Adding 7 children to 'ROOT' element..."); if (!(text = createTextNode(ctx, (oratext *) "Gibberish")) || !appendChild(ctx, elem, text)) FAIL if (!(comment = createComment(ctx, (oratext*) "Bit warm today, innit?")) || !appendChild(ctx, elem, comment)) FAIL if (!(pi = createProcessingInstruction(ctx, (oratext *) "target", (oratext *) "PI-contents")) || !appendChild(ctx, elem, pi)) FAIL if (!(cdata = createCDATASection(ctx, (oratext *) "See DATA")) || !appendChild(ctx, elem, cdata)) FAIL if (!(entref = createEntityReference(ctx, (oratext *) "EntRef")) || !appendChild(ctx, elem, entref)) FAIL if (!(fish = createElement(ctx, (oratext *) "FISH")) || !appendChild(ctx, elem, fish)) FAIL if (!(food = createElement(ctx, (oratext *) "FOOD")) || !appendChild(ctx, elem, food)) FAIL puts("Document from 'ROOT' element with its 7 children:"); dump(getDocumentElement(ctx), 0); puts("\nTesting node insertion..."); puts("Adding 'Pre-Gibberish' text node and 'Ask about the weather' comment node ..."); if (!(node = createTextNode(ctx, (oratext *) "Pre-Gibberish")) || !insertBefore(ctx, elem, node, text)) FAIL if (!(node = createComment(ctx, (oratext *) "Ask about the weather:")) || !insertBefore(ctx, elem, node, comment)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nTesting node removal by name ..."); puts("Removing 'FISH' element"); if (!(nodes = getChildNodes(elem)) || !removeNamedItem(nodes, (oratext *) "FISH")) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nTesting nextSibling links starting at first child..."); for (node = getFirstChild(elem); node; node = getNextSibling(node)) dump(node, 1); puts("\nTesting previousSibling links starting at last child..."); for (node = getLastChild(elem); node; node = getPreviousSibling(node)) dump(node, 1); puts("\nTesting setting node value..."); puts("Original node:"); dump(pi, 1); setNodeValue(pi, (oratext *) "New PI contents"); puts("Node after new value:"); dump(pi, 1); puts("\nAdding another element level, i.e., 'SUB' ..."); if (!(subelem = createElement(ctx, (oratext *) "SUB")) || !insertBefore(ctx, elem, subelem, cdata) || !(subtext = createTextNode(ctx, (oratext *) "Lengthy SubText")) || !appendChild(ctx, subelem, subtext)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nAdding a second 'SUB' element..."); if (!(sub2 = createElement(ctx, (oratext *) "SUB")) || !insertBefore(ctx, elem, sub2, cdata)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nGetting all SUB nodes - note the distinct hex addresses ..."); if (!(subs = getElementsByTagName(ctx, (xmlnode *) 0, (oratext *) "SUB"))) FAIL for (i = 0; i < getNodeMapLength(subs); i++) dumpnode(getChildNode(subs, i), 1); puts("\nTesting parent links..."); for (level = 1, node = subtext; node; node = getParentNode(node), level++) dumpnode(node, level); puts("\nTesting owner document of node..."); dumpnode(subtext, 1); dumpnode(getOwnerDocument(subtext), 1); puts("\nTesting node replacement..."); if (!(node = createTextNode(ctx, (oratext *) "REPLACEMENT, 1/2 PRICE")) || !replaceChild(ctx, pi, node)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nTesting node removal..."); if (!removeChild(entref)) FAIL puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nNormalizing..."); normalize(ctx, elem); puts("Document from 'ROOT' element:"); dump(getDocumentElement(ctx), 0); puts("\nCreating and populating document fragment..."); if (!(frag = createDocumentFragment(ctx)) || !(fragelem = createElement(ctx, (oratext *) "FragElem")) || !(fragtext = createTextNode(ctx, (oratext *) "FragText")) || !appendChild(ctx, frag, fragelem) || !appendChild(ctx, frag, fragtext)) FAIL dump(frag, 1); puts("Insert document fragment..."); if (!insertBefore(ctx, elem, frag, comment)) FAIL dump(elem, 1); puts("\nCreate two attributes..."); if (!(attr1 = createAttribute(ctx,(oratext*)"Attr1",(oratext*)"Value1")) || !(attr2 = createAttribute(ctx,(oratext*)"Attr2",(oratext*)"Value2"))) FAIL puts("Setting attributes..."); if (!setAttributeNode(ctx, subelem, attr1, NULL) || !setAttributeNode(ctx, subelem, attr2, NULL)) FAIL dump(subelem, 1); puts("\nAltering attribute1 value..."); setAttrValue(attr1, (oratext *) "New1"); dump(subelem, 1); puts("\nFetching attribute by name (Attr2)..."); if (!(node = getAttributeNode(subelem, (oratext *) "Attr2"))) FAIL dump(node, 1); puts("\nRemoving attribute by name (Attr1)..."); removeAttribute(subelem, (oratext *) "Attr1"); dump(subelem, 1); puts("\nAdding new attribute..."); if (!setAttribute(ctx, subelem, (oratext *) "Attr3", (oratext *) "Value3")) FAIL dump(subelem, 1); puts("\nRemoving attribute by pointer (Attr2)..."); if (!removeAttributeNode(subelem, attr2)) FAIL dump(subelem, 1); puts("\nAdding new attribute w/same name (test replacement)..."); dump(subelem, 1); if (!(node = createAttribute(ctx, (oratext*)"Attr3", (oratext*)"Zoo3"))) FAIL if (!setAttributeNode(ctx, subelem, node, NULL)) FAIL dump(subelem, 1); puts("\nTesting node (attr) set by name ..."); puts("Adding 'GLEEP' attribute and printing out hex addresses of node set"); attrs = getAttributes(subelem); if (!(gleep1=createAttribute(ctx,(oratext*)"GLEEP",(oratext*)"gleep1")) || !setNamedItem(ctx, attrs, gleep1, NULL)) FAIL dump(subelem, 1); puts("\nTesting node set by name ..."); puts("Replacing 'GLEEP' attribute - note the changed hex address"); if (!(gleep2=createAttribute(ctx,(oratext*)"GLEEP",(oratext*)"gleep2")) || !setNamedItem(ctx, attrs, gleep2, &repl)) FAIL dump(subelem, 1); puts("Replaced node was:"); dump(repl, 1); puts("\nOriginal SubROOT..."); dump(subelem, 1); puts("Cloned SubROOT (not deep)..."); clone = cloneNode(ctx, subelem, FALSE); dump(clone, 1); puts("Cloned SubROOT (deep)..."); deep_clone = cloneNode(ctx, subelem, TRUE); dump(deep_clone, 1); puts("\nSplitting text..."); dump(subelem, 1); splitText(ctx, subtext, 3); dump(subelem, 1); puts("\nTesting string operations..."); printf(" CharData = \"%s\"\n", getCharData(subtext)); puts("Setting new data..."); setCharData(subtext, (oratext *) "0123456789"); printf(" CharData = \"%s\"\n", getCharData(subtext)); printf(" CharLength = %d\n", getCharLength(subtext)); printf(" Substring(0,5) = \"%s\"\n", substringData(ctx, subtext, 0, 5)); printf(" Substring(8,2) = \"%s\"\n", substringData(ctx, subtext, 8, 2)); puts("Appending data..."); appendData(ctx, subtext, (oratext *) "ABCDEF"); printf(" CharData = \"%s\"\n", getCharData(subtext)); puts("Inserting data..."); insertData(ctx, subtext, 10, (oratext *) "*foo*"); printf(" CharData = \"%s\"\n", getCharData(subtext)); puts("Deleting data..."); deleteData(ctx, subtext, 0, 10); printf(" CharData = \"%s\"\n", getCharData(subtext)); puts("Replacing data..."); replaceData(ctx, subtext, 1, 3, (oratext *) "bamboozle"); printf(" CharData = \"%s\"\n", getCharData(subtext)); puts("Cleaning up..."); xmlclean(ctx); if (getDocument(ctx)) { puts("Problem, document is not gone!!"); return 1; } puts("Parsing test document..."); if (ecode = xmlparse(ctx, TEST_DOCUMENT, (oratext *) 0, 0)) { printf("Parse failed, code %d\n", (int) ecode); return 1; } puts("Document from root node:"); dump(getDocument(ctx), 0); dtd = getDocType(ctx); puts("Testing getDocTypeNotations..."); if (notes = getDocTypeNotations(dtd)) { size_t n_notes = numChildNodes(notes); printf("# of notations = %d\n", (int) n_notes); for (i = 0; i < n_notes; i++) dump(getChildNode(notes, i), 1); } else puts("No defined notations\n"); puts("Testing getDocTypeEntities..."); if (entities = getDocTypeEntities(dtd)) { size_t n_entities = numChildNodes(entities); printf("# of entities = %d\n", (int) n_entities); for (i = 0; i < n_entities; i++) dump(getChildNode(entities, i), 1); } else puts("No defined entities\n"); puts("Cleaning up..."); xmlclean(ctx); if (getDocument(ctx)) { puts("Problem, document is not gone!!\n"); return 1; } puts("\nTerminating parser..."); xmlterm(ctx); puts("Success."); return 0; } void dump(xmlnode *node, uword level) { xmlnodes *nodes; uword i, n_nodes; if (node) { dumpnode(node, level); if (hasChildNodes(node)) { nodes = getChildNodes(node); n_nodes = numChildNodes(nodes); for (i = 0; i < n_nodes; i++) dump(getChildNode(nodes, i), level + 1); } } void dumpnode(xmlnode *node, uword level) { const oratext *name, *value; xmlntype type; xmlnodes *attrs; xmlnode *attr; uword i, n_attrs; if (node) { for (i = 0; i <= level; i++) fputs(" ", stdout); type = getNodeType(node); fputs(ntypename[type], stdout); if ((name = getNodeName(node)) && (*name != '#')) printf(" \"%s\"", (char *) name); if (value = getNodeValue(node)) printf(" = \"%s\"", (char *) value); if ((type == ELEMENT_NODE) && (attrs = getAttributes(node))) { fputs(" [", stdout); n_attrs = numAttributes(attrs); for (i = 0; i < n_attrs; i++) { if (i) fputs(", ", stdout); attr = getAttributeIndex(attrs, i); fputs((char *) getAttrName(attr), stdout); if (getAttrSpecified(attr)) putchar('*'); printf("=\"%s\"", (char *) getAttrValue(attr)); } putchar(']'); } putchar('\n'); } } /* end of FullDOM.c */
FullDOM.std shows the expected output from FullDOM.c.
XML C Full DOM test Initializing XML parser... Creating new document... Document from root node: DOCUMENT Creating 'ROOT' element... Setting as 'ROOT' element... Document from 'ROOT' element: ELEMENT "ROOT" Adding 7 children to 'ROOT' element... Document from 'ROOT' element with its 7 children: ELEMENT "ROOT" TEXT = "Gibberish" COMMENT = "Bit warm today, innit?" PI "target" = "PI-contents" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FISH" ELEMENT "FOOD" Testing node insertion... Adding 'Pre-Gibberish' text node and 'Ask about the weather' comment node ... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" PI "target" = "PI-contents" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FISH" ELEMENT "FOOD" Testing node removal by name ... Removing 'FISH' element Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" PI "target" = "PI-contents" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FOOD" Testing nextSibling links starting at first child... TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" PI "target" = "PI-contents" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FOOD" Testing previousSibling links starting at last child... ELEMENT "FOOD" ENTREF "EntRef" CDATA = "See DATA" PI "target" = "PI-contents" COMMENT = "Bit warm today, innit?" COMMENT = "Ask about the weather:" TEXT = "Gibberish" TEXT = "Pre-Gibberish" Testing setting node value... Original node: PI "target" = "PI-contents" Node after new value: PI "target" = "New PI contents" Adding another element level, i.e., 'SUB' ... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" PI "target" = "New PI contents" ELEMENT "SUB" TEXT = "Lengthy SubText" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FOOD" Adding a second 'SUB' element... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" PI "target" = "New PI contents" ELEMENT "SUB" TEXT = "Lengthy SubText" ELEMENT "SUB" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FOOD" Getting all SUB nodes - note the distinct hex addresses ... ELEMENT "SUB" ELEMENT "SUB" Testing parent links... TEXT = "Lengthy SubText" ELEMENT "SUB" ELEMENT "ROOT" DOCUMENT Testing owner document of node... TEXT = "Lengthy SubText" DOCUMENT Testing node replacement... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" TEXT = "REPLACEMENT, 1/2 PRICE" ELEMENT "SUB" TEXT = "Lengthy SubText" ELEMENT "SUB" CDATA = "See DATA" ENTREF "EntRef" ELEMENT "FOOD" Testing node removal... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-Gibberish" TEXT = "Gibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" TEXT = "REPLACEMENT, 1/2 PRICE" ELEMENT "SUB" TEXT = "Lengthy SubText" ELEMENT "SUB" CDATA = "See DATA" ELEMENT "FOOD" Normalizing... Document from 'ROOT' element: ELEMENT "ROOT" TEXT = "Pre-GibberishGibberish" COMMENT = "Ask about the weather:" COMMENT = "Bit warm today, innit?" TEXT = "REPLACEMENT, 1/2 PRICE" ELEMENT "SUB" TEXT = "Lengthy SubText" ELEMENT "SUB" CDATA = "See DATA" ELEMENT "FOOD" Creating and populating document fragment... DOCFRAG ELEMENT "FragElem" TEXT = "FragText" Insert document fragment... ELEMENT "ROOT" TEXT = "Pre-GibberishGibberish" COMMENT = "Ask about the weather:" ELEMENT "FragElem" TEXT = "FragText" COMMENT = "Bit warm today, innit?" TEXT = "REPLACEMENT, 1/2 PRICE" ELEMENT "SUB" TEXT = "Lengthy SubText" ELEMENT "SUB" CDATA = "See DATA" ELEMENT "FOOD" Create two attributes... Setting attributes... ELEMENT "SUB" [Attr1*="Value1", Attr2*="Value2"] TEXT = "Lengthy SubText" Altering attribute1 value... ELEMENT "SUB" [Attr1*="New1", Attr2*="Value2"] TEXT = "Lengthy SubText" Fetching attribute by name (Attr2)... ATTRIBUTE "Attr2" = "Value2" Removing attribute by name (Attr1)... ELEMENT "SUB" [Attr2*="Value2"] TEXT = "Lengthy SubText" Adding new attribute... ELEMENT "SUB" [Attr2*="Value2", Attr3*="Value3"] TEXT = "Lengthy SubText" Removing attribute by pointer (Attr2)... ELEMENT "SUB" [Attr3*="Value3"] TEXT = "Lengthy SubText" Adding new attribute w/same name (test replacement)... ELEMENT "SUB" [Attr3*="Value3"] TEXT = "Lengthy SubText" ELEMENT "SUB" [Attr3*="Zoo3"] TEXT = "Lengthy SubText" Testing node (attr) set by name ... Adding 'GLEEP' attribute and printing out hex addresses of node set ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep1"] TEXT = "Lengthy SubText" Testing node set by name ... Replacing 'GLEEP' attribute - note the changed hex address ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Lengthy SubText" Replaced node was: ATTRIBUTE "GLEEP" = "gleep1" Original SubROOT... ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Lengthy SubText" Cloned SubROOT (not deep)... ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Lengthy SubText" Cloned SubROOT (deep)... ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Lengthy SubText" Splitting text... ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Lengthy SubText" ELEMENT "SUB" [Attr3*="Zoo3", GLEEP*="gleep2"] TEXT = "Leng" TEXT = "thy SubText" Testing string operations... CharData = "Leng" Setting new data... CharData = "0123456789" CharLength = 10 Substring(0,5) = "01234" Substring(8,2) = "89" Appending data... CharData = "0123456789ABCDEF" Inserting data... CharData = "0123456789*foo*ABCDEF" Deleting data... CharData = "*foo*ABCDEF" Replacing data... CharData = "*bamboozle*ABCDEF" Cleaning up... Parsing test document... Document from root node: DOCUMENT DTD "doc" ELEMENT "doc" [xml:lang*="foo"] ELEMENT "p" [xml:space="preserve"] TEXT = "An ampersand (&) may be escaped numerically (&) or with a general entity (&)." Testing getDocTypeNotations... # of notations = 2 NOTATION "notation1" NOTATION "notation2" Testing getDocTypeEntities... # of entities = 1 ENTITY "example" = "<p>An ampersand (&) may be escaped numerically (&#38;) or with a general entity (&amp;).</p>" Cleaning up... Terminating parser... Success.
This example contains C source code for XSLSample.c.
/* Copyright (c) Oracle Corporation 1999. All Rights Reserved. */ /* NAME XSLSample.c - Sample function for XSL DESCRIPTION Sample usage of C XSL Processor */ #include <stdio.h> #ifndef ORATYPES # include <oratypes.h> #endif #ifndef ORAXML_ORACLE # include <oraxml.h> #endif int main(int argc, char *argv[]) { xmlctx *xctx, *xslctx, *resctx; xmlnode *result; uword ecode; /* Check for correct usage */ if (argc < 3) { puts("Usage is XSLSample <xmlfile> <xslfile>\n"); return 1; } /* Parse the XML document */ if (!(xctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, (const xmlsaxcb *) 0, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialze XML parser, error %u\n", (unsigned) ecode); return 1; } printf("Parsing '%s' ...\n", argv[1]); if (ecode = xmlparse(xctx, (oratext *)argv[1], (oratext *) 0, XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE)) { printf("Parse failed, error %u\n", (unsigned) ecode); return 1; } /* Parse the XSL document */ if (!(xslctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, (const xmlsaxcb *) 0, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialze XML parser, error %u\n", (unsigned) ecode); return 1; } printf("Parsing '%s' ...\n", argv[2]); if (ecode = xmlparse(xslctx, (oratext *)argv[2], (oratext *) 0, XML_FLAG_VALIDATE | XML_FLAG_DISCARD_WHITESPACE)) { printf("Parse failed, error %u\n", (unsigned) ecode); return 1; } /* Initialize the result context */ if (!(resctx = xmlinit(&ecode, (const oratext *) 0, (void (*)(void *, const oratext *, uword)) 0, (void *) 0, (const xmlsaxcb *) 0, (void *) 0, (const xmlmemcb *) 0, (void *) 0, (const oratext *) 0))) { printf("Failed to initialze XML parser, error %u\n", (unsigned) ecode); return 1; } /* XSL processing */ printf("XSL Processing\n"); if (ecode = xslprocess(xctx, xslctx, resctx, &result)) { printf("Parse failed, error %u\n", (unsigned) ecode); return 1; } /* Print the result tree */ printres(resctx, result); /* Call the terminate functions */ (void)xmlterm(xctx); (void)xmlterm(xslctx); (void)xmlterm(resctx); return 0; }
XSLSample.std shows the expected output from XSLSample.c.
Parsing 'class.xml' ... Parsing 'iden.xsl' ... XSL Processing <root> <course> <Name>Calculus</Name> <Dept>Math</Dept> <Instructor> <Name>Jim Green</Name> </Instructor> <Student> <Name>Jack</Name> <Name>Mary</Name> <Name>Paul</Name> </Student> </course> </root>
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