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# parserInternals

## Name

parserInternals —

## Synopsis

    #define     XML_MAX_NAMELEN
    typedef     CHARVAL;
    #define     NEXTCHARVAL                     (p)
    #define     SKIPCHARVAL                     (p)
    #define     IS_CHAR                         (c)
    #define     IS_BLANK                        (c)
    #define     IS_BASECHAR                     (c)
    #define     IS_DIGIT                        (c)
    #define     IS_COMBINING                    (c)
    #define     IS_EXTENDER                     (c)
    #define     IS_IDEOGRAPHIC                  (c)
    #define     IS_LETTER                       (c)
    #define     IS_PUBIDCHAR                    (c)
    #define     SKIP_EOL                        (p)
    #define     MOVETO_ENDTAG                   (p)
    #define     MOVETO_STARTTAG                 (p)
    xmlParserCtxtPtr xmlCreateDocParserCtxt     (xmlChar *cur);
    xmlParserCtxtPtr xmlCreateFileParserCtxt    (const char *filename);
    xmlParserCtxtPtr xmlCreateMemoryParserCtxt  (char *buffer,
                                                 int size);
    void        xmlFreeParserCtxt               (xmlParserCtxtPtr ctxt);
    xmlParserCtxtPtr xmlNewParserCtxt           (void);
    void        xmlSwitchEncoding               (xmlParserCtxtPtr ctxt,
                                                 xmlCharEncoding enc);
    void        xmlHandleEntity                 (xmlParserCtxtPtr ctxt,
                                                 xmlEntityPtr entity);
    xmlParserInputPtr xmlNewEntityInputStream   (xmlParserCtxtPtr ctxt,
                                                 xmlEntityPtr entity);
    void        xmlPushInput                    (xmlParserCtxtPtr ctxt,
                                                 xmlParserInputPtr input);
    xmlChar     xmlPopInput                     (xmlParserCtxtPtr ctxt);
    void        xmlFreeInputStream              (xmlParserInputPtr input);
    xmlParserInputPtr xmlNewInputFromFile       (xmlParserCtxtPtr ctxt,
                                                 const char *filename);
    xmlChar*    xmlSplitQName                   (const xmlChar *name,
                                                 xmlChar **prefix);
    xmlChar*    xmlNamespaceParseNCName         (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlNamespaceParseQName          (xmlParserCtxtPtr ctxt,
                                                 xmlChar **prefix);
    xmlChar*    xmlNamespaceParseNSDef          (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseQuotedString            (xmlParserCtxtPtr ctxt);
    void        xmlParseNamespace               (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlScanName                     (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseName                    (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseNmtoken                 (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseEntityValue             (xmlParserCtxtPtr ctxt,
                                                 xmlChar **orig);
    xmlChar*    xmlParseAttValue                (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseSystemLiteral           (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParsePubidLiteral            (xmlParserCtxtPtr ctxt);
    void        xmlParseCharData                (xmlParserCtxtPtr ctxt,
                                                 int cdata);
    xmlChar*    xmlParseExternalID              (xmlParserCtxtPtr ctxt,
                                                 xmlChar **publicID,
                                                 int strict);
    void        xmlParseComment                 (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParsePITarget                (xmlParserCtxtPtr ctxt);
    void        xmlParsePI                      (xmlParserCtxtPtr ctxt);
    void        xmlParseNotationDecl            (xmlParserCtxtPtr ctxt);
    void        xmlParseEntityDecl              (xmlParserCtxtPtr ctxt);
    int         xmlParseDefaultDecl             (xmlParserCtxtPtr ctxt,
                                                 xmlChar **value);
    xmlEnumerationPtr xmlParseNotationType      (xmlParserCtxtPtr ctxt);
    xmlEnumerationPtr xmlParseEnumerationType   (xmlParserCtxtPtr ctxt);
    int         xmlParseEnumeratedType          (xmlParserCtxtPtr ctxt,
                                                 xmlEnumerationPtr *tree);
    int         xmlParseAttributeType           (xmlParserCtxtPtr ctxt,
                                                 xmlEnumerationPtr *tree);
    void        xmlParseAttributeListDecl       (xmlParserCtxtPtr ctxt);
    xmlElementContentPtr xmlParseElementMixedContentDecl
                                                (xmlParserCtxtPtr ctxt);
    xmlElementContentPtr xmlParseElementChildrenContentDecl
                                                (xmlParserCtxtPtr ctxt);
    int         xmlParseElementContentDecl      (xmlParserCtxtPtr ctxt,
                                                 xmlChar *name,
                                                 xmlElementContentPtr *result);
    int         xmlParseElementDecl             (xmlParserCtxtPtr ctxt);
    void        xmlParseMarkupDecl              (xmlParserCtxtPtr ctxt);
    int         xmlParseCharRef                 (xmlParserCtxtPtr ctxt);
    xmlEntityPtr xmlParseEntityRef              (xmlParserCtxtPtr ctxt);
    void        xmlParseReference               (xmlParserCtxtPtr ctxt);
    void        xmlParsePEReference             (xmlParserCtxtPtr ctxt);
    void        xmlParseDocTypeDecl             (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseAttribute               (xmlParserCtxtPtr ctxt,
                                                 xmlChar **value);
    xmlChar*    xmlParseStartTag                (xmlParserCtxtPtr ctxt);
    void        xmlParseEndTag                  (xmlParserCtxtPtr ctxt,
                                                 xmlChar *tagname);
    void        xmlParseCDSect                  (xmlParserCtxtPtr ctxt);
    void        xmlParseContent                 (xmlParserCtxtPtr ctxt);
    void        xmlParseElement                 (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseVersionNum              (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseVersionInfo             (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseEncName                 (xmlParserCtxtPtr ctxt);
    xmlChar*    xmlParseEncodingDecl            (xmlParserCtxtPtr ctxt);
    int         xmlParseSDDecl                  (xmlParserCtxtPtr ctxt);
    void        xmlParseXMLDecl                 (xmlParserCtxtPtr ctxt);
    void        xmlParseMisc                    (xmlParserCtxtPtr ctxt);
    void        xmlParseExternalSubset          (xmlParserCtxtPtr ctxt,
                                                 const xmlChar *ExternalID,
                                                 const xmlChar *SystemID);
    #define     XML_SUBSTITUTE_NONE
    #define     XML_SUBSTITUTE_REF
    #define     XML_SUBSTITUTE_PEREF
    #define     XML_SUBSTITUTE_BOTH
    xmlChar*    xmlDecodeEntities               (xmlParserCtxtPtr ctxt,
                                                 int len,
                                                 int what,
                                                 xmlChar end,
                                                 xmlChar end2,
                                                 xmlChar end3);
    int         nodePush                        (xmlParserCtxtPtr ctxt,
                                                 xmlNodePtr value);
    xmlNodePtr  nodePop                         (xmlParserCtxtPtr ctxt);
    int         inputPush                       (xmlParserCtxtPtr ctxt,
                                                 xmlParserInputPtr value);
    xmlParserInputPtr inputPop                  (xmlParserCtxtPtr ctxt);

## Description

## Details

### XML_MAX_NAMELEN

    #define     XML_MAX_NAMELEN

### CHARVAL

### NEXTCHARVAL()

    #define     NEXTCHARVAL(p)

`p` : |

### SKIPCHARVAL()

    #define     SKIPCHARVAL(p)

`p` : |

### IS_CHAR()

    #define     IS_CHAR(c)

`c` : |

### IS_BLANK()

    #define     IS_BLANK(c)

`c` : |

### IS_BASECHAR()

    #define     IS_BASECHAR(c)

`c` : |

### IS_DIGIT()

    #define     IS_DIGIT(c)

`c` : |

### IS_COMBINING()

    #define     IS_COMBINING(c)

`c` : |

### IS_EXTENDER()

    #define     IS_EXTENDER(c)

`c` : |

### IS_IDEOGRAPHIC()

    #define     IS_IDEOGRAPHIC(c)

`c` : |

### IS_LETTER()

    #define     IS_LETTER(c)

`c` : |

### IS_PUBIDCHAR()

    #define     IS_PUBIDCHAR(c)

`c` : |

### SKIP_EOL()

    #define     SKIP_EOL(p)

`p` : |

### MOVETO_ENDTAG()

    #define     MOVETO_ENDTAG(p)

`p` : |

### MOVETO_STARTTAG()

    #define     MOVETO_STARTTAG(p)

`p` : |

### xmlCreateDocParserCtxt ()

    xmlParserCtxtPtr xmlCreateDocParserCtxt     (xmlChar *cur);

Create a parser context for an XML in-memory document.

`cur` : |
Returns : |

### xmlCreateFileParserCtxt ()

    xmlParserCtxtPtr xmlCreateFileParserCtxt    (const char *filename);

Create a parser context for a file content. Automatic support for ZLIB/Compress compressed document is provided by default if found at compile-time.

`filename` : |
Returns : |

### xmlCreateMemoryParserCtxt ()

    xmlParserCtxtPtr xmlCreateMemoryParserCtxt  (char *buffer,
                                                 int size);

Create a parser context for an XML in-memory document.

`buffer` : |
`size` : |
Returns : |

### xmlFreeParserCtxt ()

    void        xmlFreeParserCtxt               (xmlParserCtxtPtr ctxt);

Free all the memory used by a parser context. However the parsed document in ctxt->myDoc is not freed.

`ctxt` : |

### xmlNewParserCtxt ()

    xmlParserCtxtPtr xmlNewParserCtxt           (void);

Allocate and initialize a new parser context.

Returns : |

### xmlSwitchEncoding ()

    void        xmlSwitchEncoding               (xmlParserCtxtPtr ctxt,
                                                 xmlCharEncoding enc);

change the input functions when discovering the character encoding of a given entity.

`ctxt` : |
`enc` : |

### xmlHandleEntity ()

    void        xmlHandleEntity                 (xmlParserCtxtPtr ctxt,
                                                 xmlEntityPtr entity);

Default handling of defined entities, when should we define a new input stream ? When do we just handle that as a set of chars ?

OBSOLETE: to be removed at some point.

`ctxt` : |
`entity` : |

### xmlNewEntityInputStream ()

    xmlParserInputPtr xmlNewEntityInputStream   (xmlParserCtxtPtr ctxt,
                                                 xmlEntityPtr entity);

Create a new input stream based on an xmlEntityPtr

`ctxt` : |
`entity` : |
Returns : |

### xmlPushInput ()

    void        xmlPushInput                    (xmlParserCtxtPtr ctxt,
                                                 xmlParserInputPtr input);

xmlPushInput: switch to a new input stream which is stacked on top of the previous one(s).

`ctxt` : |
`input` : |

### xmlPopInput ()

    xmlChar     xmlPopInput                     (xmlParserCtxtPtr ctxt);

xmlPopInput: the current input pointed by ctxt->input came to an end pop it and return the next char.

`ctxt` : |
Returns : |

### xmlFreeInputStream ()

    void        xmlFreeInputStream              (xmlParserInputPtr input);

Free up an input stream.

`input` : |

### xmlNewInputFromFile ()

    xmlParserInputPtr xmlNewInputFromFile       (xmlParserCtxtPtr ctxt,
                                                 const char *filename);

Create a new input stream based on a file.

`ctxt` : |
`filename` : |
Returns : |

### xmlSplitQName ()

    xmlChar*    xmlSplitQName                   (const xmlChar *name,
                                                 xmlChar **prefix);

parse an XML qualified name string

[NS 5] QName ::= (Prefix ':')? LocalPart

[NS 6] Prefix ::= NCName

[NS 7] LocalPart ::= NCName

`name` : |
`prefix` : |
Returns : |

### xmlNamespaceParseNCName ()

    xmlChar*    xmlNamespaceParseNCName         (xmlParserCtxtPtr ctxt);

parse an XML namespace name.

[NS 3] NCName ::= (Letter | '_') (NCNameChar)*

[NS 4] NCNameChar ::= Letter | Digit | '.' | '-' | '_' | CombiningChar | Extender

`ctxt` : |
Returns : |

### xmlNamespaceParseQName ()

    xmlChar*    xmlNamespaceParseQName          (xmlParserCtxtPtr ctxt,
                                                 xmlChar **prefix);

parse an XML qualified name

[NS 5] QName ::= (Prefix ':')? LocalPart

[NS 6] Prefix ::= NCName

[NS 7] LocalPart ::= NCName

`ctxt` : |
`prefix` : |
Returns : |

### xmlNamespaceParseNSDef ()

    xmlChar*    xmlNamespaceParseNSDef          (xmlParserCtxtPtr ctxt);

parse a namespace prefix declaration

[NS 1] NSDef ::= PrefixDef Eq SystemLiteral

[NS 2] PrefixDef ::= 'xmlns' (':' NCName)?

`ctxt` : |
Returns : |

### xmlParseQuotedString ()

    xmlChar*    xmlParseQuotedString            (xmlParserCtxtPtr ctxt);

[OLD] Parse and return a string between quotes or doublequotes To be removed at next drop of binary compatibility

`ctxt` : |
Returns : |

### xmlParseNamespace ()

    void        xmlParseNamespace               (xmlParserCtxtPtr ctxt);

[OLD] xmlParseNamespace: parse specific PI '<?namespace ...' constructs.

This is what the older xml-name Working Draft specified, a bunch of other stuff may still rely on it, so support is still here as if it was declared on the root of the Tree:-(

To be removed at next drop of binary compatibility

`ctxt` : |

### xmlScanName ()

    xmlChar*    xmlScanName                     (xmlParserCtxtPtr ctxt);

Trickery: parse an XML name but without consuming the input flow Needed for rollback cases.

[4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | CombiningChar | Extender

[5] Name ::= (Letter | '_' | ':') (NameChar)*

[6] Names ::= Name (S Name)*

`ctxt` : |
Returns : |

### xmlParseName ()

    xmlChar*    xmlParseName                    (xmlParserCtxtPtr ctxt);

parse an XML name.

[4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | CombiningChar | Extender

[5] Name ::= (Letter | '_' | ':') (NameChar)*

[6] Names ::= Name (S Name)*

`ctxt` : |
Returns : |

### xmlParseNmtoken ()

    xmlChar*    xmlParseNmtoken                 (xmlParserCtxtPtr ctxt);

parse an XML Nmtoken.

[7] Nmtoken ::= (NameChar)+

[8] Nmtokens ::= Nmtoken (S Nmtoken)*

`ctxt` : |
Returns : |

### xmlParseEntityValue ()

    xmlChar*    xmlParseEntityValue             (xmlParserCtxtPtr ctxt,
                                                 xmlChar **orig);

parse a value for ENTITY decl.

[9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | "'" ([^%&'] | PEReference | Reference)* "'"

`ctxt` : |
`orig` : |
Returns : |

### xmlParseAttValue ()

    xmlChar*    xmlParseAttValue                (xmlParserCtxtPtr ctxt);

parse a value for an attribute Note: the parser won't do substitution of entities here, this will be handled later in xmlStringGetNodeList

[10] AttValue ::= '"' ([^<&"] | Reference)* '"' | "'" ([^<&'] | Reference)* "'"

3.3.3 Attribute-Value Normalization: Before the value of an attribute is passed to the application or checked for validity, the XML processor must normalize it as follows: - a character reference is processed by appending the referenced character to the attribute value - an entity reference is processed by recursively processing the replacement text of the entity - a whitespace character (x20, xD, xA, x9) is processed by appending x20 to the normalized value, except that only a single x20 is appended for a "xD xA" sequence that is part of an external parsed entity or the literal entity value of an internal parsed entity - other characters are processed by appending them to the normalized value If the declared value is not CDATA, then the XML processor must further process the normalized attribute value by discarding any leading and trailing space (x20) characters, and by replacing sequences of space (x20) characters by a single space (x20) character. All attributes for which no declaration has been read should be treated by a non-validating parser as if declared CDATA.

`ctxt` : |
Returns : |

### xmlParseSystemLiteral ()

    xmlChar*    xmlParseSystemLiteral           (xmlParserCtxtPtr ctxt);

parse an XML Literal

[11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")

`ctxt` : |
Returns : |

### xmlParsePubidLiteral ()

    xmlChar*    xmlParsePubidLiteral            (xmlParserCtxtPtr ctxt);

parse an XML public literal

[12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"

`ctxt` : |
Returns : |

### xmlParseCharData ()

    void        xmlParseCharData                (xmlParserCtxtPtr ctxt,
                                                 int cdata);

parse a CharData section. if we are within a CDATA section ']]>' marks an end of section.

[14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)

`ctxt` : |
`cdata` : |

### xmlParseExternalID ()

    xmlChar*    xmlParseExternalID              (xmlParserCtxtPtr ctxt,
                                                 xmlChar **publicID,
                                                 int strict);

Parse an External ID or a Public ID

NOTE: Productions [75] and [83] interract badly since [75] can generate 'PUBLIC' S PubidLiteral S SystemLiteral

[75] ExternalID ::= 'SYSTEM' S SystemLiteral | 'PUBLIC' S PubidLiteral S SystemLiteral

[83] PublicID ::= 'PUBLIC' S PubidLiteral

`ctxt` : |
`publicID` : |
`strict` : |
Returns : |

### xmlParseComment ()

    void        xmlParseComment                 (xmlParserCtxtPtr ctxt);

Skip an XML (SGML) comment <!-- .... --> The spec says that "For compatibility, the string "--" (double-hyphen) must not occur within comments. "

[15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'

`ctxt` : |

### xmlParsePITarget ()

    xmlChar*    xmlParsePITarget                (xmlParserCtxtPtr ctxt);

parse the name of a PI

[17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))

`ctxt` : |
Returns : |

### xmlParsePI ()

    void        xmlParsePI                      (xmlParserCtxtPtr ctxt);

parse an XML Processing Instruction.

[16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'

The processing is transfered to SAX once parsed.

`ctxt` : |

### xmlParseNotationDecl ()

    void        xmlParseNotationDecl            (xmlParserCtxtPtr ctxt);

parse a notation declaration

[82] NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'

Hence there is actually 3 choices: 'PUBLIC' S PubidLiteral 'PUBLIC' S PubidLiteral S SystemLiteral and 'SYSTEM' S SystemLiteral

See the NOTE on xmlParseExternalID().

`ctxt` : |

### xmlParseEntityDecl ()

    void        xmlParseEntityDecl              (xmlParserCtxtPtr ctxt);

parse <!ENTITY declarations

[70] EntityDecl ::= GEDecl | PEDecl

[71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'

[72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'

[73] EntityDef ::= EntityValue | (ExternalID NDataDecl?)

[74] PEDef ::= EntityValue | ExternalID

[76] NDataDecl ::= S 'NDATA' S Name

[ VC: Notation Declared ] The Name must match the declared name of a notation.

`ctxt` : |

### xmlParseDefaultDecl ()

    int         xmlParseDefaultDecl             (xmlParserCtxtPtr ctxt,
                                                 xmlChar **value);

Parse an attribute default declaration

[60] DefaultDecl ::= 'REQUIRED' | 'IMPLIED' | (('FIXED' S)? AttValue)

[ VC: Required Attribute ] if the default declaration is the keyword REQUIRED, then the attribute must be specified for all elements of the type in the attribute-list declaration.

[ VC: Attribute Default Legal ] The declared default value must meet the lexical constraints of the declared attribute type c.f. xmlValidateAttributeDecl()

[ VC: Fixed Attribute Default ] if an attribute has a default value declared with the FIXED keyword, instances of that attribute must match the default value.

[ WFC: No < in Attribute Values ] handled in xmlParseAttValue()

`ctxt` : |
`value` : |
Returns : |

### xmlParseNotationType ()

    xmlEnumerationPtr xmlParseNotationType      (xmlParserCtxtPtr ctxt);

parse an Notation attribute type.

Note: the leading 'NOTATION' S part has already being parsed...

[58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'

[ VC: Notation Attributes ] Values of this type must match one of the notation names included in the declaration; all notation names in the declaration must be declared.

`ctxt` : |
Returns : |

### xmlParseEnumerationType ()

    xmlEnumerationPtr xmlParseEnumerationType   (xmlParserCtxtPtr ctxt);

parse an Enumeration attribute type.

[59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'

[ VC: Enumeration ] Values of this type must match one of the Nmtoken tokens in the declaration

`ctxt` : |
Returns : |

### xmlParseEnumeratedType ()

    int         xmlParseEnumeratedType          (xmlParserCtxtPtr ctxt,
                                                 xmlEnumerationPtr *tree);

parse an Enumerated attribute type.

[57] EnumeratedType ::= NotationType | Enumeration

[58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'

`ctxt` : |
`tree` : |
Returns : |

### xmlParseAttributeType ()

    int         xmlParseAttributeType           (xmlParserCtxtPtr ctxt,
                                                 xmlEnumerationPtr *tree);

parse the Attribute list def for an element

[54] AttType ::= StringType | TokenizedType | EnumeratedType

[55] StringType ::= 'CDATA'

[56] TokenizedType ::= 'ID' | 'IDREF' | 'IDREFS' | 'ENTITY' | 'ENTITIES' | 'NMTOKEN' | 'NMTOKENS'

Validity constraints for attribute values syntax are checked in xmlValidateAttributeValue()

[ VC: ID ] Values of type ID must match the Name production. A name must not appear more than once in an XML document as a value of this type; i.e., ID values must uniquely identify the elements which bear them.

[ VC: One ID per Element Type ] No element type may have more than one ID attribute specified.

[ VC: ID Attribute Default ] An ID attribute must have a declared default of IMPLIED or REQUIRED.

[ VC: IDREF ] Values of type IDREF must match the Name production, and values of type IDREFS must match Names; TODO each IDREF Name must match the value of an ID attribute on some element in the XML document; i.e. IDREF values must match the value of some ID attribute.

[ VC: Entity Name ] Values of type ENTITY must match the Name production, values of type ENTITIES must match Names; TODO each Entity Name must match the name of an unparsed entity declared in the DTD.

[ VC: Name Token ] Values of type NMTOKEN must match the Nmtoken production; values of type NMTOKENS must match Nmtokens.

`ctxt` : |
`tree` : |
Returns : |

### xmlParseAttributeListDecl ()

    void        xmlParseAttributeListDecl       (xmlParserCtxtPtr ctxt);

: parse the Attribute list def for an element

[52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'

[53] AttDef ::= S Name S AttType S DefaultDecl

`ctxt` : |

### xmlParseElementMixedContentDecl ()

    xmlElementContentPtr xmlParseElementMixedContentDecl
                                                (xmlParserCtxtPtr ctxt);

parse the declaration for a Mixed Element content The leading '(' and spaces have been skipped in xmlParseElementContentDecl

[51] Mixed ::= '(' S? 'PCDATA' (S? '|' S? Name)* S? ')*' | '(' S? 'PCDATA' S? ')'

[ VC: Proper Group/PE Nesting ] applies to [51] too (see [49])

[ VC: No Duplicate Types ] The same name must not appear more than once in a single mixed-content declaration.

`ctxt` : |
Returns : |

### xmlParseElementChildrenContentDecl ()

    xmlElementContentPtr xmlParseElementChildrenContentDecl
                                                (xmlParserCtxtPtr ctxt);

parse the declaration for a Mixed Element content The leading '(' and spaces have been skipped in xmlParseElementContentDecl

[47] children ::= (choice | seq) ('?' | '*' | '+')?

[48] cp ::= (Name | choice | seq) ('?' | '*' | '+')?

[49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')'

[50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'

[ VC: Proper Group/PE Nesting ] applies to [49] and [50] TODO Parameter-entity replacement text must be properly nested with parenthetized groups. That is to say, if either of the opening or closing parentheses in a choice, seq, or Mixed construct is contained in the replacement text for a parameter entity, both must be contained in the same replacement text. For interoperability, if a parameter-entity reference appears in a choice, seq, or Mixed construct, its replacement text should not be empty, and neither the first nor last non-blank character of the replacement text should be a connector (| or ,).

`ctxt` : |
Returns : |

### xmlParseElementContentDecl ()

    int         xmlParseElementContentDecl      (xmlParserCtxtPtr ctxt,
                                                 xmlChar *name,
                                                 xmlElementContentPtr *result);

parse the declaration for an Element content either Mixed or Children, the cases EMPTY and ANY are handled directly in xmlParseElementDecl

[46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children

`ctxt` : |
`name` : |
`result` : |
Returns : |

### xmlParseElementDecl ()

    int         xmlParseElementDecl             (xmlParserCtxtPtr ctxt);

parse an Element declaration.

[45] elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'

[ VC: Unique Element Type Declaration ] No element type may be declared more than once

`ctxt` : |
Returns : |

### xmlParseMarkupDecl ()

    void        xmlParseMarkupDecl              (xmlParserCtxtPtr ctxt);

parse Markup declarations

[29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl | NotationDecl | PI | Comment

[ VC: Proper Declaration/PE Nesting ] TODO Parameter-entity replacement text must be properly nested with markup declarations. That is to say, if either the first character or the last character of a markup declaration (markupdecl above) is contained in the replacement text for a parameter-entity reference, both must be contained in the same replacement text.

[ WFC: PEs in Internal Subset ] In the internal DTD subset, parameter-entity references can occur only where markup declarations can occur, not within markup declarations. (This does not apply to references that occur in external parameter entities or to the external subset.)

`ctxt` : |

### xmlParseCharRef ()

    int         xmlParseCharRef                 (xmlParserCtxtPtr ctxt);

parse Reference declarations

[66] CharRef ::= '&#' [0-9]+ ';' | '&x' [0-9a-fA-F]+ ';'

[ WFC: Legal Character ] Characters referred to using character references must match the production for Char.

`ctxt` : |
Returns : |

### xmlParseEntityRef ()

    xmlEntityPtr xmlParseEntityRef              (xmlParserCtxtPtr ctxt);

parse ENTITY references declarations

[68] EntityRef ::= '&' Name ';'

[ WFC: Entity Declared ] In a document without any DTD, a document with only an internal DTD subset which contains no parameter entity references, or a document with "standalone='yes'", the Name given in the entity reference must match that in an entity declaration, except that well-formed documents need not declare any of the following entities: amp, lt, gt, apos, quot. The declaration of a parameter entity must precede any reference to it. Similarly, the declaration of a general entity must precede any reference to it which appears in a default value in an attribute-list declaration. Note that if entities are declared in the external subset or in external parameter entities, a non-validating processor is not obligated to read and process their declarations; for such documents, the rule that an entity must be declared is a well-formedness constraint only if standalone='yes'.

[ WFC: Parsed Entity ] An entity reference must not contain the name of an unparsed entity

`ctxt` : |
Returns : |

### xmlParseReference ()

    void        xmlParseReference               (xmlParserCtxtPtr ctxt);

parse and handle entity references in content, depending on the SAX interface, this may end-up in a call to character() if this is a CharRef, a predefined entity, if there is no reference() callback. or if the parser was asked to switch to that mode.

[67] Reference ::= EntityRef | CharRef

`ctxt` : |

### xmlParsePEReference ()

    void        xmlParsePEReference             (xmlParserCtxtPtr ctxt);

parse PEReference declarations The entity content is handled directly by pushing it's content as a new input stream.

[69] PEReference ::= '%' Name ';'

[ WFC: No Recursion ] TODO A parsed entity must not contain a recursive reference to itself, either directly or indirectly.

[ WFC: Entity Declared ] In a document without any DTD, a document with only an internal DTD subset which contains no parameter entity references, or a document with "standalone='yes'", ... ... The declaration of a parameter entity must precede any reference to it...

[ VC: Entity Declared ] In a document with an external subset or external parameter entities with "standalone='no'", ... ... The declaration of a parameter entity must precede any reference to it...

[ WFC: In DTD ] Parameter-entity references may only appear in the DTD. NOTE: misleading but this is handled.

`ctxt` : |

### xmlParseDocTypeDecl ()

    void        xmlParseDocTypeDecl             (xmlParserCtxtPtr ctxt);

parse a DOCTYPE declaration

[28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>'

[ VC: Root Element Type ] The Name in the document type declaration must match the element type of the root element.

`ctxt` : |

### xmlParseAttribute ()

    xmlChar*    xmlParseAttribute               (xmlParserCtxtPtr ctxt,
                                                 xmlChar **value);

parse an attribute

[41] Attribute ::= Name Eq AttValue

[ WFC: No External Entity References ] Attribute values cannot contain direct or indirect entity references to external entities.

[ WFC: No < in Attribute Values ] The replacement text of any entity referred to directly or indirectly in an attribute value (other than "&lt;") must not contain a <.

[ VC: Attribute Value Type ] The attribute must have been declared; the value must be of the type declared for it.

[25] Eq ::= S? '=' S?

With namespace:

[NS 11] Attribute ::= QName Eq AttValue

Also the case QName == xmlns:??? is handled independently as a namespace definition.

`ctxt` : |
`value` : |
Returns : |

### xmlParseStartTag ()

    xmlChar*    xmlParseStartTag                (xmlParserCtxtPtr ctxt);

parse a start of tag either for rule element or EmptyElement. In both case we don't parse the tag closing chars.

[40] STag ::= '<' Name (S Attribute)* S? '>'

[ WFC: Unique Att Spec ] No attribute name may appear more than once in the same start-tag or empty-element tag.

[44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'

[ WFC: Unique Att Spec ] No attribute name may appear more than once in the same start-tag or empty-element tag.

With namespace:

[NS 8] STag ::= '<' QName (S Attribute)* S? '>'

[NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'

Returne the element name parsed

`ctxt` : |
Returns : |

### xmlParseEndTag ()

    void        xmlParseEndTag                  (xmlParserCtxtPtr ctxt,
                                                 xmlChar *tagname);

parse an end of tag

[42] ETag ::= '</' Name S? '>'

With namespace

[NS 9] ETag ::= '</' QName S? '>'

`ctxt` : |
`tagname` : |

### xmlParseCDSect ()

    void        xmlParseCDSect                  (xmlParserCtxtPtr ctxt);

Parse escaped pure raw content.

[18] CDSect ::= CDStart CData CDEnd

[19] CDStart ::= '<![CDATA['

[20] Data ::= (Char* - (Char* ']]>' Char*))

[21] CDEnd ::= ']]>'

`ctxt` : |

### xmlParseContent ()

    void        xmlParseContent                 (xmlParserCtxtPtr ctxt);

Parse a content:

[43] content ::= (element | CharData | Reference | CDSect | PI | Comment)*

`ctxt` : |

### xmlParseElement ()

    void        xmlParseElement                 (xmlParserCtxtPtr ctxt);

parse an XML element, this is highly recursive

[39] element ::= EmptyElemTag | STag content ETag

[ WFC: Element Type Match ] The Name in an element's end-tag must match the element type in the start-tag.

[ VC: Element Valid ] An element is valid if there is a declaration matching elementdecl where the Name matches the element type and one of the following holds: - The declaration matches EMPTY and the element has no content. - The declaration matches children and the sequence of child elements belongs to the language generated by the regular expression in the content model, with optional white space (characters matching the nonterminal S) between each pair of child elements. - The declaration matches Mixed and the content consists of character data and child elements whose types match names in the content model. - The declaration matches ANY, and the types of any child elements have been declared.

`ctxt` : |

### xmlParseVersionNum ()

    xmlChar*    xmlParseVersionNum              (xmlParserCtxtPtr ctxt);

parse the XML version value.

[26] VersionNum ::= ([a-zA-Z0-9_.:] | '-')+

`ctxt` : |
Returns : |

### xmlParseVersionInfo ()

    xmlChar*    xmlParseVersionInfo             (xmlParserCtxtPtr ctxt);

parse the XML version.

[24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ")

[25] Eq ::= S? '=' S?

`ctxt` : |
Returns : |

### xmlParseEncName ()

    xmlChar*    xmlParseEncName                 (xmlParserCtxtPtr ctxt);

parse the XML encoding name

[81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*

`ctxt` : |
Returns : |

### xmlParseEncodingDecl ()

    xmlChar*    xmlParseEncodingDecl            (xmlParserCtxtPtr ctxt);

parse the XML encoding declaration

[80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'")

TODO: this should setup the conversion filters.

`ctxt` : |
Returns : |

### xmlParseSDDecl ()

    int         xmlParseSDDecl                  (xmlParserCtxtPtr ctxt);

parse the XML standalone declaration

[32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no')'"'))

[ VC: Standalone Document Declaration ] TODO The standalone document declaration must have the value "no" if any external markup declarations contain declarations of: - attributes with default values, if elements to which these attributes apply appear in the document without specifications of values for these attributes, or - entities (other than amp, lt, gt, apos, quot), if references to those entities appear in the document, or - attributes with values subject to normalization, where the attribute appears in the document with a value which will change as a result of normalization, or - element types with element content, if white space occurs directly within any instance of those types.

`ctxt` : |
Returns : |

### xmlParseXMLDecl ()

    void        xmlParseXMLDecl                 (xmlParserCtxtPtr ctxt);

parse an XML declaration header

[23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'

`ctxt` : |

### xmlParseMisc ()

    void        xmlParseMisc                    (xmlParserCtxtPtr ctxt);

parse an XML Misc* optionnal field.

[27] Misc ::= Comment | PI | S

`ctxt` : |

### xmlParseExternalSubset ()

    void        xmlParseExternalSubset          (xmlParserCtxtPtr ctxt,
                                                 const xmlChar *ExternalID,
                                                 const xmlChar *SystemID);

parse Markup declarations from an external subset

[30] extSubset ::= textDecl? extSubsetDecl

[31] extSubsetDecl ::= (markupdecl | conditionalSect | PEReference | S) *

`ctxt` : |
`ExternalID` : |
`SystemID` : |

### XML_SUBSTITUTE_NONE

    #define     XML_SUBSTITUTE_NONE

### XML_SUBSTITUTE_REF

    #define     XML_SUBSTITUTE_REF

### XML_SUBSTITUTE_PEREF

    #define     XML_SUBSTITUTE_PEREF

### XML_SUBSTITUTE_BOTH

    #define     XML_SUBSTITUTE_BOTH

### xmlDecodeEntities ()

    xmlChar*    xmlDecodeEntities               (xmlParserCtxtPtr ctxt,
                                                 int len,
                                                 int what,
                                                 xmlChar end,
                                                 xmlChar end2,
                                                 xmlChar end3);

[67] Reference ::= EntityRef | CharRef

[69] PEReference ::= '%' Name ';'

`ctxt` : |
`len` : |
`what` : |
`end` : |
`end2` : |
`end3` : |
Returns : |

### nodePush ()

    int         nodePush                        (xmlParserCtxtPtr ctxt,
                                                 xmlNodePtr value);

`ctxt` : |
`value` : |
Returns : |

### nodePop ()

    xmlNodePtr  nodePop                         (xmlParserCtxtPtr ctxt);

`ctxt` : |
Returns : |

### inputPush ()

    int         inputPush                       (xmlParserCtxtPtr ctxt,
                                                 xmlParserInputPtr value);

`ctxt` : |
`value` : |
Returns : |

### inputPop ()

    xmlParserInputPtr inputPop                  (xmlParserCtxtPtr ctxt);

`ctxt` : |
Returns : |

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