#include "libxml.h"
#include <string.h>
#include <libxml/xmlmemory.h>
#include <libxml/uri.h>
#include <libxml/globals.h>
#include <libxml/xmlerror.h>
#include "elfgcchack.h"

'defines'
#define	IN_LIBXML
#define	IS_ALPHA(x) (IS_LOWALPHA(x) \|\| IS_UPALPHA(x))
#define	IS_LOWALPHA(x) (((x) >= 'a') && ((x) <= 'z'))
#define	IS_UPALPHA(x) (((x) >= 'A') && ((x) <= 'Z'))
#define	IS_DIGIT(x) (((x) >= '0') && ((x) <= '9'))
#define	IS_ALPHANUM(x) (IS_ALPHA(x) \|\| IS_DIGIT(x))
#define	IS_MARK(x)
#define	IS_UNWISE(p)
#define	IS_RESERVED(x)
#define	IS_UNRESERVED(x) (IS_ALPHANUM(x) \|\| IS_MARK(x))
#define	NEXT(p) ((*p == '%')? p += 3 : p++)
#define	STRNDUP(s, n) (char ) xmlStrndup((const xmlChar )(s), (n))
#define	ISA_DIGIT(p) (((p) >= '0') && ((p) <= '9'))
#define	ISA_ALPHA(p)
#define	ISA_HEXDIG(p)
#define	ISA_SUB_DELIM(p)
#define	ISA_GEN_DELIM(p)
#define	ISA_RESERVED(p) (ISA_GEN_DELIM(p) \|\| (ISA_SUB_DELIM(p)))
#define	ISA_UNRESERVED(p)
#define	ISA_PCT_ENCODED(p) ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2)))
#define	ISA_PCHAR(p)
#define	NULLCHK(p)
#define	IS_WINDOWS_PATH(p)
#define	bottom_uri
Funciones
xmlURIPtr	xmlParseURI (const char *str)
int	xmlParseURIReference (xmlURIPtr uri, const char *str)
xmlURIPtr	xmlParseURIRaw (const char *str, int raw)
xmlURIPtr	xmlCreateURI (void)
xmlChar *	xmlSaveUri (xmlURIPtr uri)
void	xmlPrintURI (FILE *stream, xmlURIPtr uri)
void	xmlFreeURI (xmlURIPtr uri)
int	xmlNormalizeURIPath (char *path)
char *	xmlURIUnescapeString (const char str, int len, char target)
xmlChar *	xmlURIEscapeStr (const xmlChar str, const xmlChar list)
xmlChar *	xmlURIEscape (const xmlChar *str)
xmlChar *	xmlBuildURI (const xmlChar URI, const xmlChar base)
xmlChar *	xmlBuildRelativeURI (const xmlChar URI, const xmlChar base)
xmlChar *	xmlCanonicPath (const xmlChar *path)
xmlChar *	xmlPathToURI (const xmlChar *path)

Documentación de los 'defines'

#define bottom_uri

#define IN_LIBXML

uri.c: set of generic URI related routines

Reference: RFCs 3986, 2732 and 2373

See Copyright for the status of this software.

daniel@veillard.com

#define IS_ALPHA ( x ) (IS_LOWALPHA(x) || IS_UPALPHA(x))

#define IS_ALPHANUM ( x ) (IS_ALPHA(x) || IS_DIGIT(x))

#define IS_DIGIT ( x ) (((x) >= '0') && ((x) <= '9'))

#define IS_LOWALPHA ( x ) (((x) >= 'a') && ((x) <= 'z'))

#define IS_MARK ( x )

Valor:

(((x) == '-') || ((x) == '_') || ((x) == '.') ||     \
    ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') ||    \
    ((x) == '(') || ((x) == ')'))

#define IS_RESERVED ( x )

Valor:

(((x) == ';') || ((x) == '/') || ((x) == '?') || \
        ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \
        ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \
        ((x) == ']'))

#define IS_UNRESERVED ( x ) (IS_ALPHANUM(x) || IS_MARK(x))

#define IS_UNWISE ( p )

Valor:

(((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) ||         \
       ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) ||        \
       ((*(p) == ']')) || ((*(p) == '`')))

#define IS_UPALPHA ( x ) (((x) >= 'A') && ((x) <= 'Z'))

#define IS_WINDOWS_PATH ( p )

Valor:

((p != NULL) &&                                         \
         (((p[0] >= 'a') && (p[0] <= 'z')) ||                   \
          ((p[0] >= 'A') && (p[0] <= 'Z'))) &&                  \
         (p[1] == ':') && ((p[2] == '/') || (p[2] == '\\')))

xmlCanonicPath: : the resource locator in a filesystem notation

Constructs a canonic path from the specified path.

Returns a new canonic path, or a duplicate of the path parameter if the construction fails. The caller is responsible for freeing the memory occupied by the returned string. If there is insufficient memory available, or the argument is NULL, the function returns NULL.

#define ISA_ALPHA ( p )

Valor:

(((*(p) >= 'a') && (*(p) <= 'z')) ||            \
                      ((*(p) >= 'A') && (*(p) <= 'Z')))

#define ISA_DIGIT ( p ) ((*(p) >= '0') && (*(p) <= '9'))

#define ISA_GEN_DELIM ( p )

Valor:

(((*(p) == ':')) || ((*(p) == '/')) || ((*(p) == '?')) ||         \
       ((*(p) == '#')) || ((*(p) == '[')) || ((*(p) == ']')) ||         \
       ((*(p) == '@')))

#define ISA_HEXDIG ( p )

Valor:

(ISA_DIGIT(p) || ((*(p) >= 'a') && (*(p) <= 'f')) ||            \
        ((*(p) >= 'A') && (*(p) <= 'F')))

#define ISA_PCHAR ( p )

Valor:

(ISA_UNRESERVED(p) || ISA_PCT_ENCODED(p) || ISA_SUB_DELIM(p) || \
      ((*(p) == ':')) || ((*(p) == '@')))

#define ISA_PCT_ENCODED ( p ) ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2)))

#define ISA_RESERVED ( p ) (ISA_GEN_DELIM(p) || (ISA_SUB_DELIM(p)))

#define ISA_SUB_DELIM ( p )

Valor:

(((*(p) == '!')) || ((*(p) == '$')) || ((*(p) == '&')) ||               \
       ((*(p) == '(')) || ((*(p) == ')')) || ((*(p) == '*')) ||         \
       ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) ||         \
       ((*(p) == '=')))

#define ISA_UNRESERVED ( p )

Valor:

((ISA_ALPHA(p)) || (ISA_DIGIT(p)) || ((*(p) == '-')) ||         \
       ((*(p) == '.')) || ((*(p) == '_')) || ((*(p) == '~')))

#define NEXT ( p ) ((*p == '%')? p += 3 : p++)

#define NULLCHK ( p )

Valor:

if(!p) { \
                   xmlGenericError(xmlGenericErrorContext, \
                        "xmlURIEscape: out of memory\n"); \
                        xmlFreeURI(uri); \
                        return NULL; } \

#define STRNDUP	(	s,
		n
	)	(char ) xmlStrndup((const xmlChar )(s), (n))

Documentación de las funciones

xmlChar* xmlBuildRelativeURI	(	const xmlChar *	URI,
		const xmlChar *	base
	)

xmlBuildRelativeURI: : the URI reference under consideration : the base value

Expresses the URI of the reference in terms relative to the base. Some examples of this operation include: base = "http://site1.com/docs/book1.html" URI input URI returned docs/pic1.gif pic1.gif docs/img/pic1.gif img/pic1.gif img/pic1.gif ../img/pic1.gif http://site1.com/docs/pic1.gif pic1.gif http://site2.com/docs/pic1.gif http://site2.com/docs/pic1.gif

base = "docs/book1.html" URI input URI returned docs/pic1.gif pic1.gif docs/img/pic1.gif img/pic1.gif img/pic1.gif ../img/pic1.gif http://site1.com/docs/pic1.gif http://site1.com/docs/pic1.gif

Note: if the URI reference is really wierd or complicated, it may be worthwhile to first convert it into a "nice" one by calling xmlBuildURI (using 'base') before calling this routine, since this routine (for reasonable efficiency) assumes URI has already been through some validation.

Returns a new URI string (to be freed by the caller) or NULL in case error.

xmlChar* xmlBuildURI	(	const xmlChar *	URI,
		const xmlChar *	base
	)

xmlBuildURI: : the URI instance found in the document : the base value

Computes he final URI of the reference done by checking that the given URI is valid, and building the final URI using the base URI. This is processed according to section 5.2 of the RFC 2396

5.2. Resolving Relative References to Absolute Form

Returns a new URI string (to be freed by the caller) or NULL in case of error.

xmlChar* xmlCanonicPath ( const xmlChar * path )

xmlURIPtr xmlCreateURI ( void )

xmlCreateURI:

Simply creates an empty xmlURI

Returns the new structure or NULL in case of error

void xmlFreeURI ( xmlURIPtr uri )

xmlFreeURI: : pointer to an xmlURI

Free up the xmlURI struct

int xmlNormalizeURIPath ( char * path )

xmlNormalizeURIPath: : pointer to the path string

Applies the 5 normalization steps to a path string--that is, RFC 2396 Section 5.2, steps 6.c through 6.g.

Normalization occurs directly on the string, no new allocation is done

Returns 0 or an error code

xmlURIPtr xmlParseURI ( const char * str )

xmlParseURI: : the URI string to analyze

Parse an URI based on RFC 3986

URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]

Returns a newly built xmlURIPtr or NULL in case of error

xmlURIPtr xmlParseURIRaw	(	const char *	str,
		int	raw
	)

xmlParseURIRaw: : the URI string to analyze : if 1 unescaping of URI pieces are disabled

Parse an URI but allows to keep intact the original fragments.

URI-reference = URI / relative-ref

Returns a newly built xmlURIPtr or NULL in case of error

int xmlParseURIReference	(	xmlURIPtr	uri,
		const char *	str
	)

xmlParseURIReference: : pointer to an URI structure : the string to analyze

Parse an URI reference string based on RFC 3986 and fills in the appropriate fields of the structure

URI-reference = URI / relative-ref

Returns 0 or the error code

xmlChar* xmlPathToURI ( const xmlChar * path )

xmlPathToURI: : the resource locator in a filesystem notation

Constructs an URI expressing the existing path

Returns a new URI, or a duplicate of the path parameter if the construction fails. The caller is responsible for freeing the memory occupied by the returned string. If there is insufficient memory available, or the argument is NULL, the function returns NULL.

void xmlPrintURI	(	FILE *	stream,
		xmlURIPtr	uri
	)

xmlPrintURI: : a FILE* for the output : pointer to an xmlURI

Prints the URI in the stream .

xmlChar* xmlSaveUri ( xmlURIPtr uri )

xmlSaveUri: : pointer to an xmlURI

Save the URI as an escaped string

Returns a new string (to be deallocated by caller)

xmlChar* xmlURIEscape ( const xmlChar * str )

xmlURIEscape: : the string of the URI to escape

Escaping routine, does not do validity checks ! It will try to escape the chars needing this, but this is heuristic based it's impossible to be sure.

Returns an copy of the string, but escaped

25 May 2001 Uses xmlParseURI and xmlURIEscapeStr to try to escape correctly according to RFC2396.

Carl Douglas

xmlChar* xmlURIEscapeStr	(	const xmlChar *	str,
		const xmlChar *	list
	)

xmlURIEscapeStr: : string to escape : exception list string of chars not to escape

This routine escapes a string to hex, ignoring reserved characters (a-z) and the characters in the exception list.

Returns a new escaped string or NULL in case of error.

char* xmlURIUnescapeString	(	const char *	str,
		int	len,
		char *	target
	)

xmlURIUnescapeString: : the string to unescape : the length in bytes to unescape (or <= 0 to indicate full string) : optional destination buffer

Unescaping routine, but does not check that the string is an URI. The output is a direct unsigned char translation of XX values (no encoding) Note that the length of the result can only be smaller or same size as the input string.

Returns a copy of the string, but unescaped, will return NULL only in case of error

'defines'

Funciones

Documentación de los 'defines'

Documentación de las funciones