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flightgear/utils/xmlgrep/xml.h
ehofman 6e6e8bbefc * reorganize the code to be able to skip comment sections
* depreciate __xmlFindNextElement and use __xmlGetNode instead
* xmlGetNextElement now returns char* instead of void* for furute use
* add preliminary support for wildcards in the search path ('*' and '?')
2008-07-06 11:34:50 +00:00

192 lines
6.2 KiB
C

/* Copyright (c) 2007, 2008 by Adalin B.V.
* Copyright (c) 2007, 2008 by Erik Hofman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of (any of) the copyrightholder(s) nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __XML_CONFIG
#define __XML_CONFIG 1
/**
* Open an XML file for processing
*
* @param fname path to the file
* @return XML-id which is used for further processing
*/
void *xmlOpen(const char *);
/**
* Close the XML file after which no further processing is possible
*
* @param xid XML-id
*/
void xmlClose(const void *);
/**
* Locate a subsection of the xml tree for further processing.
* This adds processing speed since the reuired nodes will only be searched
* in the subsection.
*
* The memory allocated for the XML-subsection-id has to be freed by the
* calling program.
*
* @param xid XML-id
* @param node path to the node containing the subsection
* @return XML-subsection-id for further processing
*/
void *xmlGetNode(const void *, const char *);
/**
* Copy a subsection of the xml tree for further processing.
* This is useful when it's required to process a section of the XML code
* after the file has been closed. The drawback is the added memory
* requirements.
*
* The memory allocated for the XML-subsection-id has to be freed by the
* calling program.
*
* @param xid XML-id
* @param node path to the node containing the subsection
* @return XML-subsection-id for further processing
*/
void *xmlCopyNode(void *, const char *);
/**
* Get the number of elements with the same name from a specified xml path
*
* @param xid XML-id
* @param path path to the xml node
* @return the number count of the nodename
*/
unsigned int xmlGetNumElements(void *, const char *);
/**
* Get the next occurrence of element in the parent node
* The return value should neevr be altered or freed by the caller
*
* @param pid XML-id of the parent node of this node
* @param xid XML-id
* @param element name of the element to search for
* @return name of the element or NULL if unsuccessful
*/
const char *xmlGetNextElement(const void *, void *, const char *);
/**
* Compare the value of this element to a reference string.
* Comparing is done in a case insensitive way.
*
* @param xid XML-id
* @param s the string to compare to.
* @return an integer less than, equal to, ro greater than zero if the value
* of the node is found, respectively, to be less than, to match, or be greater
* than s
*/
int xmlCompareString(const void *, const char *);
/**
* Get a string of characters from a specified xml path
* This function has the advantage of not allocating its own return buffer,
* keeping the memory management to an absolute minimum but the disadvantage
* is that it's unreliable in multithread environments.
*
* @param xid XML-id
* @param path path to the xml node
* @param buffer the buffer to copy the string to
* @param buflen length of the destination buffer
* @return the length of the string
*/
unsigned int xmlCopyNodeString(void *, const char *, char *, const unsigned int);
/**
* Get a string of characters from the current node
* The returned string has to be freed by the calling program.
*
* @param xid XML-id
* @return a newly alocated string containing the contents of the node.
*/
char *xmlGetString(void *);
/**
* Get a string of characters from a specified xml path
* The returned string has to be freed by the calling program.
*
* @param xid XML-id
* @param path path to the xml node
* @return a newly alocated string containing the contents of the node.
*/
char *xmlGetNodeString(void *, const char *);
/**
* Compare the value of a node to a reference string.
* Comparing is done in a case insensitive way.
*
* @param xid XML-id
* @param path path to the xml node to compare to
* @param s the string to compare to.
* @return an integer less than, equal to, ro greater than zero if the value
* of the node is found, respectively, to be less than, to match, or be greater
* than s
*/
int xmlCompareNodeString(const void *, const char *, const char *);
/**
* Get the integer value from the current node
*
* @param xid XML-id
* @return the contents of the node converted to an integer value.
*/
long int xmlGetInt(void *);
/**
* Get an integer value from a specified xml path
*
* @param xid XML-id
* @param path path to the xml node
* @return the contents of the node converted to an integer value.
*/
long int xmlGetNodeInt(void *, const char *);
/**
* Get the double value from the curent node
*
* @param xid XML-id
* @return the contents of the node converted to a double value.
*/
double xmlGetDouble(void *);
/**
* Get a double value from a specified xml path
*
* @param xid XML-id
* @param path path to the xml node
* @return the contents of the node converted to a double value.
*/
double xmlGetNodeDouble(void *, const char *);
void *xmlMarkId(void *);
#endif /* __XML_CONFIG */