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flightgear/utils/xmlgrep/xml.h
2009-05-02 00:44:20 +02:00

324 lines
10 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(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 process.
*
* @param xid XML-id
* @param node path to the node containing the subsection
* @return XML-subsection-id for further processing
*/
void *xmlNodeGet(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 process.
*
* @param xid XML-id
* @param node path to the node containing the subsection
* @return XML-subsection-id for further processing
*/
void *xmlNodeCopy(const void *, const char *);
/**
* Return the name of this node.
* The returned string has to be freed by the calling process.
*
* @param xid XML-id
* @return a newly alocated string containing the node name
*/
char *xmlNodeGetName(const void *);
/**
* Copy the name of this node in a pre-allocated buffer.
*
* @param xid XML-id
* @param buffer the buffer to copy the string to
* @param buflen length of the destination buffer
* @return the length of the node name
*/
size_t xmlNodeCopyName(const void *, char *, size_t);
/**
* Create a marker XML-id that starts out with the same settings as the
* refference XML-id.
*
* Marker id's are required when xmlNodeGetNum() and xmlNodeGetPos() are used
* to walk a number of nodes. The xmlNodeGetPos function adjusts the contents
* of the provided XML-id to keep track of it's position within the xml section.
* The returned XML-id is limited to the boundaries of the requested XML tag
* and has to be freed by the calling process.
*
* @param xid reference XML-id
* @return a copy of the reference XML-id
*/
void *xmlMarkId(const void *);
/**
* Get the number of nodes 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 xmlNodeGetNum(const void *, const char *);
/**
* Get the nth occurrence of node in the parent node.
* The return value should never be altered or freed by the caller.
*
* @param pid XML-id of the parent node of this node
* @param xid XML-id
* @param node name of the node to search for
* @param num specify which occurence to return
* @return XML-subsection-id for further processing or NULL if unsuccessful
*/
void *xmlNodeGetPos(const void *, void *, const char *, int);
/**
* Get a string of characters from the current node.
* The returned string has to be freed by the calling process.
*
* @param xid XML-id
* @return a newly alocated string containing the contents of the node
*/
char *xmlGetString(const void *);
/**
* Get a string of characters from the current node.
* 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 buffer the buffer to copy the string to
* @param buflen length of the destination buffer
* @return the length of the string
*/
size_t xmlCopyString(const void *, char *, size_t);
/**
* Compare the value of this node to a reference string.
* Comparing is done in a case insensitive way.
*
* @param xid XML-id
* @param str 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 str
*/
int xmlCompareString(const void *, const char *);
/**
* Get a string of characters from a specified xml path.
* The returned string has to be freed by the calling process.
*
* @param xid XML-id
* @param path path to the xml node
* @return a newly alocated string containing the contents of the node
*/
char *xmlNodeGetString(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
*/
size_t xmlNodeCopyString(const void *, const char *, char *, size_t);
/**
* 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 str 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 str
*/
int xmlNodeCompareString(const void *, const char *, const char *);
/**
* Get a string of characters from a named attribute.
* The returned string has to be freed by the calling process.
*
* @param xid XML-id
* @param name name of the attribute to acquire
* @return the contents of the node converted to an integer value
*/
char *xmlAttributeGetString(const void *, const char *);
/**
* Get a string of characters from a named attribute.
* 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 name name of the attribute to acquire.
* @param buffer the buffer to copy the string to
* @param buflen length of the destination buffer
* @return the length of the string
*/
size_t xmlAttributeCopyString(const void *, const char *, const char *, size_t);
/**
* Compare the value of an attribute to a reference string.
* Comparing is done in a case insensitive way.
*
* @param xid XML-id
* @param name name of the attribute to acquire.
* @param str 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 str
*/
int xmlAttributeCompareString(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(const 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 xmlNodeGetInt(const void *, const char *);
/**
* Get the integer value from the named attribute.
*
* @param xid XML-id
* @param name name of the attribute to acquire
* @return the contents of the node converted to an integer value
*/
long int xmlAttributeGetInt(const 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(const 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 xmlNodeGetDouble(const void *, const char *);
/**
* Get the double value from the named attribute.
*
* @param xid XML-id
* @param name name of the attribute to acquire
* @return the contents of the node converted to an integer value
*/
double xmlAttributeGetDouble(const void *, const char *);
#ifndef XML_NONVALIDATING
/**
* Get the error number of the last error and clear it.
*
* @param xid XML-id
* @return the numer of the last error, 0 means no error detected.
*/
int xmlErrorGetNo(const void *);
/**
* Get the line number of the last detected syntax error in the xml file.
*
* @param xid XML-id
* @return the line number of the detected syntax error.
*/
size_t xmlErrorGetLineNo(const void *);
/**
* Get a string that explains the last error.
*
* @param xid XML-id
* @return a string that explains the last error.
*/
const char *xmlErrorGetString(const void *);
#endif
#endif /* __XML_CONFIG */