fastxml - This demo contains a port of the FastXML library.…

Users » rolf » Code » fastxml

This demo contains a port of the FastXML library. FastXML was hosted on geocities and is offline now. The library itself is contained into two files header and cpp and very easy to use. I don't know how many RAM it eats up but XML is probably not the best thing to use on an microcontroler. Decide your self but be warned. I told you so!!

Dependencies: mbed

fastxml/fastxml.cpp@0:37e8c5cd04e8, 2009-12-11 (annotated)

Committer:: rolf
Date:: Fri Dec 11 15:32:41 2009 +0000
Revision:: 0:37e8c5cd04e8

Who changed what in which revision?

User	Revision	Line number	New contents of line
rolf	0:37e8c5cd04e8	1	#include <stdio.h>
rolf	0:37e8c5cd04e8	2	#include <stdlib.h>
rolf	0:37e8c5cd04e8	3	#include <string.h>
rolf	0:37e8c5cd04e8	4	#include <assert.h>
rolf	0:37e8c5cd04e8	5
rolf	0:37e8c5cd04e8	6	#include "fastxml.h"
rolf	0:37e8c5cd04e8	7
rolf	0:37e8c5cd04e8	8	/*!
rolf	0:37e8c5cd04e8	9	**
rolf	0:37e8c5cd04e8	10	** Copyright (c) 2009 by John W. Ratcliff mailto:jratcliffscarab@gmail.com
rolf	0:37e8c5cd04e8	11	**
rolf	0:37e8c5cd04e8	12	** The MIT license:
rolf	0:37e8c5cd04e8	13	**
rolf	0:37e8c5cd04e8	14	** Permission is hereby granted, MEMALLOC_FREE of charge, to any person obtaining a copy
rolf	0:37e8c5cd04e8	15	** of this software and associated documentation files (the "Software"), to deal
rolf	0:37e8c5cd04e8	16	** in the Software without restriction, including without limitation the rights
rolf	0:37e8c5cd04e8	17	** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
rolf	0:37e8c5cd04e8	18	** copies of the Software, and to permit persons to whom the Software is furnished
rolf	0:37e8c5cd04e8	19	** to do so, subject to the following conditions:
rolf	0:37e8c5cd04e8	20	**
rolf	0:37e8c5cd04e8	21	** The above copyright notice and this permission notice shall be included in all
rolf	0:37e8c5cd04e8	22	** copies or substantial portions of the Software.
rolf	0:37e8c5cd04e8	23
rolf	0:37e8c5cd04e8	24	** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
rolf	0:37e8c5cd04e8	25	** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
rolf	0:37e8c5cd04e8	26	** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
rolf	0:37e8c5cd04e8	27	** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
rolf	0:37e8c5cd04e8	28	** WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
rolf	0:37e8c5cd04e8	29	** CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
rolf	0:37e8c5cd04e8	30
rolf	0:37e8c5cd04e8	31	*/
rolf	0:37e8c5cd04e8	32
rolf	0:37e8c5cd04e8	33
rolf	0:37e8c5cd04e8	34	class MyFastXml : public FastXml {
rolf	0:37e8c5cd04e8	35	public:
rolf	0:37e8c5cd04e8	36	enum CharType {
rolf	0:37e8c5cd04e8	37	CT_DATA,
rolf	0:37e8c5cd04e8	38	CT_EOF,
rolf	0:37e8c5cd04e8	39	CT_SOFT,
rolf	0:37e8c5cd04e8	40	CT_END_OF_ELEMENT, // either a forward slash or a greater than symbol
rolf	0:37e8c5cd04e8	41	CT_END_OF_LINE,
rolf	0:37e8c5cd04e8	42	};
rolf	0:37e8c5cd04e8	43
rolf	0:37e8c5cd04e8	44	MyFastXml(void) {
rolf	0:37e8c5cd04e8	45	mInputData = 0;
rolf	0:37e8c5cd04e8	46	memset(mTypes,CT_DATA,256);
rolf	0:37e8c5cd04e8	47	mTypes[0] = CT_EOF;
rolf	0:37e8c5cd04e8	48	mTypes[32] = CT_SOFT;
rolf	0:37e8c5cd04e8	49	mTypes[9] = CT_SOFT;
rolf	0:37e8c5cd04e8	50	mTypes['/'] = CT_END_OF_ELEMENT;
rolf	0:37e8c5cd04e8	51	mTypes['>'] = CT_END_OF_ELEMENT;
rolf	0:37e8c5cd04e8	52	mTypes['?'] = CT_END_OF_ELEMENT;
rolf	0:37e8c5cd04e8	53	mTypes[10] = CT_END_OF_LINE;
rolf	0:37e8c5cd04e8	54	mTypes[13] = CT_END_OF_LINE;
rolf	0:37e8c5cd04e8	55	mError = 0;
rolf	0:37e8c5cd04e8	56	}
rolf	0:37e8c5cd04e8	57	~MyFastXml(void) {
rolf	0:37e8c5cd04e8	58	release();
rolf	0:37e8c5cd04e8	59	}
rolf	0:37e8c5cd04e8	60
rolf	0:37e8c5cd04e8	61	void release(void) {
rolf	0:37e8c5cd04e8	62	if(mInputData) {
rolf	0:37e8c5cd04e8	63	free(mInputData);
rolf	0:37e8c5cd04e8	64	mInputData = 0;
rolf	0:37e8c5cd04e8	65	}
rolf	0:37e8c5cd04e8	66	mError = 0;
rolf	0:37e8c5cd04e8	67	}
rolf	0:37e8c5cd04e8	68
rolf	0:37e8c5cd04e8	69	inline char nextSoft(char scan) {
rolf	0:37e8c5cd04e8	70	while ( scan && mTypes[scan] != CT_SOFT ) scan++;
rolf	0:37e8c5cd04e8	71	return scan;
rolf	0:37e8c5cd04e8	72	}
rolf	0:37e8c5cd04e8	73
rolf	0:37e8c5cd04e8	74	inline char nextSoftOrClose(char scan,bool &close) {
rolf	0:37e8c5cd04e8	75	while ( scan && mTypes[scan] != CT_SOFT && *scan != '>' ) scan++;
rolf	0:37e8c5cd04e8	76	close = *scan == '>';
rolf	0:37e8c5cd04e8	77	return scan;
rolf	0:37e8c5cd04e8	78	}
rolf	0:37e8c5cd04e8	79
rolf	0:37e8c5cd04e8	80	inline char nextSep(char scan) {
rolf	0:37e8c5cd04e8	81	while ( scan && mTypes[scan] != CT_SOFT && *scan != '=' ) scan++;
rolf	0:37e8c5cd04e8	82	return scan;
rolf	0:37e8c5cd04e8	83	}
rolf	0:37e8c5cd04e8	84
rolf	0:37e8c5cd04e8	85	inline char * skipNextData(char *scan) {
rolf	0:37e8c5cd04e8	86	// while we have data, and we encounter soft seperators or line feeds...
rolf	0:37e8c5cd04e8	87	while ( scan && mTypes[scan] == CT_SOFT \|\| mTypes[*scan] == CT_END_OF_LINE ) {
rolf	0:37e8c5cd04e8	88	if ( *scan == 13 ) mLineNo++;
rolf	0:37e8c5cd04e8	89	scan++;
rolf	0:37e8c5cd04e8	90	}
rolf	0:37e8c5cd04e8	91	return scan;
rolf	0:37e8c5cd04e8	92	}
rolf	0:37e8c5cd04e8	93
rolf	0:37e8c5cd04e8	94	char * processClose(char c,const char element,char scan,int argc,const char *argv,FastXmlInterface iface) {
rolf	0:37e8c5cd04e8	95	if ( c == '/' \|\| c == '?' ) {
rolf	0:37e8c5cd04e8	96	if ( *scan != '>' ) { // unexepected character!
rolf	0:37e8c5cd04e8	97	mError = "Expected an element close character immediately after the '/' or '?' character.";
rolf	0:37e8c5cd04e8	98	return 0;
rolf	0:37e8c5cd04e8	99	}
rolf	0:37e8c5cd04e8	100	scan++;
rolf	0:37e8c5cd04e8	101	bool ok = iface->processElement(element,argc,argv,0,mLineNo);
rolf	0:37e8c5cd04e8	102	if ( !ok )
rolf	0:37e8c5cd04e8	103	{
rolf	0:37e8c5cd04e8	104	mError = "User aborted the parsing process";
rolf	0:37e8c5cd04e8	105	return 0;
rolf	0:37e8c5cd04e8	106	}
rolf	0:37e8c5cd04e8	107	}
rolf	0:37e8c5cd04e8	108	else
rolf	0:37e8c5cd04e8	109	{
rolf	0:37e8c5cd04e8	110	scan = skipNextData(scan);
rolf	0:37e8c5cd04e8	111	char *data = scan; // this is the data portion of the element, only copies memory if we encounter line feeds
rolf	0:37e8c5cd04e8	112	char *dest_data = 0;
rolf	0:37e8c5cd04e8	113	while ( scan && scan != '<' )
rolf	0:37e8c5cd04e8	114	{
rolf	0:37e8c5cd04e8	115	if ( mTypes[*scan] == CT_END_OF_LINE )
rolf	0:37e8c5cd04e8	116	{
rolf	0:37e8c5cd04e8	117	if ( *scan == 13 ) mLineNo++;
rolf	0:37e8c5cd04e8	118	dest_data = scan;
rolf	0:37e8c5cd04e8	119	*dest_data++ = 32; // replace the linefeed with a space...
rolf	0:37e8c5cd04e8	120	scan = skipNextData(scan);
rolf	0:37e8c5cd04e8	121	while ( scan && scan != '<' )
rolf	0:37e8c5cd04e8	122	{
rolf	0:37e8c5cd04e8	123	if ( mTypes[*scan] == CT_END_OF_LINE )
rolf	0:37e8c5cd04e8	124	{
rolf	0:37e8c5cd04e8	125	if ( *scan == 13 ) mLineNo++;
rolf	0:37e8c5cd04e8	126	*dest_data++ = 32; // replace the linefeed with a space...
rolf	0:37e8c5cd04e8	127	scan = skipNextData(scan);
rolf	0:37e8c5cd04e8	128	}
rolf	0:37e8c5cd04e8	129	else
rolf	0:37e8c5cd04e8	130	{
rolf	0:37e8c5cd04e8	131	dest_data++ = scan++;
rolf	0:37e8c5cd04e8	132	}
rolf	0:37e8c5cd04e8	133	}
rolf	0:37e8c5cd04e8	134	break;
rolf	0:37e8c5cd04e8	135	}
rolf	0:37e8c5cd04e8	136	else
rolf	0:37e8c5cd04e8	137	scan++;
rolf	0:37e8c5cd04e8	138	}
rolf	0:37e8c5cd04e8	139	if ( *scan == '<' )
rolf	0:37e8c5cd04e8	140	{
rolf	0:37e8c5cd04e8	141	if ( dest_data )
rolf	0:37e8c5cd04e8	142	{
rolf	0:37e8c5cd04e8	143	*dest_data = 0;
rolf	0:37e8c5cd04e8	144	}
rolf	0:37e8c5cd04e8	145	else
rolf	0:37e8c5cd04e8	146	{
rolf	0:37e8c5cd04e8	147	*scan = 0;
rolf	0:37e8c5cd04e8	148	}
rolf	0:37e8c5cd04e8	149	scan++; // skip it..
rolf	0:37e8c5cd04e8	150	if ( *data == 0 ) data = 0;
rolf	0:37e8c5cd04e8	151	bool ok = iface->processElement(element,argc,argv,data,mLineNo);
rolf	0:37e8c5cd04e8	152	if ( !ok )
rolf	0:37e8c5cd04e8	153	{
rolf	0:37e8c5cd04e8	154	mError = "User aborted the parsing process";
rolf	0:37e8c5cd04e8	155	return 0;
rolf	0:37e8c5cd04e8	156	}
rolf	0:37e8c5cd04e8	157	if ( *scan == '/' )
rolf	0:37e8c5cd04e8	158	{
rolf	0:37e8c5cd04e8	159	while ( scan && scan != '>' ) scan++;
rolf	0:37e8c5cd04e8	160	scan++;
rolf	0:37e8c5cd04e8	161	}
rolf	0:37e8c5cd04e8	162	}
rolf	0:37e8c5cd04e8	163	else
rolf	0:37e8c5cd04e8	164	{
rolf	0:37e8c5cd04e8	165	mError = "Data portion of an element wasn't terminated properly";
rolf	0:37e8c5cd04e8	166	return 0;
rolf	0:37e8c5cd04e8	167	}
rolf	0:37e8c5cd04e8	168	}
rolf	0:37e8c5cd04e8	169	return scan;
rolf	0:37e8c5cd04e8	170	}
rolf	0:37e8c5cd04e8	171
rolf	0:37e8c5cd04e8	172	virtual bool processXml(const char inputData,unsigned int dataLen,FastXmlInterface iface)
rolf	0:37e8c5cd04e8	173	{
rolf	0:37e8c5cd04e8	174	bool ret = true;
rolf	0:37e8c5cd04e8	175
rolf	0:37e8c5cd04e8	176	#define MAX_ATTRIBUTE 2048 // can't imagine having more than 2,048 attributes in a single element right?
rolf	0:37e8c5cd04e8	177
rolf	0:37e8c5cd04e8	178	release();
rolf	0:37e8c5cd04e8	179	mInputData = (char *)malloc(dataLen+1);
rolf	0:37e8c5cd04e8	180	memcpy(mInputData,inputData,dataLen);
rolf	0:37e8c5cd04e8	181	mInputData[dataLen] = 0;
rolf	0:37e8c5cd04e8	182
rolf	0:37e8c5cd04e8	183	mLineNo = 1;
rolf	0:37e8c5cd04e8	184
rolf	0:37e8c5cd04e8	185	char *element;
rolf	0:37e8c5cd04e8	186
rolf	0:37e8c5cd04e8	187	char *scan = mInputData;
rolf	0:37e8c5cd04e8	188	if ( *scan == '<' )
rolf	0:37e8c5cd04e8	189	{
rolf	0:37e8c5cd04e8	190	scan++;
rolf	0:37e8c5cd04e8	191	while ( *scan )
rolf	0:37e8c5cd04e8	192	{
rolf	0:37e8c5cd04e8	193	scan = skipNextData(scan);
rolf	0:37e8c5cd04e8	194	if ( *scan == 0 ) return ret;
rolf	0:37e8c5cd04e8	195	if ( *scan == '<' )
rolf	0:37e8c5cd04e8	196	{
rolf	0:37e8c5cd04e8	197	scan++;
rolf	0:37e8c5cd04e8	198	}
rolf	0:37e8c5cd04e8	199	if ( scan == '/' \|\| scan == '?' )
rolf	0:37e8c5cd04e8	200	{
rolf	0:37e8c5cd04e8	201	while ( scan && scan != '>' ) scan++;
rolf	0:37e8c5cd04e8	202	scan++;
rolf	0:37e8c5cd04e8	203	}
rolf	0:37e8c5cd04e8	204	else
rolf	0:37e8c5cd04e8	205	{
rolf	0:37e8c5cd04e8	206	element = scan;
rolf	0:37e8c5cd04e8	207	int argc = 0;
rolf	0:37e8c5cd04e8	208	const char *argv[MAX_ATTRIBUTE];
rolf	0:37e8c5cd04e8	209	bool close;
rolf	0:37e8c5cd04e8	210	scan = nextSoftOrClose(scan,close);
rolf	0:37e8c5cd04e8	211	if ( close )
rolf	0:37e8c5cd04e8	212	{
rolf	0:37e8c5cd04e8	213	char c = *(scan-1);
rolf	0:37e8c5cd04e8	214	if ( c != '?' && c != '/' )
rolf	0:37e8c5cd04e8	215	{
rolf	0:37e8c5cd04e8	216	c = '>';
rolf	0:37e8c5cd04e8	217	}
rolf	0:37e8c5cd04e8	218	*scan = 0;
rolf	0:37e8c5cd04e8	219	scan++;
rolf	0:37e8c5cd04e8	220	scan = processClose(c,element,scan,argc,argv,iface);
rolf	0:37e8c5cd04e8	221	if ( !scan ) return false;
rolf	0:37e8c5cd04e8	222	}
rolf	0:37e8c5cd04e8	223	else
rolf	0:37e8c5cd04e8	224	{
rolf	0:37e8c5cd04e8	225	if ( *scan == 0 ) return ret;
rolf	0:37e8c5cd04e8	226	*scan = 0; // place a zero byte to indicate the end of the element name...
rolf	0:37e8c5cd04e8	227	scan++;
rolf	0:37e8c5cd04e8	228
rolf	0:37e8c5cd04e8	229	while ( *scan )
rolf	0:37e8c5cd04e8	230	{
rolf	0:37e8c5cd04e8	231	scan = skipNextData(scan); // advance past any soft seperators (tab or space)
rolf	0:37e8c5cd04e8	232
rolf	0:37e8c5cd04e8	233	if ( mTypes[*scan] == CT_END_OF_ELEMENT )
rolf	0:37e8c5cd04e8	234	{
rolf	0:37e8c5cd04e8	235	char c = *scan++;
rolf	0:37e8c5cd04e8	236	scan = processClose(c,element,scan,argc,argv,iface);
rolf	0:37e8c5cd04e8	237	if ( !scan ) return false;
rolf	0:37e8c5cd04e8	238	break;
rolf	0:37e8c5cd04e8	239	}
rolf	0:37e8c5cd04e8	240	else
rolf	0:37e8c5cd04e8	241	{
rolf	0:37e8c5cd04e8	242	if ( argc >= MAX_ATTRIBUTE )
rolf	0:37e8c5cd04e8	243	{
rolf	0:37e8c5cd04e8	244	mError = "encountered too many attributes";
rolf	0:37e8c5cd04e8	245	return false;
rolf	0:37e8c5cd04e8	246	}
rolf	0:37e8c5cd04e8	247	argv[argc] = scan;
rolf	0:37e8c5cd04e8	248	scan = nextSep(scan); // scan up to a space, or an equal
rolf	0:37e8c5cd04e8	249	if ( *scan )
rolf	0:37e8c5cd04e8	250	{
rolf	0:37e8c5cd04e8	251	if ( *scan != '=' )
rolf	0:37e8c5cd04e8	252	{
rolf	0:37e8c5cd04e8	253	*scan = 0;
rolf	0:37e8c5cd04e8	254	scan++;
rolf	0:37e8c5cd04e8	255	while ( scan && scan != '=' ) scan++;
rolf	0:37e8c5cd04e8	256	if ( *scan == '=' ) scan++;
rolf	0:37e8c5cd04e8	257	}
rolf	0:37e8c5cd04e8	258	else
rolf	0:37e8c5cd04e8	259	{
rolf	0:37e8c5cd04e8	260	*scan=0;
rolf	0:37e8c5cd04e8	261	scan++;
rolf	0:37e8c5cd04e8	262	}
rolf	0:37e8c5cd04e8	263	if ( *scan ) // if not eof...
rolf	0:37e8c5cd04e8	264	{
rolf	0:37e8c5cd04e8	265	scan = skipNextData(scan);
rolf	0:37e8c5cd04e8	266	if ( *scan == 34 )
rolf	0:37e8c5cd04e8	267	{
rolf	0:37e8c5cd04e8	268	scan++;
rolf	0:37e8c5cd04e8	269	argc++;
rolf	0:37e8c5cd04e8	270	argv[argc] = scan;
rolf	0:37e8c5cd04e8	271	argc++;
rolf	0:37e8c5cd04e8	272	while ( scan && scan != 34 ) scan++;
rolf	0:37e8c5cd04e8	273	if ( *scan == 34 )
rolf	0:37e8c5cd04e8	274	{
rolf	0:37e8c5cd04e8	275	*scan = 0;
rolf	0:37e8c5cd04e8	276	scan++;
rolf	0:37e8c5cd04e8	277	}
rolf	0:37e8c5cd04e8	278	else
rolf	0:37e8c5cd04e8	279	{
rolf	0:37e8c5cd04e8	280	mError = "Failed to find closing quote for attribute";
rolf	0:37e8c5cd04e8	281	return false;
rolf	0:37e8c5cd04e8	282	}
rolf	0:37e8c5cd04e8	283	}
rolf	0:37e8c5cd04e8	284	else
rolf	0:37e8c5cd04e8	285	{
rolf	0:37e8c5cd04e8	286	mError = "Expected quote to begin attribute";
rolf	0:37e8c5cd04e8	287	return false;
rolf	0:37e8c5cd04e8	288	}
rolf	0:37e8c5cd04e8	289	}
rolf	0:37e8c5cd04e8	290	}
rolf	0:37e8c5cd04e8	291	}
rolf	0:37e8c5cd04e8	292	}
rolf	0:37e8c5cd04e8	293	}
rolf	0:37e8c5cd04e8	294	}
rolf	0:37e8c5cd04e8	295	}
rolf	0:37e8c5cd04e8	296	}
rolf	0:37e8c5cd04e8	297	else
rolf	0:37e8c5cd04e8	298	{
rolf	0:37e8c5cd04e8	299	mError = "Expected the start of an element '<' at this location.";
rolf	0:37e8c5cd04e8	300	ret = false; // unexpected character!?
rolf	0:37e8c5cd04e8	301	}
rolf	0:37e8c5cd04e8	302
rolf	0:37e8c5cd04e8	303	return ret;
rolf	0:37e8c5cd04e8	304	}
rolf	0:37e8c5cd04e8	305
rolf	0:37e8c5cd04e8	306	virtual const char *getError(int &lineno) {
rolf	0:37e8c5cd04e8	307	const char *ret = mError;
rolf	0:37e8c5cd04e8	308	lineno = mLineNo;
rolf	0:37e8c5cd04e8	309	mError = 0;
rolf	0:37e8c5cd04e8	310	return ret;
rolf	0:37e8c5cd04e8	311	}
rolf	0:37e8c5cd04e8	312
rolf	0:37e8c5cd04e8	313	private:
rolf	0:37e8c5cd04e8	314	char mTypes[256];
rolf	0:37e8c5cd04e8	315	char *mInputData;
rolf	0:37e8c5cd04e8	316	int mLineNo;
rolf	0:37e8c5cd04e8	317	const char *mError;
rolf	0:37e8c5cd04e8	318	};
rolf	0:37e8c5cd04e8	319
rolf	0:37e8c5cd04e8	320
rolf	0:37e8c5cd04e8	321
rolf	0:37e8c5cd04e8	322	FastXml *createFastXml(void) {
rolf	0:37e8c5cd04e8	323	MyFastXml *f = new MyFastXml;
rolf	0:37e8c5cd04e8	324	return static_cast< FastXml *>(f);
rolf	0:37e8c5cd04e8	325	}
rolf	0:37e8c5cd04e8	326
rolf	0:37e8c5cd04e8	327	void releaseFastXml(FastXml *f) {
rolf	0:37e8c5cd04e8	328	MyFastXml m = static_cast< MyFastXml >(f);
rolf	0:37e8c5cd04e8	329	delete m;
rolf	0:37e8c5cd04e8	330	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	11 Dec 2009
Imports:	17
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

fastxml/fastxml.cpp@0:37e8c5cd04e8, 2009-12-11 (annotated)

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