libSBML C API  libSBML 5.20.4 C API
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translateMath.c

Translates infix formulas into MathML and vice-versa.

Translates infix formulas into MathML and vice-versa.

/**
* @file translateMath.c
* @brief Translates infix formulas into MathML and vice-versa
* @author Ben Bornstein
* @author Michael Hucka
*
* <!--------------------------------------------------------------------------
* This sample program is distributed under a different license than the rest
* of libSBML. This program uses the open-source MIT license, as follows:
*
* Copyright (c) 2013-2018 by the California Institute of Technology
* (California, USA), the European Bioinformatics Institute (EMBL-EBI, UK)
* and the University of Heidelberg (Germany), with support from the National
* Institutes of Health (USA) under grant R01GM070923. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Neither the name of the California Institute of Technology (Caltech), nor
* of the European Bioinformatics Institute (EMBL-EBI), nor of the University
* of Heidelberg, nor the names of any contributors, may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* ------------------------------------------------------------------------ -->
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
char *translateInfix (const char *formula);
char *translateMathML (const char *xml);
int
main (int argc, char *argv[])
{
char *line;
char *result;
char *buffer = (char*)calloc( 1, sizeof(char) );
int reading = 1;
unsigned long len;
printf( "\n" );
printf( "This program translates infix formulas into MathML and\n" );
printf( "vice-versa. An 'enter' or a 'return' on an empty line\n" );
printf( "triggers translation. Ctrl-C quits\n" );
printf( "\n" );
while (reading)
{
printf( "Enter an infix formula or MathML expression (Ctrl-C to quit):\n" );
printf( "\n" );
printf( "> " );
do
{
line = trim_whitespace(get_line(stdin));
len = (unsigned int)strlen(line);
if (len > 0)
{
buffer = (char *) realloc( buffer, 1 + strlen(buffer) + len );
strncat(buffer, line, len);
strncat(buffer, "\n", 1);
}
else
{
result = (buffer[0] == '<') ?
translateMathML(buffer) : translateInfix(buffer);
printf("Result:\n\n%s\n\n\n", result);
free(result);
reading = 0;
}
}
while (len > 0);
}
free(line);
free(buffer);
return 0;
}
/**
* _tTranslates_t _tthe_t _tgiven_t _tinfix_t _tformula_t _tinto_t _tMathML_t.
*
* @_treturn_t _tthe_t _tMathML_t _tas_t _ta_t _tstring_t. _tThe_t _tcaller_t _towns_t _tthe_t _tmemory_t _tand_t _tis_t
* _tresponsible_t _tfor_t _tfreeing_t _tit_t.
*/
char *
translateInfix (const char *formula)
{
char *result;
ASTNode_t *math = SBML_parseFormula(formula);
result = writeMathMLToString(math);
ASTNode_free(math);
return result;
}
/**
* _tTranslates_t _tthe_t _tgiven_t _tMathML_t _tinto_t _tan_t _tinfix_t _tformula_t. _tThe_t _tMathML_t _tmust_t
* _tcontain_t _tno_t _tleading_t _twhitespace_t, _tbut_t _tan_t _tXML_t _theader_t _tis_t _toptional_t.
*
* @_treturn_t _tthe_t _tinfix_t _tformula_t _tas_t _ta_t _tstring_t. _tThe_t _tcaller_t _towns_t _tthe_t _tmemory_t _tand_t
* _tis_t _tresponsible_t _tfor_t _tfreeing_t _tit_t.
*/
char *
translateMathML (const char *xml)
{
char *result;
ASTNode_t *math;
/**
* _tPrepend_t _tan_t _tXML_t _theader_t _tif_t _tnot_t _talready_t _tpresent_t.
*/
if (xml[0] == '<' && xml[1] != '?')
{
char *header = "<?xml version='1.0' encoding='UTF-8'?>\n";
char *content = (char *) calloc( strlen(xml) + strlen(header) + 1, sizeof(char) );
strncat(content, header, strlen(header));
strncat(content, xml, strlen(xml));
math = readMathMLFromString(content);
free(content);
}
else
{
math = readMathMLFromString(xml);
}
result = SBML_formulaToString(math);
ASTNode_free(math);
return result;
}
void ASTNode_free(ASTNode_t *node)
_tFrees_t _tthe_t _tgiven_t _tASTNode_t_t _tstructure_t, _tincluding_t _tany_t _tchild_t _tnodes_t.
Definition ASTNode.cpp:4644
char * SBML_formulaToString(const ASTNode_t *tree)
@_tif_t _tconly_t @_tmemberof_t _tASTNode_t_t @_tendif_t
Definition FormulaFormatter.cpp:56
Formats an AST formula tree as an SBML formula string.
ASTNode_t * SBML_parseFormula(const char *formula)
@_tendcond_t
Definition FormulaParser.cpp:404
Parses an SBML formula string into an AST.
ASTNode_t * readMathMLFromString(const char *xml)
@_tendcond_t
Definition MathML.cpp:2273
char * writeMathMLToString(const ASTNode *node)
@_tif_t _tconly_t @_tmemberof_t _tASTNode_t_t @_tendif_t
Definition MathML.cpp:2428
Utilities for reading and writing MathML to/from text strings.
Utility functions.