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xyz_io.cpp
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# include <cstdlib>
# include <iostream>
# include <iomanip>
# include <ctime>
# include <cmath>
# include <fstream>
using namespace std;
# include "xyz_io.hpp"
//****************************************************************************80
bool ch_eqi ( char c1, char c2 )
//****************************************************************************80
//
// Purpose:
//
// CH_EQI is true if two characters are equal, disregarding case.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 13 June 2003
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, char C1, char C2, the characters to compare.
//
// Output, bool CH_EQI, is true if the two characters are equal,
// disregarding case.
//
{
if ( 97 <= c1 && c1 <= 122 )
{
c1 = c1 - 32;
}
if ( 97 <= c2 && c2 <= 122 )
{
c2 = c2 - 32;
}
return ( c1 == c2 );
}
//****************************************************************************80
int ch_to_digit ( char c )
//****************************************************************************80
//
// Purpose:
//
// CH_TO_DIGIT returns the integer value of a base 10 digit.
//
// Example:
//
// C DIGIT
// --- -----
// '0' 0
// '1' 1
// ... ...
// '9' 9
// ' ' 0
// 'X' -1
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 13 June 2003
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, char C, the decimal digit, '0' through '9' or blank are legal.
//
// Output, int CH_TO_DIGIT, the corresponding integer value. If C was
// 'illegal', then DIGIT is -1.
//
{
int digit;
if ( '0' <= c && c <= '9' )
{
digit = c - '0';
}
else if ( c == ' ' )
{
digit = 0;
}
else
{
digit = -1;
}
return digit;
}
//****************************************************************************80
void i4vec_copy ( int n, int a1[], int a2[] )
//****************************************************************************80
//
// Purpose:
//
// I4VEC_COPY copies an I4VEC.
//
// Discussion:
//
// An I4VEC is a vector of I4's.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 25 April 2007
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, int N, the number of entries in the vectors.
//
// Input, int A1[N], the vector to be copied.
//
// Output, int A2[N], the copy of A1.
//
{
int i;
for ( i = 0; i < n; i++ )
{
a2[i] = a1[i];
}
return;
}
//****************************************************************************80
void r8vec_copy ( int n, double a1[], double a2[] )
//****************************************************************************80
//
// Purpose:
//
// R8VEC_COPY copies an R8VEC.
//
// Discussion:
//
// An R8VEC is a vector of R8's.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 03 July 2005
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, int N, the number of entries in the vectors.
//
// Input, double A1[N], the vector to be copied.
//
// Output, double A2[N], the copy of A1.
//
{
int i;
for ( i = 0; i < n; i++ )
{
a2[i] = a1[i];
}
return;
}
//****************************************************************************80
int s_len_trim ( string s )
//****************************************************************************80
//
// Purpose:
//
// S_LEN_TRIM returns the length of a string to the last nonblank.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, a string.
//
// Output, int S_LEN_TRIM, the length of the string to the last nonblank.
// If S_LEN_TRIM is 0, then the string is entirely blank.
//
{
int n;
n = s.length ( );
while ( 0 < n )
{
if ( s[n-1] != ' ' )
{
return n;
}
n = n - 1;
}
return n;
}
//****************************************************************************80
int s_to_i4 ( string s, int *last, bool *error )
//****************************************************************************80
//
// Purpose:
//
// S_TO_I4 reads an I4 from a string.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, a string to be examined.
//
// Output, int *LAST, the last character of S used to make IVAL.
//
// Output, bool *ERROR is TRUE if an error occurred.
//
// Output, int *S_TO_I4, the integer value read from the string.
// If the string is blank, then IVAL will be returned 0.
//
{
char c;
int i;
int isgn;
int istate;
int ival;
*error = false;
istate = 0;
isgn = 1;
i = 0;
ival = 0;
for ( ; ; )
{
c = s[i];
i = i + 1;
//
// Haven't read anything.
//
if ( istate == 0 )
{
if ( c == ' ' )
{
}
else if ( c == '-' )
{
istate = 1;
isgn = -1;
}
else if ( c == '+' )
{
istate = 1;
isgn = + 1;
}
else if ( '0' <= c && c <= '9' )
{
istate = 2;
ival = c - '0';
}
else
{
*error = true;
return ival;
}
}
//
// Have read the sign, expecting digits.
//
else if ( istate == 1 )
{
if ( c == ' ' )
{
}
else if ( '0' <= c && c <= '9' )
{
istate = 2;
ival = c - '0';
}
else
{
*error = true;
return ival;
}
}
//
// Have read at least one digit, expecting more.
//
else if ( istate == 2 )
{
if ( '0' <= c && c <= '9' )
{
ival = 10 * (ival) + c - '0';
}
else
{
ival = isgn * ival;
*last = i - 1;
return ival;
}
}
}
//
// If we read all the characters in the string, see if we're OK.
//
if ( istate == 2 )
{
ival = isgn * ival;
*last = s_len_trim ( s );
}
else
{
*error = true;
*last = 0;
}
return ival;
}
//****************************************************************************80
bool s_to_i4vec ( string s, int n, int ivec[] )
//****************************************************************************80
//
// Purpose:
//
// S_TO_I4VEC reads an I4VEC from a string.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, the string to be read.
//
// Input, int N, the number of values expected.
//
// Output, int IVEC[N], the values read from the string.
//
// Output, bool S_TO_I4VEC, is TRUE if an error occurred.
//
{
int begin;
bool error;
int i;
int lchar;
int length;
begin = 0;
length = s.length ( );
error = 0;
for ( i = 0; i < n; i++ )
{
ivec[i] = s_to_i4 ( s.substr(begin,length), &lchar, &error );
if ( error )
{
return error;
}
begin = begin + lchar;
length = length - lchar;
}
return error;
}
//****************************************************************************80
double s_to_r8 ( string s, int *lchar, bool *error )
//****************************************************************************80
//
// Purpose:
//
// S_TO_R8 reads an R8 from a string.
//
// Discussion:
//
// This routine will read as many characters as possible until it reaches
// the end of the string, or encounters a character which cannot be
// part of the real number.
//
// Legal input is:
//
// 1 blanks,
// 2 '+' or '-' sign,
// 2.5 spaces
// 3 integer part,
// 4 decimal point,
// 5 fraction part,
// 6 'E' or 'e' or 'D' or 'd', exponent marker,
// 7 exponent sign,
// 8 exponent integer part,
// 9 exponent decimal point,
// 10 exponent fraction part,
// 11 blanks,
// 12 final comma or semicolon.
//
// with most quantities optional.
//
// Example:
//
// S R
//
// '1' 1.0
// ' 1 ' 1.0
// '1A' 1.0
// '12,34,56' 12.0
// ' 34 7' 34.0
// '-1E2ABCD' -100.0
// '-1X2ABCD' -1.0
// ' 2E-1' 0.2
// '23.45' 23.45
// '-4.2E+2' -420.0
// '17d2' 1700.0
// '-14e-2' -0.14
// 'e2' 100.0
// '-12.73e-9.23' -12.73 * 10.0**(-9.23)
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, the string containing the
// data to be read. Reading will begin at position 1 and
// terminate at the end of the string, or when no more
// characters can be read to form a legal real. Blanks,
// commas, or other nonnumeric data will, in particular,
// cause the conversion to halt.
//
// Output, int *LCHAR, the number of characters read from
// the string to form the number, including any terminating
// characters such as a trailing comma or blanks.
//
// Output, bool *ERROR, is true if an error occurred.
//
// Output, double S_TO_R8, the real value that was read from the string.
//
{
char c;
int ihave;
int isgn;
int iterm;
int jbot;
int jsgn;
int jtop;
int nchar;
int ndig;
double r;
double rbot;
double rexp;
double rtop;
char TAB = 9;
nchar = s_len_trim ( s );
*error = false;
r = 0.0;
*lchar = -1;
isgn = 1;
rtop = 0.0;
rbot = 1.0;
jsgn = 1;
jtop = 0;
jbot = 1;
ihave = 1;
iterm = 0;
for ( ; ; )
{
c = s[*lchar+1];
*lchar = *lchar + 1;
//
// Blank or TAB character.
//
if ( c == ' ' || c == TAB )
{
if ( ihave == 2 )
{
}
else if ( ihave == 6 || ihave == 7 )
{
iterm = 1;
}
else if ( 1 < ihave )
{
ihave = 11;
}
}
//
// Comma.
//
else if ( c == ',' || c == ';' )
{
if ( ihave != 1 )
{
iterm = 1;
ihave = 12;
*lchar = *lchar + 1;
}
}
//
// Minus sign.
//
else if ( c == '-' )
{
if ( ihave == 1 )
{
ihave = 2;
isgn = -1;
}
else if ( ihave == 6 )
{
ihave = 7;
jsgn = -1;
}
else
{
iterm = 1;
}
}
//
// Plus sign.
//
else if ( c == '+' )
{
if ( ihave == 1 )
{
ihave = 2;
}
else if ( ihave == 6 )
{
ihave = 7;
}
else
{
iterm = 1;
}
}
//
// Decimal point.
//
else if ( c == '.' )
{
if ( ihave < 4 )
{
ihave = 4;
}
else if ( 6 <= ihave && ihave <= 8 )
{
ihave = 9;
}
else
{
iterm = 1;
}
}
//
// Exponent marker.
//
else if ( ch_eqi ( c, 'E' ) || ch_eqi ( c, 'D' ) )
{
if ( ihave < 6 )
{
ihave = 6;
}
else
{
iterm = 1;
}
}
//
// Digit.
//
else if ( ihave < 11 && '0' <= c && c <= '9' )
{
if ( ihave <= 2 )
{
ihave = 3;
}
else if ( ihave == 4 )
{
ihave = 5;
}
else if ( ihave == 6 || ihave == 7 )
{
ihave = 8;
}
else if ( ihave == 9 )
{
ihave = 10;
}
ndig = ch_to_digit ( c );
if ( ihave == 3 )
{
rtop = 10.0 * rtop + ( double ) ndig;
}
else if ( ihave == 5 )
{
rtop = 10.0 * rtop + ( double ) ndig;
rbot = 10.0 * rbot;
}
else if ( ihave == 8 )
{
jtop = 10 * jtop + ndig;
}
else if ( ihave == 10 )
{
jtop = 10 * jtop + ndig;
jbot = 10 * jbot;
}
}
//
// Anything else is regarded as a terminator.
//
else
{
iterm = 1;
}
//
// If we haven't seen a terminator, and we haven't examined the
// entire string, go get the next character.
//
if ( iterm == 1 || nchar <= *lchar + 1 )
{
break;
}
}
//
// If we haven't seen a terminator, and we have examined the
// entire string, then we're done, and LCHAR is equal to NCHAR.
//
if ( iterm != 1 && (*lchar) + 1 == nchar )
{
*lchar = nchar;
}
//
// Number seems to have terminated. Have we got a legal number?
// Not if we terminated in states 1, 2, 6 or 7!
//
if ( ihave == 1 || ihave == 2 || ihave == 6 || ihave == 7 )
{
*error = true;
return r;
}
//
// Number seems OK. Form it.
//
if ( jtop == 0 )
{
rexp = 1.0;
}
else
{
if ( jbot == 1 )
{
rexp = pow ( 10.0, jsgn * jtop );
}
else
{
rexp = jsgn * jtop;
rexp = rexp / jbot;
rexp = pow ( 10.0, rexp );
}
}
r = isgn * rexp * rtop / rbot;
return r;
}
//****************************************************************************80
bool s_to_r8vec ( string s, int n, double rvec[] )
//****************************************************************************80
//
// Purpose:
//
// S_TO_R8VEC reads an R8VEC from a string.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, the string to be read.
//
// Input, int N, the number of values expected.
//
// Output, double RVEC[N], the values read from the string.
//
// Output, bool S_TO_R8VEC, is true if an error occurred.
//
{
int begin;
bool error;
int i;
int lchar;
int length;
begin = 0;
length = s.length ( );
error = 0;
for ( i = 0; i < n; i++ )
{
rvec[i] = s_to_r8 ( s.substr(begin,length), &lchar, &error );
if ( error )
{
return error;
}
begin = begin + lchar;
length = length - lchar;
}
return error;
}
//****************************************************************************80
int s_word_count ( string s )
//****************************************************************************80
//
// Purpose:
//
// S_WORD_COUNT counts the number of "words" in a string.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 05 July 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string S, the string to be examined.
//
// Output, int S_WORD_COUNT, the number of "words" in the string.
// Words are presumed to be separated by one or more blanks.
//
{
bool blank;
int char_count;
int i;
int word_count;
word_count = 0;
blank = true;
char_count = s.length ( );
for ( i = 0; i < char_count; i++ )
{
if ( isspace ( s[i] ) )
{
blank = true;
}
else if ( blank )
{
word_count = word_count + 1;
blank = false;
}
}
return word_count;
}
//****************************************************************************80
void timestamp ( void )
//****************************************************************************80
//
// Purpose:
//
// TIMESTAMP prints the current YMDHMS date as a time stamp.
//
// Example:
//
// 31 May 2001 09:45:54 AM
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 24 September 2003
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// None
//
{
# define TIME_SIZE 40
static char time_buffer[TIME_SIZE];
const struct tm *tm;
size_t len;
time_t now;
now = time ( NULL );
tm = localtime ( &now );
len = strftime ( time_buffer, TIME_SIZE, "%d %B %Y %I:%M:%S %p", tm );
cout << time_buffer << "\n";
return;
# undef TIME_SIZE
}
//****************************************************************************80
void xyz_data_print ( int point_num, double xyz[] )
//****************************************************************************80
//
// Purpose:
//
// XYZ_DATA_PRINT prints the data for an XYZ file.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 03 January 2009
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, int POINT_NUM, the number of points.
//
// Input, double XY[3*POINT_NUM], the arrays of coordinate data.
//
{
int j;
cout << "\n";
for ( j = 0; j < point_num; j++ )
{
cout << setw(10) << xyz[0+j*3] << " "
<< setw(10) << xyz[1+j*3] << " "
<< setw(10) << xyz[2+j*3] << "\n";
}
return;
}
//****************************************************************************80
void xyz_data_read ( string input_filename, int point_num, double xyz[] )
//****************************************************************************80
//
// Purpose:
//
// XYZ_DATA_READ reads the data in an XYZ file.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 25 October 2010
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, string INPUT_FILENAME, the name of the file.
//
// Input, int POINT_NUM, the number of points.
//
// Output, double XYZ[3*POINT_NUM], the point coordinates.
//
{
bool error;
int i;
ifstream input;
int j;
string text;
double temp[3];
input.open ( input_filename.c_str() );
if ( !input )
{
cout << "\n";
cout << "XYZ_DATA_READ - Fatal error!\n";
cout << " Cannot open the input file \"" << input_filename << "\".\n";
exit ( 1 );
}
j = 0;
while ( j < point_num )