Hello,
I found this waitbar functioning pgm in a forum which does the same work as a matlab waitbar. However this pgm has an error and i cudnot figure it out. Can anyone pls correct it.
Thanks,
Prads
[code=c]
/*************** *************** *************** *************** **************
* Waitbar function -- displays progress of lengthy calculations
* -------------------------------------------------------------
* Copyright (c) 2002 Quentin Spencer <qspencer@ieee. org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*
*************** *************** *************** *************** *************/
#include <octave/oct.h>
#if defined (HAVE_TERM_H)
# include <term.h>
#elif defined (HAVE_TERMCAP_H )
# include <termcap.h>
#endif
#define BUF_SIZE 256
#define MAX_LEN 240
#define DEFAULT_LEN 50
#define BAR_CHAR '#'
#define SPACING 3
static bool no_terminal=fal se;
DEFUN_DLD(waitb ar, args, nargout,
"waitbar(...);\ n\
WAITBAR displays a text-based wait bar. This function\n\
is similar to the Matlab waitbar command, but it is\n\
a text, rather than graphical function.\n\n\
A typical usage of WAITBAR in a lengthy computation\n\
(inside a FOR loop, for example) is as follows:\n\n\
for i=1:1000\n\
## computation\n\
waitbar(i/1000);\n\
end\n\n\
WAITBAR(X,TITLE ), where 0 <= X <= 1, sets the position of\n\
the waitbar to the fractional length X. Values of X exactly\n\
equal to 0 or 1 clear the waitbar. The optional second\n\
argument TITLE sets the waitbar caption to TITLE.\n\n\
If Octave is running in a smart terminal, the width is\n\
automatically detected, and the title is displayed in the\n\
waitbar (and truncated if it is too long). Otherwise, the\n\
title is not displayed and the width is initialized to a\n\
default of 50 characters, or it can be set to N characters\n\
with WAITBAR(0,N). If no terminal is detected (such as when\n\
Octave is run in batch mode and output is redirected), no\n\
output is generated.\n\n\
For compatibility with the Matlab version of this function\n\
(which is graphical rather than text-based), additional\n\
arguments are ignored, but there are no guarantees of perfect\n\
compatibility." )
{
static char print_buf[BUF_SIZE];
static int n_chars_old;
static int pct_int_old;
static int length;
#if defined(USE_TER M)
static char term_buffer[1024];
static char *begin_rv, *end_rv;
static int brvlen, ervlen, pct_pos;
static bool smart_term;
static bool newtitle = false;
static charMatrix title;
int j;
#endif
static char *term;
static bool init;
double pct;
int i;
octave_value_li st retval;
retval(0) = Matrix(0,0);
int nargin = args.length();
if (nargin < 1) {
print_usage ();
return retval;
}
if(no_terminal)
return retval;
pct = args(0).double_ value();
if(pct>1.0) pct = 1.0; // to prevent overflow
#if defined(USE_TER M)
if(nargin==2 && args(1).is_stri ng())
{
newtitle = true;
title = args(1).string_ value();
}
if(nargin==3)
{
newtitle = true;
title = args(2).string_ value();
}
#endif
if(pct==0.0 || pct==1.0)
{
init = true;
term = getenv("TERM");
if(!term)
{
no_terminal = true;
return retval;
}
#if defined (USE_TERM)
i = tgetnum("co");
smart_term = i ? true : false;
if(nargin==1 || args(1).is_stri ng())
length = smart_term ? i-1 : DEFAULT_LEN;
#else
if(nargin==1)
length = DEFAULT_LEN;
#endif
else
if(nargin==2 && !(args(1).is_st ring()))
{
length = args(1).int_val ue();
if(length>MAX_L EN) length = MAX_LEN;
if(length<=0) length = DEFAULT_LEN;
}
#if defined (USE_TERM)
pct_pos = length/2-2;
if(smart_term)
{
// get terminal strings ("rv"="rever se video")
char* buf_ptr = term_buffer;
begin_rv = tgetstr("so", &buf_ptr);
end_rv = tgetstr("se", &buf_ptr);
brvlen = 0; buf_ptr = begin_rv;
while(buf_ptr[++brvlen]);
ervlen = 0; buf_ptr = end_rv;
while(buf_ptr[++ervlen]);
// initialize print buffer
for(i=0; i<BUF_SIZE; ++i)
print_buf[i] = ' ';
print_buf[length+brvlen+e rvlen+1] = '\r';
print_buf[length+brvlen+e rvlen+2] = '\0';
for(i=0; i<brvlen; ++i)
print_buf[i] = begin_rv[i];
for(i=0; i<ervlen; ++i)
print_buf[i+brvlen] = end_rv[i];
fputs(print_buf ,stdout);
if(title.length ())
newtitle = true;
}
else
{
#endif
for(i=0; i<BUF_SIZE; ++i)
print_buf[i] = ' ';
print_buf[length+8] = '\r';
print_buf[length+9] = '\0';
fputs(print_buf ,stdout);
print_buf[0] = '[';
print_buf[length+1] = ']';
#if defined (USE_TERM)
}
#endif
n_chars_old = 0;
fflush(stdout);
return retval;
}
else
{
// calculate position
int n_chars=(int)(p ct*length+0.5);
int pct_int=(int)(p ct*100.0+0.5);
// check to see if we got this far without initialization
if(init==false)
{
Fwaitbar(octave _value(0.0),0);
fputs(print_buf ,stdout);
fflush(stdout);
}
// check to see of output needs to be updated
#if !defined (USE_TERM)
if(n_chars!=n_c hars_old || pct_int!=pct_in t_old)
{
#else
if(n_chars!=n_c hars_old || pct_int!=pct_in t_old || newtitle)
{
if(smart_term)
{
static char pct_str[5];
sprintf(pct_str ,"%3i%%",pct_in t);
// Insert the title
if(newtitle)
{
pct_pos = length-SPACING*2;
for(i=SPACING+b rvlen; i<pct_pos+brvle n-SPACING; ++i)
print_buf[ i>=n_chars_old+ brvlen ? i+ervlen : i ] = ' ';
for(i=SPACING+b rvlen, j=0; j<title.length( ); ++i, ++j)
if(i<pct_pos+br vlen-SPACING)
print_buf[ i>=n_chars_old ? i+ervlen : i ] = title(0,j);
newtitle = false;
}
// Insert the percentage string
for(i=pct_pos+b rvlen, j=0; j<4; ++i, ++j)
print_buf[ i>=n_chars_old+ brvlen ? i+ervlen : i ] = pct_str[j];
// Move print_buf characters
if(n_chars_old< n_chars)
for(i=n_chars_o ld+brvlen; i<n_chars+brvle n; ++i)
print_buf[i] = print_buf[i+ervlen];
else
for(i=n_chars_o ld+brvlen-1; i>=n_chars+brvl en; --i)
print_buf[i+ervlen] = print_buf[i];
// Insert end of reverse video
for(i=n_chars+b rvlen, j=0; j<ervlen; ++i, ++j)
print_buf[i] = end_rv[j];
}
else
{
#endif
if(n_chars>=n_c hars_old)
for(int i=n_chars_old+1 ; i<=n_chars; ++i)
print_buf[i] = BAR_CHAR;
else
for(int i=n_chars+1; i<=n_chars_old ; ++i)
print_buf[i] = ' ';
sprintf(&(print _buf[length+3])," %3i%%\r",pct_in t);
#if defined (USE_TERM)
}
#endif
fputs(print_buf ,stdout);
fflush(stdout);
n_chars_old = n_chars;
pct_int_old = pct_int;
}
}
return retval;
}[/code]
I found this waitbar functioning pgm in a forum which does the same work as a matlab waitbar. However this pgm has an error and i cudnot figure it out. Can anyone pls correct it.
Thanks,
Prads
[code=c]
/*************** *************** *************** *************** **************
* Waitbar function -- displays progress of lengthy calculations
* -------------------------------------------------------------
* Copyright (c) 2002 Quentin Spencer <qspencer@ieee. org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*
*************** *************** *************** *************** *************/
#include <octave/oct.h>
#if defined (HAVE_TERM_H)
# include <term.h>
#elif defined (HAVE_TERMCAP_H )
# include <termcap.h>
#endif
#define BUF_SIZE 256
#define MAX_LEN 240
#define DEFAULT_LEN 50
#define BAR_CHAR '#'
#define SPACING 3
static bool no_terminal=fal se;
DEFUN_DLD(waitb ar, args, nargout,
"waitbar(...);\ n\
WAITBAR displays a text-based wait bar. This function\n\
is similar to the Matlab waitbar command, but it is\n\
a text, rather than graphical function.\n\n\
A typical usage of WAITBAR in a lengthy computation\n\
(inside a FOR loop, for example) is as follows:\n\n\
for i=1:1000\n\
## computation\n\
waitbar(i/1000);\n\
end\n\n\
WAITBAR(X,TITLE ), where 0 <= X <= 1, sets the position of\n\
the waitbar to the fractional length X. Values of X exactly\n\
equal to 0 or 1 clear the waitbar. The optional second\n\
argument TITLE sets the waitbar caption to TITLE.\n\n\
If Octave is running in a smart terminal, the width is\n\
automatically detected, and the title is displayed in the\n\
waitbar (and truncated if it is too long). Otherwise, the\n\
title is not displayed and the width is initialized to a\n\
default of 50 characters, or it can be set to N characters\n\
with WAITBAR(0,N). If no terminal is detected (such as when\n\
Octave is run in batch mode and output is redirected), no\n\
output is generated.\n\n\
For compatibility with the Matlab version of this function\n\
(which is graphical rather than text-based), additional\n\
arguments are ignored, but there are no guarantees of perfect\n\
compatibility." )
{
static char print_buf[BUF_SIZE];
static int n_chars_old;
static int pct_int_old;
static int length;
#if defined(USE_TER M)
static char term_buffer[1024];
static char *begin_rv, *end_rv;
static int brvlen, ervlen, pct_pos;
static bool smart_term;
static bool newtitle = false;
static charMatrix title;
int j;
#endif
static char *term;
static bool init;
double pct;
int i;
octave_value_li st retval;
retval(0) = Matrix(0,0);
int nargin = args.length();
if (nargin < 1) {
print_usage ();
return retval;
}
if(no_terminal)
return retval;
pct = args(0).double_ value();
if(pct>1.0) pct = 1.0; // to prevent overflow
#if defined(USE_TER M)
if(nargin==2 && args(1).is_stri ng())
{
newtitle = true;
title = args(1).string_ value();
}
if(nargin==3)
{
newtitle = true;
title = args(2).string_ value();
}
#endif
if(pct==0.0 || pct==1.0)
{
init = true;
term = getenv("TERM");
if(!term)
{
no_terminal = true;
return retval;
}
#if defined (USE_TERM)
i = tgetnum("co");
smart_term = i ? true : false;
if(nargin==1 || args(1).is_stri ng())
length = smart_term ? i-1 : DEFAULT_LEN;
#else
if(nargin==1)
length = DEFAULT_LEN;
#endif
else
if(nargin==2 && !(args(1).is_st ring()))
{
length = args(1).int_val ue();
if(length>MAX_L EN) length = MAX_LEN;
if(length<=0) length = DEFAULT_LEN;
}
#if defined (USE_TERM)
pct_pos = length/2-2;
if(smart_term)
{
// get terminal strings ("rv"="rever se video")
char* buf_ptr = term_buffer;
begin_rv = tgetstr("so", &buf_ptr);
end_rv = tgetstr("se", &buf_ptr);
brvlen = 0; buf_ptr = begin_rv;
while(buf_ptr[++brvlen]);
ervlen = 0; buf_ptr = end_rv;
while(buf_ptr[++ervlen]);
// initialize print buffer
for(i=0; i<BUF_SIZE; ++i)
print_buf[i] = ' ';
print_buf[length+brvlen+e rvlen+1] = '\r';
print_buf[length+brvlen+e rvlen+2] = '\0';
for(i=0; i<brvlen; ++i)
print_buf[i] = begin_rv[i];
for(i=0; i<ervlen; ++i)
print_buf[i+brvlen] = end_rv[i];
fputs(print_buf ,stdout);
if(title.length ())
newtitle = true;
}
else
{
#endif
for(i=0; i<BUF_SIZE; ++i)
print_buf[i] = ' ';
print_buf[length+8] = '\r';
print_buf[length+9] = '\0';
fputs(print_buf ,stdout);
print_buf[0] = '[';
print_buf[length+1] = ']';
#if defined (USE_TERM)
}
#endif
n_chars_old = 0;
fflush(stdout);
return retval;
}
else
{
// calculate position
int n_chars=(int)(p ct*length+0.5);
int pct_int=(int)(p ct*100.0+0.5);
// check to see if we got this far without initialization
if(init==false)
{
Fwaitbar(octave _value(0.0),0);
fputs(print_buf ,stdout);
fflush(stdout);
}
// check to see of output needs to be updated
#if !defined (USE_TERM)
if(n_chars!=n_c hars_old || pct_int!=pct_in t_old)
{
#else
if(n_chars!=n_c hars_old || pct_int!=pct_in t_old || newtitle)
{
if(smart_term)
{
static char pct_str[5];
sprintf(pct_str ,"%3i%%",pct_in t);
// Insert the title
if(newtitle)
{
pct_pos = length-SPACING*2;
for(i=SPACING+b rvlen; i<pct_pos+brvle n-SPACING; ++i)
print_buf[ i>=n_chars_old+ brvlen ? i+ervlen : i ] = ' ';
for(i=SPACING+b rvlen, j=0; j<title.length( ); ++i, ++j)
if(i<pct_pos+br vlen-SPACING)
print_buf[ i>=n_chars_old ? i+ervlen : i ] = title(0,j);
newtitle = false;
}
// Insert the percentage string
for(i=pct_pos+b rvlen, j=0; j<4; ++i, ++j)
print_buf[ i>=n_chars_old+ brvlen ? i+ervlen : i ] = pct_str[j];
// Move print_buf characters
if(n_chars_old< n_chars)
for(i=n_chars_o ld+brvlen; i<n_chars+brvle n; ++i)
print_buf[i] = print_buf[i+ervlen];
else
for(i=n_chars_o ld+brvlen-1; i>=n_chars+brvl en; --i)
print_buf[i+ervlen] = print_buf[i];
// Insert end of reverse video
for(i=n_chars+b rvlen, j=0; j<ervlen; ++i, ++j)
print_buf[i] = end_rv[j];
}
else
{
#endif
if(n_chars>=n_c hars_old)
for(int i=n_chars_old+1 ; i<=n_chars; ++i)
print_buf[i] = BAR_CHAR;
else
for(int i=n_chars+1; i<=n_chars_old ; ++i)
print_buf[i] = ' ';
sprintf(&(print _buf[length+3])," %3i%%\r",pct_in t);
#if defined (USE_TERM)
}
#endif
fputs(print_buf ,stdout);
fflush(stdout);
n_chars_old = n_chars;
pct_int_old = pct_int;
}
}
return retval;
}[/code]
Comment