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/* $Header: /home/ksheff/src/e2tools/RCS/progress.c,v 0.1 2002/06/26 11:17:28 ksheff Exp $ */
/*
* progress.c
*
* Copyright (C) 2002 Keith W Sheffield. This file may be redistributed
* under the terms of the GNU Public License.
*
*/
#ifndef PROGRESS_C
#define PROGRESS_C
#endif
/* Description */
/*
*
*
*/
/*
* $Log: progress.c,v $
* Revision 0.1 2002/06/26 11:17:28 ksheff
* Initial revision
*
*/
/* Feature Test Switches */
/* System Headers */
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/time.h>
/* Macros */
#define PROG_FILE_SIZE 50
#define PROG_CLEAR \
" \r"
/* Local Variables */
static char prog_file[PROG_FILE_SIZE+1];
static struct stat *prog_sbuf = NULL;
static long prog_start;
static long prog_time;
/* Name: init_progress()
*
* Description:
*
* This function initializes the progress status variables for a particular
* file operation
* .
*
* Algorithm:
*
* Determine the size of the file name
* Copy the last PROG_FILE_SIZE characters of the filename
* Copy the pointer to the file statistics structure
*
* Global Variables:
*
* char prog_file[PROG_FILE_SIZE+1]; The file being operated on
* struct stat *prog_sbuf; prog_file's information
* long prog_start; The initial start time
* long prog_time; The last update time
*
* Arguments:
*
* char *file; The file to watch
* struct stat *sbuf; The file's information
*
* Return Values:
*
* None
*
* Author: Keith W. Sheffield
* Date: 06/26/2002
*
* Modification History:
*
* MM/DD/YY Name Description
*
*/
void init_progress(char *file, struct stat *sbuf)
{
int len;
struct timeval tv;
if (file != NULL && sbuf != NULL)
{
if (strcmp(file, "-") == 0)
file = "<stdin>";
len = strlen(file);
if (len > PROG_FILE_SIZE)
{
file += (len - PROG_FILE_SIZE);
len = PROG_FILE_SIZE;
}
memset(prog_file, ' ', PROG_FILE_SIZE);
memcpy(prog_file, file, len);
prog_file[PROG_FILE_SIZE] = '\0';
prog_sbuf = sbuf;
gettimeofday(&tv, NULL);
prog_start = prog_time = tv.tv_sec;
}
else
{
prog_file[0] = '\0';
prog_sbuf = NULL;
prog_start = prog_time = 0;
}
} /* end of init_progress */
/* Name: update_progress()
*
* Description:
*
* This function updates the current file progress display.
*
* Algorithm:
*
* Get the system time in seconds.
* If different from the last update
* Save the system time
* Display the file name, current byte total, and total file size
*
* Global Variables:
*
* char prog_file[PROG_FILE_SIZE+1]; The file being operated on
* struct stat *prog_sbuf; prog_file's information
* long prog_time; The last update time
*
* Arguments:
*
* unsigned long num_bytes; The number of bytes transferred
*
* Return Values:
*
* None
*
* Author: Keith W. Sheffield
* Date: 06/26/2002
*
* Modification History:
*
* MM/DD/YY Name Description
*
*/
void update_progress(unsigned long num_bytes)
{
struct timeval tv;
gettimeofday(&tv, NULL);
if (prog_sbuf != NULL && prog_time != tv.tv_sec)
{
prog_time = tv.tv_sec;
fprintf(stderr, "%s %10d / %10d\r", prog_file, num_bytes,
prog_sbuf->st_size);
fflush(stderr);
}
} /* end of update_progress */
/* Name: finish_progress()
*
* Description:
*
* This function clears the current progress line if needed.
*
* Algorithm:
*
* Check to see if prog_start is different than prog_time
* Clear the progress line
*
* Global Variables:
*
*
* Arguments:
*
* None
*
* Return Values:
*
* None
*
* Author: Keith W. Sheffield
* Date: 06/26/2002
*
* Modification History:
*
* MM/DD/YY Name Description
*
*/
void finish_progress()
{
if (prog_start != prog_time)
fputs(PROG_CLEAR, stderr);
} /* end of finish_progress */
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