HW12/display_bar.h

#include<stdio.h>
#include<time.h>
#include<stdbool.h>
#include<stdarg.h>

#ifndef _DISPLAY_BAR_H_
#define _DISPLAY_BAR_H_

//declare for raw operation
typedef unsigned raw_progress_bar_t;

void lock_scrolled();
void unlock_scrolled();
void add_scrolled_unlocked(unsigned int i);
raw_progress_bar_t create_raw_progress_bar();
void RawDisplayProgressBar(raw_progress_bar_t bar,size_t offset,size_t total,const char * filename);

//you should call before using progrees bar.
void ready_progress_bar();
//quit progress bar system.
void quit_progress_bar();
//same as isatty
bool isatty_file(FILE * file);

//After calling ready_progress_bar, you must use following functions on print.
void myd_perror(const char * msg);
/*argument `line` is number of newline created by argument `msg`.
* thread-safe
*/
int myd_vfprintf(int line,FILE * f,const char * msg,va_list arg);
/*argument `line` is number of newline created by argument `msg`.
* thread-safe
*/
int myd_fprintf(int line,FILE * f,const char * msg, ...);


typedef struct {
    raw_progress_bar_t bar;
    //millisecond unit
    int update_rate;
    struct timespec last_update;
} progress_bar_t;
//update rate is millsecond unit
void init_progress_bar(progress_bar_t * bar,int update_rate);
/// display progress bar
/// if `sync`, update unconditionally.
void DisplayProgressBar(progress_bar_t * bar,size_t offset,size_t total,const char * filename, bool sync);

#endif