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progress.c: Merge in latest changes from troglobit/toolbox@d845e67

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2015-08-24 23:52:26 +02:00
parent 5ae5bfb767
commit 039a92b292
1 changed files with 95 additions and 22 deletions
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progress.c
+95 -22
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@@ -1,6 +1,6 @@
/* Very simple termios based progress bar
/* Simple termios based progress bar
*
* Copyright (c) 2012, 2013 Joachim Nilsson <troglobit@gmail.com>
* Copyright (c) 2012-2015 Joachim Nilsson <troglobit@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -17,31 +17,58 @@
#include <limits.h> /* INT_MAX */
#include <stdio.h>
#include <string.h>
#include "conio.h"
static char spinner(void)
{
static int i = INT_MAX;
char *states = "|/-\\";
// char *states = ".oOo";
// char *states = ".oO°Oo.";
// char *states = "v<^>";
// char *states = ".oO@*";
#define SPINNER_THROB ".oOo"
#define SPINNER_PULSAR ".oO°Oo."
#define SPINNER_ARROW "v<^>"
#define SPINNER_STAR ".oO@*"
#define SPINNER_DEFAULT "|/-\\"
/* Subtract to get clockwise spinning. */
return states[i-- % 4]; /* % Number of states */
static char spinner(char *style)
{
size_t num;
static unsigned int i = 0;
if (!style)
style = SPINNER_DEFAULT;
num = strlen(style);
return style[i++ % num]; /* % Number of states in style */
}
/**
* progress - Advanced ASCII progress bar with spinner
* @percent: Start first call with this set to 0, end with 100
* @max_width: Max width of progress bar, in total characters.
*
* This function draws an advanced ASCII progressbar at the current
* line. It always start from the first column.
*
* The progress bar will hide the cursor if started with @percent 0 and
* show it again at the end, when called with @percent 100.
*
* While being called with the same percentage the spinner will spin,
* to show the user the process hasn't frozen.
*
* If the output TTY cannot interpret control characters, like \r, it is
* advised to instead used the progress_simple() function.
*/
void progress(int percent, int max_width)
{
int i, bar = percent * max_width / 100;
int i, bar;
/* Adjust for progress bar overhead */
max_width -= 10;
if (0 == percent)
hidecursor();
fprintf(stderr, "\r%3d%% %c [", percent, spinner());
fprintf(stderr, "\r%3d%% %c [", percent, spinner(NULL));
bar = percent * max_width / 100;
for (i = 0; i < max_width; i++) {
if (i > bar)
fputc(' ', stderr);
@@ -58,6 +85,35 @@ void progress(int percent, int max_width)
}
}
void progress_simple(int percent)
{
static int last = 1;
int ratio, numout;
if (!percent && last) {
last = 0;
fputs("0% 25% 50% 75% 100%\n"
"|---------+---------+---------+---------|\n"
"|", stderr);
return;
}
ratio = 40 * percent / 100;
numout = ratio - last;
if (ratio <= last)
return;
last = ratio;
while (numout--) {
if (ratio != 40 || numout)
putc('=', stderr);
else
putc('|', stderr);
}
}
#ifdef UNITTEST
#include <stdlib.h> /* atexit() */
#include <unistd.h> /* usleep() */
@@ -70,23 +126,40 @@ static void bye(void)
showcursor();
}
int main(void)
static void testit(int fn, int percent)
{
if (fn)
progress(percent, MAX_WIDTH);
else
progress_simple(percent);
}
static void test(int fn)
{
int i, percent, block = 0, num = 85;
atexit(bye);
hidecursor();
while (block < num) {
percent = block * 100 / num;
for (i = 0; i < 10; i++) {
progress(percent, MAX_WIDTH);
msleep(2);
testit(fn, percent);
msleep(5);
}
block++;
msleep(50);
msleep(10);
}
progress(100, MAX_WIDTH);
testit(fn, 100);
}
int main(void)
{
atexit(bye);
hidecursor();
printf("\nAdvanced:\n");
test(1);
printf("\nSimple:\n");
test(0);
printf("\n");
return 0;
}