From 1638f9b0f12056206faabdbca32c576d92824039 Mon Sep 17 00:00:00 2001
From: "S.J.R. van Schaik" <stephan@whiteboxsystems.nl>
Date: Tue, 3 Oct 2017 16:40:23 +0200
Subject: [PATCH] shell: implement draw_progress() as a convenience function

---
 include/shell/progress.h |  3 +++
 source/shell/Makefile    |  1 +
 source/shell/progress.c  | 22 ++++++++++++++++++++++
 3 files changed, 26 insertions(+)
 create mode 100644 include/shell/progress.h
 create mode 100644 source/shell/progress.c

diff --git a/include/shell/progress.h b/include/shell/progress.h
new file mode 100644
index 0000000..c5b93df
--- /dev/null
+++ b/include/shell/progress.h
@@ -0,0 +1,3 @@
+#pragma once
+
+void draw_progress(FILE *fp, unsigned long pos, unsigned max);
diff --git a/source/shell/Makefile b/source/shell/Makefile
index 897d1a3..43f54d0 100644
--- a/source/shell/Makefile
+++ b/source/shell/Makefile
@@ -5,5 +5,6 @@ obj-y += source/shell/echo.o
 obj-y += source/shell/flash.o
 obj-y += source/shell/ftl.o
 obj-y += source/shell/mufs.o
+obj-y += source/shell/progress.o
 obj-y += source/shell/rtc.o
 obj-y += source/shell/version.o
diff --git a/source/shell/progress.c b/source/shell/progress.c
new file mode 100644
index 0000000..145dbc3
--- /dev/null
+++ b/source/shell/progress.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+#define TERM_WIDTH 80
+
+void draw_progress(FILE *fp, unsigned long pos, unsigned long max)
+{
+	unsigned long head = (TERM_WIDTH - 2) * pos / max;
+	unsigned long i;
+
+	fputc('[', fp);
+
+	for (i = 0; i <= head; ++i)
+		fputc('#', fp);
+
+	for (; i < (TERM_WIDTH - 2); ++i)
+		fputc(' ', fp);
+
+	fputc(']', fp);
+
+	for (i = 0; i < TERM_WIDTH; ++i)
+		fputc('\b', fp);
+}