From 235a7ecd7f6d26b0a05ea36f124aa27b5a068b1c Mon Sep 17 00:00:00 2001
From: archanpatkar <pat@archanpatkar.com>
Date: Mon, 1 Jul 2019 20:39:22 +0530
Subject: [PATCH] Restructured termcolor to term module

---
 examples/terminal_control.v       |  30 ++++++++
 vlib/log/log.v                    |  12 ++--
 vlib/{termcolor => term}/colors.v |   4 +-
 vlib/term/control.v               | 110 ++++++++++++++++++++++++++++++
 4 files changed, 148 insertions(+), 8 deletions(-)
 create mode 100644 examples/terminal_control.v
 rename vlib/{termcolor => term}/colors.v (99%)
 create mode 100644 vlib/term/control.v

diff --git a/examples/terminal_control.v b/examples/terminal_control.v
new file mode 100644
index 0000000000..43e185f745
--- /dev/null
+++ b/examples/terminal_control.v
@@ -0,0 +1,30 @@
+import term
+
+fn main() {
+	term.erase_clear()
+	sleeping_line(5,5,5,'*')
+	standing_line(5,5,5,'*')
+	sleeping_line(5,10,5,'*')
+	standing_line(9,5,5,'*')
+	term.cursor_down(5)
+	print('\n')
+	println(term.bold(term.red('It Worked!')))
+}
+
+fn sleeping_line(x,y,size int, ch string) {
+	mut i := 0
+	for i < size {
+		term.set_cursor_position(x+i,y)
+		print(term.bold(term.yellow(ch)))
+		i++
+	}
+}
+
+fn standing_line(x,y,size int, ch string) {
+	mut i := 0
+	for i < size {
+		term.set_cursor_position(x,y+i)
+		print(term.bold(term.yellow(ch)))
+		i++
+	}
+}
\ No newline at end of file
diff --git a/vlib/log/log.v b/vlib/log/log.v
index 5858ca8597..f808821e4d 100644
--- a/vlib/log/log.v
+++ b/vlib/log/log.v
@@ -1,6 +1,6 @@
 module log
 
-import termcolor
+import term
 
 const (
     FATAL = 1
@@ -26,28 +26,28 @@ pub fn (l Log) fatal(s string){
 
 pub fn (l Log) error(s string){
     if l.level >= ERROR{
-        f := termcolor.red('E')
+        f := term.red('E')
         println('[$f]$s')
     }
 }
 
 pub fn (l Log) warn(s string){
     if l.level >= WARN{
-        f := termcolor.yellow('W')
+        f := term.yellow('W')
         println('[$f]$s')
     }
 }
 
 pub fn (l Log) info(s string){
     if l.level >= INFO{
-        f := termcolor.white('I')
+        f := term.white('I')
         println('[$f]$s')
     }
 }
 
 pub fn (l Log) debug(s string){
     if l.level >= DEBUG{
-        f := termcolor.blue('D')
+        f := term.blue('D')
         println('[$f]$s')
     }
-}
+}
\ No newline at end of file
diff --git a/vlib/termcolor/colors.v b/vlib/term/colors.v
similarity index 99%
rename from vlib/termcolor/colors.v
rename to vlib/term/colors.v
index e87e4da64c..790073990f 100644
--- a/vlib/termcolor/colors.v
+++ b/vlib/term/colors.v
@@ -2,7 +2,7 @@
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
 
-module termcolor
+module term
 
 pub fn format(msg, open, close string) string {
     return '\x1b[' + open + 'm' + msg + '\x1b[' + close + 'm'
@@ -106,4 +106,4 @@ pub fn white(msg string) string {
 
 pub fn yellow(msg string) string {
     return format(msg, '33', '39')
-}
+}
\ No newline at end of file
diff --git a/vlib/term/control.v b/vlib/term/control.v
new file mode 100644
index 0000000000..a8ddfe8c48
--- /dev/null
+++ b/vlib/term/control.v
@@ -0,0 +1,110 @@
+// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+module term
+
+// Sources for ANSI Control Sequences
+// https://github.com/RajeshPatkarInstitute/Panim
+// https://www.gnu.org/software/screen/manual/html_node/Control-Sequences.html
+// https://en.wikipedia.org/wiki/ANSI_escape_code
+
+// Support for Windows
+// https://en.wikipedia.org/wiki/ANSI.SYS
+// #include <windows.h>
+// C.SetConsoleMode(ENABLE_VIRTUAL_TERMINAL_INPUT)
+
+// Setting cursor to the given position
+// x is the x coordinate
+// y is the y coordinate
+pub fn set_cursor_position(x int,y int) {
+    print('\x1b[$y;$x;H')
+}
+
+// n is number of cells
+// direction: A is up / North
+// direction: B is down / South
+// direction: C is forward / East
+// direction: D is backward / West
+pub fn move(n int,direction string) string {
+    return '\x1b[$n$direction'
+}
+
+pub fn cursor_up(n int) {
+    print(move(n,'A'))
+}
+
+pub fn cursor_down(n int) {
+    print(move(n,'B'))
+}
+
+pub fn cursor_forward(n int) {
+    print(move(n,'C'))
+}
+
+pub fn cursor_back(n int) {
+    print(move(n,'D'))
+}
+
+// type: 0 -> current cursor postion to end of the screen
+// type: 1 -> current cursor postion to beginning of the screen
+// type: 2 -> clears entire screen
+// type: 3 -> clears entire screen and also delete scrollback buffer
+pub fn erase_display(t string) {
+    print('\x1b[' + t + 'J')
+}
+
+pub fn erase_toend()
+{
+    erase_display('0')
+}
+
+pub fn erase_tobeg()
+{
+    erase_display('1')
+}
+
+pub fn erase_clear()
+{
+    erase_display('2')
+}
+
+pub fn erase_del_clear()
+{
+    erase_display('3')
+}
+
+// type: 0 -> current cursor postion to end of the line
+// type: 1 -> current cursor postion to beginning of the line
+// type: 2 -> clears entire line
+// Note: Cursor position does not change
+pub fn erase_line(t string) {
+    print('\x1b[' + t + 'K')
+}
+
+pub fn erase_line_toend()
+{
+    erase_line('0')
+}
+
+pub fn erase_line_tobeg()
+{
+    erase_line('1')
+}
+
+pub fn erase_line_clear()
+{
+    erase_line('2')
+}
+
+// Will make cursor appear if not visible
+pub fn show_cursor()
+{
+	print('\x1b[?25h')
+}
+
+// Will make cursor invisible
+pub fn hide_cursor()
+{
+	print('\x1b[?25l')
+}
\ No newline at end of file