lib: introduce console module to hold terminal related features

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>

diff --git a/lib/console.nit b/lib/console.nit
new file mode 100644 (file)
index 0000000..e6a129f
--- /dev/null
+++ b/lib/console.nit
@@ -0,0 +1,36 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Simple numerical statistical analysis and presentation
+module console
+
+# Redef String class to add a function to color the string
+redef class String
+       private fun add_escape_char(escapechar: String): String do
+               return "{escapechar}{self}{esc}[0m"
+       end
+
+       private fun esc: Char do return 27.ascii
+       fun gray: String do return add_escape_char("{esc}[30m")
+       fun red: String do return add_escape_char("{esc}[31m")
+       fun green: String do return add_escape_char("{esc}[32m")
+       fun yellow: String do return add_escape_char("{esc}[33m")
+       fun blue: String do return add_escape_char("{esc}[34m")
+       fun purple: String do return add_escape_char("{esc}[35m")
+       fun cyan: String do return add_escape_char("{esc}[36m")
+       fun light_gray: String do return add_escape_char("{esc}[37m")
+       fun bold: String do return add_escape_char("{esc}[1m")
+       fun underline: String do return add_escape_char("{esc}[4m")
+end
+