1 files changed, 86 insertions, 0 deletions
diff --git a/tools/patman/terminal.py b/tools/patman/terminal.py
new file mode 100644
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+++ b/tools/patman/terminal.py
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+# Copyright (c) 2011 The Chromium OS Authors.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+"""Terminal utilities
+
+This module handles terminal interaction including ANSI color codes.
+"""
+
+class Color(object):
+  """Conditionally wraps text in ANSI color escape sequences."""
+  BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
+  BOLD = -1
+  COLOR_START = '\033[1;%dm'
+  BOLD_START = '\033[1m'
+  RESET = '\033[0m'
+
+  def __init__(self, enabled=True):
+    """Create a new Color object, optionally disabling color output.
+
+    Args:
+      enabled: True if color output should be enabled. If False then this
+        class will not add color codes at all.
+    """
+    self._enabled = enabled
+
+  def Start(self, color):
+    """Returns a start color code.
+
+    Args:
+      color: Color to use, .e.g BLACK, RED, etc.
+
+    Returns:
+      If color is enabled, returns an ANSI sequence to start the given color,
+      otherwise returns empty string
+    """
+    if self._enabled:
+      return self.COLOR_START % (color + 30)
+    return ''
+
+  def Stop(self):
+    """Retruns a stop color code.
+
+    Returns:
+      If color is enabled, returns an ANSI color reset sequence, otherwise
+      returns empty string
+    """
+    if self._enabled:
+      return self.RESET
+    return ''
+
+  def Color(self, color, text):
+    """Returns text with conditionally added color escape sequences.
+
+    Keyword arguments:
+      color: Text color -- one of the color constants defined in this class.
+      text: The text to color.
+
+    Returns:
+      If self._enabled is False, returns the original text. If it's True,
+      returns text with color escape sequences based on the value of color.
+    """
+    if not self._enabled:
+      return text
+    if color == self.BOLD:
+      start = self.BOLD_START
+    else:
+      start = self.COLOR_START % (color + 30)
+    return start + text + self.RESET