simple implementation of cut, so there is not dependency on GNU's cut

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/extract/cut b/src/extract/cut
new file mode 100755
index 0000000..fa6cb99
--- /dev/null
+++ b/src/extract/cut
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# -*- mode: python, encoding: utf-8 -*-
+
+# libgamma -- Display server abstraction layer for gamma ramp adjustments
+# Copyright (C) 2014  Mattias Andrée (maandree@member.fsf.org)
+# 
+# This library 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 3 of the License, or
+# (at your option) any later version.
+# 
+# This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+
+# Very limited GNU cut.
+
+
+import sys
+
+
+delimiter = '\t'
+fields = []
+complement = False
+
+
+i, n = 1, len(sys.argv)
+while i < n:
+    arg = sys.argv[i]
+    if arg == '-d':
+        i += 1
+        delimiter = sys.argv[i]
+    elif arg == '-f':
+        i += 1
+        fields += [int(f) for f in sys.argv[i].split(',')]
+    elif arg == '--complement':
+        complement = True
+    i += 1
+
+
+fields = set(fields)
+
+
+def modify(line):
+    line = line.split(delimiter)
+    if not complement:
+        line = [line[i] for i in range(len(line)) if i not in fields]
+    else:
+        line = [line[i] for i in range(len(line)) if i in fields]
+    return delimiter.join(line)
+
+
+data = sys.stdin.read()
+data = '\n'.join(modify(line) for line in data.split('\n'))
+sys.stdout.write(data)
+sys.stdout.flush()
+