1 files changed, 125 insertions, 0 deletions
diff --git a/tabletext.py b/tabletext.py
new file mode 100644
index 0000000..049fcf7
--- /dev/null
+++ b/tabletext.py
@@ -0,0 +1,125 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+import re
+from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
+import sys
+from codecs import open
+from itertools import izip_longest
+
+
+def get_widths(table, formats, padding):
+    columns = izip_longest(*table, fillvalue="")
+    return [max(len(format_entry(entry, format_string, padding))
+                for entry in column)
+            for column, format_string in zip(columns, formats)]
+
+
+def add_widths(formats, widths, padding):
+    return [add_width(format_string, width - sum(padding))
+            for format_string, width in zip(formats, widths)]
+
+
+def top_rule(widths, corners, hor):
+    return (corners[0] + corners[1].join(hor * width for width in widths)
+            + corners[2])
+
+
+def inner_rule(widths, corners, hor):
+    return (corners[3] + corners[4].join(hor * width for width in widths)
+            + corners[5]) + "\n"
+
+
+def bottom_rule(widths, corners, hor):
+    return (corners[6] + corners[7].join(hor * width for width in widths)
+            + corners[8])
+
+
+def format_entry(entry, format_string, padding):
+    format_string = "{0:" + format_string + "}"
+    return " " * padding[0] + format_string.format(entry) + " " * padding[1]
+
+
+def format_row(row, formats, padding, ver):
+    return (ver + ver.join(format_entry(entry, format_string, padding)
+                           for entry, format_string in zip(row, formats))
+            + ver) + "\n"
+
+
+def add_width(format_string, width):
+    regexp = r",?(\.\d+)?(b|c|d|e|E|f|F|g|G|n|o|s|x|X|%)?"
+    match = re.match(regexp, format_string)
+    begin, end = match.span()
+    if end - begin > 0:
+        return format_string[:begin] + str(width) + format_string[begin:]
+    else:
+        return format_string + str(width)
+
+
+def print_table(table, formats=None, padding=(1, 1), corners="┌┬┐├┼┤└┴┘",
+                header_corners="╒╤╕╞╪╡", header_hor="═", header_ver="│",
+                header=False, hor="─", ver="│"):
+    if not formats:
+        formats = [""] * len(table[-1])
+    elif type(formats) is str:
+        formats = formats * len(table[-1])
+    if len(corners) == 1:
+        corners = corners * 9
+    widths = get_widths(table, formats, padding)
+    formats = add_widths(formats, widths, padding)
+    if header:
+        print top_rule(widths, header_corners, header_hor)
+        print format_row(table[0], formats, padding, header_ver),
+        print inner_rule(widths, header_corners, header_hor),
+        table = table[1:]
+    else:
+        print top_rule(widths, corners, hor)
+    print inner_rule(widths, corners, hor).join(format_row(row, formats,
+                                                           padding, ver)
+                                                for row in table),
+    print bottom_rule(widths, corners, hor)
+
+
+def main():
+    parser = ArgumentParser(formatter_class=ArgumentDefaultsHelpFormatter,
+                            description="Render tab separated data as \
+                            a table.")
+    parser.add_argument("--hor", help="horizontal line character",
+                        metavar="CHAR", default="─")
+    parser.add_argument("--ver", help="vertical line character",
+                        metavar="CHAR", default="│")
+    parser.add_argument("--corners", help="corner characters", metavar="CHARS",
+                        default="┌┬┐├┼┤└┴┘")
+    parser.add_argument("--padding", help="left and right horizontal padding \
+                        lenghts", nargs=2, type=int, metavar="<n>",
+                        default=[1, 1])
+    parser.add_argument("--format", help="format string for the table entries",
+                        default="", dest="formats", metavar="FORMAT")
+    parser.add_argument("--header", help="format first row as header",
+                        action="store_true")
+    parser.add_argument("--hhor", help="horizontal line character \
+                        for the header row", metavar="CHAR", dest="header_hor",
+                        default="═")
+    parser.add_argument("--hver", help="vertical line character \
+                        for the header row", metavar="CHAR", dest="header_ver",
+                        default="│")
+    parser.add_argument("--hcorners", help="corner characters for \
+                        the header row", metavar="CHARS",
+                        dest="header_corners", default="╒╤╕╞╪╡")
+    parser.add_argument("file", help="file to render or - to read from STDIN",
+                        nargs="?", default="-", metavar="FILE")
+    parser.add_argument("--version", "-v", action="version",
+                        version="%(prog)s 0.1")
+    args = parser.parse_args()
+
+    if args.file == "-":
+        args.file = sys.stdin
+    else:
+        args.file = open(args.file, encoding="utf-8")
+
+    table = [line.strip().split("\t") for line in args.file.readlines()]
+    args = vars(args)
+    del args["file"]
+    print_table(table, **args)
+
+if __name__ == "__main__":
+    main()