mdb-astextplain: выравниваем колонки по горизонтали

bin/csv-pprint

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""pretty-print a csv input, aligning columns"""
+
+import sys
+
+SEP = '|'       # XXX '|' separator hardcoded
+ENC = 'utf-8'   # XXX utf-8 encoding hardcoded
+
+def main():
+    rows = []
+    maxw = []
+
+    # scan input, prettify fields, collect max coloumns width
+    for line in sys.stdin.readlines():
+        line   = line.rstrip()      # strip trailing '\n'
+        line   = line.decode(ENC)   # utf-8 -> unicode
+        fields = line.split(SEP)
+
+        # numbers are pretty-printed
+        for i, f in enumerate(fields):
+            try:
+                fields[i] = int(f)
+                continue
+            except ValueError:
+                pass
+
+            try:
+                fields[i] = float(f)
+            except ValueError:
+                pass
+
+
+        if len(fields) > len(maxw):
+            maxw.extend( [0] * (len(fields) - len(maxw)) )
+
+        for i, f in enumerate(fields):
+            if len(unicode(f)) > maxw[i]:
+                maxw[i] = len(unicode(f))
+
+        rows.append(fields)
+
+    # re-output rows, aligning them
+    for fields in rows:
+        line = ''
+        for f, w in zip(fields, maxw):
+            # numbers are right-aligned, everything else - left
+            if isinstance(f, (int,long,float)):
+                fstr = ('%%%is'  % w) % f
+            else:
+                fstr = ('%%-%is' % w) % f
+
+
+            line = SEP.join((line,fstr))
+
+        # strip traling empty field, if any
+        line = line.rstrip()
+        print line.encode(ENC)
+
+
+
+if __name__ == '__main__':
+    main()

bin/mdb-astextplain

@@ -12,11 +12,14 @@ while read ; do
     tab="$REPLY"
     mdb-schema -T "$tab"  "$mdbfile" | grep -v '^--'
     echo "----8<----"
+    (
      # header
      mdb-export -Q -d '|' "$mdbfile" "$tab"  | \
         head -1
      # content sorted by first column
      mdb-export -Q -d '|' -H "$mdbfile" "$tab"   | \
         sort -t '|' -g
+    ) |
+    csv-pprint
     echo "----8<----"
 done < $tabfile