diff sqlite_to_tabular.py @ 20:ab27c4bd14b9 draft

Uploaded

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sqlite_to_tabular.py	Fri Jul 14 11:39:27 2017 -0400
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import optparse
+import os.path
+import sys
+
+from query_db import describe_tables, get_connection, run_query
+
+
+def __main__():
+    # Parse Command Line
+    parser = optparse.OptionParser()
+    parser.add_option('-s', '--sqlitedb', dest='sqlitedb', default=None,
+                      help='The SQLite Database')
+    parser.add_option('-q', '--query', dest='query', default=None,
+                      help='SQL query')
+    parser.add_option('-Q', '--query_file', dest='query_file', default=None,
+                      help='SQL query file')
+    parser.add_option('-n', '--no_header', dest='no_header', default=False,
+                      action='store_true',
+                      help='Include a column headers line')
+    parser.add_option('-o', '--output', dest='output', default=None,
+                      help='Output file for query results')
+    (options, args) = parser.parse_args()
+
+    # determine output destination
+    if options.output is not None:
+        try:
+            outputPath = os.path.abspath(options.output)
+            outputFile = open(outputPath, 'w')
+        except Exception as e:
+            print("failed: %s" % e, file=sys.stderr)
+            exit(3)
+    else:
+        outputFile = sys.stdout
+
+    query = None
+    if (options.query_file is not None):
+        with open(options.query_file, 'r') as fh:
+            query = ''
+            for line in fh:
+                query += line
+    elif (options.query is not None):
+        query = options.query
+
+    if (query is None):
+        try:
+            describe_tables(get_connection(options.sqlitedb), outputFile)
+        except Exception as exc:
+            print("Error: %s" % exc, file=sys.stderr)
+        exit(0)
+    else:
+        try:
+            run_query(get_connection(options.sqlitedb), query, outputFile,
+                      no_header=options.no_header)
+        except Exception as exc:
+            print("Error: %s" % exc, file=sys.stderr)
+            exit(1)
+
+
+if __name__ == "__main__":
+    __main__()