Project

General

Profile

1
#!/usr/bin/env python
2
# Converts a map spreadsheet to human-readable (but machine unusable) form
3
# Usage: self <in_map >out_ma
4

    
5
import csv
6
import re
7
import sys
8

    
9
def sub_nested(regex, repl, str_):
10
    while True:
11
        str_, n = re.subn(regex, repl, str_)
12
        if n == 0: return str_
13

    
14
def cleanup(xpath):
15
    truncated = False
16
    
17
    # Remove attrs
18
    xpath = sub_nested(r':\[[^\[\]]*?\]', r'', xpath)
19
    
20
    # Remove lookahead assertions
21
    xpath = sub_nested(r'\((/[^\)]*?)\)(?=/)', r'\1', xpath)
22
    
23
    # Remove pointers
24
    xpath, n = re.subn(r'^.*->', r'', xpath)
25
    if n > 0: truncated = True
26
    
27
    # Remove part of path before first key list, XML function, or path end
28
    # Leave enough to include the table of a user-defined value
29
    xpath, n = re.subn(r'^(?:/(?!_)[\w*]+)*(?=(?:/(?!_)[\w*]+){2}(?:\[|/_|$))',
30
        r'', xpath)
31
    # Prepend / to show truncation
32
    if n > 0: truncated = True
33
    
34
    # Remove backward (child-to-parent) pointer's target ID attr
35
    xpath = re.sub(r'\[[\w*]+\]|(?<=\[)[\w*]+,', r'', xpath)
36
    
37
    # Remove negative keys
38
    xpath = re.sub(r',?!(?:[\w*]+/)*@?[\w*]+', r'', xpath)
39
    
40
    # Remove path before key
41
    xpath = re.sub(r'(?:[\w*]+/)*(@?[\w*]+)(?==)', r'\1', xpath)
42
    
43
    # Prepend / to show truncation
44
    if truncated: xpath = '/'+xpath
45
    
46
    return xpath
47

    
48
def main():
49
    # Convert map
50
    reader = csv.reader(sys.stdin)
51
    writer = csv.writer(sys.stdout)
52
    writer.writerow(reader.next())
53
    for row in reader:
54
        for i in xrange(2): row[i] = cleanup(row[i])
55
        writer.writerow(row)
56

    
57
main()
(13-13/17)