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| 1 | +#! /usr/bin/env python |
| 2 | + |
| 3 | +"""Consolidate a bunch of CVS or RCS logs read from stdin. |
| 4 | +
|
| 5 | +Input should be the output of a CVS or RCS logging command, e.g. |
| 6 | +
|
| 7 | + cvs log -rrelease14 |
| 8 | +
|
| 9 | +which dumps all log messages from release1.4 upwards (assuming that |
| 10 | +release 1.4 was tagged with tag 'release14'). |
| 11 | +
|
| 12 | +This collects all the revision records and outputs them sorted by date |
| 13 | +rather than by file, collapsing duplicate revision record, i.e., |
| 14 | +records with the same message for different files. |
| 15 | +
|
| 16 | +The -t option causes it to truncate (discard) the last revision log |
| 17 | +entry; this is useful when using something like the above cvs log |
| 18 | +command, which shows the revisions including the given tag, while you |
| 19 | +probably want everything *since* that tag. |
| 20 | +
|
| 21 | +XXX This code was created by reverse engineering CVS 1.9 and RCS 5.7. |
| 22 | +
|
| 23 | +""" |
| 24 | + |
| 25 | +import os, sys, getopt, string, re |
| 26 | + |
| 27 | +sep1 = '='*77 + '\n' # file separator |
| 28 | +sep2 = '-'*28 + '\n' # revision separator |
| 29 | + |
| 30 | +def main(): |
| 31 | + """Main program""" |
| 32 | + truncate_last = 0 |
| 33 | + opts, args = getopt.getopt(sys.argv[1:], "-t") |
| 34 | + for o, a in opts: |
| 35 | + if o == '-t': |
| 36 | + truncate_last = 1 |
| 37 | + database = [] |
| 38 | + while 1: |
| 39 | + chunk = read_chunk(sys.stdin) |
| 40 | + if not chunk: |
| 41 | + break |
| 42 | + records = digest_chunk(chunk) |
| 43 | + if truncate_last: |
| 44 | + del records[-1] |
| 45 | + database[len(database):] = records |
| 46 | + database.sort() |
| 47 | + database.reverse() |
| 48 | + format_output(database) |
| 49 | + |
| 50 | +def read_chunk(fp): |
| 51 | + """Read a chunk -- data for one file, ending with sep1. |
| 52 | +
|
| 53 | + Split the chunk in parts separated by sep2. |
| 54 | +
|
| 55 | + """ |
| 56 | + chunk = [] |
| 57 | + lines = [] |
| 58 | + while 1: |
| 59 | + line = fp.readline() |
| 60 | + if not line: |
| 61 | + break |
| 62 | + if line == sep1: |
| 63 | + if lines: |
| 64 | + chunk.append(lines) |
| 65 | + break |
| 66 | + if line == sep2: |
| 67 | + if lines: |
| 68 | + chunk.append(lines) |
| 69 | + lines = [] |
| 70 | + else: |
| 71 | + lines.append(line) |
| 72 | + return chunk |
| 73 | + |
| 74 | +def digest_chunk(chunk): |
| 75 | + """Digest a chunk -- extrach working file name and revisions""" |
| 76 | + lines = chunk[0] |
| 77 | + key = 'Working file:' |
| 78 | + keylen = len(key) |
| 79 | + for line in lines: |
| 80 | + if line[:keylen] == key: |
| 81 | + working_file = string.strip(line[keylen:]) |
| 82 | + break |
| 83 | + else: |
| 84 | + working_file = None |
| 85 | + records = [] |
| 86 | + for lines in chunk[1:]: |
| 87 | + revline = lines[0] |
| 88 | + dateline = lines[1] |
| 89 | + text = lines[2:] |
| 90 | + words = string.split(dateline) |
| 91 | + if len(words) >= 3 and words[0] == 'date:': |
| 92 | + dateword = words[1] |
| 93 | + timeword = words[2] |
| 94 | + if timeword[-1:] == ';': |
| 95 | + timeword = timeword[:-1] |
| 96 | + date = dateword + ' ' + timeword |
| 97 | + else: |
| 98 | + date = None |
| 99 | + text.insert(0, revline) |
| 100 | + words = string.split(revline) |
| 101 | + if len(words) >= 2 and words[0] == 'revision': |
| 102 | + rev = words[1] |
| 103 | + else: |
| 104 | + rev = None |
| 105 | + text.insert(0, revline) |
| 106 | + records.append((date, working_file, rev, text)) |
| 107 | + return records |
| 108 | + |
| 109 | +def format_output(database): |
| 110 | + prevtext = None |
| 111 | + prev = [] |
| 112 | + database.append((None, None, None, None)) # Sentinel |
| 113 | + for (date, working_file, rev, text) in database: |
| 114 | + if text != prevtext: |
| 115 | + if prev: |
| 116 | + print sep2, |
| 117 | + for (date, working_file, rev) in prev: |
| 118 | + print date, working_file |
| 119 | + sys.stdout.writelines(prevtext) |
| 120 | + prev = [] |
| 121 | + prev.append((date, working_file, rev)) |
| 122 | + prevtext = text |
| 123 | + |
| 124 | +main() |
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