| ledger-combineView |
|---|
| 1 | +#!/usr/bin/env perl |
| 2 | + |
| 3 | +use strict; |
| 4 | +use warnings; |
| 5 | +use Time::Piece; |
| 6 | +use Time::Seconds 'ONE_DAY'; |
| 7 | + |
| 8 | +$| = 1; |
| 9 | + |
| 10 | +my @files; |
| 11 | +my @buffer; |
| 12 | + |
| 13 | +# acceptable time difference to consider transactions matching |
| 14 | +my $time_difference = 7 * ONE_DAY; |
| 15 | + |
| 16 | +my $dateformat = "%Y/%m/%d"; |
| 17 | + |
| 18 | +if ($#ARGV == -1) { |
| 19 | + print STDERR "Usage: $0 [journal.ledger]...\n"; |
| 20 | + exit 1; |
| 21 | +} |
| 22 | + |
| 23 | +my @in_filenames = @ARGV; |
| 24 | +my $out_filename; |
| 25 | + |
| 26 | +if ($out_filename) { |
| 27 | + open OUTFILE, '>', $out_filename; |
| 28 | + OUTFILE->autoflush(1); |
| 29 | +} else { |
| 30 | + open OUTFILE, '>&STDOUT'; |
| 31 | +} |
| 32 | + |
| 33 | +sub read_entry { |
| 34 | + my $fh = shift; |
| 35 | + return if !defined $fh or eof $fh; |
| 36 | + |
| 37 | + my $amounts = {}; |
| 38 | + my $lines = []; |
| 39 | + my $entry = { |
| 40 | + lines => $lines, |
| 41 | + amounts => $amounts, |
| 42 | + fh => $fh, |
| 43 | + }; |
| 44 | + |
| 45 | + # Read lines until found entry date |
| 46 | + while(1) { |
| 47 | + my $line = <$fh>; |
| 48 | + unless (defined $line) { |
| 49 | + # fh is closed |
| 50 | + return; |
| 51 | + } |
| 52 | + push @$lines, $line; |
| 53 | + if ($line =~ /^([0-9]{4}[\/-][0-9]{1,2}[\/-][0-9]{1,2})/) { |
| 54 | + # Make the date string lexically comparable |
| 55 | + $entry->{date} = Time::Piece->strptime($1, $dateformat) or die("$!"); |
| 56 | + last; |
| 57 | + } |
| 58 | + } |
| 59 | + |
| 60 | + # Read until reaching a blank line |
| 61 | + while(1) { |
| 62 | + my $line = <$fh>; |
| 63 | + unless (defined $line) { |
| 64 | + # fh is closed |
| 65 | + push @$lines, "\n"; |
| 66 | + return $entry; |
| 67 | + } |
| 68 | + push @$lines, $line; |
| 69 | + return $entry if $line =~ /^$/; |
| 70 | + # Record item amounts |
| 71 | + if ($line =~ /^\s*[^;].*?(?:\s\s|\t)\s*[^@ ]*? ?[^ 0-9]?-?([0-9.,]+)0*[^@]*?\s+(?:;.*|@.*)?$/) { |
| 72 | + # Account 35.0 BTC @ $15.19 |
| 73 | + $amounts->{+$1} = 1; |
| 74 | + } |
| 75 | + } |
| 76 | + |
| 77 | + return $entry; |
| 78 | +} |
| 79 | + |
| 80 | +sub print_entry { |
| 81 | + my ($stream, $entry) = @_; |
| 82 | + my $date = $entry->{date}; |
| 83 | + print $stream $_ for @{ $entry->{lines} }; |
| 84 | +} |
| 85 | + |
| 86 | +sub pop_oldest_entry { |
| 87 | + return unless scalar @buffer; |
| 88 | + |
| 89 | + # pick the oldest entry |
| 90 | + my $oldest = $buffer[0]; |
| 91 | + for my $entry (@buffer[1..$#buffer]) { |
| 92 | + if ($entry->{date} < $oldest->{date}) { |
| 93 | + $oldest = $entry; |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + if ($oldest) { |
| 98 | + # remove the entry from the buffer |
| 99 | + @buffer = grep { $_ != $oldest } @buffer; |
| 100 | + # read a new entry from the same stream and add it to the buffer |
| 101 | + my $fh = $oldest->{fh}; |
| 102 | + if (my $new_entry = read_entry $fh) { |
| 103 | + push @buffer, $new_entry; |
| 104 | + } |
| 105 | + } |
| 106 | + |
| 107 | + return $oldest; |
| 108 | +} |
| 109 | + |
| 110 | +# Open the ledger journals |
| 111 | +for my $filename (@in_filenames) { |
| 112 | + open my $fh, '<', $filename or die "Unable to open file $filename: $!"; |
| 113 | + push @files, $fh; |
| 114 | +} |
| 115 | + |
| 116 | +# Read first from each journal |
| 117 | +for my $fh (@files) { |
| 118 | + push @buffer, read_entry($fh); |
| 119 | +} |
| 120 | + |
| 121 | +while (my $entry = pop_oldest_entry) { |
| 122 | + print_entry \*OUTFILE, $entry; |
| 123 | +} |