gnuplot is supported again (-j and -J)

NEWS

@@ -3,8 +3,8 @@
 
 * 2.0
 
-- The code base has been rewritten for clarity and consistency.  The
-  code is now simpler, more robust, and a fair bit faster.
+- The code base was rewritten for clarity and consistency.  It is now
+  simpler, more robust, and faster.
 
 - The most significant feature addition in this version is the use of
   "value expressions".  These are now used in many places to indicate
@@ -22,9 +22,33 @@
   "-f" flag was seen (i.e., if the LEDGER environment variable is
   used).
 
+- New "-o FILE" option will output data to the given FILE.  If FILE is
+  "-", the output is the same as the default (stdout).
+
+- New -j and -J options replace the old -G (gnuplot) option.  -j
+  reports the values column in a way gnuplot can consume, and -J
+  reports the totals column.  An example can be found in
+  scripts/report.
+
 - New "-y DATEFMT" options will change the date format used throughout
   ledger.  The default is "%Y/%m/%d".
 
+- New -Y and -W options prints yearly and weekly subtotals, just as
+  the -M option printed monthly subtotals in the previous version.
+
+- New "-z INTERVAL" allows for more flexible interval reporting.  The
+  sublanguage used will probably mature over time, but for now it
+  supports expression like:
+
+    monthly
+    every week
+    every 3 quarters
+    weekly from 12/20
+
+  Note that when using the "from" date, this does not constrain the
+  report.  It is only used for aligning report dates, for example if
+  you wish weekly reporting to start on Sundays.
+
 - Regexps specified after the command name now apply to account names
   only.  To search on a payee, use "--" to separate the two kinds of
   regexps.  For example, to find a payee named "John" within all

main.cc

@@ -15,6 +15,8 @@ static const std::string bal_fmt = "%20T  %2_%-n\n";
 static const std::string reg_fmt
   = "%D %-.20P %-.22N %12.66t %12.80T\n\
 %/                                %-.22N %12.66t %12.80T\n";
+static const std::string plot_value_fmt = "%D %t\n";
+static const std::string plot_total_fmt = "%D %T\n";
 static const std::string print_fmt
   = "\n%D %X%C%P\n    %-34N  %12o\n%/    %-34N  %12o\n";
 static const std::string equity_fmt
@@ -219,7 +221,7 @@ int main(int argc, char * argv[])
   int c, index;
   while (-1 !=
 	 (c = getopt(argc, argv,
-	     "+ABb:Ccd:DEe:F:f:Ghi:L:l:MnOo:P:p:QRrS:sT:t:UVvWXYy:Zz:"))) {
+	     "+ABb:Ccd:DEe:F:f:Ghi:JjL:l:MnOo:P:p:QRrS:sT:t:UVvWXYy:Zz:"))) {
     switch (char(c)) {
     // Basic options
     case 'h':
@@ -435,6 +437,16 @@ int main(int argc, char * argv[])
       total_expr = "MD(MT/(1+(((t-d)/(30*86400))<0?0:((t-d)/(30*86400)))))";
       break;
 
+    case 'j':
+      value_expr    = "S" + value_expr;
+      format_string = plot_value_fmt;
+      break;
+
+    case 'J':
+      total_expr    = "S" + total_expr;
+      format_string = plot_total_fmt;
+      break;
+
     default:
       assert(0);
       break;

scripts/report

@@ -1,17 +1,15 @@
-#!/bin/sh
-
-args=("$@")
-last=${args[`expr ${#args} - 3`]}
+#!/bin/bash
 
 cd /tmp
-ledger "$@" | stripreg > $last
+ledger -j reg "$@" > report
 
 gnuplot <<EOF
 set terminal png
 set output "report.png"
 set xdata time
 set timefmt "%Y/%m/%d"
-plot "$1" using 1:2 with linespoints
+plot "report" using 1:2 with linespoints
 EOF
 
+rm -f report
 open report.png