From 3042de8658d532e451ac5ff5f1e0be772ed07770 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Thu, 6 Nov 2014 15:36:36 -0500
Subject: [PATCH] src log works.

---
 src | 60 +++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 49 insertions(+), 11 deletions(-)

diff --git a/src b/src
index db86201..4c67d8c 100755
--- a/src
+++ b/src
@@ -6,6 +6,11 @@ import sys, os, subprocess, time
 
 version = 0.1
 
+def screenwidth():
+    "Return the current width of the terminal window."
+    with popen_or_die(b'stty size', b"rb") as tp:
+        return int(tp.read().split()[1])
+
 def rfc3339(t):
     "RFC3339 string from Unix time."
     return time.strftime(b"%Y-%m-%dT%H:%M:%SZ", time.gmtime(t))
@@ -20,7 +25,7 @@ def croak(msg):
     sys.stderr.write("src: " + msg + "\n")
     sys.exit(1)
 
-debug = 1
+debug = 0
 DEBUG_COMMANDS  = 1    # Show commands as they are executed
 
 def do_or_die(dcmd, legend=b""):
@@ -62,15 +67,42 @@ class popen_or_die:
                                  % (self.command, self.legend, oe))
     def __exit__(self, extype, value, traceback_unused):
         if extype:
-            if verbose:
-                complain(b"fatal exception in popen_or_die.")
+            complain(b"fatal exception in popen_or_die.")
             raise extype(value)
         if self.fp.close() is not None:
             complain(b"%s%s returned error." % (self.command, self.legend))
         return False
 
 def log_capture(fn):
-    return popen_or_die("cd .src >/dev/null; rlog %s; cd ..>/dev/null" % fn)
+    "Capture and parse the metadata for a specified file."
+    with popen_or_die("cd .src >/dev/null; rlog %s; cd ..>/dev/null" % fn) as fp:
+        revlist = []
+        maxrevno = 0
+        state = "initial"
+        for line in fp:
+            if line.startswith("----------------------------"):
+                state = "logheader"
+                revlist.append(RCSRevisionItem(maxrevno))
+                maxrevno += 1
+            elif state == "logheader" and line.startswith("revision"):
+                fields = line.split()
+                revlist[-1].revision = fields[1]
+            elif state == "logheader" and line.startswith("date"):
+                fields = line.split()
+                date = fields[1] + " " + fields[2]
+                if date.endswith(";"):
+                    date = date[:-1]
+                date = date.replace("/", "-").replace(" ", "T") + "Z"
+                revlist[-1].date = date
+            elif line.startswith("======================="):
+                if not revlist[-1].log.endswith("\n"):
+                    revlist[-1].log += "\n"
+                break
+            elif revlist:
+                revlist[-1].log += line
+        for item in revlist:
+            item.revno = maxrevno - item.revno
+    return revlist
 
 def help_method(*args):
     "Summarize src commands, or (with argument) show help for a single command."
@@ -154,16 +186,22 @@ def commit_method(*args):
            do_or_die("mv .src/{0},v . && ci -l {0} && mv {0},v .src".format(arg))
            announce("%s %d" % (arg, revcount(arg))) 
 
+class RCSRevisionItem:
+    "Capture the state of an RCS revision item in the log."
+    def __init__(self, revno):
+        self.revno = revno;
+        self.revision = None
+        self.log = ""
+        self.date = None
+
 def log_method(*args):
     args = preamble("log", args)
+    width = screenwidth()
     for arg in args:
-        sys.stdout.write("%s:\n" % arg)
-        with log_capture(arg) as fp:
-            revno = 0
-            for line in fp:
-                if line.startswith("----------------------------"):
-                    revno += 1
-    print "%d\n" % revno
+        sys.stdout.write("= %s %s\n" % (arg, ((width - len(arg) - 5) * "=")))
+        for item in log_capture(arg):
+            sys.stdout.write("%d | %s\n%s" % (item.revno, item.date, item.log))
+            sys.stdout.write(("-" * (width - 1)) + "\n")
 
 dispatch = {
     "help":   help_method,
-- 
2.43.0