Add explicit dependency on isaac >= 0.1.2

Something depends on isaac 0.1.0, but that version doesn't compile on Nim 0.16
and above. Until the transitive dependancy is updated, ask for at least 0.1.2.

private/ptkutil.nim

@@ -0,0 +1,8 @@
+template first*(a: openarray): auto = a[0]
+
+template last*(a: openarray): auto = a[len(a)-1]
+
+proc flatten*[T](a: seq[seq[T]]): seq[T] =
+  result = @[]
+  for subseq in a:
+    result.add(subseq)

ptk.nim

@@ -6,11 +6,14 @@
 import algorithm, docopt, json, langutils, logging, os, nre, sequtils,
   sets, strutils, tempfile, terminal, times, timeutils, uuids
 
-import ptkutil
+import private/ptkutil
 
 type
   Mark* = tuple[id: UUID, time: TimeInfo, summary: string, notes: string, tags: seq[string]]
+    ## Representation of a single mark on the timeline.
+
   Timeline* = tuple[name: string, marks: seq[Mark]]
+    ## Representation of a timeline: a name and sequence of Marks.
 
 const STOP_MSG = "STOP"
 
@@ -19,12 +22,16 @@ let NO_MARK: Mark = (
   time: fromSeconds(0).getLocalTime,
   summary: "", notes: "", tags: @[])
 
-const ISO_TIME_FORMAT = "yyyy:MM:dd'T'HH:mm:ss"
+const ISO_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ss"
+  ## The canonical time format used by PTK.
 
 const TIME_FORMATS = @[
-    "H:mm", "HH:mm", "H:mm:ss", "HH:mm:ss",
-    "yyyy:MM:dd'T'HH:mm:ss", "yyyy:MM:dd'T'HH:mm",
-    "yyyy:MM:dd HH:mm:ss", "yyyy:MM:dd HH:mm"]
+    "yyyy-MM-dd'T'HH:mm:ss", "yyyy-MM-dd HH:mm:ss",
+    "yyyy-MM-dd'T'HH:mm", "yyyy-MM-dd HH:mm",
+    "MM-dd'T'HH:mm:ss", "MM-dd HH:mm:ss",
+    "MM-dd'T'HH:mm", "MM-dd HH:mm",
+    "HH:mm:ss", "H:mm:ss", "H:mm", "HH:mm" ]
+  ## Other time formats that PTK will accept as input.
 
 #proc `$`*(mark: Mark): string =
   #return (($mark.uuid)[
@@ -34,6 +41,7 @@ proc exitErr(msg: string): void =
   quit(QuitFailure)
 
 proc parseTime(timeStr: string): TimeInfo =
+  ## Helper to parse time strings trying multiple known formats. 
   for fmt in TIME_FORMATS:
     try: return parse(timeStr, fmt)
     except: discard nil
@@ -53,6 +61,10 @@ template `%`(timeline: Timeline): JsonNode =
   %* { "name": timeline.name, "marks": timeline.marks }
 
 proc loadTimeline(filename: string): Timeline =
+  ## Load a timeline from a file. Expects a path to a file (can be relative or
+  ## absolute) and returns a Timeline. The marks in the timeline are guaranteed
+  ## to be ordered by time.
+
   var timelineJson: JsonNode
   try: timelineJson = parseFile(filename)
   except:
@@ -62,9 +74,17 @@ proc loadTimeline(filename: string): Timeline =
   var timeline: Timeline = (name: timelineJson["name"].getStr(), marks: @[])
 
   for markJson in timelineJson["marks"]:
+
+    # TODO: an incorrect time format that was used in version 0.6 and prior.
+    # Version 0.7 between 1.0 support this format on read only and will write
+    # out the correct  format (so they can be used to convert older timelines).
+    var time: TimeInfo
+    try: time = parse(markJson["time"].getStr(), ISO_TIME_FORMAT)
+    except: time = parse(markJson["time"].getStr(), "yyyy:MM:dd'T'HH:mm:ss")
+
     timeline.marks.add((
       id: parseUUID(markJson["id"].getStr()),
-      time: parse(markJson["time"].getStr(), ISO_TIME_FORMAT),
+      time: time, #parse(markJson["time"].getStr(), ISO_TIME_FORMAT),
       summary: markJson["summary"].getStr(),
       notes: markJson["notes"].getStr(),
       tags: markJson["tags"].getElems(@[]).map(proc (t: JsonNode): string = t.getStr())))
@@ -75,6 +95,8 @@ proc loadTimeline(filename: string): Timeline =
   return timeline
 
 proc saveTimeline(timeline: Timeline, location: string): void =
+  ## Write the timeline to disk at the file location given.
+
   var timelineFile: File
   try:
     timelineFile = open(location, fmWrite)
@@ -83,6 +105,8 @@ proc saveTimeline(timeline: Timeline, location: string): void =
   finally: close(timelineFile)
 
 proc flexFormat(i: TimeInterval): string =
+  ## Pretty-format a time interval.
+
   let fmt =
     if i > 1.days: "d'd' H'h' m'm'"
     elif i >= 1.hours: "H'h' m'm'"
@@ -94,6 +118,8 @@ proc flexFormat(i: TimeInterval): string =
 type WriteData = tuple[idx: int, mark: Mark, prefixLen: int, interval: TimeInterval]
 
 proc writeMarks(timeline: Timeline, indices: seq[int], includeNotes = false): void =
+  ## Write a nicely-formatted list of Marks to stdout.
+
   let marks = timeline.marks
   let now = getLocalTime(getTime())
 
@@ -152,6 +178,9 @@ proc writeMarks(timeline: Timeline, indices: seq[int], includeNotes = false): vo
       writeLine(stdout, "")
 
 proc formatMark(mark: Mark, nextMark = NO_MARK, timeFormat = ISO_TIME_FORMAT, includeNotes = false): string =
+  ## Pretty-format a Mark, optionally taking the next Mark in the timeline (to
+  ## compute duration) and a time format string, and conditionally including
+  ## the Mark's notes in the output.
 
   let nextTime =
     if nextMark == NO_MARK: getLocalTime(getTime())
@@ -178,7 +207,17 @@ proc findById(marks: seq[Mark], id: string): int =
 
   return -1
 
+proc getLastIndex(marks: seq[Mark]): int =
+  ## Find and return the index of the last Mark that was not a STOP mark.
+  ## Returns -1 if there is no such last mark.
+
+  var idx = marks.len - 1
+  while idx >= 0 and marks[idx].summary == STOP_MSG: idx -= 1
+  if idx < 0: result = -1
+  else: result = idx
+
 proc doInit(timelineLocation: string): void =
+  ## Interactively initialize a new timeline at the given file path.
 
   stdout.write "Time log name [New Timeline]: "
   let name = stdin.readLine()
@@ -197,6 +236,9 @@ proc doInit(timelineLocation: string): void =
 type ExpectedMarkPart = enum Time, Summary, Tags, Notes
 
 proc edit(mark: var Mark): void =
+  ## Interactively edit a mark using the editor named in the environment
+  ## variable "EDITOR"
+
   var
     tempFile: File
     tempFileName: string
@@ -231,6 +273,9 @@ proc edit(mark: var Mark): void =
   finally: close(tempFile)
 
 proc filterMarkIndices(timeline: Timeline, args: Table[string, Value]): seq[int] =
+  ## Filter down a set of marks according to options provided in command line
+  ## arguments.
+
   let marks = timeline.marks
   result = sequtils.toSeq(0..<marks.len).filterIt(marks[it].summary != STOP_MSG)
 
@@ -295,12 +340,14 @@ Usage:
   ptk init [options]
   ptk add [options]
   ptk add [options] <summary>
-  ptk amend [options] <id> [<summary>]
+  ptk resume [options] [<id>]
+  ptk amend [options] [<id>] [<summary>]
   ptk merge <timeline> [<timeline>...]
   ptk stop [options]
   ptk continue
   ptk delete <id>
   ptk (list | ls) [options]
+  ptk (list | ls) tags
   ptk sum-time --ids <ids>...
   ptk sum-time [options] [<firstId>] [<lastId>]
   ptk (-V | --version)
@@ -333,7 +380,7 @@ Options:
   let now = getLocalTime(getTime())
 
   # Parse arguments
-  let args = docopt(doc, version = "ptk 0.6.0")
+  let args = docopt(doc, version = "ptk 0.10.0")
 
   if args["--echo-args"]: echo $args
 
@@ -464,17 +511,50 @@ Options:
 
       if args["--edit"]: edit(newMark)
 
+      let prevLastIdx = timeline.marks.getLastIndex()
       timeline.marks.add(newMark)
       timeline.writeMarks(
-        indices = @[timeline.marks.len - 1],
+        indices = @[prevLastIdx, timeline.marks.len - 1],
         includeNotes = args["--verbose"])
 
       saveTimeline(timeline, timelineLocation)
 
+    if args["resume"]:
+
+      var markToResumeIdx: int
+
+      if args["<id>"]:
+        markToResumeIdx = timeline.marks.findById($args["<id>"])
+        if markToResumeIdx == -1: exitErr "Cannot find a mark matching " & $args["<id>"]
+      else: markToResumeIdx = timeline.marks.getLastIndex()
+      var markToResume = timeline.marks[markToResumeIdx]
+      
+      var newMark: Mark = (
+        id: genUUID(),
+        time: if args["--time"]: parseTime($args["--time"]) else: now,
+        summary: markToResume.summary,
+        notes: markToResume.notes,
+        tags: markToResume.tags)
+
+      if args["--edit"]: edit(newMark)
+
+      timeline.marks.add(newMark)
+      timeline.writeMarks(
+        indices = sequtils.toSeq(markToResumeIdx..<timeline.marks.len),
+        includeNotes = args["--verbose"])
+        
+      saveTimeline(timeline, timelineLocation)
+
     if args["amend"]:
 
       # Note, this returns a copy, not a reference to the mark in the seq.
-      let markIdx = timeline.marks.findById($args["<id>"])
+      var markIdx: int
+
+      if args["<id>"]:
+        markIdx = timeline.marks.findById($args["<id>"])
+        if markIdx == -1: exitErr "Cannot find a mark matching " & $args["<id>"]
+      else: markIdx = timeline.marks.getLastIndex()
+
       var mark = timeline.marks[markIdx]
       
       if args["<summary>"]: mark.summary = $args["<summary>"]
@@ -511,11 +591,17 @@ Options:
 
     if args["list"] or args["ls"]:
 
-      var selectedIndices = timeline.filterMarkIndices(args)
+      if args["tags"]:
 
-      timeline.writeMarks(
-        indices = selectedIndices,
-        includeNotes = args["--version"])
+        echo $(timeline.marks.mapIt(it.tags)
+                .flatten().deduplicate().sorted(system.cmp).join("\n"))
+
+      else:
+        var selectedIndices = timeline.filterMarkIndices(args)
+
+        timeline.writeMarks(
+          indices = selectedIndices,
+          includeNotes = args["--version"])
 
     if args["sum-time"]:
     

ptk.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.6.0"
+version       = "0.10.0"
 author        = "Jonathan Bernard"
 description   = "Personal Time Keeper"
 license       = "MIT"
@@ -8,5 +8,5 @@ bin           = @["ptk"]
 
 # Dependencies
 
-requires @["nim >= 0.15.0", "docopt >= 0.6.4", "uuids", "langutils", "tempfile", "timeutils >= 0.2.0"]
+requires @["nim >= 0.15.0", "docopt >= 0.6.4", "uuids", "langutils", "tempfile", "timeutils >= 0.2.0", "isaac >= 0.1.2"]
 

ptkutil.nim

@@ -1,3 +0,0 @@
-template first*(a: openarray): auto = a[0]
-
-template last*(a: openarray): auto = a[len(a)-1]