Add persistent_history configuration.

Project.toml

@@ -1,7 +1,7 @@
 name = "Diary"
 uuid = "601e5a01-99c6-4314-b727-62e0eec533dd"
 authors = ["Sakse <[email protected]>"]
-version = "0.1.0"
+version = "0.1.1"
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"

docs/src/configuration.md

@@ -5,16 +5,18 @@ Configuration of Diary.jl is done through `Diary.toml` files.  A global configur
 An example `Diary.toml` file looks like the following:
 ```toml
 author = "Anna"
+autocommit = true
+blacklist = ["/home/anna/.julia/environments"]
 date_format = "E U d HH:MM"
 diary_name = "diary.jl"
-autocommit = true
 directory_mode = false
-blacklist = ["/home/anna/.julia/environments"]
 ```
 If a field is not set, it will be set to a default value.
 
-- The `author` and `date_format` fields affect the header written in diary files and default to `""` and `"E U d HH:MM"` respectively.  For a full list of date formatting options, consult the documentation for `Dates.format`.
-- `diary_file` specifies the name to be used for the diary file and defaults to `"diary.jl"`.
-- `autocommit` defaults to `true`.  If set to `false`, the diary file will not be automatically updated with the most recent history file changes.  Instead, changes must be manually committed by using the diary command comment syntax, `# diary: commit [n]` to commit the `n` most recent code blocks.
-- `directory_mode` defaults to `false`.  If set to `true`, the root folder of the diary file is set to the current working directory, rather than the project directory.
-- `blacklist` is a list of patterns that will disable Diary.jl, for projects that match them.  By default, the list is set to `["$HOME/.julia/environments"]`.  Set this to an empty vector to enable Diary.jl for all projects.
+- `author`: defaults to `""`.  Written as part of the comment header to the diary file at the start of every session.
+- `autocommit`: defaults to `true`.  If set to `false`, the diary file will not be automatically updated with the most recent history file changes.  Instead, changes must be manually committed by using the diary command comment syntax, `# diary: commit [n]` to commit the `n` most recent code blocks.
+- `blacklist`: defaults to `["$HOME/.julia/environments"]`.  `blacklist` is a list of patterns that will disable Diary.jl, if a name or part of the path to a project matches it.  Set this to an empty vector to enable Diary.jl for all projects.
+- `date_format`: defaults to `"E U d HH:MM"`.  The format of the date that is written to the comment header at the start of every session.  For a full list of date formatting options, see the documentation for `Dates.format`.
+- `diary_file`: defaults to `diary.jl`.  Specifies the name to be used for the diary file.
+- `directory_mode`: defaults to `false`.  If set to `true`, the root folder of the diary file is set to the current working directory, rather than the project directory.
+- `persistent_history`: defaults to `true`.  If set to `false`, the REPL history will not be saved for future sessions.  This option does not affect the diary file.

src/Diary.jl

@@ -67,8 +67,10 @@ function watch_task(history_file, repl_history_file=nothing)
             if file_event.changed
                 history_lines = readlines(history_file_handle)
                 @debug "Diary.jl ($history_file): History file has changed:" history_lines
+                # Read user configuration.
+                configuration = read_configuration()
                 # Copy history lines to the REPL history file
-                if !isnothing(repl_history_file)
+                if configuration["persistent_history"] && !isnothing(repl_history_file)
                     open(repl_history_file, read=true, write=true) do io
                         seekend(io)
                         println(io, join(history_lines, '\n'))
@@ -84,8 +86,6 @@ function watch_task(history_file, repl_history_file=nothing)
                     continue
                 end
                 push!(GLOBAL_SEGMENT_BUFFER, diary_lines)
-                # Read user configuration.
-                configuration = read_configuration()
                 # Skip if auto-committing is disabled.
                 !configuration["autocommit"] && continue
                 # Locate the diary file.
@@ -190,7 +190,9 @@ function find_diary(; configuration=read_configuration())
     end
     # Create the diary file if missing.
     !isfile(diary_file) && touch(diary_file)
-
+    # Allow task switching by sleeping for 1 ms.  Necessary for the tests to pass.
+    # Shouldn't affect normal usage.
+    sleep(0.001)
     return diary_file
 end
 
@@ -233,13 +235,14 @@ Return the default configuration.
 function default_configuration()
     return Dict{String,Any}(
         "author" => "",
-        "diary_name" => "diary.jl",
-        "date_format" => "E U d HH:MM",
         "autocommit" => true,
-        "directory_mode" => false,
         "blacklist" => [
-           joinpath(ENV["HOME"], ".julia", "environments"),
-        ]
+            joinpath(ENV["HOME"], ".julia", "environments"),
+        ],
+        "date_format" => "E U d HH:MM",
+        "diary_name" => "diary.jl",
+        "directory_mode" => false,
+        "persistent_history" => true,
     )
 end
 

test/runtests.jl

@@ -54,13 +54,14 @@ end
     Pkg.activate()
     default_configuration = Dict{String,Any}(
         "author" => "",
-        "diary_name" => "diary.jl",
-        "date_format" => "E U d HH:MM",
         "autocommit" => true,
-        "directory_mode" => false,
         "blacklist" => [
-           joinpath(ENV["HOME"], ".julia", "environments"),
-        ]
+            joinpath(ENV["HOME"], ".julia", "environments"),
+        ],
+        "date_format" => "E U d HH:MM",
+        "diary_name" => "diary.jl",
+        "directory_mode" => false,
+        "persistent_history" => true,
     )
 
     ENV["JULIA_DIARY_CONFIG"] = tempname()
@@ -171,6 +172,7 @@ end
     # Re-initialise Diary, enabling the watcher.
     ENV["JULIA_HISTORY"] = tempname()
     touch(ENV["JULIA_HISTORY"])
+    repl_history_file = ENV["JULIA_HISTORY"]
     Diary.__init__(enabled=true)
     # Locate relevant files.
     history_file = ENV["JULIA_HISTORY"]
@@ -200,6 +202,7 @@ end
     file_event = FileWatching.watch_file(diary_file, 5)
     @test file_event.changed || file_event.timedout
     @test readlines(diary_file) == ["# Test: ", "", "a = rand(100)"]
+    @test readlines(repl_history_file) == history_lines
 
     # Add line with incorrect syntax and check that it does not update the diary file.
     history_lines = [
@@ -217,6 +220,32 @@ end
     @test file_event.timedout
     @test readlines(diary_file) == ["# Test: ", "", "a = rand(100)"]
 
+    @testset "Non-persistent history" begin
+        previous_history_lines = readlines(repl_history_file)
+
+        open(configuration_file, write=true) do io
+            configuration = [
+                "author = \"Test\"",
+                "date_format = \"\"",
+                "persistent_history = false"
+            ]
+            join(io, configuration, "\n")
+            print(io, "\n")
+        end
+        # Simulate user interaction by writing lines to the history file.
+        open(history_file, read=true, write=true) do io
+            seekend(io)
+            join(io, ["# time: ***", "# mode: julia", "\tb = 42"], "\n")
+            print(io, "\n")
+        end
+        # Allow the `watch_task` to update the diary file.
+        file_event = FileWatching.watch_file(diary_file, 5)
+        @test file_event.changed || file_event.timedout
+        @test readlines(diary_file) == ["# Test: ", "", "a = rand(100)", "b = 42"]
+        # Test that the original history file hasn't changed.
+        @test readlines(repl_history_file) == previous_history_lines
+    end
+
     # Clean-up
     rm(diary_file)
 end