init: working task add parser for go (#5)

Co-authored-by: Anish Lakhwara <anish+git@lakhwara.com>
Reviewed-on: #5

README

@@ -0,0 +1,33 @@
+# Mast
+
+This project is born out of frustration with Taskwarrior's upgrade to version 3.0.0 
+
+I'm looking to build my own task management software, after nearly a decade of using taskwarrior. It tries very hard to emulate the good of taskwarrior, while also being more modern. Opinionated defaults, meets malleable software. I loved Taskwarrior, it grew with me so much, but I believe I can do better. 
+
+## Goal Map
+
+I want a syncing cross platform, fast and effective tasks program. A web client for phone usage, and a CLI client at a computer. They sync through cr-sqlite, using a fairly simple websocket server (at this stage)
+
+I plan to keep the `filter` and `add` commands from Taskwarrior. Probably lots of the properties too. I'm using PEGs for parsing these grammars.
+I'd like real calendar integration (iCS) for `due:`
+
+I'm not yet sure what I'd like to do for priority. I like the configurability of taskwarrior, but it's very heavy handed. Some kind of slider would be nice
+
+I also need to find out a solution to virtual tags, and especially ID
+
+I need it to keep integration with Kitaab. That largely means a _json interface, which is fine. Some compatibility layer with Taskwarrior for taskwarrior-tui would be cool too, but isn't yet on the goal list. 
+
+## Status
+
+A vaguely unordered list of the next tasks to be accomplished, and those recently completed
+
+Next:
+- Parsing `task add` grammar (For JS)
+- Make SQL files common, instead of embedded in each
+- Parsing `task filter` grammar
+- Defining all attributes
+- Defining virtual attributes
+
+Completed: 
+- Syncing between JS & Go clients
+- Parsing `task add` grammar (For Go)

cli/main.go

@@ -8,6 +8,7 @@ import (
 	"os"
 
 	mast "mast/db"
+	parser "mast/parser"
 
 	"github.com/charmbracelet/bubbles/textinput"
 	tea "github.com/charmbracelet/bubbletea"
@@ -221,10 +222,25 @@ func (m model) View() string {
 	return s
 }
 
+// TODO:
+// Remove the parser test and call it when adding a todo
 func main() {
-	p := tea.NewProgram(initialModel())
-	if _, err := p.Run(); err != nil {
-		fmt.Printf("Alas, there's been an error: %v", err)
-		os.Exit(1)
+	if len(os.Args) < 2 {
+		fmt.Println("Please provide a Taskwarrior add command to parse")
+		return
 	}
+
+	input := os.Args[1]
+	result, err := parser.Parse("", []byte(input))
+	if err != nil {
+		fmt.Printf("Error parsing input: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Parsed result: %+v\n", result)
+	// p := tea.NewProgram(initialModel())
+	// if _, err := p.Run(); err != nil {
+	// 	fmt.Printf("Alas, there's been an error: %v", err)
+	// 	os.Exit(1)
+	// }
 }

flake.nix

@@ -3,16 +3,9 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
 
   outputs = { nixpkgs, ... }:
-  let
-    pkgs = nixpkgs.legacyPackages."x86_64-linux";
-  in
-  {
-    devShells."x86_64-linux".default = pkgs.mkShell {
-      packages = with pkgs; [ 
-        go 
-        sqlite
-        nodejs
-    ];
+    let pkgs = nixpkgs.legacyPackages."x86_64-linux";
+    in {
+      devShells."x86_64-linux".default =
+        pkgs.mkShell { packages = with pkgs; [ go sqlite nodejs pigeon ]; };
     };
-  };
 }

go.mod

@@ -23,13 +23,16 @@ require (
 	github.com/mattn/go-isatty v0.0.18 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mna/pigeon v1.2.1 // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
 	github.com/muesli/termenv v0.15.2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/mod v0.20.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sys v0.24.0 // indirect
 	golang.org/x/text v0.3.8 // indirect
+	golang.org/x/tools v0.24.0 // indirect
 )

go.sum

@@ -33,6 +33,8 @@ github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZ
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
 github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/mna/pigeon v1.2.1 h1:m5FxEbGdQxLaiHF+QurbWUAjmRqd5cstjIPN89svYgg=
+github.com/mna/pigeon v1.2.1/go.mod h1:BUZAoRldTdU7Ac3WYkXy8hzIHfCgj1doJxGjlB+AbLI=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=
 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
@@ -49,11 +51,19 @@ github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavM
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
+golang.org/x/mod v0.20.0 h1:utOm6MM3R3dnawAiJgn0y+xvuYRsm1RKM/4giyfDgV0=
+golang.org/x/mod v0.20.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
 golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
+golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
 golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/tools v0.24.0 h1:J1shsA93PJUEVaUSaay7UXAyE8aimq3GW0pjlolpa24=
+golang.org/x/tools v0.24.0/go.mod h1:YhNqVBIfWHdzvTLs0d8LCuMhkKUgSUKldakyV7W/WDQ=

parser/add.peg

@@ -0,0 +1,65 @@
+{
+package parser
+
+type Attribute struct{
+  Type string
+  Value string
+}
+
+type AddCommand struct {
+  Description string
+  Attributes []Attribute
+}
+
+func MakeAdd(description interface{}, attributes interface{}) (*AddCommand, error) {
+  attribs, _ := attributes.([]Attribute)
+	return &AddCommand{Description: description.(string), Attributes: attribs}, nil
+}
+
+func MakeAttributes(attributes interface{}) ([]Attribute, error) {
+  ats := attributes.([]interface{})
+
+  attribs := make([]Attribute, 0)
+  for _, p := range ats {
+    pa := p.([]interface{})
+		px := pa[1:]
+		for _, pi := range px {
+      ps := pi.(*Attribute)
+			attribs = append(attribs, *ps)
+		}
+  }
+  return attribs, nil
+}
+
+}
+
+Add <- desc:Description attributes:Attributes? {
+  return MakeAdd(desc, attributes) 
+}
+
+Description <- (!Attribute .)+ {
+  return string(c.text), nil
+}
+
+Attributes <- attributes:(_ Attribute)* {
+  return MakeAttributes(attributes)
+}
+Attribute <- Project / Priority / Tag 
+
+Project <- ("pro:" / "project:") value:Word {
+  return &Attribute{Type:"project", Value:value.(string)}, nil
+}
+Priority <- "priority:" value:[HML] {
+  return &Attribute{Type:"priority", Value:value.(string)}, nil
+}
+
+Tag <- "+" value:Word {
+  return &Attribute{Type:"tag", Value:value.(string)}, nil
+}
+
+Word <- [a-zA-Z0-9_-]+ {
+  return string(c.text), nil
+}
+_ <- [ \t]*
+
+EOF = !.

parser/main.go

@@ -0,0 +1,22 @@
+package parser
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Please provide a Taskwarrior add command to parse")
+		return
+	}
+
+	input := os.Args[1]
+	result, err := Parse("", []byte(input))
+	if err != nil {
+		fmt.Printf("Error parsing input: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Parsed result: %+v\n", result)
+}