some preliminary work done on an argument parser & help menu/docs

.vscode/settings.json

@@ -1,7 +1,10 @@
 {
-        "workbench.colorCustomizations": {
-            "activityBar.background": "#322C2D",
-            "titleBar.activeBackground": "#463E3F",
-            "titleBar.activeForeground": "#FAFAFA"
-        }
+    "workbench.colorCustomizations": {
+        "activityBar.background": "#322C2D",
+        "titleBar.activeBackground": "#463E3F",
+        "titleBar.activeForeground": "#FAFAFA"
+    },
+    "[odin]": {
+        "editor.formatOnSave": true
+    }
 }

.vscode/tasks.json

@@ -77,7 +77,7 @@
                         "label": "Build&Run Atlas Generator Test",
                         "type": "shell",
                         "windows": {
-                                "command": "${workspaceFolder}/scripts/build_generator_debug.bat && build_generator\\aseprite_odin_generator.exe",
+                                "command": "${workspaceFolder}/scripts/build_generator_debug.bat && build_generator\\aseprite_odin_generator.exe -input-files:value_of_custom_arg -h",
                         },
                         "options": {
                                 "cwd": "${workspaceFolder}"

src/aseprite_odin_generator/aseprite_odin_generator.odin

@@ -14,13 +14,25 @@ import rl "vendor:raylib"
 import stbrp "vendor:stb/rect_pack"
 
 import gen ".."
+import utils "../utils"
 
 ATLAS_SIZE :: 512
 IMPORT_PATH :: "./src/aseprite_odin_generator/big.aseprite"
 EXPORT_PATH :: "./src/aseprite_odin_generator/atlas.png"
 
 main :: proc() {
-	fmt.println("Hello!")
+	args := utils.parse_arguments(os.args[1:])
+	fmt.println(args)
+
+	if ok := utils.CLIFlagType.Help in args; ok {
+		fmt.println("Help called!")
+		utils.print_help()
+		return
+	}
+	// if help, ok: args[utils.CLIFlagType.Help]; ok {
+	// 	fmt.println("Help called!")
+	// }
+
 	ase_file, ase_ok := os.read_entire_file(IMPORT_PATH)
 	if !ase_ok {
 		fmt.panicf("Couldn't load file!")
@@ -45,20 +57,4 @@ main :: proc() {
 	)
 
 	rl.ExportImage(atlas, EXPORT_PATH)
-
-        // something : string = "hello"
-        // fmt.printf("{1} {2} else", something, 10)
-
-	// TestStruct :: struct {
-	// 	something: struct {
-	// 		name: string,
-	// 		age:  int,
-	// 	},
-	// }
-        // ts: TestStruct
-        // ts.something.name = "name"
-
-        // jb, err := json.marshal(ts)
-        // sjb := transmute(string)jb
-        // fmt.println(sjb)
 }

src/utils/cli.odin

@@ -0,0 +1,96 @@
+package utils
+
+import "core:fmt"
+import s "core:strings"
+
+CLIFlagType :: enum {
+	Unknown,
+	InputFiles,
+	InputFolder,
+	OutputFolder,
+	ConfigPath,
+	EnableMetadataOutput,
+	MetadataJSONOutputPath,
+	SourceCodeOutputPathOutputPath,
+	Help,
+}
+
+CLI_FLAG_STRINGS := [CLIFlagType][]string {
+	.Unknown                        = {""},
+	.Help                           = {"h", "help"},
+	.InputFiles                     = {"f", "input-files"},
+	.InputFolder                    = {"d", "input-directory"},
+	.OutputFolder                   = {"o", "out"},
+	.EnableMetadataOutput           = {"m", "export-metadata"},
+	.ConfigPath                     = {"c", "config"},
+	.MetadataJSONOutputPath         = {"j", "json-path"},
+	.SourceCodeOutputPathOutputPath = {"s", "source-path"},
+}
+
+CLI_FLAG_DESCRIPTIONS := [CLIFlagType]string {
+	.Unknown                        = "Invalid flag",
+	.Help                           = "Prints the help message... hello!",
+	.InputFiles                     = "(real) path the source files for the packer (realpaths only), for multiple files you can provide one string of concateneted paths, separated by a ';'",
+	.InputFolder                    = "(real) path to a folder full of source files. This is an alternative to the -i[,input-files] flag",
+	.OutputFolder                   = "(real) path to the output folder for all the resulting files to be saved to.",
+	.EnableMetadataOutput           = "On by default. Whether or not to export metadata (JSON or source files with the offsets for the packer sprites in the atlas)",
+	.ConfigPath                     = "(real) path to a config file (json) that contains string definitions for exporting custom source files. More on this in the docs.",
+	.MetadataJSONOutputPath         = "(real) path for the resulting JSON that will be generated for the atlas. It overrides the name & location in regards to the -o[,output-folder] flag",
+	.SourceCodeOutputPathOutputPath = "(real) path for the resulting source code file that will be generated for the atlas. It overrides the name & location in regards to the -o[,output-folder] flag",
+}
+
+CLIFlag :: struct {
+	flag:     string,
+	value:    string,
+	cli_type: CLIFlagType,
+}
+
+categorize_arg :: proc(flag: string) -> (flag_type: CLIFlagType) {
+	flag_type = .Unknown
+	for flag_strings, enum_flag_type in CLI_FLAG_STRINGS {
+		for flag_string in flag_strings {
+			if flag == flag_string {
+				flag_type = enum_flag_type
+				return
+			}
+		}
+	}
+
+	return
+}
+
+print_help :: proc() {
+	for flag in CLIFlagType {
+		if flag == .Unknown do continue
+
+		fmt.printfln(
+			"Flag: -%v,%v \t -- %v",
+			CLI_FLAG_STRINGS[flag][0],
+			CLI_FLAG_STRINGS[flag][1],
+			CLI_FLAG_DESCRIPTIONS[flag],
+		)
+	}
+}
+
+parse_arguments :: proc(args: []string) -> (cliargs: map[CLIFlagType]CLIFlag) {
+	cliargs = make(map[CLIFlagType]CLIFlag)
+
+	for arg in args {
+		arg_name_and_value, err := s.split(arg, ":")
+		name := arg_name_and_value[0]
+
+		if name[0] == '-' {
+			name = name[1:]
+			value: string
+			flag_type := categorize_arg(name)
+
+			if len(arg_name_and_value) > 1 {
+				value = arg_name_and_value[1]
+			}
+
+			map_insert(&cliargs, flag_type, CLIFlag{name, value, flag_type})
+		}
+	}
+
+	return
+}

src/utils/helpers.odin

@@ -5,6 +5,13 @@ package utils
 import "core:intrinsics"
 import "core:reflect"
 import "core:strings"
+import rl "vendor:raylib"
+
+Texture :: rl.Texture
+Color :: rl.Color
+
+Rect :: rl.Rectangle
+RectEmpty :: Rect{}
 
 increase_or_wrap_enum :: proc(e: $T) -> T {
 	ei := int(e) + 1
@@ -45,4 +52,4 @@ Vec2 :: [2]f32
 
 vec2_from_vec2i :: proc(p: Vec2i) -> Vec2 {
 	return {f32(p.x), f32(p.y)}
-}
+}