added command line arguments support

main.py

@@ -1,6 +1,29 @@
+import argparse
+
 from schema import InstructionSetSchema
 
+description = """Examples:
+    - Default theme (black on white):
+        python main.py schema.xml -o out.jpg
+
+    - Dark theme (white on black):
+        python main.py schema.xml -o out.jpg -c dark.json
+
+    - Blueprint theme (white on blue):
+        python main.py schema.xml -o out.jpg -c blueprint.json
+
+    - Transparent background:
+        python main.py schema.xml -o out.png -c transparent.json
+"""
+
 if __name__ == "__main__":
-    schema = InstructionSetSchema("example1.yaml")
-    schema.save("example1_v2.jpg")
-    input()
+    parser = argparse.ArgumentParser(description=description, formatter_class=argparse.RawTextHelpFormatter)
+    parser.add_argument("schema", help="Path to the schema description. Accepted formats are: YAML, JSON and XML")
+    parser.add_argument("-o", "--output", help="Output path", default="out.jpg")
+    parser.add_argument("-c", "--config", help="Path to the config file", default="config.json")
+    parser.add_argument("-D", "--display", help="Enable pygame display of the result", action="store_true")
+    
+    args = parser.parse_args()
+    
+    schema = InstructionSetSchema(args.schema, args.config, args.display)
+    schema.save(args.output)

renderer.py

@@ -1,4 +1,5 @@
 from __future__ import annotations
+import os
 from typing import TYPE_CHECKING
 if TYPE_CHECKING:
     from config import Config
@@ -14,10 +15,13 @@ class Renderer:
     WIDTH = 1200
     HEIGHT = 800
     
-    def __init__(self, config: Config) -> None:
+    def __init__(self, config: Config, display: bool = False) -> None:
         self.config = config
+        self.display = display
         pygame.init()
-        self.win = pygame.display.set_mode([Renderer.WIDTH, Renderer.HEIGHT])
+        if self.display:
+            self.win = pygame.display.set_mode([Renderer.WIDTH, Renderer.HEIGHT])
+        
         self.surf = pygame.Surface([Renderer.WIDTH, Renderer.HEIGHT], pygame.SRCALPHA)
         self.font = pygame.font.SysFont(self.config.DEFAULT_FONT_FAMILY, self.config.DEFAULT_FONT_SIZE)
         self.italicFont = pygame.font.SysFont(self.config.ITALIC_FONT_FAMILY, self.config.ITALIC_FONT_SIZE, italic=True)
@@ -25,14 +29,16 @@ class Renderer:
         self.margins = self.config.MARGINS
     
     def render(self, schema: InstructionSetSchema) -> None:
-        
-        self.win.fill(self.config.BACKGROUND_COLOR)
         self.surf.fill(self.config.BACKGROUND_COLOR)
         
         self.drawStructure(schema.structures["main"], schema.structures, self.margins[3], self.margins[0])
         
-        self.win.blit(self.surf, [0, 0])
-        pygame.display.flip()
+        if self.display:
+            name = os.path.basename(schema.path)
+            pygame.display.set_caption(f"Rivet - {name}")
+            self.win.fill(self.config.BACKGROUND_COLOR)
+            self.win.blit(self.surf, [0, 0])
+            pygame.display.flip()
     
     def save(self, path: str) -> None:
         pygame.image.save(self.surf, path)

schema.py

@@ -13,8 +13,9 @@ class UnsupportedFormatException(Exception):
 class InstructionSetSchema:
     VALID_EXTENSIONS = ("yaml", "json", "xml")
     
-    def __init__(self, path: str, configPath: str = "config.json") -> None:
+    def __init__(self, path: str, configPath: str = "config.json", display: bool = False) -> None:
         self.config = Config(configPath)
+        self.display = display
         self.path = path
         self.load()
     
@@ -43,6 +44,8 @@ class InstructionSetSchema:
             self.structures[id_] = Structure.load(id_, data)
     
     def save(self, path: str) -> None:
-        renderer = Renderer(self.config)
+        renderer = Renderer(self.config, self.display)
         renderer.render(self)
-        renderer.save(path)
+        renderer.save(path)
+        if self.display:
+            input("Press ENTER to quit")