Create balloon.py

src/balloon.py

@@ -0,0 +1,107 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from types import NoneType
+from typing import Optional
+from result import Result, Ok, Err
+from icecream import ic
+import os
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from _typeshed import StrPath
+
+WORK_DIR: StrPath = os.getcwd()
+
+@dataclass
+class Tag:
+    value: str
+    trail: Optional[str]
+
+    def __post_init__(self) -> None:
+        self.trail = self.trail if (self.trail is not None) and (self.trail.strip() != '') else None
+
+    # Returns the type of tag.
+    def type(self) -> str:
+        type = str()
+
+        for c in self.value:
+            if c.isspace():
+                break
+
+            type += c
+
+        return type
+
+    def get_param(self, param: str) -> Optional[str]:
+        pos = self.value.find(param) + param.__len__() + len('="')
+
+        if pos == -1:
+            return None
+
+        param_value = str()
+
+        for idx in range(pos, (self.value.__len__() - param.__len__())):
+            param_value += self.value[idx]
+
+        return param_value
+
+    def write(self) -> str:
+        return f'<{self.value}>{self.trail if self.trail != None else ''}'
+
+@dataclass
+class HTML:
+    value: str
+
+    # Returns all tags in order in the html file.
+    def tags(self) -> list[Tag]:
+        tag = str()
+        trail: Optional[str] = str()
+        tags = list()
+        record = False
+
+        for c in self.value:
+            if c == '<' and tag != '':
+                tags.append(Tag(tag, trail))
+                tag = str()
+                trail = str()
+
+            if c == '<' or c == '>':
+                record = not record # why can't I have ! operator...
+            elif record == True:
+                tag += c
+            else:
+                trail += c
+
+        tags.append(Tag(tag, trail))
+        return tags
+
+    def inflate(self) -> Result[str, str]:
+        file = str()
+
+        for tag in self.tags():
+            if tag.type() == 'include':
+                chunk = tag.get_param('src')
+                if isinstance(chunk, NoneType):
+                    return Err('FileNotFoundError')
+
+                html = HTML(open(str(WORK_DIR) + '/src/' + chunk, 'rt').read())
+                file += html.inflate().expect('FileNotFoundError')
+            else:
+                file += tag.write()
+
+        return Ok(file)
+
+    # Convert the HTML obj into a str to write to file.
+    def write(self) -> str:
+        return self.inflate().unwrap()
+
+
+def main() -> None:
+    with open(str(WORK_DIR) + '/src/index.html', 'rt') as f:
+        html_src = HTML(f.read())
+    with open(str(WORK_DIR) + '/target/index.html', 'w') as f:
+        f.write(html_src.write())
+
+if __name__ == '__main__':
+    main()