feature: agrego comando branch para listar ramas

src/git_flow/command/branch.py

@@ -0,0 +1,79 @@
+from argparse import ArgumentParser, Namespace
+from git_flow import GitFlowError
+from git_flow.command.base import COLOR_GREEN, COLOR_RED, COLOR_RESET, Command
+from git_flow.git import Git
+
+
+BRANCH_FORMAT = "%(refname:short)"
+
+
+class BranchCommand(Command):
+    def name(self) -> str:
+        return "branch"
+
+    def description(self) -> str:
+        return """Lista ramas del repositorio, agrupandolas por entorno objetivo"""
+
+    def setup_parser(self, parser: ArgumentParser) -> ArgumentParser:
+        parser.add_argument(
+            "environment",
+            nargs="?",
+            help="Entorno de las ramas a listar. Puede ser vacio para listar ramas de todos los entornos, un entorno válido, o 'trash' para listar las ramas eliminadas.",
+        )
+
+        return parser
+
+    def run(self, args: Namespace = Namespace()):
+        self.ensure_initialized()
+
+        self.current_branch = Git.get_current_branch()
+        self.environments = self.flowconfig["flow.branches"].split(",")
+
+        if args.environment is None:
+            self.show_all_branches()
+        elif args.environment == "trash":
+            self.show_trash_branches()
+        elif args.environment in self.environments:
+            self.show_env_branches(args.environment)
+        else:
+            raise GitFlowError(f"'{args.environment}' no es un entorno válido.")
+
+    def show_trash_branches(self):
+        branches = self.get_trash_branches()
+
+        for branch in branches:
+            prefix = (COLOR_RED + "*") if branch == self.current_branch else " "
+            print(prefix + " " + branch + COLOR_RESET)
+
+    def get_trash_branches(self):
+        return Git("for-each-ref", "refs/heads/trash/", format=BRANCH_FORMAT).lines()
+
+    def show_all_branches(self):
+        for environment in self.environments:
+            self.show_env_branches(environment)
+
+        trash = len(self.get_trash_branches())
+        print("\nTrash: " + str(trash) + " rama" + ("" if trash == 1 else "s"))
+
+    def show_env_branches(self, environment: str):
+        is_first_env = environment == self.environments[0]
+        branches = (
+            Git(
+                "for-each-ref",
+                "refs/heads/",
+                exclude=["refs/heads/trash/", "refs/heads/release/"],
+                format=BRANCH_FORMAT,
+            ).lines()
+            if is_first_env
+            else Git(
+                "for-each-ref",
+                "refs/heads/release/" + environment + "/",
+                format=BRANCH_FORMAT,
+            ).lines()
+        )
+
+        for branch in branches:
+            prefix = (COLOR_GREEN + "*") if branch == self.current_branch else " "
+            print(prefix + " " + branch + COLOR_RESET)
+
+