Improve the cleanliness of the git existence check

Signed-off-by: jakub-nt <[email protected]>

cfbs/commands.py

@@ -53,7 +53,7 @@
 )
 from cfbs.index import _VERSION_INDEX, Index
 from cfbs.git import (
-    check_git_exists,
+    git_exists,
     is_git_repo,
     git_commit,
     git_get_config,
@@ -179,9 +179,7 @@ def init_command(index=None, masterfiles=None, non_interactive=False) -> int:
         do_git = True if do_git == "yes" else False
 
     if do_git is True:
-        try:
-            check_git_exists()
-        except FileNotFoundError as e:
+        if not git_exists():
             print("Command 'git' was not found")
             return 1
 

cfbs/git.py

@@ -18,11 +18,12 @@ class CFBSGitError(Exception):
     pass
 
 
-def check_git_exists():
+def git_exists():
     try:
         check_call(["git", "--version"], stdout=DEVNULL)
-    except CalledProcessError as cpe:
-        raise CFBSGitError("'git' was not found") from cpe
+        return True
+    except FileNotFoundError:
+        return False
 
 
 def ls_remote(remote, branch):