smarter splash size selection, disable flag

lib/ansible/cli/splash/__init__.py

@@ -1,18 +1,71 @@
+import fcntl
+import os
 import pkgutil
+import random
 import re
 
+from importlib.resources import contents
+from itertools import groupby
+from struct import pack, unpack
+from termios import TIOCGWINSZ
 
-def dump_splash(splash_name='chaosbomb_80x40', color=True):
+
+class _SplashInfo:
+    splash_rc_re = re.compile(r'(?P<name>\w+)_(?P<cols>\d+)x(?P<rows>\d+).txt')
+
+    def __init__(self, splash_name: str):
+        m = self.splash_rc_re.match(splash_name)
+        if not m:
+            raise ValueError(f'invalid splash name {splash_name}')
+
+        self.cols: int = int(m.group('cols'))
+        self.rows: int = int(m.group('rows'))
+        self.basename: str = m.group('name')
+        self.filename = splash_name
+
+    @property
+    def area(self) -> int:
+        return self.cols * self.rows
+
+    def fits(self, cols, rows):
+        return self.cols <= cols and self.rows <= rows
+
+    def __repr__(self):
+        return f"_SplashInfo('{self.filename}')"
+
+    @classmethod
+    def is_valid_splash_name(self, splash_name):
+        return bool(_SplashInfo.splash_rc_re.match(splash_name))
+
+
+def dump_splash(color=True):
     try:
-        b_data = pkgutil.get_data(__package__, f'{splash_name}.txt')
+        if not os.isatty(1):
+            return
+        tty_rows, tty_cols = unpack('HHHH', fcntl.ioctl(1, TIOCGWINSZ, pack('HHHH', 0, 0, 0, 0)))[0:2]
     except Exception:
-        # TODO: warn
         return
 
-    # TODO: are we a TTY?
-    # TODO: select the right size based on TTY caps
-    # TODO: do we support color
-    # TODO: filter escape codes if not color
+    if os.environ.get('ANSIBLE_NO_SPLASH', None):
+        return
+
+    # adjust for typical version output length
+    tty_rows -= 12
+
+    all_splashes = [_SplashInfo(s) for s in sorted(contents(__package__)) if _SplashInfo.is_valid_splash_name(s)]
+
+    available_splashes = []
+    # get the largest version of each basename that fits the window
+    available_splashes = [max(splashes, key=lambda s: s.area) for _, splashes in groupby((s for s in all_splashes if s.fits(tty_cols, tty_rows)), lambda x: x.basename)]
+
+    if not available_splashes:
+        return
+
+    try:
+        b_data = pkgutil.get_data(__package__, f'{random.choice(available_splashes).filename}')
+    except Exception:
+        # TODO: warn
+        return
 
     if not b_data:
         return
@@ -28,6 +81,6 @@ _ansi_re = None  # ANSI escape sequence re lazy compiled on first use
 def _filter_ansi(raw):
     global _ansi_re
     if not _ansi_re:  # lazily compile the RE
-        _ansi_re = re.compile('\033\[([0-9;]*)m')
+        _ansi_re = re.compile(r'\033\[([0-9;]*)m')
 
     return re.sub(_ansi_re, '', raw)

lib/ansible/cli/splash/redhat_40x15.txt

@@ -1,15 +0,0 @@
-           .'''''.'''''''..             
-          .'''''''''''''''''''.         
-          .''''''''''''''''''''.        
-         .''''''''''''''''''''''.       
-         .''''''''''''''''''''''.       
-  ..''''  .''''''''''''''''''''''       
-.'''''''    ..'''''''''''''''''''.      
-'''''''''       ..''''''''''''''. ..    
-.'''''''''..         ..........   .''.. 
- ''''''''''''..                   '''''.
-  .''''''''''''''....          ..'''''''
-    .'''''''''''''''''''''''''''''''''''
-       .''''''''''''''''''''''''''''''''
-           .'''''''''''''''''''''''''''.
-                .'''''''''''''''''''..  

lib/ansible/cli/splash/redhat_80x30.txt

@@ -1,30 +0,0 @@
-                        .......       ..'''''...                                
-                       .'''''''''....''''''''''''''..                           
-                      .''''''''''''''''''''''''''''''''...                      
-                     .'''''''''''''''''''''''''''''''''''''..                   
-                    ..''''''''''''''''''''''''''''''''''''''''.                 
-                    .''''''''''''''''''''''''''''''''''''''''''.                
-                   .'''''''''''''''''''''''''''''''''''''''''''.                
-                  ..''''''''''''''''''''''''''''''''''''''''''''.               
-                  .'''''''''''''''''''''''''''''''''''''''''''''.               
-                  .''''''''''''''''''''''''''''''''''''''''''''''.              
-           ..'..    .''''''''''''''''''''''''''''''''''''''''''''.              
-    ...'''''''''     ..'''''''''''''''''''''''''''''''''''''''''''              
-  ..''''''''''''        .'''''''''''''''''''''''''''''''''''''''''.             
- .''''''''''''''.         ..''''''''''''''''''''''''''''''''''''''.             
-.''''''''''''''''.            ..''''''''''''''''''''''''''''''''''.             
-.'''''''''''''''''..              ...''''''''''''''''''''''''''''.  '...        
-.'''''''''''''''''''..                  ....'''''''''''''''''...    .'''..      
- .'''''''''''''''''''''.                              .             .''''''.    
-  .'''''''''''''''''''''''..                                        '''''''''.  
-   .'''''''''''''''''''''''''...                                   .''''''''''..
-    ..''''''''''''''''''''''''''''...                           ..'''''''''''''.
-      ..''''''''''''''''''''''''''''''''......            ....''''''''''''''''''
-        ..''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-           ..'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-              ..''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-                  ..'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''.
-                      ..''''''''''''''''''''''''''''''''''''''''''''''''''''''. 
-                          ...'''''''''''''''''''''''''''''''''''''''''''''''..  
-                                ...''''''''''''''''''''''''''''''''''''''..     
-                                       .'..''''''''''''''''''''''''''..