fix: fit the progress line to the terminal

install.ps1

@@ -8,7 +8,7 @@ param(
 
 $ErrorActionPreference = "Stop"
 $defaultInstallUrl = "https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
-$defaultInstallSha256 = "324baf5363d46da75cb7f166e83b323a40ce6502084314360f909e9d1ff4dd4e"
+$defaultInstallSha256 = "aec72e43585459efb0fd49d2eafb49b0e898b9ddc0f9ca2f44c7636080e21425"
 $maximumInstallerBytes = 2MB
 $installerExit = 0
 $installer = if ($PSScriptRoot) { Join-Path $PSScriptRoot "install.py" } else { $null }

install.py

@@ -340,19 +340,34 @@ class Progress:
 
     def _draw(self) -> None:
         share = min(self.bytes / self.total_bytes, 1.0)
-        filled = int(share * self.BAR)
-        bar = "#" * filled + "-" * (self.BAR - filled)
         elapsed = self.elapsed()
         speed = self.bytes / elapsed if elapsed > 0 else 0
         left = (self.total_bytes - self.bytes) / speed if speed > 0 else 0
-        text = (
-            f"  [{bar}] {share * 100:5.1f}%  "
-            f"{format_size(self.bytes)} / {format_size(self.total_bytes)}  "
-            f"{format_size(int(speed))}/s  "
-            f"{format_duration(left)} left  "
-            f"({self.files}/{self.total_files} files)"
-        )
-        print(f"\r\033[K{text}", end="", file=self.term.stream, flush=True)
+        parts = [
+            f"{share * 100:5.1f}%",
+            f"{format_size(self.bytes)} / {format_size(self.total_bytes)}",
+            f"{format_size(int(speed))}/s",
+            f"{format_duration(left)} left",
+            f"({self.files}/{self.total_files} files)",
+        ]
+        # One physical line, whatever the width: \r\033[K clears only the
+        # line the cursor is on, so a wrapped line left a ghost per redraw
+        # on an 80-column console. The bar gives way first, then the least
+        # telling figures.
+        width = shutil.get_terminal_size((80, 24)).columns - 1
+        while True:
+            tail = "  ".join(parts)
+            room = width - len(tail) - 6
+            if room >= 10 or len(parts) == 1:
+                break
+            parts.pop()
+        if room >= 10:
+            bar_width = min(self.BAR, room)
+            filled = int(share * bar_width)
+            text = f"  [{'#' * filled}{'-' * (bar_width - filled)}] {tail}"
+        else:
+            text = f"  {tail}"
+        print(f"\r\033[K{text[:width]}", end="", file=self.term.stream, flush=True)
 
 
 # The three RetroArch packages published for Android, newest ABI first.

install.sh

@@ -18,7 +18,7 @@ esac
 TEMP_INSTALLER=""
 TEMP_DIRECTORY=""
 DEFAULT_INSTALL_URL="https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
-DEFAULT_INSTALL_SHA256="324baf5363d46da75cb7f166e83b323a40ce6502084314360f909e9d1ff4dd4e"
+DEFAULT_INSTALL_SHA256="aec72e43585459efb0fd49d2eafb49b0e898b9ddc0f9ca2f44c7636080e21425"
 MAX_INSTALLER_BYTES=2097152
 
 cleanup() {

tests/test_install.py

@@ -2631,5 +2631,31 @@ class AChunkedCutIsADownloadFailure(unittest.TestCase):
         self.assertIn("IncompleteRead", reason)
 
 
+
+class TheProgressLineFitsTheTerminal(unittest.TestCase):
+    """At 80 columns the 94-100 column line wrapped, and every redraw left
+    a ghost line behind."""
+
+    def test_each_width(self):
+        import os as _os
+
+        for columns in (40, 60, 80, 120):
+            with self.subTest(columns=columns):
+                out = io.StringIO()
+                term = install.Terminal(out)
+                term.live = True
+                progress = install.Progress(5865, 2_300_000_000, term)
+                progress.bytes = 1_000_000_000
+                progress.files = 5000
+                with unittest.mock.patch.object(
+                    install.shutil, "get_terminal_size",
+                    return_value=_os.terminal_size((columns, 24)),
+                ):
+                    progress._draw()
+                line = out.getvalue().split("\033[K")[-1]
+                self.assertLess(len(line), columns)
+                self.assertIn("%", line)
+
+
 if __name__ == "__main__":
     unittest.main()