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diff mercurial/posix.py @ 11010:18e81d42ee5c stable

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util: fix default termwidth() under Windows sys.stdout.write('-'*80 + '\n') or sys.stdout.write('-'*80 + '\r') do not work on Windows as they do on unix. On a 80 columns Windows console, the extra CR or LF are interpreted as if belonging to the next line, so the first command displays 2 lines (only one on unix) and the second one leave the line visible and move back to the following line. To avoid this, we sacrifice one column under Windows.
author Patrick Mezard <pmezard@gmail.com>
date Mon, 26 Apr 2010 22:30:40 +0200
parents d6512b3e9ac0
children 648130161e4d
line wrap: on
line diff
--- a/mercurial/posix.py	Tue Apr 27 00:44:06 2010 +0530
+++ b/mercurial/posix.py	Mon Apr 26 22:30:40 2010 +0200
@@ -264,3 +264,27 @@
 
 def gethgcmd():
     return sys.argv[:1]
+
+def termwidth_():
+    try:
+        import termios, array, fcntl
+        for dev in (sys.stderr, sys.stdout, sys.stdin):
+            try:
+                try:
+                    fd = dev.fileno()
+                except AttributeError:
+                    continue
+                if not os.isatty(fd):
+                    continue
+                arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8)
+                return array.array('h', arri)[1]
+            except ValueError:
+                pass
+            except IOError, e:
+                if e[0] == errno.EINVAL:
+                    pass
+                else:
+                    raise
+    except ImportError:
+        pass
+    return 80