Added tag 1.5 for changeset 98273ce331bb

If catching the exception is done with "except Exception as e:" this
will work only from 2.6. To maintain backward compatibility with 2.4 I
have used sys.exc_info(). A bit of a wart, but it works.

smem

@@ -8,7 +8,7 @@
 # the GNU General Public License version 2 or later, incorporated
 # herein by reference.
 
-import re, os, sys, pwd, grp, optparse, errno, tarfile
+import re, os, sys, pwd, optparse, errno, tarfile
 
 warned = False
 
@@ -21,7 +21,7 @@ class procdata(object):
     def _list(self):
         return os.listdir(self.source + "/proc")
     def _read(self, f):
-        return file(self.source + '/proc/' + f).read()
+        return open(self.source + '/proc/' + f).read()
     def _readlines(self, f):
         return self._read(f).splitlines(True)
     def _stat(self, f):
@@ -170,7 +170,7 @@ def pidmaps(pid):
     if options.mapfilter:
         f = {}
         for m in maps:
-            if not filter(options.mapfilter, m, lambda x: maps[x]['name']):
+            if not filters(options.mapfilter, m, lambda x: maps[x]['name']):
                 f[m] = maps[m]
         return f
 
@@ -222,10 +222,12 @@ def showamount(a, total):
     if options.abbreviate:
         return units(a * 1024)
     elif options.percent:
+        if total == 0:
+            return 'N/A'
         return "%.2f%%" % (100.0 * a / total)
     return a
 
-def filter(opt, arg, *sources):
+def filters(opt, arg, *sources):
     if not opt:
         return False
 
@@ -238,7 +240,7 @@ def pidtotals(pid):
     maps = pidmaps(pid)
     t = dict(size=0, rss=0, pss=0, shared_clean=0, shared_dirty=0,
              private_clean=0, private_dirty=0, referenced=0, swap=0)
-    for m in maps.iterkeys():
+    for m in maps:
         for k in t:
             t[k] += maps[m].get(k, 0)
 
@@ -250,8 +252,8 @@ def pidtotals(pid):
 def processtotals(pids):
     totals = {}
     for pid in pids:
-        if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
+        if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
-                filter(options.userfilter, pid, pidusername)):
+                filters(options.userfilter, pid, pidusername)):
             continue
         try:
             p = pidtotals(pid)
@@ -299,13 +301,13 @@ def showpids():
 def maptotals(pids):
     totals = {}
     for pid in pids:
-        if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
+        if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
-                filter(options.userfilter, pid, pidusername)):
+                filters(options.userfilter, pid, pidusername)):
             continue
         try:
             maps = pidmaps(pid)
             seen = {}
-            for m in maps.iterkeys():
+            for m in maps:
                 name = maps[m]['name']
                 if name not in totals:
                     t = dict(size=0, rss=0, pss=0, shared_clean=0,
@@ -364,8 +366,8 @@ def showmaps():
 def usertotals(pids):
     totals = {}
     for pid in pids:
-        if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
+        if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
-                filter(options.userfilter, pid, pidusername)):
+                filters(options.userfilter, pid, pidusername)):
             continue
         try:
             maps = pidmaps(pid)
@@ -381,7 +383,7 @@ def usertotals(pids):
         else:
             t = totals[user]
 
-        for m in maps.iterkeys():
+        for m in maps:
             for k in t:
                 t[k] += maps[m].get(k, 0)
 
@@ -461,11 +463,44 @@ def showsystem():
     showtable(range(len(l)), fields, columns.split(), options.sort or 'order')
 
 def showfields(fields, f):
-    if f != list:
+    if type(f) in (list, set):
-        print "unknown field", f
+        print("unknown fields: " + " ".join(f))
-    print "known fields:"
+    else:
-    for l in sorted(fields.keys()):
+        print("unknown field %s" % f)
-        print "%-8s %s" % (l, fields[l][-1])
+    print("known fields:")
+    for l in sorted(fields):
+        print("%-8s %s" % (l, fields[l][-1]))
+
+def autosize(columns, fields, rows):
+    colsizes = {}
+    for c in columns:
+        sizes = [1]
+
+        if not options.no_header:
+            sizes.append(len(fields[c][0]))
+
+        if (options.abbreviate or options.percent) and 'a' in fields[c][2]:
+            sizes.append(7)
+        else:
+            for r in rows:
+                sizes.append(len(str(fields[c][1](r))))
+
+        colsizes[c] = max(sizes)
+
+    overflowcols = set(["command", "map"]) & set(columns)
+    if len(overflowcols) > 0:
+        overflowcol = overflowcols.pop()
+        totnoflow = sum(colsizes.values()) - colsizes[overflowcol]
+        try:
+            ttyrows, ttycolumns = os.popen('stty size', 'r').read().split()
+            ttyrows, ttycolumns = int(ttyrows), int(ttycolumns)
+        except:
+            ttyrows, ttycolumns = (24, 80)
+        maxflowcol = ttycolumns - totnoflow - len(columns)
+        maxflowcol = max(maxflowcol, 10)
+        colsizes[overflowcol] = min(colsizes[overflowcol], maxflowcol)
+
+    return colsizes
 
 def showtable(rows, fields, columns, sort):
     header = ""
@@ -484,11 +519,17 @@ def showtable(rows, fields, columns, sort):
     mt = totalmem()
     st = memory()['swaptotal']
 
-    for n in columns:
+    missing = set(columns) - set(fields)
-        if n not in fields:
+    if len(missing) > 0:
-            showfields(fields, n)
+        showfields(fields, missing)
         sys.exit(-1)
 
+    if options.autosize:
+        colsizes = autosize(columns, fields, rows)
+    else:
+        colsizes = {}
+
+    for n in columns:
         f = fields[n][2]
         if 'a' in f:
             if n == 'swap':
@@ -498,6 +539,8 @@ def showtable(rows, fields, columns, sort):
             f = f.replace('a', 's')
         else:
             formatter.append(lambda x: x)
+        if n in colsizes:
+            f = re.sub(r"[0-9]+", str(colsizes[n]), f)
         format += f + " "
         header += f % fields[n][0] + " "
 
@@ -516,10 +559,10 @@ def showtable(rows, fields, columns, sort):
         return
 
     if not options.no_header:
-        print header
+        print(header)
 
     for k,r in l:
-        print format % tuple([f(v) for f,v in zip(formatter, r)])
+        print(format % tuple([f(v) for f,v in zip(formatter, r)]))
 
     if options.totals:
         # totals
@@ -531,8 +574,8 @@ def showtable(rows, fields, columns, sort):
             else:
                 t.append("")
 
-        print "-" * len(header)
+        print("-" * len(header))
-        print format % tuple([f(v) for f,v in zip(formatter, t)])
+        print(format % tuple([f(v) for f,v in zip(formatter, t)]))
 
 def showpie(l, sort):
     try:
@@ -621,6 +664,8 @@ parser.add_option("-c", "--columns", type="str",
                   help="columns to show")
 parser.add_option("-t", "--totals", action="store_true",
                   help="show totals")
+parser.add_option("-a", "--autosize", action="store_true",
+                  help="size columns to fit terminal size")
 
 parser.add_option("-R", "--realmem", type="str",
                   help="amount of physical RAM")
@@ -680,7 +725,8 @@ try:
         showsystem()
     else:
         showpids()
-except IOError, e:
+except IOError:
+    _, e, _ = sys.exc_info()
     if e.errno == errno.EPIPE:
         pass
 except KeyboardInterrupt:

smem.8

@@ -95,6 +95,10 @@ User filter regular expression.
 
 .SS OUTPUT FORMATTING
 
+.TP
+.B \-a, \-\-autosize
+Size columns to fit terminal size.
+
 .TP
 .BI "\-c " COLUMNS ", \-\-columns=" COLUMNS
 Columns to show.