profiling: Adding a profiling.format config variable

Allows defining other output formats for profiling.

If an invalid format is given, output a warning and ignore it.
For now, only the standard 'text' value is supported.

doc/hgrc.5.txt

@@ -545,6 +545,13 b' profiling::'
   collected during profiling, while 'profiling report' stands for a
   statistical text report generated from the profiling data.
   The profiling is done using lsprof.
+  format;;
+    Profiling format.
+    Default: text.
+    text;;
+      Generate a profiling report.
+      When saving to a file, it should be noted that only the report is saved,
+      and the profiling data is not kept.
   output;;
     File path where profiling data or report should be saved.
     If the file exists, it is replaced.

mercurial/dispatch.py

@@ -379,6 +379,13 b' def _runcommand(ui, options, cmd, cmdfun'
             raise error.ParseError(cmd, _("invalid arguments"))
 
     if options['profile']:
+        format = ui.config('profiling', 'format', default='text')
+
+        if not format in ['text']:
+            ui.warn(_("unrecognized profiling format '%s'"
+                        " - Ignored\n") % format)
+            format = 'text'
+
         output = ui.config('profiling', 'output')
 
         if output:

tests/test-profile

@@ -15,4 +15,7 b' if "$TESTDIR/hghave" -q lsprof; then'
         || echo --profile + output to file failed
     grep CallCount < ../out > /dev/null \
         || echo wrong --profile output when saving to a file
+
+    hg --profile --config profiling.format=text st 2>&1 \
+        | grep CallCount > /dev/null || echo --profile format=text failed
 fi