Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2015-05-15' into staging

qapi: Fix qapi mangling of downstream names, and more

# gpg: Signature made Fri May 15 17:41:31 2015 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-qapi-2015-05-15: (26 commits)
  qapi: Inline gen_command_decl_prologue(), gen_command_def_prologue()
  qapi: Drop pointless flush() before close()
  qapi: Factor open_output(), close_output() out of generators
  qapi: Turn generators' mandatory option -i into an argument
  qapi: Fix generators to report command line errors decently
  qapi: Factor parse_command_line() out of the generators
  qapi: qapi-commands.py option --type is unused, drop it
  qapi: qapi-event.py option -b does nothing, drop it
  tests: Add missing dependencies on $(qapi-py)
  qapi: Support downstream events and commands
  qapi: Support downstream alternates
  qapi: Support downstream flat unions
  qapi: Support downstream simple unions
  qapi: Support downstream structs
  qapi: Support downstream enums
  qapi: Make c_type() consistently convert qapi names
  qapi: Tidy c_type() logic
  qapi: Move camel_to_upper(), c_enum_const() to closely related code
  qapi: Use c_enum_const() in generate_alternate_qtypes()
  qapi: Simplify c_enum_const()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

15 files changed, 453 insertions, 552 deletions

diff --git a/Makefile b/Makefile
index f032158..d945804 100644
--- a/Makefile
+++ b/Makefile
@@ -243,17 +243,17 @@ qapi-py = $(SRC_PATH)/scripts/qapi.py $(SRC_PATH)/scripts/ordereddict.py
 qga/qapi-generated/qga-qapi-types.c qga/qapi-generated/qga-qapi-types.h :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" $<, \
 		"  GEN   $@")
 qga/qapi-generated/qga-qapi-visit.c qga/qapi-generated/qga-qapi-visit.h :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" $<, \
 		"  GEN   $@")
 qga/qapi-generated/qga-qmp-commands.h qga/qapi-generated/qga-qmp-marshal.c :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" $<, \
 		"  GEN   $@")
 
 qapi-modules = $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/qapi/common.json \
@@ -263,22 +263,22 @@ qapi-modules = $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/qapi/common.json \
 qapi-types.c qapi-types.h :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o "." -b -i $<, \
+		$(gen-out-type) -o "." -b $<, \
 		"  GEN   $@")
 qapi-visit.c qapi-visit.h :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o "." -b -i $<, \
+		$(gen-out-type) -o "." -b $<, \
 		"  GEN   $@")
 qapi-event.c qapi-event.h :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-event.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-event.py \
-		$(gen-out-type) -o "." -b -i $<, \
+		$(gen-out-type) -o "." $<, \
 		"  GEN   $@")
 qmp-commands.h qmp-marshal.c :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o "." -m -i $<, \
+		$(gen-out-type) -o "." -m $<, \
 		"  GEN   $@")
 
 QGALIB_GEN=$(addprefix qga/qapi-generated/, qga-qapi-types.h qga-qapi-visit.h qga-qmp-commands.h)
diff --git a/cpus.c b/cpus.c
index 62d157a..de6469f 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1435,6 +1435,7 @@ CpuInfoList *qmp_query_cpus(Error **errp)
         info->value->CPU = cpu->cpu_index;
         info->value->current = (cpu == first_cpu);
         info->value->halted = cpu->halted;
+        info->value->qom_path = object_get_canonical_path(OBJECT(cpu));
         info->value->thread_id = cpu->thread_id;
 #if defined(TARGET_I386)
         info->value->has_pc = true;
diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt
index 269a1f3..3f0522e 100644
--- a/docs/qapi-code-gen.txt
+++ b/docs/qapi-code-gen.txt
@@ -536,7 +536,7 @@ created code.
 Example:
 
     $ python scripts/qapi-types.py --output-dir="qapi-generated" \
-    --prefix="example-" --input-file=example-schema.json
+    --prefix="example-" example-schema.json
     $ cat qapi-generated/example-qapi-types.c
 [Uninteresting stuff omitted...]
 
@@ -623,7 +623,7 @@ $(prefix)qapi-visit.h: declarations for previously mentioned visitor
 Example:
 
     $ python scripts/qapi-visit.py --output-dir="qapi-generated"
-    --prefix="example-" --input-file=example-schema.json
+    --prefix="example-" example-schema.json
     $ cat qapi-generated/example-qapi-visit.c
 [Uninteresting stuff omitted...]
 
@@ -681,7 +681,7 @@ Example:
         error_propagate(errp, err);
     }
     $ python scripts/qapi-commands.py --output-dir="qapi-generated" \
-    --prefix="example-" --input-file=example-schema.json
+    --prefix="example-" example-schema.json
     $ cat qapi-generated/example-qapi-visit.h
 [Uninteresting stuff omitted...]
 
@@ -715,7 +715,7 @@ $(prefix)qmp-commands.h: Function prototypes for the QMP commands
 Example:
 
     $ python scripts/qapi-commands.py --output-dir="qapi-generated"
-    --prefix="example-" --input-file=example-schema.json
+    --prefix="example-" example-schema.json
     $ cat qapi-generated/example-qmp-marshal.c
 [Uninteresting stuff omitted...]
 
@@ -806,7 +806,7 @@ $(prefix)qapi-event.c - Implementation of functions to send an event
 Example:
 
     $ python scripts/qapi-event.py --output-dir="qapi-generated"
-    --prefix="example-" --input-file=example-schema.json
+    --prefix="example-" example-schema.json
     $ cat qapi-generated/example-qapi-event.c
 [Uninteresting stuff omitted...]
 
diff --git a/docs/qmp/qmp-events.txt b/docs/qmp/qmp-events.txt
index 6dc2cca..4c13d48 100644
--- a/docs/qmp/qmp-events.txt
+++ b/docs/qmp/qmp-events.txt
@@ -232,7 +232,7 @@ Example:
 { "event": "GUEST_PANICKED",
      "data": { "action": "pause" } }
 
-MEM_HOT_UNPLUG_ERROR
+MEM_UNPLUG_ERROR
 --------------------
 Emitted when memory hot unplug error occurs.
 
@@ -243,7 +243,7 @@ Data:
 
 Example:
 
-{ "event": "MEM_HOT_UNPLUG_ERROR"
+{ "event": "MEM_UNPLUG_ERROR"
   "data": { "device": "dimm1",
             "msg": "acpi: device unplug for unsupported device"
   },
diff --git a/qapi-schema.json b/qapi-schema.json
index 9c92482..f97ffa1 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -679,6 +679,8 @@
 # @halted: true if the virtual CPU is in the halt state.  Halt usually refers
 #          to a processor specific low power mode.
 #
+# @qom_path: path to the CPU object in the QOM tree (since 2.4)
+#
 # @pc: #optional If the target is i386 or x86_64, this is the 64-bit instruction
 #                pointer.
 #                If the target is Sparc, this is the PC component of the
@@ -699,8 +701,10 @@
 #        data is sent to the client, the guest may no longer be halted.
 ##
 { 'struct': 'CpuInfo',
-  'data': {'CPU': 'int', 'current': 'bool', 'halted': 'bool', '*pc': 'int',
-           '*nip': 'int', '*npc': 'int', '*PC': 'int', 'thread_id': 'int'} }
+  'data': {'CPU': 'int', 'current': 'bool', 'halted': 'bool',
+           'qom_path': 'str',
+           '*pc': 'int', '*nip': 'int', '*npc': 'int', '*PC': 'int',
+           'thread_id': 'int'} }
 
 ##
 # @query-cpus:
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 7506774..14e109e 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -2569,6 +2569,7 @@ Return a json-array. Each CPU is represented by a json-object, which contains:
 - "CPU": CPU index (json-int)
 - "current": true if this is the current CPU, false otherwise (json-bool)
 - "halted": true if the cpu is halted, false otherwise (json-bool)
+- "qom_path": path to the CPU object in the QOM tree (json-str)
 - Current program counter. The key's name depends on the architecture:
      "pc": i386/x86_64 (json-int)
      "nip": PPC (json-int)
@@ -2585,14 +2586,16 @@ Example:
             "CPU":0,
             "current":true,
             "halted":false,
-            "pc":3227107138
+            "qom_path":"/machine/unattached/device[0]",
+            "pc":3227107138,
             "thread_id":3134
          },
          {
             "CPU":1,
             "current":false,
             "halted":true,
-            "pc":7108165
+            "qom_path":"/machine/unattached/device[2]",
+            "pc":7108165,
             "thread_id":3135
          }
       ]
diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 93e43f0..1c1d3aa 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -15,28 +15,19 @@
 from ordereddict import OrderedDict
 from qapi import *
 import re
-import sys
-import os
-import getopt
-import errno
-
-def type_visitor(name):
-    if type(name) == list:
-        return 'visit_type_%sList' % name[0]
-    else:
-        return 'visit_type_%s' % name
 
 def generate_command_decl(name, args, ret_type):
     arglist=""
     for argname, argtype, optional in parse_args(args):
         argtype = c_type(argtype, is_param=True)
         if optional:
-            arglist += "bool has_%s, " % c_var(argname)
-        arglist += "%s %s, " % (argtype, c_var(argname))
+            arglist += "bool has_%s, " % c_name(argname)
+        arglist += "%s %s, " % (argtype, c_name(argname))
     return mcgen('''
 %(ret_type)s qmp_%(name)s(%(args)sError **errp);
 ''',
-                 ret_type=c_type(ret_type), name=c_fun(name), args=arglist).strip()
+                 ret_type=c_type(ret_type), name=c_name(name),
+                 args=arglist).strip()
 
 def gen_err_check(errvar):
     if errvar:
@@ -55,14 +46,14 @@ def gen_sync_call(name, args, ret_type, indent=0):
         retval = "retval = "
     for argname, argtype, optional in parse_args(args):
         if optional:
-            arglist += "has_%s, " % c_var(argname)
-        arglist += "%s, " % (c_var(argname))
+            arglist += "has_%s, " % c_name(argname)
+        arglist += "%s, " % (c_name(argname))
     push_indent(indent)
     ret = mcgen('''
 %(retval)sqmp_%(name)s(%(args)s&local_err);
 
 ''',
-                name=c_fun(name), args=arglist, retval=retval).rstrip()
+                name=c_name(name), args=arglist, retval=retval).rstrip()
     if ret_type:
         ret += "\n" + gen_err_check('local_err')
         ret += "\n" + mcgen(''''
@@ -76,7 +67,7 @@ def gen_sync_call(name, args, ret_type, indent=0):
 def gen_marshal_output_call(name, ret_type):
     if not ret_type:
         return ""
-    return "qmp_marshal_output_%s(retval, ret, &local_err);" % c_fun(name)
+    return "qmp_marshal_output_%s(retval, ret, &local_err);" % c_name(name)
 
 def gen_visitor_input_containers_decl(args, obj):
     ret = ""
@@ -101,17 +92,17 @@ def gen_visitor_input_vars_decl(args):
             ret += mcgen('''
 bool has_%(argname)s = false;
 ''',
-                         argname=c_var(argname))
+                         argname=c_name(argname))
         if is_c_ptr(argtype):
             ret += mcgen('''
 %(argtype)s %(argname)s = NULL;
 ''',
-                         argname=c_var(argname), argtype=c_type(argtype))
+                         argname=c_name(argname), argtype=c_type(argtype))
         else:
             ret += mcgen('''
 %(argtype)s %(argname)s = {0};
 ''',
-                         argname=c_var(argname), argtype=c_type(argtype))
+                         argname=c_name(argname), argtype=c_type(argtype))
 
     pop_indent()
     return ret.rstrip()
@@ -144,18 +135,18 @@ v = qmp_input_get_visitor(mi);
             ret += mcgen('''
 visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
 ''',
-                         c_name=c_var(argname), name=argname, errp=errparg)
+                         c_name=c_name(argname), name=argname, errp=errparg)
             ret += gen_err_check(errarg)
             ret += mcgen('''
 if (has_%(c_name)s) {
 ''',
-                         c_name=c_var(argname))
+                         c_name=c_name(argname))
             push_indent()
         ret += mcgen('''
-%(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
+visit_type_%(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
 ''',
-                     c_name=c_var(argname), name=argname, argtype=argtype,
-                     visitor=type_visitor(argtype), errp=errparg)
+                     c_name=c_name(argname), name=argname, argtype=argtype,
+                     visitor=type_name(argtype), errp=errparg)
         ret += gen_err_check(errarg)
         if optional:
             pop_indent()
@@ -183,7 +174,7 @@ static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_o
     Visitor *v;
 
     v = qmp_output_get_visitor(mo);
-    %(visitor)s(v, &ret_in, "unused", &local_err);
+    visit_type_%(visitor)s(v, &ret_in, "unused", &local_err);
     if (local_err) {
         goto out;
     }
@@ -194,20 +185,20 @@ out:
     qmp_output_visitor_cleanup(mo);
     md = qapi_dealloc_visitor_new();
     v = qapi_dealloc_get_visitor(md);
-    %(visitor)s(v, &ret_in, "unused", NULL);
+    visit_type_%(visitor)s(v, &ret_in, "unused", NULL);
     qapi_dealloc_visitor_cleanup(md);
 }
 ''',
-                c_ret_type=c_type(ret_type), c_name=c_fun(name),
-                visitor=type_visitor(ret_type))
+                c_ret_type=c_type(ret_type), c_name=c_name(name),
+                visitor=type_name(ret_type))
 
     return ret
 
 def gen_marshal_input_decl(name, args, ret_type, middle_mode):
     if middle_mode:
-        return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_fun(name)
+        return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_name(name)
     else:
-        return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_fun(name)
+        return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
 
 
 
@@ -304,7 +295,7 @@ def gen_registry(commands):
         registry += mcgen('''
 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
 ''',
-                     name=cmd['command'], c_name=c_fun(cmd['command']),
+                     name=cmd['command'], c_name=c_name(cmd['command']),
                      opts=options)
     pop_indent()
     ret = mcgen('''
@@ -318,12 +309,22 @@ qapi_init(qmp_init_marshal);
                 registry=registry.rstrip())
     return ret
 
-def gen_command_decl_prologue(header, guard, prefix=""):
-    ret = mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
+middle_mode = False
+
+(input_file, output_dir, do_c, do_h, prefix, opts) = \
+    parse_command_line("m", ["middle"])
+
+for o, a in opts:
+    if o in ("-m", "--middle"):
+        middle_mode = True
 
+exprs = parse_schema(input_file)
+commands = filter(lambda expr: expr.has_key('command'), exprs)
+commands = filter(lambda expr: not expr.has_key('gen'), commands)
+
+c_comment = '''
 /*
- * schema-defined QAPI function prototypes
+ * schema-defined QMP->QAPI command dispatch
  *
  * Copyright IBM, Corp. 2011
  *
@@ -334,24 +335,10 @@ def gen_command_decl_prologue(header, guard, prefix=""):
  * See the COPYING.LIB file in the top-level directory.
  *
  */
-
-#ifndef %(guard)s
-#define %(guard)s
-
-#include "%(prefix)sqapi-types.h"
-#include "qapi/qmp/qdict.h"
-#include "qapi/error.h"
-
-''',
-                 header=basename(header), guard=guardname(header), prefix=prefix)
-    return ret
-
-def gen_command_def_prologue(prefix="", proxy=False):
-    ret = mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+'''
+h_comment = '''
 /*
- * schema-defined QMP->QAPI command dispatch
+ * schema-defined QAPI function prototypes
  *
  * Copyright IBM, Corp. 2011
  *
@@ -362,7 +349,13 @@ def gen_command_def_prologue(prefix="", proxy=False):
  * See the COPYING.LIB file in the top-level directory.
  *
  */
+'''
+
+(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
+                            'qmp-marshal.c', 'qmp-commands.h',
+                            c_comment, h_comment)
 
+fdef.write(mcgen('''
 #include "qemu-common.h"
 #include "qemu/module.h"
 #include "qapi/qmp/qerror.h"
@@ -374,107 +367,40 @@ def gen_command_def_prologue(prefix="", proxy=False):
 #include "qapi/dealloc-visitor.h"
 #include "%(prefix)sqapi-types.h"
 #include "%(prefix)sqapi-visit.h"
+#include "%(prefix)sqmp-commands.h"
 
 ''',
-                prefix=prefix)
-    if not proxy:
-        ret += '#include "%sqmp-commands.h"' % prefix
-    return ret + "\n\n"
-
-
-try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:i:o:m",
-                                   ["source", "header", "prefix=",
-                                    "input-file=", "output-dir=",
-                                    "type=", "middle"])
-except getopt.GetoptError, err:
-    print str(err)
-    sys.exit(1)
-
-output_dir = ""
-prefix = ""
-dispatch_type = "sync"
-c_file = 'qmp-marshal.c'
-h_file = 'qmp-commands.h'
-middle_mode = False
-
-do_c = False
-do_h = False
-
-for o, a in opts:
-    if o in ("-p", "--prefix"):
-        prefix = a
-    elif o in ("-i", "--input-file"):
-        input_file = a
-    elif o in ("-o", "--output-dir"):
-        output_dir = a + "/"
-    elif o in ("-t", "--type"):
-        dispatch_type = a
-    elif o in ("-m", "--middle"):
-        middle_mode = True
-    elif o in ("-c", "--source"):
-        do_c = True
-    elif o in ("-h", "--header"):
-        do_h = True
-
-if not do_c and not do_h:
-    do_c = True
-    do_h = True
-
-c_file = output_dir + prefix + c_file
-h_file = output_dir + prefix + h_file
+                prefix=prefix))
 
-def maybe_open(really, name, opt):
-    if really:
-        return open(name, opt)
-    else:
-        import StringIO
-        return StringIO.StringIO()
-
-try:
-    os.makedirs(output_dir)
-except os.error, e:
-    if e.errno != errno.EEXIST:
-        raise
-
-exprs = parse_schema(input_file)
-commands = filter(lambda expr: expr.has_key('command'), exprs)
-commands = filter(lambda expr: not expr.has_key('gen'), commands)
+fdecl.write(mcgen('''
+#include "%(prefix)sqapi-types.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/error.h"
 
-if dispatch_type == "sync":
-    fdecl = maybe_open(do_h, h_file, 'w')
-    fdef = maybe_open(do_c, c_file, 'w')
-    ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
+''',
+                 prefix=prefix))
+
+for cmd in commands:
+    arglist = []
+    ret_type = None
+    if cmd.has_key('data'):
+        arglist = cmd['data']
+    if cmd.has_key('returns'):
+        ret_type = cmd['returns']
+    ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
     fdecl.write(ret)
-    ret = gen_command_def_prologue(prefix=prefix)
-    fdef.write(ret)
-
-    for cmd in commands:
-        arglist = []
-        ret_type = None
-        if cmd.has_key('data'):
-            arglist = cmd['data']
-        if cmd.has_key('returns'):
-            ret_type = cmd['returns']
-        ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
-        fdecl.write(ret)
-        if ret_type:
-            ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
-            fdef.write(ret)
-
-        if middle_mode:
-            fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
-
-        ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
+    if ret_type:
+        ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
         fdef.write(ret)
 
-    fdecl.write("\n#endif\n");
+    if middle_mode:
+        fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
 
-    if not middle_mode:
-        ret = gen_registry(commands)
-        fdef.write(ret)
+    ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
+    fdef.write(ret)
+
+if not middle_mode:
+    ret = gen_registry(commands)
+    fdef.write(ret)
 
-    fdef.flush()
-    fdef.close()
-    fdecl.flush()
-    fdecl.close()
+close_output(fdef, fdecl)
diff --git a/scripts/qapi-event.py b/scripts/qapi-event.py
index 47dc041..56bc602 100644
--- a/scripts/qapi-event.py
+++ b/scripts/qapi-event.py
@@ -11,23 +11,19 @@
 
 from ordereddict import OrderedDict
 from qapi import *
-import sys
-import os
-import getopt
-import errno
 
 def _generate_event_api_name(event_name, params):
-    api_name = "void qapi_event_send_%s(" % c_fun(event_name).lower();
+    api_name = "void qapi_event_send_%s(" % c_name(event_name).lower();
     l = len(api_name)
 
     if params:
         for argname, argentry, optional in parse_args(params):
             if optional:
-                api_name += "bool has_%s,\n" % c_var(argname)
+                api_name += "bool has_%s,\n" % c_name(argname)
                 api_name += "".ljust(l)
 
             api_name += "%s %s,\n" % (c_type(argentry, is_param=True),
-                                      c_var(argname))
+                                      c_name(argname))
             api_name += "".ljust(l)
 
     api_name += "Error **errp)"
@@ -98,7 +94,7 @@ def generate_event_implement(api_name, event_name, params):
                 ret += mcgen("""
     if (has_%(var)s) {
 """,
-                             var = c_var(argname))
+                             var = c_name(argname))
                 push_indent()
 
             if argentry == "str":
@@ -113,7 +109,7 @@ def generate_event_implement(api_name, event_name, params):
     }
 """,
                          var_type = var_type,
-                         var = c_var(argname),
+                         var = c_name(argname),
                          type = type_name(argentry),
                          name = argname)
 
@@ -177,7 +173,7 @@ typedef enum %(event_enum_name)s
                       event_enum_name = event_enum_name)
 
     # append automatically generated _MAX value
-    enum_max_value = generate_enum_full_value(event_enum_name, "MAX")
+    enum_max_value = c_enum_const(event_enum_name, "MAX")
     enum_values = event_enum_values + [ enum_max_value ]
 
     i = 0
@@ -216,67 +212,9 @@ const char *%(event_enum_name)s_lookup[] = {
 ''')
     return ret
 
+(input_file, output_dir, do_c, do_h, prefix, dummy) = parse_command_line()
 
-# Start the real job
-
-try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
-                                   ["source", "header", "builtins", "prefix=",
-                                    "input-file=", "output-dir="])
-except getopt.GetoptError, err:
-    print str(err)
-    sys.exit(1)
-
-input_file = ""
-output_dir = ""
-prefix = ""
-c_file = 'qapi-event.c'
-h_file = 'qapi-event.h'
-
-do_c = False
-do_h = False
-do_builtins = False
-
-for o, a in opts:
-    if o in ("-p", "--prefix"):
-        prefix = a
-    elif o in ("-i", "--input-file"):
-        input_file = a
-    elif o in ("-o", "--output-dir"):
-        output_dir = a + "/"
-    elif o in ("-c", "--source"):
-        do_c = True
-    elif o in ("-h", "--header"):
-        do_h = True
-    elif o in ("-b", "--builtins"):
-        do_builtins = True
-
-if not do_c and not do_h:
-    do_c = True
-    do_h = True
-
-c_file = output_dir + prefix + c_file
-h_file = output_dir + prefix + h_file
-
-try:
-    os.makedirs(output_dir)
-except os.error, e:
-    if e.errno != errno.EEXIST:
-        raise
-
-def maybe_open(really, name, opt):
-    if really:
-        return open(name, opt)
-    else:
-        import StringIO
-        return StringIO.StringIO()
-
-fdef = maybe_open(do_c, c_file, 'w')
-fdecl = maybe_open(do_h, h_file, 'w')
-
-fdef.write(mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+c_comment = '''
 /*
  * schema-defined QAPI event functions
  *
@@ -289,19 +227,8 @@ fdef.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
-
-#include "qemu-common.h"
-#include "%(header)s"
-#include "%(prefix)sqapi-visit.h"
-#include "qapi/qmp-output-visitor.h"
-#include "qapi/qmp-event.h"
-
-''',
-                 prefix=prefix, header=basename(h_file)))
-
-fdecl.write(mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+'''
+h_comment = '''
 /*
  * schema-defined QAPI event functions
  *
@@ -314,16 +241,29 @@ fdecl.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
+'''
 
-#ifndef %(guard)s
-#define %(guard)s
+(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
+                            'qapi-event.c', 'qapi-event.h',
+                            c_comment, h_comment)
 
+fdef.write(mcgen('''
+#include "qemu-common.h"
+#include "%(prefix)sqapi-event.h"
+#include "%(prefix)sqapi-visit.h"
+#include "qapi/qmp-output-visitor.h"
+#include "qapi/qmp-event.h"
+
+''',
+                 prefix=prefix))
+
+fdecl.write(mcgen('''
 #include "qapi/error.h"
 #include "qapi/qmp/qdict.h"
 #include "%(prefix)sqapi-types.h"
 
 ''',
-                  prefix=prefix, guard=guardname(h_file)))
+                  prefix=prefix))
 
 exprs = parse_schema(input_file)
 
@@ -343,8 +283,7 @@ for expr in exprs:
         fdecl.write(ret)
 
         # We need an enum value per event
-        event_enum_value = generate_enum_full_value(event_enum_name,
-                                                    event_name)
+        event_enum_value = c_enum_const(event_enum_name, event_name)
         ret = generate_event_implement(api_name, event_name, params)
         fdef.write(ret)
 
@@ -357,12 +296,4 @@ fdecl.write(ret)
 ret = generate_event_enum_lookup(event_enum_name, event_enum_strings)
 fdef.write(ret)
 
-fdecl.write('''
-#endif
-''')
-
-fdecl.flush()
-fdecl.close()
-
-fdef.flush()
-fdef.close()
+close_output(fdef, fdecl)
diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 2bf8145..6bd0b13 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -11,10 +11,6 @@
 
 from ordereddict import OrderedDict
 from qapi import *
-import sys
-import os
-import getopt
-import errno
 
 def generate_fwd_struct(name, members, builtin_type=False):
     if builtin_type:
@@ -45,7 +41,7 @@ typedef struct %(name)sList
     struct %(name)sList *next;
 } %(name)sList;
 ''',
-                 name=name)
+                 name=c_name(name))
 
 def generate_fwd_enum_struct(name, members):
     return mcgen('''
@@ -58,7 +54,7 @@ typedef struct %(name)sList
     struct %(name)sList *next;
 } %(name)sList;
 ''',
-                 name=name)
+                 name=c_name(name))
 
 def generate_struct_fields(members):
     ret = ''
@@ -68,11 +64,11 @@ def generate_struct_fields(members):
             ret += mcgen('''
     bool has_%(c_name)s;
 ''',
-                         c_name=c_var(argname))
+                         c_name=c_name(argname))
         ret += mcgen('''
     %(c_type)s %(c_name)s;
 ''',
-                     c_type=c_type(argentry), c_name=c_var(argname))
+                     c_type=c_type(argentry), c_name=c_name(argname))
 
     return ret
 
@@ -87,7 +83,7 @@ def generate_struct(expr):
 struct %(name)s
 {
 ''',
-          name=structname)
+          name=c_name(structname))
 
     if base:
         ret += generate_struct_fields({'base': base})
@@ -115,16 +111,16 @@ def generate_enum_lookup(name, values):
     ret = mcgen('''
 const char *%(name)s_lookup[] = {
 ''',
-                         name=name)
+                name=c_name(name))
     i = 0
     for value in values:
-        index = generate_enum_full_value(name, value)
+        index = c_enum_const(name, value)
         ret += mcgen('''
     [%(index)s] = "%(value)s",
 ''',
                      index = index, value = value)
 
-    max_index = generate_enum_full_value(name, 'MAX')
+    max_index = c_enum_const(name, 'MAX')
     ret += mcgen('''
     [%(max_index)s] = NULL,
 };
@@ -134,6 +130,7 @@ const char *%(name)s_lookup[] = {
     return ret
 
 def generate_enum(name, values):
+    name = c_name(name)
     lookup_decl = mcgen('''
 extern const char *%(name)s_lookup[];
 ''',
@@ -150,7 +147,7 @@ typedef enum %(name)s
 
     i = 0
     for value in enum_values:
-        enum_full_value = generate_enum_full_value(name, value)
+        enum_full_value = c_enum_const(name, value)
         enum_decl += mcgen('''
     %(enum_full_value)s = %(i)d,
 ''',
@@ -173,18 +170,17 @@ def generate_alternate_qtypes(expr):
     ret = mcgen('''
 const int %(name)s_qtypes[QTYPE_MAX] = {
 ''',
-    name=name)
+                name=c_name(name))
 
     for key in members:
         qtype = find_alternate_member_qtype(members[key])
         assert qtype, "Invalid alternate member"
 
         ret += mcgen('''
-    [ %(qtype)s ] = %(abbrev)s_KIND_%(enum)s,
+    [%(qtype)s] = %(enum_const)s,
 ''',
-        qtype = qtype,
-        abbrev = de_camel_case(name).upper(),
-        enum = c_fun(de_camel_case(key),False).upper())
+                     qtype = qtype,
+                     enum_const = c_enum_const(name + 'Kind', key))
 
     ret += mcgen('''
 };
@@ -194,7 +190,7 @@ const int %(name)s_qtypes[QTYPE_MAX] = {
 
 def generate_union(expr, meta):
 
-    name = expr[meta]
+    name = c_name(expr[meta])
     typeinfo = expr['data']
 
     base = expr.get('base')
@@ -214,14 +210,14 @@ struct %(name)s
         void *data;
 ''',
                 name=name,
-                discriminator_type_name=discriminator_type_name)
+                discriminator_type_name=c_name(discriminator_type_name))
 
     for key in typeinfo:
         ret += mcgen('''
         %(c_type)s %(c_name)s;
 ''',
                      c_type=c_type(typeinfo[key]),
-                     c_name=c_fun(key))
+                     c_name=c_name(key))
 
     ret += mcgen('''
     };
@@ -249,15 +245,15 @@ extern const int %(name)s_qtypes[];
 
 def generate_type_cleanup_decl(name):
     ret = mcgen('''
-void qapi_free_%(type)s(%(c_type)s obj);
+void qapi_free_%(name)s(%(c_type)s obj);
 ''',
-                c_type=c_type(name),type=name)
+                c_type=c_type(name), name=c_name(name))
     return ret
 
 def generate_type_cleanup(name):
     ret = mcgen('''
 
-void qapi_free_%(type)s(%(c_type)s obj)
+void qapi_free_%(name)s(%(c_type)s obj)
 {
     QapiDeallocVisitor *md;
     Visitor *v;
@@ -268,72 +264,23 @@ void qapi_free_%(type)s(%(c_type)s obj)
 
     md = qapi_dealloc_visitor_new();
     v = qapi_dealloc_get_visitor(md);
-    visit_type_%(type)s(v, &obj, NULL, NULL);
+    visit_type_%(name)s(v, &obj, NULL, NULL);
     qapi_dealloc_visitor_cleanup(md);
 }
 ''',
-                c_type=c_type(name),type=name)
+                c_type=c_type(name), name=c_name(name))
     return ret
 
-
-try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
-                                   ["source", "header", "builtins",
-                                    "prefix=", "input-file=", "output-dir="])
-except getopt.GetoptError, err:
-    print str(err)
-    sys.exit(1)
-
-output_dir = ""
-input_file = ""
-prefix = ""
-c_file = 'qapi-types.c'
-h_file = 'qapi-types.h'
-
-do_c = False
-do_h = False
 do_builtins = False
 
+(input_file, output_dir, do_c, do_h, prefix, opts) = \
+    parse_command_line("b", ["builtins"])
+
 for o, a in opts:
-    if o in ("-p", "--prefix"):
-        prefix = a
-    elif o in ("-i", "--input-file"):
-        input_file = a
-    elif o in ("-o", "--output-dir"):
-        output_dir = a + "/"
-    elif o in ("-c", "--source"):
-        do_c = True
-    elif o in ("-h", "--header"):
-        do_h = True
-    elif o in ("-b", "--builtins"):
+    if o in ("-b", "--builtins"):
         do_builtins = True
 
-if not do_c and not do_h:
-    do_c = True
-    do_h = True
-
-c_file = output_dir + prefix + c_file
-h_file = output_dir + prefix + h_file
-
-try:
-    os.makedirs(output_dir)
-except os.error, e:
-    if e.errno != errno.EEXIST:
-        raise
-
-def maybe_open(really, name, opt):
-    if really:
-        return open(name, opt)
-    else:
-        import StringIO
-        return StringIO.StringIO()
-
-fdef = maybe_open(do_c, c_file, 'w')
-fdecl = maybe_open(do_h, h_file, 'w')
-
-fdef.write(mcgen('''
-/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+c_comment = '''
 /*
  * deallocation functions for schema-defined QAPI types
  *
@@ -347,16 +294,8 @@ fdef.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
-
-#include "qapi/dealloc-visitor.h"
-#include "%(prefix)sqapi-types.h"
-#include "%(prefix)sqapi-visit.h"
-
-''',             prefix=prefix))
-
-fdecl.write(mcgen('''
-/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+'''
+h_comment = '''
 /*
  * schema-defined QAPI types
  *
@@ -369,15 +308,25 @@ fdecl.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
+'''
 
-#ifndef %(guard)s
-#define %(guard)s
+(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
+                            'qapi-types.c', 'qapi-types.h',
+                            c_comment, h_comment)
 
+fdef.write(mcgen('''
+#include "qapi/dealloc-visitor.h"
+#include "%(prefix)sqapi-types.h"
+#include "%(prefix)sqapi-visit.h"
+
+''',
+                 prefix=prefix))
+
+fdecl.write(mcgen('''
 #include <stdbool.h>
 #include <stdint.h>
 
-''',
-                  guard=guardname(h_file)))
+'''))
 
 exprs = parse_schema(input_file)
 exprs = filter(lambda expr: not expr.has_key('gen'), exprs)
@@ -455,12 +404,4 @@ for expr in exprs:
         continue
     fdecl.write(ret)
 
-fdecl.write('''
-#endif
-''')
-
-fdecl.flush()
-fdecl.close()
-
-fdef.flush()
-fdef.close()
+close_output(fdef, fdecl)
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 0e67b33..5b99336 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -15,10 +15,6 @@
 from ordereddict import OrderedDict
 from qapi import *
 import re
-import sys
-import os
-import getopt
-import errno
 
 implicit_structs = []
 
@@ -56,7 +52,7 @@ static void visit_type_%(name)s_fields(Visitor *m, %(name)s **obj, Error **errp)
 {
     Error *err = NULL;
 ''',
-                 name=name)
+                 name=c_name(name))
     push_indent()
 
     if base:
@@ -66,7 +62,7 @@ if (err) {
     goto out;
 }
 ''',
-                     type=type_name(base), c_name=c_var('base'))
+                     type=type_name(base), c_name=c_name('base'))
 
     for argname, argentry, optional in parse_args(members):
         if optional:
@@ -74,13 +70,13 @@ if (err) {
 visit_optional(m, &(*obj)->has_%(c_name)s, "%(name)s", &err);
 if (!err && (*obj)->has_%(c_name)s) {
 ''',
-                         c_name=c_var(argname), name=argname)
+                         c_name=c_name(argname), name=argname)
             push_indent()
 
         ret += mcgen('''
 visit_type_%(type)s(m, &(*obj)->%(c_name)s, "%(name)s", &err);
 ''',
-                     type=type_name(argentry), c_name=c_var(argname),
+                     type=type_name(argentry), c_name=c_name(argname),
                      name=argname)
 
         if optional:
@@ -111,16 +107,16 @@ def generate_visit_struct_body(name, members):
     ret = mcgen('''
     Error *err = NULL;
 
-    visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), &err);
+    visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(c_name)s), &err);
     if (!err) {
         if (*obj) {
-            visit_type_%(name)s_fields(m, obj, errp);
+            visit_type_%(c_name)s_fields(m, obj, errp);
         }
         visit_end_struct(m, &err);
     }
     error_propagate(errp, err);
 ''',
-                name=name)
+                name=name, c_name=c_name(name))
 
     return ret
 
@@ -137,7 +133,7 @@ def generate_visit_struct(expr):
 void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **errp)
 {
 ''',
-                name=name)
+                 name=c_name(name))
 
     ret += generate_visit_struct_body(name, members)
 
@@ -173,7 +169,7 @@ out:
     error_propagate(errp, err);
 }
 ''',
-                name=name)
+                name=type_name(name))
 
 def generate_visit_enum(name, members):
     return mcgen('''
@@ -183,7 +179,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s *obj, const char *name, Error **er
     visit_type_enum(m, (int *)obj, %(name)s_lookup, "%(name)s", name, errp);
 }
 ''',
-                 name=name)
+                 name=c_name(name))
 
 def generate_visit_alternate(name, members):
     ret = mcgen('''
@@ -202,11 +198,11 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
     }
     switch ((*obj)->kind) {
 ''',
-    name=name)
+                name=c_name(name))
 
     # For alternate, always use the default enum type automatically generated
-    # as "'%sKind' % (name)"
-    disc_type = '%sKind' % (name)
+    # as name + 'Kind'
+    disc_type = c_name(name) + 'Kind'
 
     for key in members:
         assert (members[key] in builtin_types.keys()
@@ -214,7 +210,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
             or find_union(members[key])
             or find_enum(members[key])), "Invalid alternate member"
 
-        enum_full_value = generate_enum_full_value(disc_type, key)
+        enum_full_value = c_enum_const(disc_type, key)
         ret += mcgen('''
     case %(enum_full_value)s:
         visit_type_%(c_type)s(m, &(*obj)->%(c_name)s, name, &err);
@@ -222,7 +218,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
 ''',
                 enum_full_value = enum_full_value,
                 c_type = type_name(members[key]),
-                c_name = c_fun(key))
+                c_name = c_name(key))
 
     ret += mcgen('''
     default:
@@ -252,12 +248,12 @@ def generate_visit_union(expr):
     if enum_define:
         # Use the enum type as discriminator
         ret = ""
-        disc_type = enum_define['enum_name']
+        disc_type = c_name(enum_define['enum_name'])
     else:
         # There will always be a discriminator in the C switch code, by default
-        # it is an enum type generated silently as "'%sKind' % (name)"
-        ret = generate_visit_enum('%sKind' % name, members.keys())
-        disc_type = '%sKind' % (name)
+        # it is an enum type generated silently
+        ret = generate_visit_enum(name + 'Kind', members.keys())
+        disc_type = c_name(name) + 'Kind'
 
     if base:
         assert discriminator
@@ -281,7 +277,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
     }
     if (*obj) {
 ''',
-                 name=name)
+                 name=c_name(name))
 
     if base:
         ret += mcgen('''
@@ -290,7 +286,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
             goto out_obj;
         }
 ''',
-            name=name)
+                     name=c_name(name))
 
     if not discriminator:
         disc_key = "type"
@@ -315,7 +311,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
         else:
             fmt = 'visit_type_implicit_%(c_type)s(m, &(*obj)->%(c_name)s, &err);'
 
-        enum_full_value = generate_enum_full_value(disc_type, key)
+        enum_full_value = c_enum_const(disc_type, key)
         ret += mcgen('''
         case %(enum_full_value)s:
             ''' + fmt + '''
@@ -323,7 +319,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
 ''',
                 enum_full_value = enum_full_value,
                 c_type=type_name(members[key]),
-                c_name=c_fun(key))
+                c_name=c_name(key))
 
     ret += mcgen('''
         default:
@@ -347,6 +343,7 @@ out:
 def generate_declaration(name, members, builtin_type=False):
     ret = ""
     if not builtin_type:
+        name = c_name(name)
         ret += mcgen('''
 
 void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **errp);
@@ -364,7 +361,7 @@ def generate_enum_declaration(name, members):
     ret = mcgen('''
 void visit_type_%(name)sList(Visitor *m, %(name)sList **obj, const char *name, Error **errp);
 ''',
-                name=name)
+                name=c_name(name))
 
     return ret
 
@@ -373,66 +370,18 @@ def generate_decl_enum(name, members):
 
 void visit_type_%(name)s(Visitor *m, %(name)s *obj, const char *name, Error **errp);
 ''',
-                name=name)
-
-try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
-                                   ["source", "header", "builtins", "prefix=",
-                                    "input-file=", "output-dir="])
-except getopt.GetoptError, err:
-    print str(err)
-    sys.exit(1)
-
-input_file = ""
-output_dir = ""
-prefix = ""
-c_file = 'qapi-visit.c'
-h_file = 'qapi-visit.h'
-
-do_c = False
-do_h = False
+                 name=c_name(name))
+
 do_builtins = False
 
+(input_file, output_dir, do_c, do_h, prefix, opts) = \
+    parse_command_line("b", ["builtins"])
+
 for o, a in opts:
-    if o in ("-p", "--prefix"):
-        prefix = a
-    elif o in ("-i", "--input-file"):
-        input_file = a
-    elif o in ("-o", "--output-dir"):
-        output_dir = a + "/"
-    elif o in ("-c", "--source"):
-        do_c = True
-    elif o in ("-h", "--header"):
-        do_h = True
-    elif o in ("-b", "--builtins"):
+    if o in ("-b", "--builtins"):
         do_builtins = True
 
-if not do_c and not do_h:
-    do_c = True
-    do_h = True
-
-c_file = output_dir + prefix + c_file
-h_file = output_dir + prefix + h_file
-
-try:
-    os.makedirs(output_dir)
-except os.error, e:
-    if e.errno != errno.EEXIST:
-        raise
-
-def maybe_open(really, name, opt):
-    if really:
-        return open(name, opt)
-    else:
-        import StringIO
-        return StringIO.StringIO()
-
-fdef = maybe_open(do_c, c_file, 'w')
-fdecl = maybe_open(do_h, h_file, 'w')
-
-fdef.write(mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+c_comment = '''
 /*
  * schema-defined QAPI visitor functions
  *
@@ -445,15 +394,8 @@ fdef.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
-
-#include "qemu-common.h"
-#include "%(header)s"
-''',
-                 header=basename(h_file)))
-
-fdecl.write(mcgen('''
-/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+'''
+h_comment = '''
 /*
  * schema-defined QAPI visitor functions
  *
@@ -466,15 +408,24 @@ fdecl.write(mcgen('''
  * See the COPYING.LIB file in the top-level directory.
  *
  */
+'''
+
+(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
+                            'qapi-visit.c', 'qapi-visit.h',
+                            c_comment, h_comment)
 
-#ifndef %(guard)s
-#define %(guard)s
+fdef.write(mcgen('''
+#include "qemu-common.h"
+#include "%(prefix)sqapi-visit.h"
+''',
+                 prefix = prefix))
 
+fdecl.write(mcgen('''
 #include "qapi/visitor.h"
 #include "%(prefix)sqapi-types.h"
 
 ''',
-                  prefix=prefix, guard=guardname(h_file)))
+                  prefix=prefix))
 
 exprs = parse_schema(input_file)
 
@@ -530,12 +481,4 @@ for expr in exprs:
         ret += generate_enum_declaration(expr['enum'], expr['data'])
         fdecl.write(ret)
 
-fdecl.write('''
-#endif
-''')
-
-fdecl.flush()
-fdecl.close()
-
-fdef.flush()
-fdef.close()
+close_output(fdef, fdecl)
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 166b74f..f96a777 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -13,8 +13,11 @@
 
 import re
 from ordereddict import OrderedDict
+import errno
+import getopt
 import os
 import sys
+import string
 
 builtin_types = {
     'str':      'QTYPE_QSTRING',
@@ -537,7 +540,7 @@ def check_union(expr, expr_info):
 
         # Otherwise, check for conflicts in the generated enum
         else:
-            c_key = _generate_enum_string(key)
+            c_key = camel_to_upper(key)
             if c_key in values:
                 raise QAPIExprError(expr_info,
                                     "Union '%s' member '%s' clashes with '%s'"
@@ -555,7 +558,7 @@ def check_alternate(expr, expr_info):
         check_name(expr_info, "Member of alternate '%s'" % name, key)
 
         # Check for conflicts in the generated enum
-        c_key = _generate_enum_string(key)
+        c_key = camel_to_upper(key)
         if c_key in values:
             raise QAPIExprError(expr_info,
                                 "Alternate '%s' member '%s' clashes with '%s'"
@@ -586,7 +589,7 @@ def check_enum(expr, expr_info):
     for member in members:
         check_name(expr_info, "Member of enum '%s'" %name, member,
                    enum_member=True)
-        key = _generate_enum_string(member)
+        key = camel_to_upper(member)
         if key in values:
             raise QAPIExprError(expr_info,
                                 "Enum '%s' member '%s' clashes with '%s'"
@@ -728,17 +731,6 @@ def parse_args(typeinfo):
         # value of an optional argument.
         yield (argname, argentry, optional)
 
-def de_camel_case(name):
-    new_name = ''
-    for ch in name:
-        if ch.isupper() and new_name:
-            new_name += '_'
-        if ch == '-':
-            new_name += '_'
-        else:
-            new_name += ch.lower()
-    return new_name
-
 def camel_case(name):
     new_name = ''
     first = True
@@ -752,7 +744,43 @@ def camel_case(name):
             new_name += ch.lower()
     return new_name
 
-def c_var(name, protect=True):
+# ENUMName -> ENUM_NAME, EnumName1 -> ENUM_NAME1
+# ENUM_NAME -> ENUM_NAME, ENUM_NAME1 -> ENUM_NAME1, ENUM_Name2 -> ENUM_NAME2
+# ENUM24_Name -> ENUM24_NAME
+def camel_to_upper(value):
+    c_fun_str = c_name(value, False)
+    if value.isupper():
+        return c_fun_str
+
+    new_name = ''
+    l = len(c_fun_str)
+    for i in range(l):
+        c = c_fun_str[i]
+        # When c is upper and no "_" appears before, do more checks
+        if c.isupper() and (i > 0) and c_fun_str[i - 1] != "_":
+            # Case 1: next string is lower
+            # Case 2: previous string is digit
+            if (i < (l - 1) and c_fun_str[i + 1].islower()) or \
+            c_fun_str[i - 1].isdigit():
+                new_name += '_'
+        new_name += c
+    return new_name.lstrip('_').upper()
+
+def c_enum_const(type_name, const_name):
+    return camel_to_upper(type_name + '_' + const_name)
+
+c_name_trans = string.maketrans('.-', '__')
+
+# Map @name to a valid C identifier.
+# If @protect, avoid returning certain ticklish identifiers (like
+# C keywords) by prepending "q_".
+#
+# Used for converting 'name' from a 'name':'type' qapi definition
+# into a generated struct member, as well as converting type names
+# into substrings of a generated C function name.
+# '__a.b_c' -> '__a_b_c', 'x-foo' -> 'x_foo'
+# protect=True: 'int' -> 'q_int'; protect=False: 'int' -> 'int'
+def c_name(name, protect=True):
     # ANSI X3J11/88-090, 3.1.1
     c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue',
                      'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
@@ -781,18 +809,27 @@ def c_var(name, protect=True):
     polluted_words = set(['unix', 'errno'])
     if protect and (name in c89_words | c99_words | c11_words | gcc_words | cpp_words | polluted_words):
         return "q_" + name
-    return name.replace('-', '_').lstrip("*")
-
-def c_fun(name, protect=True):
-    return c_var(name, protect).replace('.', '_')
+    return name.translate(c_name_trans)
 
+# Map type @name to the C typedef name for the list form.
+#
+# ['Name'] -> 'NameList', ['x-Foo'] -> 'x_FooList', ['int'] -> 'intList'
 def c_list_type(name):
-    return '%sList' % name
+    return type_name(name) + 'List'
 
-def type_name(name):
-    if type(name) == list:
-        return c_list_type(name[0])
-    return name
+# Map type @value to the C typedef form.
+#
+# Used for converting 'type' from a 'member':'type' qapi definition
+# into the alphanumeric portion of the type for a generated C parameter,
+# as well as generated C function names.  See c_type() for the rest of
+# the conversion such as adding '*' on pointer types.
+# 'int' -> 'int', '[x-Foo]' -> 'x_FooList', '__a.b_c' -> '__a_b_c'
+def type_name(value):
+    if type(value) == list:
+        return c_list_type(value[0])
+    if value in builtin_types.keys():
+        return value
+    return c_name(value)
 
 def add_name(name, info, meta, implicit = False):
     global all_names
@@ -849,42 +886,48 @@ def is_enum(name):
     return find_enum(name) != None
 
 eatspace = '\033EATSPACE.'
+pointer_suffix = ' *' + eatspace
 
+# Map type @name to its C type expression.
+# If @is_param, const-qualify the string type.
+#
+# This function is used for computing the full C type of 'member':'name'.
 # A special suffix is added in c_type() for pointer types, and it's
 # stripped in mcgen(). So please notice this when you check the return
 # value of c_type() outside mcgen().
-def c_type(name, is_param=False):
-    if name == 'str':
+def c_type(value, is_param=False):
+    if value == 'str':
         if is_param:
-            return 'const char *' + eatspace
-        return 'char *' + eatspace
+            return 'const char' + pointer_suffix
+        return 'char' + pointer_suffix
 
-    elif name == 'int':
+    elif value == 'int':
         return 'int64_t'
-    elif (name == 'int8' or name == 'int16' or name == 'int32' or
-          name == 'int64' or name == 'uint8' or name == 'uint16' or
-          name == 'uint32' or name == 'uint64'):
-        return name + '_t'
-    elif name == 'size':
+    elif (value == 'int8' or value == 'int16' or value == 'int32' or
+          value == 'int64' or value == 'uint8' or value == 'uint16' or
+          value == 'uint32' or value == 'uint64'):
+        return value + '_t'
+    elif value == 'size':
         return 'uint64_t'
-    elif name == 'bool':
+    elif value == 'bool':
         return 'bool'
-    elif name == 'number':
+    elif value == 'number':
         return 'double'
-    elif type(name) == list:
-        return '%s *%s' % (c_list_type(name[0]), eatspace)
-    elif is_enum(name):
-        return name
-    elif name == None or len(name) == 0:
+    elif type(value) == list:
+        return c_list_type(value[0]) + pointer_suffix
+    elif is_enum(value):
+        return c_name(value)
+    elif value == None:
         return 'void'
-    elif name in events:
-        return '%sEvent *%s' % (camel_case(name), eatspace)
+    elif value in events:
+        return camel_case(value) + 'Event' + pointer_suffix
     else:
-        return '%s *%s' % (name, eatspace)
+        # complex type name
+        assert isinstance(value, str) and value != ""
+        return c_name(value) + pointer_suffix
 
-def is_c_ptr(name):
-    suffix = "*" + eatspace
-    return c_type(name).endswith(suffix)
+def is_c_ptr(value):
+    return c_type(value).endswith(pointer_suffix)
 
 def genindent(count):
     ret = ""
@@ -938,29 +981,88 @@ def guardend(name):
 ''',
                  name=guardname(name))
 
-# ENUMName -> ENUM_NAME, EnumName1 -> ENUM_NAME1
-# ENUM_NAME -> ENUM_NAME, ENUM_NAME1 -> ENUM_NAME1, ENUM_Name2 -> ENUM_NAME2
-# ENUM24_Name -> ENUM24_NAME
-def _generate_enum_string(value):
-    c_fun_str = c_fun(value, False)
-    if value.isupper():
-        return c_fun_str
+def parse_command_line(extra_options = "", extra_long_options = []):
 
-    new_name = ''
-    l = len(c_fun_str)
-    for i in range(l):
-        c = c_fun_str[i]
-        # When c is upper and no "_" appears before, do more checks
-        if c.isupper() and (i > 0) and c_fun_str[i - 1] != "_":
-            # Case 1: next string is lower
-            # Case 2: previous string is digit
-            if (i < (l - 1) and c_fun_str[i + 1].islower()) or \
-            c_fun_str[i - 1].isdigit():
-                new_name += '_'
-        new_name += c
-    return new_name.lstrip('_').upper()
+    try:
+        opts, args = getopt.gnu_getopt(sys.argv[1:],
+                                       "chp:o:" + extra_options,
+                                       ["source", "header", "prefix=",
+                                        "output-dir="] + extra_long_options)
+    except getopt.GetoptError, err:
+        print >>sys.stderr, "%s: %s" % (sys.argv[0], str(err))
+        sys.exit(1)
+
+    output_dir = ""
+    prefix = ""
+    do_c = False
+    do_h = False
+    extra_opts = []
+
+    for oa in opts:
+        o, a = oa
+        if o in ("-p", "--prefix"):
+            prefix = a
+        elif o in ("-o", "--output-dir"):
+            output_dir = a + "/"
+        elif o in ("-c", "--source"):
+            do_c = True
+        elif o in ("-h", "--header"):
+            do_h = True
+        else:
+            extra_opts.append(oa)
+
+    if not do_c and not do_h:
+        do_c = True
+        do_h = True
+
+    if len(args) != 1:
+        print >>sys.stderr, "%s: need exactly one argument" % sys.argv[0]
+        sys.exit(1)
+    input_file = args[0]
+
+    return (input_file, output_dir, do_c, do_h, prefix, extra_opts)
+
+def open_output(output_dir, do_c, do_h, prefix, c_file, h_file,
+                c_comment, h_comment):
+    c_file = output_dir + prefix + c_file
+    h_file = output_dir + prefix + h_file
+
+    try:
+        os.makedirs(output_dir)
+    except os.error, e:
+        if e.errno != errno.EEXIST:
+            raise
+
+    def maybe_open(really, name, opt):
+        if really:
+            return open(name, opt)
+        else:
+            import StringIO
+            return StringIO.StringIO()
+
+    fdef = maybe_open(do_c, c_file, 'w')
+    fdecl = maybe_open(do_h, h_file, 'w')
+
+    fdef.write(mcgen('''
+/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
+%(comment)s
+''',
+                     comment = c_comment))
+
+    fdecl.write(mcgen('''
+/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
+%(comment)s
+#ifndef %(guard)s
+#define %(guard)s
+
+''',
+                      comment = h_comment, guard = guardname(h_file)))
+
+    return (fdef, fdecl)
 
-def generate_enum_full_value(enum_name, enum_value):
-    abbrev_string = _generate_enum_string(enum_name)
-    value_string = _generate_enum_string(enum_value)
-    return "%s_%s" % (abbrev_string, value_string)
+def close_output(fdef, fdecl):
+    fdecl.write('''
+#endif
+''')
+    fdecl.close()
+    fdef.close()
diff --git a/tests/Makefile b/tests/Makefile
index 666aee2..729b969 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -301,24 +301,24 @@ tests/test-vmstate$(EXESUF): tests/test-vmstate.o \
 	libqemuutil.a libqemustub.a
 
 tests/test-qapi-types.c tests/test-qapi-types.h :\
-$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py
+$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o tests -p "test-" -i $<, \
+		$(gen-out-type) -o tests -p "test-" $<, \
 		"  GEN   $@")
 tests/test-qapi-visit.c tests/test-qapi-visit.h :\
-$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-visit.py
+$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o tests -p "test-" -i $<, \
+		$(gen-out-type) -o tests -p "test-" $<, \
 		"  GEN   $@")
 tests/test-qmp-commands.h tests/test-qmp-marshal.c :\
-$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-commands.py
+$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o tests -p "test-" -i $<, \
+		$(gen-out-type) -o tests -p "test-" $<, \
 		"  GEN   $@")
 tests/test-qapi-event.c tests/test-qapi-event.h :\
-$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-event.py
+$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-event.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-event.py \
-		$(gen-out-type) -o tests -p "test-" -i $<, \
+		$(gen-out-type) -o tests -p "test-" $<, \
 		"  GEN   $@")
 
 tests/test-string-output-visitor$(EXESUF): tests/test-string-output-visitor.o $(test-qapi-obj-y) libqemuutil.a libqemustub.a
diff --git a/tests/qapi-schema/qapi-schema-test.json b/tests/qapi-schema/qapi-schema-test.json
index 8193dc1..c7eaa86 100644
--- a/tests/qapi-schema/qapi-schema-test.json
+++ b/tests/qapi-schema/qapi-schema-test.json
@@ -107,3 +107,23 @@
   'data': { '*a': 'int', '*b': 'UserDefOne', 'c': 'str' } }
 { 'event': 'EVENT_D',
   'data': { 'a' : 'EventStructOne', 'b' : 'str', '*c': 'str', '*enum3': 'EnumOne' } }
+
+# test that we correctly compile downstream extensions
+{ 'enum': '__org.qemu_x-Enum', 'data': [ '__org.qemu_x-value' ] }
+{ 'struct': '__org.qemu_x-Base',
+  'data': { '__org.qemu_x-member1': '__org.qemu_x-Enum' } }
+{ 'struct': '__org.qemu_x-Struct', 'base': '__org.qemu_x-Base',
+  'data': { '__org.qemu_x-member2': 'str' } }
+{ 'union': '__org.qemu_x-Union1', 'data': { '__org.qemu_x-branch': 'str' } }
+{ 'struct': '__org.qemu_x-Struct2',
+  'data': { 'array': ['__org.qemu_x-Union1'] } }
+{ 'union': '__org.qemu_x-Union2', 'base': '__org.qemu_x-Base',
+  'discriminator': '__org.qemu_x-member1',
+  'data': { '__org.qemu_x-value': '__org.qemu_x-Struct2' } }
+{ 'alternate': '__org.qemu_x-Alt',
+  'data': { '__org.qemu_x-branch': 'str', 'b': '__org.qemu_x-Base' } }
+{ 'event': '__ORG.QEMU_X-EVENT', 'data': '__org.qemu_x-Struct' }
+{ 'command': '__org.qemu_x-command',
+  'data': { 'a': ['__org.qemu_x-Enum'], 'b': ['__org.qemu_x-Struct'],
+            'c': '__org.qemu_x-Union2', 'd': '__org.qemu_x-Alt' },
+  'returns': '__org.qemu_x-Union1' }
diff --git a/tests/qapi-schema/qapi-schema-test.out b/tests/qapi-schema/qapi-schema-test.out
index 93c4963..cf0ccc4 100644
--- a/tests/qapi-schema/qapi-schema-test.out
+++ b/tests/qapi-schema/qapi-schema-test.out
@@ -22,10 +22,22 @@
  OrderedDict([('event', 'EVENT_A')]),
  OrderedDict([('event', 'EVENT_B'), ('data', OrderedDict())]),
  OrderedDict([('event', 'EVENT_C'), ('data', OrderedDict([('*a', 'int'), ('*b', 'UserDefOne'), ('c', 'str')]))]),
- OrderedDict([('event', 'EVENT_D'), ('data', OrderedDict([('a', 'EventStructOne'), ('b', 'str'), ('*c', 'str'), ('*enum3', 'EnumOne')]))])]
+ OrderedDict([('event', 'EVENT_D'), ('data', OrderedDict([('a', 'EventStructOne'), ('b', 'str'), ('*c', 'str'), ('*enum3', 'EnumOne')]))]),
+ OrderedDict([('enum', '__org.qemu_x-Enum'), ('data', ['__org.qemu_x-value'])]),
+ OrderedDict([('struct', '__org.qemu_x-Base'), ('data', OrderedDict([('__org.qemu_x-member1', '__org.qemu_x-Enum')]))]),
+ OrderedDict([('struct', '__org.qemu_x-Struct'), ('base', '__org.qemu_x-Base'), ('data', OrderedDict([('__org.qemu_x-member2', 'str')]))]),
+ OrderedDict([('union', '__org.qemu_x-Union1'), ('data', OrderedDict([('__org.qemu_x-branch', 'str')]))]),
+ OrderedDict([('struct', '__org.qemu_x-Struct2'), ('data', OrderedDict([('array', ['__org.qemu_x-Union1'])]))]),
+ OrderedDict([('union', '__org.qemu_x-Union2'), ('base', '__org.qemu_x-Base'), ('discriminator', '__org.qemu_x-member1'), ('data', OrderedDict([('__org.qemu_x-value', '__org.qemu_x-Struct2')]))]),
+ OrderedDict([('alternate', '__org.qemu_x-Alt'), ('data', OrderedDict([('__org.qemu_x-branch', 'str'), ('b', '__org.qemu_x-Base')]))]),
+ OrderedDict([('event', '__ORG.QEMU_X-EVENT'), ('data', '__org.qemu_x-Struct')]),
+ OrderedDict([('command', '__org.qemu_x-command'), ('data', OrderedDict([('a', ['__org.qemu_x-Enum']), ('b', ['__org.qemu_x-Struct']), ('c', '__org.qemu_x-Union2'), ('d', '__org.qemu_x-Alt')])), ('returns', '__org.qemu_x-Union1')])]
 [{'enum_name': 'EnumOne', 'enum_values': ['value1', 'value2', 'value3']},
+ {'enum_name': '__org.qemu_x-Enum', 'enum_values': ['__org.qemu_x-value']},
  {'enum_name': 'UserDefAlternateKind', 'enum_values': None},
- {'enum_name': 'UserDefNativeListUnionKind', 'enum_values': None}]
+ {'enum_name': 'UserDefNativeListUnionKind', 'enum_values': None},
+ {'enum_name': '__org.qemu_x-Union1Kind', 'enum_values': None},
+ {'enum_name': '__org.qemu_x-AltKind', 'enum_values': None}]
 [OrderedDict([('struct', 'NestedEnumsOne'), ('data', OrderedDict([('enum1', 'EnumOne'), ('*enum2', 'EnumOne'), ('enum3', 'EnumOne'), ('*enum4', 'EnumOne')]))]),
  OrderedDict([('struct', 'UserDefZero'), ('data', OrderedDict([('integer', 'int')]))]),
  OrderedDict([('struct', 'UserDefOne'), ('base', 'UserDefZero'), ('data', OrderedDict([('string', 'str'), ('*enum1', 'EnumOne')]))]),
@@ -37,4 +49,7 @@
  OrderedDict([('struct', 'UserDefC'), ('data', OrderedDict([('string1', 'str'), ('string2', 'str')]))]),
  OrderedDict([('struct', 'UserDefUnionBase'), ('data', OrderedDict([('string', 'str'), ('enum1', 'EnumOne')]))]),
  OrderedDict([('struct', 'UserDefOptions'), ('data', OrderedDict([('*i64', ['int']), ('*u64', ['uint64']), ('*u16', ['uint16']), ('*i64x', 'int'), ('*u64x', 'uint64')]))]),
- OrderedDict([('struct', 'EventStructOne'), ('data', OrderedDict([('struct1', 'UserDefOne'), ('string', 'str'), ('*enum2', 'EnumOne')]))])]
+ OrderedDict([('struct', 'EventStructOne'), ('data', OrderedDict([('struct1', 'UserDefOne'), ('string', 'str'), ('*enum2', 'EnumOne')]))]),
+ OrderedDict([('struct', '__org.qemu_x-Base'), ('data', OrderedDict([('__org.qemu_x-member1', '__org.qemu_x-Enum')]))]),
+ OrderedDict([('struct', '__org.qemu_x-Struct'), ('base', '__org.qemu_x-Base'), ('data', OrderedDict([('__org.qemu_x-member2', 'str')]))]),
+ OrderedDict([('struct', '__org.qemu_x-Struct2'), ('data', OrderedDict([('array', ['__org.qemu_x-Union1'])]))])]
diff --git a/tests/test-qmp-commands.c b/tests/test-qmp-commands.c
index ad2e403..9918f23 100644
--- a/tests/test-qmp-commands.c
+++ b/tests/test-qmp-commands.c
@@ -51,6 +51,21 @@ int64_t qmp_user_def_cmd3(int64_t a, bool has_b, int64_t b, Error **errp)
     return a + (has_b ? b : 0);
 }
 
+__org_qemu_x_Union1 *qmp___org_qemu_x_command(__org_qemu_x_EnumList *a,
+                                              __org_qemu_x_StructList *b,
+                                              __org_qemu_x_Union2 *c,
+                                              __org_qemu_x_Alt *d,
+                                              Error **errp)
+{
+    __org_qemu_x_Union1 *ret = g_new0(__org_qemu_x_Union1, 1);
+
+    ret->kind = ORG_QEMU_X_UNION1_KIND___ORG_QEMU_X_BRANCH;
+    ret->__org_qemu_x_branch = strdup("blah1");
+
+    return ret;
+}
+
+
 /* test commands with no input and no return value */
 static void test_dispatch_cmd(void)
 {