Improved the packet dumper to escape the response string before sending it to the response functions (find any 0x7d characters and remove it and XOR the next character with 0x20). This allows us to parse the JSON in the reply packet and display it correctly.

llvm-svn: 242928

lldb/examples/python/gdbremote.py

@@ -18,6 +18,7 @@
 
 import binascii
 import commands
+import json
 import math
 import optparse
 import os
@@ -535,13 +536,13 @@ def rsp_stop_reply(options, cmd, cmd_args, rsp):
             elif key == 'jthreads' or key == 'jstopinfo':
                 key_value_pair[1] = binascii.unhexlify(key_value_pair[1])
         key_value_pairs.insert(0, ['signal', signo])
-        print 'Stop reply:'
+        print 'stop_reply():'
         dump_key_value_pairs (key_value_pairs)
     elif stop_type == 'W':
         exit_status = packet.get_hex_uint8()
-        print 'exit (status=%i)' % exit_status
+        print 'stop_reply(): exit (status=%i)' % exit_status
     elif stop_type == 'O':
-        print 'stdout = %s' % packet.str
+        print 'stop_reply(): stdout = "%s"' % packet.str
         
 
 def cmd_unknown_packet(options, cmd, args):
@@ -1031,6 +1032,42 @@ def cmd_kill(options, cmd, args):
     print 'kill_process()'
     return False
 
+def cmd_jThreadsInfo(options, cmd, args):
+    print 'jThreadsInfo()'
+    return False
+    
+def cmd_jGetLoadedDynamicLibrariesInfos(options, cmd, args):
+    print 'jGetLoadedDynamicLibrariesInfos()'
+    return False
+
+def decode_packet(s, start_index = 0):
+    #print '\ndecode_packet("%s")' % (s[start_index:])
+    index = s.find('}', start_index)
+    have_escapes = index != -1
+    if have_escapes:
+        normal_s = s[start_index:index]
+    else:
+        normal_s = s[start_index:]
+    #print 'normal_s = "%s"' % (normal_s)
+    if have_escapes:
+        escape_char = '%c' % (ord(s[index+1]) ^ 0x20)
+        #print 'escape_char for "%s" = %c' % (s[index:index+2], escape_char)
+        return normal_s + escape_char + decode_packet(s, index+2)
+    else:
+        return normal_s
+
+def rsp_json(options, cmd, cmd_args, rsp):
+    print '%s() reply:' % (cmd)
+    json_tree = json.loads(rsp)
+    print json.dumps(json_tree, indent=4, separators=(',', ': '))
+    
+        
+def rsp_jGetLoadedDynamicLibrariesInfos(options, cmd, cmd_args, rsp):
+    if cmd_args:
+        rsp_json(options, cmd, cmd_args, rsp)
+    else:
+        rsp_ok_means_supported(options, cmd, cmd_args, rsp)
+    
 gdb_remote_commands = {
     '\\?'                     : { 'cmd' : cmd_stop_reply        , 'rsp' : rsp_stop_reply          , 'name' : "stop reply pacpket"},
     'qThreadStopInfo'         : { 'cmd' : cmd_qThreadStopInfo   , 'rsp' : rsp_stop_reply          , 'name' : "stop reply pacpket"},
@@ -1071,6 +1108,8 @@ gdb_remote_commands = {
     'z'                       : { 'cmd' : cmd_bp                , 'rsp' : rsp_ok_means_success    , 'name' : "clear breakpoint or watchpoint" },
     'Z'                       : { 'cmd' : cmd_bp                , 'rsp' : rsp_ok_means_success    , 'name' : "set breakpoint or watchpoint" },
     'k'                       : { 'cmd' : cmd_kill              , 'rsp' : rsp_stop_reply          , 'name' : "kill process" },
+    'jThreadsInfo'            : { 'cmd' : cmd_jThreadsInfo      , 'rsp' : rsp_json                , 'name' : "JSON get all threads info" },
+    'jGetLoadedDynamicLibrariesInfos:' : { 'cmd' : cmd_jGetLoadedDynamicLibrariesInfos, 'rsp' : rsp_jGetLoadedDynamicLibrariesInfos, 'name' : 'JSON get loaded dynamic libraries' },
 }
 
 def calculate_mean_and_standard_deviation(floats):
@@ -1109,6 +1148,7 @@ def parse_gdb_log(file, options):
     packet_name_regex = re.compile('([A-Za-z_]+)[^a-z]')
     packet_transmit_name_regex = re.compile('(?P<direction>send|read) packet: (?P<packet>.*)')
     packet_contents_name_regex = re.compile('\$([^#]+)#[0-9a-fA-F]{2}')
+    packet_checksum_regex = re.compile('.*#[0-9a-fA-F]{2}$')
     packet_names_regex_str = '(' + '|'.join(gdb_remote_commands.keys()) + ')(.*)';
     packet_names_regex = re.compile(packet_names_regex_str);
     
@@ -1123,7 +1163,13 @@ def parse_gdb_log(file, options):
     last_command_args = None
     last_command_packet = None
     hide_next_response = False
-    for line in lines:
+    num_lines = len(lines)
+    skip_count = 0
+    for (line_index, line) in enumerate(lines):
+        # See if we need to skip any lines
+        if skip_count > 0:
+            skip_count -= 1
+            continue
         m = packet_transmit_name_regex.search(line)
         is_command = False
         direction = None
@@ -1138,21 +1184,42 @@ def parse_gdb_log(file, options):
                 
             #print 'direction = "%s", packet = "%s"' % (direction, packet)
             
-            if is_command:
-                print '-->',
-            else:
-                print '<--',
-
             if packet[0] == '+':
+                if is_command:
+                    print '-->',
+                else:
+                    print '<--',
                 if not options.quiet: print 'ACK'
                 continue
             elif packet[0] == '-':
+                if is_command:
+                    print '-->',
+                else:
+                    print '<--',
                 if not options.quiet: print 'NACK'
                 continue
             elif packet[0] == '$':
                 m = packet_contents_name_regex.match(packet)
+                if not m and packet[0] == '$':
+                    multiline_packet = packet
+                    idx = line_index + 1
+                    while idx < num_lines:
+                        if not options.quiet and not hide_next_response:
+                            print '#  ', lines[idx]
+                        multiline_packet += lines[idx]
+                        m = packet_contents_name_regex.match(multiline_packet)
+                        if m:
+                            packet = multiline_packet
+                            skip_count = idx - line_index
+                            break
+                        else:
+                            idx += 1
                 if m:
-                    contents = m.group(1)
+                    if is_command:
+                        print '-->',
+                    else:
+                        print '<--',
+                    contents = decode_packet(m.group(1))
                     if is_command:
                         hide_next_response = False
                         m = packet_names_regex.match (contents)