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  1. import java.util.*;
  2. import java.util.regex.MatchResult;
  3. import java.util.regex.Pattern;
  4.  
  5. import static java.util.stream.Collectors.toList;
  6.  
  7. class Ideone {
  8. 	public static void main (String[] args) {
  9.         String data = "/**\r\n" +
  10.                 " * file\r\n" +
  11.                 " */\r\n" +
  12.                 "syntax = \"proto3\";\r\n" +
  13.                 "package demo;\r\n" +
  14.                 "\r\n" +
  15.                 "import \"envoyproxy/protoc-gen-validate/validate/validate.proto\";\r\n" +
  16.                 "import \"google/api/annotations.proto\";\r\n" +
  17.                 "import \"google/protobuf/wrappers.proto\";\r\n" +
  18.                 "import \"protoc-gen-swagger/options/annotations.proto\";\r\n" +
  19.                 "\r\n" +
  20.                 "option go_package = \"bitbucket.com;\r\n" +
  21.                 "option java_multiple_files = true;\r\n" +
  22.                 "\r\n" +
  23.                 "schemes: HTTPS;\r\n" +
  24.                 "consumes: \"application/json\";\r\n" +
  25.                 "produces: \"application/json\";\r\n" +
  26.                 "responses: {\r\n" +
  27.                 "key:\r\n" +
  28.                 "    \"404\";\r\n" +
  29.                 "value: {\r\n" +
  30.                 "description:\r\n" +
  31.                 "    \"not exist.\";\r\n" +
  32.                 "schema: {\r\n" +
  33.                 "json_schema: {\r\n" +
  34.                 "type:\r\n" +
  35.                 "    STRING;\r\n" +
  36.                 "}\r\n" +
  37.                 "}\r\n" +
  38.                 "}\r\n" +
  39.                 "}\r\n" +
  40.                 "responses: {\r\n" +
  41.                 "key:\r\n" +
  42.                 "    \"401\";\r\n" +
  43.                 "value: {\r\n" +
  44.                 "description:\r\n" +
  45.                 "    \"Wrong user.\";\r\n" +
  46.                 "schema: {\r\n" +
  47.                 "json_schema: {\r\n" +
  48.                 "type:\r\n" +
  49.                 "    STRING;\r\n" +
  50.                 "};\r\n" +
  51.                 "example: {\r\n" +
  52.                 "value:\r\n" +
  53.                 "    '{ \"message\": \"wrong user.\" }'\r\n" +
  54.                 "}\r\n" +
  55.                 "}\r\n" +
  56.                 "}\r\n" +
  57.                 "}\r\n" +
  58.                 "\r\n" +
  59.                 "message message1 {\r\n" +
  60.                 "    message message2 {\r\n" +
  61.                 "        enum Enum {\r\n" +
  62.                 "            UNKNOWN = 0;    \r\n" +
  63.                 "        }\r\n" +
  64.                 "    }\r\n" +
  65.                 "    string id = 1;\r\n" +
  66.                 "    string name = 3;\r\n" +
  67.                 "    string account = 4;\r\n" +
  68.                 "}\r\n" +
  69.                 "\r\n" +
  70.                 "foo {" +
  71.                 "    bar = baz" +
  72.                 "}" +
  73.                 "\r\n" +
  74.                 "\r\n" +
  75.                 "message User{\r\n" +
  76.                 "   string firstName = 1 ;\r\n" +
  77.                 "   string lastName  = 2 ;\r\n" +
  78.                 "   string middleName  = 3 [(validate.rules).repeated = { min_items: 0 }];\r\n" +
  79.                 "}\r\n" +
  80.                 "\r\n" +
  81.                 "service Userlogin{\r\n" +
  82.                 "   rpc Login(User) returns (APIResponse);\r\n" +
  83.                 "}";
  84.         List<String> allmsg = Pattern.compile("(?ms)^message.*?^}")
  85.             .matcher(data)
  86.             .results()
  87.             .map(MatchResult::group)
  88.             .collect(toList());
  89.  
  90.         for (int i = 0; i < allmsg.size(); i++) {
  91.             System.out.format("Message %d:\n%s\n\n", i, allmsg.get(i));
  92.         }
  93. 	}
  94. }
Success #stdin #stdout 0.09s 51064KB
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Standard input is empty
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Message 0:
message message1 {
    message message2 {
        enum Enum {
            UNKNOWN = 0;    
        }
    }
    string id = 1;
    string name = 3;
    string account = 4;
}

Message 1:
message User{
   string firstName = 1 ;
   string lastName  = 2 ;
   string middleName  = 3 [(validate.rules).repeated = { min_items: 0 }];
}
https://ideone.com/tVPlL2
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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