core/src/main/java/com/att/cadi/util/Vars.java

   1 /*******************************************************************************\r
   2  * ============LICENSE_START====================================================\r
   3  * * org.onap.aai\r
   4  * * ===========================================================================\r
   5  * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.\r
   6  * * Copyright © 2017 Amdocs\r
   7  * * ===========================================================================\r
   8  * * Licensed under the Apache License, Version 2.0 (the "License");\r
   9  * * you may not use this file except in compliance with the License.\r
  10  * * You may obtain a copy of the License at\r
  11  * * \r
  12  *  *      http://www.apache.org/licenses/LICENSE-2.0\r
  13  * * \r
  14  *  * Unless required by applicable law or agreed to in writing, software\r
  15  * * distributed under the License is distributed on an "AS IS" BASIS,\r
  16  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  17  * * See the License for the specific language governing permissions and\r
  18  * * limitations under the License.\r
  19  * * ============LICENSE_END====================================================\r
  20  * *\r
  21  * * ECOMP is a trademark and service mark of AT&T Intellectual Property.\r
  22  * *\r
  23  ******************************************************************************/\r
  24 package com.att.cadi.util;\r
  25 \r
  26 import java.util.List;\r
  27 \r
  28 public class Vars {\r
  29         /**\r
  30          * Simplified Conversion based on typical use of getting AT&T style RESTful Error Messages\r
  31          * @param text\r
  32          * @param vars\r
  33          * @return\r
  34          */\r
  35         public static String convert(final String text, final List<String> vars) {\r
  36                 String[] array = new String[vars.size()];\r
  37                 StringBuilder sb = new StringBuilder();\r
  38                 convert(sb,text,vars.toArray(array));\r
  39                 return sb.toString();\r
  40         }\r
  41         /**\r
  42          * Convert a format string with "%s" into AT&T RESTful Error %1 %2 (number) format\r
  43          * If "holder" is passed in, it is built with full Message extracted (typically for Logging)\r
  44          * @param holder\r
  45          * @param text\r
  46          * @param vars\r
  47          * @return\r
  48          */\r
  49         public static String convert(final StringBuilder holder, final String text, final String ... vars) {\r
  50                 StringBuilder sb = null;\r
  51                 int idx,index=0,prev = 0;\r
  52                 \r
  53                 if(text.contains("%s")) {\r
  54                         sb = new StringBuilder();\r
  55                 }\r
  56                 \r
  57                 StringBuilder[] sbs = new StringBuilder[] {sb,holder};\r
  58                 boolean replace, clearIndex = false;\r
  59                 int c;\r
  60                 while((idx=text.indexOf('%',prev))>=0) {\r
  61                         replace = false;\r
  62                         if(clearIndex) {\r
  63                                 index=0;\r
  64                         }\r
  65                         if(sb!=null) {\r
  66                                 sb.append(text,prev,idx);\r
  67                         }\r
  68                         if(holder!=null) {\r
  69                                 holder.append(text,prev,idx);\r
  70                         }\r
  71                         \r
  72                         boolean go = true;\r
  73                         while(go) {\r
  74                                 if(text.length()>++idx) {\r
  75                                         switch(c=text.charAt(idx)) {\r
  76                                                 case '0': case '1': case '2': case '3': case '4': \r
  77                                                 case '5': case '6': case '7': case '8': case '9':\r
  78                                                         index *=10;\r
  79                                                         index +=(c-'0');\r
  80                                                         clearIndex=replace=true;\r
  81                                                         continue;\r
  82                                                 case 's':\r
  83                                                         ++index;\r
  84                                                         replace = true;\r
  85                                                         continue;\r
  86                                                 default:\r
  87                                                         break;\r
  88                                         }\r
  89                                 }\r
  90                                 prev = idx;\r
  91                                 go=false;\r
  92                                 if(replace) {\r
  93                                         if(sb!=null) {\r
  94                                                 sb.append('%');\r
  95                                                 sb.append(index);\r
  96                                         }\r
  97                                         if(index<=vars.length) {\r
  98                                                 if(holder!=null) {\r
  99                                                         holder.append(vars[index-1]);\r
 100                                                 }\r
 101                                         }\r
 102                                 } else {\r
 103                                         for(StringBuilder s : sbs) {\r
 104                                                 if(s!=null) {\r
 105                                                         s.append("%");\r
 106                                                 }\r
 107                                         }\r
 108                                 }\r
 109                         }\r
 110                 }\r
 111                 \r
 112                 if(sb!=null) {\r
 113                         sb.append(text,prev,text.length());\r
 114                 }\r
 115                 if(holder!=null) {\r
 116                         holder.append(text,prev,text.length());\r
 117                 }\r
 118 \r
 119                 return sb==null?text:sb.toString();\r
 120         }\r
 121 \r
 122 }\r