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comparison src/luan/lib/json/JsonToString.java @ 1117:9a1aa6fc0b4e

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remove json_pretty_string and make json_string somewhat pretty
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 04 Aug 2017 11:15:53 -0600
parents 633ca24d4d6e
children b70102bab110
comparison
equal deleted inserted replaced
1116:633ca24d4d6e 1117:9a1aa6fc0b4e
13 } 13 }
14 } 14 }
15 15
16 public static String toString(Object obj) throws JsonException { 16 public static String toString(Object obj) throws JsonException {
17 StringBuilder sb = new StringBuilder(); 17 StringBuilder sb = new StringBuilder();
18 toString(obj,sb); 18 toString(obj,sb,0);
19 sb.append('\n');
19 return sb.toString(); 20 return sb.toString();
20 } 21 }
21 22
22 private static void toString(Object obj,StringBuilder sb) throws JsonException { 23 private static void toString(Object obj,StringBuilder sb,int indented) throws JsonException {
23 if( obj == null || obj instanceof Boolean || obj instanceof Number ) { 24 if( obj == null || obj instanceof Boolean || obj instanceof Number ) {
24 sb.append(obj); 25 sb.append(obj);
25 return; 26 return;
26 } 27 }
27 if( obj instanceof String ) { 28 if( obj instanceof String ) {
28 toString((String)obj,sb); 29 toString((String)obj,sb);
29 return; 30 return;
30 } 31 }
31 if( obj instanceof List ) { 32 if( obj instanceof List ) {
32 toString((List)obj,sb); 33 toString((List)obj,sb,indented);
33 return; 34 return;
34 } 35 }
35 if( obj instanceof Map ) { 36 if( obj instanceof Map ) {
36 toString((Map)obj,sb); 37 toString((Map)obj,sb,indented);
37 return; 38 return;
38 } 39 }
39 throw new JsonException("can't handle type "+obj.getClass().getName()); 40 throw new JsonException("can't handle type "+obj.getClass().getName());
40 } 41 }
41 42
70 } 71 }
71 } 72 }
72 sb.append('"'); 73 sb.append('"');
73 } 74 }
74 75
75 private static void toString(List list,StringBuilder sb) {
76 sb.append('[');
77 if( !list.isEmpty() ) {
78 toString(list.get(0),sb);
79 for( int i=1; i<list.size(); i++ ) {
80 sb.append(',');
81 toString(list.get(i),sb);
82 }
83 }
84 sb.append(']');
85 return;
86 }
87
88 private static void toString(Map map,StringBuilder sb) throws JsonException {
89 sb.append('{');
90 if( !map.isEmpty() ) {
91 Iterator<Map.Entry> i = map.entrySet().iterator();
92 toString(i.next(),sb);
93 while( i.hasNext() ) {
94 sb.append(',');
95 toString(i.next(),sb);
96 }
97 }
98 sb.append('}');
99 }
100
101 private static void toString(Map.Entry entry,StringBuilder sb) throws JsonException {
102 Object key = entry.getKey();
103 if( !(key instanceof String) )
104 throw new JsonException("table keys must be strings");
105 toString((String)key,sb);
106 sb.append(':');
107 toString(entry.getValue(),sb);
108 }
109
110
111 public static String toPrettyString(Object obj) throws JsonException {
112 StringBuilder sb = new StringBuilder();
113 toString(obj,sb,0);
114 sb.append('\n');
115 return sb.toString();
116 }
117
118 private static void toString(Object obj,StringBuilder sb,int indented) throws JsonException {
119 if( obj instanceof List ) {
120 toString((List)obj,sb,indented);
121 return;
122 }
123 if( obj instanceof Map ) {
124 toString((Map)obj,sb,indented);
125 return;
126 }
127 toString(obj,sb);
128 }
129
130 private static void indent(StringBuilder sb,int indented) {
131 sb.append('\n');
132 for( int i=0; i<indented; i++ ) {
133 sb.append('\t');
134 }
135 }
136
137 private static void toString(List list,StringBuilder sb,int indented) { 76 private static void toString(List list,StringBuilder sb,int indented) {
138 sb.append('['); 77 sb.append('[');
139 if( !list.isEmpty() ) { 78 if( !list.isEmpty() ) {
140 indent(sb,indented+1); 79 indent(sb,indented+1);
141 toString(list.get(0),sb,indented+1); 80 toString(list.get(0),sb,indented+1);
142 for( int i=1; i<list.size(); i++ ) { 81 for( int i=1; i<list.size(); i++ ) {
143 sb.append(','); 82 sb.append(", ");
144 indent(sb,indented+1);
145 toString(list.get(i),sb,indented+1); 83 toString(list.get(i),sb,indented+1);
146 } 84 }
147 indent(sb,indented); 85 indent(sb,indented);
148 } 86 }
149 sb.append(']'); 87 sb.append(']');
173 toString((String)key,sb); 111 toString((String)key,sb);
174 sb.append(": "); 112 sb.append(": ");
175 toString(entry.getValue(),sb,indented); 113 toString(entry.getValue(),sb,indented);
176 } 114 }
177 115
116 private static void indent(StringBuilder sb,int indented) {
117 sb.append('\n');
118 for( int i=0; i<indented; i++ ) {
119 sb.append('\t');
120 }
121 }
178 122
179 private JsonToString() {} // never 123 private JsonToString() {} // never
180 } 124 }