forked from actframework/actframework
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCommandLineParser.java
More file actions
245 lines (212 loc) · 7.05 KB
/
CommandLineParser.java
File metadata and controls
245 lines (212 loc) · 7.05 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
package act.cli.util;
import act.cli.InvalidCommandLineException;
import org.osgl.util.C;
import org.osgl.util.E;
import org.osgl.util.S;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Parse a command line
*/
public class CommandLineParser {
private String command;
private String raw;
/*
* Map value part to lead part. E.g.
* {@code -n 10} create an entry ("-n", "10") and
* {@code -b} create an entry ("-b", "true")
*/
private Map<String, String> options;
private List<String> arguments;
static final Pattern P_QUOTATION = Pattern.compile("([^\"]\\S*|\".+?\")\\s*");
static final Pattern P_APOSTROPHE = Pattern.compile("([^\']\\S*|\'.+?\')\\s*");
public CommandLineParser(String line) {
E.illegalArgumentIf(S.blank(line));
raw = line.trim();
options = C.newMap();
List<String> sl = C.newList();
Pattern ptn = choosePattern(raw);
Matcher m = ptn.matcher(raw);
while (m.find()) {
String s = m.group(1);
if (ptn == P_QUOTATION) {
s = S.strip(s, "\"", "\"");
} else {
s = S.strip(s, "\'", "\'");
}
sl.add(s);
}
parse(sl);
}
private Pattern choosePattern(String s) {
Pattern ptn = P_APOSTROPHE;
int p1 = s.indexOf('"');
if (p1 > -1) {
int p2 = s.indexOf('\'');
if (p2 < 0 || p1 < p2) {
ptn = P_QUOTATION;
}
}
return ptn;
}
public String commandLine() {
return raw;
}
private void parse(List<String> tokens) {
command = tokens.remove(0).intern();
arguments = C.newList();
String lead = null;
for (String cur : tokens) {
if (cur.startsWith("-")) {
// todo handle --option=a, --option:b style
String[] sa = cur.split("[=:]");
switch (sa.length) {
case 1:
break;
case 2:
options.put(sa[0], sa[1]);
continue;
default:
throw new InvalidCommandLineException("uknown option: %s", cur);
}
if (null != lead) {
options.put(lead, "true");
}
lead = cur;
} else {
if (null != lead) {
options.put(lead, cur);
lead = null;
} else {
arguments.add(cur);
}
}
}
if (null != lead) {
options.put(lead, "true");
}
}
public String command() {
return command;
}
public List<String> arguments() {
return C.list(arguments);
}
public String argument(int id) {
return arguments.get(id);
}
public int argumentCount() {
return arguments.size();
}
public int optionCount() {
return arguments.size();
}
/**
* When a command has only one option and no arguments the
* user can supply the option as argument to suppress leads typing.
*
* This method will return the single argument as an option with
* any leads. If the parser found there are more than one argument
* or there are options then this method will return `null`
* @return
*/
public String argumentAsOption() {
if (1 == argumentCount() && 0 == options.size()) {
return argument(0);
}
return null;
}
public boolean getBoolean(String lead1, String lead2) {
String s = o(lead1, lead2);
return "true" == s;
}
public Boolean getBooleanObject(String lead1, String lead2) {
return getBoolean(lead1, lead2);
}
public byte getByte(String lead1, String lead2, Byte def) {
Byte b = getByteObject(lead1, lead2, def);
if (null != b) {
return b;
}
throw new InvalidCommandLineException("Cannot get byte type option");
}
public Byte getByteObject(String lead1, String lead2, Byte def) {
String s = o(lead1, lead2);
return null == s ? def : Byte.valueOf(s);
}
public char getChar(String lead1, String lead2, Character def) {
Character c = getCharObject(lead1, lead2, def);
if (null != c) {
return c;
}
throw new InvalidCommandLineException("Cannot get char type option");
}
public Character getCharObject(String lead1, String lead2, Character def) {
String s = o(lead1, lead2);
return null == s ? def : s.charAt(0);
}
public short getShort(String lead1, String lead2, Short def) {
Short o = getShortObject(lead1, lead2, def);
if (null != o) {
return o;
}
throw new InvalidCommandLineException("Cannot get short type option");
}
public Short getShortObject(String lead1, String lead2, Short def) {
String s = o(lead1, lead2);
return null == s ? def : Short.valueOf(s);
}
public int getInt(String lead1, String lead2, Integer def) {
Integer n = getIntObject(lead1, lead2, def);
if (null != n) {
return n;
}
throw new InvalidCommandLineException("Cannot get int type option");
}
public Integer getIntObject(String lead1, String lead2, Integer def) {
String s = o(lead1, lead2);
return null == s ? def : Integer.valueOf(s);
}
public float getFloat(String lead1, String lead2, Float def) {
Float o = getFloatObject(lead1, lead2, def);
if (null != o) {
return o;
}
throw new InvalidCommandLineException("Cannot get float type option");
}
public Float getFloatObject(String lead1, String lead2, Float def) {
String s = o(lead1, lead2);
return null == s ? def : Float.valueOf(s);
}
public long getLong(String lead1, String lead2, Long def) {
Long o = getLongObject(lead1, lead2, def);
if (null != o) {
return o;
}
throw new InvalidCommandLineException("Cannot get long type option");
}
public Double getDoubleObject(String lead1, String lead2, Double def) {
String s = o(lead1, lead2);
return null == s ? def : Double.valueOf(s);
}
public double getDouble(String lead1, String lead2, Double def) {
Double o = getDoubleObject(lead1, lead2, def);
if (null != o) {
return o;
}
throw new InvalidCommandLineException("Cannot get double type option");
}
public Long getLongObject(String lead1, String lead2, Long def) {
String s = o(lead1, lead2);
return null == s ? def : Long.valueOf(s);
}
public String getString(String lead1, String lead2) {
return o(lead1, lead2);
}
private String o(String lead1, String lead2) {
String s = options.get(lead1);
return null == s ? options.get(lead2) : s;
}
}