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7da41ecd | 1 | package be.nikiroo.jvcard.resources; |
a3b510ab | 2 | |
26d254a3 NR |
3 | import java.awt.Image; |
4 | import java.awt.image.BufferedImage; | |
5 | import java.io.ByteArrayInputStream; | |
6 | import java.io.ByteArrayOutputStream; | |
7 | import java.io.IOException; | |
cf77cb35 NR |
8 | import java.security.MessageDigest; |
9 | import java.security.NoSuchAlgorithmException; | |
296a0b75 NR |
10 | import java.text.Normalizer; |
11 | import java.text.Normalizer.Form; | |
b9f192ed NR |
12 | import java.text.ParseException; |
13 | import java.text.SimpleDateFormat; | |
14 | import java.util.Date; | |
296a0b75 NR |
15 | import java.util.regex.Pattern; |
16 | ||
26d254a3 NR |
17 | import javax.imageio.ImageIO; |
18 | import javax.xml.bind.DatatypeConverter; | |
19 | ||
a3b510ab NR |
20 | import com.googlecode.lanterna.gui2.LinearLayout.Alignment; |
21 | ||
22 | public class StringUtils { | |
296a0b75 NR |
23 | static private Pattern marks = Pattern |
24 | .compile("[\\p{InCombiningDiacriticalMarks}\\p{IsLm}\\p{IsSk}]+"); | |
a3b510ab | 25 | |
296a0b75 NR |
26 | /** |
27 | * Fix the size of the given {@link String} either with space-padding or by | |
28 | * shortening it. | |
29 | * | |
30 | * @param text | |
31 | * the {@link String} to fix | |
32 | * @param width | |
3634193b | 33 | * the size of the resulting {@link String} or -1 for a noop |
296a0b75 NR |
34 | * |
35 | * @return the resulting {@link String} of size <i>size</i> | |
36 | */ | |
a3b510ab NR |
37 | static public String padString(String text, int width) { |
38 | return padString(text, width, true, Alignment.Beginning); | |
39 | } | |
40 | ||
296a0b75 NR |
41 | /** |
42 | * Fix the size of the given {@link String} either with space-padding or by | |
43 | * optionally shortening it. | |
44 | * | |
45 | * @param text | |
46 | * the {@link String} to fix | |
47 | * @param width | |
48 | * the size of the resulting {@link String} if the text fits or | |
3634193b | 49 | * if cut is TRUE or -1 for a noop |
296a0b75 NR |
50 | * @param cut |
51 | * cut the {@link String} shorter if needed | |
52 | * @param align | |
53 | * align the {@link String} in this position if we have enough | |
54 | * space | |
55 | * | |
56 | * @return the resulting {@link String} of size <i>size</i> minimum | |
57 | */ | |
a3b510ab NR |
58 | static public String padString(String text, int width, boolean cut, |
59 | Alignment align) { | |
26d254a3 | 60 | |
a3b510ab NR |
61 | if (width >= 0) { |
62 | if (text == null) | |
63 | text = ""; | |
64 | ||
65 | int diff = width - text.length(); | |
66 | ||
67 | if (diff < 0) { | |
68 | if (cut) | |
69 | text = text.substring(0, width); | |
70 | } else if (diff > 0) { | |
71 | if (diff < 2 && align != Alignment.End) | |
72 | align = Alignment.Beginning; | |
73 | ||
74 | switch (align) { | |
75 | case Beginning: | |
76 | text = text + new String(new char[diff]).replace('\0', ' '); | |
77 | break; | |
78 | case End: | |
79 | text = new String(new char[diff]).replace('\0', ' ') + text; | |
80 | break; | |
81 | case Center: | |
82 | case Fill: | |
83 | default: | |
84 | int pad1 = (diff) / 2; | |
85 | int pad2 = (diff + 1) / 2; | |
86 | text = new String(new char[pad1]).replace('\0', ' ') + text | |
87 | + new String(new char[pad2]).replace('\0', ' '); | |
88 | break; | |
89 | } | |
90 | } | |
91 | } | |
92 | ||
93 | return text; | |
94 | } | |
95 | ||
296a0b75 NR |
96 | /** |
97 | * Sanitise the given input to make it more Terminal-friendly by removing | |
98 | * combining characters. | |
99 | * | |
100 | * @param input | |
101 | * the input to sanitise | |
102 | * @param allowUnicode | |
103 | * allow Unicode or only allow ASCII Latin characters | |
104 | * | |
105 | * @return the sanitised {@link String} | |
106 | */ | |
107 | static public String sanitize(String input, boolean allowUnicode) { | |
108 | return sanitize(input, allowUnicode, !allowUnicode); | |
109 | } | |
110 | ||
111 | /** | |
112 | * Sanitise the given input to make it more Terminal-friendly by removing | |
113 | * combining characters. | |
114 | * | |
115 | * @param input | |
116 | * the input to sanitise | |
117 | * @param allowUnicode | |
118 | * allow Unicode or only allow ASCII Latin characters | |
119 | * @param removeAllAccents | |
120 | * TRUE to replace all accentuated characters by their non | |
121 | * accentuated counter-parts | |
122 | * | |
123 | * @return the sanitised {@link String} | |
124 | */ | |
125 | static public String sanitize(String input, boolean allowUnicode, | |
126 | boolean removeAllAccents) { | |
127 | ||
128 | if (removeAllAccents) { | |
129 | input = Normalizer.normalize(input, Form.NFKD); | |
130 | input = marks.matcher(input).replaceAll(""); | |
131 | } | |
132 | ||
133 | input = Normalizer.normalize(input, Form.NFKC); | |
134 | ||
135 | if (!allowUnicode) { | |
adf9c449 NR |
136 | StringBuilder builder = new StringBuilder(); |
137 | for (int index = 0; index < input.length(); index++) { | |
138 | char car = input.charAt(index); | |
139 | // displayable chars in ASCII are in the range 32<->255, | |
140 | // except DEL (127) | |
141 | if (car >= 32 && car <= 255 && car != 127) { | |
142 | builder.append(car); | |
143 | } | |
144 | } | |
145 | input = builder.toString(); | |
296a0b75 NR |
146 | } |
147 | ||
148 | return input; | |
149 | } | |
b9f192ed NR |
150 | |
151 | /** | |
152 | * Convert between time in milliseconds to {@link String} in a "static" way | |
153 | * (to exchange data over the wire, for instance). | |
154 | * | |
155 | * @param time | |
156 | * the time in milliseconds | |
157 | * | |
158 | * @return the time as a {@link String} | |
159 | */ | |
160 | static public String fromTime(long time) { | |
161 | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); | |
162 | return sdf.format(new Date(time)); | |
163 | } | |
164 | ||
165 | /** | |
166 | * Convert between time as a {@link String} to milliseconds in a "static" | |
167 | * way (to exchange data over the wire, for instance). | |
168 | * | |
169 | * @param time | |
170 | * the time as a {@link String} | |
171 | * | |
172 | * @return the time in milliseconds | |
173 | */ | |
174 | static public long toTime(String display) { | |
175 | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); | |
176 | try { | |
177 | return sdf.parse(display).getTime(); | |
178 | } catch (ParseException e) { | |
179 | return -1; | |
180 | } | |
181 | } | |
cf77cb35 | 182 | |
26d254a3 NR |
183 | /** |
184 | * Convert the given {@link Image} object into a Base64 representation of | |
185 | * the same {@link Image}. object. | |
186 | * | |
187 | * @param image | |
188 | * the {@link Image} object to convert | |
189 | * | |
190 | * @return the Base64 representation | |
191 | */ | |
192 | static public String fromImage(BufferedImage image) { | |
193 | String imageString = null; | |
194 | ByteArrayOutputStream out = new ByteArrayOutputStream(); | |
195 | ||
196 | try { | |
197 | ImageIO.write(image, "png", out); | |
198 | byte[] imageBytes = out.toByteArray(); | |
199 | ||
200 | imageString = DatatypeConverter.printBase64Binary(imageBytes); | |
201 | ||
202 | out.close(); | |
203 | } catch (IOException e) { | |
204 | } | |
205 | ||
206 | return imageString; | |
207 | } | |
208 | ||
209 | /** | |
210 | * Convert the given Base64 representation of an image into an {@link Image} | |
211 | * object. | |
212 | * | |
213 | * @param b64data | |
214 | * the {@link Image} in Base64 format | |
215 | * | |
216 | * @return the {@link Image} object | |
217 | * | |
218 | * @throws IOException | |
219 | * in case of IO error | |
220 | */ | |
221 | static public BufferedImage toImage(String b64data) throws IOException { | |
222 | BufferedImage image = ImageIO.read(new ByteArrayInputStream( | |
223 | DatatypeConverter.parseBase64Binary(b64data))); | |
224 | image.toString(); | |
225 | return image; | |
226 | } | |
227 | ||
cf77cb35 NR |
228 | /** |
229 | * Return a hash of the given {@link String}. | |
230 | * | |
231 | * @param input | |
232 | * the input data | |
233 | * | |
234 | * @return the hash | |
235 | */ | |
236 | static public String getHash(String input) { | |
237 | try { | |
238 | MessageDigest md = MessageDigest.getInstance("MD5"); | |
239 | md.update(input.getBytes()); | |
240 | byte byteData[] = md.digest(); | |
241 | ||
242 | StringBuffer hexString = new StringBuffer(); | |
243 | for (int i = 0; i < byteData.length; i++) { | |
244 | String hex = Integer.toHexString(0xff & byteData[i]); | |
245 | if (hex.length() == 1) | |
246 | hexString.append('0'); | |
247 | hexString.append(hex); | |
248 | } | |
249 | ||
250 | return hexString.toString(); | |
251 | } catch (NoSuchAlgorithmException e) { | |
252 | // all JVM most probably have an MD5 implementation, but even if | |
253 | // not, returning the input is "correct", if inefficient and | |
254 | // unsecure | |
255 | return input; | |
256 | } | |
257 | } | |
a3b510ab | 258 | } |