1 | public static String loadSnippet(String snippetID, boolean preferCached) throws IOException {
|
2 | return loadSnippet(parseSnippetID(snippetID), preferCached); |
3 | } |
4 | |
5 | public static long parseSnippetID(String snippetID) {
|
6 | return Long.parseLong(shortenSnippetID(snippetID)); |
7 | } |
8 | |
9 | private static String shortenSnippetID(String snippetID) {
|
10 | if (snippetID.startsWith("#"))
|
11 | snippetID = snippetID.substring(1); |
12 | String httpBlaBla = "http://tinybrain.de/"; |
13 | if (snippetID.startsWith(httpBlaBla)) |
14 | snippetID = snippetID.substring(httpBlaBla.length()); |
15 | return snippetID; |
16 | } |
17 | |
18 | public static boolean isSnippetID(String snippetID) {
|
19 | snippetID = shortenSnippetID(snippetID); |
20 | return isInteger(snippetID) && Long.parseLong(snippetID) != 0; |
21 | } |
22 | |
23 | public static boolean isInteger(String s) {
|
24 | return Pattern.matches("\\-?\\d+", s);
|
25 | } |
26 | |
27 | public static String loadSnippet(long snippetID, boolean preferCached) throws IOException {
|
28 | if (preferCached) {
|
29 | initSnippetCache(); |
30 | String text = DiskSnippetCache_get(snippetID); |
31 | if (text != null) |
32 | return text; |
33 | } |
34 | |
35 | String text; |
36 | try {
|
37 | URL url = new URL("http://tinybrain.de:8080/getraw.php?id=" + snippetID);
|
38 | text = loadPage(url); |
39 | } catch (FileNotFoundException e) {
|
40 | throw new IOException("Snippet #" + snippetID + " not found or not public");
|
41 | } |
42 | |
43 | try {
|
44 | initSnippetCache(); |
45 | DiskSnippetCache_put(snippetID, text); |
46 | } catch (IOException e) {
|
47 | System.err.println("Minor warning: Couldn't save snippet to cache (" + DiskSnippetCache_getDir() + ")");
|
48 | } |
49 | |
50 | return text; |
51 | } |
52 | |
53 | private static String loadPage(URL url) throws IOException {
|
54 | System.out.println("Loading: " + url.toExternalForm());
|
55 | URLConnection con = url.openConnection(); |
56 | return loadPage(con, url); |
57 | } |
58 | |
59 | public static String loadPage(URLConnection con, URL url) throws IOException {
|
60 | String contentType = con.getContentType(); |
61 | if (contentType == null) |
62 | throw new IOException("Page could not be read: " + url);
|
63 | //Log.info("Content-Type: " + contentType);
|
64 | String charset = guessCharset(contentType); |
65 | Reader r = new InputStreamReader(con.getInputStream(), charset); |
66 | StringBuilder buf = new StringBuilder(); |
67 | while (true) {
|
68 | int ch = r.read(); |
69 | if (ch < 0) |
70 | break; |
71 | //Log.info("Chars read: " + buf.length());
|
72 | buf.append((char) ch); |
73 | } |
74 | return buf.toString(); |
75 | } |
76 | |
77 | public static String guessCharset(String contentType) {
|
78 | Pattern p = Pattern.compile("text/html;\\s+charset=([^\\s]+)\\s*");
|
79 | Matcher m = p.matcher(contentType); |
80 | /* If Content-Type doesn't match this pre-conception, choose default and hope for the best. */ |
81 | return m.matches() ? m.group(1) : "ISO-8859-1"; |
82 | } |
83 | |
84 | static File DiskSnippetCache_dir; |
85 | |
86 | public static void initDiskSnippetCache(File dir) {
|
87 | DiskSnippetCache_dir = dir; |
88 | dir.mkdirs(); |
89 | } |
90 | |
91 | public static synchronized String DiskSnippetCache_get(long snippetID) throws IOException {
|
92 | return loadTextFile(DiskSnippetCache_getFile(snippetID).getPath(), null); |
93 | } |
94 | |
95 | private static File DiskSnippetCache_getFile(long snippetID) {
|
96 | return new File(DiskSnippetCache_dir, "" + snippetID); |
97 | } |
98 | |
99 | public static synchronized void DiskSnippetCache_put(long snippetID, String snippet) throws IOException {
|
100 | saveTextFile(DiskSnippetCache_getFile(snippetID).getPath(), snippet); |
101 | } |
102 | |
103 | public static File DiskSnippetCache_getDir() {
|
104 | return DiskSnippetCache_dir; |
105 | } |
106 | |
107 | public static void initSnippetCache() {
|
108 | if (DiskSnippetCache_dir == null) |
109 | initDiskSnippetCache(new File(System.getProperty("user.home"), ".tinybrain/snippet-cache"));
|
110 | } |
Began life as a copy of #2000327
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| Snippet ID: | #2000328 |
| Snippet name: | loadSnippet and dependencies (function) |
| Eternal ID of this version: | #2000328/1 |
| Text MD5: | 9964ae3f5be0e90b147c77a93eb66560 |
| Author: | stefan |
| Category: | javax |
| Type: | New Tinybrain snippet |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2015-04-29 01:29:26 |
| Source code size: | 3806 bytes / 110 lines |
| Pitched / IR pitched: | No / Yes |
| Views / Downloads: | 608 / 135 |
| Referenced in: | [show references] |