public static InputStream openCachedStream(URI uri) { TiResponseCache rc = (TiResponseCache) TiResponseCache.getDefault(); if (rc == null) { return null; } if (rc.cacheDir == null) { return null; } String hash = DigestUtils.shaHex(uri.toString()); File hFile = new File(rc.cacheDir, hash + HEADER_SUFFIX); File bFile = new File(rc.cacheDir, hash + BODY_SUFFIX); if (!bFile.exists() || !hFile.exists()) { return null; } try { return new FileInputStream(bFile); } catch (FileNotFoundException e) { // Fallback to URL download? return null; } }
public static void remove(URI uri) { TiResponseCache rc = (TiResponseCache) TiResponseCache.getDefault(); if (rc == null) return; if (rc.cacheDir == null) return; String hash = DigestUtils.shaHex(uri.toString()); File hFile = new File(rc.cacheDir, hash + HEADER_SUFFIX); File bFile = new File(rc.cacheDir, hash + BODY_SUFFIX); if (bFile.exists()) bFile.delete(); if (hFile.exists()) hFile.delete(); }
public static boolean peek(URI uri) { TiResponseCache rc = (TiResponseCache) TiResponseCache.getDefault(); if (rc == null) return false; if (rc.cacheDir == null) return false; String hash = DigestUtils.shaHex(uri.toString()); File hFile = new File(rc.cacheDir, hash + HEADER_SUFFIX); File bFile = new File(rc.cacheDir, hash + BODY_SUFFIX); if (!bFile.exists() || !hFile.exists()) return false; return true; }