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author | Neil Fuller <nfuller@google.com> | 2015-08-24 17:52:56 +0100 |
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committer | Michael Bestas <mikeioannina@cyanogenmod.org> | 2016-07-18 05:05:52 +0300 |
commit | 4e646507b980f2a1cd5dd8dee3e9e70e8880ce54 (patch) | |
tree | 2b609517f0f1c82828e596d87c4e75be47b1eda0 /libc/tools/zoneinfo/ZoneCompactor.java | |
parent | 0a143d038f08d595d2678839e7f5f5dafc92c78d (diff) | |
download | bionic-4e646507b980f2a1cd5dd8dee3e9e70e8880ce54.zip bionic-4e646507b980f2a1cd5dd8dee3e9e70e8880ce54.tar.gz bionic-4e646507b980f2a1cd5dd8dee3e9e70e8880ce54.tar.bz2 |
Move tzdata scripts from bionic to external/icu
The scripts affect files in external/icu, bionic
and the generated files affect libcore. The files must
be updated together so there is no "obvious" home.
OEM developers seem to want to update ICU
themselves and have been asking how. Moving the
scripts to external/icu and splitting the ICU generation
code into a sub-script they can run makes some sense.
Bug: 23419215
Change-Id: Ia26fa526fd2b560a79f36d327a10e262a85db752
Diffstat (limited to 'libc/tools/zoneinfo/ZoneCompactor.java')
-rw-r--r-- | libc/tools/zoneinfo/ZoneCompactor.java | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/libc/tools/zoneinfo/ZoneCompactor.java b/libc/tools/zoneinfo/ZoneCompactor.java deleted file mode 100644 index 2d598fe..0000000 --- a/libc/tools/zoneinfo/ZoneCompactor.java +++ /dev/null @@ -1,192 +0,0 @@ - -import java.io.*; -import java.util.*; - -// usage: java ZoneCompiler <setup file> <data directory> <output directory> <tzdata version> -// -// Compile a set of tzfile-formatted files into a single file containing an index. -// -// The compilation is controlled by a setup file, which is provided as a -// command-line argument. The setup file has the form: -// -// Link <toName> <fromName> -// ... -// <zone filename> -// ... -// -// Note that the links must be declared prior to the zone names. -// A zone name is a filename relative to the source directory such as -// 'GMT', 'Africa/Dakar', or 'America/Argentina/Jujuy'. -// -// Use the 'zic' command-line tool to convert from flat files -// (such as 'africa' or 'northamerica') to a directory -// hierarchy suitable for this tool (containing files such as 'data/Africa/Abidjan'). -// - -public class ZoneCompactor { - // Maximum number of characters in a zone name, including '\0' terminator. - private static final int MAXNAME = 40; - - // Zone name synonyms. - private Map<String,String> links = new HashMap<String,String>(); - - // File offsets by zone name. - private Map<String,Integer> offsets = new HashMap<String,Integer>(); - - // File lengths by zone name. - private Map<String,Integer> lengths = new HashMap<String,Integer>(); - - // Concatenate the contents of 'inFile' onto 'out'. - private static void copyFile(File inFile, OutputStream out) throws Exception { - byte[] ret = new byte[0]; - - InputStream in = new FileInputStream(inFile); - byte[] buf = new byte[8192]; - while (true) { - int nbytes = in.read(buf); - if (nbytes == -1) { - break; - } - out.write(buf, 0, nbytes); - - byte[] nret = new byte[ret.length + nbytes]; - System.arraycopy(ret, 0, nret, 0, ret.length); - System.arraycopy(buf, 0, nret, ret.length, nbytes); - ret = nret; - } - out.flush(); - } - - public ZoneCompactor(String setupFile, String dataDirectory, String zoneTabFile, String outputDirectory, String version) throws Exception { - // Read the setup file and concatenate all the data. - ByteArrayOutputStream allData = new ByteArrayOutputStream(); - BufferedReader reader = new BufferedReader(new FileReader(setupFile)); - String s; - int offset = 0; - while ((s = reader.readLine()) != null) { - s = s.trim(); - if (s.startsWith("Link")) { - StringTokenizer st = new StringTokenizer(s); - st.nextToken(); - String to = st.nextToken(); - String from = st.nextToken(); - links.put(from, to); - } else { - String link = links.get(s); - if (link == null) { - File sourceFile = new File(dataDirectory, s); - long length = sourceFile.length(); - offsets.put(s, offset); - lengths.put(s, (int) length); - - offset += length; - copyFile(sourceFile, allData); - } - } - } - reader.close(); - - // Fill in fields for links. - Iterator<String> it = links.keySet().iterator(); - while (it.hasNext()) { - String from = it.next(); - String to = links.get(from); - - offsets.put(from, offsets.get(to)); - lengths.put(from, lengths.get(to)); - } - - // Create/truncate the destination file. - RandomAccessFile f = new RandomAccessFile(new File(outputDirectory, "tzdata"), "rw"); - f.setLength(0); - - // Write the header. - - // byte[12] tzdata_version -- 'tzdata2012f\0' - // int index_offset -- so we can slip in extra header fields in a backwards-compatible way - // int data_offset - // int zonetab_offset - - // tzdata_version - f.write(toAscii(new byte[12], version)); - - // Write dummy values for the three offsets, and remember where we need to seek back to later - // when we have the real values. - int index_offset_offset = (int) f.getFilePointer(); - f.writeInt(0); - int data_offset_offset = (int) f.getFilePointer(); - f.writeInt(0); - int zonetab_offset_offset = (int) f.getFilePointer(); - f.writeInt(0); - - int index_offset = (int) f.getFilePointer(); - - // Write the index. - ArrayList<String> sortedOlsonIds = new ArrayList<String>(); - sortedOlsonIds.addAll(offsets.keySet()); - Collections.sort(sortedOlsonIds); - it = sortedOlsonIds.iterator(); - while (it.hasNext()) { - String zoneName = it.next(); - if (zoneName.length() >= MAXNAME) { - throw new RuntimeException("zone filename too long: " + zoneName.length()); - } - - // Follow the chain of links to work out where the real data for this zone lives. - String actualZoneName = zoneName; - while (links.get(actualZoneName) != null) { - actualZoneName = links.get(actualZoneName); - } - - f.write(toAscii(new byte[MAXNAME], zoneName)); - f.writeInt(offsets.get(actualZoneName)); - f.writeInt(lengths.get(actualZoneName)); - f.writeInt(0); // Used to be raw GMT offset. No longer used. - } - - int data_offset = (int) f.getFilePointer(); - - // Write the data. - f.write(allData.toByteArray()); - - int zonetab_offset = (int) f.getFilePointer(); - - // Copy the zone.tab. - reader = new BufferedReader(new FileReader(zoneTabFile)); - while ((s = reader.readLine()) != null) { - if (!s.startsWith("#")) { - f.writeBytes(s); - f.write('\n'); - } - } - reader.close(); - - // Go back and fix up the offsets in the header. - f.seek(index_offset_offset); - f.writeInt(index_offset); - f.seek(data_offset_offset); - f.writeInt(data_offset); - f.seek(zonetab_offset_offset); - f.writeInt(zonetab_offset); - - f.close(); - } - - private static byte[] toAscii(byte[] dst, String src) { - for (int i = 0; i < src.length(); ++i) { - if (src.charAt(i) > '~') { - throw new RuntimeException("non-ASCII string: " + src); - } - dst[i] = (byte) src.charAt(i); - } - return dst; - } - - public static void main(String[] args) throws Exception { - if (args.length != 5) { - System.err.println("usage: java ZoneCompactor <setup file> <data directory> <zone.tab file> <output directory> <tzdata version>"); - System.exit(0); - } - new ZoneCompactor(args[0], args[1], args[2], args[3], args[4]); - } -} |