org.threeten.bp.chrono.HijrahDateConfigurator.scala Maven / Gradle / Ivy
package org.threeten.bp.chrono
import java.io.File
import java.io.FileInputStream
import java.io.BufferedReader
import java.io.IOException
import java.io.InputStream
import java.io.InputStreamReader
import java.util.zip.ZipEntry
import java.util.zip.ZipFile
import java.util.StringTokenizer
import java.text.ParseException
object HijrahDateConfigurator {
/** File separator. */
private val FILE_SEP: Char = File.separatorChar
/** Path separator. */
private val PATH_SEP: String = File.pathSeparator
/** Default config file name. */
private val DEFAULT_CONFIG_FILENAME: String = "hijrah_deviation.cfg"
/** Default path to the config file. */
private val DEFAULT_CONFIG_PATH: String = s"org${FILE_SEP}threeten${FILE_SEP}bp${FILE_SEP}chrono"
/**
* Read hijrah_deviation.cfg file. The config file contains the deviation data with following
* format.
*
* StartYear/StartMonth(0-based)-EndYear/EndMonth(0-based):Deviation day (1, 2, -1, or -2)
*
* Line separator or ";" is used for the separator of each deviation data.
*
* Here is the example.
*
* 1429/0-1429/1:1 1429/2-1429/7:1;1429/6-1429/11:1 1429/11-9999/11:1
*
* @throws IOException
* for zip/jar file handling exception.
* @throws ParseException
* if the format of the configuration file is wrong.
*/
@throws[IOException]
@throws[ParseException]
private[chrono] def readDeviationConfig(): Unit = {
val is: InputStream = getConfigFileInputStream
if (is != null) {
var br: BufferedReader = null
try {
br = new BufferedReader(new InputStreamReader(is))
var line: String = ""
var num: Int = 0
while ({ line = br.readLine; line } != null) {
num += 1
line = line.trim
parseLine(line, num)
}
} finally
if (br != null)
br.close()
}
}
/**
* Parse each deviation element.
*
* @param line
* a line to parse
* @param num
* line number
* @throws ParseException
* if line has incorrect format.
*/
@throws[ParseException]
private def parseLine(line: String, num: Int): Unit = {
val st: StringTokenizer = new StringTokenizer(line, ";")
while (st.hasMoreTokens) {
val deviationElement: String = st.nextToken
val offsetIndex: Int = deviationElement.indexOf(':')
if (offsetIndex != -1) {
val offsetString: String =
deviationElement.substring(offsetIndex + 1, deviationElement.length)
var offset: Int = 0
try offset = offsetString.toInt
catch {
case _: NumberFormatException =>
throw new ParseException(s"Offset is not properly set at line $num.", num)
}
val separatorIndex: Int = deviationElement.indexOf('-')
if (separatorIndex != -1) {
val startDateStg: String = deviationElement.substring(0, separatorIndex)
val endDateStg: String = deviationElement.substring(separatorIndex + 1, offsetIndex)
val startDateYearSepIndex: Int = startDateStg.indexOf('/')
val endDateYearSepIndex: Int = endDateStg.indexOf('/')
var startYear: Int = -1
var endYear: Int = -1
var startMonth: Int = -1
var endMonth: Int = -1
if (startDateYearSepIndex != -1) {
val startYearStg: String = startDateStg.substring(0, startDateYearSepIndex)
val startMonthStg: String =
startDateStg.substring(startDateYearSepIndex + 1, startDateStg.length)
try startYear = startYearStg.toInt
catch {
case _: NumberFormatException =>
throw new ParseException(s"Start year is not properly set at line $num.", num)
}
try startMonth = startMonthStg.toInt
catch {
case _: NumberFormatException =>
throw new ParseException(s"Start month is not properly set at line $num.", num)
}
} else
throw new ParseException(s"Start year/month has incorrect format at line $num.", num)
if (endDateYearSepIndex != -1) {
val endYearStg: String = endDateStg.substring(0, endDateYearSepIndex)
val endMonthStg: String =
endDateStg.substring(endDateYearSepIndex + 1, endDateStg.length)
try endYear = endYearStg.toInt
catch {
case _: NumberFormatException =>
throw new ParseException(s"End year is not properly set at line $num.", num)
}
try endMonth = endMonthStg.toInt
catch {
case _: NumberFormatException =>
throw new ParseException(s"End month is not properly set at line $num.", num)
}
} else
throw new ParseException(s"End year/month has incorrect format at line $num.", num)
if (startYear != -1 && startMonth != -1 && endYear != -1 && endMonth != -1)
HijrahDate.addDeviationAsHijrah(startYear, startMonth, endYear, endMonth, offset)
else
throw new ParseException(s"Unknown error at line $num.", num)
} else
throw new ParseException(s"Start and end year/month has incorrect format at line $num.",
num
)
} else
throw new ParseException(s"Offset has incorrect format at line $num.", num)
}
}
/**
* Return InputStream for deviation configuration file. The default location of the deviation file
* is: $CLASSPATH/org/threeten/bp/chrono
And the default file name is:
* hijrah_deviation.cfg
The default location and file name can be overriden by setting
* following two Java's system property. Location:
* org.threeten.bp.i18n.HijrahDate.deviationConfigDir File name:
* org.threeten.bp.i18n.HijrahDate.deviationConfigFile
Regarding the file format, see
* readDeviationConfig() method for details.
*
* @return
* InputStream for file reading exception.
* @throws IOException
* for zip/jar file handling exception.
*/
@throws[IOException]
private def getConfigFileInputStream: InputStream = {
var fileName: String = System.getProperty("org.threeten.bp.i18n.HijrahDate.deviationConfigFile")
if (fileName == null)
fileName = DEFAULT_CONFIG_FILENAME
var dir: String = System.getProperty("org.threeten.bp.i18n.HijrahDate.deviationConfigDir")
if (dir != null) {
if (!(dir.length == 0 && dir.endsWith(System.getProperty("file.separator"))))
dir = dir + System.getProperty("file.separator")
val file: File = new File(dir + FILE_SEP + fileName)
if (file.exists)
try new FileInputStream(file)
catch {
case ioe: IOException =>
throw ioe
}
else null
} else {
val classPath: String = System.getProperty("java.class.path")
val st: StringTokenizer = new StringTokenizer(classPath, PATH_SEP)
while (st.hasMoreTokens) {
val path: String = st.nextToken
val file: File = new File(path)
if (file.exists)
if (file.isDirectory) {
val f: File = new File(path + FILE_SEP + DEFAULT_CONFIG_PATH, fileName)
if (f.exists)
try
return new FileInputStream(
path + FILE_SEP + DEFAULT_CONFIG_PATH + FILE_SEP + fileName
)
catch {
case ioe: IOException => throw ioe
}
} else {
var zip: ZipFile = null
try zip = new ZipFile(file)
catch {
case _: IOException => zip = null
}
if (zip != null) {
var targetFile: String = DEFAULT_CONFIG_PATH + FILE_SEP + fileName
var entry: ZipEntry = zip.getEntry(targetFile)
if (entry == null) {
if (FILE_SEP == '/')
targetFile = targetFile.replace('/', '\\')
else if (FILE_SEP == '\\')
targetFile = targetFile.replace('\\', '/')
entry = zip.getEntry(targetFile)
}
if (entry != null)
try return zip.getInputStream(entry)
catch {
case ioe: IOException => throw ioe
}
}
}
}
null
}
}
}
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