/** Returns document counts for each partition. */
Map<Object, Integer> getDocumentCountByPartition(List<Document> documents) {
return ImmutableMap.copyOf(
Maps.transformValues(
getDocumentsByPartition(documents).asMap(),
new Function<Collection<Document>, Integer>() {
public Integer apply(Collection<Document> documents) {
return documents.size();
}
}));
}
/**
* Parse the given array of arguments.
*
* <p>Empty arguments are removed from the list of arguments.
*
* @param args an array with arguments
* @param expectedValueFlags a set containing all value flags (pass null to disable value flag
* parsing)
* @param allowHangingFlag true if hanging flags are allowed
* @param namespace the locals, null to create empty one
* @throws CommandException thrown on a parsing error
*/
public CommandContext(
String[] args,
Set<Character> expectedValueFlags,
boolean allowHangingFlag,
Namespace namespace)
throws CommandException {
if (expectedValueFlags == null) {
expectedValueFlags = Collections.emptySet();
}
originalArgs = args;
command = args[0];
this.namespace = namespace != null ? namespace : new Namespace();
boolean isHanging = false;
SuggestionContext suggestionContext = SuggestionContext.hangingValue();
// Eliminate empty args and combine multiword args first
List<Integer> argIndexList = new ArrayList<Integer>(args.length);
List<String> argList = new ArrayList<String>(args.length);
for (int i = 1; i < args.length; ++i) {
isHanging = false;
String arg = args[i];
if (arg.isEmpty()) {
isHanging = true;
continue;
}
argIndexList.add(i);
switch (arg.charAt(0)) {
case '\'':
case '"':
final StringBuilder build = new StringBuilder();
final char quotedChar = arg.charAt(0);
int endIndex;
for (endIndex = i; endIndex < args.length; ++endIndex) {
final String arg2 = args[endIndex];
if (arg2.charAt(arg2.length() - 1) == quotedChar && arg2.length() > 1) {
if (endIndex != i) build.append(' ');
build.append(arg2.substring(endIndex == i ? 1 : 0, arg2.length() - 1));
break;
} else if (endIndex == i) {
build.append(arg2.substring(1));
} else {
build.append(' ').append(arg2);
}
}
if (endIndex < args.length) {
arg = build.toString();
i = endIndex;
}
// In case there is an empty quoted string
if (arg.isEmpty()) {
continue;
}
// else raise exception about hanging quotes?
}
argList.add(arg);
}
// Then flags
List<Integer> originalArgIndices = Lists.newArrayListWithCapacity(argIndexList.size());
List<String> parsedArgs = Lists.newArrayListWithCapacity(argList.size());
Map<Character, String> valueFlags = Maps.newHashMap();
List<Character> booleanFlags = Lists.newArrayList();
for (int nextArg = 0; nextArg < argList.size(); ) {
// Fetch argument
String arg = argList.get(nextArg++);
suggestionContext = SuggestionContext.hangingValue();
// Not a flag?
if (arg.charAt(0) != '-' || arg.length() == 1 || !arg.matches("^-[a-zA-Z\\?]+$")) {
if (!isHanging) {
suggestionContext = SuggestionContext.lastValue();
}
originalArgIndices.add(argIndexList.get(nextArg - 1));
parsedArgs.add(arg);
continue;
}
// Handle flag parsing terminator --
if (arg.equals("--")) {
while (nextArg < argList.size()) {
originalArgIndices.add(argIndexList.get(nextArg));
parsedArgs.add(argList.get(nextArg++));
}
break;
}
// Go through the flag characters
for (int i = 1; i < arg.length(); ++i) {
char flagName = arg.charAt(i);
if (expectedValueFlags.contains(flagName)) {
if (valueFlags.containsKey(flagName)) {
throw new CommandException("Value flag '" + flagName + "' already given");
}
if (nextArg >= argList.size()) {
if (allowHangingFlag) {
suggestionContext = SuggestionContext.flag(flagName);
break;
} else {
throw new CommandException("No value specified for the '-" + flagName + "' flag.");
}
}
// If it is a value flag, read another argument and add it
valueFlags.put(flagName, argList.get(nextArg++));
if (!isHanging) {
suggestionContext = SuggestionContext.flag(flagName);
}
} else {
booleanFlags.add(flagName);
}
}
}
ImmutableMap.Builder<Character, String> allFlagsBuilder =
new ImmutableMap.Builder<Character, String>().putAll(valueFlags);
for (Character flag : booleanFlags) {
allFlagsBuilder.put(flag, "true");
}
this.parsedArgs = ImmutableList.copyOf(parsedArgs);
this.originalArgIndices = ImmutableList.copyOf(originalArgIndices);
this.booleanFlags = ImmutableSet.copyOf(booleanFlags);
this.valueFlags = ImmutableMap.copyOf(valueFlags);
this.allFlags = allFlagsBuilder.build();
this.suggestionContext = suggestionContext;
}