com.codetaco.cli.impl.input.AbstractInputParser Maven / Gradle / Ivy
package com.codetaco.cli.impl.input;
import com.codetaco.cli.impl.type.AbstractCLA;
import java.util.List;
/**
*
* Abstract AbstractInputParser class.
*
*
* @author Chris DeGreef [email protected]
*/
abstract public class AbstractInputParser {
/**
* Constant OPEN_GROUP="["
*/
protected static final String OPEN_GROUP = "[";
/**
* Constant CLOSE_GROUP="]"
*/
protected static final String CLOSE_GROUP = "]";
/**
* Constant QUOTER='"'
*/
protected static final char QUOTER = '"';
static private String dashed(final char commandPrefix, final String key) {
if (key.length() == 1) {
return commandPrefix + key;
}
return "" + commandPrefix + commandPrefix + key;
}
/**
*
* quote.
*
*
* @param value a {@link java.lang.String} object.
* @return a {@link java.lang.String} object.
*/
static protected String quote(final String value) {
final StringBuilder out = new StringBuilder();
AbstractCLA.uncompileQuoter(out, value);
return out.toString();
}
/**
*
* Constructor for AbstractInputParser.
*
*/
public AbstractInputParser() {
super();
}
/**
*
* buildCommandLine.
*
*
* @param out a {@link java.lang.StringBuilder} object.
* @param depth a {@link java.util.List} object.
* @param line a {@link java.util.List} object.
* @param value a {@link java.lang.String} object.
*/
protected void buildCommandLine(final StringBuilder out, final List depth, final List line,
final String value) {
for (int n = 0; n < line.size(); n++) {
if (depth.size() <= n) {
/*
* This is a new command
*/
depth.add(line.get(n));
/*
* an empty keyword means a positional parameter
*/
if (line.get(n).key.length() > 0) {
out.append("--" + line.get(n).key);
}
/*
* if the depth so far is shorter than the namespace then it is
* necessary to start a group
*/
if (n < line.size() - 1) {
out.append(OPEN_GROUP);
}
} else if (depth.get(n).key.equalsIgnoreCase(line.get(n).key)) {
/*
* This is a subsequent command for the same namespace at this
* level. Check the occurrence to see if a new multiple group )(
* should be started. If the occurrence is the same then the
* subsequent namespace will make it unique and this specific
* node in the namespace can be safely ignored. In essence we
* are within a sub-structure and only change instance
* variables.
*/
if (depth.get(n).occurrance == line.get(n).occurrance) {
continue;
}
/*
* A new occurrence of the same namespace node. So we close off
* deeper groups.
*/
for (int d = depth.size() - 1; d > n; d--) {
depth.remove(d);
out.append(CLOSE_GROUP);
}
depth.get(n).occurrance = line.get(n).occurrance;
if (n < line.size() - 1) {
out.append(OPEN_GROUP);
}
continue;
} else {
for (int d = depth.size() - 1; d > n; d--) {
depth.remove(d);
out.append(CLOSE_GROUP);
}
depth.get(n).key = line.get(n).key;
depth.get(n).occurrance = line.get(n).occurrance;
/*
* an empty keyword means a positional parameter
*/
if (line.get(n).key.length() > 0) {
out.append("--" + line.get(n).key);
}
if (n < line.size() - 1) {
out.append(OPEN_GROUP);
}
continue;
}
}
/*
* booleans have no value
*/
if (value.length() > 0) {
out.append(quote(value));
}
}
/**
*
* buildTokens.
*
*
* @param commandPrefix a char.
* @param tokens a {@link java.util.List} object.
* @param depth a {@link java.util.List} object.
* @param line a {@link java.util.List} object.
* @param value a {@link java.lang.String} object.
*/
protected void buildTokens(final char commandPrefix, final List tokens, final List depth,
final List line, final String value) {
for (int n = 0; n < line.size(); n++) {
if (depth.size() <= n) {
/*
* This is a new command
*/
depth.add(line.get(n));
/*
* an empty keyword means a positional parameter
*/
if (line.get(n).key.length() > 0) {
tokens.add(new Token(commandPrefix, dashed(commandPrefix, line.get(n).key), 0, 0, false));
}
/*
* if the depth so far is shorter than the namespace then it is
* necessary to start a group
*/
if (n < line.size() - 1) {
tokens.add(new Token(commandPrefix, OPEN_GROUP, 0, 0, false));
}
} else if (depth.get(n).key.equalsIgnoreCase(line.get(n).key)) {
/*
* This is a subsequent command for the same namespace at this
* level. Check the occurrence to see if a new multiple group )(
* should be started. If the occurrence is the same then the
* subsequent namespace will make it unique and this specific
* node in the namespace can be safely ignored. In essence we
* are within a sub-structure and only change instance
* variables.
*/
if (depth.get(n).occurrance == line.get(n).occurrance) {
continue;
}
/*
* A new occurrence of the same namespace node. So we close off
* deeper groups.
*/
for (int d = depth.size() - 1; d > n; d--) {
depth.remove(d);
tokens.add(new Token(commandPrefix, CLOSE_GROUP, 0, 0, false));
}
depth.get(n).occurrance = line.get(n).occurrance;
if (n < line.size() - 1) {
tokens.add(new Token(commandPrefix, OPEN_GROUP, 0, 0, false));
}
continue;
} else {
for (int d = depth.size() - 1; d > n; d--) {
depth.remove(d);
tokens.add(new Token(commandPrefix, CLOSE_GROUP, 0, 0, false));
}
depth.get(n).key = line.get(n).key;
depth.get(n).occurrance = line.get(n).occurrance;
/*
* an empty keyword means a positional parameter
*/
if (line.get(n).key.length() > 0) {
tokens.add(new Token(commandPrefix, dashed(commandPrefix, line.get(n).key), 0, 0, false));
}
if (n < line.size() - 1) {
tokens.add(new Token(commandPrefix, OPEN_GROUP, 0, 0, false));
}
continue;
}
}
/*
* booleans have no value
*/
if (value != null && value.length() > 0) {
tokens.add(new Token(commandPrefix, value, 0, 0, true));
}
}
}
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