From 6d781f3b203397196d200f0b80a8fe358ec8f53c Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Thu, 6 Sep 2018 17:59:51 -0300
Subject: Implement tabulate directive

---
 .../java/bjc/utils/ioutils/format/CLFormatter.java | 15 +---
 .../format/directives/TabulateDirective.java       | 80 ++++++++++++++++++++++
 2 files changed, 83 insertions(+), 12 deletions(-)
 create mode 100644 base/src/main/java/bjc/utils/ioutils/format/directives/TabulateDirective.java

(limited to 'base/src/main/java')

diff --git a/base/src/main/java/bjc/utils/ioutils/format/CLFormatter.java b/base/src/main/java/bjc/utils/ioutils/format/CLFormatter.java
index f0fd404..1605a75 100644
--- a/base/src/main/java/bjc/utils/ioutils/format/CLFormatter.java
+++ b/base/src/main/java/bjc/utils/ioutils/format/CLFormatter.java
@@ -65,6 +65,8 @@ public class CLFormatter {
 		builtinDirectives.put("^", new EscapeDirective());
 		builtinDirectives.put("[", new ConditionalDirective());
 		builtinDirectives.put("{", new IterationDirective());
+
+		builtinDirectives.put("T", new TabulateDirective());
 	}
 
 	/**
@@ -229,22 +231,11 @@ public class CLFormatter {
 				throw new IllegalArgumentException("Found conditional-end outside of conditional.");
 			case ";":
 				throw new IllegalArgumentException(
-						"Found conditional-seperator outside of conditional.");
+						"Found seperator outside of block.");
 			case "}":
 				throw new IllegalArgumentException("Found iteration-end outside of iteration");
-			case "T":
 			case "<":
 			case ">":
-				/*
-				 * @TODO Figure out how to implement
-				 * tabulation/justification in a reasonable
-				 * manner.
-				 *
-				 * 9/5/18
-				 *
-				 * We did, but the rest of the code needs to be
-				 * converted to use ReportWriter instead
-				 */
 				throw new IllegalArgumentException("Layout-control directives aren't implemented yet.");
 			case "F":
 			case "E":
diff --git a/base/src/main/java/bjc/utils/ioutils/format/directives/TabulateDirective.java b/base/src/main/java/bjc/utils/ioutils/format/directives/TabulateDirective.java
new file mode 100644
index 0000000..7775904
--- /dev/null
+++ b/base/src/main/java/bjc/utils/ioutils/format/directives/TabulateDirective.java
@@ -0,0 +1,80 @@
+package bjc.utils.ioutils.format.directives;
+
+import java.io.IOException;
+import java.util.regex.Matcher;
+
+import bjc.utils.esodata.Tape;
+
+import bjc.utils.ioutils.ReportWriter;
+import bjc.utils.ioutils.format.*;
+
+public class TabulateDirective implements Directive {
+	public void format(ReportWriter rw, Object item, CLModifiers mods, CLParameters arrParams, Tape<Object> tParams,
+			Matcher dirMatcher, CLFormatter fmt) throws IOException {
+		// Unsupported feature.
+		//
+		// I can't really make out what this is supposed to do from the
+		// documentation, but I suspect that it depends of font glyph
+		// size, not character positions
+		if (mods.colonMod) {
+			throw new UnsupportedOperationException("Colon mod is not supported for T directive");
+		}
+
+		// Support for a possible future feature
+		char padchar = ' ';
+
+		if (mods.atMod) {
+			int colrel = 1, colinc = 1;
+
+			if (arrParams.length() > 2) {
+				colinc = arrParams.getIntDefault(1, "column increment", 'T', 1);
+			}
+
+			if (arrParams.length() > 1) {
+				colrel = arrParams.getIntDefault(0, "relative column number", 'T', 1);
+			}
+
+			for (int i = 0; i < colrel; i++) {
+				rw.write(padchar);
+			}
+
+			int currCol = rw.getLinePos();
+
+			int nSpaces = 0;
+
+			while ((currCol + nSpaces) % colinc != 0) nSpaces++;
+
+			for (int i = 0; i < nSpaces; i++) {
+				rw.write(padchar);
+			}
+		} else {
+			int colnum = 1, colinc = 1;
+
+			if (arrParams.length() > 2) {
+				colinc = arrParams.getIntDefault(1, "column increment", 'T', 1);
+			}
+
+			if (arrParams.length() > 1) {
+				colnum = arrParams.getIntDefault(0, "column number", 'T', 1);
+			}
+
+			int currCol = rw.getLinePos();
+
+			if (currCol < colnum) {
+				for (int i = currCol; i < colnum; i++) {
+					rw.write(padchar);
+				}
+			} else {
+				if (colinc == 0) return;
+
+				int k = 0;
+
+				while (colnum > (currCol + (k * colinc))) k++;
+
+				for (int i = currCol; i < colnum; i++) {
+					rw.write(padchar);
+				}
+			}
+		}
+	}
+}
-- 
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