From e9271f470a5c61562d40b4ecf2fbeef123ac127a Mon Sep 17 00:00:00 2001
From: Benjamin Culkin <bjculkin@mix.wvu.edu>
Date: Mon, 11 Sep 2017 17:50:19 -0700
Subject: Start work on implementation of CL format

---
 BJC-Utils2/data/formats.sprop                      | 24 ++++++++++++++++++++++
 BJC-Utils2/data/regexes.sprop                      | 16 +++++++++++++++
 .../main/java/bjc/utils/ioutils/CLFormatter.java   | 14 +++++++++++++
 3 files changed, 54 insertions(+)
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/ioutils/CLFormatter.java

diff --git a/BJC-Utils2/data/formats.sprop b/BJC-Utils2/data/formats.sprop
index 7d8fc94..73ebc29 100644
--- a/BJC-Utils2/data/formats.sprop
+++ b/BJC-Utils2/data/formats.sprop
@@ -1,5 +1,29 @@
 # File storage for format strings
 
+#################################################
+# Generic format strings for regular expressions.
+#################################################
+
+## Format a regular expression for matching a delimiter separated list.
+## Takes two parameters
+## 1) The expression for each term
+## 2) The expression for the delimiter
+delimSeparatedList (?:%1$s(?:%2$s%1$s)*)
+
+######################################
+# CL format string regular expressions
+######################################
+
+## Format a regular expression for matching a potential CL format directive
+## Has two parts
+## 1) The optional set of prefix parameters
+## 2) The optional modifier
+## Captures three things
+## 1) The prefix parameters
+## 2) The modifiers
+## 3) The directive name
+clFormatDirective ~(?<params>%1$s)?(?<modifiers>%2$s?)(?<name>\S)
+
 ####################################################
 # Format strings for handling double-quoted strings.
 ####################################################
diff --git a/BJC-Utils2/data/regexes.sprop b/BJC-Utils2/data/regexes.sprop
index cdacea0..dadc09c 100644
--- a/BJC-Utils2/data/regexes.sprop
+++ b/BJC-Utils2/data/regexes.sprop
@@ -34,6 +34,22 @@ fpExponent [eE][+-]?
 ## NOTE: The incomplete parts are finished by where it is inserted.
 fpLeader [\x00-\x20]*[+-]?(?:NaN|Infinity|
 
+######################################
+# CL format string regular expressions
+######################################
+
+## Matches a format string prefix parameter
+## A prefix parameter is one of
+## * A signed decimal number
+## * A single character preceded by a single quote
+## * The letter V (or v)
+## * The character #
+clFormatPrefix (?:[-+]?\d+|'\S|[Vv]|#)
+
+## Match a format string modifier
+## A modifier is either : or @, or both in either order
+clFormatModifier (?:@|:|@:|:@)
+
 ##############################################
 # Miscellaneous validation regular expressions
 ##############################################
diff --git a/BJC-Utils2/src/main/java/bjc/utils/ioutils/CLFormatter.java b/BJC-Utils2/src/main/java/bjc/utils/ioutils/CLFormatter.java
new file mode 100644
index 0000000..a119c9b
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/ioutils/CLFormatter.java
@@ -0,0 +1,14 @@
+package bjc.utils.ioutils;
+
+import bjc.utils.PropertyDB;
+
+import static bjc.utils.PropertyDB.applyFormat;
+import static bjc.utils.PropertyDB.getCompiledRegex;
+import static bjc.utils.PropertyDB.getRegex;
+
+import java.util.regex.Pattern;
+
+public class CLFormatter {
+	private static final String  prefixParam  = getRegex("clFormatPrefix");
+	private static final Pattern pPrefixParam = Pattern.compile(prefixParam);
+}
-- 
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