[JGIT PATCH 1/2] Add getLong to RepositoryConfig

["Shawn O. Pearce" <spearce@spearce.org>]

This supports parsing 64 bit configuration values.  We want to use
it for values like core.packedGitLimit where a 64 bit JVM may want
to support a very large value, well past the 2 GiB barrier.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 .../org/spearce/jgit/lib/RepositoryConfigTest.java |   26 ++++++++++++++++++++
 .../src/org/spearce/jgit/lib/RepositoryConfig.java |   26 ++++++++++++++++++-
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryConfigTest.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryConfigTest.java
index ed573e1..5e2328b 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryConfigTest.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryConfigTest.java
@@ -233,6 +233,32 @@ public void testReadBoolean_OnOff2() throws IOException {
 		assertFalse(c.getBoolean("s", "b", true));
 	}
 
+	public void testReadLong() throws IOException {
+		assertReadLong(1L);
+		assertReadLong(-1L);
+		assertReadLong(Long.MIN_VALUE);
+		assertReadLong(Long.MAX_VALUE);
+		assertReadLong(4L * 1024 * 1024 * 1024, "4g");
+		assertReadLong(3L * 1024 * 1024, "3 m");
+		assertReadLong(8L * 1024, "8 k");
+
+		try {
+			assertReadLong(-1, "1.5g");
+			fail("incorrectly accepted 1.5g");
+		} catch (IllegalArgumentException e) {
+			assertEquals("Invalid integer value: s.a=1.5g", e.getMessage());
+		}
+	}
+
+	private void assertReadLong(long exp) throws IOException {
+		assertReadLong(exp, String.valueOf(exp));
+	}
+
+	private void assertReadLong(long exp, String act) throws IOException {
+		final RepositoryConfig c = read("[s]\na = " + act + "\n");
+		assertEquals(exp, c.getLong("s", null, "a", 0L));
+	}
+
 	private RepositoryConfig read(final String content) throws IOException {
 		final File p = writeTrashFile(getName() + ".config", content);
 		final RepositoryConfig c = new RepositoryConfig(null, p);
diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java b/org.spearce.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
index b816604..a339514 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
@@ -183,6 +183,28 @@ public int getInt(final String section, final String name,
 	 */
 	public int getInt(final String section, String subsection,
 			final String name, final int defaultValue) {
+		final long val = getLong(section, subsection, name, defaultValue);
+		if (Integer.MIN_VALUE <= val && val <= Integer.MAX_VALUE)
+			return (int) val;
+		throw new IllegalArgumentException("Integer value " + section + "."
+				+ name + " out of range");
+	}
+
+	/**
+	 * Obtain an integer value from the configuration.
+	 *
+	 * @param section
+	 *            section the key is grouped within.
+	 * @param subsection
+	 *            subsection name, such a remote or branch name.
+	 * @param name
+	 *            name of the key to get.
+	 * @param defaultValue
+	 *            default value to return if no value was present.
+	 * @return an integer value from the configuration, or defaultValue.
+	 */
+	public long getLong(final String section, String subsection,
+			final String name, final long defaultValue) {
 		final String str = getString(section, subsection, name);
 		if (str == null)
 			return defaultValue;
@@ -191,7 +213,7 @@ public int getInt(final String section, String subsection,
 		if (n.length() == 0)
 			return defaultValue;
 
-		int mul = 1;
+		long mul = 1;
 		switch (Character.toLowerCase(n.charAt(n.length() - 1))) {
 		case 'g':
 			mul = 1024 * 1024 * 1024;
@@ -209,7 +231,7 @@ public int getInt(final String section, String subsection,
 			return defaultValue;
 
 		try {
-			return mul * Integer.parseInt(n);
+			return mul * Long.parseLong(n);
 		} catch (NumberFormatException nfe) {
 			throw new IllegalArgumentException("Invalid integer value: "
 					+ section + "." + name + "=" + str);
-- 
1.6.3.2.367.gf0de