summaryrefslogtreecommitdiff
path: root/libjava/java/text/natCollator.cc
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/java/text/natCollator.cc
downloadcbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.bz2
cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'libjava/java/text/natCollator.cc')
-rw-r--r--libjava/java/text/natCollator.cc74
1 files changed, 74 insertions, 0 deletions
diff --git a/libjava/java/text/natCollator.cc b/libjava/java/text/natCollator.cc
new file mode 100644
index 000000000..676a4a41a
--- /dev/null
+++ b/libjava/java/text/natCollator.cc
@@ -0,0 +1,74 @@
+// natCollator.cc - Native code for collation.
+
+/* Copyright (C) 1999 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+// Written by Tom Tromey <tromey@cygnus.com>.
+
+#include <config.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <java/text/Collator.h>
+#include <java/lang/StringBuffer.h>
+
+#include <java-chardecomp.h>
+
+void
+java::text::Collator::decomposeCharacter (jchar c,
+ java::lang::StringBuffer *buf)
+{
+ if (decmp == NO_DECOMPOSITION)
+ {
+ buf->append(c);
+ return;
+ }
+
+ const struct decomp_entry *base;
+ int high;
+
+ if (decmp == FULL_DECOMPOSITION)
+ {
+ base = full_decomposition;
+ high = sizeof (full_decomposition) / sizeof (struct decomp_entry);
+ }
+ else
+ {
+ base = canonical_decomposition;
+ high = sizeof (canonical_decomposition) / sizeof (struct decomp_entry);
+ }
+
+ // FIXME: this is probably a bit slow for the task at hand.
+ int i = high / 2;
+ int low = 0;
+ while (true)
+ {
+ if (c < base[i].key)
+ high = i;
+ else if (c > base[i].key)
+ low = i;
+ else
+ break;
+
+ int old = i;
+ i = (high + low) / 2;
+ if (i == old)
+ {
+ // Not in table, so it expands to itself.
+ buf->append(c);
+ return;
+ }
+ }
+
+ for (int j = 0; base[i].value[j] != '\0'; j += 2)
+ {
+ jchar x = (base[i].value[j] << 8) | (base[i].value[j + 1]);
+ buf->append (x);
+ }
+}