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authorBrian Carlstrom <bdc@google.com>2013-07-12 13:46:57 -0700
committerBrian Carlstrom <bdc@google.com>2013-07-12 17:49:01 -0700
commit7940e44f4517de5e2634a7e07d58d0fb26160513 (patch)
treeac90242d96229a6942f6e24ab137bc1f8f2e0025 /runtime/utf.cc
parent5cd9e3b122f276f610980cbaf0d2ad6ed4cd9088 (diff)
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Create separate Android.mk for main build targets
The runtime, compiler, dex2oat, and oatdump now are in seperate trees to prevent dependency creep. They can now be individually built without rebuilding the rest of the art projects. dalvikvm and jdwpspy were already this way. Builds in the art directory should behave as before, building everything including tests. Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81
Diffstat (limited to 'runtime/utf.cc')
-rw-r--r--runtime/utf.cc156
1 files changed, 156 insertions, 0 deletions
diff --git a/runtime/utf.cc b/runtime/utf.cc
new file mode 100644
index 0000000000..1add7d9a68
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+++ b/runtime/utf.cc
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "utf.h"
+
+#include "base/logging.h"
+#include "mirror/array.h"
+#include "mirror/object-inl.h"
+
+namespace art {
+
+size_t CountModifiedUtf8Chars(const char* utf8) {
+ size_t len = 0;
+ int ic;
+ while ((ic = *utf8++) != '\0') {
+ len++;
+ if ((ic & 0x80) == 0) {
+ // one-byte encoding
+ continue;
+ }
+ // two- or three-byte encoding
+ utf8++;
+ if ((ic & 0x20) == 0) {
+ // two-byte encoding
+ continue;
+ }
+ // three-byte encoding
+ utf8++;
+ }
+ return len;
+}
+
+void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_data_out, const char* utf8_data_in) {
+ while (*utf8_data_in != '\0') {
+ *utf16_data_out++ = GetUtf16FromUtf8(&utf8_data_in);
+ }
+}
+
+void ConvertUtf16ToModifiedUtf8(char* utf8_out, const uint16_t* utf16_in, size_t char_count) {
+ while (char_count--) {
+ uint16_t ch = *utf16_in++;
+ if (ch > 0 && ch <= 0x7f) {
+ *utf8_out++ = ch;
+ } else {
+ if (ch > 0x07ff) {
+ *utf8_out++ = (ch >> 12) | 0xe0;
+ *utf8_out++ = ((ch >> 6) & 0x3f) | 0x80;
+ *utf8_out++ = (ch & 0x3f) | 0x80;
+ } else /*(ch > 0x7f || ch == 0)*/ {
+ *utf8_out++ = (ch >> 6) | 0xc0;
+ *utf8_out++ = (ch & 0x3f) | 0x80;
+ }
+ }
+ }
+}
+
+int32_t ComputeUtf16Hash(const mirror::CharArray* chars, int32_t offset,
+ size_t char_count) {
+ int32_t hash = 0;
+ for (size_t i = 0; i < char_count; i++) {
+ hash = hash * 31 + chars->Get(offset + i);
+ }
+ return hash;
+}
+
+int32_t ComputeUtf16Hash(const uint16_t* chars, size_t char_count) {
+ int32_t hash = 0;
+ while (char_count--) {
+ hash = hash * 31 + *chars++;
+ }
+ return hash;
+}
+
+
+uint16_t GetUtf16FromUtf8(const char** utf8_data_in) {
+ uint8_t one = *(*utf8_data_in)++;
+ if ((one & 0x80) == 0) {
+ // one-byte encoding
+ return one;
+ }
+ // two- or three-byte encoding
+ uint8_t two = *(*utf8_data_in)++;
+ if ((one & 0x20) == 0) {
+ // two-byte encoding
+ return ((one & 0x1f) << 6) | (two & 0x3f);
+ }
+ // three-byte encoding
+ uint8_t three = *(*utf8_data_in)++;
+ return ((one & 0x0f) << 12) | ((two & 0x3f) << 6) | (three & 0x3f);
+}
+
+int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1, const char* utf8_2) {
+ for (;;) {
+ if (*utf8_1 == '\0') {
+ return (*utf8_2 == '\0') ? 0 : -1;
+ } else if (*utf8_2 == '\0') {
+ return 1;
+ }
+
+ int c1 = GetUtf16FromUtf8(&utf8_1);
+ int c2 = GetUtf16FromUtf8(&utf8_2);
+
+ if (c1 != c2) {
+ return c1 > c2 ? 1 : -1;
+ }
+ }
+}
+
+int CompareModifiedUtf8ToUtf16AsCodePointValues(const char* utf8_1, const uint16_t* utf8_2) {
+ for (;;) {
+ if (*utf8_1 == '\0') {
+ return (*utf8_2 == '\0') ? 0 : -1;
+ } else if (*utf8_2 == '\0') {
+ return 1;
+ }
+
+ int c1 = GetUtf16FromUtf8(&utf8_1);
+ int c2 = *utf8_2;
+
+ if (c1 != c2) {
+ return c1 > c2 ? 1 : -1;
+ }
+ }
+}
+
+size_t CountUtf8Bytes(const uint16_t* chars, size_t char_count) {
+ size_t result = 0;
+ while (char_count--) {
+ uint16_t ch = *chars++;
+ if (ch > 0 && ch <= 0x7f) {
+ ++result;
+ } else {
+ if (ch > 0x7ff) {
+ result += 3;
+ } else {
+ result += 2;
+ }
+ }
+ }
+ return result;
+}
+
+} // namespace art