auto import from //depot/cupcake/@135843
diff --git a/android/sqlite3_android.cpp b/android/sqlite3_android.cpp
new file mode 100644
index 0000000..1723c1e
--- /dev/null
+++ b/android/sqlite3_android.cpp
@@ -0,0 +1,396 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#define LOG_TAG "sqlite3_android"
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <unicode/ucol.h>
+#include <unicode/ustring.h>
+#include <cutils/log.h>
+
+#include "sqlite3_android.h"
+#include "PhoneNumberUtils.h"
+
+#define ENABLE_ANDROID_LOG 0
+
+static int collate16(void *p, int n1, const void *v1, int n2, const void *v2)
+{
+ UCollator *coll = (UCollator *) p;
+ UCollationResult result = ucol_strcoll(coll, (const UChar *) v1, n1,
+ (const UChar *) v2, n2);
+
+ if (result == UCOL_LESS) {
+ return -1;
+ } else if (result == UCOL_GREATER) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static int collate8(void *p, int n1, const void *v1, int n2, const void *v2)
+{
+ UCollator *coll = (UCollator *) p;
+ UCharIterator i1, i2;
+ UErrorCode status = U_ZERO_ERROR;
+
+ uiter_setUTF8(&i1, (const char *) v1, n1);
+ uiter_setUTF8(&i2, (const char *) v2, n2);
+
+ UCollationResult result = ucol_strcollIter(coll, &i1, &i2, &status);
+
+ if (U_FAILURE(status)) {
+// LOGE("Collation iterator error: %d\n", status);
+ }
+
+ if (result == UCOL_LESS) {
+ return -1;
+ } else if (result == UCOL_GREATER) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void phone_numbers_equal(sqlite3_context * context, int argc, sqlite3_value ** argv)
+{
+ if (argc != 2) {
+ sqlite3_result_int(context, 0);
+ return;
+ }
+
+ char const * num1 = (char const *)sqlite3_value_text(argv[0]);
+ char const * num2 = (char const *)sqlite3_value_text(argv[1]);
+
+ if (num1 == NULL || num2 == NULL) {
+ sqlite3_result_null(context);
+ return;
+ }
+
+ bool equal = android::phone_number_compare(num1, num2);
+
+ if (equal) {
+ sqlite3_result_int(context, 1);
+ } else {
+ sqlite3_result_int(context, 0);
+ }
+}
+
+#if ENABLE_ANDROID_LOG
+static void android_log(sqlite3_context * context, int argc, sqlite3_value ** argv)
+{
+ char const * tag = "sqlite_trigger";
+ char const * msg = "";
+ int msgIndex = 0;
+
+ switch (argc) {
+ case 2:
+ tag = (char const *)sqlite3_value_text(argv[0]);
+ if (tag == NULL) {
+ tag = "sqlite_trigger";
+ }
+ msgIndex = 1;
+ case 1:
+ msg = (char const *)sqlite3_value_text(argv[msgIndex]);
+ if (msg == NULL) {
+ msg = "";
+ }
+ LOG(LOG_INFO, tag, msg);
+ sqlite3_result_int(context, 1);
+ return;
+
+ default:
+ sqlite3_result_int(context, 0);
+ return;
+ }
+}
+#endif
+
+static void delete_file(sqlite3_context * context, int argc, sqlite3_value ** argv)
+{
+ if (argc != 1) {
+ sqlite3_result_int(context, 0);
+ return;
+ }
+
+ char const * path = (char const *)sqlite3_value_text(argv[0]);
+ if (path == NULL) {
+ sqlite3_result_null(context);
+ return;
+ }
+
+ if (strncmp("/sdcard/", path, 8) != 0) {
+ sqlite3_result_null(context);
+ return;
+ }
+
+ int err = unlink(path);
+ if (err != -1) {
+ // No error occured, return true
+ sqlite3_result_int(context, 1);
+ } else {
+ // An error occured, return false
+ sqlite3_result_int(context, 0);
+ }
+}
+
+static void tokenize_auxdata_delete(void * data)
+{
+ sqlite3_stmt * statement = (sqlite3_stmt *)data;
+ sqlite3_finalize(statement);
+}
+
+static void base16Encode(char* dest, const char* src, uint32_t size)
+{
+ static const char * BASE16_TABLE = "0123456789abcdef";
+ for (uint32_t i = 0; i < size; i++) {
+ char ch = *src++;
+ *dest++ = BASE16_TABLE[ (ch & 0xf0) >> 4 ];
+ *dest++ = BASE16_TABLE[ (ch & 0x0f) ];
+ }
+}
+
+struct SqliteUserData {
+ sqlite3 * handle;
+ UCollator* collator;
+};
+
+/**
+ * This function is invoked as:
+ *
+ * _TOKENIZE('<token_table>', <data_row_id>, <data>, <delimiter>)
+ *
+ * It will then split data on each instance of delimiter and insert each token
+ * into token_table's 'token' column with data_row_id in the 'source' column.
+ * The function returns the number of tokens generated.
+ */
+static void tokenize(sqlite3_context * context, int argc, sqlite3_value ** argv)
+{
+ //LOGD("enter tokenize");
+ int err;
+
+ if (argc != 4) {
+ LOGE("Tokenize requires 4 arguments");
+ sqlite3_result_null(context);
+ return;
+ }
+
+ sqlite3 * handle = sqlite3_context_db_handle(context);
+ UCollator* collator = (UCollator*)sqlite3_user_data(context);
+ char const * tokenTable = (char const *)sqlite3_value_text(argv[0]);
+ if (tokenTable == NULL) {
+ LOGE("tokenTable null");
+ sqlite3_result_null(context);
+ return;
+ }
+
+ // Get or create the prepared statement for the insertions
+ sqlite3_stmt * statement = (sqlite3_stmt *)sqlite3_get_auxdata(context, 0);
+ if (!statement) {
+ char * sql = sqlite3_mprintf("INSERT INTO %s (token, source) VALUES (?, ?);", tokenTable);
+ err = sqlite3_prepare_v2(handle, sql, -1, &statement, NULL);
+ sqlite3_free(sql);
+ if (err) {
+ LOGE("prepare failed");
+ sqlite3_result_null(context);
+ return;
+ }
+ // This binds the statement to the table it was compiled against, which is argv[0].
+ // If this function is ever called with a different table the finalizer will be called
+ // and sqlite3_get_auxdata() will return null above, forcing a recompile for the new table.
+ sqlite3_set_auxdata(context, 0, statement, tokenize_auxdata_delete);
+ } else {
+ // Reset the cached statement so that binding the row ID will work properly
+ sqlite3_reset(statement);
+ }
+
+ // Bind the row ID of the source row
+ int64_t rowID = sqlite3_value_int64(argv[1]);
+ err = sqlite3_bind_int64(statement, 2, rowID);
+ if (err != SQLITE_OK) {
+ LOGE("bind failed");
+ sqlite3_result_null(context);
+ return;
+ }
+
+ // Get the raw bytes for the string to tokenize
+ // the string will be modified by following code
+ // however, sqlite did not reuse the string, so it is safe to not dup it
+ UChar * origData = (UChar *)sqlite3_value_text16(argv[2]);
+ if (origData == NULL) {
+ sqlite3_result_null(context);
+ return;
+ }
+
+ // Get the raw bytes for the delimiter
+ const UChar * delim = (const UChar *)sqlite3_value_text16(argv[3]);
+ if (delim == NULL) {
+ LOGE("can't get delimiter");
+ sqlite3_result_null(context);
+ return;
+ }
+
+ UChar * token = NULL;
+ UChar *state;
+ int numTokens = 0;
+
+ do {
+ if (numTokens == 0) {
+ token = origData;
+ }
+
+ // Reset the program so we can use it to perform the insert
+ sqlite3_reset(statement);
+ UErrorCode status = U_ZERO_ERROR;
+ char keybuf[1024];
+ uint32_t result = ucol_getSortKey(collator, token, -1, (uint8_t*)keybuf, sizeof(keybuf)-1);
+ if (result > sizeof(keybuf)) {
+ // TODO allocate memory for this super big string
+ LOGE("ucol_getSortKey needs bigger buffer %d", result);
+ break;
+ }
+ uint32_t keysize = result-1;
+ uint32_t base16Size = keysize*2;
+ char *base16buf = (char*)malloc(base16Size);
+ base16Encode(base16buf, keybuf, keysize);
+ err = sqlite3_bind_text(statement, 1, base16buf, base16Size, SQLITE_STATIC);
+
+ if (err != SQLITE_OK) {
+ LOGE(" sqlite3_bind_text16 error %d", err);
+ free(base16buf);
+ break;
+ }
+
+ err = sqlite3_step(statement);
+ free(base16buf);
+
+ if (err != SQLITE_DONE) {
+ LOGE(" sqlite3_step error %d", err);
+ break;
+ }
+ numTokens++;
+ if (numTokens == 1) {
+ // first call
+ u_strtok_r(origData, delim, &state);
+ }
+ } while ((token = u_strtok_r(NULL, delim, &state)) != NULL);
+ sqlite3_result_int(context, numTokens);
+}
+
+static void localized_collator_dtor(UCollator* collator)
+{
+ ucol_close(collator);
+}
+
+#define LOCALIZED_COLLATOR_NAME "LOCALIZED"
+
+extern "C" int register_localized_collators(sqlite3* handle, const char* systemLocale, int utf16Storage)
+{
+ int err;
+ UErrorCode status = U_ZERO_ERROR;
+ void* icudata;
+
+ UCollator* collator = ucol_open(systemLocale, &status);
+ if (U_FAILURE(status)) {
+ return -1;
+ }
+
+ ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_PRIMARY, &status);
+ if (U_FAILURE(status)) {
+ return -1;
+ }
+
+ status = U_ZERO_ERROR;
+ char buf[1024];
+ int n = ucol_getShortDefinitionString(collator, NULL, buf, 1024, &status);
+
+ if (utf16Storage) {
+ err = sqlite3_create_collation_v2(handle, LOCALIZED_COLLATOR_NAME, SQLITE_UTF16, collator,
+ collate16, (void(*)(void*))localized_collator_dtor);
+ } else {
+ err = sqlite3_create_collation_v2(handle, LOCALIZED_COLLATOR_NAME, SQLITE_UTF8, collator,
+ collate8, (void(*)(void*))localized_collator_dtor);
+ }
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+ // Register the _TOKENIZE function
+ err = sqlite3_create_function(handle, "_TOKENIZE", 4, SQLITE_UTF16, collator, tokenize, NULL, NULL);
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+ return SQLITE_OK;
+}
+
+
+extern "C" int register_android_functions(sqlite3 * handle, int utf16Storage)
+{
+ int err;
+ UErrorCode status = U_ZERO_ERROR;
+
+ UCollator * collator = ucol_open(NULL, &status);
+ if (U_FAILURE(status)) {
+ return -1;
+ }
+
+ if (utf16Storage) {
+ // Note that text should be stored as UTF-16
+ err = sqlite3_exec(handle, "PRAGMA encoding = 'UTF-16'", 0, 0, 0);
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+ // Register the UNICODE collation
+ err = sqlite3_create_collation_v2(handle, "UNICODE", SQLITE_UTF16, collator, collate16,
+ (void(*)(void*))localized_collator_dtor);
+ } else {
+ err = sqlite3_create_collation_v2(handle, "UNICODE", SQLITE_UTF8, collator, collate8,
+ (void(*)(void*))localized_collator_dtor);
+ }
+
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+ // Register the PHONE_NUM_EQUALS function
+ err = sqlite3_create_function(handle, "PHONE_NUMBERS_EQUAL", 2, SQLITE_UTF8, NULL, phone_numbers_equal, NULL, NULL);
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+ // Register the _DELETE_FILE function
+ err = sqlite3_create_function(handle, "_DELETE_FILE", 1, SQLITE_UTF8, NULL, delete_file, NULL, NULL);
+ if (err != SQLITE_OK) {
+ return err;
+ }
+
+#if ENABLE_ANDROID_LOG
+ // Register the _LOG function
+ err = sqlite3_create_function(handle, "_LOG", 1, SQLITE_UTF8, NULL, android_log, NULL, NULL);
+ if (err != SQLITE_OK) {
+ return err;
+ }
+#endif
+
+ return SQLITE_OK;
+}
+