libcutils: remove unused "jstring.h".
Test: treehugger
Change-Id: I56989862a51a6c8785f22f783027d50c42be650c
diff --git a/libcutils/Android.bp b/libcutils/Android.bp
index 5144fc6..b9420d4 100644
--- a/libcutils/Android.bp
+++ b/libcutils/Android.bp
@@ -67,7 +67,6 @@
"native_handle.cpp",
"record_stream.cpp",
"sockets.cpp",
- "strdup16to8.cpp",
"strlcpy.c",
"threads.cpp",
],
diff --git a/libcutils/include/cutils/jstring.h b/libcutils/include/cutils/jstring.h
deleted file mode 100644
index 6ede786..0000000
--- a/libcutils/include/cutils/jstring.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2006 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.
- */
-
-#pragma once
-
-#include <stdint.h>
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if __STDC_VERSION__ < 201112L && __cplusplus < 201103L
- typedef uint16_t char16_t;
-#endif
- // otherwise char16_t is a keyword with the right semantics
-
-extern char * strndup16to8 (const char16_t* s, size_t n);
-extern size_t strnlen16to8 (const char16_t* s, size_t n);
-extern char * strncpy16to8 (char *dest, const char16_t*s, size_t n);
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/libcutils/include_vndk/cutils/jstring.h b/libcutils/include_vndk/cutils/jstring.h
deleted file mode 120000
index f3fd546..0000000
--- a/libcutils/include_vndk/cutils/jstring.h
+++ /dev/null
@@ -1 +0,0 @@
-../../include/cutils/jstring.h
\ No newline at end of file
diff --git a/libcutils/strdup16to8.cpp b/libcutils/strdup16to8.cpp
deleted file mode 100644
index d89181e..0000000
--- a/libcutils/strdup16to8.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/* libs/cutils/strdup16to8.c
-**
-** Copyright 2006, 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 <cutils/jstring.h>
-
-#include <assert.h>
-#include <limits.h> /* for SIZE_MAX */
-#include <stdlib.h>
-
-
-/**
- * Given a UTF-16 string, compute the length of the corresponding UTF-8
- * string in bytes.
- */
-extern size_t strnlen16to8(const char16_t* utf16Str, size_t len)
-{
- size_t utf8Len = 0;
-
- /* A small note on integer overflow. The result can
- * potentially be as big as 3*len, which will overflow
- * for len > SIZE_MAX/3.
- *
- * Moreover, the result of a strnlen16to8 is typically used
- * to allocate a destination buffer to strncpy16to8 which
- * requires one more byte to terminate the UTF-8 copy, and
- * this is generally done by careless users by incrementing
- * the result without checking for integer overflows, e.g.:
- *
- * dst = malloc(strnlen16to8(utf16,len)+1)
- *
- * Due to this, the following code will try to detect
- * overflows, and never return more than (SIZE_MAX-1)
- * when it detects one. A careless user will try to malloc
- * SIZE_MAX bytes, which will return NULL which can at least
- * be detected appropriately.
- *
- * As far as I know, this function is only used by strndup16(),
- * but better be safe than sorry.
- */
-
- /* Fast path for the usual case where 3*len is < SIZE_MAX-1.
- */
- if (len < (SIZE_MAX-1)/3) {
- while (len != 0) {
- len--;
- unsigned int uic = *utf16Str++;
-
- if (uic > 0x07ff)
- utf8Len += 3;
- else if (uic > 0x7f || uic == 0)
- utf8Len += 2;
- else
- utf8Len++;
- }
- return utf8Len;
- }
-
- /* The slower but paranoid version */
- while (len != 0) {
- len--;
- unsigned int uic = *utf16Str++;
- size_t utf8Cur = utf8Len;
-
- if (uic > 0x07ff)
- utf8Len += 3;
- else if (uic > 0x7f || uic == 0)
- utf8Len += 2;
- else
- utf8Len++;
-
- if (utf8Len < utf8Cur) /* overflow detected */
- return SIZE_MAX-1;
- }
-
- /* don't return SIZE_MAX to avoid common user bug */
- if (utf8Len == SIZE_MAX)
- utf8Len = SIZE_MAX-1;
-
- return utf8Len;
-}
-
-
-/**
- * Convert a Java-Style UTF-16 string + length to a JNI-Style UTF-8 string.
- *
- * This basically means: embedded \0's in the UTF-16 string are encoded
- * as "0xc0 0x80"
- *
- * Make sure you allocate "utf8Str" with the result of strlen16to8() + 1,
- * not just "len".
- *
- * Please note, a terminated \0 is always added, so your result will always
- * be "strlen16to8() + 1" bytes long.
- */
-extern char* strncpy16to8(char* utf8Str, const char16_t* utf16Str, size_t len)
-{
- char* utf8cur = utf8Str;
-
- /* Note on overflows: We assume the user did check the result of
- * strnlen16to8() properly or at a minimum checked the result of
- * its malloc(SIZE_MAX) in case of overflow.
- */
- while (len != 0) {
- len--;
- unsigned int uic = *utf16Str++;
-
- if (uic > 0x07ff) {
- *utf8cur++ = (uic >> 12) | 0xe0;
- *utf8cur++ = ((uic >> 6) & 0x3f) | 0x80;
- *utf8cur++ = (uic & 0x3f) | 0x80;
- } else if (uic > 0x7f || uic == 0) {
- *utf8cur++ = (uic >> 6) | 0xc0;
- *utf8cur++ = (uic & 0x3f) | 0x80;
- } else {
- *utf8cur++ = uic;
-
- if (uic == 0) {
- break;
- }
- }
- }
-
- *utf8cur = '\0';
-
- return utf8Str;
-}
-
-/**
- * Convert a UTF-16 string to UTF-8.
- *
- */
-char * strndup16to8 (const char16_t* s, size_t n)
-{
- if (s == NULL) {
- return NULL;
- }
-
- size_t len = strnlen16to8(s, n);
-
- /* We are paranoid, and we check for SIZE_MAX-1
- * too since it is an overflow value for our
- * strnlen16to8 implementation.
- */
- if (len >= SIZE_MAX-1)
- return NULL;
-
- char* ret = static_cast<char*>(malloc(len + 1));
- if (ret == NULL)
- return NULL;
-
- strncpy16to8 (ret, s, n);
-
- return ret;
-}