initial commit, 4.5 stable
Some checks failed
🔗 GHA / 📊 Static checks (push) Has been cancelled
🔗 GHA / 🤖 Android (push) Has been cancelled
🔗 GHA / 🍏 iOS (push) Has been cancelled
🔗 GHA / 🐧 Linux (push) Has been cancelled
🔗 GHA / 🍎 macOS (push) Has been cancelled
🔗 GHA / 🏁 Windows (push) Has been cancelled
🔗 GHA / 🌐 Web (push) Has been cancelled
Some checks failed
🔗 GHA / 📊 Static checks (push) Has been cancelled
🔗 GHA / 🤖 Android (push) Has been cancelled
🔗 GHA / 🍏 iOS (push) Has been cancelled
🔗 GHA / 🐧 Linux (push) Has been cancelled
🔗 GHA / 🍎 macOS (push) Has been cancelled
🔗 GHA / 🏁 Windows (push) Has been cancelled
🔗 GHA / 🌐 Web (push) Has been cancelled
This commit is contained in:
85
thirdparty/icu4c/common/bytestream.cpp
vendored
Normal file
85
thirdparty/icu4c/common/bytestream.cpp
vendored
Normal file
@@ -0,0 +1,85 @@
|
||||
// © 2016 and later: Unicode, Inc. and others.
|
||||
// License & terms of use: http://www.unicode.org/copyright.html
|
||||
// Copyright (C) 2009-2011, International Business Machines
|
||||
// Corporation and others. All Rights Reserved.
|
||||
//
|
||||
// Copyright 2007 Google Inc. All Rights Reserved.
|
||||
// Author: sanjay@google.com (Sanjay Ghemawat)
|
||||
|
||||
#include "unicode/utypes.h"
|
||||
#include "unicode/bytestream.h"
|
||||
#include "cmemory.h"
|
||||
|
||||
U_NAMESPACE_BEGIN
|
||||
|
||||
ByteSink::~ByteSink() {}
|
||||
|
||||
char* ByteSink::GetAppendBuffer(int32_t min_capacity,
|
||||
int32_t /*desired_capacity_hint*/,
|
||||
char* scratch, int32_t scratch_capacity,
|
||||
int32_t* result_capacity) {
|
||||
if (min_capacity < 1 || scratch_capacity < min_capacity) {
|
||||
*result_capacity = 0;
|
||||
return nullptr;
|
||||
}
|
||||
*result_capacity = scratch_capacity;
|
||||
return scratch;
|
||||
}
|
||||
|
||||
void ByteSink::Flush() {}
|
||||
|
||||
CheckedArrayByteSink::CheckedArrayByteSink(char* outbuf, int32_t capacity)
|
||||
: outbuf_(outbuf), capacity_(capacity < 0 ? 0 : capacity),
|
||||
size_(0), appended_(0), overflowed_(false) {
|
||||
}
|
||||
|
||||
CheckedArrayByteSink::~CheckedArrayByteSink() {}
|
||||
|
||||
CheckedArrayByteSink& CheckedArrayByteSink::Reset() {
|
||||
size_ = appended_ = 0;
|
||||
overflowed_ = false;
|
||||
return *this;
|
||||
}
|
||||
|
||||
void CheckedArrayByteSink::Append(const char* bytes, int32_t n) {
|
||||
if (n <= 0) {
|
||||
return;
|
||||
}
|
||||
if (n > (INT32_MAX - appended_)) {
|
||||
// TODO: Report as integer overflow, not merely buffer overflow.
|
||||
appended_ = INT32_MAX;
|
||||
overflowed_ = true;
|
||||
return;
|
||||
}
|
||||
appended_ += n;
|
||||
int32_t available = capacity_ - size_;
|
||||
if (n > available) {
|
||||
n = available;
|
||||
overflowed_ = true;
|
||||
}
|
||||
if (n > 0 && bytes != (outbuf_ + size_)) {
|
||||
uprv_memcpy(outbuf_ + size_, bytes, n);
|
||||
}
|
||||
size_ += n;
|
||||
}
|
||||
|
||||
char* CheckedArrayByteSink::GetAppendBuffer(int32_t min_capacity,
|
||||
int32_t /*desired_capacity_hint*/,
|
||||
char* scratch,
|
||||
int32_t scratch_capacity,
|
||||
int32_t* result_capacity) {
|
||||
if (min_capacity < 1 || scratch_capacity < min_capacity) {
|
||||
*result_capacity = 0;
|
||||
return nullptr;
|
||||
}
|
||||
int32_t available = capacity_ - size_;
|
||||
if (available >= min_capacity) {
|
||||
*result_capacity = available;
|
||||
return outbuf_ + size_;
|
||||
} else {
|
||||
*result_capacity = scratch_capacity;
|
||||
return scratch;
|
||||
}
|
||||
}
|
||||
|
||||
U_NAMESPACE_END
|
Reference in New Issue
Block a user