Remove std::sstream from filamat (#1176)
This commit is contained in:
Ben Doherty
GitHub
240
libs/utils/src/ostream.cpp
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240
libs/utils/src/ostream.cpp
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <utils/ostream.h>
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#include <string>
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#include <utils/compiler.h>
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#include <iostream>
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#include <utils/trap.h>
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namespace utils {
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namespace io {
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ostream::~ostream() = default;
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ostream::Buffer::Buffer() noexcept {
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constexpr size_t initialSize = 1024;
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buffer = (char*) malloc(initialSize);
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assert(buffer);
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curr = buffer;
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capacity = initialSize;
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size = initialSize;
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}
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ostream::Buffer::~Buffer() noexcept {
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free(buffer);
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}
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UTILS_NOINLINE
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void ostream::Buffer::advance(ssize_t n) noexcept {
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if (n > 0) {
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size_t written = n < size ? size_t(n) : size;
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curr += written;
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size -= written;
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}
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}
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UTILS_NOINLINE
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void ostream::Buffer::resize(size_t newSize) noexcept {
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size_t offset = curr - buffer;
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buffer = (char*) realloc(buffer, newSize);
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assert(buffer);
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capacity = newSize;
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curr = buffer + offset;
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size = capacity - offset;
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}
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UTILS_NOINLINE
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void ostream::Buffer::reset() noexcept {
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curr = buffer;
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size = capacity;
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}
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const char* ostream::getFormat(ostream::type t) const noexcept {
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switch (t) {
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case type::SHORT: return mShowHex ? "0x%hx" : "%hd";
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case type::USHORT: return mShowHex ? "0x%hx" : "%hu";
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case type::CHAR: return mShowHex ? "0x%x" : "%c";
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case type::UCHAR: return mShowHex ? "0x%x" : "%c";
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case type::INT: return mShowHex ? "0x%x" : "%d";
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case type::UINT: return mShowHex ? "0x%x" : "%u";
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case type::LONG: return mShowHex ? "0x%lx" : "%ld";
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case type::ULONG: return mShowHex ? "0x%lx" : "%lu";
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case type::LONG_LONG: return mShowHex ? "0x%llx" : "%lld";
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case type::ULONG_LONG: return mShowHex ? "0x%llx" : "%llu";
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case type::DOUBLE: return "%f";
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case type::LONG_DOUBLE: return "%Lf";
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}
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}
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void ostream::growBufferIfNeeded(size_t s) noexcept {
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Buffer& buf = getBuffer();
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const size_t used = buf.curr - buf.buffer; // space currently used in buffer
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if (UTILS_UNLIKELY(buf.size < s)) {
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size_t newSize = buf.capacity * 2;
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while (UTILS_UNLIKELY((newSize - used) < s)) {
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newSize *= 2;
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}
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buf.resize(newSize);
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assert(buf.size >= s);
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}
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}
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ostream& ostream::operator<<(short value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::SHORT), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::SHORT), value));
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return *this;
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}
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ostream& ostream::operator<<(unsigned short value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::USHORT), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::USHORT), value));
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return *this;
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}
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ostream& ostream::operator<<(char value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::CHAR), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::CHAR), value));
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return *this;
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}
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ostream& ostream::operator<<(unsigned char value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::UCHAR), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::UCHAR), value));
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return *this;
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}
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ostream& ostream::operator<<(int value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::INT), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::INT), value));
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return *this;
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}
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ostream& ostream::operator<<(unsigned int value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::UINT), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::UINT), value));
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return *this;
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}
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ostream& ostream::operator<<(long value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::LONG), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::LONG), value));
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return *this;
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}
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ostream& ostream::operator<<(unsigned long value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::ULONG), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::ULONG), value));
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return *this;
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}
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ostream& ostream::operator<<(long long value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::LONG_LONG), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::LONG_LONG), value));
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return *this;
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}
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ostream& ostream::operator<<(unsigned long long value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::ULONG_LONG), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::ULONG_LONG), value));
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return *this;
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}
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ostream& ostream::operator<<(float value) noexcept {
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return operator<<((double)value);
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}
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ostream& ostream::operator<<(double value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::DOUBLE), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::DOUBLE), value));
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return *this;
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}
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ostream& ostream::operator<<(long double value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, getFormat(type::LONG_DOUBLE), value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, getFormat(type::LONG_DOUBLE), value));
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return *this;
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}
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ostream& ostream::operator<<(bool value) noexcept {
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return operator<<((int)value);
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}
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ostream& ostream::operator<<(const char* string) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, "%s", string);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, "%s", string));
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return *this;
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}
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ostream& ostream::operator<<(const unsigned char* string) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, "%s", string);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, "%s", string));
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return *this;
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}
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ostream& ostream::operator<<(const void* value) noexcept {
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Buffer& buf = getBuffer();
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size_t s = snprintf(nullptr, 0, "%p", value);
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growBufferIfNeeded(s + 1); // +1 to include the null-terminator
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buf.advance(snprintf(buf.curr, buf.size, "%p", value));
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return *this;
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}
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ostream& ostream::hex() noexcept {
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mShowHex = true;
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return *this;
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}
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ostream& ostream::dec() noexcept {
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mShowHex = false;
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return *this;
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}
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} // namespace io
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} // namespace utils
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