first commit
This commit is contained in:
Jérôme Delacotte
465
libraries/ArduinoSTL/src/istream_helpers
Normal file
465
libraries/ArduinoSTL/src/istream_helpers
Normal file
@@ -0,0 +1,465 @@
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/* Copyright (C) 2004 Garrett A. Kajmowicz
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This file is part of the uClibc++ Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "ios"
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#include "cctype"
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#include "string"
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#ifndef __STD_HEADER_ISTREAM_HELPERS
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#define __STD_HEADER_ISTREAM_HELPERS 1
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#pragma GCC visibility push(default)
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namespace std{
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/* We are making the following template class for serveral reasons. Firstly,
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* we want to keep the main istream code neat and tidy. Secondly, we want it
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* to be easy to do partial specialization of the istream code so that it can
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* be expanded and put into the library. This will allow us to make application
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* code smaller at the expense of increased library size. This is a fair
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* trade-off when there are multiple applications being compiled. Also, this
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* feature will be used optionally via configuration options. It will also
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* allow us to keep the code bases in sync, dramatically simplifying the
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* maintenance required. We specialized for char because wchar and others
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* require different scanf functions
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*/
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template <class C, class traits> _UCXXEXPORT
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basic_string<C, traits> _readToken(basic_istream<C, traits>& stream)
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{
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basic_string<C, traits> temp;
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typename traits::int_type c;
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while(true){
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c = stream.rdbuf()->sgetc();
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if(c != traits::eof() && isspace(c) == false){
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stream.rdbuf()->sbumpc();
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temp.append(1, traits::to_char_type(c));
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}else{
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break;
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}
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}
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if (temp.size() == 0)
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stream.setstate(ios_base::eofbit|ios_base::failbit);
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return temp;
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}
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template <class C, class traits> _UCXXEXPORT
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basic_string<C, traits> _readTokenDecimal(basic_istream<C, traits>& stream)
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{
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basic_string<C, traits> temp;
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typename traits::int_type c;
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while(true){
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c = stream.rdbuf()->sgetc();
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if(c != traits::eof() && isspace(c) == false && (
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isdigit(c) ||
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c == '.' ||
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c == ',' ||
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((c == '-' || c == '+') && temp.size() == 0) )
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){
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stream.rdbuf()->sbumpc();
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temp.append(1, traits::to_char_type(c));
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}else{
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break;
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}
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}
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if (temp.size() == 0)
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stream.setstate(ios_base::eofbit|ios_base::failbit);
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return temp;
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}
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#ifdef __UCLIBCXX_EXPAND_ISTREAM_CHAR__
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template <> _UCXXEXPORT string _readToken<char, char_traits<char> >(istream & stream);
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#endif
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template <class traits, class charT, class dataType> class _UCXXEXPORT __istream_readin{
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public:
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static void readin(basic_istream<charT,traits>& stream, dataType & var);
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, bool>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, bool & var)
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{
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/* 22.4.2.1.2.4 */
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basic_string<char, traits > temp;
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temp = _readToken( stream);
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if (stream.flags() & ios_base::boolalpha) {
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if (temp == "true") // truename()
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var = true;
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else {
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var = false;
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if (temp != "false") // falsename()
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stream.setstate(ios_base::failbit);
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}
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} else {
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long int i = 0;
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int ret;
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if (stream.flags() & ios_base::dec) {
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ret = sscanf(temp.c_str(), "%ld", &i );
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} else {
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if (stream.flags() & ios_base::oct) {
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ret = sscanf(temp.c_str(), "%lo", (unsigned long int *)(&i));
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} else if (stream.flags() & ios_base::hex) {
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if (stream.flags() & ios_base::uppercase) {
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ret = sscanf(temp.c_str(), "%lX", (unsigned long int *)(&i));
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} else {
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ret = sscanf(temp.c_str(), "%lx", (unsigned long int *)(&i));
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}
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} else {
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ret = sscanf(temp.c_str(), "%li", &i);
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}
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}
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if (ret != 1 || i >> 1)
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stream.setstate(ios_base::failbit);
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var = ret == 1 && bool(i);
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, short>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, short & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%hd", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%ho", (unsigned short int *)(&var) );
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}else if(stream.flags() & ios_base::hex){
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%hX", (unsigned short int *)(&var) );
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}else{
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sscanf(temp.c_str(), "%hx", (unsigned short int *)(&var) );
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}
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}else{
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sscanf(temp.c_str(), "%hi", &var);
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}
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, unsigned short>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, unsigned short & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%hu", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%ho", &var);
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}else if(stream.flags() & ios_base::hex){
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%hX", &var );
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}else{
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sscanf(temp.c_str(), "%hx", &var);
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}
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}else{
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sscanf(temp.c_str(), "%hi", (signed short int*)(&var) );
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}
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, int>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, int & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%d", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%o", (unsigned int *)(&var) );
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}else if(stream.flags() & ios_base::hex){
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%X", (unsigned int *)(&var) );
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}else{
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sscanf(temp.c_str(), "%x", (unsigned int *)(&var) );
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}
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}else{
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sscanf(temp.c_str(), "%i", &var);
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}
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, unsigned int>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, unsigned int & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%u", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%o", (unsigned int *)(&var) );
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}else if(stream.flags() & ios_base::hex){
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%X", (unsigned int *)(&var) );
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}else{
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sscanf(temp.c_str(), "%x", (unsigned int *)(&var) );
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}
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}else{
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sscanf(temp.c_str(), "%i", (int *)(&var) );
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}
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, long int>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, long int & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%ld", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%lo", (unsigned long int *)(&var) );
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}else if(stream.flags() & ios_base::hex){
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%lX", (unsigned long int *)(&var) );
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}else{
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sscanf(temp.c_str(), "%lx", (unsigned long int *)(&var) );
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}
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}else{
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sscanf(temp.c_str(), "%li", (long int *)(&var) );
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}
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}
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}
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};
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, unsigned long int>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, unsigned long int & var)
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{
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basic_string<char, traits > temp;
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%lu", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
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sscanf(temp.c_str(), "%lo", &var );
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}else if(stream.flags() & ios_base::hex){
|
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if(stream.flags() & ios_base::uppercase){
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sscanf(temp.c_str(), "%lX", &var );
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}else{
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sscanf(temp.c_str(), "%lx", &var);
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}
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}else{
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sscanf(temp.c_str(), "%li", (long int *)(&var) );
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}
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}
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}
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};
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#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, long long>{
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public:
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inline static void readin(basic_istream<char, traits >& stream, long long & var)
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{
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basic_string<char, traits > temp;
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|
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if(stream.flags() & ios_base::dec){
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temp = _readTokenDecimal( stream);
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sscanf(temp.c_str(), "%lld", &var );
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}else{
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temp = _readToken( stream);
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if( stream.flags() & ios_base::oct){
|
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sscanf(temp.c_str(), "%llo", (unsigned long long *)&var );
|
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}else if(stream.flags() & ios_base::hex){
|
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if(stream.flags() & ios_base::uppercase){
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scanf(temp.c_str(), "%llX", (unsigned long long *)&var );
|
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}else{
|
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sscanf(temp.c_str(), "%llx", (unsigned long long *)&var);
|
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}
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}else{
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sscanf(temp.c_str(), "%lli", (&var) );
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
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|
||||
|
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template <class traits> class _UCXXEXPORT __istream_readin<traits, char, unsigned long long>{
|
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public:
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inline static void readin(basic_istream<char, traits >& stream, unsigned long long & var)
|
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{
|
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basic_string<char, traits > temp;
|
||||
|
||||
if(stream.flags() & ios_base::dec){
|
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temp = _readTokenDecimal( stream);
|
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sscanf(temp.c_str(), "%llu", &var );
|
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}else{
|
||||
temp = _readToken( stream);
|
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if( stream.flags() & ios_base::oct){
|
||||
sscanf(temp.c_str(), "%llo", &var );
|
||||
}else if(stream.flags() & ios_base::hex){
|
||||
if(stream.flags() & ios_base::uppercase){
|
||||
scanf(temp.c_str(), "%llX", &var );
|
||||
}else{
|
||||
sscanf(temp.c_str(), "%llx", &var);
|
||||
}
|
||||
}else{
|
||||
sscanf(temp.c_str(), "%lli", (long long *)(&var) );
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef __UCLIBCXX_HAS_FLOATS__
|
||||
|
||||
// NB: The Arduino AVR compiler contains an implementation of printf() and scanf()
|
||||
// that lacks support for floating point numbers. Also, the AVR C library doesn't
|
||||
// support the double datatype. In AVR it's the same as float.
|
||||
|
||||
|
||||
template <class traits> class _UCXXEXPORT __istream_readin<traits, char, float>{
|
||||
public:
|
||||
inline static void readin(basic_istream<char, traits >& stream, float & var)
|
||||
{
|
||||
basic_string<char, traits > temp;
|
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temp = _readTokenDecimal(stream);
|
||||
bool isneg=false;
|
||||
if (temp[0] == '-') {
|
||||
isneg=true;
|
||||
temp.erase(0,1);
|
||||
}else if (temp[0] == '+') {
|
||||
isneg=false;
|
||||
temp.erase(0,1);
|
||||
}
|
||||
unsigned int dec = temp.find('.', 0);
|
||||
if (dec == string::npos) {
|
||||
var = atol(temp.c_str());
|
||||
}else{
|
||||
var = atol(temp.substr(0,dec).c_str());
|
||||
var += ((double) atoi(temp.substr(dec+1).c_str())) / pow(10.0,temp.size()-dec-1);
|
||||
}
|
||||
if (isneg)
|
||||
var = -var;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
template <class traits> class _UCXXEXPORT __istream_readin<traits, char, double>{
|
||||
public:
|
||||
inline static void readin(basic_istream<char, traits >& stream, double & var)
|
||||
{
|
||||
basic_string<char, traits > temp;
|
||||
temp = _readTokenDecimal(stream);
|
||||
bool isneg=false;
|
||||
if (temp[0] == '-') {
|
||||
isneg=true;
|
||||
temp.erase(0,1);
|
||||
}else if (temp[0] == '+') {
|
||||
isneg=false;
|
||||
temp.erase(0,1);
|
||||
}
|
||||
unsigned int dec = temp.find('.', 0);
|
||||
if (dec == string::npos) {
|
||||
var = atol(temp.c_str());
|
||||
}else{
|
||||
var = atol(temp.substr(0,dec).c_str());
|
||||
var += ((double) atoi(temp.substr(dec+1).c_str())) / pow(10.0,temp.size()-dec-1);
|
||||
}
|
||||
if (isneg)
|
||||
var = -var;
|
||||
}
|
||||
};
|
||||
|
||||
template <class traits> class _UCXXEXPORT __istream_readin<traits, char, long double>{
|
||||
public:
|
||||
inline static void readin(basic_istream<char, traits >& stream, long double & var)
|
||||
{
|
||||
basic_string<char, traits > temp;
|
||||
temp = _readTokenDecimal( stream);
|
||||
sscanf(temp.c_str(), "%Lg", &var);
|
||||
}
|
||||
};
|
||||
|
||||
#endif // ifdef __UCLIBCXX_HAS_FLOATS__
|
||||
|
||||
template <class traits> class _UCXXEXPORT __istream_readin<traits, char, void*>{
|
||||
public:
|
||||
inline static void readin(basic_istream<char, traits >& stream, void* & var)
|
||||
{
|
||||
basic_string<char, traits > temp;
|
||||
temp = _readToken( stream);
|
||||
sscanf(temp.c_str(), "%p", &var);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
template<class charT, class traits> void __skipws(basic_istream<charT,traits>& is){
|
||||
const typename basic_istream<charT,traits>::int_type eof = traits::eof();
|
||||
typename basic_istream<charT,traits>::int_type c;
|
||||
//While the next character normally read doesn't equal eof
|
||||
//and that character is a space, advance to the next read position
|
||||
//Thus itterating through all whitespace until we get to the meaty stuff
|
||||
while (
|
||||
!traits::eq_int_type((c = is.rdbuf()->sgetc()), eof)
|
||||
&& isspace(c)
|
||||
) {
|
||||
is.rdbuf()->sbumpc();
|
||||
}
|
||||
if(traits::eq_int_type(c, eof)){
|
||||
is.setstate(ios_base::eofbit);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#pragma GCC visibility pop
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user