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// $Id$ |
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/* |
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Copyright (C) 2007 Peter Johansson |
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Copyright (C) 2008 Jari Häkkinen, Peter Johansson |
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Copyright (C) 2010, 2011, 2012, 2014 Peter Johansson |
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This file is part of yat, http://dev.thep.lu.se/yat |
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yat is free software; you can redistribute it and/or modify it |
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under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or |
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(at your option) any later version. |
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yat is distributed in the hope that it will be useful, but |
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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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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <config.h> |
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#include "ColumnStream.h" |
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|
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#include <cassert> |
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#include <ostream> |
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|
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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ColumnStream::ColumnStream(std::ostream& os, size_t columns) |
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: activated_(0), margins_(columns), os_(os), width_(columns, 8) |
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{ |
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buffer_.reserve(columns); |
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while (buffer_.size()<columns) |
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buffer_.push_back(new std::stringstream); |
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} |
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|
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|
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ColumnStream::~ColumnStream(void) |
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{ |
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for (size_t i=0; i<buffer_.size(); ++i) |
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delete buffer_[i]; |
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} |
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|
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|
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size_t ColumnStream::columns(void) const |
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{ |
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return buffer_.size(); |
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} |
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|
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void ColumnStream::fill(size_t column, size_t count) |
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{ |
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if (count<width_[column]) |
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os_ << std::string(width_[column]-count, ' '); |
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} |
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|
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|
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void ColumnStream::flush(void) |
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{ |
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bool empty=false; |
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while(!empty) { |
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empty=true; |
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for (size_t i=0; i<columns(); ++i){ |
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if (writeline(i)) |
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empty=false; |
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} |
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os_ << '\n'; |
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} |
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for (size_t i=0; i<columns(); ++i) |
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buffer_[i]->clear(std::ios::goodbit); |
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} |
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|
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|
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size_t& ColumnStream::margin(size_t c) |
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{ |
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return margins_[c]; |
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} |
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|
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|
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void ColumnStream::next_column(void) |
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{ |
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++activated_; |
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if (activated_>=columns()) |
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flush(); |
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} |
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|
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void ColumnStream::print(std::stringstream& ss) |
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{ |
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assert(buffer_[activated_]); |
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assert(activated_<buffer_.size()); |
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char c; |
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ss.get(c); |
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while(ss.good()) { |
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if (c=='\t'){ |
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//*(buffer_[activated_]) << ' '; |
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next_column(); |
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} |
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else if (c=='\n'){ |
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//*(buffer_[activated_]) << ' '; |
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flush(); |
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activated_=0; |
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} |
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else |
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*(buffer_[activated_]) << c; |
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ss.get(c); |
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} |
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} |
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size_t& ColumnStream::width(size_t c) |
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{ |
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return width_[c]; |
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} |
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|
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|
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bool ColumnStream::writeline(size_t column) |
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{ |
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assert(column<columns()); |
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for (size_t i=0; i<margins_[column]; ++i) |
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os_ << ' '; |
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size_t count=0; |
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std::string word; |
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char c; |
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while (buffer_[column]->good()) { |
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buffer_[column]->get(c); |
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assert(c!='\t'); |
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assert(c!='\n'); |
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if (buffer_[column]->good()) |
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word += c; |
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if (c==' ' || !buffer_[column]->good()) { |
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if (count+word.size()<=width_[column]) { |
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os_ << word; |
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count += word.size(); |
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word = ""; |
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} |
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else { |
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if (!buffer_[column]->good()) |
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buffer_[column]->clear(std::ios::goodbit); |
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|
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// if line is empty and word is longer than column width, we |
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// have to split the word |
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if (!count) { |
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os_ << word.substr(0,width_[column]); |
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for (std::string::reverse_iterator i=word.rbegin(); |
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i!=word.rbegin()+(word.size()-width_[column]); ++i) |
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buffer_[column]->putback(*i); |
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} |
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else { |
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for (std::string::reverse_iterator i=word.rbegin(); |
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i!=word.rend(); ++i) |
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buffer_[column]->putback(*i); |
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fill(column, count); |
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} |
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return true; |
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} |
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} |
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} |
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fill(column, count); |
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return false; |
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} |
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|
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}}} // end of namespace utility, yat, and theplu |