From ce9d2ca31e07679292f0a0378792050756d6ab26 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Tue, 29 Mar 2016 20:47:27 +0200
Subject: Move `LineAccumulator` into separate compilation unit

---
 src/line_accumulator.cc | 65 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/line_accumulator.cc

(limited to 'src/line_accumulator.cc')

diff --git a/src/line_accumulator.cc b/src/line_accumulator.cc
new file mode 100644
index 0000000..cf25c0c
--- /dev/null
+++ b/src/line_accumulator.cc
@@ -0,0 +1,65 @@
+#include "line_accumulator.h"
+
+#include <iostream>
+
+LineAccumulator::LineAccumulator(const std::size_t max_length):
+	max_length_{max_length},
+	random_{},
+	length_{0},
+	tokens_{},
+	spaces_{} { }
+
+LineAccumulator::~LineAccumulator() {
+	this->discharge(false);
+}
+
+void LineAccumulator::operator()(const std::string& word) {
+	if ( ( this->length_ + word.length() + 1 ) > this->max_length_ ) {
+		this->pop_trailing_token();
+		this->discharge(true);
+	}
+
+	this->add_token(word);
+	this->add_space();
+}
+
+void LineAccumulator::add_token(const std::string& token) {
+	this->length_ += token.length();
+	this->tokens_.emplace_back(token);
+}
+
+void LineAccumulator::add_space() {
+	this->add_token(" ");
+	this->spaces_.emplace_back(this->tokens_.size() - 1);
+}
+
+void LineAccumulator::increase_space_at(const std::size_t index) {
+	this->tokens_.at(this->spaces_[index]).append(" ");
+	++this->length_;
+}
+
+void LineAccumulator::pop_trailing_token() {
+	this->length_ -= this->tokens_.back().length();
+	this->tokens_.pop_back();
+	this->spaces_.pop_back();
+}
+
+void LineAccumulator::discharge(const bool full) {
+	if ( full ) {
+		auto range = this->random_.makeRange(0, this->spaces_.size()-1);
+
+		while ( this->length_ < this->max_length_ ) {
+			this->increase_space_at(range.get());
+		}
+	}
+
+	for ( const auto& token : this->tokens_ ) {
+		std::cout << token;
+	}
+
+	std::cout << '\n';
+
+	this->length_ = 0;
+	this->tokens_.clear();
+	this->spaces_.clear();
+}
-- 
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