diff options
Diffstat (limited to 'src/line_accumulator.cc')
-rw-r--r-- | src/line_accumulator.cc | 65 |
1 files changed, 65 insertions, 0 deletions
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(); +} |