1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "tools/rbd/OptionPrinter.h"
5 #include "tools/rbd/IndentStream.h"
9 namespace po = boost::program_options;
11 const std::string OptionPrinter::POSITIONAL_ARGUMENTS("Positional arguments");
12 const std::string OptionPrinter::OPTIONAL_ARGUMENTS("Optional arguments");
14 const size_t OptionPrinter::MAX_DESCRIPTION_OFFSET;
16 OptionPrinter::OptionPrinter(const OptionsDescription &positional,
17 const OptionsDescription &optional)
18 : m_positional(positional), m_optional(optional) {
21 void OptionPrinter::print_short(std::ostream &os, size_t initial_offset) {
22 size_t name_width = std::min(initial_offset, MAX_DESCRIPTION_OFFSET) + 1;
24 IndentStream indent_stream(name_width, initial_offset, LINE_WIDTH, os);
25 indent_stream.set_delimiter("[");
26 for (size_t i = 0; i < m_optional.options().size(); ++i) {
27 bool required = m_optional.options()[i]->semantic()->is_required();
31 indent_stream << "--" << m_optional.options()[i]->long_name();
32 if (m_optional.options()[i]->semantic()->max_tokens() != 0) {
33 indent_stream << " <" << m_optional.options()[i]->long_name() << ">";
40 indent_stream << std::endl;
42 if (m_positional.options().size() > 0) {
43 indent_stream.set_delimiter(" ");
44 for (size_t i = 0; i < m_positional.options().size(); ++i) {
45 indent_stream << "<" << m_positional.options()[i]->long_name() << "> ";
46 if (m_positional.options()[i]->semantic()->max_tokens() > 1) {
47 indent_stream << "[<" << m_positional.options()[i]->long_name()
52 indent_stream << std::endl;
56 void OptionPrinter::print_detailed(std::ostream &os) {
57 std::string indent_prefix(2, ' ');
58 size_t name_width = compute_name_width(indent_prefix.size());
60 if (m_positional.options().size() > 0) {
61 std::cout << POSITIONAL_ARGUMENTS << std::endl;
62 for (size_t i = 0; i < m_positional.options().size(); ++i) {
64 ss << indent_prefix << "<" << m_positional.options()[i]->long_name()
67 std::cout << ss.str();
68 IndentStream indent_stream(name_width, ss.str().size(), LINE_WIDTH, os);
69 indent_stream << m_positional.options()[i]->description() << std::endl;
71 std::cout << std::endl;
74 if (m_optional.options().size() > 0) {
75 std::cout << OPTIONAL_ARGUMENTS << std::endl;
76 for (size_t i = 0; i < m_optional.options().size(); ++i) {
79 << m_optional.options()[i]->format_name() << " "
80 << m_optional.options()[i]->format_parameter();
82 std::cout << ss.str();
83 IndentStream indent_stream(name_width, ss.str().size(), LINE_WIDTH, os);
84 indent_stream << m_optional.options()[i]->description() << std::endl;
86 std::cout << std::endl;
90 size_t OptionPrinter::compute_name_width(size_t indent) {
91 size_t width = MIN_NAME_WIDTH;
92 std::vector<OptionsDescription> descs = {m_positional, m_optional};
93 for (size_t desc_idx = 0; desc_idx < descs.size(); ++desc_idx) {
94 const OptionsDescription &desc = descs[desc_idx];
95 for (size_t opt_idx = 0; opt_idx < desc.options().size(); ++opt_idx) {
96 size_t name_width = desc.options()[opt_idx]->format_name().size() +
97 desc.options()[opt_idx]->format_parameter().size()
99 width = std::max(width, name_width);
103 width = std::min(width, MAX_DESCRIPTION_OFFSET) + 1;