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| -rw-r--r-- | src/help_text.hh | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/help_text.hh b/src/help_text.hh new file mode 100644 index 0000000..81dc8fb --- /dev/null +++ b/src/help_text.hh @@ -0,0 +1,225 @@ +/** + * Copyright (c) 2019, Timothy Stack + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of Timothy Stack nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LNAV_HELP_TEXT_HH +#define LNAV_HELP_TEXT_HH + +#include <map> +#include <string> +#include <vector> + +enum class help_context_t { + HC_NONE, + HC_PARAMETER, + HC_RESULT, + HC_COMMAND, + HC_SQL_COMMAND, + HC_SQL_KEYWORD, + HC_SQL_INFIX, + HC_SQL_FUNCTION, + HC_SQL_TABLE_VALUED_FUNCTION, +}; + +enum class help_function_type_t { + HFT_REGULAR, + HFT_AGGREGATE, +}; + +enum class help_nargs_t { + HN_REQUIRED, + HN_OPTIONAL, + HN_ZERO_OR_MORE, + HN_ONE_OR_MORE, +}; + +enum class help_parameter_format_t { + HPF_STRING, + HPF_REGEX, + HPF_INTEGER, + HPF_NUMBER, + HPF_DATETIME, + HPF_ENUM, +}; + +struct help_example { + const char* he_description{nullptr}; + const char* he_cmd{nullptr}; +}; + +struct help_text { + help_context_t ht_context{help_context_t::HC_NONE}; + const char* ht_name{nullptr}; + const char* ht_summary{nullptr}; + const char* ht_flag_name{nullptr}; + const char* ht_group_start{nullptr}; + const char* ht_group_end{nullptr}; + const char* ht_description{nullptr}; + std::vector<struct help_text> ht_parameters; + std::vector<struct help_text> ht_results; + std::vector<struct help_example> ht_example; + help_nargs_t ht_nargs{help_nargs_t::HN_REQUIRED}; + help_parameter_format_t ht_format{help_parameter_format_t::HPF_STRING}; + std::vector<const char*> ht_enum_values; + std::vector<const char*> ht_tags; + std::vector<const char*> ht_opposites; + help_function_type_t ht_function_type{help_function_type_t::HFT_REGULAR}; + void* ht_impl{nullptr}; + + help_text() = default; + + help_text(const char* name, const char* summary = nullptr) noexcept + : ht_name(name), ht_summary(summary) + { + if (name[0] == ':') { + this->ht_context = help_context_t::HC_COMMAND; + this->ht_name = &name[1]; + } + } + + help_text& command() noexcept + { + this->ht_context = help_context_t::HC_COMMAND; + return *this; + } + + help_text& sql_function() noexcept + { + this->ht_context = help_context_t::HC_SQL_FUNCTION; + return *this; + } + + help_text& sql_agg_function() noexcept + { + this->ht_context = help_context_t::HC_SQL_FUNCTION; + this->ht_function_type = help_function_type_t::HFT_AGGREGATE; + return *this; + } + + help_text& sql_table_valued_function() noexcept + { + this->ht_context = help_context_t::HC_SQL_TABLE_VALUED_FUNCTION; + return *this; + } + + help_text& sql_command() noexcept + { + this->ht_context = help_context_t::HC_SQL_COMMAND; + return *this; + } + + help_text& sql_keyword() noexcept + { + this->ht_context = help_context_t::HC_SQL_KEYWORD; + return *this; + } + + help_text& sql_infix() noexcept + { + this->ht_context = help_context_t::HC_SQL_INFIX; + return *this; + } + + help_text& with_summary(const char* summary) noexcept + { + this->ht_summary = summary; + return *this; + } + + help_text& with_flag_name(const char* flag) noexcept + { + this->ht_flag_name = flag; + return *this; + } + + help_text& with_grouping(const char* group_start, + const char* group_end) noexcept + { + this->ht_group_start = group_start; + this->ht_group_end = group_end; + return *this; + } + + help_text& with_parameters( + const std::initializer_list<help_text>& params) noexcept; + + help_text& with_parameter(const help_text& ht) noexcept; + + help_text& with_result(const help_text& ht) noexcept; + + help_text& with_examples( + const std::initializer_list<help_example>& examples) noexcept; + + help_text& with_example(const help_example& example) noexcept; + + help_text& optional() noexcept + { + this->ht_nargs = help_nargs_t::HN_OPTIONAL; + return *this; + } + + help_text& zero_or_more() noexcept + { + this->ht_nargs = help_nargs_t::HN_ZERO_OR_MORE; + return *this; + } + + help_text& one_or_more() noexcept + { + this->ht_nargs = help_nargs_t::HN_ONE_OR_MORE; + return *this; + } + + help_text& with_format(help_parameter_format_t format) noexcept + { + this->ht_format = format; + return *this; + } + + help_text& with_enum_values( + const std::initializer_list<const char*>& enum_values) noexcept; + + help_text& with_tags( + const std::initializer_list<const char*>& tags) noexcept; + + help_text& with_opposites( + const std::initializer_list<const char*>& opps) noexcept; + + template<typename F> + help_text& with_impl(F impl) + { + this->ht_impl = (void*) impl; + return *this; + } + + void index_tags(); + + static std::multimap<std::string, help_text*> TAGGED; +}; + +#endif |