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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 17:44:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 17:44:55 +0000 |
commit | 5068d34c08f951a7ea6257d305a1627b09a95817 (patch) | |
tree | 08213e2be853396a3b07ce15dbe222644dcd9a89 /src/md4cpp.cc | |
parent | Initial commit. (diff) | |
download | lnav-5068d34c08f951a7ea6257d305a1627b09a95817.tar.xz lnav-5068d34c08f951a7ea6257d305a1627b09a95817.zip |
Adding upstream version 0.11.1.upstream/0.11.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/md4cpp.cc | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/src/md4cpp.cc b/src/md4cpp.cc new file mode 100644 index 0000000..5edd3d7 --- /dev/null +++ b/src/md4cpp.cc @@ -0,0 +1,303 @@ +/** + * Copyright (c) 2022, 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. + */ + +#include "md4cpp.hh" + +#include "base/is_utf8.hh" +#include "base/lnav_log.hh" +#include "emojis-json.h" +#include "xml-entities-json.h" +#include "yajlpp/yajlpp_def.hh" + +namespace md4cpp { + +static const typed_json_path_container<xml_entity> xml_entity_handlers = { + yajlpp::property_handler("characters").for_field(&xml_entity::xe_chars), +}; + +static const typed_json_path_container<xml_entity_map> xml_entity_map_handlers + = { + yajlpp::pattern_property_handler("(?<var_name>\\&\\w+;?)") + .with_synopsis("<name>") + .with_path_provider<xml_entity_map>( + [](struct xml_entity_map* xem, + std::vector<std::string>& paths_out) { + for (const auto& iter : xem->xem_entities) { + paths_out.emplace_back(iter.first); + } + }) + .with_obj_provider<xml_entity, xml_entity_map>( + [](const yajlpp_provider_context& ypc, xml_entity_map* xem) { + auto entity_name = ypc.get_substr(0); + return &xem->xem_entities[entity_name]; + }) + .with_children(xml_entity_handlers), +}; + +static const typed_json_path_container<emoji> emoji_handlers = { + yajlpp::property_handler("emoji").for_field(&emoji::e_value), + yajlpp::property_handler("shortname").for_field(&emoji::e_shortname), +}; + +static const typed_json_path_container<emoji_map> emoji_map_handlers = { + yajlpp::property_handler("emojis#") + .for_field(&emoji_map::em_emojis) + .with_children(emoji_handlers), +}; + +static xml_entity_map +load_xml_entity_map() +{ + static const intern_string_t name + = intern_string::lookup(xml_entities_json.get_name()); + auto parse_res + = xml_entity_map_handlers.parser_for(name).with_ignore_unused(true).of( + xml_entities_json.to_string_fragment()); + + assert(parse_res.isOk()); + + return parse_res.unwrap(); +} + +const xml_entity_map& +get_xml_entity_map() +{ + static const auto retval = load_xml_entity_map(); + + return retval; +} + +static emoji_map +load_emoji_map() +{ + static const intern_string_t name + = intern_string::lookup(emojis_json.get_name()); + auto parse_res + = emoji_map_handlers.parser_for(name).with_ignore_unused(true).of( + emojis_json.to_string_fragment()); + + assert(parse_res.isOk()); + + auto retval = parse_res.unwrap(); + for (auto& em : retval.em_emojis) { + retval.em_shortname2emoji.emplace(em.e_shortname, em); + } + + return retval; +} + +const emoji_map& +get_emoji_map() +{ + static const auto retval = load_emoji_map(); + + return retval; +} + +struct parse_userdata { + event_handler& pu_handler; + std::string pu_error_msg; +}; + +static event_handler::block +build_block(MD_BLOCKTYPE type, void* detail) +{ + switch (type) { + case MD_BLOCK_DOC: + return event_handler::block_doc{}; + case MD_BLOCK_QUOTE: + return event_handler::block_quote{}; + case MD_BLOCK_UL: + return static_cast<MD_BLOCK_UL_DETAIL*>(detail); + case MD_BLOCK_OL: + return static_cast<MD_BLOCK_OL_DETAIL*>(detail); + case MD_BLOCK_LI: + return static_cast<MD_BLOCK_LI_DETAIL*>(detail); + case MD_BLOCK_HR: + return event_handler::block_hr{}; + case MD_BLOCK_H: + return static_cast<MD_BLOCK_H_DETAIL*>(detail); + case MD_BLOCK_CODE: + return static_cast<MD_BLOCK_CODE_DETAIL*>(detail); + case MD_BLOCK_HTML: + return event_handler::block_html{}; + case MD_BLOCK_P: + return event_handler::block_p{}; + case MD_BLOCK_TABLE: + return static_cast<MD_BLOCK_TABLE_DETAIL*>(detail); + case MD_BLOCK_THEAD: + return event_handler::block_thead{}; + case MD_BLOCK_TBODY: + return event_handler::block_tbody{}; + case MD_BLOCK_TR: + return event_handler::block_tr{}; + case MD_BLOCK_TH: + return event_handler::block_th{}; + case MD_BLOCK_TD: + return static_cast<MD_BLOCK_TD_DETAIL*>(detail); + } + + return {}; +} + +static event_handler::span +build_span(MD_SPANTYPE type, void* detail) +{ + switch (type) { + case MD_SPAN_EM: + return event_handler::span_em{}; + case MD_SPAN_STRONG: + return event_handler::span_strong{}; + case MD_SPAN_A: + return static_cast<MD_SPAN_A_DETAIL*>(detail); + case MD_SPAN_IMG: + return static_cast<MD_SPAN_IMG_DETAIL*>(detail); + case MD_SPAN_CODE: + return event_handler::span_code{}; + case MD_SPAN_DEL: + return event_handler::span_del{}; + case MD_SPAN_U: + return event_handler::span_u{}; + default: + break; + } + + return {}; +} + +static int +md4cpp_enter_block(MD_BLOCKTYPE type, void* detail, void* userdata) +{ + auto* pu = static_cast<parse_userdata*>(userdata); + + auto enter_res = pu->pu_handler.enter_block(build_block(type, detail)); + if (enter_res.isErr()) { + pu->pu_error_msg = enter_res.unwrapErr(); + return 1; + } + + return 0; +} + +static int +md4cpp_leave_block(MD_BLOCKTYPE type, void* detail, void* userdata) +{ + auto* pu = static_cast<parse_userdata*>(userdata); + + auto leave_res = pu->pu_handler.leave_block(build_block(type, detail)); + if (leave_res.isErr()) { + pu->pu_error_msg = leave_res.unwrapErr(); + return 1; + } + + return 0; +} + +static int +md4cpp_enter_span(MD_SPANTYPE type, void* detail, void* userdata) +{ + auto* pu = static_cast<parse_userdata*>(userdata); + + auto enter_res = pu->pu_handler.enter_span(build_span(type, detail)); + if (enter_res.isErr()) { + pu->pu_error_msg = enter_res.unwrapErr(); + return 1; + } + + return 0; +} + +static int +md4cpp_leave_span(MD_SPANTYPE type, void* detail, void* userdata) +{ + auto* pu = static_cast<parse_userdata*>(userdata); + + auto leave_res = pu->pu_handler.leave_span(build_span(type, detail)); + if (leave_res.isErr()) { + pu->pu_error_msg = leave_res.unwrapErr(); + return 1; + } + + return 0; +} + +static int +md4cpp_text(MD_TEXTTYPE type, const MD_CHAR* text, MD_SIZE size, void* userdata) +{ + auto* pu = static_cast<parse_userdata*>(userdata); + auto text_res = pu->pu_handler.text(type, string_fragment(text, 0, size)); + if (text_res.isErr()) { + pu->pu_error_msg = text_res.unwrapErr(); + return 1; + } + + return 0; +} + +namespace details { +Result<void, std::string> +parse(const string_fragment& sf, event_handler& eh) +{ + const char* utf8_errmsg = nullptr; + int utf8_faulty_bytes = 0; + + auto scan_res = is_utf8((unsigned char*) sf.data(), + sf.length(), + &utf8_errmsg, + &utf8_faulty_bytes); + if (utf8_errmsg != nullptr) { + return Err( + fmt::format(FMT_STRING("file has invalid UTF-8 at offset {}: {}"), + scan_res.usr_end, + utf8_errmsg)); + } + + MD_PARSER parser = {0}; + auto pu = parse_userdata{eh}; + + parser.abi_version = 0; + parser.flags = (MD_DIALECT_GITHUB | MD_FLAG_UNDERLINE) + & ~(MD_FLAG_PERMISSIVEAUTOLINKS); + parser.enter_block = md4cpp_enter_block; + parser.leave_block = md4cpp_leave_block; + parser.enter_span = md4cpp_enter_span; + parser.leave_span = md4cpp_leave_span; + parser.text = md4cpp_text; + + auto rc = md_parse(sf.data(), sf.length(), &parser, &pu); + + if (rc == 0) { + return Ok(); + } + + return Err(pu.pu_error_msg); +} +} // namespace details + +} // namespace md4cpp |