summaryrefslogtreecommitdiffstats
path: root/src/lnav_util.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/lnav_util.cc334
1 files changed, 334 insertions, 0 deletions
diff --git a/src/lnav_util.cc b/src/lnav_util.cc
new file mode 100644
index 0000000..e5540d9
--- /dev/null
+++ b/src/lnav_util.cc
@@ -0,0 +1,334 @@
+/**
+ * Copyright (c) 2013, 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.
+ *
+ * @file lnav_util.cc
+ *
+ * Dumping ground for useful functions with no other home.
+ */
+
+#include "lnav_util.hh"
+
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "base/ansi_scrubber.hh"
+#include "base/itertools.hh"
+#include "base/result.h"
+#include "bookmarks.hh"
+#include "config.h"
+#include "fmt/format.h"
+#include "log_format_fwd.hh"
+#include "view_curses.hh"
+#include "yajlpp/yajlpp.hh"
+#include "yajlpp/yajlpp_def.hh"
+
+bool
+change_to_parent_dir()
+{
+ bool retval = false;
+ char cwd[3] = "";
+
+ if (getcwd(cwd, sizeof(cwd)) == nullptr) {
+ /* perror("getcwd"); */
+ }
+ if (strcmp(cwd, "/") != 0) {
+ if (chdir("..") == -1) {
+ perror("chdir('..')");
+ } else {
+ retval = true;
+ }
+ }
+
+ return retval;
+}
+
+bool
+is_dev_null(const struct stat& st)
+{
+ struct stat null_stat;
+
+ stat("/dev/null", &null_stat);
+
+ return st.st_dev == null_stat.st_dev && st.st_ino == null_stat.st_ino;
+}
+
+bool
+is_dev_null(int fd)
+{
+ struct stat fd_stat;
+
+ fstat(fd, &fd_stat);
+ return is_dev_null(fd_stat);
+}
+
+void
+write_line_to(FILE* outfile, const attr_line_t& al)
+{
+ const auto& al_attrs = al.get_attrs();
+ auto lr = find_string_attr_range(al_attrs, &SA_ORIGINAL_LINE);
+
+ if (!lr.is_valid() || lr.lr_start > 1) {
+ // If the line is prefixed with some extra information, include that
+ // in the output. For example, the log file name or time offset.
+ lnav::console::println(outfile, al);
+ } else {
+ lnav::console::println(outfile, al.subline(lr.lr_start, lr.length()));
+ }
+}
+
+namespace lnav {
+
+std::string
+to_json(const std::string& str)
+{
+ yajlpp_gen gen;
+
+ yajl_gen_config(gen, yajl_gen_beautify, false);
+ yajl_gen_string(gen, str);
+
+ return gen.to_string_fragment().to_string();
+}
+
+static void
+to_json(yajlpp_gen& gen, const attr_line_t& al)
+{
+ {
+ yajlpp_map root_map(gen);
+
+ root_map.gen("str");
+ root_map.gen(al.get_string());
+
+ root_map.gen("attrs");
+ {
+ yajlpp_array attr_array(gen);
+
+ for (const auto& sa : al.get_attrs()) {
+ yajlpp_map elem_map(gen);
+
+ elem_map.gen("start");
+ elem_map.gen(sa.sa_range.lr_start);
+ elem_map.gen("end");
+ elem_map.gen(sa.sa_range.lr_end);
+ elem_map.gen("type");
+ elem_map.gen(sa.sa_type->sat_name);
+ elem_map.gen("value");
+ sa.sa_value.match(
+ [&](int64_t i) { elem_map.gen(i); },
+ [&](role_t r) {
+ elem_map.gen(lnav::enums::to_underlying(r));
+ },
+ [&](const intern_string_t& str) { elem_map.gen(str); },
+ [&](const std::string& str) { elem_map.gen(str); },
+ [&](const text_attrs& ta) { elem_map.gen(ta.ta_attrs); },
+ [&](const std::shared_ptr<logfile>& lf) {
+ elem_map.gen("");
+ },
+ [&](const bookmark_metadata* bm) { elem_map.gen(""); },
+ [&](const timespec& ts) { elem_map.gen(""); },
+ [&](const string_fragment& sf) { elem_map.gen(sf); });
+ }
+ }
+ }
+}
+
+std::string
+to_json(const attr_line_t& al)
+{
+ yajlpp_gen gen;
+
+ yajl_gen_config(gen, yajl_gen_beautify, false);
+ to_json(gen, al);
+
+ return gen.to_string_fragment().to_string();
+}
+
+std::string
+to_json(const lnav::console::user_message& um)
+{
+ yajlpp_gen gen;
+
+ yajl_gen_config(gen, yajl_gen_beautify, false);
+
+ {
+ yajlpp_map root_map(gen);
+
+ root_map.gen("level");
+ switch (um.um_level) {
+ case console::user_message::level::raw:
+ root_map.gen("raw");
+ break;
+ case console::user_message::level::ok:
+ root_map.gen("ok");
+ break;
+ case console::user_message::level::info:
+ root_map.gen("info");
+ break;
+ case console::user_message::level::warning:
+ root_map.gen("warning");
+ break;
+ case console::user_message::level::error:
+ root_map.gen("error");
+ break;
+ }
+
+ root_map.gen("message");
+ to_json(gen, um.um_message);
+ root_map.gen("reason");
+ to_json(gen, um.um_reason);
+ root_map.gen("snippets");
+ {
+ yajlpp_array snippet_array(gen);
+
+ for (const auto& snip : um.um_snippets) {
+ yajlpp_map snip_map(gen);
+
+ snip_map.gen("source");
+ snip_map.gen(snip.s_location.sl_source);
+ snip_map.gen("line");
+ snip_map.gen(snip.s_location.sl_line_number);
+ snip_map.gen("content");
+ to_json(gen, snip.s_content);
+ }
+ }
+ root_map.gen("help");
+ to_json(gen, um.um_help);
+ }
+
+ return gen.to_string_fragment().to_string();
+}
+
+static int
+read_string_attr_type(yajlpp_parse_context* ypc,
+ const unsigned char* str,
+ size_t len)
+{
+ auto* sa = (string_attr*) ypc->ypc_obj_stack.top();
+ auto type = std::string((const char*) str, len);
+
+ if (type == "role") {
+ sa->sa_type = &VC_ROLE;
+ } else if (type == "preformatted") {
+ sa->sa_type = &SA_PREFORMATTED;
+ } else if (type == "style") {
+ sa->sa_type = &VC_STYLE;
+ } else {
+ log_error("unhandled string_attr type: %s", type.c_str());
+ ensure(false);
+ }
+ return 1;
+}
+
+static int
+read_string_attr_int_value(yajlpp_parse_context* ypc, long long in)
+{
+ auto* sa = (string_attr*) ypc->ypc_obj_stack.top();
+
+ if (sa->sa_type == &VC_ROLE) {
+ sa->sa_value = static_cast<role_t>(in);
+ } else if (sa->sa_type == &VC_STYLE) {
+ sa->sa_value = text_attrs{
+ static_cast<int32_t>(in),
+ };
+ }
+ return 1;
+}
+
+static const struct json_path_container string_attr_handlers = {
+ yajlpp::property_handler("start").for_field(&string_attr::sa_range,
+ &line_range::lr_start),
+ yajlpp::property_handler("end").for_field(&string_attr::sa_range,
+ &line_range::lr_end),
+ yajlpp::property_handler("type").add_cb(read_string_attr_type),
+ yajlpp::property_handler("value").add_cb(read_string_attr_int_value),
+};
+
+static const typed_json_path_container<attr_line_t> attr_line_handlers = {
+ yajlpp::property_handler("str").for_field(&attr_line_t::al_string),
+ yajlpp::property_handler("attrs#")
+ .for_field(&attr_line_t::al_attrs)
+ .with_children(string_attr_handlers),
+};
+
+template<>
+Result<attr_line_t, std::vector<console::user_message>>
+from_json(const std::string& json)
+{
+ static const auto STRING_SRC = intern_string::lookup("string");
+
+ return attr_line_handlers.parser_for(STRING_SRC).of(json);
+}
+
+static const json_path_container snippet_handlers = {
+ yajlpp::property_handler("source").for_field(&console::snippet::s_location,
+ &source_location::sl_source),
+ yajlpp::property_handler("line").for_field(
+ &console::snippet::s_location, &source_location::sl_line_number),
+ yajlpp::property_handler("content")
+ .for_child(&console::snippet::s_content)
+ .with_children(attr_line_handlers),
+};
+
+static const json_path_handler_base::enum_value_t LEVEL_ENUM[] = {
+ {"raw", lnav::console::user_message::level::raw},
+ {"ok", lnav::console::user_message::level::ok},
+ {"info", lnav::console::user_message::level::info},
+ {"warning", lnav::console::user_message::level::warning},
+ {"error", lnav::console::user_message::level::error},
+
+ json_path_handler_base::ENUM_TERMINATOR,
+};
+
+static const typed_json_path_container<console::user_message>
+ user_message_handlers = {
+ yajlpp::property_handler("level")
+ .with_enum_values(LEVEL_ENUM)
+ .for_field(&console::user_message::um_level),
+ yajlpp::property_handler("message")
+ .for_child(&console::user_message::um_message)
+ .with_children(attr_line_handlers),
+ yajlpp::property_handler("reason")
+ .for_child(&console::user_message::um_reason)
+ .with_children(attr_line_handlers),
+ yajlpp::property_handler("snippets#")
+ .for_field(&console::user_message::um_snippets)
+ .with_children(snippet_handlers),
+ yajlpp::property_handler("help")
+ .for_child(&console::user_message::um_help)
+ .with_children(attr_line_handlers),
+};
+
+template<>
+Result<lnav::console::user_message, std::vector<console::user_message>>
+from_json(const std::string& json)
+{
+ static const auto STRING_SRC = intern_string::lookup("string");
+
+ return user_message_handlers.parser_for(STRING_SRC).of(json);
+}
+
+} // namespace lnav
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 00:49:57 +0000