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new 121948b ArgParser: Standardize version message and other updates
121948b is described below
commit 121948b6320e2d668b9c0dbafdfce321c5062043
Author: Xavier Chi <chitianha...@gmail.com>
AuthorDate: Thu Nov 8 15:08:46 2018 -0600
ArgParser: Standardize version message and other updates
---
.../internal-libraries/ArgParser.en.rst | 8 +++++-
include/tscore/ArgParser.h | 1 +
src/traffic_cache_tool/Makefile.inc | 5 ++++
src/traffic_layout/traffic_layout.cc | 5 ++--
src/tscore/ArgParser.cc | 33 ++++++++++++++++++++--
5 files changed, 46 insertions(+), 6 deletions(-)
diff --git a/doc/developer-guide/internal-libraries/ArgParser.en.rst
b/doc/developer-guide/internal-libraries/ArgParser.en.rst
index 6e16197..1448a90 100644
--- a/doc/developer-guide/internal-libraries/ArgParser.en.rst
+++ b/doc/developer-guide/internal-libraries/ArgParser.en.rst
@@ -144,11 +144,13 @@ from the :class:`Arguments` object returned from the
parsing. The function can b
args.invoke();
-Help message
+Help and Version messages
-------------------------
- Help message will be outputted when a wrong usage of the program is detected
or `--help` option found.
+- Version message is defined unified in :code:`ArgParser::version_message()`.
+
Classes
+++++++
@@ -175,6 +177,10 @@ Classes
Output usage to the console.
+ .. function:: void version_message() const
+
+ Output version string to the console.
+
.. function:: void add_global_usage(std::string const &usage)
Add a global_usage for :code:`help_message()`. Example: `traffic_blabla
[--SWITCH [ARG]]`.
diff --git a/include/tscore/ArgParser.h b/include/tscore/ArgParser.h
index 927882d..95a5a2d 100644
--- a/include/tscore/ArgParser.h
+++ b/include/tscore/ArgParser.h
@@ -175,6 +175,7 @@ public:
bool parse(Arguments &ret, AP_StrVec &args);
// The help & version messages
void help_message(std::string_view err = "") const;
+ void version_message() const;
// Helpr method for parse()
void append_option_data(Arguments &ret, AP_StrVec &args, int index);
// The command name and help message
diff --git a/src/traffic_cache_tool/Makefile.inc
b/src/traffic_cache_tool/Makefile.inc
index 8206380..6cb9430 100644
--- a/src/traffic_cache_tool/Makefile.inc
+++ b/src/traffic_cache_tool/Makefile.inc
@@ -48,4 +48,9 @@ traffic_cache_tool_traffic_cache_tool_LDADD = \
$(top_builddir)/src/tscore/.libs/Regex.o \
$(top_builddir)/src/tscore/.libs/CryptoHash.o \
$(top_builddir)/src/tscore/.libs/MMH.o \
+ $(top_builddir)/src/tscore/.libs/Version.o \
+ $(top_builddir)/src/tscore/.libs/Regression.o \
+ $(top_builddir)/src/tscore/.libs/ink_args.o \
+ $(top_builddir)/src/tscore/.libs/ParseRules.o \
+ $(top_builddir)/src/tscore/.libs/SourceLocation.o \
@OPENSSL_LIBS@ @LIBPCRE@ @LIBTCL@
diff --git a/src/traffic_layout/traffic_layout.cc
b/src/traffic_layout/traffic_layout.cc
index a0095d1..a7bd66d 100644
--- a/src/traffic_layout/traffic_layout.cc
+++ b/src/traffic_layout/traffic_layout.cc
@@ -40,8 +40,9 @@ main(int argc, const char **argv)
engine.parser.add_global_usage("traffic_layout CMD [OPTIONS]");
// global options
- engine.parser.add_option("--help", "-h", "Print usage information");
- engine.parser.add_option("--run-root", "", "using TS_RUNROOT as sandbox",
"", 1);
+ engine.parser.add_option("--help", "-h", "Print usage information")
+ .add_option("--run-root", "", "using TS_RUNROOT as sandbox", "", 1)
+ .add_option("--version", "-V", "Print version string");
// info command
engine.parser.add_command("info", "Show the layout as default", [&]() {
engine.info(); })
diff --git a/src/tscore/ArgParser.cc b/src/tscore/ArgParser.cc
index 349eb65..6f3f477 100644
--- a/src/tscore/ArgParser.cc
+++ b/src/tscore/ArgParser.cc
@@ -22,10 +22,13 @@
*/
#include "tscore/ArgParser.h"
+#include "tscore/ink_file.h"
+#include "tscore/I_Version.h"
#include <iostream>
#include <set>
#include <sstream>
+#include <sysexits.h>
std::string global_usage;
std::string parser_program_name;
@@ -76,7 +79,7 @@ ArgParser::add_global_usage(std::string const &usage)
void
ArgParser::help_message(std::string_view err) const
{
- return _top_level_command.help_message(err);
+ _top_level_command.help_message(err);
}
// a graceful way to output help message
@@ -103,6 +106,17 @@ ArgParser::Command::help_message(std::string_view err)
const
if (!_example_usage.empty()) {
std::cout << "\nExample Usage: " << _example_usage << std::endl;
}
+ // standard return code
+ exit(EX_USAGE);
+}
+
+void
+ArgParser::Command::version_message() const
+{
+ // unified version message of ATS
+ AppVersionInfo appVersionInfo;
+ appVersionInfo.setup(PACKAGE_NAME, _name.c_str(), PACKAGE_VERSION, __DATE__,
__TIME__, BUILD_MACHINE, BUILD_PERSON, "");
+ ink_fputln(stdout, appVersionInfo.FullVersionInfoStr);
exit(0);
}
@@ -158,7 +172,16 @@ ArgParser::parse(const char **argv)
for (const auto &it : args) {
msg = msg + " '" + it + "'";
}
- _top_level_command.help_message(msg);
+ // find the correct level to output help message
+ ArgParser::Command *command = &_top_level_command;
+ for (unsigned i = 1; i < _argv.size(); i++) {
+ auto it = command->_subcommand_list.find(_argv[i]);
+ if (it == command->_subcommand_list.end()) {
+ break;
+ }
+ command = &it->second;
+ }
+ command->help_message(msg);
}
return ret;
}
@@ -398,8 +421,12 @@ ArgParser::Command::append_option_data(Arguments &ret,
AP_StrVec &args, int inde
i -= 1;
}
} else {
+ // output version message
+ if ((args[i] == "--version" || args[i] == "-V") &&
_option_list.find("--version") != _option_list.end()) {
+ version_message();
+ }
// output help message
- if (args[i] == "--help" || args[i] == "-h") {
+ if ((args[i] == "--help" || args[i] == "-h") &&
_option_list.find("--help") != _option_list.end()) {
ArgParser::Command *command = this;
// find the correct level to output help messsage
for (unsigned i = 1; i < args.size(); i++) {
