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Changed: Improved CCmdArgs

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kervala 2016-01-18 21:22:57 +01:00
parent 61b97e7eea
commit 38a59355b8
2 changed files with 136 additions and 59 deletions
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41
code/nel/include/nel/misc/cmd_args.h
View file

@ -40,6 +40,8 @@ public:
std::string helpName; // name of argument in help. Eg: <output directory>
std::string helpDescription; // description of argument in help. Eg: Specifies the directory where to write generated files
bool onlyOnce; // only one argument of this type is used, if several are provided, only the last one is kept
bool required; // at least one argument of this type must be provided
bool found; // all values for this argument
std::vector<std::string> values; // all values for this argument
@ -55,12 +57,15 @@ public:
/// longName is "print" of the argument is --print
/// helpName is the name that will be displayed in help if it's a required argument
/// helpDescription is the description of the argument that will be displayed in help
void addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription);
/// onlyOnce can be set to false, if we allows to use this argument more than once
void addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription, bool onlyOnce = true);
/// Add a required argument to arguments list.
/// Add a additional argument to arguments list.
/// helpName is the name that will be displayed in help if it's a required argument
/// helpDescription is the description of the argument that will be displayed in help
void addArg(const std::string &helpName, const std::string &helpDescription);
/// onlyOnce can be set to false, if we allows to use this argument more than once
/// required can be set to false, if this argument is required
void addAdditionalArg(const std::string &name, const std::string &helpDescription, bool onlyOnce = true, bool required = true);
/// Parse the command line from main() parameters argc and argv and process default arguments.
bool parse(int argc, char **argv);
@ -93,21 +98,39 @@ public:
std::vector<std::string> getLongArg(const std::string &argName) const;
/// return true if there are arguments that are required
bool needRequiredArg() const;
bool needAdditionalArg() const;
/// return true if required or optional args are present on the commandline
bool haveRequiredArg() const;
/// return true if any additional args are present on the commandline
bool haveAdditionalArg() const;
/// Returns all additional required parameters
std::vector<std::string> getRequiredArg() const;
/// return true if a specific additional arg is present on the commandline
bool haveAdditionalArg(const std::string &name) const;
/// Returns values of a specific additional arg
std::vector<std::string> getAdditionalArg(const std::string &name) const;
/// Display help of the program.
void displayHelp();
/// Display version of the program.
void displayVersion();
/// Returns program name or path passed as first parameter to parse() method
std::string getProgramName() const { return _ProgramName; }
std::string getProgramPath() const { return _ProgramPath; }
/// Set or get description to display in help
void setDescription(const std::string &description) { _Description = description; }
std::string getDescription() const { return _Description; }
/// Set or get version to display in -v
void setVersion(const std::string &version) { _Version = version; }
std::string getVersion() const { return _Version; }
protected:
std::string _ProgramName;
std::string _ProgramName; // filename of the program
std::string _ProgramPath; // full path of the program
std::string _Description; // description of the program
std::string _Version; // version of the program
/// Array of arguments pass from the command line
TArgs _Args;

154
code/nel/src/misc/cmd_args.cpp
View file

@ -33,6 +33,10 @@ namespace NLMISC
CCmdArgs::CCmdArgs()
{
#ifdef NL_VERSION
_Version = NL_VERSION;
#endif
// add help
addArg("h", "help", "", "Display this help");
@ -45,24 +49,28 @@ void CCmdArgs::addArg(const TArg &arg)
_Args.push_back(arg);
}
void CCmdArgs::addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription)
void CCmdArgs::addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription, bool onlyOnce)
{
TArg arg;
arg.shortName = shortName;
arg.longName = longName;
arg.helpName = helpName;
arg.helpDescription = helpDescription;
arg.onlyOnce = onlyOnce;
arg.found = false;
arg.required = false;
addArg(arg);
}
void CCmdArgs::addArg(const std::string &helpName, const std::string &helpDescription)
void CCmdArgs::addAdditionalArg(const std::string &helpName, const std::string &helpDescription, bool onlyOnce, bool required)
{
TArg arg;
arg.helpName = helpName;
arg.helpDescription = helpDescription;
arg.onlyOnce = onlyOnce;
arg.found = false;
arg.required = required;
addArg(arg);
}
@ -125,7 +133,7 @@ std::vector<std::string> CCmdArgs::getLongArg(const std::string &argName) const
return std::vector<std::string>();
}
bool CCmdArgs::needRequiredArg() const
bool CCmdArgs::needAdditionalArg() const
{
// process each argument
for(uint i = 0; i < _Args.size(); ++i)
@ -133,14 +141,14 @@ bool CCmdArgs::needRequiredArg() const
const TArg &arg = _Args[i];
// they don't have any short or long name, but need a name in help
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty() && arg.required)
return true;
}
return false;
}
bool CCmdArgs::haveRequiredArg() const
bool CCmdArgs::haveAdditionalArg() const
{
// process each argument
for(uint i = 0; i < _Args.size(); ++i)
@ -148,14 +156,14 @@ bool CCmdArgs::haveRequiredArg() const
const TArg &arg = _Args[i];
// they don't have any short or long name, but need a name in help
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
return !arg.values.empty();
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty() && arg.found)
return false;
}
return false;
}
std::vector<std::string> CCmdArgs::getRequiredArg() const
bool CCmdArgs::haveAdditionalArg(const std::string &name) const
{
// process each argument
for(uint i = 0; i < _Args.size(); ++i)
@ -163,7 +171,22 @@ std::vector<std::string> CCmdArgs::getRequiredArg() const
const TArg &arg = _Args[i];
// they don't have any short or long name, but need a name in help
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty() && arg.helpName == name && arg.found)
return false;
}
return false;
}
std::vector<std::string> CCmdArgs::getAdditionalArg(const std::string &name) const
{
// process each argument
for(uint i = 0; i < _Args.size(); ++i)
{
const TArg &arg = _Args[i];
// they don't have any short or long name, but need a name in help
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty() && arg.helpName == name)
return arg.values;
}
@ -174,6 +197,15 @@ std::vector<std::string> CCmdArgs::getRequiredArg() const
bool CCmdArgs::parse(const std::string &args)
{
std::vector<std::string> argv;
#ifdef NL_OS_WINDOWS
char str[4096];
uint len = GetModuleFileNameA(NULL, str, 4096);
if (len && len < 4096)
argv.push_back(str);
#endif
std::string::size_type pos1 = 0, pos2 = 0;
do
@ -230,6 +262,7 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
// first argument is always the program name
_ProgramName = CFile::getFilename(argv.front());
_ProgramPath = CPath::standardizePath(CFile::getPath(argv.front()));
// arguments count
uint argc = argv.size();
@ -272,6 +305,8 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
name = name.substr(0, 1);
}
bool found = false;
// process each argument definition
for(uint j = 0; j < _Args.size(); ++j)
{
@ -280,8 +315,15 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
// only process arguments of the right type
if ((useLongName && name != arg.longName) || (!useLongName && name != arg.shortName)) continue;
// already get the only once argument
if (arg.found && arg.onlyOnce)
{
// the last one is the only kept, so discard previous ones
arg.values.clear();
}
// argument is found
arg.found = true;
found = arg.found = true;
// another argument is required
if (!arg.helpName.empty())
@ -302,6 +344,11 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
break;
}
if (!found)
{
printf("Warning: Argument %s not recognized, skip it!\n", name.c_str());
}
}
else
{
@ -313,6 +360,11 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
// only process arguments that don't have a name
if (!arg.shortName.empty() || !arg.longName.empty()) continue;
// already get the only once argument
if (arg.found && arg.onlyOnce) continue;
arg.found = true;
// in fact, if there are more than one required arguments, all arguments are added in first one to simplify
arg.values.push_back(name);
@ -329,7 +381,7 @@ bool CCmdArgs::parse(const std::vector<std::string> &argv)
}
// process help if requested or if required arguments are missing
if (haveLongArg("help") || (needRequiredArg() && !haveRequiredArg()))
if (haveLongArg("help") || (needAdditionalArg() && !haveAdditionalArg()))
{
displayHelp();
return false;
@ -363,14 +415,6 @@ void CCmdArgs::displayHelp()
}
}
sint last = -1;
// look for last required argument
for(uint i = 0; i < _Args.size(); ++i)
{
if (_Args[i].shortName.empty()) last = (sint)i;
}
// display required arguments
for(uint i = 0; i < _Args.size(); ++i)
{
@ -379,18 +423,24 @@ void CCmdArgs::displayHelp()
// they don't have any short or long name, but need a name in help
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
{
printf(" <%s>", arg.helpName.c_str());
printf(" %c%s", arg.required ? '<':'[', arg.helpName.c_str());
// if last argument, it can support additional arguments
if ((sint)i == last)
{
printf(" [%s...]", arg.helpName.c_str());
}
// if support more than once argument
if (!arg.onlyOnce) printf("...");
printf("%c", arg.required ? '>':']');
}
}
printf("\n");
if (!_Description.empty())
{
printf("\n%s", _Description.c_str());
}
printf("\nWhere options are:\n");
// display details on each argument
for(uint i = 0; i < _Args.size(); ++i)
{
@ -399,19 +449,23 @@ void CCmdArgs::displayHelp()
// not an optional argument
if (arg.shortName.empty() && arg.longName.empty()) continue;
// a tab
printf("\t");
// 2 spaces
printf(" ");
std::vector<std::string> syntaxes;
// display short argument
if (!arg.shortName.empty())
{
printf("-%s", arg.shortName.c_str());
// and it's required argument
if (!arg.helpName.empty())
{
printf(" <%s>", arg.helpName.c_str());
printf(" or -%s<%s>", arg.shortName.c_str(), arg.helpName.c_str());
syntaxes.push_back(toString("-%s <%s>", arg.shortName.c_str(), arg.helpName.c_str()));
syntaxes.push_back(toString("-%s<%s>", arg.shortName.c_str(), arg.helpName.c_str()));
}
else
{
syntaxes.push_back(toString("-%s", arg.shortName.c_str()));
}
}
@ -420,29 +474,29 @@ void CCmdArgs::displayHelp()
{
if (!arg.helpName.empty())
{
// prepend a coma if a short argument was already displayed
if (!arg.shortName.empty())
{
printf(", ");
}
// display first syntax for long argument, --arg <value>
printf("--%s <%s>", arg.longName.c_str(), arg.helpName.c_str());
syntaxes.push_back(toString("--%s <%s>", arg.longName.c_str(), arg.helpName.c_str()));
}
// prepend " or " if 3 formats for argument
if (!arg.shortName.empty() || !arg.helpName.empty())
{
printf(" or ");
}
// display second syntax for long argument, --arg=<value>
printf("--%s", arg.longName.c_str());
if (!arg.helpName.empty())
{
printf("=<%s>", arg.helpName.c_str());
// display second syntax for long argument, --arg=<value>
syntaxes.push_back(toString("--%s=<%s>", arg.longName.c_str(), arg.helpName.c_str()));
}
else
{
syntaxes.push_back(toString("--%s", arg.longName.c_str()));
}
}
for(uint j = 0; j < syntaxes.size(); ++j)
{
if (j > 0)
{
printf("%s ", (j == syntaxes.size() - 1) ? " or":",");
}
printf("%s", syntaxes[j].c_str());
}
// display argument description
@ -462,7 +516,7 @@ void CCmdArgs::displayHelp()
// only display required arguments
if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty() && !arg.helpDescription.empty())
{
printf("\t%s : %s\n", arg.helpName.c_str(), arg.helpDescription.c_str());
printf(" %s : %s\n", arg.helpName.c_str(), arg.helpDescription.c_str());
}
}
}
@ -471,7 +525,7 @@ void CCmdArgs::displayVersion()
{
// display a verbose version string
#ifdef BUILD_DATE
printf("%s %s (built on %s)\nCopyright (C) %s\n", _ProgramName.c_str(), NL_VERSION, BUILD_DATE, COPYRIGHT);
printf("%s %s (built on %s)\nCopyright (C) %s\n", _ProgramName.c_str(), _Version.c_str(), BUILD_DATE, COPYRIGHT);
#endif
}