Improve CCmdArgs (a generic command line parser in NeL Misc), fixes #257
This commit is contained in:
kervala
parent
e5d414fc5b
commit
2682f4f4af
3 changed files with 501 additions and 127 deletions
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@ -31,36 +31,86 @@ namespace NLMISC
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class CCmdArgs
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{
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public:
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/// Sets the command line and init _Args variable. You must call this before calling main()
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void setArgs (int argc, const char **argv);
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CCmdArgs();
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/// Sets the command line and init _Args variable. You must call this before calling main()
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void setArgs (const char *args);
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struct TArg
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{
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std::string shortName; // short argument. Eg: o for -o
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std::string longName; // long argument. Eg: output for --output
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std::string helpName; // name of argument in help. Eg: <output directory>
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std::string helpDescription; // description of argument in help. Eg: Specifies the directory where to write generated files
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bool found; // all values for this argument
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std::vector<std::string> values; // all values for this argument
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};
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typedef std::vector<TArg> TArgs;
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/// Add a TArg structure to arguments list.
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void addArg(const TArg &arg);
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/// Add an full argument to arguments list.
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/// shortName is "p" of the argument is -p
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/// longName is "print" of the argument is --print
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/// helpName is the name that will be displayed in help if it's a required argument
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/// helpDescription is the description of the argument that will be displayed in help
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void addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription);
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/// Add a required argument to arguments list.
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/// helpName is the name that will be displayed in help if it's a required argument
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/// helpDescription is the description of the argument that will be displayed in help
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void addArg(const std::string &helpName, const std::string &helpDescription);
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/// Parse the command line from main() parameters argc and argv and process default arguments.
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bool parse(int argc, char **argv);
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/// Parse the command line from a std::string and process default arguments.
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bool parse(const std::string &args);
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/// Parse the command linefrom a std::vector<std::string> and process default arguments.
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bool parse(const std::vector<std::string> &args);
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/// Returns arguments of the program pass from the user to the program using parameters (ie: "myprog param1 param2")
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const NLMISC::CVectorSString &getArgs () const { return _Args; }
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const TArgs& getArgs() const { return _Args; }
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/// Returns true if the argument if present in the command line (ie: haveArg('p') will return true if -p is in the command line)
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bool haveArg (char argName) const;
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/// Returns true if the argument if present in the command line (ie: haveArg("p") will return true if -p is in the command line)
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bool haveArg(const std::string &argName) const;
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/** Returns the parameter linked to an option
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* getArg('p') will return toto if -ptoto is in the command line
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* getArg('p') will return C:\Documents and Settings\toto.tmp if -p"C:\Documents and Settings\toto.tmp" is in the command line
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* It'll thrown an Exception if the argName is not found
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/** Returns the parameters linked to an option
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* getArg("p") will return toto if -ptoto is in the command line
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* getArg("p") will return C:\Documents and Settings\toto.tmp if -p"C:\Documents and Settings\toto.tmp" is in the command line
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*/
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std::string getArg (char argName) const;
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std::vector<std::string> getArg(const std::string &argName) const;
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/// return true if named long arg is present on the commandline
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/// eg haveLongArg("toto") returns true if "--toto" or "--toto=xxx" can be found on commandline
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bool haveLongArg (const char* argName) const;
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bool haveLongArg(const std::string &argName) const;
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/// returns the value associated with the given named argument
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/// returns values associated with the given named argument
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/// both "--toto=xxx" and "--toto xxx" are acceptable
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/// quotes round arguments are stripped
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std::string getLongArg (const char* argName) const;
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std::vector<std::string> getLongArg(const std::string &argName) const;
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/// return true if there are arguments that are required
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bool needRequiredArg() const;
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/// return true if required or optional args are present on the commandline
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bool haveRequiredArg() const;
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/// Returns all additional required parameters
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std::vector<std::string> getRequiredArg() const;
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/// Display help of the program.
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void displayHelp();
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/// Display version of the program.
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void displayVersion();
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protected:
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std::string _ProgramName;
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/// Array of arguments pass from the command line
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NLMISC::CVectorSString _Args;
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TArgs _Args;
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}; // class CCmdArgs
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}; // NAMESPACE NLMISC
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@ -18,12 +18,12 @@
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// Includes
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//
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#include "stdmisc.h"
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#include "nel/misc/types_nl.h"
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#include "nel/misc/sstring.h"
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#include "nel/misc/cmd_args.h"
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef DEBUG_NEW
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#define new DEBUG_NEW
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#endif
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@ -31,114 +31,170 @@
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namespace NLMISC
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{
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bool CCmdArgs::haveArg(char argName) const
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CCmdArgs::CCmdArgs()
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{
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for(uint32 i = 0; i < _Args.size(); i++)
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// add help
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addArg("h", "help", "", "Display this help");
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// add version
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addArg("v", "version", "", "Display version of this program");
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}
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void CCmdArgs::addArg(const TArg &arg)
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{
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_Args.push_back(arg);
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}
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void CCmdArgs::addArg(const std::string &shortName, const std::string &longName, const std::string &helpName, const std::string &helpDescription)
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{
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TArg arg;
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arg.shortName = shortName;
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arg.longName = longName;
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arg.helpName = helpName;
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arg.helpDescription = helpDescription;
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arg.found = false;
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addArg(arg);
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}
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void CCmdArgs::addArg(const std::string &helpName, const std::string &helpDescription)
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{
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TArg arg;
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arg.helpName = helpName;
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arg.helpDescription = helpDescription;
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arg.found = false;
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addArg(arg);
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}
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bool CCmdArgs::haveArg(const std::string &argName) const
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{
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// process each argument
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for(uint i = 0; i < _Args.size(); i)
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{
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if(_Args[i].size() >= 2 && _Args[i][0] == '-')
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{
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if(_Args[i][1] == argName)
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{
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return true;
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}
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}
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const TArg &arg = _Args[i];
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// return true if long arg found
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if (arg.shortName == argName) return arg.found;
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}
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return false;
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}
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std::string CCmdArgs::getArg(char argName) const
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std::vector<std::string> CCmdArgs::getArg(const std::string &argName) const
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{
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for(uint32 i = 0; i < _Args.size(); i++)
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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if(_Args[i].size() >= 2 && _Args[i][0] == '-')
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{
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if(_Args[i][1] == argName)
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{
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/* Remove the first and last '"' :
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-c"C:\Documents and Settings\toto.tmp"
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will return :
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C:\Documents and Settings\toto.tmp
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*/
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uint begin = 2;
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if(_Args[i].size() < 3)
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return "";
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//throw Exception ("Parameter '-%c' is malformed, missing content", argName);
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const TArg &arg = _Args[i];
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if(_Args[i][begin] == '"')
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begin++;
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// End
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uint size = (uint)_Args[i].size();
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if(size && _Args[i][size-1] == '"')
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size--;
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size = (uint)(std::max((int)0, (int)size-(int)begin));
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return _Args[i].substr(begin, size);
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}
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}
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// return values if short arg found
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if (arg.shortName == argName && arg.found) return arg.values;
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}
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throw Exception("Parameter '-%c' is not found in command line", argName);
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// return an empty vector
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return std::vector<std::string>();
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}
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bool CCmdArgs::haveLongArg(const char* argName) const
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bool CCmdArgs::haveLongArg(const std::string &argName) const
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{
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for(uint32 i = 0; i < _Args.size(); i++)
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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if(_Args[i].left(2)=="--" && _Args[i].leftCrop(2).splitTo('=')==argName)
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{
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const TArg &arg = _Args[i];
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// return true if long arg found
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if (arg.longName == argName) return arg.found;
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}
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return false;
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}
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std::vector<std::string> CCmdArgs::getLongArg(const std::string &argName) const
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{
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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const TArg &arg = _Args[i];
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// return values if long arg found
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if (arg.longName == argName && arg.found) return arg.values;
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}
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// return an empty vector
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return std::vector<std::string>();
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}
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bool CCmdArgs::needRequiredArg() const
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{
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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const TArg &arg = _Args[i];
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// they don't have any short or long name, but need a name in help
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if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
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return true;
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}
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}
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return false;
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}
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std::string CCmdArgs::getLongArg (const char* argName) const
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bool CCmdArgs::haveRequiredArg() const
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{
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for (uint32 i = 0; i < _Args.size(); i++)
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{
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if (_Args[i].left(2)=="--" && _Args[i].leftCrop(2).splitTo('=')==argName)
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{
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NLMISC::CSString val= _Args[i].splitFrom('=');
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if (!val.empty())
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{
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return val.unquoteIfQuoted();
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}
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if (i+1<_Args.size() && _Args[i+1].c_str()[0]!='-')
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{
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return _Args[i+1].unquoteIfQuoted();
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}
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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const TArg &arg = _Args[i];
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return std::string();
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}
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// they don't have any short or long name, but need a name in help
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if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
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return !arg.values.empty();
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}
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return std::string();
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return false;
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}
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void CCmdArgs::setArgs(const char *args)
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std::vector<std::string> CCmdArgs::getRequiredArg() const
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{
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_Args.push_back ("<ProgramName>");
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// process each argument
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for(uint i = 0; i < _Args.size(); ++i)
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{
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const TArg &arg = _Args[i];
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std::string sargs (args);
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// they don't have any short or long name, but need a name in help
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if (arg.shortName.empty() && arg.longName.empty() && !arg.helpName.empty())
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return arg.values;
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}
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// return an empty vector
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return std::vector<std::string>();
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}
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bool CCmdArgs::parse(const std::string &args)
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{
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std::vector<std::string> argv;
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std::string::size_type pos1 = 0, pos2 = 0;
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do
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{
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// Look for the first non space character
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pos1 = sargs.find_first_not_of (" ", pos2);
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pos1 = args.find_first_not_of (" ", pos2);
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if(pos1 == std::string::npos) break;
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// Look for the first space or "
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pos2 = sargs.find_first_of (" \"", pos1);
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pos2 = args.find_first_of (" \"", pos1);
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if(pos2 != std::string::npos)
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{
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// " ?
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if(sargs[pos2] == '"')
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if(args[pos2] == '"')
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{
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// Look for the final \"
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pos2 = sargs.find_first_of ("\"", pos2+1);
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pos2 = args.find_first_of ("\"", pos2+1);
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if(pos2 != std::string::npos)
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{
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// Look for the first space
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pos2 = sargs.find_first_of (" ", pos2+1);
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pos2 = args.find_first_of (" ", pos2+1);
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}
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}
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}
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@ -146,18 +202,277 @@ void CCmdArgs::setArgs(const char *args)
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// Compute the size of the string to extract
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std::string::difference_type length = (pos2 != std::string::npos) ? pos2-pos1 : std::string::npos;
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std::string tmp = sargs.substr (pos1, length);
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_Args.push_back (tmp);
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std::string tmp = args.substr (pos1, length);
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argv.push_back (tmp);
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}
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while(pos2 != std::string::npos);
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return parse(argv);
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}
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void CCmdArgs::setArgs(int argc, const char **argv)
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bool CCmdArgs::parse(int argc, char **argv)
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{
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for (sint i = 0; i < argc; i++)
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// convert C strings to STL strings
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std::vector<std::string> args;
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for(sint i = 0; i < argc; ++i)
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{
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_Args.push_back (argv[i]);
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args.push_back(argv[i]);
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}
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return parse(args);
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}
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bool CCmdArgs::parse(const std::vector<std::string> &argv)
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{
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// no parameters
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if (argv.empty()) return false;
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// first argument is always the program name
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_ProgramName = CFile::getFilename(argv.front());
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// arguments count
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uint argc = argv.size();
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// process each argument
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for (sint i = 1; i < argc; i++)
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{
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std::string name = argv[i];
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#ifdef NL_OS_WINDOWS
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// support / and - under Windows, arguments should be at least 2 characters
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if (name.size() > 1 && (name[0] == '-' || name[0] == '/'))
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#else
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if (name.size() > 1 && name[0] == '-')
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#endif
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{
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// it's a long name if using --
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bool useLongName = name[0] == '-' && name[1] == '-';
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// extract argument name
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name = name.substr(useLongName ? 2:1);
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std::string value;
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if (useLongName)
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{
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// look if using = to define value
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std::string::size_type pos = name.find('=');
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if (pos != std::string::npos)
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{
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// value is second part, name the first one
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value = name.substr(pos+1);
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name = name.substr(0, pos);
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}
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}
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else if (name.length() > 1)
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{
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value = name.substr(1);
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name = name.substr(0, 1);
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}
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// process each argument definition
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for(uint j = 0; j < _Args.size(); ++j)
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{
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TArg &arg = _Args[j];
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// only process arguments of the right type
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if ((useLongName && name != arg.longName) || (!useLongName && name != arg.shortName)) continue;
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// argument is found
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arg.found = true;
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// another argument is required
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if (!arg.helpName.empty())
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{
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// if the value hasn't be specified by =
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if (value.empty() && i+1 < argc)
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{
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// take next argument
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value = argv[++i];
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}
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// add argument value if not empty
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if (!value.empty())
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{
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arg.values.push_back(value);
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}
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}
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break;
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}
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}
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else
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{
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// process each argument definition
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for(uint j = 0, len = _Args.size(); j < len; ++j)
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{
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TArg &arg = _Args[j];
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// only process arguments that don't have a name
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if (!arg.shortName.empty() || !arg.longName.empty()) continue;
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// in fact, if there are more than one required arguments, all arguments are added in first one to simplify
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arg.values.push_back(name);
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break;
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}
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}
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}
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// process help if requested or if required arguments are missing
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if (haveLongArg("help") || (needRequiredArg() && !haveRequiredArg()))
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{
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displayHelp();
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return false;
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}
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// process version
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if (haveLongArg("version"))
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{
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||||
displayVersion();
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void CCmdArgs::displayHelp()
|
||||
{
|
||||
// display program name
|
||||
printf("Usage: %s ", _ProgramName.c_str());
|
||||
|
||||
// display optional parameters
|
||||
for(uint i = 0; i < _Args.size(); ++i)
|
||||
{
|
||||
const TArg &arg = _Args[i];
|
||||
|
||||
// only short argument is displayed
|
||||
if (!arg.shortName.empty())
|
||||
{
|
||||
printf("[-%s", arg.shortName.c_str());
|
||||
|
||||
// a parameter is required
|
||||
if (!arg.helpName.empty())
|
||||
{
|
||||
printf("<%s>", arg.helpName.c_str());
|
||||
}
|
||||
|
||||
printf("]");
|
||||
}
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
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())
|
||||
{
|
||||
printf(" <%s>", arg.helpName.c_str());
|
||||
|
||||
// if last argument, it can support additional arguments
|
||||
if ((sint)i == last)
|
||||
{
|
||||
printf(" [%s...]", arg.helpName.c_str());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
|
||||
// display details on each argument
|
||||
for(uint i = 0; i < _Args.size(); ++i)
|
||||
{
|
||||
const TArg &arg = _Args[i];
|
||||
|
||||
// not an optional argument
|
||||
if (arg.shortName.empty() && arg.longName.empty()) continue;
|
||||
|
||||
// a tab
|
||||
printf("\t");
|
||||
|
||||
// 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());
|
||||
}
|
||||
}
|
||||
|
||||
// display long argument
|
||||
if (!arg.longName.empty())
|
||||
{
|
||||
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());
|
||||
}
|
||||
|
||||
// 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 argument description
|
||||
if (!arg.helpDescription.empty())
|
||||
{
|
||||
printf(" : %s", arg.helpDescription.c_str());
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
// process each argument
|
||||
for(uint i = 0; i < _Args.size(); ++i)
|
||||
{
|
||||
const TArg &arg = _Args[i];
|
||||
|
||||
// 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());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
#endif
|
||||
}
|
||||
|
||||
}; // NAMESPACE NLMISC
|
||||
|
|
|
|||
|
|
@ -24,54 +24,63 @@
|
|||
#include <nel/3d/register_3d.h>
|
||||
#include <nel/3d/scene.h>
|
||||
|
||||
int printHelp(const NLMISC::CCmdArgs &args)
|
||||
{
|
||||
printf("NeL Mesh Export\n");
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
NLMISC::CApplicationContext app;
|
||||
|
||||
NLMISC::CCmdArgs args;
|
||||
args.setArgs(argc, (const char **)argv);
|
||||
|
||||
if (args.getArgs().size() == 1
|
||||
|| args.haveArg('h')
|
||||
|| args.haveLongArg("help"))
|
||||
return printHelp(args);
|
||||
args.addArg("d", "dst", "destination", "Destination directory path");
|
||||
args.addArg("", "dependlog", "log", "Dependencies log path");
|
||||
args.addArg("", "errorlog", "log", "Errors log path");
|
||||
args.addArg("filename", "Filename of 3D model to convert");
|
||||
|
||||
const NLMISC::CSString &filePath = args.getArgs().back();
|
||||
if (!NLMISC::CFile::fileExists(filePath))
|
||||
{
|
||||
printHelp(args);
|
||||
nlerror("File '%s' does not exist", filePath.c_str());
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (!args.parse(argc, argv)) return EXIT_SUCCESS;
|
||||
|
||||
CMeshUtilsSettings settings;
|
||||
settings.SourceFilePath = filePath;
|
||||
|
||||
if (args.haveArg('d'))
|
||||
settings.DestinationDirectoryPath = args.getArg('d');
|
||||
if (settings.DestinationDirectoryPath.empty())
|
||||
settings.DestinationDirectoryPath = args.getLongArg("dst");
|
||||
if (settings.DestinationDirectoryPath.empty())
|
||||
settings.DestinationDirectoryPath = filePath + "_export";
|
||||
settings.DestinationDirectoryPath += "/";
|
||||
|
||||
settings.ToolDependLog = args.getLongArg("dependlog");
|
||||
if (settings.ToolDependLog.empty())
|
||||
settings.ToolDependLog = settings.DestinationDirectoryPath + "depend.log";
|
||||
settings.ToolErrorLog = args.getLongArg("errorlog");
|
||||
if (settings.ToolErrorLog.empty())
|
||||
settings.ToolErrorLog = settings.DestinationDirectoryPath + "error.log";
|
||||
const std::vector<std::string> &filePathes = args.getRequiredArg();
|
||||
|
||||
NL3D::CScene::registerBasics();
|
||||
NL3D::registerSerial3d();
|
||||
|
||||
return exportScene(settings);
|
||||
sint res = 0;
|
||||
|
||||
for(uint i = 0; i < filePathes.size(); ++i)
|
||||
{
|
||||
std::string filePath = filePathes[i];
|
||||
|
||||
if (!NLMISC::CFile::fileExists(filePath))
|
||||
{
|
||||
nlerror("File '%s' does not exist", filePath.c_str());
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
CMeshUtilsSettings settings;
|
||||
settings.SourceFilePath = filePath;
|
||||
|
||||
if (args.haveArg("d"))
|
||||
settings.DestinationDirectoryPath = args.getArg("d").front();
|
||||
|
||||
if (settings.DestinationDirectoryPath.empty())
|
||||
settings.DestinationDirectoryPath = filePath + "_export";
|
||||
|
||||
settings.DestinationDirectoryPath = NLMISC::standardizePath(settings.DestinationDirectoryPath);
|
||||
|
||||
if (args.haveLongArg("dependlog"))
|
||||
settings.ToolDependLog = args.getLongArg("dependlog").front();
|
||||
|
||||
if (settings.ToolDependLog.empty())
|
||||
settings.ToolDependLog = settings.DestinationDirectoryPath + "depend.log";
|
||||
|
||||
if (args.haveLongArg("errorlog"))
|
||||
settings.ToolErrorLog = args.getLongArg("errorlog").front();
|
||||
|
||||
if (settings.ToolErrorLog.empty())
|
||||
settings.ToolErrorLog = settings.DestinationDirectoryPath + "error.log";
|
||||
|
||||
res = exportScene(settings);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/* end of file */
|
||||
|
|
|
|||
Loading…
Reference in a new issue