b6803cdfd2
In many cases it should be 'either', and 'nor' should be 'or' accordingly. No changes to actual code. See #22723. (cherry picked from commit 66916c74a3d44e8bc1b30cf42309e36e5d9e9135)
761 lines
25 KiB
Objective-C
761 lines
25 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: cmdline.h
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// Purpose: interface of wxCmdLineParser
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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wxCmdLineEntryDesc::flags field is a combination of these bit masks.
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Notice that by default (i.e. if flags are just 0), options are optional
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(sic) and each call to wxCmdLineParser::AddParam() allows one more
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parameter - this may be changed by giving non-default flags to it, i.e. use
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@c wxCMD_LINE_OPTION_MANDATORY to require that the option is given and
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@c wxCMD_LINE_PARAM_OPTIONAL to make a parameter optional.
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Also, @c wxCMD_LINE_PARAM_MULTIPLE may be specified if the programs accepts a
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variable number of parameters - but it only can be given for the last
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parameter in the command line description. If you use this flag, you will
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probably need to use wxCmdLineEntryDesc::GetParamCount() to retrieve the
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number of parameters effectively specified after calling
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wxCmdLineEntryDesc::Parse().
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@c wxCMD_LINE_NEEDS_SEPARATOR can be specified to require a separator (either
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a colon, an equal sign or white space) between the option name and its
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value. By default, no separator is required.
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@c wxCMD_LINE_SWITCH_NEGATABLE can be specified if you want to allow the
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user to specify the switch in both normal form and in negated one (e.g.
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/R-). You will need to use wxCmdLineParser::FoundSwitch() to distinguish
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between the normal and negated forms of the switch. This flag is new since
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wxWidgets 2.9.2.
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@c wxCMD_LINE_HIDDEN can be specified for arguments that should exist but
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are not to be included in the output of Usage(). These could be, for
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example, diagnostics switches that are not useful to the end user.
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This flags is new since wxWidgets 3.1.1.
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*/
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enum wxCmdLineEntryFlags
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{
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wxCMD_LINE_OPTION_MANDATORY = 0x01, ///< This option must be given.
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wxCMD_LINE_PARAM_OPTIONAL = 0x02, ///< The parameter may be omitted.
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wxCMD_LINE_PARAM_MULTIPLE = 0x04, ///< The parameter may be repeated.
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wxCMD_LINE_OPTION_HELP = 0x08, ///< This option is a help request.
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wxCMD_LINE_NEEDS_SEPARATOR = 0x10, ///< Must have a separator before the value.
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wxCMD_LINE_SWITCH_NEGATABLE = 0x20, ///< This switch can be negated (e.g. /S-)
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wxCMD_LINE_HIDDEN = 0x40 ///< This switch is not listed by Usage()
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};
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/**
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The possible values of wxCmdLineEntryDesc::type which specify the type of
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the value accepted by an option.
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*/
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enum wxCmdLineParamType
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{
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wxCMD_LINE_VAL_STRING,
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wxCMD_LINE_VAL_NUMBER,
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wxCMD_LINE_VAL_DATE,
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wxCMD_LINE_VAL_DOUBLE,
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wxCMD_LINE_VAL_NONE
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};
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/**
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The type of a command line entity used for wxCmdLineEntryDesc::kind.
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*/
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enum wxCmdLineEntryType
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{
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/// A boolean argument of the program; e.g. @c -v to enable verbose mode.
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wxCMD_LINE_SWITCH,
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/// An argument with an associated value; e.g. @c "-o filename" to specify
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/// an optional output filename.
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wxCMD_LINE_OPTION,
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/// A parameter: a required program argument.
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wxCMD_LINE_PARAM,
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/// Additional usage text. See wxCmdLineParser::AddUsageText.
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wxCMD_LINE_USAGE_TEXT,
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wxCMD_LINE_NONE ///< Use this to terminate the list.
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};
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/**
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The state of a switch as returned by wxCmdLineParser::FoundSwitch().
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@since 2.9.2
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*/
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enum wxCmdLineSwitchState
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{
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/// The switch was found in negated form, i.e. followed by a '-'.
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wxCMD_SWITCH_OFF,
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/// The switch was not found at all on the command line.
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wxCMD_SWITCH_NOT_FOUND
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/// The switch was found (and was not negated)
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wxCMD_SWITCH_ON
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};
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/**
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Flags determining wxCmdLineParser::ConvertStringToArgs() behaviour.
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*/
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enum wxCmdLineSplitType
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{
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wxCMD_LINE_SPLIT_DOS,
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wxCMD_LINE_SPLIT_UNIX
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};
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/**
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The structure wxCmdLineEntryDesc is used to describe a command line
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switch, option or parameter. An array of such structures should be passed
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to wxCmdLineParser::SetDesc().
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Note that the meanings of parameters of the wxCmdLineParser::AddXXX() functions
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are the same as of the corresponding fields in this structure.
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*/
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struct wxCmdLineEntryDesc
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{
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/**
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The kind of this program argument.
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See ::wxCmdLineEntryType for more info.
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*/
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wxCmdLineEntryType kind;
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/**
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The usual, short, name of the switch or the option.
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It may contain only letters, digits and the underscores.
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This field is unused if <tt>kind == wxCMD_LINE_PARAM</tt>.
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*/
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const char *shortName;
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/**
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The long name for this program argument (may be empty if the option
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has no long name).
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It may contain only letters, digits and the underscores.
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This field is unused if <tt>kind == wxCMD_LINE_PARAM</tt>.
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*/
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const char *longName;
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/**
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This description is used by the wxCmdLineParser::Usage() method to
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construct a help message explaining the syntax of the program.
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*/
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const char *description;
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/**
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The type associated with this option (ignored if <tt>kind != wxCMD_LINE_OPTION</tt>).
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See ::wxCmdLineParamType for more info.
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*/
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wxCmdLineParamType type;
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/**
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A combination of one or more ::wxCmdLineEntryFlags enum values.
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*/
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int flags;
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};
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/**
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The interface wxCmdLineArg provides information for an instance of argument
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passed on command line.
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Example of use:
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@code
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wxCmdLineParser parser;
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for (wxCmdLineArgs::const_iterator itarg=parser.GetArguments().begin();
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itarg!=parser.GetArguments().end();
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++itarg)
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{
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wxString optionName;
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switch (itarg->GetKind())
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{
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case wxCMD_LINE_SWITCH:
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if (itarg->IsNegated()) {
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}
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else {
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}
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break;
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case wxCMD_LINE_OPTION:
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// assuming that all the options have a short name
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optionName = itarg->GetShortName();
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switch (itarg->GetType()) {
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case wxCMD_LINE_VAL_NUMBER:
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// do something with itarg->GetLongVal();
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break;
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case wxCMD_LINE_VAL_DOUBLE:
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// do something with itarg->GetDoubleVal();
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break;
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case wxCMD_LINE_VAL_DATE:
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// do something with itarg->GetDateVal();
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break;
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case wxCMD_LINE_VAL_STRING:
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// do something with itarg->GetStrVal();
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break;
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}
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break;
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case wxCMD_LINE_PARAM:
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// do something with itarg->GetStrVal();
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break;
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}
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}
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@endcode
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With C++11, the for loop could be written:
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@code
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for (const auto &arg : parser.GetArguments()) {
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// working on arg as with *itarg above
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}
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@endcode
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@since 3.1.0
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*/
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class wxCmdLineArg
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{
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public:
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virtual ~wxCmdLineArg();
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/**
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Returns the command line argument value as a wxDateTime.
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@note This call works only for @c wxCMD_LINE_VAL_DATE options
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*/
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virtual const wxDateTime& GetDateVal() const = 0;
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/**
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Returns the command line argument value as a double.
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@note This call works only for @c wxCMD_LINE_VAL_DOUBLE options
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*/
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virtual double GetDoubleVal() const = 0;
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/**
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Returns the command line argument entry kind.
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@note Parameters can only be retrieved as strings, with GetStrVal()
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@see wxCmdLineEntryType, GetType()
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*/
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virtual wxCmdLineEntryType GetKind() const = 0;
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/**
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Returns the command line argument value as a long.
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@note This call works only for @c wxCMD_LINE_VAL_NUMBER options
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*/
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virtual long GetLongVal() const = 0;
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/**
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Returns the command line argument long name if any.
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@note This call makes sense only for options and switches
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*/
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virtual wxString GetLongName() const = 0;
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/**
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Returns the command line argument short name if any.
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@note This call makes sense only for options and switches
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*/
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virtual wxString GetShortName() const = 0;
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/**
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Returns the command line argument value as a string.
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@note This call works only for @c wxCMD_LINE_VAL_STRING options
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and parameters
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*/
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virtual const wxString& GetStrVal() const = 0;
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/**
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Returns the command line argument parameter type
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@note This call makes sense only for options
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(i.e. GetKind() == @c wxCMD_LINE_OPTION).
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@see wxCmdLineParamType, GetKind()
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*/
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virtual wxCmdLineParamType GetType() const = 0;
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/**
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Returns true if the switch was negated
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@note This call works only for switches.
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*/
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virtual bool IsNegated() const = 0;
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};
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/**
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An ordered collection of wxCmdLineArg providing an iterator to enumerate
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the arguments passed on command line.
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@see wxCmdLineParser::GetArguments()
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@since 3.1.0
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*/
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class wxCmdLineArgs
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{
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public:
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/**
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A bidirectional constant iterator exposing the command line arguments as
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wxCmdLineArg references.
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*/
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class const_iterator;
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const_iterator begin() const;
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const_iterator end() const;
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/**
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Returns the number of command line arguments in this collection.
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*/
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size_t size() const;
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};
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/**
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@class wxCmdLineParser
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wxCmdLineParser is a class for parsing the command line.
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It has the following features:
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- distinguishes options, switches and parameters
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- allows option grouping
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- allows both short and long options
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- automatically generates the usage message from the command line description
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- checks types of the options values (number, date, ...).
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To use it you should follow these steps:
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-# @ref cmdlineparser_construction "Construct" an object of this class
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giving it the command line to parse and optionally its description or
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use the @c AddXXX() functions later.
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-# Call Parse().
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-# Use Found() to retrieve the results.
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You can also use wxApp's default command line processing just overriding
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wxAppConsole::OnInitCmdLine() and wxAppConsole::OnCmdLineParsed().
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In the documentation below the following terminology is used:
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- @b switch: a boolean option which can be given or not, but which doesn't have
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any value. We use the word @e switch to distinguish
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such boolean options from more generic options like those
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described below. For example, @c "-v" might be a switch
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meaning "enable verbose mode".
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- @b option: a switch with a value associated to it.
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For example, @c "-o filename" might be an
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option for specifying the name of the output file.
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- @b parameter: a required program argument.
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@section cmdlineparser_construction Construction
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Before Parse() can be called, the command line parser object must have the
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command line to parse and also the rules saying which switches, options and
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parameters are valid - this is called command line description in what
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follows.
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You have complete freedom of choice as to when specify the required
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information, the only restriction is that it must be done before calling
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Parse().
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To specify the command line to parse you may use either one of constructors
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accepting it (wxCmdLineParser(int, char**) or
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wxCmdLineParser(const wxString&) usually) or, if you use the default
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constructor, you can do it later by calling SetCmdLine().
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The same holds for command line description: it can be specified either in
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the constructor (with or without the command line itself) or constructed
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later using either SetDesc() or combination of AddSwitch(), AddOption(),
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AddParam() and AddUsageText() methods.
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Using constructors or SetDesc() uses a (usually const static) table
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containing the command line description. If you want to decide which
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options to accept during the run-time, using one of the AddXXX() functions
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above might be preferable.
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@section cmdlineparser_customization Customization
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wxCmdLineParser has several global options which may be changed by the
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application. All of the functions described in this section should be
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called before Parse().
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First global option is the support for long (also known as GNU-style)
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options. The long options are the ones which start with two dashes and look
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like "\--verbose", i.e. they generally are complete words and not some
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abbreviations of them. As long options are used by more and more
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applications, they are enabled by default, but may be disabled with
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DisableLongOptions().
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Another global option is the set of characters which may be used to start
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an option (otherwise, the word on the command line is assumed to be a
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parameter). Under Unix, @c "-" is always used, but Windows has at least two
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common choices for this: @c "-" and @c "/". Some programs also use "+". The
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default is to use what suits most the current platform, but may be changed
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with SetSwitchChars() method.
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Finally, SetLogo() can be used to show some application-specific text
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before the explanation given by Usage() function.
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@section cmdlineparser_parsing Parsing the Command Line
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After the command line description was constructed and the desired options
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were set, you can finally call Parse() method. It returns 0 if the command
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line was correct and was parsed, -1 if the help option was specified (this
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is a separate case as, normally, the program will terminate after this) or
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a positive number if there was an error during the command line parsing.
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In the latter case, the appropriate error message and usage information are
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logged by wxCmdLineParser itself using the standard wxWidgets logging
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functions.
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@section cmdlineparser_results Getting Results
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After calling Parse() (and if it returned 0), you may access the results of
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parsing using one of overloaded Found() methods.
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For a simple switch, you will simply call Found to determine if the switch
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was given or not, for an option or a parameter, you will call a version of
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Found() which also returns the associated value in the provided variable.
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All Found() functions return true if the switch or option were found in the
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command line or false if they were not specified.
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@library{wxbase}
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@category{appmanagement}
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@see wxApp::argc, wxApp::argv, @ref page_samples_console
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*/
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class wxCmdLineParser
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{
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public:
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/**
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Default constructor, you must use SetCmdLine() later.
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*/
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wxCmdLineParser();
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/**
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Constructor which specifies the command line to parse. This is the
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traditional (Unix) command line format. The parameters @a argc and
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@a argv have the same meaning as the typical @c main() function.
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This constructor is available in both ANSI and Unicode modes because under
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some platforms the command line arguments are passed as ASCII strings
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even to Unicode programs.
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*/
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wxCmdLineParser(int argc, char** argv);
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/**
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Constructor which specifies the command line to parse.
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This is the traditional (Unix) command line format.
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The parameters @a argc and @a argv have the same meaning as the typical
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@c main() function.
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This constructor is only available in Unicode build.
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*/
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wxCmdLineParser(int argc, wchar_t** argv);
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/**
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Constructor which specify the command line to parse in Windows format.
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The parameter cmdline has the same meaning as the corresponding
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parameter of @c WinMain().
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*/
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wxCmdLineParser(const wxString& cmdline);
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/**
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Specifies the @ref SetDesc() "command line description" but not the
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command line. You must use SetCmdLine() later.
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*/
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wxCmdLineParser(const wxCmdLineEntryDesc* desc);
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/**
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Specifies both the command line (in Unix format) and the
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@ref SetDesc() "command line description".
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*/
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wxCmdLineParser(const wxCmdLineEntryDesc* desc, int argc, char** argv);
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/**
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Specifies both the command line (in Windows format) and the
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@ref SetDesc() "command line description".
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*/
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wxCmdLineParser(const wxCmdLineEntryDesc* desc,
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const wxString& cmdline);
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/**
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Frees resources allocated by the object.
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@note This destructor is not virtual, don't use this class
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polymorphically.
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*/
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~wxCmdLineParser();
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/**
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Adds an option with only long form.
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This is just a convenient wrapper for AddOption() passing an empty
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string as short option name.
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@since 2.9.3
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*/
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void AddLongOption(const wxString& lng,
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const wxString& desc = wxEmptyString,
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wxCmdLineParamType type = wxCMD_LINE_VAL_STRING,
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int flags = 0);
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/**
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Adds a switch with only long form.
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This is just a convenient wrapper for AddSwitch() passing an empty
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string as short switch name.
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@since 2.9.3
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*/
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void AddLongSwitch(const wxString& lng,
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const wxString& desc = wxEmptyString,
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int flags = 0);
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/**
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Add an option @a name with an optional long name @a lng (no long name
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if it is empty, which is default) taking a value of the given type
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(string by default) to the command line description.
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*/
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void AddOption(const wxString& name,
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const wxString& lng = wxEmptyString,
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const wxString& desc = wxEmptyString,
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wxCmdLineParamType type = wxCMD_LINE_VAL_STRING,
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int flags = 0);
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/**
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Add a parameter of the given @a type to the command line description.
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*/
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void AddParam(const wxString& desc = wxEmptyString,
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wxCmdLineParamType type = wxCMD_LINE_VAL_STRING,
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int flags = 0);
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/**
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Add a switch @a name with an optional long name @a lng (no long name if
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it is empty, which is default), description @a desc and flags @a flags
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to the command line description.
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*/
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void AddSwitch(const wxString& name,
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const wxString& lng = wxEmptyString,
|
|
const wxString& desc = wxEmptyString,
|
|
int flags = 0);
|
|
|
|
/**
|
|
Add a string @a text to the command line description shown by Usage().
|
|
|
|
@since 2.9.0
|
|
*/
|
|
void AddUsageText(const wxString& text);
|
|
|
|
/**
|
|
Returns @true if long options are enabled, otherwise @false.
|
|
|
|
@see EnableLongOptions()
|
|
*/
|
|
bool AreLongOptionsEnabled() const;
|
|
|
|
/**
|
|
Breaks down the string containing the full command line in words.
|
|
|
|
Words are separated by whitespace and double quotes can be used to
|
|
preserve the spaces inside the words.
|
|
|
|
By default, this function uses Windows-like word splitting algorithm,
|
|
i.e. single quotes have no special meaning and backslash can't be used
|
|
to escape spaces either. With @c wxCMD_LINE_SPLIT_UNIX flag Unix
|
|
semantics is used, i.e. both single and double quotes can be used and
|
|
backslash can be used to escape all the other special characters.
|
|
*/
|
|
static wxArrayString
|
|
ConvertStringToArgs(const wxString& cmdline,
|
|
wxCmdLineSplitType flags = wxCMD_LINE_SPLIT_DOS);
|
|
|
|
/**
|
|
Identical to EnableLongOptions(@false).
|
|
*/
|
|
void DisableLongOptions();
|
|
|
|
/**
|
|
Enable or disable support for the long options.
|
|
|
|
As long options are not (yet) POSIX-compliant, this option allows
|
|
disabling them.
|
|
|
|
@see @ref cmdlineparser_customization and AreLongOptionsEnabled()
|
|
*/
|
|
void EnableLongOptions(bool enable = true);
|
|
|
|
/**
|
|
Returns @true if the given switch was found, @false otherwise.
|
|
*/
|
|
bool Found(const wxString& name) const;
|
|
|
|
/**
|
|
Returns whether the switch was found on the command line and whether it
|
|
was negated.
|
|
|
|
This method can be used for any kind of switch but is especially useful
|
|
for switches that can be negated, i.e. were added with
|
|
wxCMD_LINE_SWITCH_NEGATABLE flag, as otherwise Found() is simpler to
|
|
use.
|
|
|
|
However Found() doesn't allow to distinguish between switch specified
|
|
normally, i.e. without dash following it, and negated switch, i.e. with
|
|
the following dash. This method will return @c wxCMD_SWITCH_ON or @c
|
|
wxCMD_SWITCH_OFF depending on whether the switch was negated or not.
|
|
And if the switch was not found at all, @c wxCMD_SWITCH_NOT_FOUND is
|
|
returned.
|
|
|
|
@since 2.9.2
|
|
*/
|
|
wxCmdLineSwitchState FoundSwitch(const wxString& name) const;
|
|
|
|
/**
|
|
Returns true if an option taking a string value was found and stores
|
|
the value in the provided pointer (which should not be @NULL).
|
|
*/
|
|
bool Found(const wxString& name, wxString* value) const;
|
|
|
|
/**
|
|
Returns @true if an option taking an integer value was found and stores
|
|
the value in the provided pointer (which should not be @NULL).
|
|
*/
|
|
bool Found(const wxString& name, long* value) const;
|
|
|
|
/**
|
|
Returns @true if an option taking a float value was found and stores
|
|
the value in the provided pointer (which should not be @NULL).
|
|
*/
|
|
bool Found(const wxString& name, double* value) const;
|
|
|
|
/**
|
|
Returns @true if an option taking a date value was found and stores the
|
|
value in the provided pointer (which should not be @NULL).
|
|
*/
|
|
bool Found(const wxString& name, wxDateTime* value) const;
|
|
|
|
/**
|
|
Returns the value of Nth parameter (as string only).
|
|
*/
|
|
wxString GetParam(size_t n = 0) const;
|
|
|
|
/**
|
|
Returns the number of parameters found. This function makes sense
|
|
mostly if you had used @c wxCMD_LINE_PARAM_MULTIPLE flag.
|
|
*/
|
|
size_t GetParamCount() const;
|
|
|
|
/**
|
|
Returns the collection of arguments
|
|
|
|
@note The returned object just refers to the command line parser. The
|
|
command line parser must live longer than it.
|
|
|
|
@see wxCmdLineArgs
|
|
@since 3.1.0
|
|
*/
|
|
wxCmdLineArgs GetArguments() const;
|
|
|
|
/**
|
|
Parse the command line, return 0 if ok, -1 if @c "-h" or @c "\--help"
|
|
option was encountered and the help message was given or a positive
|
|
value if a syntax error occurred.
|
|
|
|
@param giveUsage
|
|
If @true (default), the usage message is given if a syntax error
|
|
was encountered while parsing the command line or if help was
|
|
requested. If @false, only error messages about possible syntax
|
|
errors are given, use Usage to show the usage message from the
|
|
caller if needed.
|
|
*/
|
|
int Parse(bool giveUsage = true);
|
|
|
|
///@{
|
|
/**
|
|
Set the command line to parse after using one of the constructors which
|
|
don't do it.
|
|
*/
|
|
void SetCmdLine(int argc, char** argv);
|
|
void SetCmdLine(int argc, wchar_t** argv);
|
|
void SetCmdLine(const wxString& cmdline);
|
|
///@}
|
|
|
|
/**
|
|
Constructs the command line description.
|
|
|
|
Take the command line description from the wxCMD_LINE_NONE terminated
|
|
table.
|
|
|
|
Example of usage:
|
|
|
|
@code
|
|
static const wxCmdLineEntryDesc cmdLineDesc[] =
|
|
{
|
|
{ wxCMD_LINE_SWITCH, "v", "verbose", "be verbose" },
|
|
{ wxCMD_LINE_SWITCH, "q", "quiet", "be quiet" },
|
|
|
|
{ wxCMD_LINE_OPTION, "o", "output", "output file" },
|
|
{ wxCMD_LINE_OPTION, "i", "input", "input dir" },
|
|
{ wxCMD_LINE_OPTION, "s", "size", "output block size", wxCMD_LINE_VAL_NUMBER },
|
|
{ wxCMD_LINE_OPTION, "d", "date", "output file date", wxCMD_LINE_VAL_DATE },
|
|
|
|
{ wxCMD_LINE_PARAM, NULL, NULL, "input file", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_MULTIPLE },
|
|
|
|
{ wxCMD_LINE_NONE }
|
|
};
|
|
|
|
wxCmdLineParser parser;
|
|
|
|
parser.SetDesc(cmdLineDesc);
|
|
@endcode
|
|
*/
|
|
void SetDesc(const wxCmdLineEntryDesc* desc);
|
|
|
|
/**
|
|
The @a logo is some extra text which will be shown by Usage() method.
|
|
*/
|
|
void SetLogo(const wxString& logo);
|
|
|
|
/**
|
|
@a switchChars contains all characters with which an option or switch
|
|
may start. Default is @c "-" for Unix, @c "-/" for Windows.
|
|
*/
|
|
void SetSwitchChars(const wxString& switchChars);
|
|
|
|
/**
|
|
Give the standard usage message describing all program options. It will
|
|
use the options and parameters descriptions specified earlier, so the
|
|
resulting message will not be helpful to the user unless the
|
|
descriptions were indeed specified.
|
|
|
|
@see SetLogo()
|
|
*/
|
|
void Usage() const;
|
|
|
|
/**
|
|
Return the string containing the program usage description.
|
|
|
|
Call Usage() to directly show this string to the user.
|
|
*/
|
|
wxString GetUsageString() const;
|
|
};
|
|
|