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Diffstat (limited to 'apt-pkg/contrib/cmndline.h')
-rw-r--r-- | apt-pkg/contrib/cmndline.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/apt-pkg/contrib/cmndline.h b/apt-pkg/contrib/cmndline.h new file mode 100644 index 0000000..bdd4f6e --- /dev/null +++ b/apt-pkg/contrib/cmndline.h @@ -0,0 +1,118 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + Command Line Class - Sophisticated command line parser + + This class provides a unified command line parser/option handliner/ + configuration mechanism. It allows the caller to specify the option + set and map the option set into the configuration class or other + special functioning. + + Filenames are stripped from the option stream and put into their + own array. + + The argument descriptor array can be initialized as: + + CommandLine::Args Args[] = + {{'q',"quiet","apt::get::quiet",CommandLine::IntLevel}, + {0,0,0,0}}; + + The flags mean, + HasArg - Means the argument has a value + IntLevel - Means the argument is an integer level indication, the + following -qqqq (+3) -q5 (=5) -q=5 (=5) are valid + Boolean - Means it is true/false or yes/no. + -d (true) --no-d (false) --yes-d (true) + --long (true) --no-long (false) --yes-long (true) + -d=yes (true) -d=no (false) Words like enable, disable, + true false, yes no and on off are recognized in logical + places. + InvBoolean - Same as boolean but the case with no specified sense + (first case) is set to false. + ConfigFile - Means this flag should be interprited as the name of + a config file to read in at this point in option processing. + Implies HasArg. + ArbItem - Means the item is an arbitrary configuration string of + the form item=value, where item is passed directly + to the configuration class. + The default, if the flags are 0 is to use Boolean + + ##################################################################### */ + /*}}}*/ +#ifndef PKGLIB_CMNDLINE_H +#define PKGLIB_CMNDLINE_H + +#include <apt-pkg/macros.h> + +#ifndef APT_8_CLEANER_HEADERS +#include <apt-pkg/configuration.h> +#endif + +class Configuration; + +class CommandLine +{ + public: + struct Args; + struct Dispatch; + struct DispatchWithHelp; + + protected: + + Args *ArgList; + Configuration *Conf; + bool HandleOpt(int &I,int argc,const char *argv[], + const char *&Opt,Args *A,bool PreceedeMatch = false); + void static SaveInConfig(unsigned int const &argc, char const * const * const argv); + + public: + + enum AFlags + { + HasArg = (1 << 0), + IntLevel = (1 << 1), + Boolean = (1 << 2), + InvBoolean = (1 << 3), + ConfigFile = (1 << 4) | HasArg, + ArbItem = (1 << 5) | HasArg + }; + + const char **FileList; + + bool Parse(int argc,const char **argv); + void ShowHelp(); + unsigned int FileSize() const APT_PURE; + // FIXME: merge on next ABI break + bool DispatchArg(Dispatch *List,bool NoMatch = true); + bool DispatchArg(Dispatch const * const List,bool NoMatch = true); + + static char const * GetCommand(Dispatch const * const Map, + unsigned int const argc, char const * const * const argv) APT_PURE; + + static CommandLine::Args MakeArgs(char ShortOpt, char const *LongOpt, + char const *ConfName, unsigned long Flags) APT_PURE; + + CommandLine(); + CommandLine(Args *AList,Configuration *Conf); + ~CommandLine(); +}; + +struct CommandLine::Args +{ + char ShortOpt; + const char *LongOpt; + const char *ConfName; + unsigned long Flags; + + inline bool end() {return ShortOpt == 0 && LongOpt == 0;}; + inline bool IsBoolean() {return Flags == 0 || (Flags & (Boolean|InvBoolean)) != 0;}; +}; + +struct CommandLine::Dispatch +{ + const char *Match; + bool (*Handler)(CommandLine &); +}; + +#endif |