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gpertea |
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/* |
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** |
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GArgs is a quick'n'dirty object oriented replacement for the standard |
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getopts library call avialable on many unix platforms. |
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it accepts dash style options and = style options |
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-<letter>[ ][<value>] |
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<string>=<value> |
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*/ |
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#ifndef G_ARGS_DEFINED |
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#define G_ARGS_DEFINED |
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class GArgs { |
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//structure for parsing arguments format definition |
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struct fmtdef { |
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int type; // 0=dashed switch, 1=dashed value, 2='=' value |
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char* opt; //switch/opt char/string |
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}; |
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int fmtcount; |
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fmtdef* fmt; //this will store format definition after parsing it |
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struct argdata { |
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char* opt; // this is NULL for non-dashed arguments |
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//one character for dashed style arguments |
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//one string for = style arguments |
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char* value; // is NULL for switches (dashed flags) |
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}; |
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argdata* args; //arguments table after parsing it |
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int count; //total count of elements in 'args' array |
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int nonOptCount; //count of non-dashed, non= arguments |
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int nonOptPos; //current position for nonOpt arguments iterator |
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int optPos; //current position for options iterator |
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int errarg; //argv error position after parsing |
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static const char* is_opt; // = non NULL just for getOpt easy testing |
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int validOpt(char o); //parsing helper function |
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int validOpt(char* o); |
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public: |
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GArgs(int argc, char* const argv[], const char* format, bool nodigitopts=false); |
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/* format is: |
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<letter>[:] for e.g. p:hT <= -p testing -ptesting -h -T |
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<string>= for e.g. PID=S= <= PID=50 S=3.5 |
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This means that the = options, if present, must NEVER be given after |
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dashed (non-value) switches directly |
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*/ |
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~GArgs(); |
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int isError(); // returns the offending argv position or 0 if no error |
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int getCount() { return count; } |
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int getFmtCount() { return fmtcount; } |
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int getNonOptCount() { return nonOptCount; } |
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char* getOpt(const char* o); /* retrieve the value for option o |
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returns |
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NULL if option not given at all |
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!=NULL if boolean option was given |
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opt's value if value option was given |
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*/ |
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char* getOpt(const char o); |
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int startOpt(); //init iteration through option arguments |
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char* nextOpt(); //get next option argument |
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int startNonOpt(); //init iteration through non-option arguments |
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//returns the number of non-option arguments |
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char* nextNonOpt(); //get the next non-option argument |
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}; |
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#endif |
