?? getoptns.cc
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#include <strstream.h>#include <iomanip.h>#include <ctype.h>#include <string.h>#include "basetype.h"#include "getoptns.h"#include "mesgtext.h"// many of the get and extract methods should be a template// but can't figure out how to have template functions declared within// a classboolGetNamedOptions::match(const char *arg,const char *index){ return (arg && arg[0] == '-' && index && ((arg[1] == 0 && index[0] == 0) // "-" || strcmp(arg+1,index) == 0));}boolGetNamedOptions::extract(const char *index,const char * src,long &dst){ istrstream istr(src); istr >> resetiosflags(ios::basefield) // force adaptive >> dst; if (istr.good()) return true; else { errorstream << "-" << index << ": " << EMsgDC(ArgumentNotInteger) << endl; good_flag=false; return false; }}#define GENERATE_EXTRACT_INDEX_INTEGER(T) \bool \GetNamedOptions::extract(const char *index,const char * src,T &dst) \{ \ long l; \ if (extract(index,src,l)) { \ dst=(T)l; \ return true; \ } \ else \ return false; \}GENERATE_EXTRACT_INDEX_INTEGER(unsigned long)GENERATE_EXTRACT_INDEX_INTEGER(unsigned int)GENERATE_EXTRACT_INDEX_INTEGER(int)boolGetNamedOptions::extract(const char *index,const char * src,double &dst){ istrstream istr(src); istr >> dst; if (istr.good() // fudge because fails if no trailing f or d :( || (isdigit(*src) && isdigit(src[strlen(src)-1])) ) return true; else { errorstream << "-" << index << ": " << EMsgDC(ArgumentNotFloat) << endl; good_flag=false; return false; }}boolGetNamedOptions::extract(const char *index,const char * src,float &dst){ double d; if (extract(index,src,d)) { dst=(float)d; return true; } else return false;}boolGetNamedOptions::extract(const char *index,const char * src,const char * &dst){ (void)good_flag; (void)errorstream; (void)index; dst=src; return true;}intGetNamedOptions::findUnusedOption(void){ int i; for (i=0; i<argc_start; ++i) { if (!argv_used[i] && argv_start[i] && argv_start[i][0] == '-') return i; } return -1;}intGetNamedOptions::findUnusedOption(const char *index){ if (!index) return -1; int i; for (i=0; i<argc_start; ++i) { if (!argv_used[i] && match(argv_start[i],index)) return i; } return -1;}intGetNamedOptions::findUnusedOption(const char *const *indexes,int& which){ which=-1; int found=-1; int iw=0; int count=0; while (*indexes) { int i=findUnusedOption(*indexes); if (i != -1) { found=i; which=iw; ++count; if (count > 1) { errorstream << "-" << *indexes << ": " << EMsgDC(OptionRepeated) << endl; } } ++indexes; ++iw; } return found;}intGetNamedOptions::findUnusedValue(int n){ int i; for (i=0; i<argc_start; ++i) { if (!argv_used[i]) { if (n == 0) return i; --n; } } return -1;}voidGetNamedOptions::firstValue(void){}intGetNamedOptions::areMoreValues(void){ int i=0; while (findUnusedValue(i) != -1) ++i; return i;}voidGetNamedOptions::bumpValue(void){ int i=findUnusedValue(0); if (i != -1) argv_used[i]=true;}const char *GetNamedOptions::value(int n){ int i=findUnusedValue(n); return (i == -1) ? 0 : argv_start[i];}GetNamedOptions::GetNamedOptions(int argc,const char *const *argv) : ErrorsInClass(){ command_string=argv[0]; argv_start=argv+1; argc_left=argc_start=argc-1; argv_used=argc_start ? new bool[argc_start] : 0; if (argc_start && !argv_used) good_flag=false; else { int i; for (i=0; i<argc_start; ++i) argv_used[i]=false; }}GetNamedOptions::~GetNamedOptions(){ if (argv_used) delete[] argv_used;}boolGetNamedOptions::get(const char *index){ int i=findUnusedOption(index); if (i != -1) { argv_used[i]=true; return true; } else return false;}boolGetNamedOptions::operator[](const char *index){ return get(index);}boolGetNamedOptions::get(const char *const *indexes){ int which; int i=findUnusedOption(indexes,which); if (i != -1) { argv_used[i]=true; return true; } else return false;}boolGetNamedOptions::operator[](const char *const *indexes){ return get(indexes);}boolGetNamedOptions::get(const char *index,const char * &value){ int i=findUnusedOption(index); if (i == -1) return false; argv_used[i]=true; if (i+1 >= argc_start || argv_used[i+1] || argv_start[i+1] == 0 || argv_start[i+1][0] == 0 || argv_start[i+1][0] == '-') { errorstream << "-" << index << ": " << EMsgDC(ArgumentMissing) << endl; good_flag=false; return false; } argv_used[i+1]=true; value=argv_start[i+1]; return true;}#define GENERATE_GET_ONE_ARGUMENT(T) \bool \GetNamedOptions::get(const char *index,T &value) \{ \ const char *s; \ bool rv; \ if (!get(index,s)) \ rv=false; \ else \ rv=extract(index,s,value); \ return rv; \}GENERATE_GET_ONE_ARGUMENT(int)GENERATE_GET_ONE_ARGUMENT(unsigned int)GENERATE_GET_ONE_ARGUMENT(unsigned long)GENERATE_GET_ONE_ARGUMENT(long)GENERATE_GET_ONE_ARGUMENT(float)GENERATE_GET_ONE_ARGUMENT(double)boolGetNamedOptions::get(const char *const *indexes,const char * &value,int& which){ int found=findUnusedOption(indexes,which); if (found == -1) return false; argv_used[found]=true; if (found+1 >= argc_start || argv_used[found+1] || argv_start[found+1] == 0 || argv_start[found+1][0] == 0 || argv_start[found+1][0] == '-') { errorstream << "-" << indexes[which] << ": " << EMsgDC(ArgumentMissing) << endl; good_flag=false; return false; } argv_used[found+1]=true; value=argv_start[found+1]; return true;}#define GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(T) \bool \GetNamedOptions::get(const char *const *indexes,T &value) \{ \ const char *s; \ bool rv; \ int which; \ if (!get(indexes,s,which)) \ rv=false; \ else \ rv=extract(indexes[which],s,value); \ return rv; \}GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(int)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(unsigned int)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(unsigned long)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(long)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(float)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(double)GENERATE_GET_ONE_ARGUMENT_FROM_MULTIPLE_OPTIONS(const char *)#define GENERATE_GET_MULTIPLE_ARGUMENTS(T) \int \GetNamedOptions::get(const char *index,T *ptr,int num) \{ \ int i=findUnusedOption(index); \ int n=-1; \ if (i != -1) { \ argv_used[i]=true; \ ++i; \ for (n=0; n < num && i+n < argc_start \ && !argv_used[i+n] \ && argv_start[i+n] \ && argv_start[i+n][0] \ && argv_start[i+n][0] != '-' \ ; ++n) { \ argv_used[i+n]=true; \ (void)extract( \ index,argv_start[i+n],ptr[n]); \ } \ } \ return n; \}GENERATE_GET_MULTIPLE_ARGUMENTS(unsigned int)GENERATE_GET_MULTIPLE_ARGUMENTS(int)GENERATE_GET_MULTIPLE_ARGUMENTS(unsigned long)GENERATE_GET_MULTIPLE_ARGUMENTS(long)GENERATE_GET_MULTIPLE_ARGUMENTS(float)GENERATE_GET_MULTIPLE_ARGUMENTS(double)GENERATE_GET_MULTIPLE_ARGUMENTS(const char *)#define GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(T) \int \GetNamedOptions::get(const char *const *indexes,T *ptr,int num) \{ \ int which; \ int i=findUnusedOption(indexes,which); \ int n=-1; \ if (i != -1) { \ argv_used[i]=true; \ ++i; \ for (n=0; n < num && i+n < argc_start \ && !argv_used[i+n] \ && argv_start[i+n] \ && argv_start[i+n][0] \ && argv_start[i+n][0] != '-' \ ; ++n) { \ argv_used[i+n]=true; \ (void)extract( \ indexes[which], \ argv_start[i+n],ptr[n]); \ } \ } \ return n; \}GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(unsigned int)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(int)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(unsigned long)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(long)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(float)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(double)GENERATE_GET_MULTIPLE_ARGUMENT_FROM_MULTIPLE_OPTIONS(const char *)intGetNamedOptions::operator!(){ return areMoreValues();}voidGetNamedOptions::operator++(){ bumpValue();}voidGetNamedOptions::operator++(int){ bumpValue();}const char *GetNamedOptions::operator()(){ return value(0);}const char *GetNamedOptions::operator[](int num){ return value(num);}voidGetNamedOptions::done(void){ int i; while ((i=findUnusedOption()) != -1) { good_flag=false; errorstream << argv_start[i] << ": unrecognized option" << endl; argv_used[i]=true; }}const char *GetNamedOptions::command(void) const{ return command_string;}?? 快捷鍵說明
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