C++ Property::Get_help方法代码示例

bool Config::PrintConfig(char const * const configfilename,bool everything) const {
	char temp[50];char helpline[256];
	FILE* outfile=fopen(configfilename,"w+t");
	if(outfile==NULL) return false;

	/* Print start of configfile and add an return to improve readibility. */
	fprintf(outfile,MSG_Get("CONFIGFILE_INTRO"),VERSION);
	fprintf(outfile,"\n");
	for (const_it tel=sectionlist.begin(); tel!=sectionlist.end(); tel++){
		/* Print out the Section header */
		Section_prop *sec = dynamic_cast<Section_prop *>(*tel);
		strcpy(temp,(*tel)->GetName());
		lowcase(temp);

		if (sec) {
			int mods=0;
			Property *p;
			size_t i = 0, maxwidth = 0;
			while ((p = sec->Get_prop(i++))) {
				if (!everything && !p->modified()) continue;

				size_t w = strlen(p->propname.c_str());
				if (w > maxwidth) maxwidth = w;
				mods++;
			}

			if (!everything && mods == 0) {
				/* nothing to print */
				continue;
			}

			fprintf(outfile,"[%s]\n",temp);

			i=0;
			char prefix[80];
			snprintf(prefix,80, "\n# %*s  ", (int)maxwidth, "");
			while ((p = sec->Get_prop(i++))) {
				if (!everything && !p->modified()) continue;

				std::string help = p->Get_help();
				std::string::size_type pos = std::string::npos;
				while ((pos = help.find("\n", pos+1)) != std::string::npos) {
					help.replace(pos, 1, prefix);
				}

				std::vector<Value> values = p->GetValues();

				if (help != "" || !values.empty()) {
					fprintf(outfile, "# %*s: %s", (int)maxwidth, p->propname.c_str(), help.c_str());

					if (!values.empty()) {
						fprintf(outfile, "%s%s:", prefix, MSG_Get("CONFIG_SUGGESTED_VALUES"));
						std::vector<Value>::iterator it = values.begin();
						while (it != values.end()) {
							if((*it).ToString() != "%u") { //Hack hack hack. else we need to modify GetValues, but that one is const...
								if (it != values.begin()) fputs(",", outfile);
								fprintf(outfile, " %s", (*it).ToString().c_str());
							}
							++it;
						}
						fprintf(outfile,".");
					}
					fprintf(outfile, "\n");
				}
			}
		} else {
			fprintf(outfile,"[%s]\n",temp);

			upcase(temp);
			strcat(temp,"_CONFIGFILE_HELP");
			const char * helpstr=MSG_Get(temp);
			char * helpwrite=helpline;
			while (*helpstr) {
				*helpwrite++=*helpstr;
				if (*helpstr == '\n') {
					*helpwrite=0;
					fprintf(outfile,"# %s",helpline);
					helpwrite=helpline;
				}
				helpstr++;
			}
		}
	   
		(*tel)->PrintData(outfile,everything);
		fprintf(outfile,"\n");		/* Always an empty line between sections */
	}
	fclose(outfile);
	return true;
}

//.........这里部分代码省略.........
				while (true) {
					Property *p = psec->Get_prop(i++);
					if (p==NULL) break;
					if (!strcasecmp(p->propname.c_str(),pvars[1].c_str())) {
						// found it; make the list of possible values
						std::string propvalues;
						std::vector<Value> pv = p->GetValues();
						
						if (p->Get_type()==Value::V_BOOL) {
							// possible values for boolean are true, false
							propvalues += "true, false";
						} else if (p->Get_type()==Value::V_INT) {
							// print min, max for integer values if used
							Prop_int* pint = dynamic_cast <Prop_int*>(p);
							if (pint==NULL) E_Exit("Int property dynamic cast failed.");
							if (pint->getMin() != pint->getMax()) {
								std::ostringstream oss;
								oss << pint->getMin();
								oss << "..";
								oss << pint->getMax();
								propvalues += oss.str();
							}
						}
						for(Bitu k = 0; k < pv.size(); k++) {
							if (pv[k].ToString() =="%u")
								propvalues += MSG_Get("PROGRAM_CONFIG_HLP_POSINT");
							else propvalues += pv[k].ToString();
							if ((k+1) < pv.size()) propvalues += ", ";
						}

						WriteOut(MSG_Get("PROGRAM_CONFIG_HLP_PROPHLP"),
							p->propname.c_str(),
							sec->GetName(),
							p->Get_help(),propvalues.c_str(),
							p->Get_Default_Value().ToString().c_str(),
							p->GetValue().ToString().c_str());
						// print 'changability'
						if (p->getChange()==Property::Changeable::OnlyAtStart) {
							WriteOut(MSG_Get("PROGRAM_CONFIG_HLP_NOCHANGE"));
						}
						return;
					}
				}
				break;
			}
			return;
		}
		case P_AUTOEXEC_CLEAR: {
			Section_line* sec = dynamic_cast <Section_line*>
				(control->GetSection(std::string("autoexec")));
			sec->data.clear();
			break;
		}
		case P_AUTOEXEC_ADD: {
			if (pvars.size() == 0) {
				WriteOut(MSG_Get("PROGRAM_CONFIG_MISSINGPARAM"));
				return;
			}
			Section_line* sec = dynamic_cast <Section_line*>
				(control->GetSection(std::string("autoexec")));

			for(Bitu i = 0; i < pvars.size(); i++) sec->HandleInputline(pvars[i]);
			break;
		}
		case P_AUTOEXEC_TYPE: {
			Section_line* sec = dynamic_cast <Section_line*>