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ローマ字入力を平仮名に変換する

Last updated at Posted at 2019-09-22

改良中。。。
覚書としてのこします。

main.cpp
#include <iostream>
#include <string>
#include <map>
#include <vector>
#include <algorithm>
#include <stdio.h>
#include <cstdlib>

const std::vector<std::uint8_t> sDictionary1 = {
	' ','k','s','t','n','h','m','y','r','w','g','z','d','b','p','f'
};

const std::vector<std::uint8_t> sDictionary2 = {
	'a','i','u','e','o' 
};

const std::vector<std::string> sDictionary3 = {
	"あ", "い", "う", "え", "お",
	"か", "き", "く", "け", "こ",
	"さ", "し", "す", "せ", "そ",
	"た", "ち", "つ", "て", "と",
	"な", "に", "ぬ", "ね", "の",
	"は", "ひ", "ふ", "へ", "ほ",
	"ま", "み", "む", "め", "も",
	"や", "  ", "ゆ", "  ", "よ",
	"ら", "り", "る", "れ", "ろ",
	"わ", "  ", "を", "  ", "ん",
	"が", "ぎ", "ぐ", "げ", "ご",
	"ざ", "じ", "ず", "ぜ", "ぞ",
	"だ", "ぢ", "づ", "で", "ど",
	"ば", "び", "ぶ", "べ", "ぼ",
	"ぱ", "ぴ", "ぷ", "ぺ", "ぽ",
	"ふぁ", "ふぃ", "ふ", "ふぇ", "ふぉ", 
};

const std::vector<std::string> sDictionary4 = {
	"あ", "い", "う", "え", "お",
	"きゃ", "きぃ", "きゅ", "きぇ", "きょ",
	"しゃ", "しぃ", "しゅ", "しぇ", "しょ",
	"ちゃ", "ちぃ", "ちゅ", "ちぇ", "ちょ",
	"にゃ", "にぃ", "にゅ", "にぇ", "にょ",
	"ひゃ", "ひぃ", "ひゅ", "ひぇ", "ひょ",
	"みゃ", "みぃ", "みゅ", "みぇ", "みょ",
	"や", "  ", "ゆ", "  ", "よ",
	"りゃ", "りぃ", "りゅ", "りぇ", "りょ",
	"わ", "うぃ", "うぅ", "うぇ ", "を",
	"ぎゃ", "ぎぃ", "ぎゅ", "ぎぇ", "ぎょ",
	"じゃ", "じぃ", "じゅ", "じぇ", "じょ",
	"ぢゃ", "ぢぃ", "ぢゅ", "ぢぇ", "ぢょ",
	"びゃ", "びぃ", "びゅ", "びぇ", "びょ",
	"ぴゃ", "ぴぃ", "ぴゅ", "ぴぇ", "ぴょ",
	"ふぁ", "ふぃ", "ふ", "ふぇ", "ふぉ",
};

int main()
{
	std::string aInput;
	std::cout << "アルファベットを入力する:" << std::endl;
	std::cin >> aInput;

	// 文字サイズ
	auto aSize = aInput.size();

	// アルファベット判定
	for (auto i = 0u; i < aSize; ++i) {
		if ((aInput[i] >= 0x41) && (aInput[i] <= 0x5A)) {
			aInput[i] += 0x20; // 大文字→小文字
		}
		else if ((aInput[i] >= 0x61) && (aInput[i] <= 0x7A)) {
			// Do Nothing;
		}
		else {
			std::cout << "Not Alphabet!!" << std::endl;
			std::exit(1);
		}
	}

	std::string aOutput;

	auto aPoss = aInput.begin();
	auto aEndPoss = aInput.end();

	do {
		auto aIndexItr = std::find(sDictionary1.begin(), sDictionary1.end(), *aPoss);
		auto aOyaIndex = 0u;
		if (aIndexItr != sDictionary1.end()) {
			aOyaIndex = aIndexItr - sDictionary1.begin(); // 1文字目が子音だった場合

			if (*aPoss == *(aPoss + 1)) {
				aOutput += "っ";
				++aPoss;
			}
			++aPoss;
		}

		auto aFlag = false;
		if (*aPoss == 'y') {
			aFlag = true;
			++aPoss;
		}

		// 1文字目が母音だった場合
		auto aTempIndexItr = std::find(sDictionary2.begin(), sDictionary2.end(), *aPoss);
		auto aKodomoIndex = 0u;
		if (aTempIndexItr != sDictionary2.end()) {
			aKodomoIndex = aTempIndexItr - sDictionary2.begin(); // 1文字目が子音だった場合
		}

		auto aTable = aFlag ? sDictionary4 : sDictionary3;
		aOutput += aTable.at(aOyaIndex * 5 + aKodomoIndex);
		++aPoss;
	}
	while (aPoss != aEndPoss);

	std::cout << aOutput << std::endl;

    return 0;
}
void foo(const char* iStr, std::weak_ptr<std::ostream> oPtr)
{
	// wpの監視対象であるspが、有効なリソースを保持している状態なら処理する。
	if (std::shared_ptr<std::ostream> r = oPtr.lock()) {
		*r << iStr << std::endl;
	}
}
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