feat: add pig-latin exercise

config.json

@@ -1168,6 +1168,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 5
+      },
+      {
+        "slug": "pig-latin",
+        "name": "Pig Latin",
+        "uuid": "e4242a6e-3611-4f49-890b-368f1ebbdc94",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 4
       }
     ],
     "foregone": [

exercises/practice/pig-latin/.docs/instructions.md

@@ -0,0 +1,20 @@
+# Instructions
+
+Implement a program that translates from English to Pig Latin.
+
+Pig Latin is a made-up children's language that's intended to be confusing.
+It obeys a few simple rules (below), but when it's spoken quickly it's really difficult for non-children (and non-native speakers) to understand.
+
+- **Rule 1**: If a word begins with a vowel sound, add an "ay" sound to the end of the word.
+  Please note that "xr" and "yt" at the beginning of a word make vowel sounds (e.g. "xray" -> "xrayay", "yttria" -> "yttriaay").
+- **Rule 2**: If a word begins with a consonant sound, move it to the end of the word and then add an "ay" sound to the end of the word.
+  Consonant sounds can be made up of multiple consonants, such as the "ch" in "chair" or "st" in "stand" (e.g. "chair" -> "airchay").
+- **Rule 3**: If a word starts with a consonant sound followed by "qu", move it to the end of the word, and then add an "ay" sound to the end of the word (e.g. "square" -> "aresquay").
+- **Rule 4**: If a word contains a "y" after a consonant cluster or as the second letter in a two letter word it makes a vowel sound (e.g. "rhythm" -> "ythmrhay", "my" -> "ymay").
+
+There are a few more rules for edge cases, and there are regional variants too.
+Check the tests for all the details.
+
+Read more about [Pig Latin on Wikipedia][pig-latin].
+
+[pig-latin]: https://en.wikipedia.org/wiki/Pig_latin

exercises/practice/pig-latin/.meta/config.json

@@ -0,0 +1,21 @@
+{
+  "authors": [
+    "vaeng"
+  ],
+  "files": {
+    "solution": [
+      "pig_latin.cpp",
+      "pig_latin.h"
+    ],
+    "test": [
+      "pig_latin_test.cpp"
+    ],
+    "example": [
+      ".meta/example.cpp",
+      ".meta/example.h"
+    ]
+  },
+  "blurb": "Implement a program that translates from English to Pig Latin.",
+  "source": "The Pig Latin exercise at Test First Teaching by Ultrasaurus",
+  "source_url": "https://github.com/ultrasaurus/test-first-teaching/blob/master/learn_ruby/pig_latin/"
+}

exercises/practice/pig-latin/.meta/example.cpp

@@ -0,0 +1,28 @@
+#include "pig_latin.h"
+
+namespace pig_latin {
+std::string translate_word(const std::string& word) {
+    for (const std::string start : {"a", "e", "i", "o", "u", "yt", "xr"}) {
+        if (word.substr(0, start.size()) == start) return word + "ay";
+    }
+    for (const std::string start : {"thr", "sch", "squ", "ch", "qu", "th", "rh"}) {
+        if (word.substr(0, start.size()) == start)
+            return word.substr(start.size()) + start + "ay";
+    }
+    return word.substr(1) + word.front() + "ay";
+}
+
+std::string translate(const std::string& phrase) {
+    size_t start = 0;
+    std::string translation{};
+    for (size_t found = phrase.find(' '); found != std::string::npos;
+         found = phrase.find(' ', start)) {
+        translation += translate_word(phrase.substr(start, found - start)) + " ";
+        start = found + 1;
+    }
+    if (start != phrase.size())
+        translation += translate_word(phrase.substr(start));
+
+    return translation;
+}
+}  // namespace pig_latin

exercises/practice/pig-latin/.meta/example.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <string>
+#include <string_view>
+
+namespace pig_latin {
+std::string translate(const std::string& phrase);
+
+}  // namespace pig_latin

exercises/practice/pig-latin/.meta/tests.toml

@@ -0,0 +1,76 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[11567f84-e8c6-4918-aedb-435f0b73db57]
+description = "ay is added to words that start with vowels -> word beginning with a"
+
+[f623f581-bc59-4f45-9032-90c3ca9d2d90]
+description = "ay is added to words that start with vowels -> word beginning with e"
+
+[7dcb08b3-23a6-4e8a-b9aa-d4e859450d58]
+description = "ay is added to words that start with vowels -> word beginning with i"
+
+[0e5c3bff-266d-41c8-909f-364e4d16e09c]
+description = "ay is added to words that start with vowels -> word beginning with o"
+
+[614ba363-ca3c-4e96-ab09-c7320799723c]
+description = "ay is added to words that start with vowels -> word beginning with u"
+
+[bf2538c6-69eb-4fa7-a494-5a3fec911326]
+description = "ay is added to words that start with vowels -> word beginning with a vowel and followed by a qu"
+
+[e5be8a01-2d8a-45eb-abb4-3fcc9582a303]
+description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with p"
+
+[d36d1e13-a7ed-464d-a282-8820cb2261ce]
+description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with k"
+
+[d838b56f-0a89-4c90-b326-f16ff4e1dddc]
+description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with x"
+
+[bce94a7a-a94e-4e2b-80f4-b2bb02e40f71]
+description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with q without a following u"
+
+[c01e049a-e3e2-451c-bf8e-e2abb7e438b8]
+description = "some letter clusters are treated like a single consonant -> word beginning with ch"
+
+[9ba1669e-c43f-4b93-837a-cfc731fd1425]
+description = "some letter clusters are treated like a single consonant -> word beginning with qu"
+
+[92e82277-d5e4-43d7-8dd3-3a3b316c41f7]
+description = "some letter clusters are treated like a single consonant -> word beginning with qu and a preceding consonant"
+
+[79ae4248-3499-4d5b-af46-5cb05fa073ac]
+description = "some letter clusters are treated like a single consonant -> word beginning with th"
+
+[e0b3ae65-f508-4de3-8999-19c2f8e243e1]
+description = "some letter clusters are treated like a single consonant -> word beginning with thr"
+
+[20bc19f9-5a35-4341-9d69-1627d6ee6b43]
+description = "some letter clusters are treated like a single consonant -> word beginning with sch"
+
+[54b796cb-613d-4509-8c82-8fbf8fc0af9e]
+description = "some letter clusters are treated like a single vowel -> word beginning with yt"
+
+[8c37c5e1-872e-4630-ba6e-d20a959b67f6]
+description = "some letter clusters are treated like a single vowel -> word beginning with xr"
+
+[a4a36d33-96f3-422c-a233-d4021460ff00]
+description = "position of y in a word determines if it is a consonant or a vowel -> y is treated like a consonant at the beginning of a word"
+
+[adc90017-1a12-4100-b595-e346105042c7]
+description = "position of y in a word determines if it is a consonant or a vowel -> y is treated like a vowel at the end of a consonant cluster"
+
+[29b4ca3d-efe5-4a95-9a54-8467f2e5e59a]
+description = "position of y in a word determines if it is a consonant or a vowel -> y as second letter in two letter word"
+
+[44616581-5ce3-4a81-82d0-40c7ab13d2cf]
+description = "phrases are translated -> a whole phrase"

exercises/practice/pig-latin/CMakeLists.txt

@@ -0,0 +1,64 @@
+# Get the exercise name from the current directory
+get_filename_component(exercise ${CMAKE_CURRENT_SOURCE_DIR} NAME)
+
+# Basic CMake project
+cmake_minimum_required(VERSION 3.5.1)
+
+# Name the project after the exercise
+project(${exercise} CXX)
+
+# Get a source filename from the exercise name by replacing -'s with _'s
+string(REPLACE "-" "_" file ${exercise})
+
+# Implementation could be only a header
+if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${file}.cpp)
+    set(exercise_cpp ${file}.cpp)
+else()
+    set(exercise_cpp "")
+endif()
+
+# Use the common Catch library?
+if(EXERCISM_COMMON_CATCH)
+    # For Exercism track development only
+    add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h $<TARGET_OBJECTS:catchlib>)
+elseif(EXERCISM_TEST_SUITE)
+    # The Exercism test suite is being run, the Docker image already
+    # includes a pre-built version of Catch.
+    find_package(Catch2 REQUIRED)
+    add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h)
+    target_link_libraries(${exercise} PRIVATE Catch2::Catch2WithMain)
+    # When Catch is installed system wide we need to include a different
+    # header, we need this define to use the correct one.
+    target_compile_definitions(${exercise} PRIVATE EXERCISM_TEST_SUITE)
+else()
+    # Build executable from sources and headers
+    add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h test/tests-main.cpp)
+endif()
+
+set_target_properties(${exercise} PROPERTIES
+    CXX_STANDARD 17
+    CXX_STANDARD_REQUIRED OFF
+    CXX_EXTENSIONS OFF
+)
+
+set(CMAKE_BUILD_TYPE Debug)
+
+if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(GNU|Clang)")
+    set_target_properties(${exercise} PROPERTIES
+        COMPILE_FLAGS "-Wall -Wextra -Wpedantic -Werror"
+    )
+endif()
+
+# Configure to run all the tests?
+if(${EXERCISM_RUN_ALL_TESTS})
+    target_compile_definitions(${exercise} PRIVATE EXERCISM_RUN_ALL_TESTS)
+endif()
+
+# Tell MSVC not to warn us about unchecked iterators in debug builds
+if(${MSVC})
+    set_target_properties(${exercise} PROPERTIES
+        COMPILE_DEFINITIONS_DEBUG _SCL_SECURE_NO_WARNINGS)
+endif()
+
+# Run the tests on every build
+add_custom_target(test_${exercise} ALL DEPENDS ${exercise} COMMAND ${exercise})

exercises/practice/pig-latin/pig_latin.cpp

@@ -0,0 +1,5 @@
+#include "pig_latin.h"
+
+namespace pig_latin {
+
+}  // namespace pig_latin

exercises/practice/pig-latin/pig_latin.h

@@ -0,0 +1,5 @@
+#pragma once
+
+namespace pig_latin {
+
+}  // namespace pig_latin

exercises/practice/pig-latin/pig_latin_test.cpp

@@ -0,0 +1,99 @@
+#include "pig_latin.h"
+#ifdef EXERCISM_TEST_SUITE
+#include <catch2/catch.hpp>
+#else
+#include "test/catch.hpp"
+#endif
+
+
+TEST_CASE("word beginning with a", "[11567f84-e8c6-4918-aedb-435f0b73db57]") {
+	REQUIRE("appleay" == pig_latin::translate("apple"));
+}
+
+#if defined(EXERCISM_RUN_ALL_TESTS)
+
+TEST_CASE("word beginning with e", "[f623f581-bc59-4f45-9032-90c3ca9d2d90]") {
+	REQUIRE("earay" == pig_latin::translate("ear"));
+}
+
+TEST_CASE("word beginning with i", "[7dcb08b3-23a6-4e8a-b9aa-d4e859450d58]") {
+	REQUIRE("iglooay" == pig_latin::translate("igloo"));
+}
+
+TEST_CASE("word beginning with o", "[0e5c3bff-266d-41c8-909f-364e4d16e09c]") {
+	REQUIRE("objectay" == pig_latin::translate("object"));
+}
+
+TEST_CASE("word beginning with u", "[614ba363-ca3c-4e96-ab09-c7320799723c]") {
+	REQUIRE("underay" == pig_latin::translate("under"));
+}
+
+TEST_CASE("word beginning with a vowel and followed by a qu", "[bf2538c6-69eb-4fa7-a494-5a3fec911326]") {
+	REQUIRE("equalay" == pig_latin::translate("equal"));
+}
+
+TEST_CASE("word beginning with p", "[e5be8a01-2d8a-45eb-abb4-3fcc9582a303]") {
+	REQUIRE("igpay" == pig_latin::translate("pig"));
+}
+
+TEST_CASE("word beginning with k", "[d36d1e13-a7ed-464d-a282-8820cb2261ce]") {
+	REQUIRE("oalakay" == pig_latin::translate("koala"));
+}
+
+TEST_CASE("word beginning with x", "[d838b56f-0a89-4c90-b326-f16ff4e1dddc]") {
+	REQUIRE("enonxay" == pig_latin::translate("xenon"));
+}
+
+TEST_CASE("word beginning with q without a following u", "[bce94a7a-a94e-4e2b-80f4-b2bb02e40f71]") {
+	REQUIRE("atqay" == pig_latin::translate("qat"));
+}
+
+TEST_CASE("word beginning with ch", "[c01e049a-e3e2-451c-bf8e-e2abb7e438b8]") {
+	REQUIRE("airchay" == pig_latin::translate("chair"));
+}
+
+TEST_CASE("word beginning with qu", "[9ba1669e-c43f-4b93-837a-cfc731fd1425]") {
+	REQUIRE("eenquay" == pig_latin::translate("queen"));
+}
+
+TEST_CASE("word beginning with qu and a preceding consonant", "[92e82277-d5e4-43d7-8dd3-3a3b316c41f7]") {
+	REQUIRE("aresquay" == pig_latin::translate("square"));
+}
+
+TEST_CASE("word beginning with th", "[79ae4248-3499-4d5b-af46-5cb05fa073ac]") {
+	REQUIRE("erapythay" == pig_latin::translate("therapy"));
+}
+
+TEST_CASE("word beginning with thr", "[e0b3ae65-f508-4de3-8999-19c2f8e243e1]") {
+	REQUIRE("ushthray" == pig_latin::translate("thrush"));
+}
+
+TEST_CASE("word beginning with sch", "[20bc19f9-5a35-4341-9d69-1627d6ee6b43]") {
+	REQUIRE("oolschay" == pig_latin::translate("school"));
+}
+
+TEST_CASE("word beginning with yt", "[54b796cb-613d-4509-8c82-8fbf8fc0af9e]") {
+	REQUIRE("yttriaay" == pig_latin::translate("yttria"));
+}
+
+TEST_CASE("word beginning with xr", "[8c37c5e1-872e-4630-ba6e-d20a959b67f6]") {
+	REQUIRE("xrayay" == pig_latin::translate("xray"));
+}
+
+TEST_CASE("y is treated like a consonant at the beginning of a word", "[a4a36d33-96f3-422c-a233-d4021460ff00]") {
+	REQUIRE("ellowyay" == pig_latin::translate("yellow"));
+}
+
+TEST_CASE("y is treated like a vowel at the end of a consonant cluster", "[adc90017-1a12-4100-b595-e346105042c7]") {
+	REQUIRE("ythmrhay" == pig_latin::translate("rhythm"));
+}
+
+TEST_CASE("y as second letter in two letter word", "[29b4ca3d-efe5-4a95-9a54-8467f2e5e59a]") {
+	REQUIRE("ymay" == pig_latin::translate("my"));
+}
+
+TEST_CASE("a whole phrase", "[44616581-5ce3-4a81-82d0-40c7ab13d2cf]") {
+	REQUIRE("ickquay astfay unray" == pig_latin::translate("quick fast run"));
+}
+
+#endif