Implementing pangram. (exercism#148)

* Implementing pangram.

* completed implementation of pangram.

* forgot the config

* enforce repo style

* further enforced style conventions.

* forgot a semicolon.

* updated config.json (sorry about that).

* changed function input to const reference.

CMakeLists.txt

@@ -50,6 +50,7 @@ foreach(exercise
     allergies
     atbash-cipher
     bracket-push
+    pangram
 )
     set(exercise_dir exercises/${exercise})
     travis_fixup(${exercise})

config.json

@@ -423,6 +423,17 @@
         "pattern matching",
         "stacks"
       ]
+    },
+    {
+      "uuid": "ea8d6224-0440-6d80-1569-a04127908a200d2ecf0",
+      "slug": "pangram",
+      "core": false,
+      "unlocked_by": null,
+      "difficulty": 2,
+      "topics": [
+            "control-flow (loops)",
+            "strings"
+        ]
     }
   ]
 }

exercises/pangram/CMakeLists.txt

@@ -0,0 +1,52 @@
+# Get the exercise name from the current directory
+get_filename_component(exercise ${CMAKE_CURRENT_SOURCE_DIR} NAME)
+
+# Basic CMake project
+cmake_minimum_required(VERSION 2.8.11)
+
+# Name the project after the exercise
+project(${exercise} CXX)
+
+# Locate Boost libraries: unit_test_framework, date_time and regex
+set(Boost_USE_STATIC_LIBS ON)
+set(Boost_USE_MULTITHREADED ON)
+set(Boost_USE_STATIC_RUNTIME OFF)
+find_package(Boost 1.59 REQUIRED COMPONENTS unit_test_framework date_time regex)
+
+# Enable C++11 features on gcc/clang
+if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(GNU|Clang)")
+    set(CMAKE_CXX_FLAGS "-std=c++11")
+endif()
+
+# Configure to run all the tests?
+if(${EXERCISM_RUN_ALL_TESTS})
+    add_definitions(-DEXERCISM_RUN_ALL_TESTS)
+endif()
+
+# 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 ${file}.cpp)
+else()
+    set(exercise_cpp "")
+endif()
+
+# Build executable from sources and headers
+add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h)
+
+# We need boost includes
+target_include_directories(${exercise} PRIVATE ${Boost_INCLUDE_DIRS})
+
+# We need boost libraries
+target_link_libraries(${exercise} ${Boost_LIBRARIES})
+
+# Tell MSVC not to warn us about unchecked iterators in debug builds
+if(${MSVC})
+    set_target_properties(${exercise} PROPERTIES
+        COMPILE_DEFINITIONS_DEBUG _SCL_SECURE_NO_WARNINGS)
+endif()
+
+# Run the tests on every build
+add_custom_command(TARGET ${exercise} POST_BUILD COMMAND ${exercise})

exercises/pangram/example.cpp

@@ -0,0 +1,35 @@
+#include "pangram.h"
+#include <cctype>
+
+namespace
+{
+
+bool found_letter(char a, const std::string &s)
+{
+    for(auto c: s) {
+        if(tolower(c) ==a) {
+            return true;
+        }
+    }
+    return false;
+}
+
+}
+
+namespace pangram
+{
+
+bool is_pangram(const std::string &s)
+{
+    char letters[] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
+    for(char l : letters)
+    {
+        if(!found_letter(l, s))
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+}

exercises/pangram/example.h

@@ -0,0 +1,11 @@
+#if !defined(PANGRAM_H)
+#define PANGRAM_H
+#include <string>
+
+namespace pangram
+{
+
+bool is_pangram(const std::string &s);
+
+}
+#endif

exercises/pangram/pangram_test.cpp

@@ -0,0 +1,50 @@
+#include "pangram.h"
+#define BOOST_TEST_MAIN
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_CASE(sentence_empty)
+{
+    BOOST_REQUIRE(!pangram::is_pangram(""));
+}
+
+#ifdef EXERCISM_RUN_ALL_TESTS
+BOOST_AUTO_TEST_CASE(pangram_with_only_lower_case)
+{
+    BOOST_REQUIRE(pangram::is_pangram("the quick brown fox jumps over the lazy dog"));
+}
+
+BOOST_AUTO_TEST_CASE(missing_character_x)
+{
+    BOOST_REQUIRE(!pangram::is_pangram("a quick movement of the enemy will jeopardize five gunboats"));
+}
+
+BOOST_AUTO_TEST_CASE(another_missing_x)
+{
+    BOOST_REQUIRE(!pangram::is_pangram("the quick brown fish jumps over the lazy dog"));
+}
+
+BOOST_AUTO_TEST_CASE(pangram_with_underscores)
+{
+    BOOST_REQUIRE(pangram::is_pangram("the_quick_brown_fox_jumps_over_the_lazy_dog"));
+}
+
+BOOST_AUTO_TEST_CASE(pangram_with_numbers)
+{
+    BOOST_REQUIRE(pangram::is_pangram("the 1 quick brown fox jumps over the 2 lazy dogs"));
+}
+
+BOOST_AUTO_TEST_CASE(missing_letters_replaced_with_numbers)
+{
+    BOOST_REQUIRE(!pangram::is_pangram("7h3 qu1ck brown fox jumps ov3r 7h3 lazy dog"));
+}
+
+BOOST_AUTO_TEST_CASE(pangram_with_mixed_case_and_punctuation)
+{
+    BOOST_REQUIRE(pangram::is_pangram("\"Five quacking Zephyrs jolt my wax bed.\""));
+}
+
+BOOST_AUTO_TEST_CASE(upper_and_lower_should_not_be_counted_seperately)
+{
+    BOOST_REQUIRE(!pangram::is_pangram("the quick brown fox jumps over with lazy FX"));
+}
+#endif