ported the C++ version in C

GildedRose/C/GildedRose.c

@@ -0,0 +1,90 @@
+#include <string.h>
+#include "GildedRose.h"
+
+Item*
+init_item(Item* item, const char *name, int sellIn, int quality)
+{
+    item->sellIn = sellIn;
+    item->quality = quality;
+    item->name = strdup(name);
+    
+    return item;
+}
+
+void update_quality(Item items[], int size) 
+{
+    int i;
+    
+    for (i = 0; i < size; i++)
+    {
+        if (strcmp(items[i].name, "Aged Brie") && strcmp(items[i].name, "Backstage passes to a TAFKAL80ETC concert"))
+        {
+            if (items[i].quality > 0)
+            {
+                if (strcmp(items[i].name, "Sulfuras, Hand of Ragnaros"))
+                {
+                    items[i].quality = items[i].quality - 1;
+                }
+            }
+        }
+        else
+        {
+            if (items[i].quality < 50)
+            {
+                items[i].quality = items[i].quality + 1;
+
+                if (!strcmp(items[i].name, "Backstage passes to a TAFKAL80ETC concert"))
+                {
+                    if (items[i].sellIn < 11)
+                    {
+                        if (items[i].quality < 50)
+                        {
+                            items[i].quality = items[i].quality + 1;
+                        }
+                    }
+
+                    if (items[i].sellIn < 6)
+                    {
+                        if (items[i].quality < 50)
+                        {
+                            items[i].quality = items[i].quality + 1;
+                        }
+                    }
+                }
+            }
+        }
+
+        if (strcmp(items[i].name, "Sulfuras, Hand of Ragnaros"))
+        {
+            items[i].sellIn = items[i].sellIn - 1;
+        }
+
+        if (items[i].sellIn < 0)
+        {
+            if (strcmp(items[i].name, "Aged Brie"))
+            {
+                if (strcmp(items[i].name, "Backstage passes to a TAFKAL80ETC concert"))
+                {
+                    if (items[i].quality > 0)
+                    {
+                        if (strcmp(items[i].name, "Sulfuras, Hand of Ragnaros"))
+                        {
+                            items[i].quality = items[i].quality - 1;
+                        }
+                    }
+                }
+                else
+                {
+                    items[i].quality = items[i].quality - items[i].quality;
+                }
+            }
+            else
+            {
+                if (items[i].quality < 50)
+                {
+                    items[i].quality = items[i].quality + 1;
+                }
+            }
+        }
+    }
+}

GildedRose/C/GildedRose.h

@@ -0,0 +1,9 @@
+typedef struct
+{
+    char *name;
+    int sellIn;
+    int quality;
+} Item;
+
+extern Item* init_item(Item* item, const char *name, int sellIn, int quality);
+extern void update_quality(Item items[], int size);

GildedRose/C/GildedRoseTextTests.c

@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include "GildedRose.h"
+
+int
+print_item(Item *item)
+{
+    return printf("%s, %d, %d\n", item->name, item->sellIn, item->quality);
+}
+
+int main()
+{
+    Item items[9];
+    int last = 0;
+    int day;
+    int index;
+    
+    init_item(items + last++, "+5 Dexterity Vest", 10, 20);
+    init_item(items + last++, "Aged Brie", 2, 0);
+    init_item(items + last++, "Elixir of the Mongoose", 5, 7);
+    init_item(items + last++, "Sulfuras, Hand of Ragnaros", 0, 80);
+    init_item(items + last++, "Sulfuras, Hand of Ragnaros", -1, 80);
+    init_item(items + last++, "Backstage passes to a TAFKAL80ETC concert", 15, 20);
+    init_item(items + last++, "Backstage passes to a TAFKAL80ETC concert", 10, 49);
+    init_item(items + last++, "Backstage passes to a TAFKAL80ETC concert", 5, 49);
+    // this Conjured item doesn't yet work properly
+    init_item(items + last++, "Conjured Mana Cake", 3, 6);
+    
+    puts("OMGHAI!");
+
+    for (day = 0; day <= 30; day++)
+    {
+        printf("-------- day %d --------\n", day);
+        printf("name, sellIn, quality\n");
+        for(index = 0; index < last; index++) {
+            print_item(items + index);
+        }
+	
+        printf("\n");
+
+        update_quality(items, last);
+    }
+    return 0;
+}

GildedRose/C/GildedRoseUnitTests.cc

@@ -0,0 +1,43 @@
+#include <CppUTest/TestHarness.h>
+#include <CppUTest/CommandLineTestRunner.h>
+#include <CppUTestExt/MockSupport.h>
+
+extern "C" {
+#include "GildedRose.h"
+}
+
+TEST_GROUP(TestGildedRoseGroup)
+{
+  void setup() {
+  }
+  void teardown() {
+  }
+};
+
+TEST(TestGildedRoseGroup, FirstTest)
+{
+    Item items[2];
+    init_item(items, "Foo", 0, 0);
+    update_quality(items, 1);
+    STRCMP_EQUAL("fixme", items[0].name);
+}
+
+void example()
+{
+    Item items[6];
+    int last = 0;
+    
+    init_item(items + last++, "+5 Dexterity Vest", 10, 20);
+    init_item(items + last++, "Aged Brie", 2, 0);
+    init_item(items + last++, "Elixir of the Mongoose", 5, 7);
+    init_item(items + last++, "Sulfuras, Hand of Ragnaros", 0, 80);
+    init_item(items + last++, "Backstage passes to a TAFKAL80ETC concert", 15, 20);
+    init_item(items + last++, "Conjured Mana Cake", 3, 6);
+    update_quality(items, last);
+}
+
+int
+main(int ac, char** av)
+{
+  return CommandLineTestRunner::RunAllTests(ac, av);
+}

GildedRose/C/Makefile

@@ -0,0 +1,51 @@
+# Makefile for building the kata file with the Google Testing Framework
+#
+# SYNOPSIS:
+#
+#   make [all]  - makes everything.
+#   make TARGET - makes the given target.
+#   make clean  - removes all files generated by make.
+
+# Please tweak the following variable definitions as needed by your
+# project.
+
+# Points to the root of CppUTest, relative to where this file is.
+# Remember to tweak this if you move this file.
+CPPUTEST_HOME = CppUTest
+
+# Where to find user code.
+USER_DIR = .
+
+# Flags passed to the preprocessor.
+CPPFLAGS += -I$(CPPUTEST_HOME)/include
+
+# Flags passed to the C++ compiler.
+CFLAGS += -g -Wall -Wextra
+
+LD_LIBRARIES = -L$(CPPUTEST_HOME)/lib -lCppUTest -lCppUTestExt
+
+# All tests produced by this Makefile.  Remember to add new tests you
+# created to the list.
+TESTS = GildedRoseUnitTests
+
+TEXTTESTS = GildedRoseTextTests
+
+# House-keeping build targets.
+
+all : $(TESTS) $(TEXTTESTS)
+
+GildedRose.o : $(USER_DIR)/GildedRose.c
+
+GildedRoseUnitTests : $(USER_DIR)/GildedRoseUnitTests.cc GildedRose.o
+	$(CXX) $(CPPFLAGS) $(CFLAGS) -o $@ $(USER_DIR)/GildedRoseUnitTests.cc GildedRose.o $(LD_LIBRARIES)
+
+GildedRoseTextTests.o : $(USER_DIR)/GildedRoseTextTests.c
+
+GildedRoseTextTests : GildedRoseTextTests.o GildedRose.o
+	$(CC) $^ -o $@
+
+clean :
+	rm -f $(TESTS) $(TEXTTESTS) *.o *~
+
+check-syntax:
+	gcc $(CPPFLAGS) -o /dev/null -S ${CHK_SOURCES}

GildedRose/C/README

@@ -0,0 +1,5 @@
+run-once.sh runs your tests once
+
+Assumptions:
+  - make and a C++ compiler (like gcc) is installed on your system and is in the PATH
+  - The CppUTest framework is in the directory CppUTest

GildedRose/C/run-once.sh

@@ -0,0 +1,2 @@
+make
+./GildedRoseTextTests