Removed submodules

lab2-cmd/.gitignore

@@ -0,0 +1,20 @@
+# Ignore all compiled files regardless of location
+**/*.o
+
+# But not the private.o
+!tests/private.o
+
+# Ignore executables for this project
+shell
+testsuite
+
+# Ignore test outputs
+tests/ckstyle
+tests/itests.txt
+tests/outputs
+tests/style.txt
+tests/valgrind
+tests/utests.txt
+
+**/.nfs*
+**/.vscode

lab2-cmd/Makefile

@@ -0,0 +1,51 @@
+#
+# Simple Makefile
+# Mike Lam, James Madison University, August 2016
+#
+# This makefile builds a simple application that contains a main module
+# (specified by the EXE variable) and a predefined list of additional modules
+# (specified by the MODS variable). If there are any external library
+# dependencies (e.g., the math library, "-lm"), list them in the LIBS variable.
+# If there are any precompiled object files, list them in the OBJS variable.
+#
+# By default, this makefile will build the project with debugging symbols and
+# without optimization. To change this, edit or remove the "-g" and "-O0"
+# options in CFLAGS and LDFLAGS accordingly.
+#
+# By default, this makefile build the application using the GNU C compiler,
+# adhering to the C99 standard with all warnings enabled.
+
+
+# application-specific settings and run target
+
+EXE=shell
+MODS=model.o effects.o
+OBJS=
+LIBS=
+
+default: $(EXE)
+
+test: $(EXE)
+	make -C tests test
+
+# compiler/linker settings
+
+CC=gcc
+CFLAGS=-g -O0 -Wall -Werror --std=c99 -pedantic
+LDFLAGS=-g -O0
+
+
+# build targets
+
+$(EXE): main.o $(MODS) $(OBJS)
+	$(CC) $(LDFLAGS) -o $(EXE) $^ $(LIBS)
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) $<
+
+clean:
+	rm -f $(EXE) main.o $(MODS)
+	make -C tests clean
+
+.PHONY: default clean
+

lab2-cmd/effects.c

@@ -0,0 +1,88 @@
+#define _POSIX_C_SOURCE 200809L // needed for strdup extension
+
+#include <assert.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "effects.h"
+#include "model.h"
+
+/* Executed when starting to process a new command line. The fsm_t
+   should have been updated to include a pointer to the current token.
+   For instance, if the command line was "ls -l data NL", the fsm_t
+   has a field that points to "ls". */
+void
+start_command (fsm_t *cmdmodel)
+{
+  printf ("Starting new command: %s\n", cmdmodel->current_token);
+  // TODO: Copy the current token to store it in the FSM's command
+  // field. Next, create the FSM's args array (length MAX_ARGUMENTS)
+  // set the current token as args[0], and initialize nargs to be
+  // the number of arguments (1 at this point).
+  // Allocate args array (NULL-initialized) if not already
+  cmdmodel->args = calloc (MAX_ARGUMENTS, sizeof (char *));
+  cmdmodel->command = cmdmodel->current_token;
+  cmdmodel->args[0] = cmdmodel->current_token;
+  cmdmodel->nargs = 1;
+}
+
+/* Executed when processing a token after the command name. For instance,
+   if the command line was "ls -l data NL", this function will be called
+   when the current token is "-l" and again when it is "data". */
+void
+append (fsm_t *cmdmodel)
+{
+  if (cmdmodel->nargs >= MAX_ARGUMENTS)
+    return;
+
+  printf ("Appending %s to the argument list\n", cmdmodel->current_token);
+  assert (cmdmodel->args != NULL);
+
+  // TODO: Store the current token into the args array and increment nargs
+  cmdmodel->args[cmdmodel->nargs++] = cmdmodel->current_token;
+}
+
+/* Executed when either a NL or | (pipe) is encountered. For instance, if
+   the command line is "ls -l data NL", the current token will be "NL"; also,
+   the FSM's args array should be complete, containing "ls", "-l", and "data",
+   followed by several NULL pointers. */
+void
+execute (fsm_t *cmdmodel)
+{
+  assert (cmdmodel->args != NULL);
+
+  // TODO: Print out the argument list similar to the format shown and free
+  // the args array.
+  printf ("Execute %s with arguments { ", cmdmodel->args[0]);
+  for (uint8_t i = 0; i < cmdmodel->nargs; i++)
+    {
+      printf ("%s, ", cmdmodel->args[i]);
+    }
+  printf ("(null) }\n");
+}
+
+// No changes are needed to the effects below
+
+void
+link_commands (fsm_t *cmdmodel)
+{
+  printf ("Set up pipe\n");
+  execute (cmdmodel);
+}
+
+void
+error_pipe (fsm_t *cmdmodel)
+{
+  printf ("ERROR: Received token %s while in state %s\n",
+          cmdmodel->current_token, state_name (cmdmodel->state));
+}
+
+void
+error_newline (fsm_t *cmdmodel)
+{
+  printf ("ERROR: Received token %s while in state %s\n",
+          cmdmodel->current_token, state_name (cmdmodel->state));
+}

lab2-cmd/effects.h

@@ -0,0 +1,13 @@
+#ifndef __effects_h__
+#define __effects_h__
+
+#include "model.h"
+
+void start_command (fsm_t *);
+void append (fsm_t *);
+void execute (fsm_t *);
+void link_commands (fsm_t *);
+void error_pipe (fsm_t *);
+void error_newline (fsm_t *);
+
+#endif

lab2-cmd/main.c

@@ -0,0 +1,61 @@
+/*
+ * CS 361: Template lab driver
+ *
+ * Name:
+ */
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "model.h"
+
+void
+usage (void)
+{
+  printf ("shell, a command line state model simulator\n\n");
+  printf ("usage: shell cmd [arg ...] [ | cmd [arg ...] ... ]\n");
+  printf ("Each cmd can contain an argument list of variable length\n");
+  printf ("Each cmd after the first must be preceded by a pipe | character\n");
+}
+
+int
+main (int argc, char **argv)
+{
+  // With no arguments, show usage and exit
+  if (argc != 2)
+    {
+      usage ();
+      return EXIT_FAILURE;
+    }
+
+  // Declare and initialize a FSM
+  fsm_t *cmdmodel = cmdline_init ();
+  if (cmdmodel == NULL)
+    return EXIT_FAILURE;
+
+  // TODO: Change this to split the string into tokens, where
+  // each token is an event that needs to be handled. After
+  // looking up the event number, store the token in the FSM
+  // and call handle_event().
+  char *token = strtok (argv[1], " ");
+  while (token != NULL)
+    {
+      cmdmodel->current_token = token;
+      event_t event = lookup (token);
+      if (!handle_event (cmdmodel, event))
+        break;
+
+      token = strtok (NULL, " ");
+    }
+
+  // Free remaining allocated data
+  if (cmdmodel->args != NULL)
+    free (cmdmodel->args);
+  free (cmdmodel);
+
+  return EXIT_SUCCESS;
+}

lab2-cmd/model.c

@@ -0,0 +1,130 @@
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "effects.h"
+#include "model.h"
+
+// TODO: Complete this table mapping state/events to the target state. Each
+// row corresponds to the current state. Each column within that row indicates
+// the next state for a given event. If there is no transition defined, that
+// entry should be NST ("no state").
+static state_t const _transitions[NUM_STATES][NUM_EVENTS]
+    = { { Command, Term, NST },
+        { Arguments, Make_Pipe, Term },
+        { Arguments, Make_Pipe, Term },
+        { Command, Term, Term },
+        { NST, NST, NST } };
+
+// TODO: Create a table mapping states/events to the effect functions. If
+// there is no valid transition, the entry here would be NULL because actions
+// are function pointers.
+static action_t const _effects[NUM_STATES][NUM_EVENTS]
+    = { { start_command, error_pipe, NULL },
+        { append, link_commands, execute },
+        { append, link_commands, execute },
+        { start_command, error_pipe, error_newline },
+        { NULL, NULL, NULL } };
+
+/* Create an instance of an FSM and initialize its fields as appropriate.
+   Some fields are common to most FSMs (such as an initial state or a
+   pointer to a transition function). Other fields will be specific to
+   this fsm_t declaration. Return NULL if any part of the initialization
+   fails. */
+fsm_t *
+cmdline_init (void)
+{
+  fsm_t *fsm = calloc (1, sizeof (fsm_t));
+  fsm->state = Init;
+  fsm->transition = transition;
+
+  return fsm;
+}
+
+// TODO: Create a transition function that is specific to this type
+// of FSM. This function needs to take an fsm_t* and an event, returning
+// both the new state and the effect to perform (the latter is returned
+// using a call-by-reference parameter. This function should NOT contain
+// any "if" types of statements based on the state or event; it should
+// simply lookup these values in the tables defined above.
+state_t
+transition (struct fsm *fsm, event_t event, action_t *effect)
+{
+  assert (fsm->state < NST);
+  assert (event < NIL);
+
+  *effect = _effects[fsm->state][event];
+  return _transitions[fsm->state][event];
+}
+
+/* Helper function for providing a printable string name for an event */
+const char *
+event_name (event_t evt)
+{
+  assert (evt <= NIL);
+
+  // Event names for printing out
+  const char *names[] = { "TOKEN", "PIPE", "NEWLINE", "NIL" };
+  return names[evt];
+}
+
+/* Helper function for providing a printable string name for an state */
+const char *
+state_name (state_t st)
+{
+  assert (st <= NST);
+
+  // State names for printing out
+  const char *names[]
+      = { "Init", "Command", "Arguments", "Make_Pipe", "Term", "NST" };
+  return names[st];
+}
+
+/* Generic front-end for handling events. Should do nothing more
+   than calling the FSM's transition function, performing an effect
+   (if appropriate) and updating the state. Return false if the new
+   state is the terminal state. */
+bool
+handle_event (fsm_t *fsm, event_t event)
+{
+  assert (fsm != NULL);
+  // TODO: Look up the current state/event combination in the
+  // transition table. Print the following line for debugging
+  // purposes just for this lab. This should be printed even
+  // if there is no transition.
+  action_t effect;
+  state_t new_state = fsm->transition (fsm, event, &effect);
+  printf ("[%s.%s -> %s]\n", state_name (fsm->state), event_name (event),
+          state_name (new_state));
+
+  // TODO: If the state/event combination is valid, execute
+  // the transition and effect function (if there is one).
+  // If the next state is Term (terminated), return false.
+  // Otherwise return true.
+  if (new_state != NST)
+    {
+      if (effect != NULL)
+        {
+          effect (fsm);
+        }
+
+      fsm->state = new_state;
+    }
+
+  return fsm->state != Term;
+}
+
+/* Given a string, return the event type. Do not modify this function. */
+event_t
+lookup (char *token)
+{
+  if (!strcmp (token, "|"))
+    return PIPE;
+
+  if (!strcmp (token, "NL"))
+    return NEWLINE;
+
+  return TOKEN;
+}

lab2-cmd/model.h

@@ -0,0 +1,75 @@
+#ifndef __model_h__
+#define __model_h__
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+// Generic definitions for any type of statemodel
+
+// States and events should just be integers
+typedef int state_t;
+typedef int event_t;
+
+// Needed for circular typedef. This lets action_t use fsm_t in its parameter
+// list, while the struct fsm can use action_t as a field.
+typedef struct fsm fsm_t;
+
+// All entry, exit, and effect instances use the action type
+typedef void (*action_t) (fsm_t *);
+
+// Each FSM instance contains a current state
+struct fsm
+{
+  state_t state; // current state
+
+  // pointer to the FSM's transition function
+  state_t (*transition) (struct fsm *, event_t, action_t *);
+
+  // Additional data fields specific to this FSM
+  char *command;       // the name of the command to run
+  size_t nargs;        // the number of command-line arguments
+  char **args;         // the command-line arguments
+  char *current_token; // current token being processed
+};
+
+// Generic entry point for handling events
+bool handle_event (fsm_t *, event_t);
+
+// Additional definitions specific to an FSM for command line processing
+
+#define MAX_ARGUMENTS 10
+
+// Events
+typedef enum
+{
+  TOKEN,   // normal command-line token
+  PIPE,    // vertical bar character
+  NEWLINE, // newline at the end of the command
+  NIL      // invalid non-event
+} cmdevt_t;
+#define NUM_EVENTS NIL
+
+// States
+typedef enum
+{
+  Init,      // initial state
+  Command,   // establishing the command name
+  Arguments, // building the argument list
+  Make_Pipe, // linking the commands together for a pipe
+  Term,      // terminal state (execute program or error)
+  NST        // invalid non-state
+} cmdst_t;
+#define NUM_STATES NST
+
+// Helper functions
+fsm_t *cmdline_init (void); // initialize the FSM
+state_t transition (struct fsm *fsm, event_t event, action_t *effect);
+event_t lookup (char *); // convert an event string to its numeric value
+
+// Translate event/state numbers to their string equivalent
+const char *event_name (event_t);
+const char *state_name (state_t);
+
+#endif

lab2-cmd/tests/Makefile

@@ -0,0 +1,88 @@
+#
+# Simple Test Makefile
+# Mike Lam, James Madison University, August 2016
+#
+# This version of the Makefile includes support for building a test suite. The
+# recommended framework is Check (http://check.sourceforge.net/). To build and
+# run the test suite, execute the "test" target. The test suite must be located
+# in a module called "testsuite". The MODS, LIBS, and OBJS variables work as
+# they do in the main Makefile.
+#
+# To change the default build target (which executes when you just type
+# "make"), change the right-hand side of the definition of the "default"
+# target.
+#
+# By default, this makefile will build the project with debugging symbols and
+# without optimization. To change this, edit or remove the "-g" and "-O0"
+# options in CFLAGS and LDFLAGS accordingly.
+#
+# By default, this makefile build the application using the GNU C compiler,
+# adhering to the C99 standard with all warnings enabled.
+
+
+# application-specific settings and run target
+
+EXE=../fsm
+TEST=testsuite
+MODS=public.o
+OBJS=../model.o ../effects.o private.o
+LIBS=
+
+UTESTOUT=utests.txt
+ITESTOUT=itests.txt
+SCHECKOUT=style.txt
+
+default: $(TEST)
+
+$(EXE):
+	make -C ../
+
+test: utest itest style
+	@echo "========================================"
+
+utest: $(EXE) $(TEST)
+	@echo "========================================"
+	@echo "             UNIT TESTS"
+	@./utests.sh | tee $(UTESTOUT)
+
+itest: $(EXE)
+	@echo "========================================"
+	@echo "          INTEGRATION TESTS"
+	@./integration.sh | tee $(ITESTOUT)
+
+style: $(EXE)
+	@echo "========================================"
+	@echo "          CODING STYLE CHECK"
+	@./style.sh 2>/dev/null >$(SCHECKOUT)
+	@cat $(SCHECKOUT) 
+
+# compiler/linker settings
+
+CC=gcc
+CFLAGS=-g -O0 -Wall --std=c99
+LDFLAGS=-g -O0
+
+#CFLAGS+=-I/opt/local/include -Wno-gnu-zero-variadic-macro-arguments
+#CFLAGS+=-Wno-gnu-zero-variadic-macro-arguments
+#LDFLAGS+=-L/opt/local/lib
+#LDFLAGS=
+LIBS+=-lcheck -lm -lpthread
+
+ifeq ($(shell uname -s),Linux)
+	LIBS+=-lrt -lsubunit
+endif
+
+
+# build targets
+
+$(TEST): $(TEST).o $(MODS) $(OBJS)
+	$(CC) $(LDFLAGS) -o $(TEST) $^ $(LIBS)
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) $<
+
+clean:
+	rm -rf $(TEST) $(TEST).o $(MODS) $(UTESTOUT) $(ITESTOUT) $(SCHECKOUT) outputs valgrind ckstyle
+
+.PHONY: default clean test unittest inttest
+

lab2-cmd/tests/expected/.INTEG_command.sha

@@ -0,0 +1 @@
+015ebe95460b1d6fbf79df280ec3ae5fab362ae8

lab2-cmd/tests/expected/.INTEG_execute.sha

@@ -0,0 +1 @@
+42ae8f1bdf52b57ad234791690bf611379fc8249

lab2-cmd/tests/expected/.INTEG_execute_flags.sha

@@ -0,0 +1 @@
+ebc846cda2557a05e691ef4d7dc7de4ee312cbd1

lab2-cmd/tests/expected/.INTEG_execute_name.sha

@@ -0,0 +1 @@
+2fd3754d04e83c387269e26d81186b290d299f82

lab2-cmd/tests/expected/.INTEG_pipe.sha

@@ -0,0 +1 @@
+17611b03d098cb2d095ddac6dc39c08f66514f4e

lab2-cmd/tests/expected/.INTEG_pipe_flags.sha

@@ -0,0 +1 @@
+10b932ebcb7ca5600c9b81652547ea3721854698

lab2-cmd/tests/expected/INTEG_command.txt

@@ -0,0 +1,2 @@
+[Init.TOKEN -> Command]
+Starting new command: ls

lab2-cmd/tests/expected/INTEG_execute.txt

@@ -0,0 +1,4 @@
+[Init.TOKEN -> Command]
+Starting new command: ls
+[Command.NEWLINE -> Term]
+Execute ls with arguments { ls, (null) }

lab2-cmd/tests/expected/INTEG_execute_flags.txt

@@ -0,0 +1,8 @@
+[Init.TOKEN -> Command]
+Starting new command: ls
+[Command.TOKEN -> Arguments]
+Appending -a to the argument list
+[Arguments.TOKEN -> Arguments]
+Appending -l to the argument list
+[Arguments.NEWLINE -> Term]
+Execute ls with arguments { ls, -a, -l, (null) }

lab2-cmd/tests/expected/INTEG_execute_name.txt

@@ -0,0 +1,6 @@
+[Init.TOKEN -> Command]
+Starting new command: ls
+[Command.TOKEN -> Arguments]
+Appending data to the argument list
+[Arguments.NEWLINE -> Term]
+Execute ls with arguments { ls, data, (null) }

lab2-cmd/tests/expected/INTEG_pipe.txt

@@ -0,0 +1,9 @@
+[Init.TOKEN -> Command]
+Starting new command: ls
+[Command.PIPE -> Make_Pipe]
+Set up pipe
+Execute ls with arguments { ls, (null) }
+[Make_Pipe.TOKEN -> Command]
+Starting new command: head
+[Command.NEWLINE -> Term]
+Execute head with arguments { head, (null) }

lab2-cmd/tests/expected/INTEG_pipe_flags.txt

@@ -0,0 +1,15 @@
+[Init.TOKEN -> Command]
+Starting new command: ls
+[Command.TOKEN -> Arguments]
+Appending -l to the argument list
+[Arguments.PIPE -> Make_Pipe]
+Set up pipe
+Execute ls with arguments { ls, -l, (null) }
+[Make_Pipe.TOKEN -> Command]
+Starting new command: head
+[Command.TOKEN -> Arguments]
+Appending -n to the argument list
+[Arguments.TOKEN -> Arguments]
+Appending 1 to the argument list
+[Arguments.NEWLINE -> Term]
+Execute head with arguments { head, -n, 1, (null) }

lab2-cmd/tests/integration.sh

@@ -0,0 +1,75 @@
+#!/bin/bash
+
+EXE="../shell"
+
+function run_test {
+
+    # parameters
+    TAG=$1
+    ARGS=$2
+
+    # file paths
+    OUTPUT=outputs/$TAG.txt
+    DIFF=outputs/$TAG.diff
+    EXPECT=expected/$TAG.txt
+    VALGRND=valgrind/$TAG.txt
+
+    # print tag format
+    PTAG=$(printf '%-30s' "$TAG")
+
+    # check for expected text that needs to be fixed
+    if [ ! -z "$(egrep "<<<<.*>>>>" "$EXPECT")" ] ; then
+        echo "$PTAG FAIL ($EXPECT not correct)"
+        return
+    fi
+
+    # compare the file
+    SHAOUT=$(shasum "$EXPECT" | awk '{print $1}')
+    SHAEXP=$(cat "expected/.$TAG.sha")
+    if [ "$SHAOUT" != "$SHAEXP" ] ; then
+        echo "$PTAG FAIL ($EXPECT not correct)"
+        return
+    fi
+
+    # run test and compare output to the expected version
+    $EXE "$ARGS" 2>/dev/null >"$OUTPUT"
+    diff -u "$OUTPUT" "$EXPECT" >"$DIFF"
+    if [ -s "$DIFF" ]; then
+
+        # try alternative solution (if it exists)
+        EXPECT=expected/$TAG-2.txt
+        if [ -e "$EXPECT" ]; then
+            diff -u "$OUTPUT" "$EXPECT" >"$DIFF"
+            if [ -s "$DIFF" ]; then
+                echo "$PTAG FAIL (see $DIFF for details)"
+            else
+                echo "$PTAG pass"
+            fi
+        else
+            echo "$PTAG FAIL (see $DIFF for details)"
+        fi
+    else
+        echo "$PTAG pass"
+    fi
+
+    # run valgrind
+    valgrind $EXE $ARGS &>$VALGRND
+}
+
+# initialize output folders
+mkdir -p outputs
+mkdir -p valgrind
+rm -f outputs/* valgrind/*
+
+# run individual tests
+source itests.include
+
+# check for memory leaks
+LEAK=`cat valgrind/*.txt | grep 'definitely lost' | grep -v ' 0 bytes in 0 blocks'`
+if [ -z "$LEAK" ]; then
+    echo "No memory leak found."
+else
+    echo "Memory leak(s) found. See files listed below for details."
+    grep 'definitely lost' valgrind/*.txt | grep -v ' 0 bytes in 0 blocks' | sed -e 's/:.*$//g' | sed -e 's/^/  - /g'
+fi
+

lab2-cmd/tests/itests.include

@@ -0,0 +1,11 @@
+# list of integration tests
+#  format: run_test <TAG> <ARGS>
+#    <TAG>      used as the root for all filenames (i.e., "expected/$TAG.txt")
+#    <ARGS>     command-line arguments to test
+
+run_test    INTEG_command         "ls"
+run_test    INTEG_execute         "ls NL"
+run_test    INTEG_execute_name    "ls data NL"
+run_test    INTEG_execute_flags   "ls -a -l NL"
+run_test    INTEG_pipe            "ls | head NL"
+run_test    INTEG_pipe_flags      "ls -l | head -n 1 NL"

lab2-cmd/tests/public.c

@@ -0,0 +1,53 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include <check.h>
+
+#include "../effects.h"
+#include "../model.h"
+
+/* nothing but starting a new cmdline */
+START_TEST (UNIT_new_cmdline)
+{
+  printf ("\n======================================\n");
+  printf ("UNIT TEST: new_cmdline\n\n");
+
+  fsm_t *fsm = cmdline_init ();
+  assert (fsm != NULL);
+
+  handle_event (fsm, TOKEN);
+  ck_assert_int_eq (fsm->state, Command);
+
+  free (fsm);
+}
+END_TEST
+
+/* a single cmdline from NEW to TRM */
+START_TEST (UNIT_exec_cmd)
+{
+  printf ("\n======================================\n");
+  printf ("UNIT TEST: exec_cmd\n\n");
+
+  fsm_t *fsm = cmdline_init ();
+  assert (fsm != NULL);
+
+  handle_event (fsm, TOKEN);
+  ck_assert_int_eq (fsm->state, Command);
+
+  handle_event (fsm, NEWLINE);
+  ck_assert_int_eq (fsm->state, Term);
+
+  free (fsm);
+}
+END_TEST
+
+void public_tests (Suite *s)
+{
+  TCase *tc_public = tcase_create ("Public");
+  tcase_add_test (tc_public, UNIT_new_cmdline);
+  tcase_add_test (tc_public, UNIT_exec_cmd);
+  suite_add_tcase (s, tc_public);
+}
+

lab2-cmd/tests/style.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+STYLE="gnu"
+
+IGNORE=()
+FAIL=0
+
+function comp_file {
+
+    SRC=$1
+    SRC_NAME=$2
+
+    # file paths
+    FORMAT=ckstyle/${SRC_NAME}.$STYLE
+    DIFF=ckstyle/${SRC_NAME}.diff
+
+    # run clang-format and compare results
+    clang-format --style=$STYLE $source > $FORMAT
+    diff -u $SRC $FORMAT >$DIFF
+
+    PTAG=$(printf '%-30s' "$SRC_NAME")
+    if [ -s $DIFF ]; then
+        echo "$PTAG FAIL (see $DIFF for details)"
+        FAIL=1
+    else
+        echo "$PTAG pass"
+				rm $DIFF
+    fi
+    rm $FORMAT
+}
+
+mkdir -p ckstyle
+rm -f ckstyle/*
+
+for source in $(ls ../*.c ../*.h) ; do
+    SKIP=0
+    src=$(basename $source)
+    for ignore in ${IGNORE[*]} ; do
+        if [ "$src" = "$ignore" ] ; then
+            SKIP=1
+        fi
+    done
+    if [ $SKIP = 0 ] ; then
+        comp_file $source $src
+    fi
+done
+
+if [ $FAIL != 0 ] ; then
+    echo "Code that does not adhere to GNU standards will not be accepted."
+		echo "You must fix these files before submission."
+else
+    echo "Code correctly adheres to required style."
+fi

lab2-cmd/tests/testsuite.c

@@ -0,0 +1,34 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+#include <time.h>
+
+#include <check.h>
+
+extern void public_tests (Suite *s);
+extern void private_tests (Suite *s);
+
+Suite * test_suite (void)
+{
+    Suite *s = suite_create ("Default");
+    public_tests (s);
+    private_tests (s);
+    return s;
+}
+
+void run_testsuite ()
+{
+    Suite *s = test_suite ();
+    SRunner *sr = srunner_create (s);
+    srunner_run_all (sr, CK_NORMAL);
+    srunner_free (sr);
+}
+
+int main (void)
+{
+    srand((unsigned)time(NULL));
+    run_testsuite ();
+    return EXIT_SUCCESS;
+}

lab2-cmd/tests/utests.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+OUTPUT=utests.output
+
+./testsuite > "$OUTPUT" 2>/dev/null
+
+if [ ! -s "$OUTPUT" ] ; then
+    echo "UNIT FAIL (testsuite produced no output)"
+    rm -f "$OUTPUT"
+    exit 1
+fi
+
+cat "$OUTPUT" | awk '/Failures/,0'
+
+percent=$(cat "$OUTPUT" | grep Failures | cut -d':' -f1)
+rm -f "$OUTPUT"
+[ "$percent" = "100%" ] && exit 0
+
+echo "(run ./testsuite in tests directory for more information)"
+exit 1
+