pretty smooth, printnormal is not working its still beta

diff.c

@@ -79,6 +79,7 @@ void diff_output_conflict_error(void) {
 void loadfiles(const char* filename1, const char* filename2) {
 
   if (filename2 == NULL) { printf("Usage: ./diff [options] file1 file2\n"); exit(1); }
+  if (*filename1 == *filename2) { exit(0); }
 
   memset(buf, 0, sizeof(buf));
   memset(strings1, 0, sizeof(strings1));
@@ -96,11 +97,6 @@ void loadfiles(const char* filename1, const char* filename2) {
 }
 
 void version() {
-  // printf("\n     _ _  __  __                            \n");
-  // printf("  __| (_)/ _|/ _|      _ __ ___ _ __ ___    \n");
-  // printf(" / _` | | |_| |_ _____| '__/ __| '_ ` _ \\   \n");
-  // printf("| (_| | |  _|  _|_____| | | (__| | | | | |  \n");
-  // printf(" \\__,_|_|_| |_|       |_|  \\___|_| |_| |_|  \n\n");
   printf("\n\n       ██ ██   ████   ████                                     \n");
   printf("      ░██░░   ░██░   ░██░                                        \n");
   printf("      ░██ ██ ██████ ██████        ██████  █████  ██████████     \n");
@@ -144,8 +140,7 @@ int normal(const char* filename1, const char* filename2) {
   printf("THIS IS NOT NORMAL FOR NOW. THIS IS PLACEHOLDER. MMKAY.\n");
   printf("THIS IS NOT NORMAL FOR NOW. THIS IS PLACEHOLDER. MMKAY.\n\n\n");
 
-  pa_print(p, printleft);
-  pa_print(q, printright);
+  pa_print(p, printnormal);
 
   return 0;
 }
@@ -161,7 +156,7 @@ int sideside(const char* filename1, const char* filename2) {
 void quiet(const char* filename1, const char* filename2) { if (pa_equal(p, q) == 0) { printf("The files are not the same.\n"); } else { return; } }
 void loud(const char* filename1, const char* filename2) {
 
-  if (pa_equal(p, q) != 0) { printf("The files are equal.\n"); }
+  if (pa_equal(p, q) != 0) { printf("The files are identical.\n"); }
   else { normal(files[0], files[1]); }
 
 }

pa.c

@@ -57,6 +57,13 @@ void printboth(const char* left_right) {
   printf("%-50s %s", buf, left_right);
 }
 
+void printnormal(const char* first) {
+  char buf[BUFLEN];
+  size_t len1 = strlen(first);
+  if (len1 > 0) { strncpy(buf, first, len1); }
+  buf[len1 - 1] = '\0';
+}
+
 size_t pa_filesize(pa* p) { return p == NULL ? 0 : p->filesize; }
 size_t pa_size(pa* p) { return p == NULL || p->stop < p->start ? 0 : p->stop - p->start + 1; }
 
@@ -70,11 +77,14 @@ char* pa_info(pa* p) {
 }
 
 int pa_equal(pa* p, pa* q) {
+
   if (p == NULL || q == NULL) { return 0; }
   if (pa_size(p) != pa_size(q)) { return 0; }
-  int i = p->start, j = q->start, equal = 0;
-  while ((equal = strcmp(p->base[i], q->base[i])) == 0) { ++i; ++j; }
-  return equal;
+  if (p->start >= p->filesize || q->start >= q->filesize) { return 0; }
+  int i = p->start, j = q->start, equal = 0, psize = p->filesize, qsize = q->filesize;
+  while (i < psize && j < qsize && (equal = strcmp(p->base[i], q->base[i])) == 0) { ++i; ++j; }
+  return 1;
+
 }
 
 FILE* openfile(const char* filename, const char* openflags) {

pa.h

@@ -30,6 +30,7 @@ void pa_print(pa* p, void (*fp)(const char*));
 void printboth(const char* left_right);
 void printleft(const char* left);
 void printright(const char* right);
+void printnormal(const char* first);
 FILE* openfile(const char* filename, const char* openflags);
 char* yesorno(int condition);