remove strcmp and fix hidden bugs

Makefile

@@ -11,8 +11,8 @@ libstrops.a : strops.o
 	ar cr libstrops.a strops.o
 
 strops.o : strops.c
-#	gcc -c -fPIC -ansi -ggdb -o strops.o strops.c
+#	gcc -c -ansi -fPIC -ggdb -o strops.o strops.c
-	gcc -c -ansi -O2 -pipe -o strops.o strops.c
+	gcc -c -ansi -fpic -O2 -pipe -o strops.o strops.c
 
 .PHONY : install uninstall
 

strops.c

@@ -132,7 +132,9 @@ bool_t strops_equals(const char* string1, const char* string2) {
 }
 
 bool_t strops_starts_with(const char* string1, const char* string2) {
-    assert(strops_length(string1) >= strops_length(string2) && "string2 cannot be longer than string1");
+    if (strops_length(string1) < strops_length(string2)) {
+        return 0;   
+    }
     bool_t starts_with = 1;
     ull_t i;
     for (i = 0; i < strops_length(string2); i++) {
@@ -284,7 +286,7 @@ char* strops_trim_right_string(const char* string, const char* string_to_remove)
     ull_t offset = strops_length(result) - strops_length(string_to_remove);
     char* tmp = result + offset;
 
-    while (strcmp(tmp, string_to_remove) == 0) {
+    while (strops_equals(tmp, string_to_remove)) {
         ull_t i;
         for (i = 0; i < strops_length(string_to_remove); i++) {
             strops_remove_at_pos_char_inplace(result, offset);
@@ -299,16 +301,13 @@ char* strops_trim_right_string(const char* string, const char* string_to_remove)
 char* strops_trim_left_string(const char* string, const char* string_to_remove) {
     assert(strops_length(string) >= strops_length(string_to_remove) && "string_to_remove cannot be bigger than string");
     char* result = strops_copy(string);
-    char* tmp = strops_copy(string_to_remove);
 
-    while (strcmp(tmp, string_to_remove) == 0) {
+    while (strops_first_pos_of_string(result, string_to_remove) == 0) {
         ull_t i;
         for (i = 0; i < strops_length(string_to_remove); i++) {
             strops_remove_at_pos_char_inplace(result, 0);
         }
-        tmp = strops_copy_amount(result, strops_length(string_to_remove));
     }
-    free(tmp);
     result = realloc(result, strops_length(result));
     return result;
 }

strops.h

@@ -12,7 +12,7 @@
 typedef unsigned long long ull_t;
 typedef unsigned char bool_t;
 
-char* strops_lenght(const char* string);
+ull_t strops_length(const char* string);
 char* strops_copy(const char* string);
 char* strops_copy_amount(const char* string, ull_t amount);