feat: Add function to handle tab key press and insert previous result

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(uc VERSION 1.6.0)
+project(uc VERSION 1.7.0)
 
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED True)
@@ -18,7 +18,8 @@ add_executable(uc uc.c conv_str_to_math_res.c handle_arguments.c exponent_mode.c
 target_link_libraries(uc m)
 target_link_libraries(uc ${READLINE_LIBRARY})
 target_include_directories(uc PRIVATE ${READLINE_INCLUDE_DIR})
-#configure_file(${CMAKE_CURRENT_SOURCE_DIR}/handle_arguments.c ${CMAKE_CURRENT_SOURCE_DIR}/handle_arguments.c @ONLY)
+
+# Add uc version from header of this file to function that print --version
 target_compile_definitions(uc PUBLIC UC_VERSION="${PROJECT_VERSION}")
 
 

uc.c

@@ -7,8 +7,24 @@
 #include "conv_str_to_math_res.h"
 #include "exponent_mode.h"
 
+long double previous_result = 0.0;
+
+/* Function to handle tab key press and insert previous result. */
+int insert_previous_result(int count, int key)
+{
+    if (key == '\t') { // Check if the pressed key is the tab key
+        char result_str[32]; // Buffer to store the result string
+        sprintf(result_str, "%Lf", previous_result); // Convert previous result to string and store in buffer
+        rl_insert_text(result_str); // Insert the result string at the current cursor position
+        rl_redisplay(); // Redisplay the input line with the inserted text
+        return 0; // Return 0 to indicate successful handling of the tab key
+    }
+    return rl_insert(count, key); // If not tab key, pass the arguments to the default rl_insert function
+}
+
 int main(int argc, char *argv[]) {
     handle_arguments(argc, argv);
+    rl_bind_key('\t', insert_previous_result);
 
     char *exp; // the math expression from the user.
 
@@ -39,13 +55,23 @@ int main(int argc, char *argv[]) {
                 printf("Result: %.0Lf\n", result);
                 break;
              }
+             /*
              default: {
                 long double result = conv_str_to_math_res(exp);
                 char *formatted_result = add_spaces_to_triples(result);
                 printf("Result: %s\n", formatted_result);
                 free(exp);
                 break;
              }
+             */
+             default: {
+                long double result = conv_str_to_math_res(exp);
+                previous_result = result; // Store the result for later use
+                char *formatted_result = add_spaces_to_triples(result);
+                printf("Result: %s\n", formatted_result);
+                free(exp);
+                break;
+}
          }
     }