Merge branch 'no-way-out-if-ctrlc' into develop

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "build/linenoise-ng"]
+	path = build/linenoise-ng
+	url = git@github.com:louisrubet/linenoise-ng.git
+[submodule "linenoise-ng"]
+	path = linenoise-ng
+	url = git@github.com:louisrubet/linenoise-ng.git

CMakeLists.txt

@@ -29,25 +29,33 @@ if(CMAKE_COMPILER_IS_GNUCXX)
   set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${BASE_COMPILER_OPTIONS} -O3 -fomit-frame-pointer -s")
 endif()
 
+# custom linenoise-ng
+if(NOT EXISTS "${PROJECT_SOURCE_DIR}/linenoise-ng/.git")
+    execute_process(COMMAND git submodule init ${PROJECT_SOURCE_DIR}/linenoise-ng)
+    execute_process(COMMAND git submodule update ${PROJECT_SOURCE_DIR}/linenoise-ng)
+    execute_process(COMMAND git checkout v1.0.1-rpn WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/linenoise-ng)
+endif()
+
 # includes
-include_directories(${PROJECT_SOURCE_DIR}/src)
+include_directories(${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}/linenoise-ng/include)
 
 # build
 add_executable(
   rpn
-  src/main.cpp
-  src/object.cpp
-  src/program.cpp
+  ${PROJECT_SOURCE_DIR}/src/main.cpp
+  ${PROJECT_SOURCE_DIR}/src/object.cpp
+  ${PROJECT_SOURCE_DIR}/src/program.cpp
+  ${PROJECT_SOURCE_DIR}/linenoise-ng/src/ConvertUTF.cpp
+  ${PROJECT_SOURCE_DIR}/linenoise-ng/src/linenoise.cpp
+  ${PROJECT_SOURCE_DIR}/linenoise-ng/src/wcwidth.cpp
 )
-
-target_link_libraries(rpn liblinenoise.a)
 target_link_libraries(rpn mpfr)
 
 # man
 add_custom_target(man ALL)
 add_custom_command(
     TARGET man
-    COMMAND gzip -f -k ${CMAKE_CURRENT_SOURCE_DIR}/rpn.1 
+    COMMAND gzip -f -k ${CMAKE_CURRENT_SOURCE_DIR}/rpn.1
     OUTPUTS ${CMAKE_CURRENT_SOURCE_DIR}/rpn.1.gz
 )
 

linenoise-ng

@@ -0,0 +1 @@
+Subproject commit 32d3c3dcd65e2ce622084cd8057b25271561512e

src/constant.h

@@ -55,6 +55,7 @@ typedef enum {
     ret_internal,
     ret_deadly,
     ret_good_bye,
+    ret_abort_current_entry,
     ret_not_impl,
     ret_nop,
     ret_syntax,
@@ -65,7 +66,7 @@ typedef enum {
 
 #define RET_VALUE_STRINGS { \
         "ok", "unknown command", "missing operand", "bad operand type", "out of range", "unknown variable", "internal error, aborting", \
-        "deadly", "goodbye", "not implemented", "no operation", "syntax error", "division by zero", "runtime error" \
+        "deadly", "goodbye", "aborted current entry", "not implemented", "no operation", "syntax error", "division by zero", "runtime error" \
     }
 
 // command types

src/main.cpp

@@ -8,7 +8,7 @@
 #include <pwd.h>
 #include <linux/limits.h>
 
-// internal includes 
+// internal includes
 #include "program.hpp"
 
 static heap s_global_heap;
@@ -90,10 +90,11 @@ static void catch_signals(program* prog)
 int main(int argc, char* argv[])
 {
     int ret = 0;
-    
+    bool go_on = true;
+
     // apply default configuration
     program::apply_default();
-    
+
     // run with interactive prompt
     if (argc == 1)
     {
@@ -101,22 +102,27 @@ int main(int argc, char* argv[])
         init_interactive_rpn();
 
         // entry loop
-        for (;;)
+        while(go_on)
         {
             // make program from interactive entry
             program prog;
-            if (program::entry(prog) == ret_good_bye)
-                break;
-            else
+            switch (program::entry(prog))
             {
-                // user could stop prog with CtrlC
-                catch_signals(&prog);
-
-                // run it
-                if (prog.run(s_global_stack, s_global_heap) == ret_good_bye)
+                case ret_good_bye:
+                    go_on = false;
+                    break;
+                case ret_abort_current_entry:
+                    break;
+                default:
+                    // user could stop prog with CtrlC
+                    catch_signals(&prog);
+
+                    // run it
+                    if (prog.run(s_global_stack, s_global_heap) == ret_good_bye)
+                        break;
+                    else
+                        program::show_stack(s_global_stack);
                     break;
-                else
-                    program::show_stack(s_global_stack);
             }
         }
 
@@ -151,8 +157,8 @@ int main(int argc, char* argv[])
             program::show_stack(s_global_stack, true);
         }
     }
- 
+
     mpfr_free_cache();
- 
+
     return ret;
 }

src/parse.hpp

@@ -32,17 +32,23 @@ static ret_value parse(const char* entry, program& prog)
 static ret_value entry(program& prog)
 {
     char* entry;
+    int entry_len;
     ret_value ret;
 
     // linenoise for entry
     linenoiseSetCompletionCallback(program::entry_completion_generator);
 
     // get user entry
-    entry = linenoise(PROMPT);
+    entry = linenoise(PROMPT, &entry_len);
 
     // Ctrl-C
     if (linenoiseKeyType() == 1)
-        ret = ret_good_bye;
+    {
+        if (entry_len > 0)
+            ret = ret_abort_current_entry;
+        else
+            ret = ret_good_bye;
+    }
     else
     {
         if (entry != NULL)
@@ -162,7 +168,7 @@ static bool _cut(const char* entry, vector<string>& entries)
                                 i++;
                         }
                         else if (strncmp(&entry[i], ">>", 2) == 0)
-                        {                        
+                        {
                             if (isspace(entry[i-1]) && entry[i-2]!='>')
                                 tmp += ">>";
                             else
@@ -523,7 +529,7 @@ static bool get_complex(const string& entry, program& prog, string& remaining_en
 static bool _obj_from_string(string& entry, program& prog, string& remaining_entry)
 {
     bool ret = false;
-    
+
     remaining_entry.erase();
 
     if (get_number(entry, prog, remaining_entry))