From 9ac06af335c5c9b2e2da041c363afa14db50bd71 Mon Sep 17 00:00:00 2001
From: jukoo <jUmarB@protonmail.com>
Date: Sat, 21 Feb 2026 13:35:30 +0000
Subject: [PATCH] a dedicated helper and  show only printable char

---
 main.c         | 21 ---------------------
 src/baseconv.c | 17 ++++++++++++++++-
 src/baseconv.h |  1 +
 src/bcvrepl.c  | 28 ++++++++++++++++------------
 src/bcvrepl.h  |  2 ++
 5 files changed, 35 insertions(+), 34 deletions(-)

diff --git a/main.c b/main.c
index 665894c..9178ed9 100644
--- a/main.c
+++ b/main.c
@@ -17,7 +17,6 @@
 #include "bcvrepl.h"
 
 void bcv_usage(unsigned char const) ;            /* [[noreturn]] */
-void bcv_guess_base(const char * __restrict__) ; /* [[noreturn]] */
 
 int main(int ac , char **av) 
 { 
@@ -95,26 +94,6 @@ int main(int ac , char **av)
   return EXIT_SUCCESS ; 
 } 
 
-
-void bcv_print(uf64_t value)
-{
-    if((__allbase_enable__ >> 32)&  0x64)
-      bcv_out(bc_dec(value), DEC);
-
-    if(__allbase_enable__ &  HEX)
-      bcv_out(bc_hex(value), HEX);
-
-    if(__allbase_enable__ & OCT)
-      bcv_out(bc_oct(value) , OCT);
-
-    if(__allbase_enable__ & BIN)
-      bcv_out(bc_bin(value), BIN); 
-
-    if(__allbase_enable__ & CHR)  
-      bcv_out(bc_chr(value), CHR) ; 
-
-}
-
 void bcv_usage(unsigned char const char_flag) 
 {
   switch(char_flag) 
diff --git a/src/baseconv.c b/src/baseconv.c
index abbf705..ec978e5 100644
--- a/src/baseconv.c
+++ b/src/baseconv.c
@@ -89,7 +89,12 @@ void bcv_print(uf64_t value)
       bcv_out(bc_bin(value), BIN); 
 
     if(__allbase_enable__ & CHR)  
-      bcv_out(bc_chr(value), CHR) ; 
+    {
+      const char *s = bc_chr(value) ;
+      if(is_printable(s)) 
+        bcv_out(s ,  CHR) ; 
+    }
+    
 
 } 
 
@@ -138,4 +143,14 @@ void bcv_guess_base(const char * restrict num)
   return ;  
 }
 
+//!NOTE : for all the different variations of the ASCII table,
+//      : Only  printable characters, represent letters, digits, punctuation marks, and a few miscellaneous symbols.
+//      : You will find almost every character on your keyboard.
+//
+//!WARNING : The extended ASCII code are not yet supported 
+static int is_printable(const char  * ascii_code) 
+{ 
+  unsigned char code = (*ascii_code& 0xff) ; 
+  return  (0x20 < code) ? ( code <  0x7f ) : 0 ;  
+}
 
diff --git a/src/baseconv.h b/src/baseconv.h
index 8a136bc..650e3ac 100644
--- a/src/baseconv.h
+++ b/src/baseconv.h
@@ -184,4 +184,5 @@ __BCX(void)   bcv_print(uf64_t value) ;
 
 __BCX(void) bcv_guess_base(const char * rawinput) ; 
 
+static int is_printable(const char *code_ascii);  
 #endif //!__BASECONV 
diff --git a/src/bcvrepl.c b/src/bcvrepl.c
index 7e435f8..a8cc58a 100644
--- a/src/bcvrepl.c
+++ b/src/bcvrepl.c
@@ -22,8 +22,8 @@ void bcrepl_shell(const char *  prompt)
    fprintf(stdout , "%s" , BCV_STARTUP_MESG) ; 
    while (proceed, ++line) 
    { 
-     //!repl_promt 
 
+     //!BCV_SUCCESS()
      apply( printf(bpf, line,  prmpt , bcrepl_symbole_prompt) , GREEN) ;  
 
      if(!(fgets(prompt_buffer ,  bcrepl_buffer_limit, stdin)))
@@ -34,9 +34,8 @@ void bcrepl_shell(const char *  prompt)
      
      if (0==strlen(prompt_buffer)) continue ; 
      bcrepl_compute(prompt_buffer) ; 
-     /* NOTICE :always clean the repl buffer */
+     
      bzero(prompt_buffer , bcrepl_buffer_limit) ; 
-
      fflush(stdin) ; 
    }
 } 
@@ -81,16 +80,8 @@ void bcrepl_compute(const char * buffer)
   { 
     value =  strtol(buffer_clone , 00 ,  10) ; 
     value ?  bcv_print(value) :  bcv_guess_base(buffer_clone) ; 
-    
-    switch(*buffer_clone & 0xff)
-    {
-      case '?':  
-      case 'h': fprintf(stdout , "%s%s\12" ,  USAGE ,  BCV_VERSION_STR); break; 
-      case '!': 
-      case 'v': fprintf(stdout , "%s\012", BCV_STARTUP_MESG) ; break ; 
-    }
+    bcrepl_show_helper(buffer_clone) ;  
      
-
     return ;  
   }
 
@@ -127,6 +118,7 @@ void bcrepl_compute(const char * buffer)
    }
    if (!out)  
      return ;  
+
    //BCV_ERR() 
    apply(printf(" |-> %s\012", out) , RED) ; 
 } 
@@ -189,3 +181,15 @@ uf64_t bcrepl_process(const char * buffer , const char ftokn)
   }
   return vtok ;
 }
+
+static void bcrepl_show_helper(const char  repl_buffer[static 1]) 
+{
+  switch( *repl_buffer  & 0xff)
+  {
+    case '?':  
+    case 'h': fprintf(stdout , "%s%s\12" ,  USAGE ,  BCV_VERSION_STR); break; 
+    case '!': 
+    case 'v': fprintf(stdout , "%s\012", BCV_STARTUP_MESG) ; break ;   
+  }
+
+}
diff --git a/src/bcvrepl.h b/src/bcvrepl.h
index c83306f..b08c5f7 100644
--- a/src/bcvrepl.h
+++ b/src/bcvrepl.h
@@ -116,4 +116,6 @@ bcvrepl_export char * bcrepl_token_search(const char * __restrict__) ;
 
 bcvrepl_export uf64_t bcrepl_process(const char  * buffer , char founded_token) ; 
 
+
+static void bcrepl_show_helper(const char  buffer [ static 1 ]) ; 
 #endif //!bcv_repl_h