Fastfetch: add --no-buffer option

src/common/init.c

@@ -51,6 +51,7 @@ static void defaultConfig(FFinstance* instance)
     instance->config.pipe = false;
     instance->config.multithreading = true;
     instance->config.stat = false;
+    instance->config.noBuffer = false;
 
     ffInitTitleOptions(&instance->config.title);
     ffInitOSOptions(&instance->config.os);
@@ -175,7 +176,7 @@ static void resetConsole()
     if(ffHideCursor)
         fputs("\033[?25h", stdout);
 
-    #if defined(_WIN32) && defined(FF_ENABLE_BUFFER)
+    #if defined(_WIN32)
         fflush(stdout);
     #endif
 }
@@ -207,9 +208,7 @@ void ffStart(FFinstance* instance)
     ffHideCursor = instance->config.hideCursor && !instance->config.pipe;
 
     #ifdef _WIN32
-    #ifdef FF_ENABLE_BUFFER
-        setvbuf(stdout, NULL, _IOFBF, 4096);
-    #endif
+    if (!instance->config.noBuffer) setvbuf(stdout, NULL, _IOFBF, 4096);
     SetConsoleCtrlHandler(consoleHandler, TRUE);
     HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
     DWORD mode = 0;
@@ -217,9 +216,7 @@ void ffStart(FFinstance* instance)
     SetConsoleMode(hStdout, mode | ENABLE_PROCESSED_OUTPUT | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
     SetConsoleOutputCP(CP_UTF8);
     #else
-    #ifndef FF_ENABLE_BUFFER
-        setvbuf(stdout, NULL, _IONBF, 0);
-    #endif
+    if (instance->config.noBuffer) setvbuf(stdout, NULL, _IONBF, 0);
     struct sigaction action = { .sa_handler = exitSignalHandler };
     sigaction(SIGINT, &action, NULL);
     sigaction(SIGTERM, &action, NULL);

src/common/jsonconfig.c

@@ -266,8 +266,8 @@ static const char* printJsonConfig(FFinstance* instance)
                 printf("\033[s\033[1A\033[9999999C\033[%dD%s\033[u", len, str); // Save; Up 1; Right 9999999; Left <len>; Print <str>; Load
         }
 
-        #if defined(_WIN32) && defined(FF_ENABLE_BUFFER)
-            fflush(stdout);
+        #if defined(_WIN32)
+        if (!instance->config.noBuffer) fflush(stdout);
         #endif
     }
 
@@ -380,6 +380,8 @@ const char* ffParseDisplayJsonConfig(FFinstance* instance)
         }
         else if (strcasecmp(key, "percentType") == 0)
             config->percentType = (uint32_t) yyjson_get_uint(val);
+        else if (strcasecmp(key, "noBuffer") == 0)
+            config->noBuffer = yyjson_get_bool(val);
         else
             return "Unknown display property";
     }

src/data/config_user.txt

@@ -146,6 +146,12 @@
 # Default is IEC.
 #--binary-prefix IEC
 
+# Disable output buffer option:
+# Sets if the stdout application buffer should be disabled.
+# Must be true or false.
+# Default is false.
+#--no-buffer false
+
 # Title FQDN option:
 # Sets if the title should use the fully qualified domain name.
 # Must be true or false.

src/data/help.txt

@@ -62,7 +62,8 @@ Display options:
     --show-errors <?value>:      Print occurring errors
     --disable-linewrap <?value>: Whether to disable line wrap during the run
     --hide-cursor <?value>:      Whether to hide the cursor during the run
-    --binary-prefix <value>:     Set the binary prefix to used. Must be IEC, SI or JEDEC. Default is IEC.
+    --binary-prefix <value>:     Set the binary prefix to used. Must be IEC, SI or JEDEC. Default is IEC
+    --no-buffer <?value>:        Set if the stdout application buffer should be disabled. Default is false
 
 General module options:
     --<module>-format <format>: Set the format string to use for each specific module.

src/fastfetch.c

@@ -884,6 +884,8 @@ static void parseOption(FFinstance* instance, FFdata* data, const char* key, con
     }
     else if(strcasecmp(key, "--percent-type") == 0)
         instance->config.percentType = ffOptionParseUInt32(key, value);
+    else if(strcasecmp(key, "--no-buffer") == 0)
+        instance->config.noBuffer = ffOptionParseBoolean(value);
 
     ///////////////////////
     //Module args options//
@@ -1201,8 +1203,8 @@ int main(int argc, const char** argv)
 
     ffStart(&instance);
 
-    #if defined(_WIN32) && defined(FF_ENABLE_BUFFER)
-        fflush(stdout);
+    #if defined(_WIN32)
+        if (!instance.config.noBuffer) fflush(stdout);
     #endif
 
     if (instance.state.configDoc)
@@ -1234,8 +1236,8 @@ int main(int argc, const char** argv)
                     printf("\033[s\033[1A\033[9999999C\033[%dD%s\033[u", len, str); // Save; Up 1; Right 9999999; Left <len>; Print <str>; Load
             }
 
-            #if defined(_WIN32) && defined(FF_ENABLE_BUFFER)
-                fflush(stdout);
+            #if defined(_WIN32)
+                if (!instance.config.noBuffer) fflush(stdout);
             #endif
 
             startIndex = colonIndex + 1;

src/fastfetch.h

@@ -47,6 +47,7 @@ typedef struct FFconfig
     bool pipe; //disables logo and all escape sequences
     bool multithreading;
     bool stat;
+    bool noBuffer;
 
     // Module options that cannot be put in module option structure
     #if defined(__linux__) || defined(__FreeBSD__)