(#4925) - com_pipefile to create a named pipe for sending commands from other processes, patch by Chris Schwarz

code/qcommon/common.c

@@ -50,6 +50,7 @@ jmp_buf abortframe;		// an ERR_DROP occured, exit the entire frame
 
 
 FILE *debuglogfile;
+static fileHandle_t pipefile;
 static fileHandle_t logfile;
 fileHandle_t	com_journalFile;			// events are written here
 fileHandle_t	com_journalDataFile;		// config files are written here
@@ -66,6 +67,7 @@ cvar_t	*com_timedemo;
 cvar_t	*com_sv_running;
 cvar_t	*com_cl_running;
 cvar_t	*com_logfile;		// 1 = buffer log, 2 = flush after each print
+cvar_t	*com_pipefile;
 cvar_t	*com_showtrace;
 cvar_t	*com_version;
 cvar_t	*com_blood;
@@ -2768,9 +2770,36 @@ void Com_Init( char *commandLine ) {
 	Com_Printf ("Altivec support is %s\n", com_altivec->integer ? "enabled" : "disabled");
 #endif
 
+	com_pipefile = Cvar_Get( "com_pipefile", "", CVAR_ARCHIVE|CVAR_LATCH );
+	if( com_pipefile->string[0] )
+	{
+		pipefile = FS_FCreateOpenPipeFile( com_pipefile->string );
+	}
+
 	Com_Printf ("--- Common Initialization Complete ---\n");
 }
 
+/*
+===============
+Com_ReadFromPipe
+
+Read whatever is in com_pipefile, if anything, and execute it
+===============
+*/
+void Com_ReadFromPipe( void )
+{
+	char buffer[MAX_STRING_CHARS] = {""};
+	qboolean read;
+
+	if( !pipefile )
+		return;
+
+	read = FS_Read( buffer, sizeof( buffer ), pipefile );
+	if( read )
+		Cbuf_ExecuteText( EXEC_APPEND, buffer );
+}
+
+
 //==================================================================
 
 void Com_WriteConfigToFile( const char *filename ) {
@@ -3097,6 +3126,8 @@ void Com_Frame( void ) {
 		c_pointcontents = 0;
 	}
 
+	Com_ReadFromPipe( );
+
 	com_frameNumber++;
 }
 
@@ -3116,6 +3147,11 @@ void Com_Shutdown (void) {
 		com_journalFile = 0;
 	}
 
+	if( pipefile ) {
+		FS_FCloseFile( pipefile );
+		FS_HomeRemove( com_pipefile->string );
+	}
+
 }
 
 //------------------------------------------------------------------------