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Simulate line buffering and fix the overflow bug in Com_ReadFromPipe(), patch from DevHC.

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This commit is contained in:
Zack Middleton 2011-08-05 21:45:22 +00:00
parent b9a060bfe2
commit 5d24905c8d
1 changed files with 35 additions and 5 deletions
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40
code/qcommon/common.c
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@ -2883,15 +2883,45 @@ Read whatever is in com_pipefile, if anything, and execute it
*/ */
void Com_ReadFromPipe( void ) void Com_ReadFromPipe( void )
{ {
char buffer[MAX_STRING_CHARS] = {""}; static char buf[MAX_STRING_CHARS];
qboolean read; static int accu = 0;
int read;
if( !pipefile ) if( !pipefile )
return; return;
read = FS_Read( buffer, sizeof( buffer ), pipefile ); while( ( read = FS_Read( buf + accu, sizeof( buf ) - accu - 1, pipefile ) ) > 0 )
if( read ) {
Cbuf_ExecuteText( EXEC_APPEND, buffer ); char *brk = NULL;
int i;
for( i = accu; i < accu + read; ++i )
{
if( buf[ i ] == '\0' )
buf[ i ] = '\n';
if( buf[ i ] == '\n' || buf[ i ] == '\r' )
brk = &buf[ i + 1 ];
}
buf[ accu + read ] = '\0';
accu += read;
if( brk )
{
char tmp = *brk;
*brk = '\0';
Cbuf_ExecuteText( EXEC_APPEND, buf );
*brk = tmp;
accu -= brk - buf;
memmove( buf, brk, accu + 1 );
}
else if( accu >= sizeof( buf ) - 1 ) // full
{
Cbuf_ExecuteText( EXEC_APPEND, buf );
accu = 0;
}
}
} }