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add stringFromStreamHere()

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This commit is contained in:
ehouse 2005-03-19 21:44:09 +00:00
parent 70b45e11c5
commit af8602f63b
2 changed files with 21 additions and 3 deletions
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23
xwords4/common/strutils.c
View file

@ -98,16 +98,33 @@ signedFromStream( XWStreamCtxt* stream, XP_U16 nBits )
XP_UCHAR*
stringFromStream( MPFORMAL XWStreamCtxt* stream )
{
XP_UCHAR buf[0xFF];
XP_UCHAR* str = (XP_UCHAR*)NULL;
XP_U16 len = stream_getU8( stream );
XP_U16 len = stringFromStreamHere( stream, buf, sizeof(buf) );
if ( len > 0 ) {
str = (XP_UCHAR*)XP_MALLOC( mpool, len + 1 );
stream_getBytes( stream, str, len );
str[len] = '\0';
XP_MEMCPY( str, buf, len + 1 );
}
return str;
} /* makeStringFromStream */
XP_U16
stringFromStreamHere( XWStreamCtxt* stream, XP_UCHAR* buf, XP_U16 buflen )
{
XP_U16 len = stream_getU8( stream );
if ( len > 0 ) {
XP_ASSERT( len < buflen );
if ( len >= buflen ) {
/* better to leave stream in bad state than overwrite stack */
len = buflen - 1;
}
stream_getBytes( stream, buf, len );
buf[len] = '\0';
}
return len;
}
void
stringToStream( XWStreamCtxt* stream, XP_UCHAR* str )
{

1
xwords4/common/strutils.h
View file

@ -38,6 +38,7 @@ XP_S32 signedFromStream( XWStreamCtxt* stream, XP_U16 nBits );
void signedToStream( XWStreamCtxt* stream, XP_U16 nBits, XP_S32 num );
XP_UCHAR* stringFromStream( MPFORMAL XWStreamCtxt* stream );
XP_U16 stringFromStreamHere( XWStreamCtxt* stream, XP_UCHAR* buf, XP_U16 len );
void stringToStream( XWStreamCtxt* stream, XP_UCHAR* str );
XP_UCHAR* copyString( MPFORMAL XP_UCHAR* instr );