-// lowlevel.hxx -- routines to handle lowlevel compressed binary IO of
+// lowlevel.cxx -- routines to handle lowlevel compressed binary IO of
// various datatypes
//
// Shamelessly adapted from plib (plib.sourceforge.net) January 2001
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
-//
+
#include "lowlevel.hxx"
+
static int read_error = false ;
static int write_error = false ;
-int sgReadError (void) { return read_error ; }
-int sgWriteError (void) { return write_error ; }
+void sgClearReadError() { read_error = false; }
+void sgClearWriteError() { write_error = false; }
+int sgReadError() { return read_error ; }
+int sgWriteError() { return write_error ; }
void sgReadChar ( gzFile fd, char *var )
{
- if ( gzread ( fd, var, sizeof(char) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(char) ) != sizeof(char) ) {
+ read_error = true ;
+ }
}
void sgWriteChar ( gzFile fd, const char var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(char) ) == 1 ) return ;
- write_error = true ;
+ if ( gzwrite ( fd, (void *)(&var), sizeof(char) ) != sizeof(char) ) {
+ write_error = true ;
+ }
}
void sgReadFloat ( gzFile fd, float *var )
{
- if ( gzread ( fd, var, sizeof(float) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(float) ) != sizeof(float) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)var);
+ }
}
void sgWriteFloat ( gzFile fd, const float var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(float) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(float) ) != sizeof(float) ) {
+ write_error = true ;
+ }
}
void sgReadDouble ( gzFile fd, double *var )
{
- if ( gzread ( fd, var, sizeof(double) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(double) ) != sizeof(double) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned long long*)var);
+ }
}
void sgWriteDouble ( gzFile fd, const double var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(double) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned long long*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(double) ) != sizeof(double) ) {
+ write_error = true ;
+ }
}
void sgReadUInt ( gzFile fd, unsigned int *var )
{
- if ( gzread ( fd, var, sizeof(unsigned int) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(unsigned int) ) != sizeof(unsigned int) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)var);
+ }
}
void sgWriteUInt ( gzFile fd, const unsigned int var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned int) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned int) )
+ != sizeof(unsigned int) )
+ {
+ write_error = true ;
+ }
}
void sgReadInt ( gzFile fd, int *var )
{
- if ( gzread ( fd, var, sizeof(int) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(int) ) != sizeof(int) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)var);
+ }
}
void sgWriteInt ( gzFile fd, const int var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(int) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(int) ) != sizeof(int) ) {
+ write_error = true ;
+ }
}
void sgReadLong ( gzFile fd, long int *var )
{
- if ( gzread ( fd, var, sizeof(long int) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(long int) ) != sizeof(long int) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)var);
+ }
}
void sgWriteLong ( gzFile fd, const long int var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(long int) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned int*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(long int) )
+ != sizeof(long int) )
+ {
+ write_error = true ;
+ }
+}
+
+
+void sgReadLongLong ( gzFile fd, long long int *var )
+{
+ if ( gzread ( fd, var, sizeof(long long int) ) != sizeof(long long int) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned long long int*)var);
+ }
+}
+
+
+void sgWriteLongLong ( gzFile fd, const long long int var )
+{
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned long long*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(long long int) )
+ != sizeof(long long int) )
+ {
+ write_error = true ;
+ }
}
void sgReadUShort ( gzFile fd, unsigned short *var )
{
- if ( gzread ( fd, var, sizeof(unsigned short) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(unsigned short) ) != sizeof(unsigned short) ){
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned short int*)var);
+ }
}
void sgWriteUShort ( gzFile fd, const unsigned short var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned short) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned short*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned short) )
+ != sizeof(unsigned short) )
+ {
+ write_error = true ;
+ }
}
void sgReadShort ( gzFile fd, short *var )
{
- if ( gzread ( fd, var, sizeof(short) ) == 1 ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(short) ) != sizeof(short) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned short int*)var);
+ }
}
void sgWriteShort ( gzFile fd, const short var )
{
- if ( gzwrite ( fd, (void *)(&var), sizeof(short) ) == 1 ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap( (unsigned short*)&var);
+ }
+ if ( gzwrite ( fd, (void *)(&var), sizeof(short) ) != sizeof(short) ) {
+ write_error = true ;
+ }
}
void sgReadFloat ( gzFile fd, const unsigned int n, float *var )
{
- if ( gzread ( fd, var, sizeof(float) * n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(float) * n ) != (int)(sizeof(float) * n) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)var++);
+ }
+ }
}
void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(float) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ float *swab = new float[n];
+ float *ptr = swab;
+ memcpy( swab, var, sizeof(float) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(float) * n )
+ != (int)(sizeof(float) * n) )
+ {
+ write_error = true ;
+ }
}
void sgReadDouble ( gzFile fd, const unsigned int n, double *var )
{
- if ( gzread ( fd, var, sizeof(double) * n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(double) * n ) != (int)(sizeof(double) * n) ) {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned long long*)var++);
+ }
+ }
}
void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(double) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ double *swab = new double[n];
+ double *ptr = swab;
+ memcpy( swab, var, sizeof(double) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned long long*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(double) * n )
+ != (int)(sizeof(double) * n) )
+ {
+ write_error = true ;
+ }
}
-void sgReadBytes ( gzFile fd, const unsigned int n, void *var )
+void sgReadBytes ( gzFile fd, const unsigned int n, void *var )
{
- if ( n == 0)
- return;
- if ( gzread ( fd, var, n ) == 1 )
- return ;
- read_error = true ;
+ if ( n == 0) return;
+ if ( gzread ( fd, var, n ) != (int)n ) {
+ read_error = true ;
+ }
}
void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var )
{
- if ( n == 0)
- return;
- if ( gzwrite ( fd, (void *)var, n ) == 1 )
- return ;
- write_error = true ;
+ if ( n == 0) return;
+ if ( gzwrite ( fd, (void *)var, n ) != (int)n ) {
+ write_error = true ;
+ }
}
void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var )
{
- if ( gzread ( fd, var, sizeof(unsigned short) * n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(unsigned short) * n )
+ != (int)(sizeof(unsigned short) * n) )
+ {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned short int*)var++);
+ }
+ }
}
void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(unsigned short) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ unsigned short *swab = new unsigned short[n];
+ unsigned short *ptr = swab;
+ memcpy( swab, var, sizeof(unsigned short) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned short*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(unsigned short) * n )
+ != (int)(sizeof(unsigned short) * n) )
+ {
+ write_error = true ;
+ }
}
void sgReadShort ( gzFile fd, const unsigned int n, short *var )
{
- if ( gzread ( fd, var, sizeof(short) * n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(short) * n )
+ != (int)(sizeof(short) * n) )
+ {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned short int*)var++);
+ }
+ }
}
void sgWriteShort ( gzFile fd, const unsigned int n, const short *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(short) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ short *swab = new short[n];
+ short *ptr = swab;
+ memcpy( swab, var, sizeof(short) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned short*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(short) * n )
+ != (int)(sizeof(short) * n) )
+ {
+ write_error = true ;
+ }
}
void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var )
{
- if ( gzread ( fd, var, sizeof(unsigned int)* n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(unsigned int) * n )
+ != (int)(sizeof(unsigned int) * n) )
+ {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)var++);
+ }
+ }
}
void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(unsigned int) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ unsigned int *swab = new unsigned int[n];
+ unsigned int *ptr = swab;
+ memcpy( swab, var, sizeof(unsigned int) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(unsigned int) * n )
+ != (int)(sizeof(unsigned int) * n) )
+ {
+ write_error = true ;
+ }
}
void sgReadInt ( gzFile fd, const unsigned int n, int *var )
{
- if ( gzread ( fd, var, sizeof(int) * n ) == (int)n ) return ;
- read_error = true ;
+ if ( gzread ( fd, var, sizeof(int) * n )
+ != (int)(sizeof(int) * n) )
+ {
+ read_error = true ;
+ }
+ if ( sgIsBigEndian() ) {
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)var++);
+ }
+ }
}
void sgWriteInt ( gzFile fd, const unsigned int n, const int *var )
{
- if ( gzwrite ( fd, (void *)var, sizeof(int) * n ) == (int)n ) return ;
- write_error = true ;
+ if ( sgIsBigEndian() ) {
+ int *swab = new int[n];
+ int *ptr = swab;
+ memcpy( swab, var, sizeof(int) * n );
+ for ( unsigned int i = 0; i < n; ++i ) {
+ sgEndianSwap( (unsigned int*)ptr++);
+ }
+ var = swab;
+ }
+ if ( gzwrite ( fd, (void *)var, sizeof(int) * n )
+ != (int)(sizeof(int) * n) )
+ {
+ write_error = true ;
+ }
}
void sgReadString ( gzFile fd, char **var )
{
- int i ;
- char s [ MAX_ENTITY_NAME_LENGTH ] ;
+ int i ;
+ char s [ MAX_ENTITY_NAME_LENGTH ] ;
- for ( i = 0 ; i < MAX_ENTITY_NAME_LENGTH ; i++ )
- {
- int c = gzgetc ( fd ) ;
- s [ i ] = c ;
+ for ( i = 0 ; i < MAX_ENTITY_NAME_LENGTH ; i++ ) {
+ int c = gzgetc ( fd ) ;
+ s [ i ] = c ;
- if ( c == '\0' )
- break ;
- }
+ if ( c == '\0' )
+ break ;
+ }
- if ( i >= MAX_ENTITY_NAME_LENGTH-1 )
- s [ MAX_ENTITY_NAME_LENGTH-1 ] = '\0' ;
+ if ( i >= MAX_ENTITY_NAME_LENGTH-1 )
+ s [ MAX_ENTITY_NAME_LENGTH-1 ] = '\0' ;
- if ( s[0] == '\0' )
- *var = NULL ;
- else
- {
- *var = new char [ strlen(s)+1 ] ;
- strcpy ( *var, s ) ;
- }
+ if ( s[0] == '\0' )
+ *var = NULL ;
+ else {
+ *var = new char [ strlen(s)+1 ] ;
+ strcpy ( *var, s ) ;
+ }
}
void sgWriteString ( gzFile fd, const char *var )
{
- if ( var != NULL ) {
- if ( gzwrite ( fd, (void *)var, strlen(var) + 1 ) ==
- (int)(strlen(var) + 1) )
- return ;
- } else {
- gzputc( fd, 0 );
- }
+ if ( var != NULL ) {
+ if ( gzwrite ( fd, (void *)var, strlen(var) + 1 ) ==
+ (int)(strlen(var) + 1) )
+ return ;
+ } else {
+ gzputc( fd, 0 );
+ }
}
-void sgReadVec2 ( gzFile fd, sgVec2 var ) { sgReadFloat ( fd, 2, var ) ; }
-void sgWriteVec2 ( gzFile fd, const sgVec2 var ) { sgWriteFloat ( fd, 2, var ) ; }
-
-void sgReadVec3 ( gzFile fd, sgVec3 var ) { sgReadFloat ( fd, 3, var ) ; }
-void sgWriteVec3 ( gzFile fd, const sgVec3 var ) { sgWriteFloat ( fd, 3, var ) ; }
-
-void sgReaddVec3 ( gzFile fd, sgdVec3 var ) { sgReadDouble ( fd, 3, var ) ; }
-void sgWritedVec3 ( gzFile fd, const sgdVec3 var ) { sgWriteDouble ( fd, 3, var ) ; }
-
-void sgReadVec4 ( gzFile fd, sgVec4 var ) { sgReadFloat ( fd, 4, var ) ; }
-void sgWriteVec4 ( gzFile fd, const sgVec4 var ) { sgWriteFloat ( fd, 4, var ) ; }
-
-void sgReadMat4 ( gzFile fd, sgMat4 var ) { sgReadFloat ( fd, 16, (float *)var ) ; }
-void sgWriteMat4 ( gzFile fd, const sgMat4 var ) { sgWriteFloat ( fd, 16, (float *)var ) ; }
projects / simgear.git / blobdiff