vytools.h

VyTools is a C and C++ library which makes often used tasks easier.
The vytools.h header is for the C part. It contains some fixed-size basic types, often used structures, basic string and stream handling and a resizable buffer.
If compiled with a C++ compiler, all the declarations are in the vytc namespace

Contents

VytPtr Typeless pointer
VytStr C string
VytU Unsigned 32-bit integer
VytI Signed 32-bit integer
VytZ Unsigned 64-bit integer
VytF 32-bit floating point value
Vyt?Vec2 2 coordinate vector

Details

VytPtr
Typeless pointer 
VytStr
C string 
VytU
Unsigned 32-bit integer 
VytI
Signed 32-bit integer 
VytZ
Unsigned 64-bit integer 
VytF
32-bit floating point value 
struct Vyt?Vec2
2 coordinate vector Y coordinate
VYT_VEC2( t )
struct vector addition
struct vector subtraction 
struct Vyt?Rect
Rectangle Height
VYT_RECT( t )
struct Vyt?Trans2
2d transformation matrix Y coordinate shift
VYT_TRANS2( t )
VytStream
Any stream type 
VytPtr vyt_alloc( VytPtr old, VytU size )
(re)allocate memory in current frame 
void vyt_frame( bool openNew )
open new frame or close current if called with true, creates a new frame to remember allocations if called with false, frees all vyt_alloc-ed memory in the frame and destroys frame itself 
VytPtr vyt_raise( VytPtr )
raises allocation of memory to previous frame dies if there is no previous frame 
VtlMem
Resizable allocated memory 
VytU (* VytStreamOp)( VytStream stream, VytPtr mem, VytU size )
Custom read or write operation
stream Pointer to the stream
mem Pointer to data
size Number of bytes to read or write
return Number of bytes successfully read or written 
VytU vyt_fread( VytStream stream, VytPtr mem, VytU size )
fread as VytStreamOp 
VytU vyt_fread_part( VytStream stream, VytPtr mem, VytU size )
fread as VytStreamOp, can read less than full block 
VytU vyt_fwrite( VytStream stream, VytPtr mem, VytU size )
fwrite as VytStreamOp 
VytU vyt_mread( VytStream stream, VytPtr mem, VytU size )
memory copy from (VytPtr *)stream to mem 
VytU vyt_mwrite( VytStream stream, VytPtr mem, VytU size )
memory copy form mem to (VytPtr *)stream 
bool vyt_block_op( VytStream stream, VytStreamOp op, VytPtr mem, VytU size )
write or read a complete block using VytStreamOp. Keeps calling op until size is reached or 0 is returned
stream Pointer to the stream
op The read or write operation
mem Pointer to data
size Total number of bytes to write
return true if all size bytes are read or written 
bool vyt_read_skip( VytStream stream, VytStreamOp read, VytU size )
skip reading bytes. Calls read without using the data read
stream Pointer to the stream
read The read or write operation
size Total number of bytes to skip
return true if all size bytes are skipped 
vyt_ewrite( ... )
write line to std error.
... Arguments as in printf 
vyt_die( ... )
write line to std error and exit program.
... Arguments as in printf 
bool vyt_nat( VytStr s, VytU * nat )
converts string to natural number
s The string
nat Number is returned here
return true on success 
bool vyt_same( VytStr a, VytStr b )
same strings (NULL proof)
a First string
b Second string
return true if both are NULL or the two are the same 
VytStr vyt_sprintf( VytStr fmt, ... )
format string (uses static buffer)
fmt Format string
... printf arguments
return The formatted string 
VytZ vyt_stamp()
milliseconds passed since epoch 
VytU vyt_stamp_diff()
milliseconds passed since last call to vyt_stamp_diff