version 1.12, 2000/09/14 13:32:06 |
version 1.13, 2000/11/24 14:27:19 |
|
|
|
|
#include "sprite.h" |
#include "sprite.h" |
|
|
|
/* Internal data structures and functions. BUFFER is visible so |
|
* that users can allocate the memory themselves. */ |
typedef struct Buffer_ { |
typedef struct Buffer_ { |
char *buffer; /* The buffer itself. */ |
char *buffer; /* The buffer itself. */ |
char *inPtr; /* Place to write to. */ |
char *inPtr; /* Place to write to. */ |
char *endPtr; /* End of allocated space. */ |
char *endPtr; /* End of allocated space. */ |
} BUFFER; |
} BUFFER; |
|
|
typedef BUFFER *Buffer; |
typedef struct Buffer_ *Buffer; |
|
|
/* Internal support for Buf_AddChar. */ |
/* Internal support for Buf_AddChar. */ |
extern void BufOverflow __P((Buffer)); |
extern void BufOverflow __P((Buffer)); |
|
|
/* User interface */ |
/* User interface */ |
|
|
|
/* Buf_AddChars -- Add a number of chars to the buffer. */ |
|
extern void Buf_AddChars __P((Buffer, size_t, const char *)); |
|
/* Buf_Reset -- Remove all chars from a buffer. */ |
|
#define Buf_Reset(bp) ((void)((bp)->inPtr = (bp)->buffer)) |
|
/* Buf_Size -- Return the number of chars in the given buffer. |
|
* Doesn't include the null-terminating char. */ |
|
#define Buf_Size(bp) ((size_t)((bp)->inPtr - (bp)->buffer)) |
|
/* Buf_Init -- Initialize a buffer. If no initial size is given (0), |
|
* a reasonable default is used. */ |
|
extern void Buf_Init __P((Buffer, size_t)); |
|
/* Buf_Destroy -- Nuke a buffer and all its resources. */ |
|
#define Buf_Destroy(bp) (free((bp)->buffer)) |
|
/* Buf_Retrieve -- Retrieve data from a buffer, as a NULL terminated string. */ |
|
#define Buf_Retrieve(bp) (*(bp)->inPtr = '\0', (bp)->buffer) |
/* Buf_AddChar -- Add a single char to buffer. */ |
/* Buf_AddChar -- Add a single char to buffer. */ |
#define Buf_AddChar(bp, byte) \ |
#define Buf_AddChar(bp, byte) \ |
do { \ |
do { \ |
|
|
*(bp)->inPtr++ = (byte); \ |
*(bp)->inPtr++ = (byte); \ |
} while (0) |
} while (0) |
|
|
#define BUF_ERROR 256 |
|
|
|
/* Buf_AddChars -- Add a number of chars to the buffer. */ |
|
extern void Buf_AddChars __P((Buffer, size_t, const char *)); |
|
/* Buf_Reset -- Remove all chars from a buffer. */ |
|
#define Buf_Reset(bp) ((void)((bp)->inPtr = (bp)->buffer)) |
|
/* Buf_AddSpace -- Add a space to buffer. */ |
/* Buf_AddSpace -- Add a space to buffer. */ |
#define Buf_AddSpace(b) Buf_AddChar((b), ' ') |
#define Buf_AddSpace(b) Buf_AddChar((b), ' ') |
/* Buf_AddString -- Add the contents of a NULL terminated string to buffer. */ |
/* Buf_AddString -- Add the contents of a NULL terminated string to buffer. */ |
|
|
/* Buf_AddInterval -- Add characters between pointers s and e to buffer. */ |
/* Buf_AddInterval -- Add characters between pointers s and e to buffer. */ |
#define Buf_AddInterval(b, s, e) Buf_AddChars((b), (e) - (s), (s)) |
#define Buf_AddInterval(b, s, e) Buf_AddChars((b), (e) - (s), (s)) |
|
|
/* Buf_Retrieve -- Retrieve data from a buffer, as a NULL terminated string. */ |
|
#define Buf_Retrieve(bp) (*(bp)->inPtr = '\0', (bp)->buffer) |
|
|
|
/* Buf_Size -- Return the number of chars in the given buffer. |
|
* Doesn't include the null-terminating char. */ |
|
#define Buf_Size(bp) ((size_t)((bp)->inPtr - (bp)->buffer)) |
|
|
|
/* Buf_Init -- Initialize a buffer. If no initial size is given, |
|
* a reasonable default is used. */ |
|
extern void Buf_Init __P((Buffer, size_t)); |
|
/* Buf_Destroy -- Nuke a buffer and all its resources. */ |
|
extern void Buf_Destroy __P((Buffer)); |
|
/* Buf_ReplaceLastChar -- Replace the last char in a buffer. */ |
/* Buf_ReplaceLastChar -- Replace the last char in a buffer. */ |
extern void Buf_ReplaceLastChar __P((Buffer, char)); |
extern void Buf_ReplaceLastChar __P((Buffer, char)); |
|
|