workbench/tools/Edit/Memory.h

   1 /**************************************************************
   2 **** memory.h: main data-types for storing file in memory  ****
   3 **** Free software under GNU license, written in 15/2/2000 ****
   4 **** © T.Pierron, C.Guillaume.                             ****
   5 **************************************************************/
   6
   7 #ifndef MEMORY_H
   8 #define MEMORY_H
   9
  10 #include <exec/types.h>
  11 #include <exec/memory.h>
  12
  13 /*** Internal representation of a line of text: ***/
  14 typedef struct _Line
  15 {
  16         struct _Line *next,*prev;       /* linked list */
  17         ULONG size, max;                                /* actual size and max before overflow */
  18         STRPTR stream;                                  /* Start of buffer */
  19         UBYTE flags;                                    /* See below */
  20 }       LINE;
  21
  22 #include "UndoRedo.h"
  23
  24 /*** Valid flags for the previous field ***/
  25 #define FIRSTSEL                        1               /* Line begins a selection */
  26 #define LASTSEL                 2               /* Line ends a selection */
  27 #define WHOLESEL                        4               /* Entire line is selected */
  28
  29 /*** Granularity of mem allocation (power of 2) ***/
  30 #define GRANULARITY                     16
  31
  32 /*** Special code ***/
  33 #define KERNEL_PANIC    (ULONG)-1
  34
  35 LINE *create_line (STRPTR,ULONG size);                                          /* Create a new line of size bytes */
  36 LINE *new_line    (LINE *);                                                                     /* Simplified line creation */
  37 void free_line    (LINE *);
  38 void trash_file   (LINE *);                                                                     /* Trash all lines of a file */
  39 BOOL add_char     (JBuf,LINE *,ULONG,UBYTE);                            /* Add a char to a line at pos */
  40 BOOL insert_str (JBuf,LINE *,ULONG,STRPTR,ULONG);       /* Like add_string, but doesn't care of \n */
  41 BOOL rem_chars    (JBuf,LINE *,ULONG s, ULONG e);               /* Remove chars between and incl. s, e (s<=e) */
  42 BOOL del_line     (JBuf,LINE **,LINE *);                                        /* Remove an line */
  43 BOOL join_lines   (JBuf,LINE *, LINE *);                                        /* Join to lines */
  44 BOOL split_line   (JBuf,LINE *,ULONG,ULONG *,BYTE);     /* Split line in two parts with indent */
  45 BOOL replace_char (LINE *,ULONG,UBYTE);                                 /* Change char at pos */
  46 ULONG size_count  (LINE *,BYTE);                                                                /* Count the bytes of a file */
  47
  48 BOOL replace_chars(LINE *,ULONG s,ULONG e,UBYTE (*change)(UBYTE));
  49
  50
  51 BOOL add_string   (JBuf, LINE *, ULONG pos, STRPTR, ULONG len, LONG *buf);
  52 BOOL add_block    (JBuf, LINE *, ULONG pos, STRPTR, ULONG len, LONG *buf);
  53 /* buf will be set to the following values at the exit:
  54 ** buf[0]: Horizontal position for the cursor
  55 ** buf[1]: Number of lines modified in the display
  56 ** buf[2]: Number of lines added to the buffer (rq: for add_string buf[1] == buf[2])
  57 */
  58
  59 #endif