buffer.h

   1 /*
   2  * Copyright (C) 2008 Diego Hernan Borghetti.
   3  * Eco
   4  */
   5
   6 #ifndef _ECO_BUFFER_H
   7 #define _ECO_BUFFER_H
   8
   9 typedef struct _E_Line {
  10         struct _E_Line *next;
  11         struct _E_Line *prev;
  12
  13         /* line flags. */
  14         char flag;
  15
  16         /* chunk of text. */
  17         char *text;
  18
  19         /* chunk size. */
  20         int size;
  21
  22         /* memory used. */
  23         int used;
  24 } E_Line;
  25
  26 typedef struct _E_Buffer {
  27         struct _E_Buffer *next;
  28
  29         /* buffer file. */
  30         char *file;
  31
  32         /* buffer name a shortcut for show in the status line. */
  33         char *name;
  34
  35         /* line list. */
  36         E_Line *lines;
  37
  38         /* "top-level" line. */
  39         E_Line *first;
  40
  41         /* current "edit" line. */
  42         E_Line *line;
  43
  44         /* cursor position in the "current line" */
  45         short dot;
  46
  47         /* real pad for big lines. */
  48         short dot_pad;
  49
  50         /* buffer flags. */
  51         char flag;
  52
  53         /* number of lines in this buffer. */
  54         int nlines;
  55
  56         /* current line number. */
  57         int nl;
  58 } E_Buffer;
  59
  60 /* buffer->flag */
  61 #define BUFFER_FLUSH    (1<<0)
  62 #define BUFFER_CMODE    (1<<1)
  63
  64 /* buffer search mode. */
  65 #define BUFFER_SEARCH_FORWARD 0
  66 #define BUFFER_SEARCH_BACKWARD 1
  67
  68 /* set/unset buffer flags */
  69 #define BUFFER_SET(b, f) \
  70 if (!(b->flag & f)) \
  71         b->flag|= (f)
  72
  73 #define BUFFER_UNSET(b, f) \
  74 if (b->flag & f) \
  75         b->flag&= ~(f)
  76
  77 E_Buffer *e_buffer_new(char *file);
  78 void e_buffer_free(E_Buffer *bf);
  79
  80 void e_buffer_newline(E_Buffer *bf);
  81 void e_buffer_newline_first(E_Buffer *bf);
  82 void e_buffer_joinline(E_Buffer *bf);
  83 void e_buffer_splitline(E_Buffer *bf);
  84 void e_buffer_cleanline(E_Buffer *bf);
  85 void e_buffer_insert(E_Buffer *bf, int c);
  86 void e_buffer_backspace(E_Buffer *bf);
  87 void e_buffer_del(E_Buffer *bf);
  88 void e_buffer_killline(E_Buffer *bf, int cut);
  89
  90 void e_buffer_up(E_Buffer *bf);
  91 void e_buffer_down(E_Buffer *bf);
  92 void e_buffer_left(E_Buffer *bf);
  93 void e_buffer_right(E_Buffer *bf);
  94
  95 void e_buffer_goto(E_Buffer *bf, int line);
  96 void e_buffer_goto_begin(E_Buffer *bf);
  97 void e_buffer_goto_end(E_Buffer *bf);
  98 void e_buffer_bol(E_Buffer *bf);
  99 void e_buffer_eol(E_Buffer *bf);
 100 void e_buffer_scroll(E_Buffer *bf, int nline, int dir);
 101
 102 void e_buffer_search(E_Buffer *bf, char *pattern, int dir);
 103 int e_buffer_replace(E_Buffer *bf, char *pattern, char *replace);
 104
 105 #endif /* _ECO_BUFFER_H */