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 struct E_File_Path;
  10
  11 typedef struct _E_Line {
  12         struct _E_Line *next;
  13         struct _E_Line *prev;
  14
  15         /* line flags. */
  16         char flag;
  17
  18         /* chunk of text. */
  19         char *text;
  20
  21         /* chunk size. */
  22         int size;
  23
  24         /* memory used. */
  25         int used;
  26 } E_Line;
  27
  28 typedef struct _E_Buffer {
  29         struct _E_Buffer *next;
  30
  31         /* file paths. */
  32         struct E_File_Path *paths;
  33
  34         /* file name or untitled */
  35         char *name;
  36
  37         /* line list. */
  38         E_Line *lines;
  39
  40         /* "top-level" line. */
  41         E_Line *first;
  42
  43         /* current "edit" line. */
  44         E_Line *line;
  45
  46         /* cursor position in the "current line" */
  47         short dot;
  48
  49         /* real pad for big lines. */
  50         short dot_pad;
  51
  52         /* buffer flags. */
  53         char flag;
  54
  55         /* number of lines in this buffer. */
  56         int nlines;
  57
  58         /* current line number. */
  59         int nl;
  60 } E_Buffer;
  61
  62 /* buffer->flag */
  63 #define BUFFER_FLUSH    (1<<0)
  64 #define BUFFER_CMODE    (1<<1)
  65 #define BUFFER_UP       (1<<2)
  66 #define BUFFER_DOWN     (1<<3)
  67
  68 /* buffer search mode. */
  69 #define BUFFER_SEARCH_FORWARD 0
  70 #define BUFFER_SEARCH_BACKWARD 1
  71
  72 /* set/unset buffer flags */
  73 #define BUFFER_SET(b, f) \
  74 if (!(b->flag & f)) \
  75         b->flag|= (f)
  76
  77 #define BUFFER_UNSET(b, f) \
  78 if (b->flag & f) \
  79         b->flag&= ~(f)
  80
  81 E_Buffer *e_buffer_new(char *file);
  82 void e_buffer_free(E_Buffer *bf);
  83
  84 void e_buffer_newline(E_Buffer *bf);
  85 void e_buffer_newline_first(E_Buffer *bf);
  86 void e_buffer_joinline(E_Buffer *bf);
  87 void e_buffer_splitline(E_Buffer *bf);
  88 void e_buffer_cleanline(E_Buffer *bf);
  89 void e_buffer_insert(E_Buffer *bf, int c);
  90 void e_buffer_backspace(E_Buffer *bf);
  91 void e_buffer_del(E_Buffer *bf);
  92 void e_buffer_killline(E_Buffer *bf, int cut);
  93
  94 void e_buffer_up(E_Buffer *bf);
  95 void e_buffer_down(E_Buffer *bf);
  96 void e_buffer_left(E_Buffer *bf);
  97 void e_buffer_right(E_Buffer *bf);
  98
  99 void e_buffer_goto(E_Buffer *bf, int line);
 100 void e_buffer_goto_begin(E_Buffer *bf);
 101 void e_buffer_goto_end(E_Buffer *bf);
 102 void e_buffer_bol(E_Buffer *bf);
 103 void e_buffer_eol(E_Buffer *bf);
 104 void e_buffer_scroll(E_Buffer *bf, int nline, int dir);
 105
 106 void e_buffer_search(E_Buffer *bf, char *pattern, int dir);
 107 int e_buffer_replace(E_Buffer *bf, char *pattern, char *replace);
 108
 109 #endif /* _ECO_BUFFER_H */