1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
#ifndef __GRAMSCII_H__
#define __GRAMSCII_H__
#define _POSIX_C_SOURCE 200112L
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
/** constants **/
/* modes */
#define MOVE 0x00
#define BOX 0x01
#define ARROW 0x02
#define TEXT 0x04
#define DEL 0x08
#define VIS 0x10
#define PAR 0x20
#define REM 0x40
#define TRP 0x80
/**/
/* directions */
#define DIR_N 0x00
#define DIR_R 0x01
#define DIR_U 0x02
#define DIR_D 0x04
#define DIR_L 0x08
#define DIR_HOR (DIR_R | DIR_L)
#define DIR_VER (DIR_D | DIR_U)
/**/
/** box style **/
/* rectangular box */
#define BOX_RECT 0x00
/* parallelograms */
#define BOX_PAR 0x10
/* parallelogram (leaning right) */
#define BOX_PARR 0x11
/* parallelogram (leaning left) */
#define BOX_PARL 0x12
/* trapezium */
#define BOX_TRAP 0x20
#define BOX_TRAP_U 0x24
#define BOX_TRAP_D 0x28
#define BOX_TRAP_R 0x21
#define BOX_TRAP_C 0x22
#define BOX_TRAP_L 0x23
#define BOX_TRAP_UR 0x25
#define BOX_TRAP_UC 0x26
#define BOX_TRAP_UL 0x27
#define BOX_TRAP_DL 0x29
#define BOX_TRAP_DC 0x2a
#define BOX_TRAP_DR 0x2b
#define STYLE_IS(x, y) (((x) & (y) ) == y)
/**/
#define NOFIX 0x0
#define FIX 0x1
/* markers */
#define BG ' '
#define PTR '+'
#define UND '_'
#define ARR_L '<'
#define ARR_R '>'
#define ARR_U '^'
#define ARR_D 'v'
/**/
/* global positions */
#define HOME 0x01
#define END 0x02
#define MIDDLE 0x04
/**/
/* video modes */
#define VIDEO_NRM 0
#define VIDEO_REV 7
/**/
/* undo buffer elem types */
#define PRV_STATE 0x01
#define NEW_STATE 0x02
/**/
/* file types */
#define FFILE 0x01
#define FPIPE 0x02
/** types **/
typedef struct{
int sz;/* allocated size */
int n;/* line number */
int lst;/* last visible char (before the first \0) */
char *s;
} line_t;
typedef struct{
int sz;/* allocated size */
int num;/* number of lines stored */
line_t *l;
} lineset_t;
typedef struct{
int x;
int y;
} pos_t;
/** MACROS **/
#define MIN(x,y) (x) < (y) ? (x) : (y)
#define MAX(x,y) (x) > (y) ? (x) : (y)
#define progr_x(d) ((d) == DIR_L ? -1 : (d) == DIR_R ? 1 : 0)
#define progr_y(d) ((d) == DIR_U ? -1 : (d) == DIR_D ? 1 : 0)
/** screen-related functions **/
void reset_styles();
void redraw();
int move_around(char c, FILE *fc, char global);
void check_bound(int *x, int *y);
void status_bar();
void show_cursor();
void set_cur(char c);
void update_current();
void set_xy(int _x, int _y, char c);
void draw_xy(int x, int y, char c);
char get_mark(char dir);
void set_video(int v);
char get_key(FILE *fc, char *msg);
void get_string(FILE *fc, char *msg, char *s, int sz);
void erase_box(int x1, int y1, char c);
int is_yes(char c);
void init_screen();
void erase_line(int i);
void erase_screen();
void go_to(int where);
void crop_to_nonblank();
void crop_to_rect();
void erase_blank_lines(int y1, int y2);
int _isblank(int c);
void mark_pos(FILE *fc);
/**/
/** drawing-related functions **/
int change_style(char c);
void get_text(FILE *fc);
void get_box(FILE *fc, char st);
void get_arrow(FILE *fc);
void erase(FILE *fc);
void visual_box(FILE *fc);
void paste();
void undo_change();
void redo_change();
void get_comment(FILE *fc);
/**/
/** file-related functions **/
void write_file(FILE *fc);
void check_modified(FILE *fc);
void load_file(FILE *fc);
void new_file(FILE *fc);
void read_file_at(FILE *fc, int xl, int yl);
/**/
/** line-related functions **/
void dump_lines(lineset_t ls, FILE *f);
void alloc_line(line_t *l);
void ensure_line_length(line_t *l, int len);
void ensure_num_lines(lineset_t *ls, int n);
void yank_region(int x1, int y1, int x2, int y2);
void paste_region(int x1, int y1);
void copy_lines_to_ring(int y1, int y2, int which);
void invalidate_undo();
/**/
void cleanup(int);
#endif
|
