1 #ifndef __VTERM_INTERNAL_H__
2 #define __VTERM_INTERNAL_H__
3
4 #include "vterm.h"
5
6 #include <stdarg.h>
7
8 #if defined(__GNUC__)
9 # define INTERNAL __attribute__((visibility("internal")))
10 #else
11 # define INTERNAL
12 #endif
13
14 typedef struct VTermEncoding VTermEncoding;
15
16 typedef struct {
17 VTermEncoding *enc;
18
19 // This size should be increased if required by other stateful encodings
20 char data[4*sizeof(uint32_t)];
21 } VTermEncodingInstance;
22
23 struct VTermPen
24 {
25 VTermColor fg;
26 VTermColor bg;
27 unsigned int bold:1;
28 unsigned int underline:2;
29 unsigned int italic:1;
30 unsigned int blink:1;
31 unsigned int reverse:1;
32 unsigned int strike:1;
33 unsigned int font:4; /* To store 0-9 */
34 };
35
vterm_color_equal(VTermColor a,VTermColor b)36 static inline int vterm_color_equal(VTermColor a, VTermColor b)
37 {
38 return a.red == b.red && a.green == b.green && a.blue == b.blue;
39 }
40
41 struct VTermState
42 {
43 VTerm *vt;
44
45 const VTermStateCallbacks *callbacks;
46 void *cbdata;
47
48 int rows;
49 int cols;
50
51 /* Current cursor position */
52 VTermPos pos;
53
54 int at_phantom; /* True if we're on the "81st" phantom column to defer a wraparound */
55
56 int scrollregion_top;
57 int scrollregion_bottom; /* -1 means unbounded */
58 #define SCROLLREGION_BOTTOM(state) ((state)->scrollregion_bottom > -1 ? (state)->scrollregion_bottom : (state)->rows)
59 int scrollregion_left;
60 #define SCROLLREGION_LEFT(state) ((state)->mode.leftrightmargin ? (state)->scrollregion_left : 0)
61 int scrollregion_right; /* -1 means unbounded */
62 #define SCROLLREGION_RIGHT(state) ((state)->mode.leftrightmargin && (state)->scrollregion_right > -1 ? (state)->scrollregion_right : (state)->cols)
63
64 /* Bitvector of tab stops */
65 unsigned char *tabstops;
66
67 VTermLineInfo *lineinfo;
68 #define ROWWIDTH(state,row) ((state)->lineinfo[(row)].doublewidth ? ((state)->cols / 2) : (state)->cols)
69 #define THISROWWIDTH(state) ROWWIDTH(state, (state)->pos.row)
70
71 /* Mouse state */
72 int mouse_col, mouse_row;
73 int mouse_buttons;
74 int mouse_flags;
75 enum { MOUSE_X10, MOUSE_UTF8, MOUSE_SGR, MOUSE_RXVT } mouse_protocol;
76
77 /* Last glyph output, for Unicode recombining purposes */
78 uint32_t *combine_chars;
79 size_t combine_chars_size; // Number of ELEMENTS in the above
80 int combine_width; // The width of the glyph above
81 VTermPos combine_pos; // Position before movement
82
83 struct {
84 int keypad:1;
85 int cursor:1;
86 int autowrap:1;
87 int insert:1;
88 int newline:1;
89 int cursor_visible:1;
90 int cursor_blink:1;
91 unsigned int cursor_shape:2;
92 int alt_screen:1;
93 int origin:1;
94 int screen:1;
95 int leftrightmargin:1;
96 } mode;
97
98 VTermEncodingInstance encoding[4], encoding_utf8;
99 int gl_set, gr_set, gsingle_set;
100
101 struct VTermPen pen;
102
103 VTermColor default_fg;
104 VTermColor default_bg;
105 VTermColor colors[16]; // Store the 8 ANSI and the 8 ANSI high-brights only
106
107 int fg_index;
108 int bg_index;
109 int bold_is_highbright;
110
111 unsigned int protected_cell : 1;
112
113 /* Saved state under DEC mode 1048/1049 */
114 struct {
115 VTermPos pos;
116 struct VTermPen pen;
117
118 struct {
119 int cursor_visible:1;
120 int cursor_blink:1;
121 unsigned int cursor_shape:2;
122 } mode;
123 } saved;
124 };
125
126 struct VTerm
127 {
128 VTermAllocatorFunctions *allocator;
129 void *allocdata;
130
131 int rows;
132 int cols;
133
134 struct {
135 int utf8:1;
136 int ctrl8bit:1;
137 } mode;
138
139 enum VTermParserState {
140 NORMAL,
141 CSI,
142 OSC,
143 DCS,
144 ESC,
145 ESC_IN_OSC,
146 ESC_IN_DCS,
147 } parser_state;
148 const VTermParserCallbacks *parser_callbacks;
149 void *cbdata;
150
151 /* len == malloc()ed size; cur == number of valid bytes */
152 char *strbuffer;
153 size_t strbuffer_len;
154 size_t strbuffer_cur;
155
156 char *outbuffer;
157 size_t outbuffer_len;
158 size_t outbuffer_cur;
159
160 VTermState *state;
161 VTermScreen *screen;
162 };
163
164 struct VTermEncoding {
165 void (*init) (VTermEncoding *enc, void *data);
166 void (*decode)(VTermEncoding *enc, void *data,
167 uint32_t cp[], int *cpi, int cplen,
168 const char bytes[], size_t *pos, size_t len);
169 };
170
171 typedef enum {
172 ENC_UTF8,
173 ENC_SINGLE_94
174 } VTermEncodingType;
175
176 void *vterm_allocator_malloc(VTerm *vt, size_t size);
177 void vterm_allocator_free(VTerm *vt, void *ptr);
178
179 void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len);
180 void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args);
181 void vterm_push_output_sprintf(VTerm *vt, const char *format, ...);
182 void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...);
183 void vterm_push_output_sprintf_dcs(VTerm *vt, const char *fmt, ...);
184
185 void vterm_state_free(VTermState *state);
186
187 void vterm_state_newpen(VTermState *state);
188 void vterm_state_resetpen(VTermState *state);
189 void vterm_state_setpen(VTermState *state, const long args[], int argcount);
190 int vterm_state_getpen(VTermState *state, long args[], int argcount);
191 void vterm_state_savepen(VTermState *state, int save);
192
193 enum {
194 C1_SS3 = 0x8f,
195 C1_DCS = 0x90,
196 C1_CSI = 0x9b,
197 C1_ST = 0x9c,
198 };
199
200 void vterm_state_push_output_sprintf_CSI(VTermState *vts, const char *format, ...);
201
202 void vterm_screen_free(VTermScreen *screen);
203
204 VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation);
205
206 int vterm_unicode_width(int codepoint);
207 int vterm_unicode_is_combining(int codepoint);
208
209 #endif
210