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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* Styling for ui_file
Copyright (C) 2018-2019 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef UI_STYLE_H
#define UI_STYLE_H
/* Styles that can be applied to a ui_file. */
struct ui_file_style
{
/* One of the basic colors that can be handled by ANSI
terminals. */
enum basic_color
{
NONE = -1,
BLACK,
RED,
GREEN,
YELLOW,
BLUE,
MAGENTA,
CYAN,
WHITE
};
/* Representation of a terminal color. */
class color
{
public:
color (basic_color c)
: m_simple (true),
m_value (c)
{
}
color (int c)
: m_simple (true),
m_value (c)
{
gdb_assert (c >= -1 && c <= 255);
}
color (uint8_t r, uint8_t g, uint8_t b)
: m_simple (false),
m_red (r),
m_green (g),
m_blue (b)
{
}
bool operator== (const color &other) const
{
if (m_simple != other.m_simple)
return false;
if (m_simple)
return m_value == other.m_value;
return (m_red == other.m_red && m_green == other.m_green
&& m_blue == other.m_blue);
}
bool operator< (const color &other) const
{
if (m_simple != other.m_simple)
return m_simple < other.m_simple;
if (m_simple)
return m_value < other.m_value;
if (m_red < other.m_red)
return true;
if (m_red == other.m_red)
{
if (m_green < other.m_green)
return true;
if (m_green == other.m_green)
return m_blue < other.m_blue;
}
return false;
}
/* Return true if this is the "NONE" color, false otherwise. */
bool is_none () const
{
return m_simple && m_value == NONE;
}
/* Return true if this is one of the basic colors, false
otherwise. */
bool is_basic () const
{
return m_simple && m_value >= BLACK && m_value <= WHITE;
}
/* Return the value of a basic color. */
int get_value () const
{
gdb_assert (is_basic ());
return m_value;
}
/* Fill in RGB with the red/green/blue values for this color.
This may not be called for basic colors or for the "NONE"
color. */
void get_rgb (uint8_t *rgb) const;
/* Append the ANSI terminal escape sequence for this color to STR.
IS_FG indicates whether this is a foreground or background
color. Returns true if any characters were written; returns
false otherwise (which can only happen for the "NONE"
color). */
bool append_ansi (bool is_fg, std::string *str) const;
private:
bool m_simple;
int m_value;
uint8_t m_red, m_green, m_blue;
};
/* Intensity settings that are available. */
enum intensity
{
NORMAL = 0,
BOLD,
DIM
};
ui_file_style () = default;
ui_file_style (color f, color b, intensity i = NORMAL)
: m_foreground (f),
m_background (b),
m_intensity (i)
{
}
bool operator== (const ui_file_style &other) const
{
return (m_foreground == other.m_foreground
&& m_background == other.m_background
&& m_intensity == other.m_intensity
&& m_reverse == other.m_reverse);
}
bool operator!= (const ui_file_style &other) const
{
return !(*this == other);
}
/* Return the ANSI escape sequence for this style. */
std::string to_ansi () const;
/* Return true if this style specified reverse display; false
otherwise. */
bool is_reverse () const
{
return m_reverse;
}
/* Return the foreground color of this style. */
const color &get_foreground () const
{
return m_foreground;
}
/* Return the background color of this style. */
const color &get_background () const
{
return m_background;
}
/* Return the intensity of this style. */
intensity get_intensity () const
{
return m_intensity;
}
/* Parse an ANSI escape sequence in BUF, modifying this style. BUF
must begin with an ESC character. Return true if an escape
sequence was successfully parsed; false otherwise. In either
case, N_READ is updated to reflect the number of chars read from
BUF. */
bool parse (const char *buf, size_t *n_read);
private:
color m_foreground = NONE;
color m_background = NONE;
intensity m_intensity = NORMAL;
bool m_reverse = false;
};
/* Skip an ANSI escape sequence in BUF. BUF must begin with an ESC
character. Return true if an escape sequence was successfully
skipped; false otherwise. In either case, N_READ is updated to
reflect the number of chars read from BUF. */
extern bool skip_ansi_escape (const char *buf, int *n_read);
#endif /* UI_STYLE_H */
|
