xref: /openbmc/linux/tools/perf/ui/tui/util.c (revision 520da457)
1 // SPDX-License-Identifier: GPL-2.0
2 #include <signal.h>
3 #include <stdbool.h>
4 #include <string.h>
5 #include <stdlib.h>
6 #include <sys/ttydefaults.h>
7 
8 #include "../browser.h"
9 #include "../keysyms.h"
10 #include "../helpline.h"
11 #include "../ui.h"
12 #include "../util.h"
13 #include "../libslang.h"
14 
ui_browser__argv_write(struct ui_browser * browser,void * entry,int row)15 static void ui_browser__argv_write(struct ui_browser *browser,
16 				   void *entry, int row)
17 {
18 	char **arg = entry;
19 	bool current_entry = ui_browser__is_current_entry(browser, row);
20 
21 	ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
22 						       HE_COLORSET_NORMAL);
23 	ui_browser__write_nstring(browser, *arg, browser->width);
24 }
25 
popup_menu__run(struct ui_browser * menu,int * keyp)26 static int popup_menu__run(struct ui_browser *menu, int *keyp)
27 {
28 	int key;
29 
30 	if (ui_browser__show(menu, " ", "ESC: exit, ENTER|->: Select option") < 0)
31 		return -1;
32 
33 	while (1) {
34 		key = ui_browser__run(menu, 0);
35 
36 		switch (key) {
37 		case K_RIGHT:
38 		case K_ENTER:
39 			key = menu->index;
40 			break;
41 		case K_LEFT:
42 		case K_ESC:
43 		case 'q':
44 		case CTRL('c'):
45 			key = -1;
46 			break;
47 		default:
48 			if (keyp) {
49 				*keyp = key;
50 				key = menu->nr_entries;
51 				break;
52 			}
53 			continue;
54 		}
55 
56 		break;
57 	}
58 
59 	ui_browser__hide(menu);
60 	return key;
61 }
62 
ui__popup_menu(int argc,char * const argv[],int * keyp)63 int ui__popup_menu(int argc, char * const argv[], int *keyp)
64 {
65 	struct ui_browser menu = {
66 		.entries    = (void *)argv,
67 		.refresh    = ui_browser__argv_refresh,
68 		.seek	    = ui_browser__argv_seek,
69 		.write	    = ui_browser__argv_write,
70 		.nr_entries = argc,
71 	};
72 	return popup_menu__run(&menu, keyp);
73 }
74 
ui_browser__input_window(const char * title,const char * text,char * input,const char * exit_msg,int delay_secs)75 int ui_browser__input_window(const char *title, const char *text, char *input,
76 			     const char *exit_msg, int delay_secs)
77 {
78 	int x, y, len, key;
79 	int max_len = 60, nr_lines = 0;
80 	static char buf[50];
81 	const char *t;
82 
83 	t = text;
84 	while (1) {
85 		const char *sep = strchr(t, '\n');
86 
87 		if (sep == NULL)
88 			sep = strchr(t, '\0');
89 		len = sep - t;
90 		if (max_len < len)
91 			max_len = len;
92 		++nr_lines;
93 		if (*sep == '\0')
94 			break;
95 		t = sep + 1;
96 	}
97 
98 	mutex_lock(&ui__lock);
99 
100 	max_len += 2;
101 	nr_lines += 8;
102 	y = SLtt_Screen_Rows / 2 - nr_lines / 2;
103 	x = SLtt_Screen_Cols / 2 - max_len / 2;
104 
105 	SLsmg_set_color(0);
106 	SLsmg_draw_box(y, x++, nr_lines, max_len);
107 	if (title) {
108 		SLsmg_gotorc(y, x + 1);
109 		SLsmg_write_string(title);
110 	}
111 	SLsmg_gotorc(++y, x);
112 	nr_lines -= 7;
113 	max_len -= 2;
114 	SLsmg_write_wrapped_string((unsigned char *)text, y, x,
115 				   nr_lines, max_len, 1);
116 	y += nr_lines;
117 	len = 5;
118 	while (len--) {
119 		SLsmg_gotorc(y + len - 1, x);
120 		SLsmg_write_nstring(" ", max_len);
121 	}
122 	SLsmg_draw_box(y++, x + 1, 3, max_len - 2);
123 
124 	SLsmg_gotorc(y + 3, x);
125 	SLsmg_write_nstring(exit_msg, max_len);
126 	SLsmg_refresh();
127 
128 	mutex_unlock(&ui__lock);
129 
130 	x += 2;
131 	len = 0;
132 	key = ui__getch(delay_secs);
133 	while (key != K_TIMER && key != K_ENTER && key != K_ESC) {
134 		mutex_lock(&ui__lock);
135 
136 		if (key == K_BKSPC) {
137 			if (len == 0) {
138 				mutex_unlock(&ui__lock);
139 				goto next_key;
140 			}
141 			SLsmg_gotorc(y, x + --len);
142 			SLsmg_write_char(' ');
143 		} else {
144 			buf[len] = key;
145 			SLsmg_gotorc(y, x + len++);
146 			SLsmg_write_char(key);
147 		}
148 		SLsmg_refresh();
149 
150 		mutex_unlock(&ui__lock);
151 
152 		/* XXX more graceful overflow handling needed */
153 		if (len == sizeof(buf) - 1) {
154 			ui_helpline__push("maximum size of symbol name reached!");
155 			key = K_ENTER;
156 			break;
157 		}
158 next_key:
159 		key = ui__getch(delay_secs);
160 	}
161 
162 	buf[len] = '\0';
163 	strncpy(input, buf, len+1);
164 	return key;
165 }
166 
__ui__info_window(const char * title,const char * text,const char * exit_msg)167 void __ui__info_window(const char *title, const char *text, const char *exit_msg)
168 {
169 	int x, y;
170 	int max_len = 0, nr_lines = 0;
171 	const char *t;
172 
173 	t = text;
174 	while (1) {
175 		const char *sep = strchr(t, '\n');
176 		int len;
177 
178 		if (sep == NULL)
179 			sep = strchr(t, '\0');
180 		len = sep - t;
181 		if (max_len < len)
182 			max_len = len;
183 		++nr_lines;
184 		if (*sep == '\0')
185 			break;
186 		t = sep + 1;
187 	}
188 
189 	max_len += 2;
190 	nr_lines += 2;
191 	if (exit_msg)
192 		nr_lines += 2;
193 	y = SLtt_Screen_Rows / 2 - nr_lines / 2,
194 	x = SLtt_Screen_Cols / 2 - max_len / 2;
195 
196 	SLsmg_set_color(0);
197 	SLsmg_draw_box(y, x++, nr_lines, max_len);
198 	if (title) {
199 		SLsmg_gotorc(y, x + 1);
200 		SLsmg_write_string(title);
201 	}
202 	SLsmg_gotorc(++y, x);
203 	if (exit_msg)
204 		nr_lines -= 2;
205 	max_len -= 2;
206 	SLsmg_write_wrapped_string((unsigned char *)text, y, x,
207 				   nr_lines, max_len, 1);
208 	if (exit_msg) {
209 		SLsmg_gotorc(y + nr_lines - 2, x);
210 		SLsmg_write_nstring(" ", max_len);
211 		SLsmg_gotorc(y + nr_lines - 1, x);
212 		SLsmg_write_nstring(exit_msg, max_len);
213 	}
214 }
215 
ui__info_window(const char * title,const char * text)216 void ui__info_window(const char *title, const char *text)
217 {
218 	mutex_lock(&ui__lock);
219 	__ui__info_window(title, text, NULL);
220 	SLsmg_refresh();
221 	mutex_unlock(&ui__lock);
222 }
223 
ui__question_window(const char * title,const char * text,const char * exit_msg,int delay_secs)224 int ui__question_window(const char *title, const char *text,
225 			const char *exit_msg, int delay_secs)
226 {
227 	mutex_lock(&ui__lock);
228 	__ui__info_window(title, text, exit_msg);
229 	SLsmg_refresh();
230 	mutex_unlock(&ui__lock);
231 	return ui__getch(delay_secs);
232 }
233 
ui__help_window(const char * text)234 int ui__help_window(const char *text)
235 {
236 	return ui__question_window("Help", text, "Press any key...", 0);
237 }
238 
ui__dialog_yesno(const char * msg)239 int ui__dialog_yesno(const char *msg)
240 {
241 	return ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
242 }
243 
__ui__warning(const char * title,const char * format,va_list args)244 static int __ui__warning(const char *title, const char *format, va_list args)
245 {
246 	char *s;
247 
248 	if (vasprintf(&s, format, args) > 0) {
249 		int key;
250 
251 		key = ui__question_window(title, s, "Press any key...", 0);
252 		free(s);
253 		return key;
254 	}
255 
256 	fprintf(stderr, "%s\n", title);
257 	vfprintf(stderr, format, args);
258 	return K_ESC;
259 }
260 
perf_tui__error(const char * format,va_list args)261 static int perf_tui__error(const char *format, va_list args)
262 {
263 	return __ui__warning("Error:", format, args);
264 }
265 
perf_tui__warning(const char * format,va_list args)266 static int perf_tui__warning(const char *format, va_list args)
267 {
268 	return __ui__warning("Warning:", format, args);
269 }
270 
271 struct perf_error_ops perf_tui_eops = {
272 	.error		= perf_tui__error,
273 	.warning	= perf_tui__warning,
274 };
275