Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include "ui/browser.h"
3#include "ui/keysyms.h"
4#include "ui/ui.h"
5#include "ui/util.h"
6#include "ui/libslang.h"
7#include "util/header.h"
8#include "util/session.h"
9
10#include <sys/ttydefaults.h>
11
12static void ui_browser__argv_write(struct ui_browser *browser,
13 void *entry, int row)
14{
15 char **arg = entry;
16 char *str = *arg;
17 char empty[] = " ";
18 bool current_entry = ui_browser__is_current_entry(browser, row);
19 unsigned long offset = (unsigned long)browser->priv;
20
21 if (offset >= strlen(str))
22 str = empty;
23 else
24 str = str + offset;
25
26 ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
27 HE_COLORSET_NORMAL);
28
29 ui_browser__write_nstring(browser, str, browser->width);
30}
31
32static int list_menu__run(struct ui_browser *menu)
33{
34 int key;
35 unsigned long offset;
36 static const char help[] =
37 "h/?/F1 Show this window\n"
38 "UP/DOWN/PGUP\n"
39 "PGDN/SPACE\n"
40 "LEFT/RIGHT Navigate\n"
41 "q/ESC/CTRL+C Exit browser";
42
43 if (ui_browser__show(menu, "Header information", "Press 'q' to exit") < 0)
44 return -1;
45
46 while (1) {
47 key = ui_browser__run(menu, 0);
48
49 switch (key) {
50 case K_RIGHT:
51 offset = (unsigned long)menu->priv;
52 offset += 10;
53 menu->priv = (void *)offset;
54 continue;
55 case K_LEFT:
56 offset = (unsigned long)menu->priv;
57 if (offset >= 10)
58 offset -= 10;
59 menu->priv = (void *)offset;
60 continue;
61 case K_F1:
62 case 'h':
63 case '?':
64 ui_browser__help_window(menu, help);
65 continue;
66 case K_ESC:
67 case 'q':
68 case CTRL('c'):
69 key = -1;
70 break;
71 default:
72 ui_browser__warn_unhandled_hotkey(menu, key, 0, ", use 'h'/'?'/F1 to see actions");
73 continue;
74 }
75
76 break;
77 }
78
79 ui_browser__hide(menu);
80 return key;
81}
82
83static int ui__list_menu(int argc, char * const argv[])
84{
85 struct ui_browser menu = {
86 .entries = (void *)argv,
87 .refresh = ui_browser__argv_refresh,
88 .seek = ui_browser__argv_seek,
89 .write = ui_browser__argv_write,
90 .nr_entries = argc,
91 };
92
93 return list_menu__run(&menu);
94}
95
96int tui__header_window(struct perf_env *env)
97{
98 int i, argc = 0;
99 char **argv;
100 struct perf_session *session;
101 char *ptr, *pos;
102 size_t size;
103 FILE *fp = open_memstream(&ptr, &size);
104
105 session = container_of(env, struct perf_session, header.env);
106 perf_header__fprintf_info(session, fp, true);
107 fclose(fp);
108
109 for (pos = ptr, argc = 0; (pos = strchr(pos, '\n')) != NULL; pos++)
110 argc++;
111
112 argv = calloc(argc + 1, sizeof(*argv));
113 if (argv == NULL)
114 goto out;
115
116 argv[0] = pos = ptr;
117 for (i = 1; (pos = strchr(pos, '\n')) != NULL; i++) {
118 *pos++ = '\0';
119 argv[i] = pos;
120 }
121
122 BUG_ON(i != argc + 1);
123
124 ui__list_menu(argc, argv);
125
126out:
127 free(argv);
128 free(ptr);
129 return 0;
130}