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 "util/cache.h"
3#include "util/debug.h"
4#include "ui/browser.h"
5#include "ui/keysyms.h"
6#include "ui/ui.h"
7#include "ui/util.h"
8#include "ui/libslang.h"
9#include "util/header.h"
10#include "util/session.h"
11
12#include <sys/ttydefaults.h>
13
14static void ui_browser__argv_write(struct ui_browser *browser,
15 void *entry, int row)
16{
17 char **arg = entry;
18 char *str = *arg;
19 char empty[] = " ";
20 bool current_entry = ui_browser__is_current_entry(browser, row);
21 unsigned long offset = (unsigned long)browser->priv;
22
23 if (offset >= strlen(str))
24 str = empty;
25 else
26 str = str + offset;
27
28 ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
29 HE_COLORSET_NORMAL);
30
31 ui_browser__write_nstring(browser, str, browser->width);
32}
33
34static int list_menu__run(struct ui_browser *menu)
35{
36 int key;
37 unsigned long offset;
38 static const char help[] =
39 "h/?/F1 Show this window\n"
40 "UP/DOWN/PGUP\n"
41 "PGDN/SPACE\n"
42 "LEFT/RIGHT Navigate\n"
43 "q/ESC/CTRL+C Exit browser";
44
45 if (ui_browser__show(menu, "Header information", "Press 'q' to exit") < 0)
46 return -1;
47
48 while (1) {
49 key = ui_browser__run(menu, 0);
50
51 switch (key) {
52 case K_RIGHT:
53 offset = (unsigned long)menu->priv;
54 offset += 10;
55 menu->priv = (void *)offset;
56 continue;
57 case K_LEFT:
58 offset = (unsigned long)menu->priv;
59 if (offset >= 10)
60 offset -= 10;
61 menu->priv = (void *)offset;
62 continue;
63 case K_F1:
64 case 'h':
65 case '?':
66 ui_browser__help_window(menu, help);
67 continue;
68 case K_ESC:
69 case 'q':
70 case CTRL('c'):
71 key = -1;
72 break;
73 default:
74 continue;
75 }
76
77 break;
78 }
79
80 ui_browser__hide(menu);
81 return key;
82}
83
84static int ui__list_menu(int argc, char * const argv[])
85{
86 struct ui_browser menu = {
87 .entries = (void *)argv,
88 .refresh = ui_browser__argv_refresh,
89 .seek = ui_browser__argv_seek,
90 .write = ui_browser__argv_write,
91 .nr_entries = argc,
92 };
93
94 return list_menu__run(&menu);
95}
96
97int tui__header_window(struct perf_env *env)
98{
99 int i, argc = 0;
100 char **argv;
101 struct perf_session *session;
102 char *ptr, *pos;
103 size_t size;
104 FILE *fp = open_memstream(&ptr, &size);
105
106 session = container_of(env, struct perf_session, header.env);
107 perf_header__fprintf_info(session, fp, true);
108 fclose(fp);
109
110 for (pos = ptr, argc = 0; (pos = strchr(pos, '\n')) != NULL; pos++)
111 argc++;
112
113 argv = calloc(argc + 1, sizeof(*argv));
114 if (argv == NULL)
115 goto out;
116
117 argv[0] = pos = ptr;
118 for (i = 1; (pos = strchr(pos, '\n')) != NULL; i++) {
119 *pos++ = '\0';
120 argv[i] = pos;
121 }
122
123 BUG_ON(i != argc + 1);
124
125 ui__list_menu(argc, argv);
126
127out:
128 free(argv);
129 free(ptr);
130 return 0;
131}