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	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}