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