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[linux/fpc-iii.git] / tools / perf / ui / helpline.c
blob700fb3cfa1c739128bc0c8009039f48e1f964c93
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
5 #include "../debug.h"
6 #include "helpline.h"
7 #include "ui.h"
9 char ui_helpline__current[512];
11 static void nop_helpline__pop(void)
15 static void nop_helpline__push(const char *msg __maybe_unused)
19 static int nop_helpline__show(const char *fmt __maybe_unused,
20 va_list ap __maybe_unused)
22 return 0;
25 static struct ui_helpline default_helpline_fns = {
26 .pop = nop_helpline__pop,
27 .push = nop_helpline__push,
28 .show = nop_helpline__show,
31 struct ui_helpline *helpline_fns = &default_helpline_fns;
33 void ui_helpline__pop(void)
35 helpline_fns->pop();
38 void ui_helpline__push(const char *msg)
40 helpline_fns->push(msg);
43 void ui_helpline__vpush(const char *fmt, va_list ap)
45 char *s;
47 if (vasprintf(&s, fmt, ap) < 0)
48 vfprintf(stderr, fmt, ap);
49 else {
50 ui_helpline__push(s);
51 free(s);
55 void ui_helpline__fpush(const char *fmt, ...)
57 va_list ap;
59 va_start(ap, fmt);
60 ui_helpline__vpush(fmt, ap);
61 va_end(ap);
64 void ui_helpline__puts(const char *msg)
66 ui_helpline__pop();
67 ui_helpline__push(msg);
70 int ui_helpline__vshow(const char *fmt, va_list ap)
72 return helpline_fns->show(fmt, ap);