helpline.c 1.3 KB
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#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
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#include "../debug.h"
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#include "helpline.h"
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#include "ui.h"
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#include "../util.h"
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char ui_helpline__current[512];

static void nop_helpline__pop(void)
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{
}

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static void nop_helpline__push(const char *msg __maybe_unused)
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{
}
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static int nop_helpline__show(const char *fmt __maybe_unused,
			       va_list ap __maybe_unused)
{
	return 0;
}

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static struct ui_helpline default_helpline_fns = {
	.pop	= nop_helpline__pop,
	.push	= nop_helpline__push,
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	.show	= nop_helpline__show,
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};

struct ui_helpline *helpline_fns = &default_helpline_fns;

void ui_helpline__pop(void)
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{
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	helpline_fns->pop();
}
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void ui_helpline__push(const char *msg)
{
	helpline_fns->push(msg);
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}

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void ui_helpline__vpush(const char *fmt, va_list ap)
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{
	char *s;

	if (vasprintf(&s, fmt, ap) < 0)
		vfprintf(stderr, fmt, ap);
	else {
		ui_helpline__push(s);
		free(s);
	}
}

void ui_helpline__fpush(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	ui_helpline__vpush(fmt, ap);
	va_end(ap);
}

void ui_helpline__puts(const char *msg)
{
	ui_helpline__pop();
	ui_helpline__push(msg);
}
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int ui_helpline__vshow(const char *fmt, va_list ap)
{
	return helpline_fns->show(fmt, ap);
}
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void ui_helpline__printf(const char *fmt, ...)
{
	va_list ap;

	ui_helpline__pop();
	va_start(ap, fmt);
	ui_helpline__vpush(fmt, ap);
	va_end(ap);
}