コード例 #1
0
ファイル: printf.c プロジェクト: kusumi/DragonFlyBSD
int
main(int argc, char *argv[])
{
	size_t len;
	int end, rval;
	char *format, *fmt, *start;

#ifndef SHELL
	setlocale(LC_ALL, "");
#endif

	/*
	 * We may not use getopt(3) because calling
	 * "printf -f%s oo" may not result in an invalid
	 * option error.
	 * However common usage and other implementations seem
	 * to indicate that we need to allow -- as a discardable
	 * option separator.
	 */
	if (argc > 1 && strcmp(argv[1], "--") == 0) {
		argc--;
		argv++;
	}

	if (argc < 2) {
		usage();
		return (1);
	}

	argv++;

#ifdef SHELL
	INTOFF;
#endif
	/*
	 * Basic algorithm is to scan the format string for conversion
	 * specifications -- once one is found, find out if the field
	 * width or precision is a '*'; if it is, gather up value.  Note,
	 * format strings are reused as necessary to use up the provided
	 * arguments, arguments of zero/null string are provided to use
	 * up the format string.
	 */
	fmt = format = *argv;
	escape(fmt, 1, &len);		/* backslash interpretation */
	rval = end = 0;
	gargv = ++argv;

	for (;;) {
		maxargv = gargv;

		myargv = gargv;
		for (myargc = 0; gargv[myargc]; myargc++)
			/* nop */;
		start = fmt;
		while (fmt < format + len) {
			if (fmt[0] == '%') {
				fwrite(start, 1, fmt - start, stdout);
				if (fmt[1] == '%') {
					/* %% prints a % */
					putchar('%');
					fmt += 2;
				} else {
					fmt = printf_doformat(fmt, &rval);
					if (fmt == NULL || fmt == end_fmt) {
#ifdef SHELL
						INTON;
#endif
						return (fmt == NULL ? 1 : rval);
					}
					end = 0;
				}
				start = fmt;
			} else
				fmt++;
			if (gargv > maxargv)
				maxargv = gargv;
		}
		gargv = maxargv;

		if (end == 1) {
			warnx("missing format character");
#ifdef SHELL
			INTON;
#endif
			return (1);
		}
		fwrite(start, 1, fmt - start, stdout);
		if (!*gargv) {
#ifdef SHELL
			INTON;
#endif
			return (rval);
		}
		/* Restart at the beginning of the format string. */
		fmt = format;
		end = 1;
	}
	/* NOTREACHED */
}
コード例 #2
0
ファイル: printf.c プロジェクト: ntposixdevs/freebsdsh
int32_t
printfcmd(int32_t argc, cstring_t argv[])
{
	size_t len;
	int32_t chopped, end, rval;
	cstring_t format;
	cstring_t fmt;
	cstring_t start;
	nextopt("");
	argc -= (int32_t)(intptr_t)(argptr - argv);
	argv = argptr;
	if (argc < 1)
	{
		usage();
		return (1);
	}
	INTOFF;
	/*
	 * Basic algorithm is to scan the format string for conversion
	 * specifications -- once one is found, find out if the field
	 * width or precision is a '*'; if it is, gather up value.  Note,
	 * format strings are reused as necessary to use up the provided
	 * arguments, arguments of zero/null string are provided to use
	 * up the format string.
	 */
	fmt = format = *argv;
	chopped = escape(fmt, 1, &len);		/* backslash interpretation */
	rval = end = 0;
	gargv = ++argv;
	for (;;)
	{
		start = fmt;
		while (fmt < format + len)
		{
			if (fmt[0] == '%')
			{
				fwrite(start, 1, fmt - start, stdout);
				if (fmt[1] == '%')
				{
					/* %% prints a % */
					putchar('%');
					fmt += 2;
				}
				else
				{
					fmt = printf_doformat(fmt, &rval);
					if (fmt == NULL)
					{
						INTON;
						return (1);
					}
					end = 0;
				}
				start = fmt;
			}
			else
				fmt++;
		}
		if (end == 1)
		{
			warnx("missing format character");
			INTON;
			return (1);
		}
		fwrite(start, 1, fmt - start, stdout);
		if (chopped || !*gargv)
		{
			INTON;
			return (rval);
		}
		/* Restart at the beginning of the format string. */
		fmt = format;
		end = 1;
	}
	/* NOTREACHED */
}
コード例 #3
0
ファイル: printf.c プロジェクト: adonis1104/freebsd
int
main(int argc, char *argv[])
{
	size_t len;
	int end, rval;
	char *format, *fmt, *start;
#ifndef SHELL
	int ch;

	(void) setlocale(LC_ALL, "");
#endif

#ifdef SHELL
	nextopt("");
	argc -= argptr - argv;
	argv = argptr;
#else
	while ((ch = getopt(argc, argv, "")) != -1)
		switch (ch) {
		case '?':
		default:
			usage();
			return (1);
		}
	argc -= optind;
	argv += optind;
#endif

	if (argc < 1) {
		usage();
		return (1);
	}

#ifdef SHELL
	INTOFF;
#endif
	/*
	 * Basic algorithm is to scan the format string for conversion
	 * specifications -- once one is found, find out if the field
	 * width or precision is a '*'; if it is, gather up value.  Note,
	 * format strings are reused as necessary to use up the provided
	 * arguments, arguments of zero/null string are provided to use
	 * up the format string.
	 */
	fmt = format = *argv;
	escape(fmt, 1, &len);		/* backslash interpretation */
	rval = end = 0;
	gargv = ++argv;

	for (;;) {
		maxargv = gargv;

		myargv = gargv;
		for (myargc = 0; gargv[myargc]; myargc++)
			/* nop */;
		start = fmt;
		while (fmt < format + len) {
			if (fmt[0] == '%') {
				fwrite(start, 1, fmt - start, stdout);
				if (fmt[1] == '%') {
					/* %% prints a % */
					putchar('%');
					fmt += 2;
				} else {
					fmt = printf_doformat(fmt, &rval);
					if (fmt == NULL || fmt == end_fmt) {
#ifdef SHELL
						INTON;
#endif
						return (fmt == NULL ? 1 : rval);
					}
					end = 0;
				}
				start = fmt;
			} else
				fmt++;
			if (gargv > maxargv)
				maxargv = gargv;
		}
		gargv = maxargv;

		if (end == 1) {
			warnx("missing format character");
#ifdef SHELL
			INTON;
#endif
			return (1);
		}
		fwrite(start, 1, fmt - start, stdout);
		if (!*gargv) {
#ifdef SHELL
			INTON;
#endif
			return (rval);
		}
		/* Restart at the beginning of the format string. */
		fmt = format;
		end = 1;
	}
	/* NOTREACHED */
}