Messages in this thread Patch in this message | | | Subject | [PATCH] Allow a hyphenated range in get_options | From | Derek Fults <> | Date | Tue, 31 Oct 2006 11:25:16 -0600 |
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This allows a hyphenated range of positive numbers in the string passed to command line helper function, get_options.
Signed-off-by: Derek Fults <dfults@sgi.com>
Index: linux/lib/cmdline.c =================================================================== --- linux.orig/lib/cmdline.c 2006-09-19 22:42:06.000000000 -0500 +++ linux/lib/cmdline.c 2006-10-30 10:39:13.351641023 -0600 @@ -29,6 +29,10 @@ * 0 : no int in string * 1 : int found, no subsequent comma * 2 : int found including a subsequent comma + * -(int): int found with a subsequent hyphen to denote a range. + * The negative number is the number of integers in the range + * used to increment the counter in the while loop. + * */ int get_option (char **str, int *pint) @@ -44,7 +48,16 @@ (*str)++; return 2; } + if (**str == '-') { + int x,inc_counter= 0, upper_range = 0; + (*str)++; + upper_range = simple_strtol ((*str), NULL, 0); + inc_counter = upper_range - *pint ; + for (x=*pint; x < upper_range; x++) + *pint++ = x; + return -inc_counter; + } return 1; } @@ -55,7 +68,8 @@ * @ints: integer array * * This function parses a string containing a comma-separated - * list of integers. The parse halts when the array is + * list of integers, a hyphen-separated range of _positive_ integers, + * or a combination of both. The parse halts when the array is * full, or when no more numbers can be retrieved from the * string. * @@ -75,6 +89,11 @@ i++; if (res == 1) break; + if (res < 0) + /* Decrement the result by one to leave out the + last number in the range. The next iteration + will handle the upper number in the range */ + i += ((-res) - 1); } ints[0] = i - 1; return (char *)str; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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