# HG changeset patch # User Rob Landley # Date 1353090408 21600 # Node ID 078138791b5c6d5f6ca22f01f2afdf6ad2b48b92 # Parent ca9a1d8e25310139c12971f2ef879b63c958678f Add cut from Jason Kyungwan Han. diff -r ca9a1d8e2531 -r 078138791b5c lib/lib.c --- a/lib/lib.c Fri Nov 16 00:46:39 2012 -0600 +++ b/lib/lib.c Fri Nov 16 12:26:48 2012 -0600 @@ -1099,3 +1099,22 @@ } return NULL; //not reached } + +/* + * used to get the interger value. + */ +unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange) +{ + unsigned long rvalue = 0; + char *ptr; + if(*numstr == '-' || *numstr == '+' || isspace(*numstr)) perror_exit("invalid number '%s'", numstr); + errno = 0; + rvalue = strtoul(numstr, &ptr, 10); + if(errno || numstr == ptr) perror_exit("invalid number '%s'", numstr); + if(*ptr) perror_exit("invalid number '%s'", numstr); + if(rvalue >= lowrange && rvalue <= highrange) return rvalue; + else { + perror_exit("invalid number '%s'", numstr); + return rvalue; //Not reachable; to avoid waring message. + } +} diff -r ca9a1d8e2531 -r 078138791b5c lib/lib.h --- a/lib/lib.h Fri Nov 16 00:46:39 2012 -0600 +++ b/lib/lib.h Fri Nov 16 12:26:48 2012 -0600 @@ -175,3 +175,6 @@ // du helper functions char* make_human_readable(unsigned long long size, unsigned long unit); + +// cut helper functions +unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange);