#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
+#include <limits.h>
#include "private.h"
/* Upper bound to sprintf this simple type? Each 3 bits < 1 digit. */
if (err)
return err;
if (i < 0)
- return arg_bad("'%s' is negative", arg);
+ return arg_bad("'%s' is negative but destination is unsigned", arg);
*ui = i;
return NULL;
}
return err;
*ul = l;
if (l < 0)
- return arg_bad("'%s' is negative", arg);
+ return arg_bad("'%s' is negative but destination is unsigned", arg);
return NULL;
}
{
snprintf(buf, OPT_SHOW_LEN, "%lu", *ul);
}
+
+/* a helper function that multiplies out an argument's kMGTPE suffix in the
+ * long long int range, and perform checks common to all integer destinations.
+ *
+ * The base will be either 1000 or 1024, corresponding with the '_si' and
+ * '_bi' functions.
+ */
+
+static char *set_llong_with_suffix(const char *arg, long long *ll,
+ const long long base)
+{
+ char *endp;
+ if (!arg[0])
+ return arg_bad("'%s' (an empty string) is not a number", arg);
+
+ errno = 0;
+ *ll = strtoll(arg, &endp, 0);
+ if (errno)
+ return arg_bad("'%s' is out of range", arg);
+ if (*endp){
+ /*The string continues with non-digits. If there is just one
+ letter and it is a known multiplier suffix, use it.*/
+ if (endp[1])
+ return arg_bad("'%s' is not a number (suffix too long)", arg);
+ long long mul;
+ switch(*endp){
+ case 'K':
+ case 'k':
+ mul = base;
+ break;
+ case 'M':
+ case 'm':
+ mul = base * base;
+ break;
+ case 'G':
+ case 'g':
+ mul = base * base * base;
+ break;
+ case 'T':
+ case 't':
+ mul = base * base * base * base;
+ break;
+ case 'P':
+ mul = base * base * base * base * base;
+ break;
+ case 'E':
+ mul = base * base * base * base * base * base;
+ break;
+ /* This is as far as we can go in 64 bits ('E' is 2 ^ 60) */
+ default:
+ return arg_bad("'%s' is not a number (unknown suffix)",
+ arg);
+ }
+ if (*ll > LLONG_MAX / mul || *ll < LLONG_MIN / mul)
+ return arg_bad("'%s' is out of range", arg);
+ *ll *= mul;
+ }
+ return NULL;
+}
+
+/* Middle layer helpers that perform bounds checks for specific target sizes
+ * and signednesses.
+ */
+static char * set_ulonglong_with_suffix(const char *arg, unsigned long long *ull,
+ const long base)
+{
+ long long ll;
+ char *err = set_llong_with_suffix(arg, &ll, base);
+ if (err != NULL)
+ return err;
+ if (ll < 0)
+ return arg_bad("'%s' is negative but destination is unsigned", arg);
+ *ull = ll;
+ return NULL;
+}
+
+static char * set_long_with_suffix(const char *arg, long *l, const long base)
+{
+ long long ll;
+ char *err = set_llong_with_suffix(arg, &ll, base);
+ if (err != NULL) /*an error*/
+ return err;
+
+ *l = ll;
+ if (*l != ll)
+ return arg_bad("value '%s' does not fit into a long", arg);
+ return NULL;
+}
+
+static char * set_ulong_with_suffix(const char *arg, unsigned long *ul, const long base)
+{
+ long long ll;
+ char *err = set_llong_with_suffix(arg, &ll, base);
+ if (err != NULL)
+ return err;
+ if (ll < 0)
+ return arg_bad("'%s' is negative but destination is unsigned", arg);
+ *ul = ll;
+ if (*ul != ll)
+ return arg_bad("value '%s' does not fit into an unsigned long", arg);
+ return NULL;
+}
+
+static char * set_int_with_suffix(const char *arg, int *i, const long base)
+{
+ long long ll;
+ char *err = set_llong_with_suffix(arg, &ll, base);
+ if (err != NULL) /*an error*/
+ return err;
+
+ *i = ll;
+ if (*i != ll)
+ return arg_bad("value '%s' does not fit into an int", arg);
+ return NULL;
+}
+
+static char * set_uint_with_suffix(const char *arg, unsigned int *u, const long base)
+{
+ long long ll;
+ char *err = set_llong_with_suffix(arg, &ll, base);
+ if (err != NULL)
+ return err;
+ if (ll < 0)
+ return arg_bad("'%s' is negative but destination is unsigned", arg);
+ *u = ll;
+ if (*u != ll)
+ return arg_bad("value '%s' does not fit into an unsigned int", arg);
+ return NULL;
+}
+
+/*Set an integer, with decimal or binary suffixes.
+ The accepted suffixes are k/K, M/m, G/g, T, P, E.
+
+ The *_bi functions multiply the numeric value by a power of 1024, while the
+ *_si functions multiply by a power of 1000.
+ */
+
+char * opt_set_ulonglongval_bi(const char *arg, unsigned long long *ll)
+{
+ return set_ulonglong_with_suffix(arg, ll, 1024);
+}
+
+char * opt_set_ulonglongval_si(const char *arg, unsigned long long *ll)
+{
+ return set_ulonglong_with_suffix(arg, ll, 1000);
+}
+
+char * opt_set_longlongval_bi(const char *arg, long long *ll)
+{
+ return set_llong_with_suffix(arg, ll, 1024);
+}
+
+char * opt_set_longlongval_si(const char *arg, long long *ll)
+{
+ return set_llong_with_suffix(arg, ll, 1000);
+}
+
+char * opt_set_longval_bi(const char *arg, long *l)
+{
+ return set_long_with_suffix(arg, l, 1024);
+}
+
+char * opt_set_longval_si(const char *arg, long *l)
+{
+ return set_long_with_suffix(arg, l, 1000);
+}
+
+char * opt_set_ulongval_bi(const char *arg, unsigned long *ul)
+{
+ return set_ulong_with_suffix(arg, ul, 1024);
+}
+
+char * opt_set_ulongval_si(const char *arg, unsigned long *ul)
+{
+ return set_ulong_with_suffix(arg, ul, 1000);
+}
+
+char * opt_set_intval_bi(const char *arg, int *i)
+{
+ return set_int_with_suffix(arg, i, 1024);
+}
+
+char * opt_set_intval_si(const char *arg, int *i)
+{
+ return set_int_with_suffix(arg, i, 1000);
+}
+
+char * opt_set_uintval_bi(const char *arg, unsigned int *u)
+{
+ return set_uint_with_suffix(arg, u, 1024);
+}
+
+char * opt_set_uintval_si(const char *arg, unsigned int *u)
+{
+ return set_uint_with_suffix(arg, u, 1000);
+}
projects / ccan / blobdiff