+/* Licensed under GPLv2+ - see LICENSE file for details */
#include <ccan/opt/opt.h>
+#include <ccan/cast/cast.h>
+#include <inttypes.h>
#include <string.h>
+#include <stdint.h>
#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. */
/* Set a char *. */
char *opt_set_charp(const char *arg, char **p)
{
- *p = (char *)arg;
+ *p = cast_const(char *, arg);
return NULL;
}
-/* Set an integer value, various forms. Sets to 1 on arg == NULL. */
+/* Set an integer value, various forms.
+ FIXME: set to 1 on arg == NULL ? */
char *opt_set_intval(const char *arg, int *i)
{
long l;
if (err)
return err;
*i = l;
- /* Beware truncation... */
- if (*i != l)
+ /* Beware truncation, but don't generate untestable code. */
+ if (sizeof(*i) != sizeof(l) && *i != l)
return arg_bad("value '%s' does not fit into an integer", arg);
return err;
}
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;
}
{
long int l;
char *err;
-
+
err = opt_set_longval(arg, &l);
if (err)
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;
}
char *opt_version_and_exit(const char *version)
{
printf("%s\n", version);
+ /* Don't have valgrind complain! */
+ opt_free_table();
exit(0);
}
char *opt_usage_and_exit(const char *extra)
{
- printf("%s", opt_usage(opt_argv0, extra));
+ char *usage = opt_usage(opt_argv0, extra);
+ printf("%s", usage);
+ /* Don't have valgrind complain! */
+ opt_alloc.free(usage);
+ opt_free_table();
exit(0);
}
len = OPT_SHOW_LEN - 2;
strncpy(buf+1, *p, len);
buf[1+len] = '"';
+ if (len < OPT_SHOW_LEN - 2)
+ buf[2+len] = '\0';
}
-/* Set an integer value, various forms. Sets to 1 on arg == NULL. */
+/* Show an integer value, various forms. */
void opt_show_intval(char buf[OPT_SHOW_LEN], const int *i)
{
snprintf(buf, OPT_SHOW_LEN, "%i", *i);
{
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;
+ /* Beware truncation, but don't generate untestable code. */
+ if (sizeof(*l) != sizeof(ll) && *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;
+ /* Beware truncation, but don't generate untestable code. */
+ if (sizeof(*ul) != sizeof(ll) && *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);
+}
+
+/*static helpers for showing values with kMGTPE suffixes. In this case there
+ are separate but essentially identical functions for signed and unsigned
+ values, so that unsigned values greater than LLONG_MAX get suffixes.
+ */
+static void show_llong_with_suffix(char buf[OPT_SHOW_LEN], long long ll,
+ const long long base)
+{
+ const char *suffixes = "kMGTPE";
+ int i;
+ if (ll == 0){
+ /*zero is special because everything divides it (you'd get "0E")*/
+ snprintf(buf, OPT_SHOW_LEN, "0");
+ return;
+ }
+ for (i = 0; i < strlen(suffixes); i++){
+ long long tmp = ll / base;
+ if (tmp * base != ll)
+ break;
+ ll = tmp;
+ }
+ if (i == 0)
+ snprintf(buf, OPT_SHOW_LEN, "%"PRId64, (int64_t)ll);
+ else
+ snprintf(buf, OPT_SHOW_LEN, "%"PRId64"%c", (int64_t)ll, suffixes[i - 1]);
+}
+
+static void show_ullong_with_suffix(char buf[OPT_SHOW_LEN], unsigned long long ull,
+ const unsigned base)
+{
+ const char *suffixes = "kMGTPE";
+ int i;
+ if (ull == 0){
+ /*zero is special because everything divides it (you'd get "0E")*/
+ snprintf(buf, OPT_SHOW_LEN, "0");
+ return;
+ }
+ for (i = 0; i < strlen(suffixes); i++){
+ unsigned long long tmp = ull / base;
+ if (tmp * base != ull)
+ break;
+ ull = tmp;
+ }
+ if (i == 0)
+ snprintf(buf, OPT_SHOW_LEN, "%"PRIu64, (uint64_t)ull);
+ else
+ snprintf(buf, OPT_SHOW_LEN, "%"PRIu64"%c", (uint64_t)ull, suffixes[i - 1]);
+}
+
+/* _bi, signed */
+void opt_show_intval_bi(char buf[OPT_SHOW_LEN], const int *x)
+{
+ show_llong_with_suffix(buf, *x, 1024);
+}
+
+void opt_show_longval_bi(char buf[OPT_SHOW_LEN], const long *x)
+{
+ show_llong_with_suffix(buf, *x, 1024);
+}
+
+void opt_show_longlongval_bi(char buf[OPT_SHOW_LEN], const long long *x)
+{
+ show_llong_with_suffix(buf, *x, 1024);
+}
+
+/* _bi, unsigned */
+void opt_show_uintval_bi(char buf[OPT_SHOW_LEN], const unsigned int *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1024);
+}
+
+void opt_show_ulongval_bi(char buf[OPT_SHOW_LEN], const unsigned long *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1024);
+}
+
+void opt_show_ulonglongval_bi(char buf[OPT_SHOW_LEN], const unsigned long long *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1024);
+}
+
+/* _si, signed */
+void opt_show_intval_si(char buf[OPT_SHOW_LEN], const int *x)
+{
+ show_llong_with_suffix(buf, (long long) *x, 1000);
+}
+
+void opt_show_longval_si(char buf[OPT_SHOW_LEN], const long *x)
+{
+ show_llong_with_suffix(buf, (long long) *x, 1000);
+}
+
+void opt_show_longlongval_si(char buf[OPT_SHOW_LEN], const long long *x)
+{
+ show_llong_with_suffix(buf, *x, 1000);
+}
+
+/* _si, unsigned */
+void opt_show_uintval_si(char buf[OPT_SHOW_LEN], const unsigned int *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1000);
+}
+
+void opt_show_ulongval_si(char buf[OPT_SHOW_LEN], const unsigned long *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1000);
+}
+
+void opt_show_ulonglongval_si(char buf[OPT_SHOW_LEN], const unsigned long long *x)
+{
+ show_ullong_with_suffix(buf, (unsigned long long) *x, 1000);
+}
+
projects / ccan / blobdiff