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#include <sys/types.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <limits.h>
#include "int.h"
#include "girstring.h"
#include "casprintf.h"
#include "string_parser.h"
static const char *
strippedSubstring(const char * const string) {
const char * p;
for (p = &string[0]; isspace(*p); ++p);
return p;
}
void
interpretUll(const char * const string,
uint64_t * const ullP,
const char ** const errorP) {
/* strtoull() has the same disappointing weaknesses of strtoul().
See interpretUint().
*/
const char * const strippedString = strippedSubstring(string);
if (strippedString[0] == '\0')
casprintf(errorP, "Null (or all whitespace) string.");
else if (!isdigit(strippedString[0]))
casprintf(errorP, "First non-blank character is '%c', not a digit.",
strippedString[0]);
else {
/* strtoull() does a bizarre thing where if the number is out
of range, it returns a clamped value but tells you about it
by setting errno = ERANGE. If it is not out of range,
strtoull() leaves errno alone.
*/
char * tail;
errno = 0; /* So we can tell if strtoull() overflowed */
*ullP = XMLRPC_STRTOULL(strippedString, &tail, 10);
if (tail[0] != '\0')
casprintf(errorP, "Non-digit stuff in string: %s", tail);
else if (errno == ERANGE)
casprintf(errorP, "Number too large");
else
*errorP = NULL;
}
}
void
interpretLl(const char * const string,
int64_t * const llP,
const char ** const errorP) {
if (string[0] == '\0')
casprintf(errorP, "Null string.");
else {
/* strtoll() does a bizarre thing where if the number is out
of range, it returns a clamped value but tells you about it
by setting errno = ERANGE. If it is not out of range,
strtoll() leaves errno alone.
*/
char * tail;
errno = 0; /* So we can tell if strtoll() overflowed */
*llP = XMLRPC_STRTOLL(string, &tail, 10);
if (tail[0] != '\0')
casprintf(errorP, "Non-digit stuff in string: %s", tail);
else if (errno == ERANGE)
casprintf(errorP, "Number too large");
else
*errorP = NULL;
}
}
void
interpretUint(const char * const string,
unsigned int * const uintP,
const char ** const errorP) {
/* strtoul() does a lousy job of dealing with invalid numbers. A null
string is just zero; a negative number is a large positive one; a
positive (cf unsigned) number is accepted. strtoul is inconsistent
in its treatment of the tail; if there is no valid number at all,
it returns the entire string as the tail, including leading white
space and sign, which are not themselves invalid.
*/
const char * const strippedString = strippedSubstring(string);
if (strippedString[0] == '\0')
casprintf(errorP, "Null (or all whitespace) string.");
else if (!isdigit(strippedString[0]))
casprintf(errorP, "First non-blank character is '%c', not a digit.",
strippedString[0]);
else {
/* strtoul() does a bizarre thing where if the number is out
of range, it returns a clamped value but tells you about it
by setting errno = ERANGE. If it is not out of range,
strtoul() leaves errno alone.
*/
char * tail;
unsigned long ulongValue;
errno = 0; /* So we can tell if strtoul() overflowed */
ulongValue = strtoul(strippedString, &tail, 10);
if (tail[0] != '\0')
casprintf(errorP, "Non-digit stuff in string: %s", tail);
else if (errno == ERANGE)
casprintf(errorP, "Number too large");
else if (ulongValue > UINT_MAX)
casprintf(errorP, "Number too large");
else {
*uintP = ulongValue;
*errorP = NULL;
}
}
}
void
interpretInt(const char * const string,
int * const intP,
const char ** const errorP) {
if (string[0] == '\0')
casprintf(errorP, "Null string.");
else {
/* strtol() does a bizarre thing where if the number is out
of range, it returns a clamped value but tells you about it
by setting errno = ERANGE. If it is not out of range,
strtol() leaves errno alone.
*/
char * tail;
long longValue;
errno = 0; /* So we can tell if strtol() overflowed */
longValue = strtol(string, &tail, 10);
if (tail[0] != '\0')
casprintf(errorP, "Non-digit stuff in string: %s", tail);
else if (errno == ERANGE)
casprintf(errorP, "Number too large");
else if (longValue > INT_MAX)
casprintf(errorP, "Number too large");
else if (longValue < INT_MIN)
casprintf(errorP, "Number too negative");
else {
*intP = longValue;
*errorP = NULL;
}
}
}
void
interpretBinUint(const char * const string,
uint64_t * const valueP,
const char ** const errorP) {
char * tailptr;
long const mantissa_long = strtol(string, &tailptr, 10);
if (errno == ERANGE)
casprintf(errorP,
"Numeric value out of range for computation: '%s'. "
"Try a smaller number with a K, M, G, etc. suffix.",
string);
else {
int64_t const mantissa = mantissa_long;
int64_t argNumber;
*errorP = NULL; /* initial assumption */
if (*tailptr == '\0')
/* There's no suffix. A pure number */
argNumber = mantissa * 1;
else if (stripcaseeq(tailptr, "K"))
argNumber = mantissa * 1024;
else if (stripcaseeq(tailptr, "M"))
argNumber = mantissa * 1024 * 1024;
else if (stripcaseeq(tailptr, "G"))
argNumber = mantissa * 1024 * 1024 * 1024;
else if (stripcaseeq(tailptr, "T"))
argNumber = mantissa * 1024 * 1024 * 1024 * 1024;
else if (stripcaseeq(tailptr, "P"))
argNumber = mantissa * 1024 * 1024 * 1024 * 1024 * 1024;
else {
argNumber = 0; /* quiet compiler warning */
casprintf(errorP, "Garbage suffix '%s' on number", tailptr);
}
if (!*errorP) {
if (argNumber < 0)
casprintf(errorP, "Unsigned numeric value is "
"negative: %" PRId64, argNumber);
else
*valueP = (uint64_t) argNumber;
}
}
}
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