- /* parse 'h', 'l' and 'll' length modifiers */
- if (*p == 'h' || *p == 'l') {
- length_modifier = *p; p++;
- if (length_modifier == 'l' && *p == 'l') { /* double l = long long */
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- length_modifier = '2'; /* double l encoded as '2' */
-#else
- length_modifier = 'l'; /* treat it as a single 'l' */
-#endif
- p++;
- }
- }
- fmt_spec = *p;
- /* common synonyms: */
- switch (fmt_spec) {
- case 'i': fmt_spec = 'd'; break;
- case 'D': fmt_spec = 'd'; length_modifier = 'l'; break;
- case 'U': fmt_spec = 'u'; length_modifier = 'l'; break;
- case 'O': fmt_spec = 'o'; length_modifier = 'l'; break;
- default: break;
- }
- /* get parameter value, do initial processing */
- switch (fmt_spec) {
- case '%': /* % behaves similar to 's' regarding flags and field widths */
- case 'c': /* c behaves similar to 's' regarding flags and field widths */
- case 's':
- length_modifier = '\0'; /* wint_t and wchar_t not supported */
- /* the result of zero padding flag with non-numeric conversion specifier*/
- /* is undefined. Solaris and HPUX 10 does zero padding in this case, */
- /* Digital Unix and Linux does not. */
-#if !defined(SOLARIS_COMPATIBLE) && !defined(HPUX_COMPATIBLE)
- zero_padding = 0; /* turn zero padding off for string conversions */
-#endif
- str_arg_l = 1;
- switch (fmt_spec) {
- case '%':
- str_arg = p; break;
- case 'c': {
- int j = va_arg(ap, int);
- uchar_arg = (unsigned char) j; /* standard demands unsigned char */
- str_arg = (const char *) &uchar_arg;
- break;
- }
- case 's':
- str_arg = va_arg(ap, const char *);
- if (!str_arg) str_arg_l = 0;
- /* make sure not to address string beyond the specified precision !!! */
- else if (!precision_specified) str_arg_l = strlen(str_arg);
- /* truncate string if necessary as requested by precision */
- else if (precision == 0) str_arg_l = 0;
- else {
- /* memchr on HP does not like n > 2^31 !!! */
- const char *q = memchr(str_arg, '\0',
- precision <= 0x7fffffff ? precision : 0x7fffffff);
- str_arg_l = !q ? precision : (q-str_arg);
- }
- break;
- default: break;
- }
- break;
- case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': {
- /* NOTE: the u, o, x, X and p conversion specifiers imply
- the value is unsigned; d implies a signed value */
-
- int arg_sign = 0;
- /* 0 if numeric argument is zero (or if pointer is NULL for 'p'),
- +1 if greater than zero (or nonzero for unsigned arguments),
- -1 if negative (unsigned argument is never negative) */
-
- int int_arg = 0; unsigned int uint_arg = 0;
- /* only defined for length modifier h, or for no length modifiers */
-
- long int long_arg = 0; unsigned long int ulong_arg = 0;
- /* only defined for length modifier l */
-
- void *ptr_arg = NULL;
- /* pointer argument value -only defined for p conversion */
-
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- long long int long_long_arg = 0;
- unsigned long long int ulong_long_arg = 0;
- /* only defined for length modifier ll */
-#endif
- if (fmt_spec == 'p') {
- /* HPUX 10: An l, h, ll or L before any other conversion character
- * (other than d, i, u, o, x, or X) is ignored.
- * Digital Unix:
- * not specified, but seems to behave as HPUX does.
- * Solaris: If an h, l, or L appears before any other conversion
- * specifier (other than d, i, u, o, x, or X), the behavior
- * is undefined. (Actually %hp converts only 16-bits of address
- * and %llp treats address as 64-bit data which is incompatible
- * with (void *) argument on a 32-bit system).
- */
-#ifdef SOLARIS_COMPATIBLE
-# ifdef SOLARIS_BUG_COMPATIBLE
- /* keep length modifiers even if it represents 'll' */
-# else
- if (length_modifier == '2') length_modifier = '\0';
-# endif
-#else
- length_modifier = '\0';
-#endif
- ptr_arg = va_arg(ap, void *);
- if (ptr_arg != NULL) arg_sign = 1;
- } else if (fmt_spec == 'd') { /* signed */
- switch (length_modifier) {
- case '\0':
- case 'h':
- /* It is non-portable to specify a second argument of char or short
- * to va_arg, because arguments seen by the called function
- * are not char or short. C converts char and short arguments
- * to int before passing them to a function.
- */
- int_arg = va_arg(ap, int);
- if (int_arg > 0) arg_sign = 1;
- else if (int_arg < 0) arg_sign = -1;
- break;
- case 'l':
- long_arg = va_arg(ap, long int);
- if (long_arg > 0) arg_sign = 1;
- else if (long_arg < 0) arg_sign = -1;
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- long_long_arg = va_arg(ap, long long int);
- if (long_long_arg > 0) arg_sign = 1;
- else if (long_long_arg < 0) arg_sign = -1;
- break;
-#endif
- }
- } else { /* unsigned */
- switch (length_modifier) {
- case '\0':
- case 'h':
- uint_arg = va_arg(ap, unsigned int);
- if (uint_arg) arg_sign = 1;
- break;
- case 'l':
- ulong_arg = va_arg(ap, unsigned long int);
- if (ulong_arg) arg_sign = 1;
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- ulong_long_arg = va_arg(ap, unsigned long long int);
- if (ulong_long_arg) arg_sign = 1;
- break;
-#endif
- }
- }
- str_arg = tmp; str_arg_l = 0;
- /* NOTE:
- * For d, i, u, o, x, and X conversions, if precision is specified,
- * the '0' flag should be ignored. This is so with Solaris 2.6,
- * Digital UNIX 4.0, HPUX 10, Linux, FreeBSD, NetBSD; but not with Perl.
- */
-#ifndef PERL_COMPATIBLE
- if (precision_specified) zero_padding = 0;
-#endif
- if (fmt_spec == 'd') {
- if (force_sign && arg_sign >= 0)
- tmp[str_arg_l++] = space_for_positive ? ' ' : '+';
- /* leave negative numbers for sprintf to handle,
- to avoid handling tricky cases like (short int)(-32768) */
-#ifdef LINUX_COMPATIBLE
- } else if (fmt_spec == 'p' && force_sign && arg_sign > 0) {
- tmp[str_arg_l++] = space_for_positive ? ' ' : '+';
-#endif
- } else if (alternate_form) {
- if (arg_sign != 0 && (fmt_spec == 'x' || fmt_spec == 'X') )
- { tmp[str_arg_l++] = '0'; tmp[str_arg_l++] = fmt_spec; }
- /* alternate form should have no effect for p conversion, but ... */
-#ifdef HPUX_COMPATIBLE
- else if (fmt_spec == 'p'
- /* HPUX 10: for an alternate form of p conversion,
- * a nonzero result is prefixed by 0x. */
-#ifndef HPUX_BUG_COMPATIBLE
- /* Actually it uses 0x prefix even for a zero value. */
- && arg_sign != 0
-#endif
- ) { tmp[str_arg_l++] = '0'; tmp[str_arg_l++] = 'x'; }
-#endif
- }
- zero_padding_insertion_ind = str_arg_l;
- if (!precision_specified) precision = 1; /* default precision is 1 */
- if (precision == 0 && arg_sign == 0
-#if defined(HPUX_BUG_COMPATIBLE) || defined(LINUX_COMPATIBLE)
- && fmt_spec != 'p'
- /* HPUX 10 man page claims: With conversion character p the result of
- * converting a zero value with a precision of zero is a null string.
- * Actually HP returns all zeroes, and Linux returns "(nil)". */
-#endif
- ) {
- /* converted to null string */
- /* When zero value is formatted with an explicit precision 0,
- the resulting formatted string is empty (d, i, u, o, x, X, p). */
- } else {
- char f[5]; int f_l = 0;
- f[f_l++] = '%'; /* construct a simple format string for sprintf */
- if (!length_modifier) { }
- else if (length_modifier=='2') { f[f_l++] = 'l'; f[f_l++] = 'l'; }
- else f[f_l++] = length_modifier;
- f[f_l++] = fmt_spec; f[f_l++] = '\0';
- if (fmt_spec == 'p') str_arg_l += sprintf(tmp+str_arg_l, f, ptr_arg);
- else if (fmt_spec == 'd') { /* signed */
- switch (length_modifier) {
- case '\0':
- case 'h': str_arg_l+=sprintf(tmp+str_arg_l, f, int_arg); break;
- case 'l': str_arg_l+=sprintf(tmp+str_arg_l, f, long_arg); break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2': str_arg_l+=sprintf(tmp+str_arg_l,f,long_long_arg); break;
-#endif
- }
- } else { /* unsigned */
- switch (length_modifier) {
- case '\0':
- case 'h': str_arg_l+=sprintf(tmp+str_arg_l, f, uint_arg); break;
- case 'l': str_arg_l+=sprintf(tmp+str_arg_l, f, ulong_arg); break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2': str_arg_l+=sprintf(tmp+str_arg_l,f,ulong_long_arg);break;
-#endif
- }
- }
- /* include the optional minus sign and possible "0x"
- in the region before the zero padding insertion point */
- if (zero_padding_insertion_ind < str_arg_l &&
- tmp[zero_padding_insertion_ind] == '-') {
- zero_padding_insertion_ind++;
- }
- if (zero_padding_insertion_ind+1 < str_arg_l &&
- tmp[zero_padding_insertion_ind] == '0' &&
- (tmp[zero_padding_insertion_ind+1] == 'x' ||
- tmp[zero_padding_insertion_ind+1] == 'X') ) {
- zero_padding_insertion_ind += 2;
- }
- }
- { size_t num_of_digits = str_arg_l - zero_padding_insertion_ind;
- if (alternate_form && fmt_spec == 'o'
-#ifdef HPUX_COMPATIBLE /* ("%#.o",0) -> "" */
- && (str_arg_l > 0)
-#endif
-#ifdef DIGITAL_UNIX_BUG_COMPATIBLE /* ("%#o",0) -> "00" */
-#else
- /* unless zero is already the first character */
- && !(zero_padding_insertion_ind < str_arg_l
- && tmp[zero_padding_insertion_ind] == '0')
-#endif
- ) { /* assure leading zero for alternate-form octal numbers */
- if (!precision_specified || precision < num_of_digits+1) {
- /* precision is increased to force the first character to be zero,
- except if a zero value is formatted with an explicit precision
- of zero */
- precision = num_of_digits+1; precision_specified = 1;
- }
- }
- /* zero padding to specified precision? */
- if (num_of_digits < precision)
- number_of_zeros_to_pad = precision - num_of_digits;
- }
- /* zero padding to specified minimal field width? */
- if (!justify_left && zero_padding) {
- int n = min_field_width - (str_arg_l+number_of_zeros_to_pad);
- if (n > 0) number_of_zeros_to_pad += n;
- }
- break;
- }
- default: /* unrecognized conversion specifier, keep format string as-is*/
- zero_padding = 0; /* turn zero padding off for non-numeric convers. */
-#ifndef DIGITAL_UNIX_COMPATIBLE
- justify_left = 1; min_field_width = 0; /* reset flags */
-#endif
-#if defined(PERL_COMPATIBLE) || defined(LINUX_COMPATIBLE)
- /* keep the entire format string unchanged */
- str_arg = starting_p; str_arg_l = p - starting_p;
- /* well, not exactly so for Linux, which does something inbetween,
- * and I don't feel an urge to imitate it: "%+++++hy" -> "%+y" */