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-rw-r--r--backends/platform/symbian/src/vsnprintf.h796
1 files changed, 426 insertions, 370 deletions
diff --git a/backends/platform/symbian/src/vsnprintf.h b/backends/platform/symbian/src/vsnprintf.h
index 0dd46a2359..6e75719d55 100644
--- a/backends/platform/symbian/src/vsnprintf.h
+++ b/backends/platform/symbian/src/vsnprintf.h
@@ -247,13 +247,14 @@ int symbian_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap) {
/* if (str_l < str_m) str[str_l++] = *p++; -- this would be sufficient */
/* but the following code achieves better performance for cases
* where format string is long and contains few conversions */
- const char *q = strchr(p+1,'%');
- size_t n = !q ? strlen(p) : (q-p);
+ const char *q = strchr(p + 1, '%');
+ size_t n = !q ? strlen(p) : (q - p);
if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memcpy(str+str_l, p, (n>avail?avail:n));
+ size_t avail = str_m - str_l;
+ fast_memcpy(str + str_l, p, (n > avail ? avail : n));
}
- p += n; str_l += n;
+ p += n;
+ str_l += n;
} else {
const char *starting_p;
size_t min_field_width = 0, precision = 0;
@@ -265,398 +266,453 @@ int symbian_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap) {
char tmp[32];/* temporary buffer for simple numeric->string conversion */
const char *str_arg; /* string address in case of string argument */
- size_t str_arg_l; /* natural field width of arg without padding
+ size_t str_arg_l; /* natural field width of arg without padding
and sign */
- unsigned char uchar_arg;
- /* unsigned char argument value - only defined for c conversion.
- N.B. standard explicitly states the char argument for
- the c conversion is unsigned */
+ unsigned char uchar_arg;
+ /* unsigned char argument value - only defined for c conversion.
+ N.B. standard explicitly states the char argument for
+ the c conversion is unsigned */
- size_t number_of_zeros_to_pad = 0;
- /* number of zeros to be inserted for numeric conversions
- as required by the precision or minimal field width */
+ size_t number_of_zeros_to_pad = 0;
+ /* number of zeros to be inserted for numeric conversions
+ as required by the precision or minimal field width */
- size_t zero_padding_insertion_ind = 0;
- /* index into tmp where zero padding is to be inserted */
+ size_t zero_padding_insertion_ind = 0;
+ /* index into tmp where zero padding is to be inserted */
- char fmt_spec = '\0';
- /* current conversion specifier character */
+ char fmt_spec = '\0';
+ /* current conversion specifier character */
- str_arg = credits;/* just to make compiler happy (defined but not used)*/
- str_arg = NULL;
- starting_p = p; p++; /* skip '%' */
- /* parse flags */
- while (*p == '0' || *p == '-' || *p == '+' ||
- *p == ' ' || *p == '#' || *p == '\'') {
- switch (*p) {
- case '0': zero_padding = 1; break;
- case '-': justify_left = 1; break;
- case '+': force_sign = 1; space_for_positive = 0; break;
- case ' ': force_sign = 1;
- /* If both the ' ' and '+' flags appear, the ' ' flag should be ignored */
- break;
- case '#': alternate_form = 1; break;
- case '\'': break;
- }
- p++;
- }
- /* If the '0' and '-' flags both appear, the '0' flag should be ignored. */
+ str_arg = credits;/* just to make compiler happy (defined but not used)*/
+ str_arg = NULL;
+ starting_p = p;
+ p++; /* skip '%' */
+ /* parse flags */
+ while (*p == '0' || *p == '-' || *p == '+' ||
+ *p == ' ' || *p == '#' || *p == '\'') {
+ switch (*p) {
+ case '0':
+ zero_padding = 1;
+ break;
+ case '-':
+ justify_left = 1;
+ break;
+ case '+':
+ force_sign = 1;
+ space_for_positive = 0;
+ break;
+ case ' ':
+ force_sign = 1;
+ /* If both the ' ' and '+' flags appear, the ' ' flag should be ignored */
+ break;
+ case '#':
+ alternate_form = 1;
+ break;
+ case '\'':
+ break;
+ }
+ p++;
+ }
+ /* If the '0' and '-' flags both appear, the '0' flag should be ignored. */
- /* parse field width */
- if (*p == '*') {
- int j;
- p++; j = va_arg(ap, int);
- if (j >= 0) min_field_width = j;
- else { min_field_width = -j; justify_left = 1; }
- } else if (isdigit((int)(*p))) {
- /* size_t could be wider than unsigned int;
- make sure we treat argument like common implementations do */
- unsigned int uj = *p++ - '0';
- while (isdigit((int)(*p))) uj = 10*uj + (unsigned int)(*p++ - '0');
- min_field_width = uj;
- }
- /* parse precision */
- if (*p == '.') {
- p++; precision_specified = 1;
- if (*p == '*') {
- int j = va_arg(ap, int);
- p++;
- if (j >= 0) precision = j;
- else {
- precision_specified = 0; precision = 0;
- /* NOTE:
- * Solaris 2.6 man page claims that in this case the precision
- * should be set to 0. Digital Unix 4.0, HPUX 10 and BSD man page
- * claim that this case should be treated as unspecified precision,
- * which is what we do here.
- */
- }
- } else if (isdigit((int)(*p))) {
- /* size_t could be wider than unsigned int;
- make sure we treat argument like common implementations do */
- unsigned int uj = *p++ - '0';
- while (isdigit((int)(*p))) uj = 10*uj + (unsigned int)(*p++ - '0');
- precision = uj;
- }
- }
- /* 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 */
+ /* parse field width */
+ if (*p == '*') {
+ int j;
+ p++;
+ j = va_arg(ap, int);
+ if (j >= 0) min_field_width = j;
+ else { min_field_width = -j; justify_left = 1; }
+ } else if (isdigit((int)(*p))) {
+ /* size_t could be wider than unsigned int;
+ make sure we treat argument like common implementations do */
+ unsigned int uj = *p++ - '0';
+ while (isdigit((int)(*p))) uj = 10 * uj + (unsigned int)(*p++ - '0');
+ min_field_width = uj;
+ }
+ /* parse precision */
+ if (*p == '.') {
+ p++;
+ precision_specified = 1;
+ if (*p == '*') {
+ int j = va_arg(ap, int);
+ p++;
+ if (j >= 0) precision = j;
+ else {
+ precision_specified = 0;
+ precision = 0;
+ /* NOTE:
+ * Solaris 2.6 man page claims that in this case the precision
+ * should be set to 0. Digital Unix 4.0, HPUX 10 and BSD man page
+ * claim that this case should be treated as unspecified precision,
+ * which is what we do here.
+ */
+ }
+ } else if (isdigit((int)(*p))) {
+ /* size_t could be wider than unsigned int;
+ make sure we treat argument like common implementations do */
+ unsigned int uj = *p++ - '0';
+ while (isdigit((int)(*p))) uj = 10 * uj + (unsigned int)(*p++ - '0');
+ precision = uj;
+ }
+ }
+ /* 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' */
+ length_modifier = '2'; /* double l encoded as '2' */
#else
- length_modifier = 'l'; /* treat it as a single 'l' */
+ 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. */
- zero_padding = 0; /* turn zero padding off for string conversions */
- 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 = (const char*) 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 */
+ 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. */
+ zero_padding = 0; /* turn zero padding off for string conversions */
+ 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 = (const char*) 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 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 */
+ 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 */
+ 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 */
+ 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 */
+ 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).
- */
- length_modifier = '\0';
- 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;
+ 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).
+ */
+ length_modifier = '\0';
+ 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;
+ 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;
+ }
+ } 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;
+ 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.
- */
- if (precision_specified) zero_padding = 0;
- 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) */
- } 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 ... */
- }
- zero_padding_insertion_ind = str_arg_l;
- if (!precision_specified) precision = 1; /* default precision is 1 */
- if (precision == 0 && arg_sign == 0
- ) {
- /* 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;
+ }
+ }
+ 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.
+ */
+ if (precision_specified) zero_padding = 0;
+ 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) */
+ } 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 ... */
+ }
+ zero_padding_insertion_ind = str_arg_l;
+ if (!precision_specified) precision = 1; /* default precision is 1 */
+ if (precision == 0 && arg_sign == 0
+ ) {
+ /* 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;
+ 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;
+ }
+ } 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;
+ 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'
- /* unless zero is already the first character */
- && !(zero_padding_insertion_ind < str_arg_l
- && tmp[zero_padding_insertion_ind] == '0')
- ) { /* 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. */
- justify_left = 1; min_field_width = 0; /* reset flags */
- /* discard the unrecognized conversion, just keep *
- * the unrecognized conversion character */
- str_arg = p; str_arg_l = 0;
- if (*p) str_arg_l++; /* include invalid conversion specifier unchanged
+ }
+ }
+ /* 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'
+ /* unless zero is already the first character */
+ && !(zero_padding_insertion_ind < str_arg_l
+ && tmp[zero_padding_insertion_ind] == '0')
+ ) { /* 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. */
+ justify_left = 1;
+ min_field_width = 0; /* reset flags */
+ /* discard the unrecognized conversion, just keep *
+ * the unrecognized conversion character */
+ str_arg = p;
+ str_arg_l = 0;
+ if (*p) str_arg_l++; /* include invalid conversion specifier unchanged
if not at end-of-string */
- break;
- }
- if (*p) p++; /* step over the just processed conversion specifier */
- /* insert padding to the left as requested by min_field_width;
- this does not include the zero padding in case of numerical conversions*/
- if (!justify_left) { /* left padding with blank or zero */
- int n = min_field_width - (str_arg_l+number_of_zeros_to_pad);
- if (n > 0) {
- if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memset(str+str_l, (zero_padding?'0':' '), (n>avail?avail:n));
- }
- str_l += n;
- }
- }
- /* zero padding as requested by the precision or by the minimal field width
- * for numeric conversions required? */
- if (number_of_zeros_to_pad <= 0) {
- /* will not copy first part of numeric right now, *
- * force it to be copied later in its entirety */
- zero_padding_insertion_ind = 0;
- } else {
- /* insert first part of numerics (sign or '0x') before zero padding */
- int n = zero_padding_insertion_ind;
- if (n > 0) {
- if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memcpy(str+str_l, str_arg, (n>avail?avail:n));
- }
- str_l += n;
- }
- /* insert zero padding as requested by the precision or min field width */
- n = number_of_zeros_to_pad;
- if (n > 0) {
- if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memset(str+str_l, '0', (n>avail?avail:n));
- }
- str_l += n;
- }
- }
- /* insert formatted string
- * (or as-is conversion specifier for unknown conversions) */
- { int n = str_arg_l - zero_padding_insertion_ind;
- if (n > 0) {
- if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memcpy(str+str_l, str_arg+zero_padding_insertion_ind,
- (n>avail?avail:n));
- }
- str_l += n;
- }
- }
- /* insert right padding */
- if (justify_left) { /* right blank padding to the field width */
- int n = min_field_width - (str_arg_l+number_of_zeros_to_pad);
- if (n > 0) {
- if (str_l < str_m) {
- size_t avail = str_m-str_l;
- fast_memset(str+str_l, ' ', (n>avail?avail:n));
- }
- str_l += n;
- }
- }
- }
- }
- if (str_m > 0) { /* make sure the string is null-terminated
+ break;
+ }
+ if (*p) p++; /* step over the just processed conversion specifier */
+ /* insert padding to the left as requested by min_field_width;
+ this does not include the zero padding in case of numerical conversions*/
+ if (!justify_left) { /* left padding with blank or zero */
+ int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
+ if (n > 0) {
+ if (str_l < str_m) {
+ size_t avail = str_m - str_l;
+ fast_memset(str + str_l, (zero_padding ? '0' : ' '), (n > avail ? avail : n));
+ }
+ str_l += n;
+ }
+ }
+ /* zero padding as requested by the precision or by the minimal field width
+ * for numeric conversions required? */
+ if (number_of_zeros_to_pad <= 0) {
+ /* will not copy first part of numeric right now, *
+ * force it to be copied later in its entirety */
+ zero_padding_insertion_ind = 0;
+ } else {
+ /* insert first part of numerics (sign or '0x') before zero padding */
+ int n = zero_padding_insertion_ind;
+ if (n > 0) {
+ if (str_l < str_m) {
+ size_t avail = str_m - str_l;
+ fast_memcpy(str + str_l, str_arg, (n > avail ? avail : n));
+ }
+ str_l += n;
+ }
+ /* insert zero padding as requested by the precision or min field width */
+ n = number_of_zeros_to_pad;
+ if (n > 0) {
+ if (str_l < str_m) {
+ size_t avail = str_m - str_l;
+ fast_memset(str + str_l, '0', (n > avail ? avail : n));
+ }
+ str_l += n;
+ }
+ }
+ /* insert formatted string
+ * (or as-is conversion specifier for unknown conversions) */
+ {
+ int n = str_arg_l - zero_padding_insertion_ind;
+ if (n > 0) {
+ if (str_l < str_m) {
+ size_t avail = str_m - str_l;
+ fast_memcpy(str + str_l, str_arg + zero_padding_insertion_ind,
+ (n > avail ? avail : n));
+ }
+ str_l += n;
+ }
+ }
+ /* insert right padding */
+ if (justify_left) { /* right blank padding to the field width */
+ int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
+ if (n > 0) {
+ if (str_l < str_m) {
+ size_t avail = str_m - str_l;
+ fast_memset(str + str_l, ' ', (n > avail ? avail : n));
+ }
+ str_l += n;
+ }
+ }
+ }
+ }
+ if (str_m > 0) { /* make sure the string is null-terminated
even at the expense of overwriting the last character
(shouldn't happen, but just in case) */
- str[str_l <= str_m-1 ? str_l : str_m-1] = '\0';
- }
- /* Return the number of characters formatted (excluding trailing null
- * character), that is, the number of characters that would have been
- * written to the buffer if it were large enough.
- *
- * The value of str_l should be returned, but str_l is of unsigned type
- * size_t, and snprintf is int, possibly leading to an undetected
- * integer overflow, resulting in a negative return value, which is illegal.
- * Both XSH5 and ISO C99 (at least the draft) are silent on this issue.
- * Should errno be set to EOVERFLOW and EOF returned in this case???
- */
- return (int) str_l;
+ str[str_l <= str_m-1 ? str_l : str_m-1] = '\0';
+ }
+ /* Return the number of characters formatted (excluding trailing null
+ * character), that is, the number of characters that would have been
+ * written to the buffer if it were large enough.
+ *
+ * The value of str_l should be returned, but str_l is of unsigned type
+ * size_t, and snprintf is int, possibly leading to an undetected
+ * integer overflow, resulting in a negative return value, which is illegal.
+ * Both XSH5 and ISO C99 (at least the draft) are silent on this issue.
+ * Should errno be set to EOVERFLOW and EOF returned in this case???
+ */
+ return (int) str_l;
}
int symbian_snprintf(char *text, size_t maxlen, const char *fmt, ...) {