diff options
| -rw-r--r-- | backends/platform/symbian/src/vsnprintf.h | 796 |
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, ...) { |