| /* implements the unicode (as opposed to string) version of the |
| built-in formatters for string, int, float. that is, the versions |
| of int.__float__, etc., that take and return unicode objects */ |
| |
| #include "Python.h" |
| #include "pycore_fileutils.h" |
| #include <locale.h> |
| |
| /* Raises an exception about an unknown presentation type for this |
| * type. */ |
| |
| static void |
| unknown_presentation_type(Py_UCS4 presentation_type, |
| const char* type_name) |
| { |
| /* %c might be out-of-range, hence the two cases. */ |
| if (presentation_type > 32 && presentation_type < 128) |
| PyErr_Format(PyExc_ValueError, |
| "Unknown format code '%c' " |
| "for object of type '%.200s'", |
| (char)presentation_type, |
| type_name); |
| else |
| PyErr_Format(PyExc_ValueError, |
| "Unknown format code '\\x%x' " |
| "for object of type '%.200s'", |
| (unsigned int)presentation_type, |
| type_name); |
| } |
| |
| static void |
| invalid_thousands_separator_type(char specifier, Py_UCS4 presentation_type) |
| { |
| assert(specifier == ',' || specifier == '_'); |
| if (presentation_type > 32 && presentation_type < 128) |
| PyErr_Format(PyExc_ValueError, |
| "Cannot specify '%c' with '%c'.", |
| specifier, (char)presentation_type); |
| else |
| PyErr_Format(PyExc_ValueError, |
| "Cannot specify '%c' with '\\x%x'.", |
| specifier, (unsigned int)presentation_type); |
| } |
| |
| static void |
| invalid_comma_and_underscore(void) |
| { |
| PyErr_Format(PyExc_ValueError, "Cannot specify both ',' and '_'."); |
| } |
| |
| /* |
| get_integer consumes 0 or more decimal digit characters from an |
| input string, updates *result with the corresponding positive |
| integer, and returns the number of digits consumed. |
| |
| returns -1 on error. |
| */ |
| static int |
| get_integer(PyObject *str, Py_ssize_t *ppos, Py_ssize_t end, |
| Py_ssize_t *result) |
| { |
| Py_ssize_t accumulator, digitval, pos = *ppos; |
| int numdigits; |
| int kind = PyUnicode_KIND(str); |
| const void *data = PyUnicode_DATA(str); |
| |
| accumulator = numdigits = 0; |
| for (; pos < end; pos++, numdigits++) { |
| digitval = Py_UNICODE_TODECIMAL(PyUnicode_READ(kind, data, pos)); |
| if (digitval < 0) |
| break; |
| /* |
| Detect possible overflow before it happens: |
| |
| accumulator * 10 + digitval > PY_SSIZE_T_MAX if and only if |
| accumulator > (PY_SSIZE_T_MAX - digitval) / 10. |
| */ |
| if (accumulator > (PY_SSIZE_T_MAX - digitval) / 10) { |
| PyErr_Format(PyExc_ValueError, |
| "Too many decimal digits in format string"); |
| *ppos = pos; |
| return -1; |
| } |
| accumulator = accumulator * 10 + digitval; |
| } |
| *ppos = pos; |
| *result = accumulator; |
| return numdigits; |
| } |
| |
| /************************************************************************/ |
| /*********** standard format specifier parsing **************************/ |
| /************************************************************************/ |
| |
| /* returns true if this character is a specifier alignment token */ |
| Py_LOCAL_INLINE(int) |
| is_alignment_token(Py_UCS4 c) |
| { |
| switch (c) { |
| case '<': case '>': case '=': case '^': |
| return 1; |
| default: |
| return 0; |
| } |
| } |
| |
| /* returns true if this character is a sign element */ |
| Py_LOCAL_INLINE(int) |
| is_sign_element(Py_UCS4 c) |
| { |
| switch (c) { |
| case ' ': case '+': case '-': |
| return 1; |
| default: |
| return 0; |
| } |
| } |
| |
| /* Locale type codes. LT_NO_LOCALE must be zero. */ |
| enum LocaleType { |
| LT_NO_LOCALE = 0, |
| LT_DEFAULT_LOCALE = ',', |
| LT_UNDERSCORE_LOCALE = '_', |
| LT_UNDER_FOUR_LOCALE, |
| LT_CURRENT_LOCALE |
| }; |
| |
| typedef struct { |
| Py_UCS4 fill_char; |
| Py_UCS4 align; |
| int alternate; |
| Py_UCS4 sign; |
| Py_ssize_t width; |
| enum LocaleType thousands_separators; |
| Py_ssize_t precision; |
| Py_UCS4 type; |
| } InternalFormatSpec; |
| |
| #if 0 |
| /* Occasionally useful for debugging. Should normally be commented out. */ |
| static void |
| DEBUG_PRINT_FORMAT_SPEC(InternalFormatSpec *format) |
| { |
| printf("internal format spec: fill_char %d\n", format->fill_char); |
| printf("internal format spec: align %d\n", format->align); |
| printf("internal format spec: alternate %d\n", format->alternate); |
| printf("internal format spec: sign %d\n", format->sign); |
| printf("internal format spec: width %zd\n", format->width); |
| printf("internal format spec: thousands_separators %d\n", |
| format->thousands_separators); |
| printf("internal format spec: precision %zd\n", format->precision); |
| printf("internal format spec: type %c\n", format->type); |
| printf("\n"); |
| } |
| #endif |
| |
| |
| /* |
| ptr points to the start of the format_spec, end points just past its end. |
| fills in format with the parsed information. |
| returns 1 on success, 0 on failure. |
| if failure, sets the exception |
| */ |
| static int |
| parse_internal_render_format_spec(PyObject *format_spec, |
| Py_ssize_t start, Py_ssize_t end, |
| InternalFormatSpec *format, |
| char default_type, |
| char default_align) |
| { |
| Py_ssize_t pos = start; |
| int kind = PyUnicode_KIND(format_spec); |
| const void *data = PyUnicode_DATA(format_spec); |
| /* end-pos is used throughout this code to specify the length of |
| the input string */ |
| #define READ_spec(index) PyUnicode_READ(kind, data, index) |
| |
| Py_ssize_t consumed; |
| int align_specified = 0; |
| int fill_char_specified = 0; |
| |
| format->fill_char = ' '; |
| format->align = default_align; |
| format->alternate = 0; |
| format->sign = '\0'; |
| format->width = -1; |
| format->thousands_separators = LT_NO_LOCALE; |
| format->precision = -1; |
| format->type = default_type; |
| |
| /* If the second char is an alignment token, |
| then parse the fill char */ |
| if (end-pos >= 2 && is_alignment_token(READ_spec(pos+1))) { |
| format->align = READ_spec(pos+1); |
| format->fill_char = READ_spec(pos); |
| fill_char_specified = 1; |
| align_specified = 1; |
| pos += 2; |
| } |
| else if (end-pos >= 1 && is_alignment_token(READ_spec(pos))) { |
| format->align = READ_spec(pos); |
| align_specified = 1; |
| ++pos; |
| } |
| |
| /* Parse the various sign options */ |
| if (end-pos >= 1 && is_sign_element(READ_spec(pos))) { |
| format->sign = READ_spec(pos); |
| ++pos; |
| } |
| |
| /* If the next character is #, we're in alternate mode. This only |
| applies to integers. */ |
| if (end-pos >= 1 && READ_spec(pos) == '#') { |
| format->alternate = 1; |
| ++pos; |
| } |
| |
| /* The special case for 0-padding (backwards compat) */ |
| if (!fill_char_specified && end-pos >= 1 && READ_spec(pos) == '0') { |
| format->fill_char = '0'; |
| if (!align_specified) { |
| format->align = '='; |
| } |
| ++pos; |
| } |
| |
| consumed = get_integer(format_spec, &pos, end, &format->width); |
| if (consumed == -1) |
| /* Overflow error. Exception already set. */ |
| return 0; |
| |
| /* If consumed is 0, we didn't consume any characters for the |
| width. In that case, reset the width to -1, because |
| get_integer() will have set it to zero. -1 is how we record |
| that the width wasn't specified. */ |
| if (consumed == 0) |
| format->width = -1; |
| |
| /* Comma signifies add thousands separators */ |
| if (end-pos && READ_spec(pos) == ',') { |
| format->thousands_separators = LT_DEFAULT_LOCALE; |
| ++pos; |
| } |
| /* Underscore signifies add thousands separators */ |
| if (end-pos && READ_spec(pos) == '_') { |
| if (format->thousands_separators != LT_NO_LOCALE) { |
| invalid_comma_and_underscore(); |
| return 0; |
| } |
| format->thousands_separators = LT_UNDERSCORE_LOCALE; |
| ++pos; |
| } |
| if (end-pos && READ_spec(pos) == ',') { |
| if (format->thousands_separators == LT_UNDERSCORE_LOCALE) { |
| invalid_comma_and_underscore(); |
| return 0; |
| } |
| } |
| |
| /* Parse field precision */ |
| if (end-pos && READ_spec(pos) == '.') { |
| ++pos; |
| |
| consumed = get_integer(format_spec, &pos, end, &format->precision); |
| if (consumed == -1) |
| /* Overflow error. Exception already set. */ |
| return 0; |
| |
| /* Not having a precision after a dot is an error. */ |
| if (consumed == 0) { |
| PyErr_Format(PyExc_ValueError, |
| "Format specifier missing precision"); |
| return 0; |
| } |
| |
| } |
| |
| /* Finally, parse the type field. */ |
| |
| if (end-pos > 1) { |
| /* More than one char remain, invalid format specifier. */ |
| PyErr_Format(PyExc_ValueError, "Invalid format specifier"); |
| return 0; |
| } |
| |
| if (end-pos == 1) { |
| format->type = READ_spec(pos); |
| ++pos; |
| } |
| |
| /* Do as much validating as we can, just by looking at the format |
| specifier. Do not take into account what type of formatting |
| we're doing (int, float, string). */ |
| |
| if (format->thousands_separators) { |
| switch (format->type) { |
| case 'd': |
| case 'e': |
| case 'f': |
| case 'g': |
| case 'E': |
| case 'G': |
| case '%': |
| case 'F': |
| case '\0': |
| /* These are allowed. See PEP 378.*/ |
| break; |
| case 'b': |
| case 'o': |
| case 'x': |
| case 'X': |
| /* Underscores are allowed in bin/oct/hex. See PEP 515. */ |
| if (format->thousands_separators == LT_UNDERSCORE_LOCALE) { |
| /* Every four digits, not every three, in bin/oct/hex. */ |
| format->thousands_separators = LT_UNDER_FOUR_LOCALE; |
| break; |
| } |
| /* fall through */ |
| default: |
| invalid_thousands_separator_type(format->thousands_separators, format->type); |
| return 0; |
| } |
| } |
| |
| assert (format->align <= 127); |
| assert (format->sign <= 127); |
| return 1; |
| } |
| |
| /* Calculate the padding needed. */ |
| static void |
| calc_padding(Py_ssize_t nchars, Py_ssize_t width, Py_UCS4 align, |
| Py_ssize_t *n_lpadding, Py_ssize_t *n_rpadding, |
| Py_ssize_t *n_total) |
| { |
| if (width >= 0) { |
| if (nchars > width) |
| *n_total = nchars; |
| else |
| *n_total = width; |
| } |
| else { |
| /* not specified, use all of the chars and no more */ |
| *n_total = nchars; |
| } |
| |
| /* Figure out how much leading space we need, based on the |
| aligning */ |
| if (align == '>') |
| *n_lpadding = *n_total - nchars; |
| else if (align == '^') |
| *n_lpadding = (*n_total - nchars) / 2; |
| else if (align == '<' || align == '=') |
| *n_lpadding = 0; |
| else { |
| /* We should never have an unspecified alignment. */ |
| Py_UNREACHABLE(); |
| } |
| |
| *n_rpadding = *n_total - nchars - *n_lpadding; |
| } |
| |
| /* Do the padding, and return a pointer to where the caller-supplied |
| content goes. */ |
| static int |
| fill_padding(_PyUnicodeWriter *writer, |
| Py_ssize_t nchars, |
| Py_UCS4 fill_char, Py_ssize_t n_lpadding, |
| Py_ssize_t n_rpadding) |
| { |
| Py_ssize_t pos; |
| |
| /* Pad on left. */ |
| if (n_lpadding) { |
| pos = writer->pos; |
| _PyUnicode_FastFill(writer->buffer, pos, n_lpadding, fill_char); |
| } |
| |
| /* Pad on right. */ |
| if (n_rpadding) { |
| pos = writer->pos + nchars + n_lpadding; |
| _PyUnicode_FastFill(writer->buffer, pos, n_rpadding, fill_char); |
| } |
| |
| /* Pointer to the user content. */ |
| writer->pos += n_lpadding; |
| return 0; |
| } |
| |
| /************************************************************************/ |
| /*********** common routines for numeric formatting *********************/ |
| /************************************************************************/ |
| |
| /* Locale info needed for formatting integers and the part of floats |
| before and including the decimal. Note that locales only support |
| 8-bit chars, not unicode. */ |
| typedef struct { |
| PyObject *decimal_point; |
| PyObject *thousands_sep; |
| const char *grouping; |
| char *grouping_buffer; |
| } LocaleInfo; |
| |
| #define LocaleInfo_STATIC_INIT {0, 0, 0, 0} |
| |
| /* describes the layout for an integer, see the comment in |
| calc_number_widths() for details */ |
| typedef struct { |
| Py_ssize_t n_lpadding; |
| Py_ssize_t n_prefix; |
| Py_ssize_t n_spadding; |
| Py_ssize_t n_rpadding; |
| char sign; |
| Py_ssize_t n_sign; /* number of digits needed for sign (0/1) */ |
| Py_ssize_t n_grouped_digits; /* Space taken up by the digits, including |
| any grouping chars. */ |
| Py_ssize_t n_decimal; /* 0 if only an integer */ |
| Py_ssize_t n_remainder; /* Digits in decimal and/or exponent part, |
| excluding the decimal itself, if |
| present. */ |
| |
| /* These 2 are not the widths of fields, but are needed by |
| STRINGLIB_GROUPING. */ |
| Py_ssize_t n_digits; /* The number of digits before a decimal |
| or exponent. */ |
| Py_ssize_t n_min_width; /* The min_width we used when we computed |
| the n_grouped_digits width. */ |
| } NumberFieldWidths; |
| |
| |
| /* Given a number of the form: |
| digits[remainder] |
| where ptr points to the start and end points to the end, find where |
| the integer part ends. This could be a decimal, an exponent, both, |
| or neither. |
| If a decimal point is present, set *has_decimal and increment |
| remainder beyond it. |
| Results are undefined (but shouldn't crash) for improperly |
| formatted strings. |
| */ |
| static void |
| parse_number(PyObject *s, Py_ssize_t pos, Py_ssize_t end, |
| Py_ssize_t *n_remainder, int *has_decimal) |
| { |
| Py_ssize_t remainder; |
| int kind = PyUnicode_KIND(s); |
| const void *data = PyUnicode_DATA(s); |
| |
| while (pos<end && Py_ISDIGIT(PyUnicode_READ(kind, data, pos))) |
| ++pos; |
| remainder = pos; |
| |
| /* Does remainder start with a decimal point? */ |
| *has_decimal = pos<end && PyUnicode_READ(kind, data, remainder) == '.'; |
| |
| /* Skip the decimal point. */ |
| if (*has_decimal) |
| remainder++; |
| |
| *n_remainder = end - remainder; |
| } |
| |
| /* not all fields of format are used. for example, precision is |
| unused. should this take discrete params in order to be more clear |
| about what it does? or is passing a single format parameter easier |
| and more efficient enough to justify a little obfuscation? |
| Return -1 on error. */ |
| static Py_ssize_t |
| calc_number_widths(NumberFieldWidths *spec, Py_ssize_t n_prefix, |
| Py_UCS4 sign_char, Py_ssize_t n_start, |
| Py_ssize_t n_end, Py_ssize_t n_remainder, |
| int has_decimal, const LocaleInfo *locale, |
| const InternalFormatSpec *format, Py_UCS4 *maxchar) |
| { |
| Py_ssize_t n_non_digit_non_padding; |
| Py_ssize_t n_padding; |
| |
| spec->n_digits = n_end - n_start - n_remainder - (has_decimal?1:0); |
| spec->n_lpadding = 0; |
| spec->n_prefix = n_prefix; |
| spec->n_decimal = has_decimal ? PyUnicode_GET_LENGTH(locale->decimal_point) : 0; |
| spec->n_remainder = n_remainder; |
| spec->n_spadding = 0; |
| spec->n_rpadding = 0; |
| spec->sign = '\0'; |
| spec->n_sign = 0; |
| |
| /* the output will look like: |
| | | |
| | <lpadding> <sign> <prefix> <spadding> <grouped_digits> <decimal> <remainder> <rpadding> | |
| | | |
| |
| sign is computed from format->sign and the actual |
| sign of the number |
| |
| prefix is given (it's for the '0x' prefix) |
| |
| digits is already known |
| |
| the total width is either given, or computed from the |
| actual digits |
| |
| only one of lpadding, spadding, and rpadding can be non-zero, |
| and it's calculated from the width and other fields |
| */ |
| |
| /* compute the various parts we're going to write */ |
| switch (format->sign) { |
| case '+': |
| /* always put a + or - */ |
| spec->n_sign = 1; |
| spec->sign = (sign_char == '-' ? '-' : '+'); |
| break; |
| case ' ': |
| spec->n_sign = 1; |
| spec->sign = (sign_char == '-' ? '-' : ' '); |
| break; |
| default: |
| /* Not specified, or the default (-) */ |
| if (sign_char == '-') { |
| spec->n_sign = 1; |
| spec->sign = '-'; |
| } |
| } |
| |
| /* The number of chars used for non-digits and non-padding. */ |
| n_non_digit_non_padding = spec->n_sign + spec->n_prefix + spec->n_decimal + |
| spec->n_remainder; |
| |
| /* min_width can go negative, that's okay. format->width == -1 means |
| we don't care. */ |
| if (format->fill_char == '0' && format->align == '=') |
| spec->n_min_width = format->width - n_non_digit_non_padding; |
| else |
| spec->n_min_width = 0; |
| |
| if (spec->n_digits == 0) |
| /* This case only occurs when using 'c' formatting, we need |
| to special case it because the grouping code always wants |
| to have at least one character. */ |
| spec->n_grouped_digits = 0; |
| else { |
| Py_UCS4 grouping_maxchar; |
| spec->n_grouped_digits = _PyUnicode_InsertThousandsGrouping( |
| NULL, 0, |
| NULL, 0, spec->n_digits, |
| spec->n_min_width, |
| locale->grouping, locale->thousands_sep, &grouping_maxchar); |
| if (spec->n_grouped_digits == -1) { |
| return -1; |
| } |
| *maxchar = Py_MAX(*maxchar, grouping_maxchar); |
| } |
| |
| /* Given the desired width and the total of digit and non-digit |
| space we consume, see if we need any padding. format->width can |
| be negative (meaning no padding), but this code still works in |
| that case. */ |
| n_padding = format->width - |
| (n_non_digit_non_padding + spec->n_grouped_digits); |
| if (n_padding > 0) { |
| /* Some padding is needed. Determine if it's left, space, or right. */ |
| switch (format->align) { |
| case '<': |
| spec->n_rpadding = n_padding; |
| break; |
| case '^': |
| spec->n_lpadding = n_padding / 2; |
| spec->n_rpadding = n_padding - spec->n_lpadding; |
| break; |
| case '=': |
| spec->n_spadding = n_padding; |
| break; |
| case '>': |
| spec->n_lpadding = n_padding; |
| break; |
| default: |
| /* Shouldn't get here */ |
| Py_UNREACHABLE(); |
| } |
| } |
| |
| if (spec->n_lpadding || spec->n_spadding || spec->n_rpadding) |
| *maxchar = Py_MAX(*maxchar, format->fill_char); |
| |
| if (spec->n_decimal) |
| *maxchar = Py_MAX(*maxchar, PyUnicode_MAX_CHAR_VALUE(locale->decimal_point)); |
| |
| return spec->n_lpadding + spec->n_sign + spec->n_prefix + |
| spec->n_spadding + spec->n_grouped_digits + spec->n_decimal + |
| spec->n_remainder + spec->n_rpadding; |
| } |
| |
| /* Fill in the digit parts of a number's string representation, |
| as determined in calc_number_widths(). |
| Return -1 on error, or 0 on success. */ |
| static int |
| fill_number(_PyUnicodeWriter *writer, const NumberFieldWidths *spec, |
| PyObject *digits, Py_ssize_t d_start, |
| PyObject *prefix, Py_ssize_t p_start, |
| Py_UCS4 fill_char, |
| LocaleInfo *locale, int toupper) |
| { |
| /* Used to keep track of digits, decimal, and remainder. */ |
| Py_ssize_t d_pos = d_start; |
| const unsigned int kind = writer->kind; |
| const void *data = writer->data; |
| Py_ssize_t r; |
| |
| if (spec->n_lpadding) { |
| _PyUnicode_FastFill(writer->buffer, |
| writer->pos, spec->n_lpadding, fill_char); |
| writer->pos += spec->n_lpadding; |
| } |
| if (spec->n_sign == 1) { |
| PyUnicode_WRITE(kind, data, writer->pos, spec->sign); |
| writer->pos++; |
| } |
| if (spec->n_prefix) { |
| _PyUnicode_FastCopyCharacters(writer->buffer, writer->pos, |
| prefix, p_start, |
| spec->n_prefix); |
| if (toupper) { |
| Py_ssize_t t; |
| for (t = 0; t < spec->n_prefix; t++) { |
| Py_UCS4 c = PyUnicode_READ(kind, data, writer->pos + t); |
| c = Py_TOUPPER(c); |
| assert (c <= 127); |
| PyUnicode_WRITE(kind, data, writer->pos + t, c); |
| } |
| } |
| writer->pos += spec->n_prefix; |
| } |
| if (spec->n_spadding) { |
| _PyUnicode_FastFill(writer->buffer, |
| writer->pos, spec->n_spadding, fill_char); |
| writer->pos += spec->n_spadding; |
| } |
| |
| /* Only for type 'c' special case, it has no digits. */ |
| if (spec->n_digits != 0) { |
| /* Fill the digits with InsertThousandsGrouping. */ |
| r = _PyUnicode_InsertThousandsGrouping( |
| writer, spec->n_grouped_digits, |
| digits, d_pos, spec->n_digits, |
| spec->n_min_width, |
| locale->grouping, locale->thousands_sep, NULL); |
| if (r == -1) |
| return -1; |
| assert(r == spec->n_grouped_digits); |
| d_pos += spec->n_digits; |
| } |
| if (toupper) { |
| Py_ssize_t t; |
| for (t = 0; t < spec->n_grouped_digits; t++) { |
| Py_UCS4 c = PyUnicode_READ(kind, data, writer->pos + t); |
| c = Py_TOUPPER(c); |
| if (c > 127) { |
| PyErr_SetString(PyExc_SystemError, "non-ascii grouped digit"); |
| return -1; |
| } |
| PyUnicode_WRITE(kind, data, writer->pos + t, c); |
| } |
| } |
| writer->pos += spec->n_grouped_digits; |
| |
| if (spec->n_decimal) { |
| _PyUnicode_FastCopyCharacters( |
| writer->buffer, writer->pos, |
| locale->decimal_point, 0, spec->n_decimal); |
| writer->pos += spec->n_decimal; |
| d_pos += 1; |
| } |
| |
| if (spec->n_remainder) { |
| _PyUnicode_FastCopyCharacters( |
| writer->buffer, writer->pos, |
| digits, d_pos, spec->n_remainder); |
| writer->pos += spec->n_remainder; |
| /* d_pos += spec->n_remainder; */ |
| } |
| |
| if (spec->n_rpadding) { |
| _PyUnicode_FastFill(writer->buffer, |
| writer->pos, spec->n_rpadding, |
| fill_char); |
| writer->pos += spec->n_rpadding; |
| } |
| return 0; |
| } |
| |
| static const char no_grouping[1] = {CHAR_MAX}; |
| |
| /* Find the decimal point character(s?), thousands_separator(s?), and |
| grouping description, either for the current locale if type is |
| LT_CURRENT_LOCALE, a hard-coded locale if LT_DEFAULT_LOCALE or |
| LT_UNDERSCORE_LOCALE/LT_UNDER_FOUR_LOCALE, or none if LT_NO_LOCALE. */ |
| static int |
| get_locale_info(enum LocaleType type, LocaleInfo *locale_info) |
| { |
| switch (type) { |
| case LT_CURRENT_LOCALE: { |
| struct lconv *lc = localeconv(); |
| if (_Py_GetLocaleconvNumeric(lc, |
| &locale_info->decimal_point, |
| &locale_info->thousands_sep) < 0) { |
| return -1; |
| } |
| |
| /* localeconv() grouping can become a dangling pointer or point |
| to a different string if another thread calls localeconv() during |
| the string formatting. Copy the string to avoid this risk. */ |
| locale_info->grouping_buffer = _PyMem_Strdup(lc->grouping); |
| if (locale_info->grouping_buffer == NULL) { |
| PyErr_NoMemory(); |
| return -1; |
| } |
| locale_info->grouping = locale_info->grouping_buffer; |
| break; |
| } |
| case LT_DEFAULT_LOCALE: |
| case LT_UNDERSCORE_LOCALE: |
| case LT_UNDER_FOUR_LOCALE: |
| locale_info->decimal_point = PyUnicode_FromOrdinal('.'); |
| locale_info->thousands_sep = PyUnicode_FromOrdinal( |
| type == LT_DEFAULT_LOCALE ? ',' : '_'); |
| if (!locale_info->decimal_point || !locale_info->thousands_sep) |
| return -1; |
| if (type != LT_UNDER_FOUR_LOCALE) |
| locale_info->grouping = "\3"; /* Group every 3 characters. The |
| (implicit) trailing 0 means repeat |
| infinitely. */ |
| else |
| locale_info->grouping = "\4"; /* Bin/oct/hex group every four. */ |
| break; |
| case LT_NO_LOCALE: |
| locale_info->decimal_point = PyUnicode_FromOrdinal('.'); |
| locale_info->thousands_sep = PyUnicode_New(0, 0); |
| if (!locale_info->decimal_point || !locale_info->thousands_sep) |
| return -1; |
| locale_info->grouping = no_grouping; |
| break; |
| } |
| return 0; |
| } |
| |
| static void |
| free_locale_info(LocaleInfo *locale_info) |
| { |
| Py_XDECREF(locale_info->decimal_point); |
| Py_XDECREF(locale_info->thousands_sep); |
| PyMem_Free(locale_info->grouping_buffer); |
| } |
| |
| /************************************************************************/ |
| /*********** string formatting ******************************************/ |
| /************************************************************************/ |
| |
| static int |
| format_string_internal(PyObject *value, const InternalFormatSpec *format, |
| _PyUnicodeWriter *writer) |
| { |
| Py_ssize_t lpad; |
| Py_ssize_t rpad; |
| Py_ssize_t total; |
| Py_ssize_t len; |
| int result = -1; |
| Py_UCS4 maxchar; |
| |
| assert(PyUnicode_IS_READY(value)); |
| len = PyUnicode_GET_LENGTH(value); |
| |
| /* sign is not allowed on strings */ |
| if (format->sign != '\0') { |
| PyErr_SetString(PyExc_ValueError, |
| "Sign not allowed in string format specifier"); |
| goto done; |
| } |
| |
| /* alternate is not allowed on strings */ |
| if (format->alternate) { |
| PyErr_SetString(PyExc_ValueError, |
| "Alternate form (#) not allowed in string format " |
| "specifier"); |
| goto done; |
| } |
| |
| /* '=' alignment not allowed on strings */ |
| if (format->align == '=') { |
| PyErr_SetString(PyExc_ValueError, |
| "'=' alignment not allowed " |
| "in string format specifier"); |
| goto done; |
| } |
| |
| if ((format->width == -1 || format->width <= len) |
| && (format->precision == -1 || format->precision >= len)) { |
| /* Fast path */ |
| return _PyUnicodeWriter_WriteStr(writer, value); |
| } |
| |
| /* if precision is specified, output no more that format.precision |
| characters */ |
| if (format->precision >= 0 && len >= format->precision) { |
| len = format->precision; |
| } |
| |
| calc_padding(len, format->width, format->align, &lpad, &rpad, &total); |
| |
| maxchar = writer->maxchar; |
| if (lpad != 0 || rpad != 0) |
| maxchar = Py_MAX(maxchar, format->fill_char); |
| if (PyUnicode_MAX_CHAR_VALUE(value) > maxchar) { |
| Py_UCS4 valmaxchar = _PyUnicode_FindMaxChar(value, 0, len); |
| maxchar = Py_MAX(maxchar, valmaxchar); |
| } |
| |
| /* allocate the resulting string */ |
| if (_PyUnicodeWriter_Prepare(writer, total, maxchar) == -1) |
| goto done; |
| |
| /* Write into that space. First the padding. */ |
| result = fill_padding(writer, len, format->fill_char, lpad, rpad); |
| if (result == -1) |
| goto done; |
| |
| /* Then the source string. */ |
| if (len) { |
| _PyUnicode_FastCopyCharacters(writer->buffer, writer->pos, |
| value, 0, len); |
| } |
| writer->pos += (len + rpad); |
| result = 0; |
| |
| done: |
| return result; |
| } |
| |
| |
| /************************************************************************/ |
| /*********** long formatting ********************************************/ |
| /************************************************************************/ |
| |
| static int |
| format_long_internal(PyObject *value, const InternalFormatSpec *format, |
| _PyUnicodeWriter *writer) |
| { |
| int result = -1; |
| Py_UCS4 maxchar = 127; |
| PyObject *tmp = NULL; |
| Py_ssize_t inumeric_chars; |
| Py_UCS4 sign_char = '\0'; |
| Py_ssize_t n_digits; /* count of digits need from the computed |
| string */ |
| Py_ssize_t n_remainder = 0; /* Used only for 'c' formatting, which |
| produces non-digits */ |
| Py_ssize_t n_prefix = 0; /* Count of prefix chars, (e.g., '0x') */ |
| Py_ssize_t n_total; |
| Py_ssize_t prefix = 0; |
| NumberFieldWidths spec; |
| long x; |
| |
| /* Locale settings, either from the actual locale or |
| from a hard-code pseudo-locale */ |
| LocaleInfo locale = LocaleInfo_STATIC_INIT; |
| |
| /* no precision allowed on integers */ |
| if (format->precision != -1) { |
| PyErr_SetString(PyExc_ValueError, |
| "Precision not allowed in integer format specifier"); |
| goto done; |
| } |
| |
| /* special case for character formatting */ |
| if (format->type == 'c') { |
| /* error to specify a sign */ |
| if (format->sign != '\0') { |
| PyErr_SetString(PyExc_ValueError, |
| "Sign not allowed with integer" |
| " format specifier 'c'"); |
| goto done; |
| } |
| /* error to request alternate format */ |
| if (format->alternate) { |
| PyErr_SetString(PyExc_ValueError, |
| "Alternate form (#) not allowed with integer" |
| " format specifier 'c'"); |
| goto done; |
| } |
| |
| /* taken from unicodeobject.c formatchar() */ |
| /* Integer input truncated to a character */ |
| x = PyLong_AsLong(value); |
| if (x == -1 && PyErr_Occurred()) |
| goto done; |
| if (x < 0 || x > 0x10ffff) { |
| PyErr_SetString(PyExc_OverflowError, |
| "%c arg not in range(0x110000)"); |
| goto done; |
| } |
| tmp = PyUnicode_FromOrdinal(x); |
| inumeric_chars = 0; |
| n_digits = 1; |
| maxchar = Py_MAX(maxchar, (Py_UCS4)x); |
| |
| /* As a sort-of hack, we tell calc_number_widths that we only |
| have "remainder" characters. calc_number_widths thinks |
| these are characters that don't get formatted, only copied |
| into the output string. We do this for 'c' formatting, |
| because the characters are likely to be non-digits. */ |
| n_remainder = 1; |
| } |
| else { |
| int base; |
| int leading_chars_to_skip = 0; /* Number of characters added by |
| PyNumber_ToBase that we want to |
| skip over. */ |
| |
| /* Compute the base and how many characters will be added by |
| PyNumber_ToBase */ |
| switch (format->type) { |
| case 'b': |
| base = 2; |
| leading_chars_to_skip = 2; /* 0b */ |
| break; |
| case 'o': |
| base = 8; |
| leading_chars_to_skip = 2; /* 0o */ |
| break; |
| case 'x': |
| case 'X': |
| base = 16; |
| leading_chars_to_skip = 2; /* 0x */ |
| break; |
| default: /* shouldn't be needed, but stops a compiler warning */ |
| case 'd': |
| case 'n': |
| base = 10; |
| break; |
| } |
| |
| if (format->sign != '+' && format->sign != ' ' |
| && format->width == -1 |
| && format->type != 'X' && format->type != 'n' |
| && !format->thousands_separators |
| && PyLong_CheckExact(value)) |
| { |
| /* Fast path */ |
| return _PyLong_FormatWriter(writer, value, base, format->alternate); |
| } |
| |
| /* The number of prefix chars is the same as the leading |
| chars to skip */ |
| if (format->alternate) |
| n_prefix = leading_chars_to_skip; |
| |
| /* Do the hard part, converting to a string in a given base */ |
| tmp = _PyLong_Format(value, base); |
| if (tmp == NULL || PyUnicode_READY(tmp) == -1) |
| goto done; |
| |
| inumeric_chars = 0; |
| n_digits = PyUnicode_GET_LENGTH(tmp); |
| |
| prefix = inumeric_chars; |
| |
| /* Is a sign character present in the output? If so, remember it |
| and skip it */ |
| if (PyUnicode_READ_CHAR(tmp, inumeric_chars) == '-') { |
| sign_char = '-'; |
| ++prefix; |
| ++leading_chars_to_skip; |
| } |
| |
| /* Skip over the leading chars (0x, 0b, etc.) */ |
| n_digits -= leading_chars_to_skip; |
| inumeric_chars += leading_chars_to_skip; |
| } |
| |
| /* Determine the grouping, separator, and decimal point, if any. */ |
| if (get_locale_info(format->type == 'n' ? LT_CURRENT_LOCALE : |
| format->thousands_separators, |
| &locale) == -1) |
| goto done; |
| |
| /* Calculate how much memory we'll need. */ |
| n_total = calc_number_widths(&spec, n_prefix, sign_char, inumeric_chars, |
| inumeric_chars + n_digits, n_remainder, 0, |
| &locale, format, &maxchar); |
| if (n_total == -1) { |
| goto done; |
| } |
| |
| /* Allocate the memory. */ |
| if (_PyUnicodeWriter_Prepare(writer, n_total, maxchar) == -1) |
| goto done; |
| |
| /* Populate the memory. */ |
| result = fill_number(writer, &spec, |
| tmp, inumeric_chars, |
| tmp, prefix, format->fill_char, |
| &locale, format->type == 'X'); |
| |
| done: |
| Py_XDECREF(tmp); |
| free_locale_info(&locale); |
| return result; |
| } |
| |
| /************************************************************************/ |
| /*********** float formatting *******************************************/ |
| /************************************************************************/ |
| |
| /* much of this is taken from unicodeobject.c */ |
| static int |
| format_float_internal(PyObject *value, |
| const InternalFormatSpec *format, |
| _PyUnicodeWriter *writer) |
| { |
| char *buf = NULL; /* buffer returned from PyOS_double_to_string */ |
| Py_ssize_t n_digits; |
| Py_ssize_t n_remainder; |
| Py_ssize_t n_total; |
| int has_decimal; |
| double val; |
| int precision, default_precision = 6; |
| Py_UCS4 type = format->type; |
| int add_pct = 0; |
| Py_ssize_t index; |
| NumberFieldWidths spec; |
| int flags = 0; |
| int result = -1; |
| Py_UCS4 maxchar = 127; |
| Py_UCS4 sign_char = '\0'; |
| int float_type; /* Used to see if we have a nan, inf, or regular float. */ |
| PyObject *unicode_tmp = NULL; |
| |
| /* Locale settings, either from the actual locale or |
| from a hard-code pseudo-locale */ |
| LocaleInfo locale = LocaleInfo_STATIC_INIT; |
| |
| if (format->precision > INT_MAX) { |
| PyErr_SetString(PyExc_ValueError, "precision too big"); |
| goto done; |
| } |
| precision = (int)format->precision; |
| |
| if (format->alternate) |
| flags |= Py_DTSF_ALT; |
| |
| if (type == '\0') { |
| /* Omitted type specifier. Behaves in the same way as repr(x) |
| and str(x) if no precision is given, else like 'g', but with |
| at least one digit after the decimal point. */ |
| flags |= Py_DTSF_ADD_DOT_0; |
| type = 'r'; |
| default_precision = 0; |
| } |
| |
| if (type == 'n') |
| /* 'n' is the same as 'g', except for the locale used to |
| format the result. We take care of that later. */ |
| type = 'g'; |
| |
| val = PyFloat_AsDouble(value); |
| if (val == -1.0 && PyErr_Occurred()) |
| goto done; |
| |
| if (type == '%') { |
| type = 'f'; |
| val *= 100; |
| add_pct = 1; |
| } |
| |
| if (precision < 0) |
| precision = default_precision; |
| else if (type == 'r') |
| type = 'g'; |
| |
| /* Cast "type", because if we're in unicode we need to pass an |
| 8-bit char. This is safe, because we've restricted what "type" |
| can be. */ |
| buf = PyOS_double_to_string(val, (char)type, precision, flags, |
| &float_type); |
| if (buf == NULL) |
| goto done; |
| n_digits = strlen(buf); |
| |
| if (add_pct) { |
| /* We know that buf has a trailing zero (since we just called |
| strlen() on it), and we don't use that fact any more. So we |
| can just write over the trailing zero. */ |
| buf[n_digits] = '%'; |
| n_digits += 1; |
| } |
| |
| if (format->sign != '+' && format->sign != ' ' |
| && format->width == -1 |
| && format->type != 'n' |
| && !format->thousands_separators) |
| { |
| /* Fast path */ |
| result = _PyUnicodeWriter_WriteASCIIString(writer, buf, n_digits); |
| PyMem_Free(buf); |
| return result; |
| } |
| |
| /* Since there is no unicode version of PyOS_double_to_string, |
| just use the 8 bit version and then convert to unicode. */ |
| unicode_tmp = _PyUnicode_FromASCII(buf, n_digits); |
| PyMem_Free(buf); |
| if (unicode_tmp == NULL) |
| goto done; |
| |
| /* Is a sign character present in the output? If so, remember it |
| and skip it */ |
| index = 0; |
| if (PyUnicode_READ_CHAR(unicode_tmp, index) == '-') { |
| sign_char = '-'; |
| ++index; |
| --n_digits; |
| } |
| |
| /* Determine if we have any "remainder" (after the digits, might include |
| decimal or exponent or both (or neither)) */ |
| parse_number(unicode_tmp, index, index + n_digits, &n_remainder, &has_decimal); |
| |
| /* Determine the grouping, separator, and decimal point, if any. */ |
| if (get_locale_info(format->type == 'n' ? LT_CURRENT_LOCALE : |
| format->thousands_separators, |
| &locale) == -1) |
| goto done; |
| |
| /* Calculate how much memory we'll need. */ |
| n_total = calc_number_widths(&spec, 0, sign_char, index, |
| index + n_digits, n_remainder, has_decimal, |
| &locale, format, &maxchar); |
| if (n_total == -1) { |
| goto done; |
| } |
| |
| /* Allocate the memory. */ |
| if (_PyUnicodeWriter_Prepare(writer, n_total, maxchar) == -1) |
| goto done; |
| |
| /* Populate the memory. */ |
| result = fill_number(writer, &spec, |
| unicode_tmp, index, |
| NULL, 0, format->fill_char, |
| &locale, 0); |
| |
| done: |
| Py_XDECREF(unicode_tmp); |
| free_locale_info(&locale); |
| return result; |
| } |
| |
| /************************************************************************/ |
| /*********** complex formatting *****************************************/ |
| /************************************************************************/ |
| |
| static int |
| format_complex_internal(PyObject *value, |
| const InternalFormatSpec *format, |
| _PyUnicodeWriter *writer) |
| { |
| double re; |
| double im; |
| char *re_buf = NULL; /* buffer returned from PyOS_double_to_string */ |
| char *im_buf = NULL; /* buffer returned from PyOS_double_to_string */ |
| |
| InternalFormatSpec tmp_format = *format; |
| Py_ssize_t n_re_digits; |
| Py_ssize_t n_im_digits; |
| Py_ssize_t n_re_remainder; |
| Py_ssize_t n_im_remainder; |
| Py_ssize_t n_re_total; |
| Py_ssize_t n_im_total; |
| int re_has_decimal; |
| int im_has_decimal; |
| int precision, default_precision = 6; |
| Py_UCS4 type = format->type; |
| Py_ssize_t i_re; |
| Py_ssize_t i_im; |
| NumberFieldWidths re_spec; |
| NumberFieldWidths im_spec; |
| int flags = 0; |
| int result = -1; |
| Py_UCS4 maxchar = 127; |
| enum PyUnicode_Kind rkind; |
| void *rdata; |
| Py_UCS4 re_sign_char = '\0'; |
| Py_UCS4 im_sign_char = '\0'; |
| int re_float_type; /* Used to see if we have a nan, inf, or regular float. */ |
| int im_float_type; |
| int add_parens = 0; |
| int skip_re = 0; |
| Py_ssize_t lpad; |
| Py_ssize_t rpad; |
| Py_ssize_t total; |
| PyObject *re_unicode_tmp = NULL; |
| PyObject *im_unicode_tmp = NULL; |
| |
| /* Locale settings, either from the actual locale or |
| from a hard-code pseudo-locale */ |
| LocaleInfo locale = LocaleInfo_STATIC_INIT; |
| |
| if (format->precision > INT_MAX) { |
| PyErr_SetString(PyExc_ValueError, "precision too big"); |
| goto done; |
| } |
| precision = (int)format->precision; |
| |
| /* Zero padding is not allowed. */ |
| if (format->fill_char == '0') { |
| PyErr_SetString(PyExc_ValueError, |
| "Zero padding is not allowed in complex format " |
| "specifier"); |
| goto done; |
| } |
| |
| /* Neither is '=' alignment . */ |
| if (format->align == '=') { |
| PyErr_SetString(PyExc_ValueError, |
| "'=' alignment flag is not allowed in complex format " |
| "specifier"); |
| goto done; |
| } |
| |
| re = PyComplex_RealAsDouble(value); |
| if (re == -1.0 && PyErr_Occurred()) |
| goto done; |
| im = PyComplex_ImagAsDouble(value); |
| if (im == -1.0 && PyErr_Occurred()) |
| goto done; |
| |
| if (format->alternate) |
| flags |= Py_DTSF_ALT; |
| |
| if (type == '\0') { |
| /* Omitted type specifier. Should be like str(self). */ |
| type = 'r'; |
| default_precision = 0; |
| if (re == 0.0 && copysign(1.0, re) == 1.0) |
| skip_re = 1; |
| else |
| add_parens = 1; |
| } |
| |
| if (type == 'n') |
| /* 'n' is the same as 'g', except for the locale used to |
| format the result. We take care of that later. */ |
| type = 'g'; |
| |
| if (precision < 0) |
| precision = default_precision; |
| else if (type == 'r') |
| type = 'g'; |
| |
| /* Cast "type", because if we're in unicode we need to pass an |
| 8-bit char. This is safe, because we've restricted what "type" |
| can be. */ |
| re_buf = PyOS_double_to_string(re, (char)type, precision, flags, |
| &re_float_type); |
| if (re_buf == NULL) |
| goto done; |
| im_buf = PyOS_double_to_string(im, (char)type, precision, flags, |
| &im_float_type); |
| if (im_buf == NULL) |
| goto done; |
| |
| n_re_digits = strlen(re_buf); |
| n_im_digits = strlen(im_buf); |
| |
| /* Since there is no unicode version of PyOS_double_to_string, |
| just use the 8 bit version and then convert to unicode. */ |
| re_unicode_tmp = _PyUnicode_FromASCII(re_buf, n_re_digits); |
| if (re_unicode_tmp == NULL) |
| goto done; |
| i_re = 0; |
| |
| im_unicode_tmp = _PyUnicode_FromASCII(im_buf, n_im_digits); |
| if (im_unicode_tmp == NULL) |
| goto done; |
| i_im = 0; |
| |
| /* Is a sign character present in the output? If so, remember it |
| and skip it */ |
| if (PyUnicode_READ_CHAR(re_unicode_tmp, i_re) == '-') { |
| re_sign_char = '-'; |
| ++i_re; |
| --n_re_digits; |
| } |
| if (PyUnicode_READ_CHAR(im_unicode_tmp, i_im) == '-') { |
| im_sign_char = '-'; |
| ++i_im; |
| --n_im_digits; |
| } |
| |
| /* Determine if we have any "remainder" (after the digits, might include |
| decimal or exponent or both (or neither)) */ |
| parse_number(re_unicode_tmp, i_re, i_re + n_re_digits, |
| &n_re_remainder, &re_has_decimal); |
| parse_number(im_unicode_tmp, i_im, i_im + n_im_digits, |
| &n_im_remainder, &im_has_decimal); |
| |
| /* Determine the grouping, separator, and decimal point, if any. */ |
| if (get_locale_info(format->type == 'n' ? LT_CURRENT_LOCALE : |
| format->thousands_separators, |
| &locale) == -1) |
| goto done; |
| |
| /* Turn off any padding. We'll do it later after we've composed |
| the numbers without padding. */ |
| tmp_format.fill_char = '\0'; |
| tmp_format.align = '<'; |
| tmp_format.width = -1; |
| |
| /* Calculate how much memory we'll need. */ |
| n_re_total = calc_number_widths(&re_spec, 0, re_sign_char, |
| i_re, i_re + n_re_digits, n_re_remainder, |
| re_has_decimal, &locale, &tmp_format, |
| &maxchar); |
| if (n_re_total == -1) { |
| goto done; |
| } |
| |
| /* Same formatting, but always include a sign, unless the real part is |
| * going to be omitted, in which case we use whatever sign convention was |
| * requested by the original format. */ |
| if (!skip_re) |
| tmp_format.sign = '+'; |
| n_im_total = calc_number_widths(&im_spec, 0, im_sign_char, |
| i_im, i_im + n_im_digits, n_im_remainder, |
| im_has_decimal, &locale, &tmp_format, |
| &maxchar); |
| if (n_im_total == -1) { |
| goto done; |
| } |
| |
| if (skip_re) |
| n_re_total = 0; |
| |
| /* Add 1 for the 'j', and optionally 2 for parens. */ |
| calc_padding(n_re_total + n_im_total + 1 + add_parens * 2, |
| format->width, format->align, &lpad, &rpad, &total); |
| |
| if (lpad || rpad) |
| maxchar = Py_MAX(maxchar, format->fill_char); |
| |
| if (_PyUnicodeWriter_Prepare(writer, total, maxchar) == -1) |
| goto done; |
| rkind = writer->kind; |
| rdata = writer->data; |
| |
| /* Populate the memory. First, the padding. */ |
| result = fill_padding(writer, |
| n_re_total + n_im_total + 1 + add_parens * 2, |
| format->fill_char, lpad, rpad); |
| if (result == -1) |
| goto done; |
| |
| if (add_parens) { |
| PyUnicode_WRITE(rkind, rdata, writer->pos, '('); |
| writer->pos++; |
| } |
| |
| if (!skip_re) { |
| result = fill_number(writer, &re_spec, |
| re_unicode_tmp, i_re, |
| NULL, 0, |
| 0, |
| &locale, 0); |
| if (result == -1) |
| goto done; |
| } |
| result = fill_number(writer, &im_spec, |
| im_unicode_tmp, i_im, |
| NULL, 0, |
| 0, |
| &locale, 0); |
| if (result == -1) |
| goto done; |
| PyUnicode_WRITE(rkind, rdata, writer->pos, 'j'); |
| writer->pos++; |
| |
| if (add_parens) { |
| PyUnicode_WRITE(rkind, rdata, writer->pos, ')'); |
| writer->pos++; |
| } |
| |
| writer->pos += rpad; |
| |
| done: |
| PyMem_Free(re_buf); |
| PyMem_Free(im_buf); |
| Py_XDECREF(re_unicode_tmp); |
| Py_XDECREF(im_unicode_tmp); |
| free_locale_info(&locale); |
| return result; |
| } |
| |
| /************************************************************************/ |
| /*********** built in formatters ****************************************/ |
| /************************************************************************/ |
| static int |
| format_obj(PyObject *obj, _PyUnicodeWriter *writer) |
| { |
| PyObject *str; |
| int err; |
| |
| str = PyObject_Str(obj); |
| if (str == NULL) |
| return -1; |
| err = _PyUnicodeWriter_WriteStr(writer, str); |
| Py_DECREF(str); |
| return err; |
| } |
| |
| int |
| _PyUnicode_FormatAdvancedWriter(_PyUnicodeWriter *writer, |
| PyObject *obj, |
| PyObject *format_spec, |
| Py_ssize_t start, Py_ssize_t end) |
| { |
| InternalFormatSpec format; |
| |
| assert(PyUnicode_Check(obj)); |
| |
| /* check for the special case of zero length format spec, make |
| it equivalent to str(obj) */ |
| if (start == end) { |
| if (PyUnicode_CheckExact(obj)) |
| return _PyUnicodeWriter_WriteStr(writer, obj); |
| else |
| return format_obj(obj, writer); |
| } |
| |
| /* parse the format_spec */ |
| if (!parse_internal_render_format_spec(format_spec, start, end, |
| &format, 's', '<')) |
| return -1; |
| |
| /* type conversion? */ |
| switch (format.type) { |
| case 's': |
| /* no type conversion needed, already a string. do the formatting */ |
| return format_string_internal(obj, &format, writer); |
| default: |
| /* unknown */ |
| unknown_presentation_type(format.type, Py_TYPE(obj)->tp_name); |
| return -1; |
| } |
| } |
| |
| int |
| _PyLong_FormatAdvancedWriter(_PyUnicodeWriter *writer, |
| PyObject *obj, |
| PyObject *format_spec, |
| Py_ssize_t start, Py_ssize_t end) |
| { |
| PyObject *tmp = NULL; |
| InternalFormatSpec format; |
| int result = -1; |
| |
| /* check for the special case of zero length format spec, make |
| it equivalent to str(obj) */ |
| if (start == end) { |
| if (PyLong_CheckExact(obj)) |
| return _PyLong_FormatWriter(writer, obj, 10, 0); |
| else |
| return format_obj(obj, writer); |
| } |
| |
| /* parse the format_spec */ |
| if (!parse_internal_render_format_spec(format_spec, start, end, |
| &format, 'd', '>')) |
| goto done; |
| |
| /* type conversion? */ |
| switch (format.type) { |
| case 'b': |
| case 'c': |
| case 'd': |
| case 'o': |
| case 'x': |
| case 'X': |
| case 'n': |
| /* no type conversion needed, already an int. do the formatting */ |
| result = format_long_internal(obj, &format, writer); |
| break; |
| |
| case 'e': |
| case 'E': |
| case 'f': |
| case 'F': |
| case 'g': |
| case 'G': |
| case '%': |
| /* convert to float */ |
| tmp = PyNumber_Float(obj); |
| if (tmp == NULL) |
| goto done; |
| result = format_float_internal(tmp, &format, writer); |
| break; |
| |
| default: |
| /* unknown */ |
| unknown_presentation_type(format.type, Py_TYPE(obj)->tp_name); |
| goto done; |
| } |
| |
| done: |
| Py_XDECREF(tmp); |
| return result; |
| } |
| |
| int |
| _PyFloat_FormatAdvancedWriter(_PyUnicodeWriter *writer, |
| PyObject *obj, |
| PyObject *format_spec, |
| Py_ssize_t start, Py_ssize_t end) |
| { |
| InternalFormatSpec format; |
| |
| /* check for the special case of zero length format spec, make |
| it equivalent to str(obj) */ |
| if (start == end) |
| return format_obj(obj, writer); |
| |
| /* parse the format_spec */ |
| if (!parse_internal_render_format_spec(format_spec, start, end, |
| &format, '\0', '>')) |
| return -1; |
| |
| /* type conversion? */ |
| switch (format.type) { |
| case '\0': /* No format code: like 'g', but with at least one decimal. */ |
| case 'e': |
| case 'E': |
| case 'f': |
| case 'F': |
| case 'g': |
| case 'G': |
| case 'n': |
| case '%': |
| /* no conversion, already a float. do the formatting */ |
| return format_float_internal(obj, &format, writer); |
| |
| default: |
| /* unknown */ |
| unknown_presentation_type(format.type, Py_TYPE(obj)->tp_name); |
| return -1; |
| } |
| } |
| |
| int |
| _PyComplex_FormatAdvancedWriter(_PyUnicodeWriter *writer, |
| PyObject *obj, |
| PyObject *format_spec, |
| Py_ssize_t start, Py_ssize_t end) |
| { |
| InternalFormatSpec format; |
| |
| /* check for the special case of zero length format spec, make |
| it equivalent to str(obj) */ |
| if (start == end) |
| return format_obj(obj, writer); |
| |
| /* parse the format_spec */ |
| if (!parse_internal_render_format_spec(format_spec, start, end, |
| &format, '\0', '>')) |
| return -1; |
| |
| /* type conversion? */ |
| switch (format.type) { |
| case '\0': /* No format code: like 'g', but with at least one decimal. */ |
| case 'e': |
| case 'E': |
| case 'f': |
| case 'F': |
| case 'g': |
| case 'G': |
| case 'n': |
| /* no conversion, already a complex. do the formatting */ |
| return format_complex_internal(obj, &format, writer); |
| |
| default: |
| /* unknown */ |
| unknown_presentation_type(format.type, Py_TYPE(obj)->tp_name); |
| return -1; |
| } |
| } |