diff options
Diffstat (limited to 'Objects/bytes_methods.c')
| -rw-r--r-- | Objects/bytes_methods.c | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/Objects/bytes_methods.c b/Objects/bytes_methods.c new file mode 100644 index 0000000..de87905 --- /dev/null +++ b/Objects/bytes_methods.c @@ -0,0 +1,610 @@ +#include "Python.h" +#include "bytes_methods.h" + +/* Our own locale-independent ctype.h-like macros */ + +const unsigned int _Py_ctype_table[256] = { + 0, /* 0x0 '\x00' */ + 0, /* 0x1 '\x01' */ + 0, /* 0x2 '\x02' */ + 0, /* 0x3 '\x03' */ + 0, /* 0x4 '\x04' */ + 0, /* 0x5 '\x05' */ + 0, /* 0x6 '\x06' */ + 0, /* 0x7 '\x07' */ + 0, /* 0x8 '\x08' */ + FLAG_SPACE, /* 0x9 '\t' */ + FLAG_SPACE, /* 0xa '\n' */ + FLAG_SPACE, /* 0xb '\v' */ + FLAG_SPACE, /* 0xc '\f' */ + FLAG_SPACE, /* 0xd '\r' */ + 0, /* 0xe '\x0e' */ + 0, /* 0xf '\x0f' */ + 0, /* 0x10 '\x10' */ + 0, /* 0x11 '\x11' */ + 0, /* 0x12 '\x12' */ + 0, /* 0x13 '\x13' */ + 0, /* 0x14 '\x14' */ + 0, /* 0x15 '\x15' */ + 0, /* 0x16 '\x16' */ + 0, /* 0x17 '\x17' */ + 0, /* 0x18 '\x18' */ + 0, /* 0x19 '\x19' */ + 0, /* 0x1a '\x1a' */ + 0, /* 0x1b '\x1b' */ + 0, /* 0x1c '\x1c' */ + 0, /* 0x1d '\x1d' */ + 0, /* 0x1e '\x1e' */ + 0, /* 0x1f '\x1f' */ + FLAG_SPACE, /* 0x20 ' ' */ + 0, /* 0x21 '!' */ + 0, /* 0x22 '"' */ + 0, /* 0x23 '#' */ + 0, /* 0x24 '$' */ + 0, /* 0x25 '%' */ + 0, /* 0x26 '&' */ + 0, /* 0x27 "'" */ + 0, /* 0x28 '(' */ + 0, /* 0x29 ')' */ + 0, /* 0x2a '*' */ + 0, /* 0x2b '+' */ + 0, /* 0x2c ',' */ + 0, /* 0x2d '-' */ + 0, /* 0x2e '.' */ + 0, /* 0x2f '/' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x30 '0' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x31 '1' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x32 '2' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x33 '3' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x34 '4' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x35 '5' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x36 '6' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x37 '7' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x38 '8' */ + FLAG_DIGIT|FLAG_XDIGIT, /* 0x39 '9' */ + 0, /* 0x3a ':' */ + 0, /* 0x3b ';' */ + 0, /* 0x3c '<' */ + 0, /* 0x3d '=' */ + 0, /* 0x3e '>' */ + 0, /* 0x3f '?' */ + 0, /* 0x40 '@' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x41 'A' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x42 'B' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x43 'C' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x44 'D' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x45 'E' */ + FLAG_UPPER|FLAG_XDIGIT, /* 0x46 'F' */ + FLAG_UPPER, /* 0x47 'G' */ + FLAG_UPPER, /* 0x48 'H' */ + FLAG_UPPER, /* 0x49 'I' */ + FLAG_UPPER, /* 0x4a 'J' */ + FLAG_UPPER, /* 0x4b 'K' */ + FLAG_UPPER, /* 0x4c 'L' */ + FLAG_UPPER, /* 0x4d 'M' */ + FLAG_UPPER, /* 0x4e 'N' */ + FLAG_UPPER, /* 0x4f 'O' */ + FLAG_UPPER, /* 0x50 'P' */ + FLAG_UPPER, /* 0x51 'Q' */ + FLAG_UPPER, /* 0x52 'R' */ + FLAG_UPPER, /* 0x53 'S' */ + FLAG_UPPER, /* 0x54 'T' */ + FLAG_UPPER, /* 0x55 'U' */ + FLAG_UPPER, /* 0x56 'V' */ + FLAG_UPPER, /* 0x57 'W' */ + FLAG_UPPER, /* 0x58 'X' */ + FLAG_UPPER, /* 0x59 'Y' */ + FLAG_UPPER, /* 0x5a 'Z' */ + 0, /* 0x5b '[' */ + 0, /* 0x5c '\\' */ + 0, /* 0x5d ']' */ + 0, /* 0x5e '^' */ + 0, /* 0x5f '_' */ + 0, /* 0x60 '`' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x61 'a' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x62 'b' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x63 'c' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x64 'd' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x65 'e' */ + FLAG_LOWER|FLAG_XDIGIT, /* 0x66 'f' */ + FLAG_LOWER, /* 0x67 'g' */ + FLAG_LOWER, /* 0x68 'h' */ + FLAG_LOWER, /* 0x69 'i' */ + FLAG_LOWER, /* 0x6a 'j' */ + FLAG_LOWER, /* 0x6b 'k' */ + FLAG_LOWER, /* 0x6c 'l' */ + FLAG_LOWER, /* 0x6d 'm' */ + FLAG_LOWER, /* 0x6e 'n' */ + FLAG_LOWER, /* 0x6f 'o' */ + FLAG_LOWER, /* 0x70 'p' */ + FLAG_LOWER, /* 0x71 'q' */ + FLAG_LOWER, /* 0x72 'r' */ + FLAG_LOWER, /* 0x73 's' */ + FLAG_LOWER, /* 0x74 't' */ + FLAG_LOWER, /* 0x75 'u' */ + FLAG_LOWER, /* 0x76 'v' */ + FLAG_LOWER, /* 0x77 'w' */ + FLAG_LOWER, /* 0x78 'x' */ + FLAG_LOWER, /* 0x79 'y' */ + FLAG_LOWER, /* 0x7a 'z' */ + 0, /* 0x7b '{' */ + 0, /* 0x7c '|' */ + 0, /* 0x7d '}' */ + 0, /* 0x7e '~' */ + 0, /* 0x7f '\x7f' */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +}; + + +const unsigned char _Py_ctype_tolower[256] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, + 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, + 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, + 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, + 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, + 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, + 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, + 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, + 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, + 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, + 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, + 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, +}; + +const unsigned char _Py_ctype_toupper[256] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, + 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, + 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, + 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, + 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, + 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, + 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, + 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, + 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, + 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, + 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, +}; + + +PyDoc_STRVAR_shared(_Py_isspace__doc__, +"B.isspace() -> bool\n\ +\n\ +Return True if all characters in B are whitespace\n\ +and there is at least one character in B, False otherwise."); + +PyObject* +_Py_bytes_isspace(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + + /* Shortcut for single character strings */ + if (len == 1 && ISSPACE(*p)) + Py_RETURN_TRUE; + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + for (; p < e; p++) { + if (!ISSPACE(*p)) + Py_RETURN_FALSE; + } + Py_RETURN_TRUE; +} + + +PyDoc_STRVAR_shared(_Py_isalpha__doc__, +"B.isalpha() -> bool\n\ +\n\ +Return True if all characters in B are alphabetic\n\ +and there is at least one character in B, False otherwise."); + +PyObject* +_Py_bytes_isalpha(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + + /* Shortcut for single character strings */ + if (len == 1 && ISALPHA(*p)) + Py_RETURN_TRUE; + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + for (; p < e; p++) { + if (!ISALPHA(*p)) + Py_RETURN_FALSE; + } + Py_RETURN_TRUE; +} + + +PyDoc_STRVAR_shared(_Py_isalnum__doc__, +"B.isalnum() -> bool\n\ +\n\ +Return True if all characters in B are alphanumeric\n\ +and there is at least one character in B, False otherwise."); + +PyObject* +_Py_bytes_isalnum(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + + /* Shortcut for single character strings */ + if (len == 1 && ISALNUM(*p)) + Py_RETURN_TRUE; + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + for (; p < e; p++) { + if (!ISALNUM(*p)) + Py_RETURN_FALSE; + } + Py_RETURN_TRUE; +} + + +PyDoc_STRVAR_shared(_Py_isdigit__doc__, +"B.isdigit() -> bool\n\ +\n\ +Return True if all characters in B are digits\n\ +and there is at least one character in B, False otherwise."); + +PyObject* +_Py_bytes_isdigit(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + + /* Shortcut for single character strings */ + if (len == 1 && ISDIGIT(*p)) + Py_RETURN_TRUE; + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + for (; p < e; p++) { + if (!ISDIGIT(*p)) + Py_RETURN_FALSE; + } + Py_RETURN_TRUE; +} + + +PyDoc_STRVAR_shared(_Py_islower__doc__, +"B.islower() -> bool\n\ +\n\ +Return True if all cased characters in B are lowercase and there is\n\ +at least one cased character in B, False otherwise."); + +PyObject* +_Py_bytes_islower(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + int cased; + + /* Shortcut for single character strings */ + if (len == 1) + return PyBool_FromLong(ISLOWER(*p)); + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + cased = 0; + for (; p < e; p++) { + if (ISUPPER(*p)) + Py_RETURN_FALSE; + else if (!cased && ISLOWER(*p)) + cased = 1; + } + return PyBool_FromLong(cased); +} + + +PyDoc_STRVAR_shared(_Py_isupper__doc__, +"B.isupper() -> bool\n\ +\n\ +Return True if all cased characters in B are uppercase and there is\n\ +at least one cased character in B, False otherwise."); + +PyObject* +_Py_bytes_isupper(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + int cased; + + /* Shortcut for single character strings */ + if (len == 1) + return PyBool_FromLong(ISUPPER(*p)); + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + cased = 0; + for (; p < e; p++) { + if (ISLOWER(*p)) + Py_RETURN_FALSE; + else if (!cased && ISUPPER(*p)) + cased = 1; + } + return PyBool_FromLong(cased); +} + + +PyDoc_STRVAR_shared(_Py_istitle__doc__, +"B.istitle() -> bool\n\ +\n\ +Return True if B is a titlecased string and there is at least one\n\ +character in B, i.e. uppercase characters may only follow uncased\n\ +characters and lowercase characters only cased ones. Return False\n\ +otherwise."); + +PyObject* +_Py_bytes_istitle(const char *cptr, Py_ssize_t len) +{ + register const unsigned char *p + = (unsigned char *) cptr; + register const unsigned char *e; + int cased, previous_is_cased; + + /* Shortcut for single character strings */ + if (len == 1) + return PyBool_FromLong(ISUPPER(*p)); + + /* Special case for empty strings */ + if (len == 0) + Py_RETURN_FALSE; + + e = p + len; + cased = 0; + previous_is_cased = 0; + for (; p < e; p++) { + register const unsigned char ch = *p; + + if (ISUPPER(ch)) { + if (previous_is_cased) + Py_RETURN_FALSE; + previous_is_cased = 1; + cased = 1; + } + else if (ISLOWER(ch)) { + if (!previous_is_cased) + Py_RETURN_FALSE; + previous_is_cased = 1; + cased = 1; + } + else + previous_is_cased = 0; + } + return PyBool_FromLong(cased); +} + + +PyDoc_STRVAR_shared(_Py_lower__doc__, +"B.lower() -> copy of B\n\ +\n\ +Return a copy of B with all ASCII characters converted to lowercase."); + +void +_Py_bytes_lower(char *result, const char *cptr, Py_ssize_t len) +{ + Py_ssize_t i; + + /* + newobj = PyString_FromStringAndSize(NULL, len); + if (!newobj) + return NULL; + + s = PyString_AS_STRING(newobj); + */ + + Py_MEMCPY(result, cptr, len); + + for (i = 0; i < len; i++) { + int c = Py_CHARMASK(result[i]); + if (ISUPPER(c)) + result[i] = TOLOWER(c); + } +} + + +PyDoc_STRVAR_shared(_Py_upper__doc__, +"B.upper() -> copy of B\n\ +\n\ +Return a copy of B with all ASCII characters converted to uppercase."); + +void +_Py_bytes_upper(char *result, const char *cptr, Py_ssize_t len) +{ + Py_ssize_t i; + + /* + newobj = PyString_FromStringAndSize(NULL, len); + if (!newobj) + return NULL; + + s = PyString_AS_STRING(newobj); + */ + + Py_MEMCPY(result, cptr, len); + + for (i = 0; i < len; i++) { + int c = Py_CHARMASK(result[i]); + if (ISLOWER(c)) + result[i] = TOUPPER(c); + } +} + + +PyDoc_STRVAR_shared(_Py_title__doc__, +"B.title() -> copy of B\n\ +\n\ +Return a titlecased version of B, i.e. ASCII words start with uppercase\n\ +characters, all remaining cased characters have lowercase."); + +void +_Py_bytes_title(char *result, char *s, Py_ssize_t len) +{ + Py_ssize_t i; + int previous_is_cased = 0; + + /* + newobj = PyString_FromStringAndSize(NULL, len); + if (newobj == NULL) + return NULL; + s_new = PyString_AsString(newobj); + */ + for (i = 0; i < len; i++) { + int c = Py_CHARMASK(*s++); + if (ISLOWER(c)) { + if (!previous_is_cased) + c = TOUPPER(c); + previous_is_cased = 1; + } else if (ISUPPER(c)) { + if (previous_is_cased) + c = TOLOWER(c); + previous_is_cased = 1; + } else + previous_is_cased = 0; + *result++ = c; + } +} + + +PyDoc_STRVAR_shared(_Py_capitalize__doc__, +"B.capitalize() -> copy of B\n\ +\n\ +Return a copy of B with only its first character capitalized (ASCII)."); + +void +_Py_bytes_capitalize(char *result, char *s, Py_ssize_t len) +{ + Py_ssize_t i; + + /* + newobj = PyString_FromStringAndSize(NULL, len); + if (newobj == NULL) + return NULL; + s_new = PyString_AsString(newobj); + */ + if (0 < len) { + int c = Py_CHARMASK(*s++); + if (ISLOWER(c)) + *result = TOUPPER(c); + else + *result = c; + result++; + } + for (i = 1; i < len; i++) { + int c = Py_CHARMASK(*s++); + if (ISUPPER(c)) + *result = TOLOWER(c); + else + *result = c; + result++; + } +} + + +PyDoc_STRVAR_shared(_Py_swapcase__doc__, +"B.swapcase() -> copy of B\n\ +\n\ +Return a copy of B with uppercase ASCII characters converted\n\ +to lowercase ASCII and vice versa."); + +void +_Py_bytes_swapcase(char *result, char *s, Py_ssize_t len) +{ + Py_ssize_t i; + + /* + newobj = PyString_FromStringAndSize(NULL, len); + if (newobj == NULL) + return NULL; + s_new = PyString_AsString(newobj); + */ + for (i = 0; i < len; i++) { + int c = Py_CHARMASK(*s++); + if (ISLOWER(c)) { + *result = TOUPPER(c); + } + else if (ISUPPER(c)) { + *result = TOLOWER(c); + } + else + *result = c; + result++; + } +} + |