Serhiy Storchaka | ab8bcb3 | 2016-07-03 13:26:52 +0300 | [diff] [blame] | 1 | #define PY_SSIZE_T_CLEAN |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 2 | #include "Python.h" |
| 3 | #include "bytes_methods.h" |
| 4 | |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 5 | PyDoc_STRVAR_shared(_Py_isspace__doc__, |
| 6 | "B.isspace() -> bool\n\ |
| 7 | \n\ |
| 8 | Return True if all characters in B are whitespace\n\ |
| 9 | and there is at least one character in B, False otherwise."); |
| 10 | |
| 11 | PyObject* |
| 12 | _Py_bytes_isspace(const char *cptr, Py_ssize_t len) |
| 13 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 14 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 15 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 16 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 17 | |
| 18 | /* Shortcut for single character strings */ |
Eric Smith | 6dc46f5 | 2009-04-27 20:39:49 +0000 | [diff] [blame] | 19 | if (len == 1 && Py_ISSPACE(*p)) |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 20 | Py_RETURN_TRUE; |
| 21 | |
| 22 | /* Special case for empty strings */ |
| 23 | if (len == 0) |
| 24 | Py_RETURN_FALSE; |
| 25 | |
| 26 | e = p + len; |
| 27 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 28 | if (!Py_ISSPACE(*p)) |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 29 | Py_RETURN_FALSE; |
| 30 | } |
| 31 | Py_RETURN_TRUE; |
| 32 | } |
| 33 | |
| 34 | |
| 35 | PyDoc_STRVAR_shared(_Py_isalpha__doc__, |
| 36 | "B.isalpha() -> bool\n\ |
| 37 | \n\ |
| 38 | Return True if all characters in B are alphabetic\n\ |
| 39 | and there is at least one character in B, False otherwise."); |
| 40 | |
| 41 | PyObject* |
| 42 | _Py_bytes_isalpha(const char *cptr, Py_ssize_t len) |
| 43 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 44 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 45 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 46 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 47 | |
| 48 | /* Shortcut for single character strings */ |
Eric Smith | 6dc46f5 | 2009-04-27 20:39:49 +0000 | [diff] [blame] | 49 | if (len == 1 && Py_ISALPHA(*p)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 50 | Py_RETURN_TRUE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 51 | |
| 52 | /* Special case for empty strings */ |
| 53 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 54 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 55 | |
| 56 | e = p + len; |
| 57 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 58 | if (!Py_ISALPHA(*p)) |
| 59 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 60 | } |
| 61 | Py_RETURN_TRUE; |
| 62 | } |
| 63 | |
| 64 | |
| 65 | PyDoc_STRVAR_shared(_Py_isalnum__doc__, |
| 66 | "B.isalnum() -> bool\n\ |
| 67 | \n\ |
| 68 | Return True if all characters in B are alphanumeric\n\ |
| 69 | and there is at least one character in B, False otherwise."); |
| 70 | |
| 71 | PyObject* |
| 72 | _Py_bytes_isalnum(const char *cptr, Py_ssize_t len) |
| 73 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 74 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 75 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 76 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 77 | |
| 78 | /* Shortcut for single character strings */ |
Eric Smith | 6dc46f5 | 2009-04-27 20:39:49 +0000 | [diff] [blame] | 79 | if (len == 1 && Py_ISALNUM(*p)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 80 | Py_RETURN_TRUE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 81 | |
| 82 | /* Special case for empty strings */ |
| 83 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 84 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 85 | |
| 86 | e = p + len; |
| 87 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 88 | if (!Py_ISALNUM(*p)) |
| 89 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 90 | } |
| 91 | Py_RETURN_TRUE; |
| 92 | } |
| 93 | |
| 94 | |
INADA Naoki | a49ac99 | 2018-01-27 14:06:21 +0900 | [diff] [blame] | 95 | PyDoc_STRVAR_shared(_Py_isascii__doc__, |
| 96 | "B.isascii() -> bool\n\ |
| 97 | \n\ |
| 98 | Return True if B is empty or all characters in B are ASCII,\n\ |
| 99 | False otherwise."); |
| 100 | |
INADA Naoki | bea5706 | 2018-01-28 09:59:12 +0900 | [diff] [blame] | 101 | // Optimization is copied from ascii_decode in unicodeobject.c |
| 102 | /* Mask to quickly check whether a C 'long' contains a |
| 103 | non-ASCII, UTF8-encoded char. */ |
| 104 | #if (SIZEOF_LONG == 8) |
| 105 | # define ASCII_CHAR_MASK 0x8080808080808080UL |
| 106 | #elif (SIZEOF_LONG == 4) |
| 107 | # define ASCII_CHAR_MASK 0x80808080UL |
| 108 | #else |
| 109 | # error C 'long' size should be either 4 or 8! |
| 110 | #endif |
| 111 | |
INADA Naoki | a49ac99 | 2018-01-27 14:06:21 +0900 | [diff] [blame] | 112 | PyObject* |
| 113 | _Py_bytes_isascii(const char *cptr, Py_ssize_t len) |
| 114 | { |
INADA Naoki | bea5706 | 2018-01-28 09:59:12 +0900 | [diff] [blame] | 115 | const char *p = cptr; |
| 116 | const char *end = p + len; |
| 117 | const char *aligned_end = (const char *) _Py_ALIGN_DOWN(end, SIZEOF_LONG); |
| 118 | |
| 119 | while (p < end) { |
| 120 | /* Fast path, see in STRINGLIB(utf8_decode) in stringlib/codecs.h |
| 121 | for an explanation. */ |
| 122 | if (_Py_IS_ALIGNED(p, SIZEOF_LONG)) { |
| 123 | /* Help allocation */ |
| 124 | const char *_p = p; |
| 125 | while (_p < aligned_end) { |
| 126 | unsigned long value = *(unsigned long *) _p; |
| 127 | if (value & ASCII_CHAR_MASK) { |
| 128 | Py_RETURN_FALSE; |
| 129 | } |
| 130 | _p += SIZEOF_LONG; |
| 131 | } |
| 132 | p = _p; |
| 133 | if (_p == end) |
| 134 | break; |
| 135 | } |
| 136 | if ((unsigned char)*p & 0x80) { |
INADA Naoki | a49ac99 | 2018-01-27 14:06:21 +0900 | [diff] [blame] | 137 | Py_RETURN_FALSE; |
| 138 | } |
INADA Naoki | bea5706 | 2018-01-28 09:59:12 +0900 | [diff] [blame] | 139 | p++; |
INADA Naoki | a49ac99 | 2018-01-27 14:06:21 +0900 | [diff] [blame] | 140 | } |
| 141 | Py_RETURN_TRUE; |
| 142 | } |
| 143 | |
INADA Naoki | bea5706 | 2018-01-28 09:59:12 +0900 | [diff] [blame] | 144 | #undef ASCII_CHAR_MASK |
| 145 | |
INADA Naoki | a49ac99 | 2018-01-27 14:06:21 +0900 | [diff] [blame] | 146 | |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 147 | PyDoc_STRVAR_shared(_Py_isdigit__doc__, |
| 148 | "B.isdigit() -> bool\n\ |
| 149 | \n\ |
| 150 | Return True if all characters in B are digits\n\ |
| 151 | and there is at least one character in B, False otherwise."); |
| 152 | |
| 153 | PyObject* |
| 154 | _Py_bytes_isdigit(const char *cptr, Py_ssize_t len) |
| 155 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 156 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 157 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 158 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 159 | |
| 160 | /* Shortcut for single character strings */ |
Eric Smith | 6dc46f5 | 2009-04-27 20:39:49 +0000 | [diff] [blame] | 161 | if (len == 1 && Py_ISDIGIT(*p)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 162 | Py_RETURN_TRUE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 163 | |
| 164 | /* Special case for empty strings */ |
| 165 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 166 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 167 | |
| 168 | e = p + len; |
| 169 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 170 | if (!Py_ISDIGIT(*p)) |
| 171 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 172 | } |
| 173 | Py_RETURN_TRUE; |
| 174 | } |
| 175 | |
| 176 | |
| 177 | PyDoc_STRVAR_shared(_Py_islower__doc__, |
| 178 | "B.islower() -> bool\n\ |
| 179 | \n\ |
| 180 | Return True if all cased characters in B are lowercase and there is\n\ |
| 181 | at least one cased character in B, False otherwise."); |
| 182 | |
| 183 | PyObject* |
| 184 | _Py_bytes_islower(const char *cptr, Py_ssize_t len) |
| 185 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 186 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 187 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 188 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 189 | int cased; |
| 190 | |
| 191 | /* Shortcut for single character strings */ |
| 192 | if (len == 1) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 193 | return PyBool_FromLong(Py_ISLOWER(*p)); |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 194 | |
| 195 | /* Special case for empty strings */ |
| 196 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 197 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 198 | |
| 199 | e = p + len; |
| 200 | cased = 0; |
| 201 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 202 | if (Py_ISUPPER(*p)) |
| 203 | Py_RETURN_FALSE; |
| 204 | else if (!cased && Py_ISLOWER(*p)) |
| 205 | cased = 1; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 206 | } |
| 207 | return PyBool_FromLong(cased); |
| 208 | } |
| 209 | |
| 210 | |
| 211 | PyDoc_STRVAR_shared(_Py_isupper__doc__, |
| 212 | "B.isupper() -> bool\n\ |
| 213 | \n\ |
| 214 | Return True if all cased characters in B are uppercase and there is\n\ |
| 215 | at least one cased character in B, False otherwise."); |
| 216 | |
| 217 | PyObject* |
| 218 | _Py_bytes_isupper(const char *cptr, Py_ssize_t len) |
| 219 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 220 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 221 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 222 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 223 | int cased; |
| 224 | |
| 225 | /* Shortcut for single character strings */ |
| 226 | if (len == 1) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 227 | return PyBool_FromLong(Py_ISUPPER(*p)); |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 228 | |
| 229 | /* Special case for empty strings */ |
| 230 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 231 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 232 | |
| 233 | e = p + len; |
| 234 | cased = 0; |
| 235 | for (; p < e; p++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 236 | if (Py_ISLOWER(*p)) |
| 237 | Py_RETURN_FALSE; |
| 238 | else if (!cased && Py_ISUPPER(*p)) |
| 239 | cased = 1; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 240 | } |
| 241 | return PyBool_FromLong(cased); |
| 242 | } |
| 243 | |
| 244 | |
| 245 | PyDoc_STRVAR_shared(_Py_istitle__doc__, |
| 246 | "B.istitle() -> bool\n\ |
| 247 | \n\ |
| 248 | Return True if B is a titlecased string and there is at least one\n\ |
| 249 | character in B, i.e. uppercase characters may only follow uncased\n\ |
| 250 | characters and lowercase characters only cased ones. Return False\n\ |
| 251 | otherwise."); |
| 252 | |
| 253 | PyObject* |
| 254 | _Py_bytes_istitle(const char *cptr, Py_ssize_t len) |
| 255 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 256 | const unsigned char *p |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 257 | = (unsigned char *) cptr; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 258 | const unsigned char *e; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 259 | int cased, previous_is_cased; |
| 260 | |
| 261 | /* Shortcut for single character strings */ |
| 262 | if (len == 1) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 263 | return PyBool_FromLong(Py_ISUPPER(*p)); |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 264 | |
| 265 | /* Special case for empty strings */ |
| 266 | if (len == 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 267 | Py_RETURN_FALSE; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 268 | |
| 269 | e = p + len; |
| 270 | cased = 0; |
| 271 | previous_is_cased = 0; |
| 272 | for (; p < e; p++) { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 273 | const unsigned char ch = *p; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 274 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 275 | if (Py_ISUPPER(ch)) { |
| 276 | if (previous_is_cased) |
| 277 | Py_RETURN_FALSE; |
| 278 | previous_is_cased = 1; |
| 279 | cased = 1; |
| 280 | } |
| 281 | else if (Py_ISLOWER(ch)) { |
| 282 | if (!previous_is_cased) |
| 283 | Py_RETURN_FALSE; |
| 284 | previous_is_cased = 1; |
| 285 | cased = 1; |
| 286 | } |
| 287 | else |
| 288 | previous_is_cased = 0; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 289 | } |
| 290 | return PyBool_FromLong(cased); |
| 291 | } |
| 292 | |
| 293 | |
| 294 | PyDoc_STRVAR_shared(_Py_lower__doc__, |
| 295 | "B.lower() -> copy of B\n\ |
| 296 | \n\ |
| 297 | Return a copy of B with all ASCII characters converted to lowercase."); |
| 298 | |
| 299 | void |
| 300 | _Py_bytes_lower(char *result, const char *cptr, Py_ssize_t len) |
| 301 | { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 302 | Py_ssize_t i; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 303 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 304 | for (i = 0; i < len; i++) { |
Antoine Pitrou | 94f6fa6 | 2012-01-08 16:22:46 +0100 | [diff] [blame] | 305 | result[i] = Py_TOLOWER((unsigned char) cptr[i]); |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 306 | } |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | |
| 310 | PyDoc_STRVAR_shared(_Py_upper__doc__, |
| 311 | "B.upper() -> copy of B\n\ |
| 312 | \n\ |
| 313 | Return a copy of B with all ASCII characters converted to uppercase."); |
| 314 | |
| 315 | void |
| 316 | _Py_bytes_upper(char *result, const char *cptr, Py_ssize_t len) |
| 317 | { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 318 | Py_ssize_t i; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 319 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 320 | for (i = 0; i < len; i++) { |
Antoine Pitrou | 94f6fa6 | 2012-01-08 16:22:46 +0100 | [diff] [blame] | 321 | result[i] = Py_TOUPPER((unsigned char) cptr[i]); |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 322 | } |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | |
| 326 | PyDoc_STRVAR_shared(_Py_title__doc__, |
| 327 | "B.title() -> copy of B\n\ |
| 328 | \n\ |
| 329 | Return a titlecased version of B, i.e. ASCII words start with uppercase\n\ |
| 330 | characters, all remaining cased characters have lowercase."); |
| 331 | |
| 332 | void |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 333 | _Py_bytes_title(char *result, const char *s, Py_ssize_t len) |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 334 | { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 335 | Py_ssize_t i; |
| 336 | int previous_is_cased = 0; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 337 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 338 | for (i = 0; i < len; i++) { |
| 339 | int c = Py_CHARMASK(*s++); |
| 340 | if (Py_ISLOWER(c)) { |
| 341 | if (!previous_is_cased) |
| 342 | c = Py_TOUPPER(c); |
| 343 | previous_is_cased = 1; |
| 344 | } else if (Py_ISUPPER(c)) { |
| 345 | if (previous_is_cased) |
| 346 | c = Py_TOLOWER(c); |
| 347 | previous_is_cased = 1; |
| 348 | } else |
| 349 | previous_is_cased = 0; |
| 350 | *result++ = c; |
| 351 | } |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | |
| 355 | PyDoc_STRVAR_shared(_Py_capitalize__doc__, |
| 356 | "B.capitalize() -> copy of B\n\ |
| 357 | \n\ |
Senthil Kumaran | e51ee8a | 2010-07-05 12:00:56 +0000 | [diff] [blame] | 358 | Return a copy of B with only its first character capitalized (ASCII)\n\ |
| 359 | and the rest lower-cased."); |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 360 | |
| 361 | void |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 362 | _Py_bytes_capitalize(char *result, const char *s, Py_ssize_t len) |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 363 | { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 364 | Py_ssize_t i; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 365 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 366 | if (0 < len) { |
| 367 | int c = Py_CHARMASK(*s++); |
| 368 | if (Py_ISLOWER(c)) |
| 369 | *result = Py_TOUPPER(c); |
| 370 | else |
| 371 | *result = c; |
| 372 | result++; |
| 373 | } |
| 374 | for (i = 1; i < len; i++) { |
| 375 | int c = Py_CHARMASK(*s++); |
| 376 | if (Py_ISUPPER(c)) |
| 377 | *result = Py_TOLOWER(c); |
| 378 | else |
| 379 | *result = c; |
| 380 | result++; |
| 381 | } |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | |
| 385 | PyDoc_STRVAR_shared(_Py_swapcase__doc__, |
| 386 | "B.swapcase() -> copy of B\n\ |
| 387 | \n\ |
| 388 | Return a copy of B with uppercase ASCII characters converted\n\ |
| 389 | to lowercase ASCII and vice versa."); |
| 390 | |
| 391 | void |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 392 | _Py_bytes_swapcase(char *result, const char *s, Py_ssize_t len) |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 393 | { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 394 | Py_ssize_t i; |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 395 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 396 | for (i = 0; i < len; i++) { |
| 397 | int c = Py_CHARMASK(*s++); |
| 398 | if (Py_ISLOWER(c)) { |
| 399 | *result = Py_TOUPPER(c); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 400 | } |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 401 | else if (Py_ISUPPER(c)) { |
| 402 | *result = Py_TOLOWER(c); |
| 403 | } |
| 404 | else |
| 405 | *result = c; |
| 406 | result++; |
| 407 | } |
Gregory P. Smith | 60d241f | 2007-10-16 06:31:30 +0000 | [diff] [blame] | 408 | } |
| 409 | |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 410 | |
| 411 | PyDoc_STRVAR_shared(_Py_maketrans__doc__, |
| 412 | "B.maketrans(frm, to) -> translation table\n\ |
| 413 | \n\ |
Senthil Kumaran | 84e3ccc | 2011-06-27 09:06:45 -0700 | [diff] [blame] | 414 | Return a translation table (a bytes object of length 256) suitable\n\ |
| 415 | for use in the bytes or bytearray translate method where each byte\n\ |
| 416 | in frm is mapped to the byte at the same position in to.\n\ |
| 417 | The bytes objects frm and to must be of the same length."); |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 418 | |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 419 | PyObject * |
Serhiy Storchaka | 3dd3e26 | 2015-02-03 01:25:42 +0200 | [diff] [blame] | 420 | _Py_bytes_maketrans(Py_buffer *frm, Py_buffer *to) |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 421 | { |
Martin v. Löwis | 7252a6e | 2014-07-27 16:25:09 +0200 | [diff] [blame] | 422 | PyObject *res = NULL; |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 423 | Py_ssize_t i; |
| 424 | char *p; |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 425 | |
Serhiy Storchaka | 3dd3e26 | 2015-02-03 01:25:42 +0200 | [diff] [blame] | 426 | if (frm->len != to->len) { |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 427 | PyErr_Format(PyExc_ValueError, |
| 428 | "maketrans arguments must have same length"); |
Serhiy Storchaka | 3dd3e26 | 2015-02-03 01:25:42 +0200 | [diff] [blame] | 429 | return NULL; |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 430 | } |
| 431 | res = PyBytes_FromStringAndSize(NULL, 256); |
Serhiy Storchaka | 3dd3e26 | 2015-02-03 01:25:42 +0200 | [diff] [blame] | 432 | if (!res) |
| 433 | return NULL; |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 434 | p = PyBytes_AS_STRING(res); |
| 435 | for (i = 0; i < 256; i++) |
Antoine Pitrou | 47019e5 | 2010-08-15 17:41:31 +0000 | [diff] [blame] | 436 | p[i] = (char) i; |
Serhiy Storchaka | 3dd3e26 | 2015-02-03 01:25:42 +0200 | [diff] [blame] | 437 | for (i = 0; i < frm->len; i++) { |
| 438 | p[((unsigned char *)frm->buf)[i]] = ((char *)to->buf)[i]; |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 439 | } |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 440 | |
Antoine Pitrou | 9b49192 | 2010-08-15 17:38:46 +0000 | [diff] [blame] | 441 | return res; |
Georg Brandl | abc3877 | 2009-04-12 15:51:51 +0000 | [diff] [blame] | 442 | } |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 443 | |
| 444 | #define FASTSEARCH fastsearch |
| 445 | #define STRINGLIB(F) stringlib_##F |
| 446 | #define STRINGLIB_CHAR char |
| 447 | #define STRINGLIB_SIZEOF_CHAR 1 |
| 448 | |
| 449 | #include "stringlib/fastsearch.h" |
| 450 | #include "stringlib/count.h" |
| 451 | #include "stringlib/find.h" |
| 452 | |
| 453 | /* |
Oren Milman | 0042510 | 2017-03-13 00:37:05 +0200 | [diff] [blame] | 454 | Wraps stringlib_parse_args_finds() and additionally checks the first |
| 455 | argument type. |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 456 | |
Oren Milman | 0042510 | 2017-03-13 00:37:05 +0200 | [diff] [blame] | 457 | In case the first argument is a bytes-like object, sets it to subobj, |
| 458 | and doesn't touch the byte parameter. |
| 459 | In case it is an integer in range(0, 256), writes the integer value |
| 460 | to byte, and sets subobj to NULL. |
| 461 | |
| 462 | The other parameters are similar to those of |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 463 | stringlib_parse_args_finds(). |
| 464 | */ |
| 465 | |
| 466 | Py_LOCAL_INLINE(int) |
| 467 | parse_args_finds_byte(const char *function_name, PyObject *args, |
| 468 | PyObject **subobj, char *byte, |
| 469 | Py_ssize_t *start, Py_ssize_t *end) |
| 470 | { |
| 471 | PyObject *tmp_subobj; |
| 472 | Py_ssize_t ival; |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 473 | |
| 474 | if(!stringlib_parse_args_finds(function_name, args, &tmp_subobj, |
| 475 | start, end)) |
| 476 | return 0; |
| 477 | |
Oren Milman | 0042510 | 2017-03-13 00:37:05 +0200 | [diff] [blame] | 478 | if (PyObject_CheckBuffer(tmp_subobj)) { |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 479 | *subobj = tmp_subobj; |
| 480 | return 1; |
| 481 | } |
| 482 | |
Oren Milman | 0042510 | 2017-03-13 00:37:05 +0200 | [diff] [blame] | 483 | if (!PyIndex_Check(tmp_subobj)) { |
| 484 | PyErr_Format(PyExc_TypeError, |
| 485 | "argument should be integer or bytes-like object, " |
| 486 | "not '%.200s'", |
| 487 | Py_TYPE(tmp_subobj)->tp_name); |
| 488 | return 0; |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 489 | } |
| 490 | |
Oren Milman | 0042510 | 2017-03-13 00:37:05 +0200 | [diff] [blame] | 491 | ival = PyNumber_AsSsize_t(tmp_subobj, NULL); |
| 492 | if (ival == -1 && PyErr_Occurred()) { |
| 493 | return 0; |
| 494 | } |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 495 | if (ival < 0 || ival > 255) { |
| 496 | PyErr_SetString(PyExc_ValueError, "byte must be in range(0, 256)"); |
| 497 | return 0; |
| 498 | } |
| 499 | |
| 500 | *subobj = NULL; |
| 501 | *byte = (char)ival; |
| 502 | return 1; |
| 503 | } |
| 504 | |
| 505 | /* helper macro to fixup start/end slice values */ |
| 506 | #define ADJUST_INDICES(start, end, len) \ |
| 507 | if (end > len) \ |
| 508 | end = len; \ |
| 509 | else if (end < 0) { \ |
| 510 | end += len; \ |
| 511 | if (end < 0) \ |
| 512 | end = 0; \ |
| 513 | } \ |
| 514 | if (start < 0) { \ |
| 515 | start += len; \ |
| 516 | if (start < 0) \ |
| 517 | start = 0; \ |
| 518 | } |
| 519 | |
| 520 | Py_LOCAL_INLINE(Py_ssize_t) |
| 521 | find_internal(const char *str, Py_ssize_t len, |
| 522 | const char *function_name, PyObject *args, int dir) |
| 523 | { |
| 524 | PyObject *subobj; |
| 525 | char byte; |
| 526 | Py_buffer subbuf; |
| 527 | const char *sub; |
| 528 | Py_ssize_t sub_len; |
| 529 | Py_ssize_t start = 0, end = PY_SSIZE_T_MAX; |
| 530 | Py_ssize_t res; |
| 531 | |
| 532 | if (!parse_args_finds_byte(function_name, args, |
| 533 | &subobj, &byte, &start, &end)) |
| 534 | return -2; |
| 535 | |
| 536 | if (subobj) { |
| 537 | if (PyObject_GetBuffer(subobj, &subbuf, PyBUF_SIMPLE) != 0) |
| 538 | return -2; |
| 539 | |
| 540 | sub = subbuf.buf; |
| 541 | sub_len = subbuf.len; |
| 542 | } |
| 543 | else { |
| 544 | sub = &byte; |
| 545 | sub_len = 1; |
| 546 | } |
| 547 | |
| 548 | ADJUST_INDICES(start, end, len); |
| 549 | if (end - start < sub_len) |
| 550 | res = -1; |
| 551 | else if (sub_len == 1) { |
| 552 | if (dir > 0) |
| 553 | res = stringlib_find_char( |
| 554 | str + start, end - start, |
| 555 | *sub); |
| 556 | else |
| 557 | res = stringlib_rfind_char( |
| 558 | str + start, end - start, |
| 559 | *sub); |
| 560 | if (res >= 0) |
| 561 | res += start; |
| 562 | } |
| 563 | else { |
| 564 | if (dir > 0) |
| 565 | res = stringlib_find_slice( |
| 566 | str, len, |
| 567 | sub, sub_len, start, end); |
| 568 | else |
| 569 | res = stringlib_rfind_slice( |
| 570 | str, len, |
| 571 | sub, sub_len, start, end); |
| 572 | } |
| 573 | |
| 574 | if (subobj) |
| 575 | PyBuffer_Release(&subbuf); |
| 576 | |
| 577 | return res; |
| 578 | } |
| 579 | |
| 580 | PyDoc_STRVAR_shared(_Py_find__doc__, |
| 581 | "B.find(sub[, start[, end]]) -> int\n\ |
| 582 | \n\ |
| 583 | Return the lowest index in B where subsection sub is found,\n\ |
| 584 | such that sub is contained within B[start,end]. Optional\n\ |
| 585 | arguments start and end are interpreted as in slice notation.\n\ |
| 586 | \n\ |
| 587 | Return -1 on failure."); |
| 588 | |
| 589 | PyObject * |
| 590 | _Py_bytes_find(const char *str, Py_ssize_t len, PyObject *args) |
| 591 | { |
| 592 | Py_ssize_t result = find_internal(str, len, "find", args, +1); |
| 593 | if (result == -2) |
| 594 | return NULL; |
| 595 | return PyLong_FromSsize_t(result); |
| 596 | } |
| 597 | |
| 598 | PyDoc_STRVAR_shared(_Py_index__doc__, |
| 599 | "B.index(sub[, start[, end]]) -> int\n\ |
| 600 | \n\ |
Lisa Roach | 43ba886 | 2017-04-04 22:36:22 -0700 | [diff] [blame] | 601 | Return the lowest index in B where subsection sub is found,\n\ |
| 602 | such that sub is contained within B[start,end]. Optional\n\ |
| 603 | arguments start and end are interpreted as in slice notation.\n\ |
| 604 | \n\ |
| 605 | Raises ValueError when the subsection is not found."); |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 606 | |
| 607 | PyObject * |
| 608 | _Py_bytes_index(const char *str, Py_ssize_t len, PyObject *args) |
| 609 | { |
| 610 | Py_ssize_t result = find_internal(str, len, "index", args, +1); |
| 611 | if (result == -2) |
| 612 | return NULL; |
| 613 | if (result == -1) { |
| 614 | PyErr_SetString(PyExc_ValueError, |
| 615 | "subsection not found"); |
| 616 | return NULL; |
| 617 | } |
| 618 | return PyLong_FromSsize_t(result); |
| 619 | } |
| 620 | |
| 621 | PyDoc_STRVAR_shared(_Py_rfind__doc__, |
| 622 | "B.rfind(sub[, start[, end]]) -> int\n\ |
| 623 | \n\ |
| 624 | Return the highest index in B where subsection sub is found,\n\ |
| 625 | such that sub is contained within B[start,end]. Optional\n\ |
| 626 | arguments start and end are interpreted as in slice notation.\n\ |
| 627 | \n\ |
| 628 | Return -1 on failure."); |
| 629 | |
| 630 | PyObject * |
| 631 | _Py_bytes_rfind(const char *str, Py_ssize_t len, PyObject *args) |
| 632 | { |
| 633 | Py_ssize_t result = find_internal(str, len, "rfind", args, -1); |
| 634 | if (result == -2) |
| 635 | return NULL; |
| 636 | return PyLong_FromSsize_t(result); |
| 637 | } |
| 638 | |
| 639 | PyDoc_STRVAR_shared(_Py_rindex__doc__, |
| 640 | "B.rindex(sub[, start[, end]]) -> int\n\ |
| 641 | \n\ |
Lisa Roach | 43ba886 | 2017-04-04 22:36:22 -0700 | [diff] [blame] | 642 | Return the highest index in B where subsection sub is found,\n\ |
| 643 | such that sub is contained within B[start,end]. Optional\n\ |
| 644 | arguments start and end are interpreted as in slice notation.\n\ |
| 645 | \n\ |
| 646 | Raise ValueError when the subsection is not found."); |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 647 | |
| 648 | PyObject * |
| 649 | _Py_bytes_rindex(const char *str, Py_ssize_t len, PyObject *args) |
| 650 | { |
| 651 | Py_ssize_t result = find_internal(str, len, "rindex", args, -1); |
| 652 | if (result == -2) |
| 653 | return NULL; |
| 654 | if (result == -1) { |
| 655 | PyErr_SetString(PyExc_ValueError, |
| 656 | "subsection not found"); |
| 657 | return NULL; |
| 658 | } |
| 659 | return PyLong_FromSsize_t(result); |
| 660 | } |
| 661 | |
| 662 | PyDoc_STRVAR_shared(_Py_count__doc__, |
| 663 | "B.count(sub[, start[, end]]) -> int\n\ |
| 664 | \n\ |
| 665 | Return the number of non-overlapping occurrences of subsection sub in\n\ |
| 666 | bytes B[start:end]. Optional arguments start and end are interpreted\n\ |
| 667 | as in slice notation."); |
| 668 | |
| 669 | PyObject * |
| 670 | _Py_bytes_count(const char *str, Py_ssize_t len, PyObject *args) |
| 671 | { |
| 672 | PyObject *sub_obj; |
| 673 | const char *sub; |
| 674 | Py_ssize_t sub_len; |
| 675 | char byte; |
| 676 | Py_ssize_t start = 0, end = PY_SSIZE_T_MAX; |
| 677 | |
| 678 | Py_buffer vsub; |
| 679 | PyObject *count_obj; |
| 680 | |
| 681 | if (!parse_args_finds_byte("count", args, |
| 682 | &sub_obj, &byte, &start, &end)) |
| 683 | return NULL; |
| 684 | |
| 685 | if (sub_obj) { |
| 686 | if (PyObject_GetBuffer(sub_obj, &vsub, PyBUF_SIMPLE) != 0) |
| 687 | return NULL; |
| 688 | |
| 689 | sub = vsub.buf; |
| 690 | sub_len = vsub.len; |
| 691 | } |
| 692 | else { |
| 693 | sub = &byte; |
| 694 | sub_len = 1; |
| 695 | } |
| 696 | |
| 697 | ADJUST_INDICES(start, end, len); |
| 698 | |
| 699 | count_obj = PyLong_FromSsize_t( |
| 700 | stringlib_count(str + start, end - start, sub, sub_len, PY_SSIZE_T_MAX) |
| 701 | ); |
| 702 | |
| 703 | if (sub_obj) |
| 704 | PyBuffer_Release(&vsub); |
| 705 | |
| 706 | return count_obj; |
| 707 | } |
| 708 | |
| 709 | int |
| 710 | _Py_bytes_contains(const char *str, Py_ssize_t len, PyObject *arg) |
| 711 | { |
Serhiy Storchaka | f9efb8b | 2016-07-10 12:37:30 +0300 | [diff] [blame] | 712 | Py_ssize_t ival = PyNumber_AsSsize_t(arg, NULL); |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 713 | if (ival == -1 && PyErr_Occurred()) { |
| 714 | Py_buffer varg; |
| 715 | Py_ssize_t pos; |
| 716 | PyErr_Clear(); |
| 717 | if (PyObject_GetBuffer(arg, &varg, PyBUF_SIMPLE) != 0) |
| 718 | return -1; |
| 719 | pos = stringlib_find(str, len, |
| 720 | varg.buf, varg.len, 0); |
| 721 | PyBuffer_Release(&varg); |
| 722 | return pos >= 0; |
| 723 | } |
| 724 | if (ival < 0 || ival >= 256) { |
| 725 | PyErr_SetString(PyExc_ValueError, "byte must be in range(0, 256)"); |
| 726 | return -1; |
| 727 | } |
| 728 | |
| 729 | return memchr(str, (int) ival, len) != NULL; |
| 730 | } |
| 731 | |
| 732 | |
| 733 | /* Matches the end (direction >= 0) or start (direction < 0) of the buffer |
| 734 | * against substr, using the start and end arguments. Returns |
| 735 | * -1 on error, 0 if not found and 1 if found. |
| 736 | */ |
Benjamin Peterson | 621b430 | 2016-09-09 13:54:34 -0700 | [diff] [blame] | 737 | static int |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 738 | tailmatch(const char *str, Py_ssize_t len, PyObject *substr, |
| 739 | Py_ssize_t start, Py_ssize_t end, int direction) |
| 740 | { |
| 741 | Py_buffer sub_view = {NULL, NULL}; |
| 742 | const char *sub; |
| 743 | Py_ssize_t slen; |
| 744 | |
| 745 | if (PyBytes_Check(substr)) { |
| 746 | sub = PyBytes_AS_STRING(substr); |
| 747 | slen = PyBytes_GET_SIZE(substr); |
| 748 | } |
| 749 | else { |
| 750 | if (PyObject_GetBuffer(substr, &sub_view, PyBUF_SIMPLE) != 0) |
| 751 | return -1; |
| 752 | sub = sub_view.buf; |
| 753 | slen = sub_view.len; |
| 754 | } |
| 755 | |
| 756 | ADJUST_INDICES(start, end, len); |
| 757 | |
| 758 | if (direction < 0) { |
| 759 | /* startswith */ |
| 760 | if (start + slen > len) |
| 761 | goto notfound; |
| 762 | } else { |
| 763 | /* endswith */ |
| 764 | if (end - start < slen || start > len) |
| 765 | goto notfound; |
| 766 | |
| 767 | if (end - slen > start) |
| 768 | start = end - slen; |
| 769 | } |
| 770 | if (end - start < slen) |
| 771 | goto notfound; |
| 772 | if (memcmp(str + start, sub, slen) != 0) |
| 773 | goto notfound; |
| 774 | |
| 775 | PyBuffer_Release(&sub_view); |
| 776 | return 1; |
| 777 | |
| 778 | notfound: |
| 779 | PyBuffer_Release(&sub_view); |
| 780 | return 0; |
| 781 | } |
| 782 | |
Benjamin Peterson | 621b430 | 2016-09-09 13:54:34 -0700 | [diff] [blame] | 783 | static PyObject * |
Serhiy Storchaka | dd40fc3 | 2016-05-04 22:23:26 +0300 | [diff] [blame] | 784 | _Py_bytes_tailmatch(const char *str, Py_ssize_t len, |
| 785 | const char *function_name, PyObject *args, |
| 786 | int direction) |
| 787 | { |
| 788 | Py_ssize_t start = 0; |
| 789 | Py_ssize_t end = PY_SSIZE_T_MAX; |
| 790 | PyObject *subobj; |
| 791 | int result; |
| 792 | |
| 793 | if (!stringlib_parse_args_finds(function_name, args, &subobj, &start, &end)) |
| 794 | return NULL; |
| 795 | if (PyTuple_Check(subobj)) { |
| 796 | Py_ssize_t i; |
| 797 | for (i = 0; i < PyTuple_GET_SIZE(subobj); i++) { |
| 798 | result = tailmatch(str, len, PyTuple_GET_ITEM(subobj, i), |
| 799 | start, end, direction); |
| 800 | if (result == -1) |
| 801 | return NULL; |
| 802 | else if (result) { |
| 803 | Py_RETURN_TRUE; |
| 804 | } |
| 805 | } |
| 806 | Py_RETURN_FALSE; |
| 807 | } |
| 808 | result = tailmatch(str, len, subobj, start, end, direction); |
| 809 | if (result == -1) { |
| 810 | if (PyErr_ExceptionMatches(PyExc_TypeError)) |
| 811 | PyErr_Format(PyExc_TypeError, |
| 812 | "%s first arg must be bytes or a tuple of bytes, " |
| 813 | "not %s", |
| 814 | function_name, Py_TYPE(subobj)->tp_name); |
| 815 | return NULL; |
| 816 | } |
| 817 | else |
| 818 | return PyBool_FromLong(result); |
| 819 | } |
| 820 | |
| 821 | PyDoc_STRVAR_shared(_Py_startswith__doc__, |
| 822 | "B.startswith(prefix[, start[, end]]) -> bool\n\ |
| 823 | \n\ |
| 824 | Return True if B starts with the specified prefix, False otherwise.\n\ |
| 825 | With optional start, test B beginning at that position.\n\ |
| 826 | With optional end, stop comparing B at that position.\n\ |
| 827 | prefix can also be a tuple of bytes to try."); |
| 828 | |
| 829 | PyObject * |
| 830 | _Py_bytes_startswith(const char *str, Py_ssize_t len, PyObject *args) |
| 831 | { |
| 832 | return _Py_bytes_tailmatch(str, len, "startswith", args, -1); |
| 833 | } |
| 834 | |
| 835 | PyDoc_STRVAR_shared(_Py_endswith__doc__, |
| 836 | "B.endswith(suffix[, start[, end]]) -> bool\n\ |
| 837 | \n\ |
| 838 | Return True if B ends with the specified suffix, False otherwise.\n\ |
| 839 | With optional start, test B beginning at that position.\n\ |
| 840 | With optional end, stop comparing B at that position.\n\ |
| 841 | suffix can also be a tuple of bytes to try."); |
| 842 | |
| 843 | PyObject * |
| 844 | _Py_bytes_endswith(const char *str, Py_ssize_t len, PyObject *args) |
| 845 | { |
| 846 | return _Py_bytes_tailmatch(str, len, "endswith", args, +1); |
| 847 | } |
| 848 | |
| 849 | PyDoc_STRVAR_shared(_Py_expandtabs__doc__, |
| 850 | "B.expandtabs(tabsize=8) -> copy of B\n\ |
| 851 | \n\ |
| 852 | Return a copy of B where all tab characters are expanded using spaces.\n\ |
| 853 | If tabsize is not given, a tab size of 8 characters is assumed."); |
| 854 | |
| 855 | PyDoc_STRVAR_shared(_Py_ljust__doc__, |
| 856 | "B.ljust(width[, fillchar]) -> copy of B\n" |
| 857 | "\n" |
| 858 | "Return B left justified in a string of length width. Padding is\n" |
| 859 | "done using the specified fill character (default is a space)."); |
| 860 | |
| 861 | PyDoc_STRVAR_shared(_Py_rjust__doc__, |
| 862 | "B.rjust(width[, fillchar]) -> copy of B\n" |
| 863 | "\n" |
| 864 | "Return B right justified in a string of length width. Padding is\n" |
| 865 | "done using the specified fill character (default is a space)"); |
| 866 | |
| 867 | PyDoc_STRVAR_shared(_Py_center__doc__, |
| 868 | "B.center(width[, fillchar]) -> copy of B\n" |
| 869 | "\n" |
| 870 | "Return B centered in a string of length width. Padding is\n" |
| 871 | "done using the specified fill character (default is a space)."); |
| 872 | |
| 873 | PyDoc_STRVAR_shared(_Py_zfill__doc__, |
| 874 | "B.zfill(width) -> copy of B\n" |
| 875 | "\n" |
| 876 | "Pad a numeric string B with zeros on the left, to fill a field\n" |
| 877 | "of the specified width. B is never truncated."); |