diff options
Diffstat (limited to 'storage/mroonga/vendor/groonga/lib/ts/ts_str.c')
| -rw-r--r-- | storage/mroonga/vendor/groonga/lib/ts/ts_str.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/storage/mroonga/vendor/groonga/lib/ts/ts_str.c b/storage/mroonga/vendor/groonga/lib/ts/ts_str.c new file mode 100644 index 00000000..9f200fa3 --- /dev/null +++ b/storage/mroonga/vendor/groonga/lib/ts/ts_str.c @@ -0,0 +1,191 @@ +/* -*- c-basic-offset: 2 -*- */ +/* + Copyright(C) 2015 Brazil + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License version 2.1 as published by the Free Software Foundation. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA +*/ + +#include "ts_str.h" + +#include <ctype.h> +#include <string.h> + +/*------------------------------------------------------------- + * Byte. + */ + +grn_ts_bool +grn_ts_byte_is_decimal(uint8_t byte) +{ + return (byte >= '0') && (byte <= '9'); +} + +grn_ts_bool +grn_ts_byte_is_name_char(uint8_t byte) +{ + /* + * Note: A table name allows '#', '@' and '-'. + * http://groonga.org/docs/reference/commands/table_create.html#name + */ + if (((byte >= '0') && (byte <= '9')) || ((byte >= 'A') && (byte <= 'Z')) || + ((byte >= 'a') && (byte <= 'z')) || (byte == '_')) { + return GRN_TRUE; + } + return GRN_FALSE; +} + +/*------------------------------------------------------------- + * String. + */ + +grn_ts_bool +grn_ts_str_starts_with(grn_ts_str str, grn_ts_str prefix) +{ + if (str.size < prefix.size) { + return GRN_FALSE; + } + return !memcmp(str.ptr, prefix.ptr, prefix.size); +} + +grn_ts_str +grn_ts_str_trim_left(grn_ts_str str) +{ + size_t i; + for (i = 0; i < str.size; i++) { + if (!isspace((uint8_t)str.ptr[i])) { + break; + } + } + str.ptr += i; + str.size -= i; + return str; +} + +grn_ts_str +grn_ts_str_trim_score_assignment(grn_ts_str str) +{ + grn_ts_str rest; + str = grn_ts_str_trim_left(str); + if (!grn_ts_str_starts_with(str, (grn_ts_str){ "_score", 6 })) { + return str; + } + rest.ptr = str.ptr + 6; + rest.size = str.size - 6; + rest = grn_ts_str_trim_left(rest); + if (!rest.size || (rest.ptr[0] != '=') || + ((rest.size >= 2) && (rest.ptr[1] == '='))) { + return str; + } + rest.ptr++; + rest.size--; + return grn_ts_str_trim_left(rest); +} + +grn_ts_bool +grn_ts_str_has_number_prefix(grn_ts_str str) +{ + if (!str.size) { + return GRN_FALSE; + } + if (grn_ts_byte_is_decimal(str.ptr[0])) { + return GRN_TRUE; + } + if (str.size == 1) { + return GRN_FALSE; + } + switch (str.ptr[0]) { + case '+': case '-': { + if (grn_ts_byte_is_decimal(str.ptr[1])) { + return GRN_TRUE; + } + if (str.size == 2) { + return GRN_FALSE; + } + return (str.ptr[1] == '.') && grn_ts_byte_is_decimal(str.ptr[2]); + } + case '.': { + return grn_ts_byte_is_decimal(str.ptr[1]); + } + default: { + return GRN_FALSE; + } + } +} + +grn_ts_bool +grn_ts_str_is_name_prefix(grn_ts_str str) +{ + size_t i; + for (i = 0; i < str.size; i++) { + if (!grn_ts_byte_is_name_char(str.ptr[i])) { + return GRN_FALSE; + } + } + return GRN_TRUE; +} + +grn_ts_bool +grn_ts_str_is_name(grn_ts_str str) +{ + if (!str.size) { + return GRN_FALSE; + } + return grn_ts_str_is_name_prefix(str); +} + +grn_ts_bool +grn_ts_str_is_true(grn_ts_str str) +{ + return (str.size == 4) && !memcmp(str.ptr, "true", 4); +} + +grn_ts_bool +grn_ts_str_is_false(grn_ts_str str) +{ + return (str.size == 5) && !memcmp(str.ptr, "false", 5); +} + +grn_ts_bool +grn_ts_str_is_bool(grn_ts_str str) +{ + return grn_ts_str_is_true(str) || grn_ts_str_is_false(str); +} + +grn_ts_bool +grn_ts_str_is_id_name(grn_ts_str str) +{ + return (str.size == GRN_COLUMN_NAME_ID_LEN) && + !memcmp(str.ptr, GRN_COLUMN_NAME_ID, GRN_COLUMN_NAME_ID_LEN); +} + +grn_ts_bool +grn_ts_str_is_score_name(grn_ts_str str) +{ + return (str.size == GRN_COLUMN_NAME_SCORE_LEN) && + !memcmp(str.ptr, GRN_COLUMN_NAME_SCORE, GRN_COLUMN_NAME_SCORE_LEN); +} + +grn_ts_bool +grn_ts_str_is_key_name(grn_ts_str str) +{ + return (str.size == GRN_COLUMN_NAME_KEY_LEN) && + !memcmp(str.ptr, GRN_COLUMN_NAME_KEY, GRN_COLUMN_NAME_KEY_LEN); +} + +grn_ts_bool +grn_ts_str_is_value_name(grn_ts_str str) +{ + return (str.size == GRN_COLUMN_NAME_VALUE_LEN) && + !memcmp(str.ptr, GRN_COLUMN_NAME_VALUE, GRN_COLUMN_NAME_VALUE_LEN); +} |