daitch_mokotoff module - Mailing list pgsql-hackers
| From | Dag Lem |
|---|---|
| Subject | daitch_mokotoff module |
| Date | |
| Msg-id | yger1atbgfy.fsf@sid.nimrod.no Whole thread Raw |
| Responses |
Re: daitch_mokotoff module
Re: daitch_mokotoff module |
| List | pgsql-hackers |
Hello, Please find attached a patch for the daitch_mokotoff module. This implements the Daitch-Mokotoff Soundex System, as described in https://www.avotaynu.com/soundex.htm The module is used in production at Finance Norway. In order to verify correctness, I have compared generated soundex codes with corresponding results from the implementation by Stephen P. Morse at https://stevemorse.org/census/soundex.html Where soundex codes differ, the daitch_mokotoff module has been found to be correct. The Morse implementation uses a few unofficial rules, and also has an error in the handling of adjacent identical code digits. Please see daitch_mokotoff.c for further references and comments. For reference, detailed instructions for soundex code comparison are attached. Best regards Dag Lem diff --git a/contrib/Makefile b/contrib/Makefile index 87bf87ab90..5e1111a729 100644 --- a/contrib/Makefile +++ b/contrib/Makefile @@ -14,6 +14,7 @@ SUBDIRS = \ btree_gist \ citext \ cube \ + daitch_mokotoff \ dblink \ dict_int \ dict_xsyn \ diff --git a/contrib/daitch_mokotoff/Makefile b/contrib/daitch_mokotoff/Makefile new file mode 100644 index 0000000000..baec5e31d4 --- /dev/null +++ b/contrib/daitch_mokotoff/Makefile @@ -0,0 +1,25 @@ +# contrib/daitch_mokotoff/Makefile + +MODULE_big = daitch_mokotoff +OBJS = \ + $(WIN32RES) \ + daitch_mokotoff.o + +EXTENSION = daitch_mokotoff +DATA = daitch_mokotoff--1.0.sql +PGFILEDESC = "daitch_mokotoff - Daitch-Mokotoff Soundex System" + +HEADERS = daitch_mokotoff.h + +REGRESS = daitch_mokotoff + +ifdef USE_PGXS +PG_CONFIG = pg_config +PGXS := $(shell $(PG_CONFIG) --pgxs) +include $(PGXS) +else +subdir = contrib/daitch_mokotoff +top_builddir = ../.. +include $(top_builddir)/src/Makefile.global +include $(top_srcdir)/contrib/contrib-global.mk +endif diff --git a/contrib/daitch_mokotoff/daitch_mokotoff--1.0.sql b/contrib/daitch_mokotoff/daitch_mokotoff--1.0.sql new file mode 100644 index 0000000000..0b5a643175 --- /dev/null +++ b/contrib/daitch_mokotoff/daitch_mokotoff--1.0.sql @@ -0,0 +1,8 @@ +/* contrib/daitch_mokotoff/daitch_mokotoff--1.0.sql */ + +-- complain if script is sourced in psql, rather than via CREATE EXTENSION +\echo Use "CREATE EXTENSION daitch_mokotoff" to load this file. \quit + +CREATE FUNCTION daitch_mokotoff(text) RETURNS text +AS 'MODULE_PATHNAME', 'daitch_mokotoff' +LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; diff --git a/contrib/daitch_mokotoff/daitch_mokotoff.c b/contrib/daitch_mokotoff/daitch_mokotoff.c new file mode 100644 index 0000000000..9e66aee434 --- /dev/null +++ b/contrib/daitch_mokotoff/daitch_mokotoff.c @@ -0,0 +1,551 @@ +/* + * Daitch-Mokotoff Soundex + * + * Copyright (c) 2021 Finance Norway + * Author: Dag Lem <dag@nimrod.no> + * + * This implementation of the Daitch-Mokotoff Soundex System aims at high + * performance. + * + * - The processing of each phoneme is initiated by an O(1) table lookup. + * - For phonemes containing more than one character, a coding tree is traversed + * to process the complete phoneme. + * - The (alternate) soundex codes are produced digit by digit in-place in + * another tree structure. + * + * References: + * + * https://www.avotaynu.com/soundex.htm + * https://www.jewishgen.org/InfoFiles/Soundex.html + * https://familypedia.fandom.com/wiki/Daitch-Mokotoff_Soundex + * https://stevemorse.org/phoneticinfo.htm (dmlat.php, dmsoundex.php) + * https://github.com/apache/commons-codec/ (dmrules.txt, DaitchMokotoffSoundex.java) + * https://metacpan.org/pod/Text::Phonetic (DaitchMokotoff.pm) + * + * A few notes on other implementations: + * + * - "J" is considered a vowel in dmlat.php + * - The official rules for "RS" are commented out in dmlat.php + * - Adjacent identical code digits are not collapsed correctly in dmsoundex.php + * when double digit codes are involved. E.g. "BESST" yields 744300 instead of + * 743000 as for "BEST". + * - "Y" is not considered a vowel in DaitchMokotoffSoundex.java + * - Both dmlat.php and dmrules.txt have the same unofficial rules for "UE". + * - Coding of MN/NM + M/N differs between dmsoundex.php and DaitchMokotoffSoundex.java + * - Neither dmsoundex.php nor DaitchMokotoffSoundex.java yields all valid codes for e.g. + * "CJC" (550000 540000 545000 450000 400000 440000). + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose, without fee, and without a written agreement + * is hereby granted, provided that the above copyright notice and this + * paragraph and the following two paragraphs appear in all copies. + * + * IN NO EVENT SHALL THE AUTHOR OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING + * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS + * DOCUMENTATION, EVEN IF THE AUTHOR OR DISTRIBUTORS HAVE BEEN ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * THE AUTHOR AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE AUTHOR AND DISTRIBUTORS HAS NO OBLIGATIONS TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. +*/ + +#include "daitch_mokotoff.h" + +#ifndef DM_MAIN + +#include "postgres.h" +#include "utils/builtins.h" +#include "mb/pg_wchar.h" + +#else /* DM_MAIN */ + +#include <stdio.h> + +#endif /* DM_MAIN */ + +#include <ctype.h> +#include <stdlib.h> +#include <string.h> + + +/* Internal C implementation */ +static char *_daitch_mokotoff(char *word, char *soundex, size_t n); + + +#ifndef DM_MAIN + +PG_MODULE_MAGIC; + +PG_FUNCTION_INFO_V1(daitch_mokotoff); +Datum +daitch_mokotoff(PG_FUNCTION_ARGS) +{ + text *arg = PG_GETARG_TEXT_PP(0); + char *string, + *tmp_soundex; + text *soundex; + + /* + * The maximum theoretical soundex size is several KB, however in practice + * anything but contrived synthetic inputs will yield a soundex size of + * less than 100 bytes. We thus allocate and free a temporary work buffer, + * and return only the actual soundex result. + */ + string = pg_server_to_any(text_to_cstring(arg), VARSIZE_ANY_EXHDR(arg), PG_UTF8); + tmp_soundex = palloc(DM_MAX_SOUNDEX_CHARS); + + if (!(tmp_soundex && _daitch_mokotoff(string, tmp_soundex, DM_MAX_SOUNDEX_CHARS))) + { + pfree(tmp_soundex); + ereport(ERROR, + (errcode(ERRCODE_OUT_OF_MEMORY), + errmsg("unable to allocate temporary memory for soundex"))); + } + + soundex = cstring_to_text(pg_any_to_server(tmp_soundex, strlen(tmp_soundex), PG_UTF8)); + pfree(tmp_soundex); + + PG_RETURN_TEXT_P(soundex); +} + +#endif /* DM_MAIN */ + + +typedef dm_node dm_nodes[DM_MAX_NODES]; +typedef dm_node * dm_leaves[DM_MAX_LEAVES]; + + +static const dm_node start_node = { + .soundex_length = 0, + .soundex = "000000 ", /* Six digits + joining space */ + .is_leaf = 0, + .last_update = 0, + .code_digit = '\0', + .prev_code_digits = {'\0', '\0'}, + .next_code_digits = {'\0', '\0'}, + .next_nodes = {NULL} +}; + + +static void +initialize_node(dm_node * node, int last_update) +{ + if (node->last_update < last_update) + { + node->prev_code_digits[0] = node->next_code_digits[0]; + node->prev_code_digits[1] = node->next_code_digits[1]; + node->next_code_digits[0] = '\0'; + node->next_code_digits[1] = '\0'; + node->is_leaf = 0; + node->last_update = last_update; + } +} + + +static void +add_next_code_digit(dm_node * node, char code_digit) +{ + if (!node->next_code_digits[0]) + { + node->next_code_digits[0] = code_digit; + } + else if (node->next_code_digits[0] != code_digit) + { + node->next_code_digits[1] = code_digit; + } +} + + +static void +set_leaf(dm_leaves leaves_next, int *num_leaves_next, dm_node * node) +{ + if (!node->is_leaf) + { + node->is_leaf = 1; + leaves_next[(*num_leaves_next)++] = node; + } +} + + +static dm_node * find_or_create_node(dm_nodes nodes, int *num_nodes, dm_node * node, char code_digit) +{ + dm_node **next_nodes; + dm_node *next_node; + + for (next_nodes = node->next_nodes; (next_node = *next_nodes); next_nodes++) + { + if (next_node->code_digit == code_digit) + { + return next_node; + } + } + + next_node = &nodes[(*num_nodes)++]; + *next_nodes = next_node; + + *next_node = start_node; + memcpy(next_node->soundex, node->soundex, sizeof(next_node->soundex)); + next_node->soundex_length = node->soundex_length; + next_node->soundex[next_node->soundex_length++] = code_digit; + next_node->code_digit = code_digit; + + return next_node; +} + + +static int +update_node(dm_nodes nodes, dm_node * node, int *num_nodes, dm_leaves leaves_next, int *num_leaves_next, int char_number,char next_code_digit, char next_code_digit_2) +{ + int i; + int num_dirty_nodes = 0; + dm_node *dirty_nodes[2]; + + initialize_node(node, char_number); + + if (node->soundex_length == DM_MAX_CODE_DIGITS) + { + /* Keep completed soundex code. */ + set_leaf(leaves_next, num_leaves_next, node); + return 0; + } + + if (next_code_digit == 'X' || + node->prev_code_digits[0] == next_code_digit || + node->prev_code_digits[1] == next_code_digit) + { + /* The code digit is the same as one of the previous (i.e. not added). */ + dirty_nodes[num_dirty_nodes++] = node; + } + + if (next_code_digit != 'X' && + (node->prev_code_digits[0] != next_code_digit || + node->prev_code_digits[1])) + { + /* The code digit is different from one of the previous (i.e. added). */ + node = find_or_create_node(nodes, num_nodes, node, next_code_digit); + initialize_node(node, char_number); + dirty_nodes[num_dirty_nodes++] = node; + } + + for (i = 0; i < num_dirty_nodes; i++) + { + /* Add code digit leading to the current node. */ + add_next_code_digit(dirty_nodes[i], next_code_digit); + + if (next_code_digit_2) + { + update_node(nodes, dirty_nodes[i], num_nodes, leaves_next, num_leaves_next, char_number, next_code_digit_2,'\0'); + } + else + { + set_leaf(leaves_next, num_leaves_next, dirty_nodes[i]); + } + } + + return 1; +} + + +static int +update_leaves(dm_nodes nodes, int *num_nodes, dm_leaves leaves[2], int *ix_leaves, int *num_leaves, int char_number, dm_codescodes) +{ + int i, + j; + char *code; + int num_leaves_next = 0; + int ix_leaves_next = (*ix_leaves + 1) % 2; + int finished = 1; + + for (i = 0; i < *num_leaves; i++) + { + dm_node *node = leaves[*ix_leaves][i]; + + /* One or two alternate code sequences. */ + for (j = 0; j < 2 && (code = codes[j]) && code[0]; j++) + { + /* One or two sequential code digits. */ + if (update_node(nodes, node, num_nodes, leaves[ix_leaves_next], &num_leaves_next, char_number, code[0], code[1])) + { + finished = 0; + } + } + } + + *ix_leaves = ix_leaves_next; + *num_leaves = num_leaves_next; + + return finished; +} + + +static const char tr_accents_iso8859_1[] = +/* +"ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ" +*/ +"AAAAAAECEEEEIIIIDNOOOOO*OUUUUYDsaaaaaaeceeeeiiiidnooooo/ouuuuydy"; + +static char +unaccent_iso8859_1(unsigned char c) +{ + return c >= 192 ? tr_accents_iso8859_1[c - 192] : c; +} + + +/* Convert an UTF-8 character to ISO-8859-1. + * Unconvertable characters are returned as '?'. + * NB! Beware of the domain specific conversion of Ą, Ę, and Ţ/Ț. + */ +static char +utf8_to_iso8859_1(char *str, int *len) +{ + const char unknown = '?'; + unsigned char c; + unsigned int code_point; + + *len = 1; + c = (unsigned char) str[0]; + if (c < 0x80) + { + /* ASCII code point. */ + return c; + } + else if (c < 0xE0) + { + /* Two-byte character. */ + if (!str[1]) + { + /* The UTF-8 character is cut short (invalid code point). */ + return unknown; + } + *len = 2; + code_point = ((c & 0x1F) << 6) | (str[1] & 0x3F); + if (code_point < 0x100) + { + /* ISO-8859-1 code point. */ + return code_point; + } + else if (code_point == 0x0104 || code_point == 0x0105) + { + /* Ą/ą */ + return '['; + } + else if (code_point == 0x0118 || code_point == 0x0119) + { + /* Ę/ę */ + return '\\'; + } + else if (code_point == 0x0162 || code_point == 0x0163 || + code_point == 0x021A || code_point == 0x021B) + { + /* Ţ/ţ or Ț/ț */ + return ']'; + } + else + { + return unknown; + } + } + else if (c < 0xF0) + { + /* Three-byte character. */ + if (!str[2]) + { + /* The UTF-8 character is cut short (invalid code point). */ + *len = 2; + } + else + { + *len = 3; + } + return unknown; + } + else + { + /* Four-byte character. */ + if (!str[3]) + { + /* The UTF-8 character is cut short (invalid code point). */ + *len = 3; + } + else + { + *len = 4; + } + return unknown; + } +} + + +static char +read_char(char *str, int *len) +{ + return toupper(unaccent_iso8859_1(utf8_to_iso8859_1(str, len))); +} + + +static char +read_valid_char(char *str, int *len) +{ + int c; + int i, + ilen; + + for (i = 0, ilen = 0; (c = read_char(&str[i], &ilen)) && (c < 'A' || c > ']'); i += ilen) + { + } + + *len = i + ilen; + return c; +} + + +static char * +_daitch_mokotoff(char *word, char *soundex, size_t n) +{ + int c, + cmp; + int i, + ilen, + i_ok, + j, + jlen, + k; + int first_letter = 1; + int ix_leaves = 0; + int num_nodes = 0, + num_leaves = 0; + dm_letter *letter, + *letters; + dm_codes *codes_ok, + codes; + + dm_node *nodes = malloc(sizeof(dm_nodes)); + dm_leaves *leaves = malloc(2 * sizeof(dm_leaves)); + + if (!nodes || !leaves) + { + /* Out of memory - clean up and return. */ + free(leaves); + free(nodes); + *soundex = '\0'; + return NULL; + } + + /* Starting point. */ + nodes[num_nodes++] = start_node; + leaves[ix_leaves][num_leaves++] = &nodes[0]; + + for (i = 0; (c = read_valid_char(&word[i], &ilen)); i += ilen) + { + /* First letter in sequence. */ + letter = &letter_[c - 'A']; + codes_ok = letter->codes; + i_ok = i; + + /* Subsequent letters. */ + for (j = i + ilen; (letters = letter->letters) && (c = read_valid_char(&word[j], &jlen)); j += jlen) + { + for (k = 0; (cmp = letters[k].letter); k++) + { + if (cmp == c) + { + /* Coding for letter found. */ + break; + } + } + if (!cmp) + { + /* The sequence of letters has no coding. */ + break; + } + + letter = &letters[k]; + if (letter->codes) + { + codes_ok = letter->codes; + i_ok = j; + ilen = jlen; + } + } + + /* Determine which code to use. */ + if (first_letter) + { + /* This is the first letter. */ + j = 0; + first_letter = 0; + } + else if ((c = read_valid_char(&word[i_ok + ilen], &jlen)) && strchr(DM_VOWELS, c)) + { + /* The next letter is a vowel. */ + j = 1; + } + else + { + /* All other cases. */ + j = 2; + } + memcpy(codes, codes_ok[j], sizeof(codes)); + + /* Update leaves. */ + if (update_leaves(nodes, &num_nodes, leaves, &ix_leaves, &num_leaves, i, codes)) + { + /* All soundex codes are completed to six digits. */ + break; + } + + /* Prepare for next letter sequence. */ + i = i_ok; + } + + /* Concatenate all generated soundex codes. */ + for (i = 0, j = 0; i < num_leaves && j + DM_MAX_CODE_DIGITS + 1 <= n; i++, j += DM_MAX_CODE_DIGITS + 1) + { + memcpy(&soundex[j], leaves[ix_leaves][i]->soundex, DM_MAX_CODE_DIGITS + 1); + } + + /* Terminate string. */ + soundex[j - (j != 0)] = '\0'; + + free(leaves); + free(nodes); + + return soundex; +} + + +#ifdef DM_MAIN + +/* For testing */ + +int +main(int argc, char **argv) +{ + char *soundex; + + if (argc != 2) + { + fprintf(stderr, "Usage: %s string\n", argv[0]); + return -1; + } + + soundex = malloc(DM_MAX_SOUNDEX_CHARS); + + if (!_daitch_mokotoff(argv[1], soundex, DM_MAX_SOUNDEX_CHARS)) + { + free(soundex); + fprintf(stderr, "Unable to allocate memory for soundex trees\n"); + return -1; + } + + printf("%s\n", soundex); + free(soundex); + + return 0; +} + +#endif diff --git a/contrib/daitch_mokotoff/daitch_mokotoff.control b/contrib/daitch_mokotoff/daitch_mokotoff.control new file mode 100644 index 0000000000..c5aed8e46e --- /dev/null +++ b/contrib/daitch_mokotoff/daitch_mokotoff.control @@ -0,0 +1,5 @@ +# daitch_mokotoff extension +comment = 'Daitch-Mokotoff Soundex System' +default_version = '1.0' +module_pathname = '$libdir/daitch_mokotoff' +relocatable = true diff --git a/contrib/daitch_mokotoff/daitch_mokotoff.h b/contrib/daitch_mokotoff/daitch_mokotoff.h new file mode 100644 index 0000000000..8fcb98f1cf --- /dev/null +++ b/contrib/daitch_mokotoff/daitch_mokotoff.h @@ -0,0 +1,1110 @@ +/* + * Types and lookup tables for Daitch-Mokotoff Soundex + * + * Copyright (c) 2021 Finance Norway + * Author: Dag Lem <dag@nimrod.no> + * + * This file is generated by daitch_mokotoff_header.pl + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose, without fee, and without a written agreement + * is hereby granted, provided that the above copyright notice and this + * paragraph and the following two paragraphs appear in all copies. + * + * IN NO EVENT SHALL THE AUTHOR OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING + * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS + * DOCUMENTATION, EVEN IF THE AUTHOR OR DISTRIBUTORS HAVE BEEN ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * THE AUTHOR AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE AUTHOR AND DISTRIBUTORS HAS NO OBLIGATIONS TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include <stdlib.h> + +#define DM_MAX_CODE_DIGITS 6 +#define DM_MAX_ALTERNATE_CODES 5 +#define DM_MAX_NODES 1564 +#define DM_MAX_LEAVES 1250 +#define DM_MAX_SOUNDEX_CHARS (DM_MAX_NODES*(DM_MAX_CODE_DIGITS + 1)) +#define DM_VOWELS "AEIOUY" + +typedef char dm_code[2 + 1]; /* One or two sequential code digits + NUL */ +typedef dm_code dm_codes[2]; /* One or two alternate code sequences */ + +struct dm_letter +{ + char letter; + struct dm_letter *letters; + dm_codes *codes; +}; + +struct dm_node +{ + int soundex_length; + char soundex[DM_MAX_CODE_DIGITS + 1]; + int is_leaf; + int last_update; + char code_digit; + + /* + * One or two alternate code digits leading to this node - repeated code + * digits and 'X' lead back to the same node. + */ + char prev_code_digits[2]; + char next_code_digits[2]; + struct dm_node *next_nodes[DM_MAX_ALTERNATE_CODES + 1]; +}; + +typedef struct dm_letter dm_letter; +typedef struct dm_node dm_node; + +static dm_codes codes_0_1_X[] = +{ + { + "0" + }, + { + "1" + }, + { + "X" + } +}; +static dm_codes codes_0_7_X[] = +{ + { + "0" + }, + { + "7" + }, + { + "X" + } +}; +static dm_codes codes_0_X_X[] = +{ + { + "0" + }, + { + "X" + }, + { + "X" + } +}; +static dm_codes codes_1_1_X[] = +{ + { + "1" + }, + { + "1" + }, + { + "X" + } +}; +static dm_codes codes_1_X_X[] = +{ + { + "1" + }, + { + "X" + }, + { + "X" + } +}; +static dm_codes codes_1or4_Xor4_Xor4[] = +{ + { + "1", "4" + }, + { + "X", "4" + }, + { + "X", "4" + } +}; +static dm_codes codes_2_43_43[] = +{ + { + "2" + }, + { + "43" + }, + { + "43" + } +}; +static dm_codes codes_2_4_4[] = +{ + { + "2" + }, + { + "4" + }, + { + "4" + } +}; +static dm_codes codes_3_3_3[] = +{ + { + "3" + }, + { + "3" + }, + { + "3" + } +}; +static dm_codes codes_3or4_3or4_3or4[] = +{ + { + "3", "4" + }, + { + "3", "4" + }, + { + "3", "4" + } +}; +static dm_codes codes_4_4_4[] = +{ + { + "4" + }, + { + "4" + }, + { + "4" + } +}; +static dm_codes codes_5_54_54[] = +{ + { + "5" + }, + { + "54" + }, + { + "54" + } +}; +static dm_codes codes_5_5_5[] = +{ + { + "5" + }, + { + "5" + }, + { + "5" + } +}; +static dm_codes codes_5_5_X[] = +{ + { + "5" + }, + { + "5" + }, + { + "X" + } +}; +static dm_codes codes_5or45_5or45_5or45[] = +{ + { + "5", "45" + }, + { + "5", "45" + }, + { + "5", "45" + } +}; +static dm_codes codes_5or4_5or4_5or4[] = +{ + { + "5", "4" + }, + { + "5", "4" + }, + { + "5", "4" + } +}; +static dm_codes codes_66_66_66[] = +{ + { + "66" + }, + { + "66" + }, + { + "66" + } +}; +static dm_codes codes_6_6_6[] = +{ + { + "6" + }, + { + "6" + }, + { + "6" + } +}; +static dm_codes codes_7_7_7[] = +{ + { + "7" + }, + { + "7" + }, + { + "7" + } +}; +static dm_codes codes_8_8_8[] = +{ + { + "8" + }, + { + "8" + }, + { + "8" + } +}; +static dm_codes codes_94or4_94or4_94or4[] = +{ + { + "94", "4" + }, + { + "94", "4" + }, + { + "94", "4" + } +}; +static dm_codes codes_9_9_9[] = +{ + { + "9" + }, + { + "9" + }, + { + "9" + } +}; +static dm_codes codes_X_X_6orX[] = +{ + { + "X" + }, + { + "X" + }, + { + "6", "X" + } +}; + +static dm_letter letter_A[] = +{ + { + 'I', NULL, codes_0_1_X + }, + { + 'J', NULL, codes_0_1_X + }, + { + 'U', NULL, codes_0_7_X + }, + { + 'Y', NULL, codes_0_1_X + }, + { + '\0' + } +}; +static dm_letter letter_CH[] = +{ + { + 'S', NULL, codes_5_54_54 + }, + { + '\0' + } +}; +static dm_letter letter_CS[] = +{ + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_CZ[] = +{ + { + 'S', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_C[] = +{ + { + 'H', letter_CH, codes_5or4_5or4_5or4 + }, + { + 'K', NULL, codes_5or45_5or45_5or45 + }, + { + 'S', letter_CS, codes_4_4_4 + }, + { + 'Z', letter_CZ, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_DR[] = +{ + { + 'S', NULL, codes_4_4_4 + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_DS[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_DZ[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + 'S', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_D[] = +{ + { + 'R', letter_DR, NULL + }, + { + 'S', letter_DS, codes_4_4_4 + }, + { + 'T', NULL, codes_3_3_3 + }, + { + 'Z', letter_DZ, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_E[] = +{ + { + 'I', NULL, codes_0_1_X + }, + { + 'J', NULL, codes_0_1_X + }, + { + 'U', NULL, codes_1_1_X + }, + { + 'Y', NULL, codes_0_1_X + }, + { + '\0' + } +}; +static dm_letter letter_F[] = +{ + { + 'B', NULL, codes_7_7_7 + }, + { + '\0' + } +}; +static dm_letter letter_I[] = +{ + { + 'A', NULL, codes_1_X_X + }, + { + 'E', NULL, codes_1_X_X + }, + { + 'O', NULL, codes_1_X_X + }, + { + 'U', NULL, codes_1_X_X + }, + { + '\0' + } +}; +static dm_letter letter_K[] = +{ + { + 'H', NULL, codes_5_5_5 + }, + { + 'S', NULL, codes_5_54_54 + }, + { + '\0' + } +}; +static dm_letter letter_M[] = +{ + { + 'N', NULL, codes_66_66_66 + }, + { + '\0' + } +}; +static dm_letter letter_N[] = +{ + { + 'M', NULL, codes_66_66_66 + }, + { + '\0' + } +}; +static dm_letter letter_O[] = +{ + { + 'I', NULL, codes_0_1_X + }, + { + 'J', NULL, codes_0_1_X + }, + { + 'Y', NULL, codes_0_1_X + }, + { + '\0' + } +}; +static dm_letter letter_P[] = +{ + { + 'F', NULL, codes_7_7_7 + }, + { + 'H', NULL, codes_7_7_7 + }, + { + '\0' + } +}; +static dm_letter letter_R[] = +{ + { + 'S', NULL, codes_94or4_94or4_94or4 + }, + { + 'Z', NULL, codes_94or4_94or4_94or4 + }, + { + '\0' + } +}; +static dm_letter letter_SCHTC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SCHTSC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SCHTS[] = +{ + { + 'C', letter_SCHTSC, NULL + }, + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SCHT[] = +{ + { + 'C', letter_SCHTC, NULL + }, + { + 'S', letter_SCHTS, NULL + }, + { + '\0' + } +}; +static dm_letter letter_SCH[] = +{ + { + 'D', NULL, codes_2_43_43 + }, + { + 'T', letter_SCHT, codes_2_43_43 + }, + { + '\0' + } +}; +static dm_letter letter_SC[] = +{ + { + 'H', letter_SCH, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SHC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SHTC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SHTS[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SHT[] = +{ + { + 'C', letter_SHTC, NULL + }, + { + 'S', letter_SHTS, NULL + }, + { + '\0' + } +}; +static dm_letter letter_SH[] = +{ + { + 'C', letter_SHC, NULL + }, + { + 'D', NULL, codes_2_43_43 + }, + { + 'T', letter_SHT, codes_2_43_43 + }, + { + '\0' + } +}; +static dm_letter letter_STC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_STR[] = +{ + { + 'S', NULL, codes_2_4_4 + }, + { + 'Z', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_STSC[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_STS[] = +{ + { + 'C', letter_STSC, NULL + }, + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_ST[] = +{ + { + 'C', letter_STC, NULL + }, + { + 'R', letter_STR, NULL + }, + { + 'S', letter_STS, NULL + }, + { + '\0' + } +}; +static dm_letter letter_SZC[] = +{ + { + 'S', NULL, codes_2_4_4 + }, + { + 'Z', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_SZ[] = +{ + { + 'C', letter_SZC, NULL + }, + { + 'D', NULL, codes_2_43_43 + }, + { + 'T', NULL, codes_2_43_43 + }, + { + '\0' + } +}; +static dm_letter letter_S[] = +{ + { + 'C', letter_SC, codes_2_4_4 + }, + { + 'D', NULL, codes_2_43_43 + }, + { + 'H', letter_SH, codes_4_4_4 + }, + { + 'T', letter_ST, codes_2_43_43 + }, + { + 'Z', letter_SZ, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TC[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TR[] = +{ + { + 'S', NULL, codes_4_4_4 + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TSC[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TS[] = +{ + { + 'C', letter_TSC, NULL + }, + { + 'H', NULL, codes_4_4_4 + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TTC[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TTSC[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TTS[] = +{ + { + 'C', letter_TTSC, NULL + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TT[] = +{ + { + 'C', letter_TTC, NULL + }, + { + 'S', letter_TTS, codes_4_4_4 + }, + { + 'Z', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_TZ[] = +{ + { + 'S', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_T[] = +{ + { + 'C', letter_TC, codes_4_4_4 + }, + { + 'H', NULL, codes_3_3_3 + }, + { + 'R', letter_TR, NULL + }, + { + 'S', letter_TS, codes_4_4_4 + }, + { + 'T', letter_TT, NULL + }, + { + 'Z', letter_TZ, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_U[] = +{ + { + 'E', NULL, codes_0_X_X + }, + { + 'I', NULL, codes_0_1_X + }, + { + 'J', NULL, codes_0_1_X + }, + { + 'Y', NULL, codes_0_1_X + }, + { + '\0' + } +}; +static dm_letter letter_ZDZ[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_ZD[] = +{ + { + 'Z', letter_ZDZ, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_ZHDZ[] = +{ + { + 'H', NULL, codes_2_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_ZHD[] = +{ + { + 'Z', letter_ZHDZ, NULL + }, + { + '\0' + } +}; +static dm_letter letter_ZH[] = +{ + { + 'D', letter_ZHD, codes_2_43_43 + }, + { + '\0' + } +}; +static dm_letter letter_ZSC[] = +{ + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_ZS[] = +{ + { + 'C', letter_ZSC, NULL + }, + { + 'H', NULL, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_Z[] = +{ + { + 'D', letter_ZD, codes_2_43_43 + }, + { + 'H', letter_ZH, codes_4_4_4 + }, + { + 'S', letter_ZS, codes_4_4_4 + }, + { + '\0' + } +}; +static dm_letter letter_[] = +{ + { + 'A', letter_A, codes_0_X_X + }, + { + 'B', NULL, codes_7_7_7 + }, + { + 'C', letter_C, codes_5or4_5or4_5or4 + }, + { + 'D', letter_D, codes_3_3_3 + }, + { + 'E', letter_E, codes_0_X_X + }, + { + 'F', letter_F, codes_7_7_7 + }, + { + 'G', NULL, codes_5_5_5 + }, + { + 'H', NULL, codes_5_5_X + }, + { + 'I', letter_I, codes_0_X_X + }, + { + 'J', NULL, codes_1or4_Xor4_Xor4 + }, + { + 'K', letter_K, codes_5_5_5 + }, + { + 'L', NULL, codes_8_8_8 + }, + { + 'M', letter_M, codes_6_6_6 + }, + { + 'N', letter_N, codes_6_6_6 + }, + { + 'O', letter_O, codes_0_X_X + }, + { + 'P', letter_P, codes_7_7_7 + }, + { + 'Q', NULL, codes_5_5_5 + }, + { + 'R', letter_R, codes_9_9_9 + }, + { + 'S', letter_S, codes_4_4_4 + }, + { + 'T', letter_T, codes_3_3_3 + }, + { + 'U', letter_U, codes_0_X_X + }, + { + 'V', NULL, codes_7_7_7 + }, + { + 'W', NULL, codes_7_7_7 + }, + { + 'X', NULL, codes_5_54_54 + }, + { + 'Y', NULL, codes_1_X_X + }, + { + 'Z', letter_Z, codes_4_4_4 + }, + { + 'a', NULL, codes_X_X_6orX + }, + { + 'e', NULL, codes_X_X_6orX + }, + { + 't', NULL, codes_3or4_3or4_3or4 + }, + { + '\0' + } +}; diff --git a/contrib/daitch_mokotoff/daitch_mokotoff_header.pl b/contrib/daitch_mokotoff/daitch_mokotoff_header.pl new file mode 100755 index 0000000000..26e67fe5df --- /dev/null +++ b/contrib/daitch_mokotoff/daitch_mokotoff_header.pl @@ -0,0 +1,274 @@ +#!/bin/perl +# +# Generation of types and lookup tables for Daitch-Mokotoff soundex. +# +# Copyright (c) 2021 Finance Norway +# Author: Dag Lem <dag@nimrod.no> +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose, without fee, and without a written agreement +# is hereby granted, provided that the above copyright notice and this +# paragraph and the following two paragraphs appear in all copies. +# +# IN NO EVENT SHALL THE AUTHOR OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR +# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING +# LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS +# DOCUMENTATION, EVEN IF THE AUTHOR OR DISTRIBUTORS HAVE BEEN ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# THE AUTHOR AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, +# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY +# AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS +# ON AN "AS IS" BASIS, AND THE AUTHOR AND DISTRIBUTORS HAS NO OBLIGATIONS TO +# PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. +# + +use strict; +use warnings; +use utf8; +use open IO => ':utf8', ':std'; +use Data::Dumper; + +# Parse code table and generate tree for letter transitions. +my %codes; +my %alternates; +my $table = [{}, [["","",""]]]; +while (<DATA>) { + chomp; + my ($letters, $codes) = split(/\s+/); + my @codes = map { [ split(/\|/) ] } split(/,/, $codes); + + # Find alternate code transitions for calculation of storage. + # The first character can never yield more than two alternate codes, and is not considered here. + for my $c (@codes[1..2]) { + if (@$c > 1) { + for my $i (0..1) { + my ($a, $b) = (substr($c->[$i], -1, 1), substr($c->[($i + 1)%2], 0, 1)); + $alternates{$a}{$b} = 1 if $a ne $b; + } + } + } + my $key = "codes_" . join("_", map { join("or", @$_) } @codes); + my $val = join(",\n", map { "\t{\n\t\t" . join(", ", map { "\"$_\"" } @$_) . "\n\t}" } @codes); + $codes{$key} = $val; + + for my $letter (split(/,/, $letters)) { + my $ref = $table->[0]; + # Link each character to the next in the letter combination. + my @c = split(//, $letter); + my $last_c = pop(@c); + for my $c (@c) { + $ref->{$c} //= [ {}, undef ]; + $ref->{$c}[0] //= {}; + $ref = $ref->{$c}[0]; + } + # The sound code for the letter combination is stored at the last character. + $ref->{$last_c}[1] = $key; + } +} +close(DATA); + +# Find the maximum number of alternate codes in one position. +my $alt_x = $alternates{"X"}; +while (my ($k, $v) = each %alternates) { + if (defined delete $v->{"X"}) { + for my $x (keys %$alt_x) { + $v->{$x} = 1; + } + } +} +my $max_alt = (reverse sort (2, map { scalar keys %$_ } values %alternates))[0]; + +# The maximum number of nodes and leaves in the soundex tree. +# These are safe estimates, but in practice somewhat higher than the actual maximums. +# Note that the first character can never yield more than two alternate codes, +# hence the calculations are performed as sums of two subtrees. +my $digits = 6; +# Number of nodes (sum of geometric progression). +my $max_nodes = 2 + 2*(1 - $max_alt**($digits - 1))/(1 - $max_alt); +# Number of leaves (exponential of base number). +my $max_leaves = 2*$max_alt**($digits - 2); + +print <<EOF; +/* + * Types and lookup tables for Daitch-Mokotoff Soundex + * + * Copyright (c) 2021 Finance Norway + * Author: Dag Lem <dag\@nimrod.no> + * + * This file is generated by daitch_mokotoff_header.pl + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose, without fee, and without a written agreement + * is hereby granted, provided that the above copyright notice and this + * paragraph and the following two paragraphs appear in all copies. + * + * IN NO EVENT SHALL THE AUTHOR OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING + * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS + * DOCUMENTATION, EVEN IF THE AUTHOR OR DISTRIBUTORS HAVE BEEN ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * THE AUTHOR AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE AUTHOR AND DISTRIBUTORS HAS NO OBLIGATIONS TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include <stdlib.h> + +#define DM_MAX_CODE_DIGITS $digits +#define DM_MAX_ALTERNATE_CODES $max_alt +#define DM_MAX_NODES $max_nodes +#define DM_MAX_LEAVES $max_leaves +#define DM_MAX_SOUNDEX_CHARS (DM_MAX_NODES*(DM_MAX_CODE_DIGITS + 1)) +#define DM_VOWELS "AEIOUY" + +typedef char dm_code[2 + 1]; /* One or two sequential code digits + NUL */ +typedef dm_code dm_codes[2]; /* One or two alternate code sequences */ + +struct dm_letter +{ + char letter; + struct dm_letter *letters; + dm_codes *codes; +}; + +struct dm_node +{ + int soundex_length; + char soundex[DM_MAX_CODE_DIGITS + 1]; + int is_leaf; + int last_update; + char code_digit; + + /* + * One or two alternate code digits leading to this node - repeated code + * digits and 'X' lead back to the same node. + */ + char prev_code_digits[2]; + char next_code_digits[2]; + struct dm_node *next_nodes[DM_MAX_ALTERNATE_CODES + 1]; +}; + +typedef struct dm_letter dm_letter; +typedef struct dm_node dm_node; + +EOF + +for my $key (sort keys %codes) { + print "static dm_codes $key\[\] =\n{\n" . $codes{$key} . "\n};\n"; +} + +print "\n"; + +sub hash2code { + my ($ref, $letter) = @_; + + my @letters = (); + + my $h = $ref->[0]; + for my $key (sort keys %$h) { + $ref = $h->{$key}; + my $children = "NULL"; + if (defined $ref->[0]) { + $children = "letter_$letter$key"; + hash2code($ref, "$letter$key"); + } + my $codes = $ref->[1] // "NULL"; + push(@letters, "\t{\n\t\t'$key', $children, $codes\n\t}"); + } + + print "static dm_letter letter_$letter\[\] =\n{\n"; + for (@letters) { + print "$_,\n"; + } + print "\t{\n\t\t'\\0'\n\t}\n"; + print "};\n"; +} + +hash2code($table, ''); + + +# Table adapted from https://www.jewishgen.org/InfoFiles/Soundex.html +# +# X = NC (not coded) +# +# Note that the following letters are coded with substitute letters +# +# Ą => a (use '[' for table lookup) +# Ę => e (use '\\' for table lookup) +# Ţ => t (use ']' for table lookup) +# + +__DATA__ +AI,AJ,AY 0,1,X +AU 0,7,X +a X,X,6|X +A 0,X,X +B 7,7,7 +CHS 5,54,54 +CH 5|4,5|4,5|4 +CK 5|45,5|45,5|45 +CZ,CS,CSZ,CZS 4,4,4 +C 5|4,5|4,5|4 +DRZ,DRS 4,4,4 +DS,DSH,DSZ 4,4,4 +DZ,DZH,DZS 4,4,4 +D,DT 3,3,3 +EI,EJ,EY 0,1,X +EU 1,1,X +e X,X,6|X +E 0,X,X +FB 7,7,7 +F 7,7,7 +G 5,5,5 +H 5,5,X +IA,IE,IO,IU 1,X,X +I 0,X,X +J 1|4,X|4,X|4 +KS 5,54,54 +KH 5,5,5 +K 5,5,5 +L 8,8,8 +MN 66,66,66 +M 6,6,6 +NM 66,66,66 +N 6,6,6 +OI,OJ,OY 0,1,X +O 0,X,X +P,PF,PH 7,7,7 +Q 5,5,5 +RZ,RS 94|4,94|4,94|4 +R 9,9,9 +SCHTSCH,SCHTSH,SCHTCH 2,4,4 +SCH 4,4,4 +SHTCH,SHCH,SHTSH 2,4,4 +SHT,SCHT,SCHD 2,43,43 +SH 4,4,4 +STCH,STSCH,SC 2,4,4 +STRZ,STRS,STSH 2,4,4 +ST 2,43,43 +SZCZ,SZCS 2,4,4 +SZT,SHD,SZD,SD 2,43,43 +SZ 4,4,4 +S 4,4,4 +TCH,TTCH,TTSCH 4,4,4 +TH 3,3,3 +TRZ,TRS 4,4,4 +TSCH,TSH 4,4,4 +TS,TTS,TTSZ,TC 4,4,4 +TZ,TTZ,TZS,TSZ 4,4,4 +t 3|4,3|4,3|4 +T 3,3,3 +UI,UJ,UY 0,1,X +U,UE 0,X,X +V 7,7,7 +W 7,7,7 +X 5,54,54 +Y 1,X,X +ZDZ,ZDZH,ZHDZH 2,4,4 +ZD,ZHD 2,43,43 +ZH,ZS,ZSCH,ZSH 4,4,4 +Z 4,4,4 diff --git a/contrib/daitch_mokotoff/expected/daitch_mokotoff.out b/contrib/daitch_mokotoff/expected/daitch_mokotoff.out new file mode 100644 index 0000000000..b7db809746 --- /dev/null +++ b/contrib/daitch_mokotoff/expected/daitch_mokotoff.out @@ -0,0 +1,451 @@ +CREATE EXTENSION daitch_mokotoff; +SELECT daitch_mokotoff('GOLDEN'); + daitch_mokotoff +----------------- + 583600 +(1 row) + +SELECT daitch_mokotoff('Alpert'); + daitch_mokotoff +----------------- + 087930 +(1 row) + +SELECT daitch_mokotoff('Breuer'); + daitch_mokotoff +----------------- + 791900 +(1 row) + +SELECT daitch_mokotoff('Freud'); + daitch_mokotoff +----------------- + 793000 +(1 row) + +SELECT daitch_mokotoff('Haber'); + daitch_mokotoff +----------------- + 579000 +(1 row) + +SELECT daitch_mokotoff('Manheim'); + daitch_mokotoff +----------------- + 665600 +(1 row) + +SELECT daitch_mokotoff('Mintz'); + daitch_mokotoff +----------------- + 664000 +(1 row) + +SELECT daitch_mokotoff('Topf'); + daitch_mokotoff +----------------- + 370000 +(1 row) + +SELECT daitch_mokotoff('Kleinman'); + daitch_mokotoff +----------------- + 586660 +(1 row) + +SELECT daitch_mokotoff('Ben Aron'); + daitch_mokotoff +----------------- + 769600 +(1 row) + +SELECT daitch_mokotoff('AUERBACH'); + daitch_mokotoff +----------------- + 097500 097400 +(1 row) + +SELECT daitch_mokotoff('OHRBACH'); + daitch_mokotoff +----------------- + 097500 097400 +(1 row) + +SELECT daitch_mokotoff('LIPSHITZ'); + daitch_mokotoff +----------------- + 874400 +(1 row) + +SELECT daitch_mokotoff('LIPPSZYC'); + daitch_mokotoff +----------------- + 874500 874400 +(1 row) + +SELECT daitch_mokotoff('LEWINSKY'); + daitch_mokotoff +----------------- + 876450 +(1 row) + +SELECT daitch_mokotoff('LEVINSKI'); + daitch_mokotoff +----------------- + 876450 +(1 row) + +SELECT daitch_mokotoff('SZLAMAWICZ'); + daitch_mokotoff +----------------- + 486740 +(1 row) + +SELECT daitch_mokotoff('SHLAMOVITZ'); + daitch_mokotoff +----------------- + 486740 +(1 row) + +SELECT daitch_mokotoff('Ceniow'); + daitch_mokotoff +----------------- + 567000 467000 +(1 row) + +SELECT daitch_mokotoff('Tsenyuv'); + daitch_mokotoff +----------------- + 467000 +(1 row) + +SELECT daitch_mokotoff('Holubica'); + daitch_mokotoff +----------------- + 587500 587400 +(1 row) + +SELECT daitch_mokotoff('Golubitsa'); + daitch_mokotoff +----------------- + 587400 +(1 row) + +SELECT daitch_mokotoff('Przemysl'); + daitch_mokotoff +----------------- + 794648 746480 +(1 row) + +SELECT daitch_mokotoff('Pshemeshil'); + daitch_mokotoff +----------------- + 746480 +(1 row) + +SELECT daitch_mokotoff('Rosochowaciec'); + daitch_mokotoff +--------------------------------------------------------- + 945755 945754 945745 945744 944755 944754 944745 944744 +(1 row) + +SELECT daitch_mokotoff('Rosokhovatsets'); + daitch_mokotoff +----------------- + 945744 +(1 row) + +SELECT daitch_mokotoff('Peters'); + daitch_mokotoff +----------------- + 739400 734000 +(1 row) + +SELECT daitch_mokotoff('Peterson'); + daitch_mokotoff +----------------- + 739460 734600 +(1 row) + +SELECT daitch_mokotoff('Moskowitz'); + daitch_mokotoff +----------------- + 645740 +(1 row) + +SELECT daitch_mokotoff('Moskovitz'); + daitch_mokotoff +----------------- + 645740 +(1 row) + +SELECT daitch_mokotoff('Auerbach'); + daitch_mokotoff +----------------- + 097500 097400 +(1 row) + +SELECT daitch_mokotoff('Uhrbach'); + daitch_mokotoff +----------------- + 097500 097400 +(1 row) + +SELECT daitch_mokotoff('Jackson'); + daitch_mokotoff +----------------------------- + 154600 145460 454600 445460 +(1 row) + +SELECT daitch_mokotoff('Jackson-Jackson'); + daitch_mokotoff +----------------------------------------------------------------------- + 154654 154645 154644 145465 145464 454654 454645 454644 445465 445464 +(1 row) + +SELECT daitch_mokotoff('Müller'); + daitch_mokotoff +----------------- + 689000 +(1 row) + +SELECT daitch_mokotoff('schmidt'); + daitch_mokotoff +----------------- + 463000 +(1 row) + +SELECT daitch_mokotoff('schneider'); + daitch_mokotoff +----------------- + 463900 +(1 row) + +SELECT daitch_mokotoff('fischer'); + daitch_mokotoff +----------------- + 749000 +(1 row) + +SELECT daitch_mokotoff('weber'); + daitch_mokotoff +----------------- + 779000 +(1 row) + +SELECT daitch_mokotoff('meyer'); + daitch_mokotoff +----------------- + 619000 +(1 row) + +SELECT daitch_mokotoff('wagner'); + daitch_mokotoff +----------------- + 756900 +(1 row) + +SELECT daitch_mokotoff('schulz'); + daitch_mokotoff +----------------- + 484000 +(1 row) + +SELECT daitch_mokotoff('becker'); + daitch_mokotoff +----------------- + 759000 745900 +(1 row) + +SELECT daitch_mokotoff('hoffmann'); + daitch_mokotoff +----------------- + 576600 +(1 row) + +SELECT daitch_mokotoff('schäfer'); + daitch_mokotoff +----------------- + 479000 +(1 row) + +SELECT daitch_mokotoff('Straßburg'); + daitch_mokotoff +----------------- + 294795 +(1 row) + +SELECT daitch_mokotoff('Strasburg'); + daitch_mokotoff +----------------- + 294795 +(1 row) + +SELECT daitch_mokotoff('Éregon'); + daitch_mokotoff +----------------- + 095600 +(1 row) + +SELECT daitch_mokotoff('Eregon'); + daitch_mokotoff +----------------- + 095600 +(1 row) + +SELECT daitch_mokotoff('AKSSOL'); + daitch_mokotoff +----------------- + 054800 +(1 row) + +SELECT daitch_mokotoff('GERSCHFELD'); + daitch_mokotoff +----------------------------- + 594578 594783 545783 547830 +(1 row) + +SELECT daitch_mokotoff('OBrien'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('''OBrien'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('O''Brien'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('OB''rien'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('OBr''ien'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('OBri''en'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('OBrie''n'); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('OBrien'''); + daitch_mokotoff +----------------- + 079600 +(1 row) + +SELECT daitch_mokotoff('KINGSMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('-KINGSMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('K-INGSMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KI-NGSMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KIN-GSMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KING-SMITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KINGS-MITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KINGSM-ITH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KINGSMI-TH'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KINGSMIT-H'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff('KINGSMITH-'); + daitch_mokotoff +----------------- + 565463 +(1 row) + +SELECT daitch_mokotoff(E' \t\n\r Washington \t\n\r '); + daitch_mokotoff +----------------- + 746536 +(1 row) + +SELECT daitch_mokotoff('Washington'); + daitch_mokotoff +----------------- + 746536 +(1 row) + +SELECT daitch_mokotoff('ţamas'); + daitch_mokotoff +----------------- + 364000 464000 +(1 row) + +SELECT daitch_mokotoff('țamas'); + daitch_mokotoff +----------------- + 364000 464000 +(1 row) + +SELECT daitch_mokotoff('CJC'); + daitch_mokotoff +------------------------------------------- + 550000 540000 545000 450000 400000 440000 +(1 row) + diff --git a/contrib/daitch_mokotoff/sql/daitch_mokotoff.sql b/contrib/daitch_mokotoff/sql/daitch_mokotoff.sql new file mode 100644 index 0000000000..eafc24ee87 --- /dev/null +++ b/contrib/daitch_mokotoff/sql/daitch_mokotoff.sql @@ -0,0 +1,121 @@ +CREATE EXTENSION daitch_mokotoff; + + +-- https://www.jewishgen.org/InfoFiles/Soundex.html +SELECT daitch_mokotoff('GOLDEN'); +SELECT daitch_mokotoff('Alpert'); +SELECT daitch_mokotoff('Breuer'); +SELECT daitch_mokotoff('Freud'); +SELECT daitch_mokotoff('Haber'); +SELECT daitch_mokotoff('Manheim'); +SELECT daitch_mokotoff('Mintz'); +SELECT daitch_mokotoff('Topf'); +SELECT daitch_mokotoff('Kleinman'); +SELECT daitch_mokotoff('Ben Aron'); + +SELECT daitch_mokotoff('AUERBACH'); +SELECT daitch_mokotoff('OHRBACH'); +SELECT daitch_mokotoff('LIPSHITZ'); +SELECT daitch_mokotoff('LIPPSZYC'); +SELECT daitch_mokotoff('LEWINSKY'); +SELECT daitch_mokotoff('LEVINSKI'); +SELECT daitch_mokotoff('SZLAMAWICZ'); +SELECT daitch_mokotoff('SHLAMOVITZ'); + + +-- https://www.avotaynu.com/soundex.htm +SELECT daitch_mokotoff('Ceniow'); +SELECT daitch_mokotoff('Tsenyuv'); +SELECT daitch_mokotoff('Holubica'); +SELECT daitch_mokotoff('Golubitsa'); +SELECT daitch_mokotoff('Przemysl'); +SELECT daitch_mokotoff('Pshemeshil'); +SELECT daitch_mokotoff('Rosochowaciec'); +SELECT daitch_mokotoff('Rosokhovatsets'); + + +-- https://familypedia.fandom.com/wiki/Daitch-Mokotoff_Soundex +SELECT daitch_mokotoff('Peters'); +SELECT daitch_mokotoff('Peterson'); +SELECT daitch_mokotoff('Moskowitz'); +SELECT daitch_mokotoff('Moskovitz'); +SELECT daitch_mokotoff('Auerbach'); +SELECT daitch_mokotoff('Uhrbach'); +SELECT daitch_mokotoff('Jackson'); +SELECT daitch_mokotoff('Jackson-Jackson'); + + +-- Perl Text::Phonetic::DaitchMokotoff 006_daitchmokotoff.t +-- Tests covered above are omitted. +SELECT daitch_mokotoff('Müller'); +SELECT daitch_mokotoff('schmidt'); +SELECT daitch_mokotoff('schneider'); +SELECT daitch_mokotoff('fischer'); +SELECT daitch_mokotoff('weber'); +SELECT daitch_mokotoff('meyer'); +SELECT daitch_mokotoff('wagner'); +SELECT daitch_mokotoff('schulz'); +SELECT daitch_mokotoff('becker'); +SELECT daitch_mokotoff('hoffmann'); +SELECT daitch_mokotoff('schäfer'); + + +-- Apache Commons DaitchMokotoffSoundexTest.java + +-- testAccentedCharacterFolding +SELECT daitch_mokotoff('Straßburg'); +SELECT daitch_mokotoff('Strasburg'); + +SELECT daitch_mokotoff('Éregon'); +SELECT daitch_mokotoff('Eregon'); + +-- testAdjacentCodes +SELECT daitch_mokotoff('AKSSOL'); +SELECT daitch_mokotoff('GERSCHFELD'); + +-- testEncodeBasic +-- Tests covered above are omitted. + +-- testEncodeIgnoreApostrophes +SELECT daitch_mokotoff('OBrien'); +SELECT daitch_mokotoff('''OBrien'); +SELECT daitch_mokotoff('O''Brien'); +SELECT daitch_mokotoff('OB''rien'); +SELECT daitch_mokotoff('OBr''ien'); +SELECT daitch_mokotoff('OBri''en'); +SELECT daitch_mokotoff('OBrie''n'); +SELECT daitch_mokotoff('OBrien'''); + +-- testEncodeIgnoreHyphens +SELECT daitch_mokotoff('KINGSMITH'); +SELECT daitch_mokotoff('-KINGSMITH'); +SELECT daitch_mokotoff('K-INGSMITH'); +SELECT daitch_mokotoff('KI-NGSMITH'); +SELECT daitch_mokotoff('KIN-GSMITH'); +SELECT daitch_mokotoff('KING-SMITH'); +SELECT daitch_mokotoff('KINGS-MITH'); +SELECT daitch_mokotoff('KINGSM-ITH'); +SELECT daitch_mokotoff('KINGSMI-TH'); +SELECT daitch_mokotoff('KINGSMIT-H'); +SELECT daitch_mokotoff('KINGSMITH-'); + +-- testEncodeIgnoreTrimmable +SELECT daitch_mokotoff(E' \t\n\r Washington \t\n\r '); +SELECT daitch_mokotoff('Washington'); + +-- testSoundexBasic +-- Tests covered above are omitted. + +-- testSoundexBasic2 +-- Tests covered above are omitted. + +-- testSoundexBasic3 +-- Tests covered above are omitted. + +-- testSpecialRomanianCharacters +SELECT daitch_mokotoff('ţamas'); -- t-cedila +SELECT daitch_mokotoff('țamas'); -- t-comma + + +-- Contrived case which is not handled correctly by other implementations. +SELECT daitch_mokotoff('CJC'); diff --git a/doc/src/sgml/contrib.sgml b/doc/src/sgml/contrib.sgml index d3ca4b6932..0788db060d 100644 --- a/doc/src/sgml/contrib.sgml +++ b/doc/src/sgml/contrib.sgml @@ -105,6 +105,7 @@ CREATE EXTENSION <replaceable>module_name</replaceable>; &citext; &cube; &dblink; + &daitch-mokotoff; &dict-int; &dict-xsyn; &earthdistance; diff --git a/doc/src/sgml/daitch-mokotoff.sgml b/doc/src/sgml/daitch-mokotoff.sgml new file mode 100644 index 0000000000..6dbc817eca --- /dev/null +++ b/doc/src/sgml/daitch-mokotoff.sgml @@ -0,0 +1,92 @@ +<!-- doc/src/sgml/daitch-mokotoff.sgml --> + +<sect1 id="daitch-mokotoff" xreflabel="daitch_mokotoff"> + <title>daitch_mokotoff</title> + + <indexterm zone="daitch-mokotoff"> + <primary>daitch_mokotoff</primary> + </indexterm> + + <para> + The <filename>daitch_mokotoff</filename> module provides an implementation + of the Daitch-Mokotoff Soundex System. + </para> + + <para> + Compared to the American Soundex System implemented in + the <filename>fuzzystrmatch</filename> module, the major improvements of the + Daitch-Mokotoff Soundex System are: + + <itemizedlist spacing="compact" mark="bullet"> + <listitem> + <para> + Information is coded to the first six meaningful letters rather than + four. + </para> + </listitem> + <listitem> + <para> + The initial letter is coded rather than kept as is. + </para> + </listitem> + <listitem> + <para> + Where two consecutive letters have a single sound, they are coded as a + single number. + </para> + </listitem> + <listitem> + <para> + When a letter or combination of letters may have two different sounds, + it is double coded under the two different codes. + </para> + </listitem> + <listitem> + <para> + A letter or combination of letters maps into ten possible codes rather + than seven. + </para> + </listitem> + </itemizedlist> + + The <function>daitch_mokotoff</function> function shown in + <xref linkend="functions-daitch-mokotoff-table"/> generates Daitch-Mokotoff + soundex codes for matching of similar-sounding names. + </para> + + <table id="functions-daitch-mokotoff-table"> + <title><filename>daitch_mokotoff</filename> Functions</title> + <tgroup cols="1"> + <thead> + <row> + <entry role="func_table_entry"><para role="func_signature"> + Function + </para> + <para> + Description + </para></entry> + </row> + </thead> + + <tbody> + <row> + <entry role="func_table_entry"><para role="func_signature"> + <function>daitch_mokotoff</function> ( <parameter>name</parameter> <type>text</type> ) + <returnvalue>text</returnvalue> + </para> + <para> + Generates Daitch-Mokotoff soundex codes. + </para></entry> + </row> + </tbody> + </tgroup> + </table> + + <indexterm> + <primary>daitch_mokotoff</primary> + </indexterm> + <para> + <function>daitch_mokotoff</function> generates Daitch-Mokotoff soundex codes for the specified <parameter>name</parameter>.Since alternate soundex codes are separated by spaces, the returned text is suited for use inFull Text Search, see <xref linkend="textsearch"/>. + </para> + +</sect1> diff --git a/doc/src/sgml/filelist.sgml b/doc/src/sgml/filelist.sgml index 89454e99b9..9ac43e5928 100644 --- a/doc/src/sgml/filelist.sgml +++ b/doc/src/sgml/filelist.sgml @@ -117,6 +117,7 @@ <!ENTITY btree-gist SYSTEM "btree-gist.sgml"> <!ENTITY citext SYSTEM "citext.sgml"> <!ENTITY cube SYSTEM "cube.sgml"> +<!ENTITY daitch-mokotoff SYSTEM "daitch-mokotoff.sgml"> <!ENTITY dblink SYSTEM "dblink.sgml"> <!ENTITY dict-int SYSTEM "dict-int.sgml"> <!ENTITY dict-xsyn SYSTEM "dict-xsyn.sgml">
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