diff options
Diffstat (limited to 'storage/myisam/myisam_ftdump.c')
| -rw-r--r-- | storage/myisam/myisam_ftdump.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/storage/myisam/myisam_ftdump.c b/storage/myisam/myisam_ftdump.c new file mode 100644 index 00000000000..28aac0a8ecf --- /dev/null +++ b/storage/myisam/myisam_ftdump.c @@ -0,0 +1,277 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +/* Written by Sergei A. Golubchik, who has a shared copyright to this code + added support for long options (my_getopt) 22.5.2002 by Jani Tolonen */ + +#include "ftdefs.h" +#include <my_getopt.h> + +static void usage(); +static void complain(int val); +static my_bool get_one_option(int, const struct my_option *, char *); + +static int count=0, stats=0, dump=0, lstats=0; +static my_bool verbose; +static char *query=NULL; +static uint lengths[256]; + +#define MAX_LEN (HA_FT_MAXBYTELEN+10) +#define HOW_OFTEN_TO_WRITE 10000 + +static struct my_option my_long_options[] = +{ + {"dump", 'd', "Dump index (incl. data offsets and word weights).", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"stats", 's', "Report global stats.", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"verbose", 'v', "Be verbose.", + (gptr*) &verbose, (gptr*) &verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"count", 'c', "Calculate per-word stats (counts and global weights).", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"length", 'l', "Report length distribution.", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"help", 'h', "Display help and exit.", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"help", '?', "Synonym for -h.", + 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0} +}; + + +int main(int argc,char *argv[]) +{ + int error=0, subkeys; + uint keylen, keylen2=0, inx, doc_cnt=0; + float weight= 1.0; + double gws, min_gws=0, avg_gws=0; + MI_INFO *info; + char buf[MAX_LEN], buf2[MAX_LEN], buf_maxlen[MAX_LEN], buf_min_gws[MAX_LEN]; + ulong total=0, maxlen=0, uniq=0, max_doc_cnt=0; + struct { MI_INFO *info; } aio0, *aio=&aio0; /* for GWS_IN_USE */ + + MY_INIT(argv[0]); + if ((error= handle_options(&argc, &argv, my_long_options, get_one_option))) + exit(error); + if (count || dump) + verbose=0; + if (!count && !dump && !lstats && !query) + stats=1; + + if (verbose) + setbuf(stdout,NULL); + + if (argc < 2) + usage(); + + { + char *end; + inx= (uint) strtoll(argv[1], &end, 10); + if (*end) + usage(); + } + + init_key_cache(dflt_key_cache,MI_KEY_BLOCK_LENGTH,USE_BUFFER_INIT, 0, 0); + + if (!(info=mi_open(argv[0],2,HA_OPEN_ABORT_IF_LOCKED))) + { + error=my_errno; + goto err; + } + + *buf2=0; + aio->info=info; + + if ((inx >= info->s->base.keys) || + !(info->s->keyinfo[inx].flag & HA_FULLTEXT)) + { + printf("Key %d in table %s is not a FULLTEXT key\n", inx, info->filename); + goto err; + } + + mi_lock_database(info, F_EXTRA_LCK); + + info->lastpos= HA_OFFSET_ERROR; + info->update|= HA_STATE_PREV_FOUND; + + while (!(error=mi_rnext(info,NULL,inx))) + { + keylen=*(info->lastkey); + + subkeys=ft_sintXkorr(info->lastkey+keylen+1); + if (subkeys >= 0) + weight=*(float*)&subkeys; + +#ifdef HAVE_SNPRINTF + snprintf(buf,MAX_LEN,"%.*s",(int) keylen,info->lastkey+1); +#else + sprintf(buf,"%.*s",(int) keylen,info->lastkey+1); +#endif + my_casedn_str(default_charset_info,buf); + total++; + lengths[keylen]++; + + if (count || stats) + { + doc_cnt++; + if (strcmp(buf, buf2)) + { + if (*buf2) + { + uniq++; + avg_gws+=gws=GWS_IN_USE; + if (count) + printf("%9u %20.7f %s\n",doc_cnt,gws,buf2); + if (maxlen<keylen2) + { + maxlen=keylen2; + strmov(buf_maxlen, buf2); + } + if (max_doc_cnt < doc_cnt) + { + max_doc_cnt=doc_cnt; + strmov(buf_min_gws, buf2); + min_gws=gws; + } + } + strmov(buf2, buf); + keylen2=keylen; + doc_cnt=0; + } + } + if (dump) + { + if (subkeys>=0) + printf("%9lx %20.7f %s\n", (long) info->lastpos,weight,buf); + else + printf("%9lx => %17d %s\n",(long) info->lastpos,-subkeys,buf); + } + if (verbose && (total%HOW_OFTEN_TO_WRITE)==0) + printf("%10ld\r",total); + } + mi_lock_database(info, F_UNLCK); + + if (count || stats) + { + doc_cnt++; + if (*buf2) + { + uniq++; + avg_gws+=gws=GWS_IN_USE; + if (count) + printf("%9u %20.7f %s\n",doc_cnt,gws,buf2); + if (maxlen<keylen2) + { + maxlen=keylen2; + strmov(buf_maxlen, buf2); + } + if (max_doc_cnt < doc_cnt) + { + max_doc_cnt=doc_cnt; + strmov(buf_min_gws, buf2); + min_gws=gws; + } + } + } + + if (stats) + { + count=0; + for (inx=0;inx<256;inx++) + { + count+=lengths[inx]; + if ((ulong) count >= total/2) + break; + } + printf("Total rows: %lu\nTotal words: %lu\n" + "Unique words: %lu\nLongest word: %lu chars (%s)\n" + "Median length: %u\n" + "Average global weight: %f\n" + "Most common word: %lu times, weight: %f (%s)\n", + (long) info->state->records, total, uniq, maxlen, buf_maxlen, + inx, avg_gws/uniq, max_doc_cnt, min_gws, buf_min_gws); + } + if (lstats) + { + count=0; + for (inx=0; inx<256; inx++) + { + count+=lengths[inx]; + if (count && lengths[inx]) + printf("%3u: %10lu %5.2f%% %20lu %4.1f%%\n", inx, + (ulong) lengths[inx],100.0*lengths[inx]/total,(ulong) count, + 100.0*count/total); + } + } + +err: + if (error && error != HA_ERR_END_OF_FILE) + printf("got error %d\n",my_errno); + if (info) + mi_close(info); + return 0; +} + + +static my_bool +get_one_option(int optid, const struct my_option *opt __attribute__((unused)), + char *argument __attribute__((unused))) +{ + switch(optid) { + case 'd': + dump=1; + complain(count || query); + break; + case 's': + stats=1; + complain(query!=0); + break; + case 'c': + count= 1; + complain(dump || query); + break; + case 'l': + lstats=1; + complain(query!=0); + break; + case '?': + case 'h': + usage(); + } + return 0; +} + +#include <help_start.h> + +static void usage() +{ + printf("Use: myisam_ftdump <table_name> <index_num>\n"); + my_print_help(my_long_options); + my_print_variables(my_long_options); + NETWARE_SET_SCREEN_MODE(1); + exit(1); +} + +#include <help_end.h> + +static void complain(int val) /* Kinda assert :-) */ +{ + if (val) + { + printf("You cannot use these options together!\n"); + exit(1); + } +} |