stable now but there are GIANT PIECES MISSING
[citadel.git] / citadel / modules / fulltext / ft_wordbreaker.c
index 4a03e1b77c6289877ba42815a439bd0e925d4b11..b236de362643d94d3b61c605c7586c63bb4a8306 100644 (file)
@@ -1,11 +1,17 @@
 /*
- * $Id$
- *
  * Default wordbreaker module for full text indexing.
  *
+ * Copyright (c) 2005-2017 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3.
+ *
+ * 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.
  */
 
-
 #include "sysdep.h"
 #include <stdlib.h>
 #include <unistd.h>
 #include <pwd.h>
 #include <errno.h>
 #include <sys/types.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
-#endif
-
+#include <time.h>
 #include <sys/wait.h>
 #include <ctype.h>
 #include <string.h>
@@ -43,6 +38,7 @@
 #include "control.h"
 #include "ft_wordbreaker.h"
 #include "crc16.h"
+#include "ctdl_module.h"
 
 /*
  * Noise words are not included in search indices.
@@ -112,6 +108,8 @@ static char *noise_words[] = {
        "would",
        "your"
 };
+#define NUM_NOISE (sizeof(noise_words) / sizeof(char *))
+
 
 /*
  * Compare function
@@ -128,21 +126,21 @@ int intcmp(const void *rec1, const void *rec2) {
 }
 
 
-void wordbreaker(char *text, int *num_tokens, int **tokens) {
+void wordbreaker(const char *text, int *num_tokens, int **tokens) {
 
        int wb_num_tokens = 0;
        int wb_num_alloc = 0;
        int *wb_tokens = NULL;
 
-       char *ptr;
-       char *word_start;
-       char *word_end;
+       const char *ptr;
+       const char *word_start;
+       const char *word_end;
        char ch;
        int word_len;
        char word[256];
        int i;
        int word_crc;
-
+       
        if (text == NULL) {             /* no NULL text please */
                *num_tokens = 0;
                *tokens = NULL;
@@ -168,12 +166,11 @@ void wordbreaker(char *text, int *num_tokens, int **tokens) {
                ch = *ptr;
                if ( (!isalnum(ch)) && (word_start) ) {
                        word_end = ptr;
-//                     --word_end;
 
                        /* extract the word */
                        word_len = word_end - word_start;
                        if (word_len >= sizeof word) {
-                               lprintf(CTDL_DEBUG, "Invalid word length: %d\n", word_len);
+                               syslog(LOG_DEBUG, "wordbreaker: invalid word length: %d", word_len);
                                safestrncpy(word, word_start, sizeof word);
                                word[(sizeof word) - 1] = 0;
                        }
@@ -184,23 +181,22 @@ void wordbreaker(char *text, int *num_tokens, int **tokens) {
                        word_start = NULL;
 
                        /* are we ok with the length? */
-                       if ( (word_len >= WB_MIN)
-                          && (word_len <= WB_MAX) ) {
+                       if ( (word_len >= WB_MIN) && (word_len <= WB_MAX) ) {
                                for (i=0; i<word_len; ++i) {
                                        word[i] = tolower(word[i]);
                                }
                                /* disqualify noise words */
-                               for (i=0; i<(sizeof(noise_words)/sizeof(char *)); ++i) {
+                               for (i=0; i<NUM_NOISE; ++i) {
                                        if (!strcmp(word, noise_words[i])) {
                                                word_len = 0;
                                                break;
                                        }
                                }
+
                                if (word_len == 0)
                                        continue;
 
-                               word_crc = (int)
-                                       CalcCRC16Bytes(word_len, word);
+                               word_crc = (int) CalcCRC16Bytes(word_len, word);
 
                                ++wb_num_tokens;
                                if (wb_num_tokens > wb_num_alloc) {