[Tracker] PATCH: v2 Simplified and improved extraction of oasis text files.

[Karl Relton <karllinuxtest relton ntlworld com>]

My first patch inadvertently set the wrong tag type - this patch has that corrected.

----

As per thread starting at
http://mail.gnome.org/archives/tracker-list/2012-April/msg00012.html

here is a proposed patch that simplifies (and improves) the indexing of
oasis text files (.odt files). With this patch you get alot more of the
content indexed on a typical file saved by Libreoffice, and so they are
far more likely to show up in searches.

Karl

--- tracker-0.14.0.orig/src/tracker-extract/tracker-extract-oasis.c     2012-04-09 13:31:04.132949981 +0100
+++ tracker-0.14.0/src/tracker-extract/tracker-extract-oasis.c  2012-04-09 19:13:15.553943645 +0100
@@ -59,7 +59,6 @@ typedef struct {
 
 typedef struct {
        ODTTagType current;
-       gboolean styles_present;
        ODTFileType file_type;
        GString *content;
        gulong bytes_pending;
@@ -128,7 +127,6 @@ extract_oasis_content (const gchar
        /* Create parse info */
        info.current = ODT_TAG_TYPE_UNKNOWN;
        info.file_type = file_type;
-       info.styles_present = FALSE;
        info.content = g_string_new ("");
        info.bytes_pending = total_bytes;
 
@@ -391,45 +389,12 @@ xml_start_element_handler_content (GMark
 
        switch (data->file_type) {
        case FILE_TYPE_ODT:
-               if ((g_ascii_strcasecmp (element_name, "text:table-of-content") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:table-index") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:illustration-index") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:section") == 0)) {
-                       data->styles_present = TRUE;
-               } else if (g_ascii_strcasecmp (element_name, "table:table-cell") == 0) {
-                       data->current = ODT_TAG_TYPE_WORD_TEXT;
-               } else if (g_ascii_strcasecmp (element_name, "text:p") == 0) {
-                       if (data->styles_present) {
-                               data->current = ODT_TAG_TYPE_WORD_TEXT;
-                               break;
-                       }
-
-                       for (a = attribute_names, v = attribute_values; *a; ++a, ++v) {
-                               if (g_ascii_strcasecmp (*a, "text:style-name") != 0) {
-                                       continue;
-                               }
-
-                               if ((g_ascii_strcasecmp (*v, "title-article") == 0) ||
-                                   (g_ascii_strcasecmp (*v, "para-padding") == 0) ||
-                                   (g_ascii_strcasecmp (*v, "para-screen") == 0)) {
-                                       data->current = ODT_TAG_TYPE_WORD_TEXT;
-                               }
-                       }
-               } else if (g_ascii_strcasecmp (element_name, "text:h") == 0) {
-                       for (a = attribute_names, v = attribute_values; *a; ++a, ++v) {
-                               if (g_ascii_strcasecmp (*a, "text:style-name") != 0) {
-                                       continue;
-                               }
-
-                               if (g_ascii_strncasecmp (*v, "Heading", 7) == 0) {
-                                       data->current = ODT_TAG_TYPE_WORD_TEXT;
-                               }
-                       }
-               } else if (g_ascii_strcasecmp (element_name, "text:span") == 0) {
-                       data->current = ODT_TAG_TYPE_WORD_TEXT;
-               } else if ((g_ascii_strcasecmp (element_name, "text:a") == 0) ||
-                          (g_ascii_strcasecmp (element_name, "text:s") == 0)) {
-                       data->current = ODT_TAG_TYPE_WORD_TEXT;
+               if ((g_ascii_strcasecmp (element_name, "text:p") == 0) ||
+                   (g_ascii_strcasecmp (element_name, "text:h") == 0) ||
+                   (g_ascii_strcasecmp (element_name, "text:a") == 0) ||
+                   (g_ascii_strcasecmp (element_name, "text:span") == 0) ||
+                   (g_ascii_strcasecmp (element_name, "table:table-cell")) == 0) {
+                       data->current = ODT_TAG_TYPE_WORD_TEXT;
                } else {
                        data->current = -1;
                }
@@ -461,23 +426,8 @@ xml_end_element_handler_content (GMarkup
 {
        ODTContentParseInfo *data = user_data;
 
-       switch (data->file_type) {
-       case FILE_TYPE_ODT:
-               if ((g_ascii_strcasecmp (element_name, "text:table-of-content") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:table-index") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:illustration-index") == 0) ||
-                   (g_ascii_strcasecmp (element_name, "text:section") == 0)) {
-                       data->styles_present = FALSE;
-               }
-               break;
-       default:
-               break;
-       }
+       data->current = -1;
 
-       if ((g_ascii_strcasecmp (element_name, "text:a") != 0) &&
-           (g_ascii_strcasecmp (element_name, "text:s") != 0)) {
-               data->current = -1;
-       }
 }
 
 static void