Show usage count of tags in listing.

README.md

@@ -236,7 +236,7 @@ Shell completion scripts for Bash, Fish and Zsh can be found in respective subdi
   - --sall : match all the keywords in URL, title or tags.
   - --deep : match **substrings** (`match` matches `rematched`) in URL, title and tags.
   - --sreg : match a regular expression (ignores --deep).
-  - --stag : search bookmarks by a tag, or show all tags alphabetically (if no arguments).
+  - --stag : search bookmarks by a tag, or show all tags alphabetically with usage count (if no arguments).
   - Search results are indexed serially. This index is different from actual database index of a bookmark record which is shown in bold within `[]` after the URL.
 - **Encryption** is optional and manual. AES256 algorithm is used. To use encryption, the database file should be unlocked (-k) before using buku and locked (-l) afterwards. Between these 2 operations, the database file lies unencrypted on the disk, and NOT in memory. Also, note that the database file is *unencrypted on creation*.
 - **Proxy** support: environment variable *https_proxy*, if defined, is used to tunnel data for both http and https connections. The supported format is:

buku.1

@@ -53,7 +53,7 @@ Bookmarks with immutable titles are listed with bold '(L)' after the URL.
   - --sall : match all the keywords in URL, title or tags.
   - --deep : match \fBsubstrings\fR (`match` matches `rematched`) in URL, title and tags.
   - --sreg : match a regular expression (ignores --deep).
-  - --stag : search bookmarks by a tag, or show all tags alphabetically (if no arguments).
+  - --stag : search bookmarks by a tag, or show all tags alphabetically with usage count (if no arguments).
   - Search results are indexed serially. This index is different from actual database index of a bookmark record which is shown in bold within '[]' after the URL.
 .PP
 \fIEncryption\fR is optional and manual. AES256 algorithm is used. To use encryption, the database file should be unlocked (-k) before using buku and locked (-l) afterwards. Between these 2 operations, the database file lies unencrypted on the disk, and NOT in memory. Also, note that the database file is \fBunencrypted on creation\fR.
@@ -113,7 +113,7 @@ Scan for a regular expression match.
 Search modifier to match substrings. Works with --sany, --sall.
 .TP
 .BI \--stag " [...]"
-Search bookmarks by a tag. List all tags alphabetically, if no arguments.
+Search bookmarks by a tag. List all tags alphabetically, if no arguments. The usage count (number of bookmarks having the tag) is shown within first brackets.
 .SH ENCRYPTION OPTIONS
 .TP
 .BI \-l " " \--lock " [N]"

buku.py

@@ -1078,26 +1078,31 @@ class BukuDb:
         '''Get list of tags in DB
 
         :return: list of unique tags sorted alphabetically
+        :return: a dictionary of {tag:usage_count}
         '''
 
         tags = []
         unique_tags = []
-        query = 'SELECT DISTINCT tags FROM bookmarks ORDER BY tags'
+        dic = {}
-        for row in self.cur.execute(query):
+        qry = 'SELECT DISTINCT tags, COUNT(tags) FROM bookmarks GROUP BY tags'
+        for row in self.cur.execute(qry):
             tagset = row[0].strip(DELIM).split(DELIM)
             for tag in tagset:
                 if tag not in tags:
+                    dic[tag] = row[1]
                     tags += (tag,)
+                else:
+                    dic[tag] += row[1]
 
         if len(tags) == 0:
             return tags
 
         if tags[0] == '':
-            unique_tags = sorted(tags[1:], key=str.lower)
+            unique_tags = sorted(tags[1:])
         else:
-            unique_tags = sorted(tags, key=str.lower)
+            unique_tags = sorted(tags)
 
-        return unique_tags
+        return unique_tags, dic
 
     def replace_tag(self, orig, new=None):
         '''Replace orig tags with new tags in DB for all records.
@@ -1642,7 +1647,7 @@ def taglist_subprompt(obj):
     :return: new command string
     '''
 
-    unique_tags = obj.get_all_tags()
+    unique_tags, dic = obj.get_all_tags()
     msg = '\x1b[7mbuku (? for help)\x1b[0m '
     new_results = True
 
@@ -1654,7 +1659,7 @@ def taglist_subprompt(obj):
             else:
                 count = 1
                 for tag in unique_tags:
-                    print('%6d. %s' % (count, tag))
+                    print('%6d. %s (%d)' % (count, tag, dic[tag]))
                     count += 1
 
         try:
@@ -2401,10 +2406,10 @@ def main():
         if len(args.stag) > 0:
             search_results = bdb.search_by_tag(' '.join(args.stag))
         else:
-            unique_tags = bdb.get_all_tags()
+            unique_tags, dic = bdb.get_all_tags()
             count = 1
             for tag in unique_tags:
-                print('%6d. %s' % (count, tag))
+                print('%6d. %s (%d)' % (count, tag, dic[tag]))
                 count += 1
 
     if search_results: