Re: algorithm of incremental updating

[Shigio Yamaguchi]

> OK. I'll try to examine the method which satisfy both of the two requirements,
> one is your intention, another is keeping logging message.
> Please wait a little. (I'll try it in next month.)

Thank you for your waiting.
How about the following?

0. Changing specification

   - 'Deleting' moved to the last and display all information at a time.
   - 'GTAGS..GRTAGS..GSYMS..' are displayed real-time.

1. Original specification

[XXX Xxx 99 99:99:99 XXX 9999] Gtags started.
 Using default configuration.
 Tag found in '/tmp/global-4.8.6'.
 Incremental update.
 Updating tags of libutil/strbuf.c ...GTAGS..GRTAGS..GSYMS.. Done.
 Adding tags of libutil/add.c ...GTAGS..GRTAGS..GSYMS.. Done.
 Deleting tags of libutil/strbuf.h ...GTAGS..GRTAGS..GSYMS.. Done.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Global databases have been modified.
[XXX Xxx 99 99:99:99 XXX 9999] Done.

2. New specification

[XXX Xxx 99 99:99:99 XXX 9999] Gtags started.
 Using default configuration.
 Tag found in '/tmp/XXXXX
 Incremental update.
 Deleting tags for deleting libutil/strbuf.h and for updating 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                        libutil/strbuf.c ...GTAGS..GRTAGS..GSYMS.. Done.
                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Updating tags of libutil/strbuf.c ...GTAGS..GRTAGS..GSYMS.. Done.
 Adding tags of libutil/add.c ...GTAGS..GRTAGS..GSYMS.. Done.
 Global databases have been modified.
[XXX Xxx 99 99:99:99 XXX 9999] Done.


3. Implementation

This is pseudo code.

incremental(dbpath, cwd)
{
        addlist = files which should be added
        updatelist = files which should be updated
        deletelist = files which should be deleted

        deleteset = fid of updatelist and deletelist
        (fidset)

        /* Open all tags */
        foreach db (GTAGS, GRTAGS, GSYMS) {
                gtop[db] = gtags_open(db)
        }
        if (deleteset) {
                log "Deleting tags for deleting <deletelist> and updating 
<updatelist>."
                foreach db (GTAGS, GRTAGS, GSYMS) {
                        log "..<name of tag>"
                        gtags_delete_by_fidset(gtop[db], deleteset, max_fid);
                }
                log newline
        }
        if (updatelist) {
                foreach p (updatelist) {
                        log "Updating tags of <p>"
                        foreach db (GTAGS, GRTAGS, GSYMS) {
                                log "..<name of tag>"
                                gtags_add(gtop[db], p);
                        }
                        log newline
                }
        }
        for (addlist) {
                foreach p (addlist) {
                        log "Adding tags of <p>"
                        foreach db (GTAGS, GRTAGS, GSYMS) {
                                log "..<name of tag>"
                                gtags_add(gtop[db], p);
                        }
                        log newline
                }
        }

        if (deletelist)
                foreach p (deletelist)
                        gpath_delete(p);
        /* Close all tags */
        foreach db (GTAGS, GRTAGS, GSYMS) {
                gtags_close(gtop[db]);  
        }
}

What do you think?
May I implement this?
--
Shigio YAMAGUCHI <address@hidden> - Tama Communications Corporation
PGP fingerprint: D1CB 0B89 B346 4AB6 5663  C4B6 3CA5 BBB3 57BE DDA3