Git storage: change time encoding in directory names

We used to use [[yyyy-]mm-]nn-ddd-hh:mm:ss[~hex] in our git storage format
for directory that contained dives. Problem with the is that on Windows
the colon ':' is an illegal character in a filename. So libgit2 refuses to
clone such a repository on Windows.

So instead we now always write dive directories in git repositories as
[[yyyy-]mm-]nn-ddd-hh=mm=ss[~hex] which replaces the ':' with an '='.

Of course we load / parse both formats so that older formats still work.
The next time they are written all the names change which causes rather
huge commits, but that's the only way I see for cloud storage to work on
Windows.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2015-06-19 11:45:24 -07:00
parent 845030a8ad
commit 56b82e0ecf
2 changed files with 7 additions and 5 deletions

View file

@ -1129,7 +1129,8 @@ static int dive_trip_directory(const char *root, const char *name)
} }
/* /*
* Dive directory, name is [[yyyy-]mm-]nn-ddd-hh:mm:ss[~hex], * Dive directory, name is [[yyyy-]mm-]nn-ddd-hh:mm:ss[~hex] in older git repositories
* but [[yyyy-]mm-]nn-ddd-hh=mm=ss[~hex] in newer repos as ':' is an illegal character for Windows files
* and 'timeoff' points to what should be the time part of * and 'timeoff' points to what should be the time part of
* the name (the first digit of the hour). * the name (the first digit of the hour).
* *
@ -1156,8 +1157,8 @@ static int dive_directory(const char *root, const char *name, int timeoff)
if (mday_off < 0) if (mday_off < 0)
return GIT_WALK_SKIP; return GIT_WALK_SKIP;
/* Get the time of day */ /* Get the time of day -- parse both time formats so we can read old repos when not on Windows */
if (sscanf(name+timeoff, "%d:%d:%d", &h, &m, &s) != 3) if (sscanf(name+timeoff, "%d:%d:%d", &h, &m, &s) != 3 && sscanf(name+timeoff, "%d=%d=%d", &h, &m, &s) != 3)
return GIT_WALK_SKIP; return GIT_WALK_SKIP;
if (!validate_time(h, m, s)) if (!validate_time(h, m, s))
return GIT_WALK_SKIP; return GIT_WALK_SKIP;
@ -1307,7 +1308,7 @@ static int walk_tree_directory(const char *root, const git_tree_entry *entry)
* We know the len is at least 3, because we had at least * We know the len is at least 3, because we had at least
* two digits and a dash * two digits and a dash
*/ */
if (name[len-3] == ':') if (name[len-3] == ':' || name[len-3] == '=')
return dive_directory(root, name, len-8); return dive_directory(root, name, len-8);
if (digits != 2) if (digits != 2)

View file

@ -549,7 +549,8 @@ static void create_dive_name(struct dive *dive, struct membuffer *name, struct t
if (tm.tm_mon != dirtm->tm_mon) if (tm.tm_mon != dirtm->tm_mon)
put_format(name, "%02u-", tm.tm_mon+1); put_format(name, "%02u-", tm.tm_mon+1);
put_format(name, "%02u-%s-%02u:%02u:%02u", /* a colon is an illegal char in a file name on Windows - use an '=' instead */
put_format(name, "%02u-%s-%02u=%02u=%02u",
tm.tm_mday, weekday[tm.tm_wday], tm.tm_mday, weekday[tm.tm_wday],
tm.tm_hour, tm.tm_min, tm.tm_sec); tm.tm_hour, tm.tm_min, tm.tm_sec);
} }