On 3 October 2014 14:04, Andy Bradford
<amb-sendok-1414951486.goflecofghbmjnaaa...@bradfords.org> wrote:
> Are you simply looking for a way to be notified via email when there are
> changes that have been updated into your working checkout?
Yes. I want an email when a change happens, but not an empty email
every 5 minutes (from each of the half dozen fossils I want up-to-date
on the server).
> If so, I think the above script could be substituted for ``fossil update
> -q'':
>
> shouldiupdate.sh && fossil update 2>&1 | mail -s 'Fossil update' m...@he.re
Absolutely. It should work fine and it's better than my original
shell-only version. I don't really want to do it that way for a
couple of reasons: 1) I don't want to *have* to be running a fossil
server (I do updates via ssh); and 2) it seems like a lot of overhead
(execution as well as "old version" files) and redundancy.
In the interests of getting into the code a bit, I looked at
implementing this. Making it truly a quiet option was going to
require fairly major surgery, but after a bit of thought, I realized
that all I really needed was the exit status. I thought of making
update always exit with this status (a 1-line change), but I was
worried about legacy issues so I added that with a switch (patch
attached - 1 line of code beyond declaring and parsing the switch).
So instead of ``fossil update -q" I would write ``fossil update -s -n
>/dev/null". I think this is better as it's more incremental and also
more orthogonal.
I'd love for this (or something like it - if someone has a better name
for the switch, or wants to implement a real -q, or wants to make
update always exit with this status) to be part of fossil, as I don't
really want to maintain a fork.
Thanks, ../Dave
: ~/fs/fossil ; fs diff --from trunk
Index: src/update.c
==================================================================
--- src/update.c
+++ src/update.c
@@ -86,10 +86,16 @@
** new checkout.
**
** The -n or --dry-run option causes this command to do a "dry run".
** It prints out what would have happened but does not actually make
** any changes to the current checkout or the repository.
+**
+** The -s or --status option causes this command to produce a false
+** exit status if no work was done (or would be done in the case of
+** a "dry run"). This exit status is testable in a shell. Does not
+** otherwise affect the operation of the command. Typically used with
+** the -n or --dry-run option.
**
** The -v or --verbose option prints status information about
** unchanged files in addition to those file that actually do change.
**
** Options:
@@ -96,10 +102,11 @@
** --case-sensitive <BOOL> override case-sensitive setting
** --debug print debug information on stdout
** --latest acceptable in place of VERSION, update to latest version
** --force-missing force update if missing content after sync
** -n|--dry-run If given, display instead of run actions
+** -s|--status Exits with false status if no work (would be) done
** -v|--verbose print status information about all files
** -W|--width <num> Width of lines (default is to auto-detect). Must be >20
** or 0 (= no limit, resulting in a single line per entry).
**
** See also: revert
@@ -108,10 +115,11 @@
int vid; /* Current version */
int tid=0; /* Target version - version we are changing to */
Stmt q;
int latestFlag; /* --latest. Pick the latest version if true */
int dryRunFlag; /* -n or --dry-run. Do a dry run */
+ int statusFlag; /* -s or --status. Produces false exit
status if no work (would be) done */
int verboseFlag; /* -v or --verbose. Output extra information */
int forceMissingFlag; /* --force-missing. Continue if missing content */
int debugFlag; /* --debug option */
int setmtimeFlag; /* --setmtime. Set mtimes on files */
int nChng; /* Number of file renames */
@@ -136,10 +144,11 @@
}
}else{
width = -1;
}
latestFlag = find_option("latest",0, 0)!=0;
+ statusFlag = find_option("status","s",0)!=0;
dryRunFlag = find_option("dry-run","n",0)!=0;
if( !dryRunFlag ){
dryRunFlag = find_option("nochange",0,0)!=0; /* deprecated */
}
verboseFlag = find_option("verbose","v",0)!=0;
@@ -582,10 +591,11 @@
}
if( !internalUpdate ) undo_finish();
if( setmtimeFlag ) vfile_check_signature(tid, CKSIG_SETMTIME);
db_end_transaction(0);
}
+ if ( statusFlag ) fossil_exit(nUpdate==0);
}
/*
** Make sure empty directories are created
*/
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