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convert some config callbacks to parse_config_key

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These callers can drop some inline pointer arithmetic and
magic offset constants, making them more readable and less
error-prone (those constants had to match the lengths of
strings, but there is no automatic verification of that
fact).

The "ep" pointer (presumably for "end pointer"), which
points to the final key segment of the config variable, is
given the more standard name "key" to describe its function
rather than its derivation.

Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2013-01-23 01:24:23 -05:00
committed by Junio C Hamano
parent 785a042981
commit d731f0ade1
3 changed files with 13 additions and 28 deletions
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13
userdiff.c
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@ -188,20 +188,13 @@ static struct userdiff_driver *parse_driver(const char *var,
const char *value, const char *type)
{
struct userdiff_driver *drv;
const char *dot;
const char *name;
const char *name, *key;
int namelen;
if (prefixcmp(var, "diff."))
return NULL;
dot = strrchr(var, '.');
if (dot == var + 4)
return NULL;
if (strcmp(type, dot+1))
if (parse_config_key(var, "diff", &name, &namelen, &key) < 0 ||
!name || strcmp(type, key))
return NULL;
name = var + 5;
namelen = dot - name;
drv = userdiff_find_by_namelen(name, namelen);
if (!drv) {
ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);