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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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14
convert.c
View File

@ -457,7 +457,7 @@ static struct convert_driver {
static int read_convert_config(const char *var, const char *value, void *cb)
{
const char *ep, *name;
const char *key, *name;
int namelen;
struct convert_driver *drv;
@ -465,10 +465,8 @@ static int read_convert_config(const char *var, const char *value, void *cb)
* External conversion drivers are configured using
* "filter.<name>.variable".
*/
if (prefixcmp(var, "filter.") || (ep = strrchr(var, '.')) == var + 6)
if (parse_config_key(var, "filter", &name, &namelen, &key) < 0 || !name)
return 0;
name = var + 7;
namelen = ep - name;
for (drv = user_convert; drv; drv = drv->next)
if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
break;
@ -479,8 +477,6 @@ static int read_convert_config(const char *var, const char *value, void *cb)
user_convert_tail = &(drv->next);
}
ep++;
/*
* filter.<name>.smudge and filter.<name>.clean specifies
* the command line:
@ -490,13 +486,13 @@ static int read_convert_config(const char *var, const char *value, void *cb)
* The command-line will not be interpolated in any way.
*/
if (!strcmp("smudge", ep))
if (!strcmp("smudge", key))
return git_config_string(&drv->smudge, var, value);
if (!strcmp("clean", ep))
if (!strcmp("clean", key))
return git_config_string(&drv->clean, var, value);
if (!strcmp("required", ep)) {
if (!strcmp("required", key)) {
drv->required = git_config_bool(var, value);
return 0;
}

14
ll-merge.c
View File

@ -222,7 +222,7 @@ static const char *default_ll_merge;
static int read_merge_config(const char *var, const char *value, void *cb)
{
struct ll_merge_driver *fn;
const char *ep, *name;
const char *key, *name;
int namelen;
if (!strcmp(var, "merge.default")) {
@ -236,15 +236,13 @@ static int read_merge_config(const char *var, const char *value, void *cb)
* especially, we do not want to look at variables such as
* "merge.summary", "merge.tool", and "merge.verbosity".
*/
if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 5)
if (parse_config_key(var, "merge", &name, &namelen, &key) < 0 || !name)
return 0;
/*
* Find existing one as we might be processing merge.<name>.var2
* after seeing merge.<name>.var1.
*/
name = var + 6;
namelen = ep - name;
for (fn = ll_user_merge; fn; fn = fn->next)
if (!strncmp(fn->name, name, namelen) && !fn->name[namelen])
break;
@ -256,16 +254,14 @@ static int read_merge_config(const char *var, const char *value, void *cb)
ll_user_merge_tail = &(fn->next);
}
ep++;
if (!strcmp("name", ep)) {
if (!strcmp("name", key)) {
if (!value)
return error("%s: lacks value", var);
fn->description = xstrdup(value);
return 0;
}
if (!strcmp("driver", ep)) {
if (!strcmp("driver", key)) {
if (!value)
return error("%s: lacks value", var);
/*
@ -289,7 +285,7 @@ static int read_merge_config(const char *var, const char *value, void *cb)
return 0;
}
if (!strcmp("recursive", ep)) {
if (!strcmp("recursive", key)) {
if (!value)
return error("%s: lacks value", var);
fn->recursive = xstrdup(value);

13
userdiff.c
View File

@ -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);