On Fri, Jul 10, 2015 at 11:43:08AM -0400, Jeff King wrote:
> But something like:
>
> [include "gitdir:bar"]
> path = foo
>
> could do so only when the "gitdir:bar" conditional is satisfied (where
> that is just a syntax I made up to mean fnmatch("bar", $GIT_DIR)). So
> like user.<pattern>.*, we still put our section-specific hack into one
> special section, but that one place is capable of chaining to multiple
> other config keys. :)
Here's a sketch if anybody is inclined to pick it up and run with it.
Note that I did not think too hard about little things like the
de-anchoring.
---
diff --git a/config.c b/config.c
index 29fa012..47b01f0 100644
--- a/config.c
+++ b/config.c
@@ -139,9 +139,45 @@ static int handle_path_include(const char *path, struct
config_include_data *inc
return ret;
}
+static int include_condition_is_true(const char *cond, int cond_len)
+{
+ const char *value;
+
+ /* no condition (i.e., "include.path") is always true */
+ if (!cond)
+ return 1;
+
+ /*
+ * It's OK to run over cond_len in our checks here, as that just pushes
+ * us past the final ".", which cannot match any of our prefixes.
+ */
+ if (skip_prefix(cond, "gitdir:", &value)) {
+ struct strbuf text = STRBUF_INIT;
+ struct strbuf pattern = STRBUF_INIT;
+ int ret;
+
+ strbuf_add_absolute_path(&text, get_git_dir());
+
+ /* de-anchor match for convenience */
+ strbuf_addstr(&pattern, "**");
+ strbuf_add(&pattern, value, cond_len - (value - cond));
+ strbuf_addstr(&pattern, "**");
+
+ ret = !wildmatch(pattern.buf, text.buf, 0, NULL);
+ strbuf_release(&pattern);
+ strbuf_release(&text);
+ return ret;
+ }
+
+ /* unknown conditionals are always false */
+ return 0;
+}
+
int git_config_include(const char *var, const char *value, void *data)
{
struct config_include_data *inc = data;
+ const char *cond, *key;
+ int cond_len;
int ret;
/*
@@ -152,8 +188,12 @@ int git_config_include(const char *var, const char *value,
void *data)
if (ret < 0)
return ret;
- if (!strcmp(var, "include.path"))
- ret = handle_path_include(value, inc);
+ if (!parse_config_key(var, "include", &cond, &cond_len, &key) &&
+ include_condition_is_true(cond, cond_len)) {
+ if (!strcmp(key, "path"))
+ ret = handle_path_include(value, inc);
+ /* else we do not know about this type of include; ignore */
+ }
return ret;
}
--
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