Add a function, git_allattrs(), that reports on all attributes that
are set on a path.
Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
---
Please check that the function name conforms to git conventions.
Documentation/technical/api-gitattributes.txt | 45 +++++++++++++++++-------
attr.c | 43 +++++++++++++++++++++++
attr.h | 9 +++++
3 files changed, 84 insertions(+), 13 deletions(-)
diff --git a/Documentation/technical/api-gitattributes.txt b/Documentation/technical/api-gitattributes.txt
index ab3a84d..640240e 100644
--- a/Documentation/technical/api-gitattributes.txt
+++ b/Documentation/technical/api-gitattributes.txt
@@ -22,19 +22,6 @@ Data Structure
to `git_checkattr()` function, and receives the results.
-Calling Sequence
-----------------
-
-* Prepare an array of `struct git_attr_check` to define the list of
- attributes you would want to check. To populate this array, you would
- need to define necessary attributes by calling `git_attr()` function.
-
-* Call git_checkattr() to check the attributes for the path.
-
-* Inspect `git_attr_check` structure to see how each of the attribute in
- the array is defined for the path.
-
-
Attribute Values
----------------
@@ -58,6 +45,19 @@ If none of the above returns true, `.value` member points at a string
value of the attribute for the path.
+Querying Specific Attributes
+----------------------------
+
+* Prepare an array of `struct git_attr_check` to define the list of
+ attributes you would want to check. To populate this array, you would
+ need to define necessary attributes by calling `git_attr()` function.
+
+* Call `git_checkattr()` to check the attributes for the path.
+
+* Inspect `git_attr_check` structure to see how each of the attribute in
+ the array is defined for the path.
+
+
Example
-------
@@ -109,4 +109,23 @@ static void setup_check(void)
}
------------
+
+Querying All Attributes
+-----------------------
+
+To get the values of all attributes associated with a file:
+
+* Call `git_allattrs()`, which returns an array of `git_attr_check`
+ structures.
+
+* Iterate over the `git_attr_check` array to examine the attribute
+ names and values. The name of the attribute described by a
+ `git_attr_check` object can be retrieved via
+ `git_attr_name(check[i].attr)`. (Please note that no items will be
+ returned for unset attributes, so `ATTR_UNSET()` will return false
+ for all returned `git_array_check` objects.)
+
+* Free the `git_array_check` array.
+
+
(JC)
diff --git a/attr.c b/attr.c
index a261550..976c830 100644
--- a/attr.c
+++ b/attr.c
@@ -736,6 +736,49 @@ int git_checkattr(const char *path, int num, struct git_attr_check *check)
return 0;
}
+int git_allattrs(const char *path, int *num, struct git_attr_check **check)
+{
+ struct attr_stack *stk;
+ const char *cp;
+ int dirlen, pathlen, i, rem, count, j;
+
+ bootstrap_attr_stack();
+ for (i = 0; i < attr_nr; i++)
+ check_all_attr[i].value = ATTR__UNKNOWN;
+
+ pathlen = strlen(path);
+ cp = strrchr(path, '/');
+ if (!cp)
+ dirlen = 0;
+ else
+ dirlen = cp - path;
+ prepare_attr_stack(path, dirlen);
+ rem = attr_nr;
+ for (stk = attr_stack; 0 < rem && stk; stk = stk->prev)
+ rem = fill(path, pathlen, stk, rem);
+
+ /* Count the number of attributes that are set. */
+ count = 0;
+ for (i = 0; i < attr_nr; i++) {
+ const char *value = check_all_attr[i].value;
+ if (value != ATTR__UNSET && value != ATTR__UNKNOWN)
+ ++count;
+ }
+ *num = count;
+ *check = xmalloc(sizeof(*check_all_attr) * count);
+ j = 0;
+ for (i = 0; i < attr_nr; i++) {
+ const char *value = check_all_attr[i].value;
+ if (value != ATTR__UNSET && value != ATTR__UNKNOWN) {
+ (*check)[j].attr = check_all_attr[i].attr;
+ (*check)[j].value = value;
+ ++j;
+ }
+ }
+
+ return 0;
+}
+
void git_attr_set_direction(enum git_attr_direction new, struct index_state *istate)
{
enum git_attr_direction old = direction;
diff --git a/attr.h b/attr.h
index d4f875a..83202f0 100644
--- a/attr.h
+++ b/attr.h
@@ -38,6 +38,15 @@ char *git_attr_name(struct git_attr *);
int git_checkattr(const char *path, int, struct git_attr_check *);
+/*
+ * Retrieve all attributes that apply to the specified path. *num
+ * will be set the the number of attributes on the path; **check will
+ * be set to point at a newly-allocated array of git_attr_check
+ * objects describing the attributes and their values. *check must be
+ * free()ed by the caller.
+ */
+int git_allattrs(const char *path, int *num, struct git_attr_check **check);
+
enum git_attr_direction {
GIT_ATTR_CHECKIN,
GIT_ATTR_CHECKOUT,
--
1.7.6.8.gd2879
--
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