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authorMichael Haggerty <mhagger@alum.mit.edu>2011-08-04 04:36:23 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-08-04 22:53:18 (GMT)
commitee548df3005d976d4e6a78b3b4454fed812ea28c (patch)
tree8e961b3c8f30bdd1b89f4736902b755491d1ecad
parent7373eab48e284a808cde766831172d3447f9e320 (diff)
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Allow querying all attributes on a file
Add a function, git_all_attrs(), that reports on all attributes that are set on a path. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--Documentation/technical/api-gitattributes.txt44
-rw-r--r--attr.c28
-rw-r--r--attr.h9
3 files changed, 67 insertions, 14 deletions
diff --git a/Documentation/technical/api-gitattributes.txt b/Documentation/technical/api-gitattributes.txt
index ab3a84d..16ccb1c 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 +109,20 @@ static void setup_check(void)
}
------------
-(JC)
+
+Querying All Attributes
+-----------------------
+
+To get the values of all attributes associated with a file:
+
+* Call `git_all_attrs()`, 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.
diff --git a/attr.c b/attr.c
index ab30c81..658112e 100644
--- a/attr.c
+++ b/attr.c
@@ -747,6 +747,34 @@ int git_checkattr(const char *path, int num, struct git_attr_check *check)
return 0;
}
+int git_all_attrs(const char *path, int *num, struct git_attr_check **check)
+{
+ int i, count, j;
+
+ collect_all_attrs(path);
+
+ /* 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) * 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..9e22893 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_all_attrs(const char *path, int *num, struct git_attr_check **check);
+
enum git_attr_direction {
GIT_ATTR_CHECKIN,
GIT_ATTR_CHECKOUT,