gitweb: allow action specialization in page header

diff --git a/attr.c b/attr.c
index 8ba606c933088e27ac08aabb546b764745f8187e..6aff6951d38d7f672aeb9851eca88c6e5a26b950 100644 (file)
--- a/attr.c
+++ b/attr.c
@@ -1,5 +1,6 @@
 #define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
+#include "exec_cmd.h"
 #include "attr.h"
 
 const char git_attr__true[] = "(builtin)true";
@@ -10,6 +11,8 @@ static const char git_attr__unknown[] = "(builtin)unknown";
 #define ATTR__UNSET NULL
 #define ATTR__UNKNOWN git_attr__unknown
 
+static const char *attributes_file;
+
 /*
  * The basic design decision here is that we are not going to have
  * insanely large number of attributes.
@@ -462,6 +465,32 @@ static void drop_attr_stack(void)
        }
 }
 
+const char *git_etc_gitattributes(void)
+{
+       static const char *system_wide;
+       if (!system_wide)
+               system_wide = system_path(ETC_GITATTRIBUTES);
+       return system_wide;
+}
+
+int git_attr_system(void)
+{
+       return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
+}
+
+int git_attr_global(void)
+{
+       return !git_env_bool("GIT_ATTR_NOGLOBAL", 0);
+}
+
+static int git_attr_config(const char *var, const char *value, void *dummy)
+{
+       if (!strcmp(var, "core.attributesfile"))
+               return git_config_pathname(&attributes_file, var, value);
+
+       return 0;
+}
+
 static void bootstrap_attr_stack(void)
 {
        if (!attr_stack) {
@@ -472,6 +501,25 @@ static void bootstrap_attr_stack(void)
                elem->prev = attr_stack;
                attr_stack = elem;
 
+               if (git_attr_system()) {
+                       elem = read_attr_from_file(git_etc_gitattributes(), 1);
+                       if (elem) {
+                               elem->origin = NULL;
+                               elem->prev = attr_stack;
+                               attr_stack = elem;
+                       }
+               }
+
+               git_config(git_attr_config, NULL);
+               if (git_attr_global() && attributes_file) {
+                       elem = read_attr_from_file(attributes_file, 1);
+                       if (elem) {
+                               elem->origin = NULL;
+                               elem->prev = attr_stack;
+                               attr_stack = elem;
+                       }
+               }
+
                if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
                        elem = read_attr(GITATTRIBUTES_FILE, 1);
                        elem->origin = strdup("");
@@ -499,7 +547,9 @@ static void prepare_attr_stack(const char *path, int dirlen)
 
        /*
         * At the bottom of the attribute stack is the built-in
-        * set of attribute definitions.  Then, contents from
+        * set of attribute definitions, followed by the contents
+        * of $(prefix)/etc/gitattributes and a file specified by
+        * core.attributesfile.  Then, contents from
         * .gitattribute files from directories closer to the
         * root to the ones in deeper directories are pushed
         * to the stack.  Finally, at the very top of the stack