In order to demonstrate how to create grep filters for revision walks,
filter the walk performed by cmd_walken() to print only commits which
are authored by someone with a gmail address.
This commit demonstrates how to append a grep pattern to a
rev_info.grep_filter, to teach new contributors how to create their own
more generalized grep filters during revision walks.
Signed-off-by: Emily Shaffer <emilyshaffer@xxxxxxxxxx>
---
builtin/walken.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/builtin/walken.c b/builtin/walken.c
index 335dcb6b21..da2d197914 100644
--- a/builtin/walken.c
+++ b/builtin/walken.c
@@ -11,6 +11,7 @@
#include "parse-options.h"
#include "pretty.h"
#include "line-log.h"
+#include "grep.h"
/*
* All builtins are expected to provide a usage to provide a consistent user
@@ -28,10 +29,8 @@ const char * const walken_usage[] = {
*/
static void init_walken_defaults(void)
{
- /*
- * We don't use any other components or have settings to initialize, so
- * leave this empty.
- */
+ /* Needed by our grep filter. */
+ init_grep_defaults(the_repository);
}
/*
@@ -60,6 +59,10 @@ static void final_rev_info_setup(int argc, const char **argv, const char *prefix
* setup_revisions(argc, argv, rev, &opt);
*/
+ /* Add a grep pattern to the author line in the header. */
+ append_header_grep_pattern(&rev->grep_filter, GREP_HEADER_AUTHOR, "gmail");
+ compile_grep_patterns(&rev->grep_filter);
+
/* Let's force oneline format. */
get_commit_format("oneline", rev);
rev->verbose_header = 1;
@@ -86,10 +89,7 @@ static void final_rev_info_setup(int argc, const char **argv, const char *prefix
*/
static int git_walken_config(const char *var, const char *value, void *cb)
{
- /*
- * For now, we don't have any custom configuration, so fall back on the
- * default config.
- */
+ grep_config(var, value, cb);
return git_default_config(var, value, cb);
}
--
2.22.0.410.gd8fdbe21b5-goog
