path: root/builtin/blame.c
diff options
authorJeff King <>2015-06-25 16:55:02 (GMT)
committerJunio C Hamano <>2015-06-29 18:39:07 (GMT)
commita5481a6c9438cbd9c246cfa59ff49c31a0926fb6 (patch)
tree7992773f5ae1687c910e602b6286f3f1cbe116aa /builtin/blame.c
parentb7c1e11dc43e3dbd9eb2da20476c4c55dda5e84b (diff)
convert "enum date_mode" into a struct
In preparation for adding date modes that may carry extra information beyond the mode itself, this patch converts the date_mode enum into a struct. Most of the conversion is fairly straightforward; we pass the struct as a pointer and dereference the type field where necessary. Locations that declare a date_mode can use a "{}" constructor. However, the tricky case is where we use the enum labels as constants, like: show_date(t, tz, DATE_NORMAL); Ideally we could say: show_date(t, tz, &{ DATE_NORMAL }); but of course C does not allow that. Likewise, we cannot cast the constant to a struct, because we need to pass an actual address. Our options are basically: 1. Manually add a "struct date_mode d = { DATE_NORMAL }" definition to each caller, and pass "&d". This makes the callers uglier, because they sometimes do not even have their own scope (e.g., they are inside a switch statement). 2. Provide a pre-made global "date_normal" struct that can be passed by address. We'd also need "date_rfc2822", "date_iso8601", and so forth. But at least the ugliness is defined in one place. 3. Provide a wrapper that generates the correct struct on the fly. The big downside is that we end up pointing to a single global, which makes our wrapper non-reentrant. But show_date is already not reentrant, so it does not matter. This patch implements 3, along with a minor macro to keep the size of the callers sane. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'builtin/blame.c')
1 files changed, 5 insertions, 5 deletions
diff --git a/builtin/blame.c b/builtin/blame.c
index a22ac17..474da66 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -50,7 +50,7 @@ static int xdl_opts;
static int abbrev = -1;
static int no_whole_file_rename;
-static enum date_mode blame_date_mode = DATE_ISO8601;
+static struct date_mode blame_date_mode = { DATE_ISO8601 };
static size_t blame_date_width;
static struct string_list mailmap;
@@ -1827,7 +1827,7 @@ static const char *format_time(unsigned long time, const char *tz_str,
size_t time_width;
int tz;
tz = atoi(tz_str);
- time_str = show_date(time, tz, blame_date_mode);
+ time_str = show_date(time, tz, &blame_date_mode);
strbuf_addstr(&time_buf, time_str);
* Add space paddings to time_buf to display a fixed width
@@ -2187,7 +2187,7 @@ static int git_blame_config(const char *var, const char *value, void *cb)
if (!strcmp(var, "")) {
if (!value)
return config_error_nonbool(var);
- blame_date_mode = parse_date_format(value);
+ parse_date_format(value, &blame_date_mode);
return 0;
@@ -2569,13 +2569,13 @@ parse_done:
if (cmd_is_annotate) {
output_option |= OUTPUT_ANNOTATE_COMPAT;
- blame_date_mode = DATE_ISO8601;
+ blame_date_mode.type = DATE_ISO8601;
} else {
blame_date_mode = revs.date_mode;
/* The maximum width used to show the dates */
- switch (blame_date_mode) {
+ switch (blame_date_mode.type) {
case DATE_RFC2822:
blame_date_width = sizeof("Thu, 19 Oct 2006 16:00:04 -0700");