This patch implements reading the configuration
to get trailer information, and then processing
it and storing it in a doubly linked list.
The config information is stored in the list
whose first item is pointed to by:
static struct trailer_item *first_conf_item;
Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
---
trailer.c | 134 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 134 insertions(+)
diff --git a/trailer.c b/trailer.c
index 52108c2..7a6d35d 100644
--- a/trailer.c
+++ b/trailer.c
@@ -25,6 +25,8 @@ struct trailer_item {
struct conf_info conf;
};
+static struct trailer_item *first_conf_item;
+
static int same_token(struct trailer_item *a, struct trailer_item *b, int alnum_len)
{
return !strncasecmp(a->token, b->token, alnum_len);
@@ -245,3 +247,135 @@ static void process_trailers_lists(struct trailer_item **in_tok_first,
apply_arg_if_missing(in_tok_first, in_tok_last, arg_tok);
}
}
+
+static int set_where(struct conf_info *item, const char *value)
+{
+ if (!strcasecmp("after", value))
+ item->where = WHERE_AFTER;
+ else if (!strcasecmp("before", value))
+ item->where = WHERE_BEFORE;
+ else
+ return 1;
+ return 0;
+}
+
+static int set_if_exists(struct conf_info *item, const char *value)
+{
+ if (!strcasecmp("addIfDifferent", value))
+ item->if_exists = EXISTS_ADD_IF_DIFFERENT;
+ else if (!strcasecmp("addIfDifferentNeighbor", value))
+ item->if_exists = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR;
+ else if (!strcasecmp("add", value))
+ item->if_exists = EXISTS_ADD;
+ else if (!strcasecmp("overwrite", value))
+ item->if_exists = EXISTS_OVERWRITE;
+ else if (!strcasecmp("doNothing", value))
+ item->if_exists = EXISTS_DO_NOTHING;
+ else
+ return 1;
+ return 0;
+}
+
+static int set_if_missing(struct conf_info *item, const char *value)
+{
+ if (!strcasecmp("doNothing", value))
+ item->if_missing = MISSING_DO_NOTHING;
+ else if (!strcasecmp("add", value))
+ item->if_missing = MISSING_ADD;
+ else
+ return 1;
+ return 0;
+}
+
+enum trailer_info_type { TRAILER_KEY, TRAILER_COMMAND, TRAILER_WHERE,
+ TRAILER_IF_EXISTS, TRAILER_IF_MISSING };
+
+static int set_name_and_type(const char *conf_key, const char *suffix,
+ enum trailer_info_type type,
+ char **pname, enum trailer_info_type *ptype)
+{
+ int ret = ends_with(conf_key, suffix);
+ if (ret) {
+ *pname = xstrndup(conf_key, strlen(conf_key) - strlen(suffix));
+ *ptype = type;
+ }
+ return ret;
+}
+
+static struct trailer_item *get_conf_item(const char *name)
+{
+ struct trailer_item *item;
+ struct trailer_item *previous;
+
+ /* Look up item with same name */
+ for (previous = NULL, item = first_conf_item;
+ item;
+ previous = item, item = item->next) {
+ if (!strcasecmp(item->conf.name, name))
+ return item;
+ }
+
+ /* Item does not already exists, create it */
+ item = xcalloc(sizeof(struct trailer_item), 1);
+ item->conf.name = xstrdup(name);
+
+ if (!previous)
+ first_conf_item = item;
+ else {
+ previous->next = item;
+ item->previous = previous;
+ }
+
+ return item;
+}
+
+static int git_trailer_config(const char *conf_key, const char *value, void *cb)
+{
+ if (starts_with(conf_key, "trailer.")) {
+ const char *orig_conf_key = conf_key;
+ struct trailer_item *item;
+ struct conf_info *conf;
+ char *name;
+ enum trailer_info_type type;
+
+ conf_key += 8;
+ if (!set_name_and_type(conf_key, ".key", TRAILER_KEY, &name, &type) &&
+ !set_name_and_type(conf_key, ".command", TRAILER_COMMAND, &name, &type) &&
+ !set_name_and_type(conf_key, ".where", TRAILER_WHERE, &name, &type) &&
+ !set_name_and_type(conf_key, ".ifexists", TRAILER_IF_EXISTS, &name, &type) &&
+ !set_name_and_type(conf_key, ".ifmissing", TRAILER_IF_MISSING, &name, &type))
+ return 0;
+
+ item = get_conf_item(name);
+ conf = &item->conf;
+ free(name);
+
+ switch (type) {
+ case TRAILER_KEY:
+ if (conf->key)
+ warning(_("more than one %s"), orig_conf_key);
+ conf->key = xstrdup(value);
+ break;
+ case TRAILER_COMMAND:
+ if (conf->command)
+ warning(_("more than one %s"), orig_conf_key);
+ conf->command = xstrdup(value);
+ break;
+ case TRAILER_WHERE:
+ if (set_where(conf, value))
+ warning(_("unknown value '%s' for key '%s'"), value, orig_conf_key);
+ break;
+ case TRAILER_IF_EXISTS:
+ if (set_if_exists(conf, value))
+ warning(_("unknown value '%s' for key '%s'"), value, orig_conf_key);
+ break;
+ case TRAILER_IF_MISSING:
+ if (set_if_missing(conf, value))
+ warning(_("unknown value '%s' for key '%s'"), value, orig_conf_key);
+ break;
+ default:
+ die("internal bug in trailer.c");
+ }
+ }
+ return 0;
+}
--
1.8.5.2.204.gcfe299d.dirty
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