#ifndef TRAILER_H
#define TRAILER_H
-void process_trailers(const char *file, int in_place, int trim_empty,
- struct string_list *trailers);
+#include "list.h"
+
+enum trailer_where {
+ WHERE_DEFAULT,
+ WHERE_END,
+ WHERE_AFTER,
+ WHERE_BEFORE,
+ WHERE_START
+};
+enum trailer_if_exists {
+ EXISTS_DEFAULT,
+ EXISTS_ADD_IF_DIFFERENT_NEIGHBOR,
+ EXISTS_ADD_IF_DIFFERENT,
+ EXISTS_ADD,
+ EXISTS_REPLACE,
+ EXISTS_DO_NOTHING
+};
+enum trailer_if_missing {
+ MISSING_DEFAULT,
+ MISSING_ADD,
+ MISSING_DO_NOTHING
+};
+
+int trailer_set_where(enum trailer_where *item, const char *value);
+int trailer_set_if_exists(enum trailer_if_exists *item, const char *value);
+int trailer_set_if_missing(enum trailer_if_missing *item, const char *value);
+
+struct trailer_info {
+ /*
+ * True if there is a blank line before the location pointed to by
+ * trailer_start.
+ */
+ int blank_line_before_trailer;
+
+ /*
+ * Pointers to the start and end of the trailer block found. If there
+ * is no trailer block found, these 2 pointers point to the end of the
+ * input string.
+ */
+ const char *trailer_start, *trailer_end;
+
+ /*
+ * Array of trailers found.
+ */
+ char **trailers;
+ size_t trailer_nr;
+};
+
+/*
+ * A list that represents newly-added trailers, such as those provided
+ * with the --trailer command line option of git-interpret-trailers.
+ */
+struct new_trailer_item {
+ struct list_head list;
+
+ const char *text;
+
+ enum trailer_where where;
+ enum trailer_if_exists if_exists;
+ enum trailer_if_missing if_missing;
+};
+
+struct process_trailer_options {
+ int in_place;
+ int trim_empty;
+ int only_trailers;
+ int only_input;
+ int unfold;
+};
+
+#define PROCESS_TRAILER_OPTIONS_INIT {0}
+
+void process_trailers(const char *file,
+ const struct process_trailer_options *opts,
+ struct list_head *new_trailer_head);
+
+void trailer_info_get(struct trailer_info *info, const char *str);
+
+void trailer_info_release(struct trailer_info *info);
+
+/*
+ * Format the trailers from the commit msg "msg" into the strbuf "out".
+ * Note two caveats about "opts":
+ *
+ * - this is primarily a helper for pretty.c, and not
+ * all of the flags are supported.
+ *
+ * - this differs from process_trailers slightly in that we always format
+ * only the trailer block itself, even if the "only_trailers" option is not
+ * set.
+ */
+void format_trailers_from_commit(struct strbuf *out, const char *msg,
+ const struct process_trailer_options *opts);
#endif /* TRAILER_H */