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-rw-r--r--rebase-interactive.c146
1 files changed, 122 insertions, 24 deletions
diff --git a/rebase-interactive.c b/rebase-interactive.c
index 68aff1d..aa18ae8 100644
--- a/rebase-interactive.c
+++ b/rebase-interactive.c
@@ -1,10 +1,35 @@
#include "cache.h"
#include "commit.h"
-#include "rebase-interactive.h"
#include "sequencer.h"
+#include "rebase-interactive.h"
#include "strbuf.h"
+#include "commit-slab.h"
+#include "config.h"
+
+enum missing_commit_check_level {
+ MISSING_COMMIT_CHECK_IGNORE = 0,
+ MISSING_COMMIT_CHECK_WARN,
+ MISSING_COMMIT_CHECK_ERROR
+};
+
+static enum missing_commit_check_level get_missing_commit_check_level(void)
+{
+ const char *value;
+
+ if (git_config_get_value("rebase.missingcommitscheck", &value) ||
+ !strcasecmp("ignore", value))
+ return MISSING_COMMIT_CHECK_IGNORE;
+ if (!strcasecmp("warn", value))
+ return MISSING_COMMIT_CHECK_WARN;
+ if (!strcasecmp("error", value))
+ return MISSING_COMMIT_CHECK_ERROR;
+ warning(_("unrecognized setting %s for option "
+ "rebase.missingCommitsCheck. Ignoring."), value);
+ return MISSING_COMMIT_CHECK_IGNORE;
+}
-void append_todo_help(unsigned edit_todo, unsigned keep_empty,
+void append_todo_help(unsigned keep_empty, int command_count,
+ const char *shortrevisions, const char *shortonto,
struct strbuf *buf)
{
const char *msg = _("\nCommands:\n"
@@ -24,6 +49,15 @@ void append_todo_help(unsigned edit_todo, unsigned keep_empty,
". specified). Use -c <commit> to reword the commit message.\n"
"\n"
"These lines can be re-ordered; they are executed from top to bottom.\n");
+ unsigned edit_todo = !(shortrevisions && shortonto);
+
+ if (!edit_todo) {
+ strbuf_addch(buf, '\n');
+ strbuf_commented_addf(buf, Q_("Rebase %s onto %s (%d command)",
+ "Rebase %s onto %s (%d commands)",
+ command_count),
+ shortrevisions, shortonto, command_count);
+ }
strbuf_add_commented_lines(buf, msg, strlen(msg));
@@ -53,39 +87,103 @@ void append_todo_help(unsigned edit_todo, unsigned keep_empty,
}
}
-int edit_todo_list(struct repository *r, unsigned flags)
+int edit_todo_list(struct repository *r, struct todo_list *todo_list,
+ struct todo_list *new_todo, const char *shortrevisions,
+ const char *shortonto, unsigned flags)
{
- struct strbuf buf = STRBUF_INIT;
const char *todo_file = rebase_path_todo();
+ unsigned initial = shortrevisions && shortonto;
- if (strbuf_read_file(&buf, todo_file, 0) < 0)
- return error_errno(_("could not read '%s'."), todo_file);
+ /* If the user is editing the todo list, we first try to parse
+ * it. If there is an error, we do not return, because the user
+ * might want to fix it in the first place. */
+ if (!initial)
+ todo_list_parse_insn_buffer(r, todo_list->buf.buf, todo_list);
- strbuf_stripspace(&buf, 1);
- if (write_message(buf.buf, buf.len, todo_file, 0)) {
- strbuf_release(&buf);
- return -1;
- }
+ if (todo_list_write_to_file(r, todo_list, todo_file, shortrevisions, shortonto,
+ -1, flags | TODO_LIST_SHORTEN_IDS | TODO_LIST_APPEND_TODO_HELP))
+ return error_errno(_("could not write '%s'"), todo_file);
+
+ if (initial && copy_file(rebase_path_todo_backup(), todo_file, 0666))
+ return error(_("could not copy '%s' to '%s'."), todo_file,
+ rebase_path_todo_backup());
- strbuf_release(&buf);
+ if (launch_sequence_editor(todo_file, &new_todo->buf, NULL))
+ return -2;
- transform_todos(r, flags | TODO_LIST_SHORTEN_IDS);
+ strbuf_stripspace(&new_todo->buf, 1);
+ if (initial && new_todo->buf.len == 0)
+ return -3;
- if (strbuf_read_file(&buf, todo_file, 0) < 0)
- return error_errno(_("could not read '%s'."), todo_file);
+ /* For the initial edit, the todo list gets parsed in
+ * complete_action(). */
+ if (!initial)
+ return todo_list_parse_insn_buffer(r, new_todo->buf.buf, new_todo);
- append_todo_help(1, 0, &buf);
- if (write_message(buf.buf, buf.len, todo_file, 0)) {
- strbuf_release(&buf);
- return -1;
+ return 0;
+}
+
+define_commit_slab(commit_seen, unsigned char);
+/*
+ * Check if the user dropped some commits by mistake
+ * Behaviour determined by rebase.missingCommitsCheck.
+ * Check if there is an unrecognized command or a
+ * bad SHA-1 in a command.
+ */
+int todo_list_check(struct todo_list *old_todo, struct todo_list *new_todo)
+{
+ enum missing_commit_check_level check_level = get_missing_commit_check_level();
+ struct strbuf missing = STRBUF_INIT;
+ int res = 0, i;
+ struct commit_seen commit_seen;
+
+ init_commit_seen(&commit_seen);
+
+ if (check_level == MISSING_COMMIT_CHECK_IGNORE)
+ goto leave_check;
+
+ /* Mark the commits in git-rebase-todo as seen */
+ for (i = 0; i < new_todo->nr; i++) {
+ struct commit *commit = new_todo->items[i].commit;
+ if (commit)
+ *commit_seen_at(&commit_seen, commit) = 1;
}
- strbuf_release(&buf);
+ /* Find commits in git-rebase-todo.backup yet unseen */
+ for (i = old_todo->nr - 1; i >= 0; i--) {
+ struct todo_item *item = old_todo->items + i;
+ struct commit *commit = item->commit;
+ if (commit && !*commit_seen_at(&commit_seen, commit)) {
+ strbuf_addf(&missing, " - %s %.*s\n",
+ find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV),
+ item->arg_len,
+ todo_item_get_arg(old_todo, item));
+ *commit_seen_at(&commit_seen, commit) = 1;
+ }
+ }
- if (launch_sequence_editor(todo_file, NULL, NULL))
- return -1;
+ /* Warn about missing commits */
+ if (!missing.len)
+ goto leave_check;
- transform_todos(r, flags & ~(TODO_LIST_SHORTEN_IDS));
+ if (check_level == MISSING_COMMIT_CHECK_ERROR)
+ res = 1;
- return 0;
+ fprintf(stderr,
+ _("Warning: some commits may have been dropped accidentally.\n"
+ "Dropped commits (newer to older):\n"));
+
+ /* Make the list user-friendly and display */
+ fputs(missing.buf, stderr);
+ strbuf_release(&missing);
+
+ fprintf(stderr, _("To avoid this message, use \"drop\" to "
+ "explicitly remove a commit.\n\n"
+ "Use 'git config rebase.missingCommitsCheck' to change "
+ "the level of warnings.\n"
+ "The possible behaviours are: ignore, warn, error.\n\n"));
+
+leave_check:
+ clear_commit_seen(&commit_seen);
+ return res;
}