Update draft release notes to 1.8.5
[gitweb.git] / builtin / rm.c
index b384c4c3cfe973346b5b295416f3883ae2d73c94..3a0e0eaab7d1fd8a298bb2519776abede5c685e2 100644 (file)
@@ -9,6 +9,9 @@
 #include "cache-tree.h"
 #include "tree-walk.h"
 #include "parse-options.h"
+#include "string-list.h"
+#include "submodule.h"
+#include "pathspec.h"
 
 static const char * const builtin_rm_usage[] = {
        N_("git rm [options] [--] <file>..."),
@@ -17,9 +20,94 @@ static const char * const builtin_rm_usage[] = {
 
 static struct {
        int nr, alloc;
-       const char **name;
+       struct {
+               const char *name;
+               char is_submodule;
+       } *entry;
 } list;
 
+static int get_ours_cache_pos(const char *path, int pos)
+{
+       int i = -pos - 1;
+
+       while ((i < active_nr) && !strcmp(active_cache[i]->name, path)) {
+               if (ce_stage(active_cache[i]) == 2)
+                       return i;
+               i++;
+       }
+       return -1;
+}
+
+static void print_error_files(struct string_list *files_list,
+                             const char *main_msg,
+                             const char *hints_msg,
+                             int *errs)
+{
+       if (files_list->nr) {
+               int i;
+               struct strbuf err_msg = STRBUF_INIT;
+
+               strbuf_addstr(&err_msg, main_msg);
+               for (i = 0; i < files_list->nr; i++)
+                       strbuf_addf(&err_msg,
+                                   "\n    %s",
+                                   files_list->items[i].string);
+               if (advice_rm_hints)
+                       strbuf_addstr(&err_msg, hints_msg);
+               *errs = error("%s", err_msg.buf);
+               strbuf_release(&err_msg);
+       }
+}
+
+static void error_removing_concrete_submodules(struct string_list *files, int *errs)
+{
+       print_error_files(files,
+                         Q_("the following submodule (or one of its nested "
+                            "submodules)\n"
+                            "uses a .git directory:",
+                            "the following submodules (or one of its nested "
+                            "submodules)\n"
+                            "use a .git directory:", files->nr),
+                         _("\n(use 'rm -rf' if you really want to remove "
+                           "it including all of its history)"),
+                         errs);
+       string_list_clear(files, 0);
+}
+
+static int check_submodules_use_gitfiles(void)
+{
+       int i;
+       int errs = 0;
+       struct string_list files = STRING_LIST_INIT_NODUP;
+
+       for (i = 0; i < list.nr; i++) {
+               const char *name = list.entry[i].name;
+               int pos;
+               const struct cache_entry *ce;
+               struct stat st;
+
+               pos = cache_name_pos(name, strlen(name));
+               if (pos < 0) {
+                       pos = get_ours_cache_pos(name, pos);
+                       if (pos < 0)
+                               continue;
+               }
+               ce = active_cache[pos];
+
+               if (!S_ISGITLINK(ce->ce_mode) ||
+                   (lstat(ce->name, &st) < 0) ||
+                   is_empty_dir(name))
+                       continue;
+
+               if (!submodule_uses_gitfile(name))
+                       string_list_append(&files, name);
+       }
+
+       error_removing_concrete_submodules(&files, &errs);
+
+       return errs;
+}
+
 static int check_local_mod(unsigned char *head, int index_only)
 {
        /*
@@ -31,25 +119,40 @@ static int check_local_mod(unsigned char *head, int index_only)
         */
        int i, no_head;
        int errs = 0;
+       struct string_list files_staged = STRING_LIST_INIT_NODUP;
+       struct string_list files_cached = STRING_LIST_INIT_NODUP;
+       struct string_list files_submodule = STRING_LIST_INIT_NODUP;
+       struct string_list files_local = STRING_LIST_INIT_NODUP;
 
        no_head = is_null_sha1(head);
        for (i = 0; i < list.nr; i++) {
                struct stat st;
                int pos;
-               struct cache_entry *ce;
-               const char *name = list.name[i];
+               const struct cache_entry *ce;
+               const char *name = list.entry[i].name;
                unsigned char sha1[20];
                unsigned mode;
                int local_changes = 0;
                int staged_changes = 0;
 
                pos = cache_name_pos(name, strlen(name));
-               if (pos < 0)
-                       continue; /* removing unmerged entry */
+               if (pos < 0) {
+                       /*
+                        * Skip unmerged entries except for populated submodules
+                        * that could lose history when removed.
+                        */
+                       pos = get_ours_cache_pos(name, pos);
+                       if (pos < 0)
+                               continue;
+
+                       if (!S_ISGITLINK(active_cache[pos]->ce_mode) ||
+                           is_empty_dir(name))
+                               continue;
+               }
                ce = active_cache[pos];
 
                if (lstat(ce->name, &st) < 0) {
-                       if (errno != ENOENT)
+                       if (errno != ENOENT && errno != ENOTDIR)
                                warning("'%s': %s", ce->name, strerror(errno));
                        /* It already vanished from the working tree */
                        continue;
@@ -58,9 +161,10 @@ static int check_local_mod(unsigned char *head, int index_only)
                        /* if a file was removed and it is now a
                         * directory, that is the same as ENOENT as
                         * far as git is concerned; we do not track
-                        * directories.
+                        * directories unless they are submodules.
                         */
-                       continue;
+                       if (!S_ISGITLINK(ce->ce_mode))
+                               continue;
                }
 
                /*
@@ -80,8 +184,11 @@ static int check_local_mod(unsigned char *head, int index_only)
 
                /*
                 * Is the index different from the file in the work tree?
+                * If it's a submodule, is its work tree modified?
                 */
-               if (ce_match_stat(ce, &st, 0))
+               if (ce_match_stat(ce, &st, 0) ||
+                   (S_ISGITLINK(ce->ce_mode) &&
+                    !ok_to_remove_submodule(ce->name)))
                        local_changes = 1;
 
                /*
@@ -106,21 +213,50 @@ static int check_local_mod(unsigned char *head, int index_only)
                 */
                if (local_changes && staged_changes) {
                        if (!index_only || !(ce->ce_flags & CE_INTENT_TO_ADD))
-                               errs = error(_("'%s' has staged content different "
-                                            "from both the file and the HEAD\n"
-                                            "(use -f to force removal)"), name);
+                               string_list_append(&files_staged, name);
                }
                else if (!index_only) {
                        if (staged_changes)
-                               errs = error(_("'%s' has changes staged in the index\n"
-                                            "(use --cached to keep the file, "
-                                            "or -f to force removal)"), name);
-                       if (local_changes)
-                               errs = error(_("'%s' has local modifications\n"
-                                            "(use --cached to keep the file, "
-                                            "or -f to force removal)"), name);
+                               string_list_append(&files_cached, name);
+                       if (local_changes) {
+                               if (S_ISGITLINK(ce->ce_mode) &&
+                                   !submodule_uses_gitfile(name))
+                                       string_list_append(&files_submodule, name);
+                               else
+                                       string_list_append(&files_local, name);
+                       }
                }
        }
+       print_error_files(&files_staged,
+                         Q_("the following file has staged content different "
+                            "from both the\nfile and the HEAD:",
+                            "the following files have staged content different"
+                            " from both the\nfile and the HEAD:",
+                            files_staged.nr),
+                         _("\n(use -f to force removal)"),
+                         &errs);
+       string_list_clear(&files_staged, 0);
+       print_error_files(&files_cached,
+                         Q_("the following file has changes "
+                            "staged in the index:",
+                            "the following files have changes "
+                            "staged in the index:", files_cached.nr),
+                         _("\n(use --cached to keep the file,"
+                           " or -f to force removal)"),
+                         &errs);
+       string_list_clear(&files_cached, 0);
+
+       error_removing_concrete_submodules(&files_submodule, &errs);
+
+       print_error_files(&files_local,
+                         Q_("the following file has local modifications:",
+                            "the following files have local modifications:",
+                            files_local.nr),
+                         _("\n(use --cached to keep the file,"
+                           " or -f to force removal)"),
+                         &errs);
+       string_list_clear(&files_local, 0);
+
        return errs;
 }
 
@@ -132,10 +268,10 @@ static int ignore_unmatch = 0;
 static struct option builtin_rm_options[] = {
        OPT__DRY_RUN(&show_only, N_("dry run")),
        OPT__QUIET(&quiet, N_("do not list removed files")),
-       OPT_BOOLEAN( 0 , "cached",         &index_only, N_("only remove from the index")),
+       OPT_BOOL( 0 , "cached",         &index_only, N_("only remove from the index")),
        OPT__FORCE(&force, N_("override the up-to-date check")),
-       OPT_BOOLEAN('r', NULL,             &recursive,  N_("allow recursive removal")),
-       OPT_BOOLEAN( 0 , "ignore-unmatch", &ignore_unmatch,
+       OPT_BOOL('r', NULL,             &recursive,  N_("allow recursive removal")),
+       OPT_BOOL( 0 , "ignore-unmatch", &ignore_unmatch,
                                N_("exit with a zero status even if nothing matched")),
        OPT_END(),
 };
@@ -143,9 +279,10 @@ static struct option builtin_rm_options[] = {
 int cmd_rm(int argc, const char **argv, const char *prefix)
 {
        int i, newfd;
-       const char **pathspec;
+       struct pathspec pathspec;
        char *seen;
 
+       gitmodules_config();
        git_config(git_default_config, NULL);
 
        argc = parse_options(argc, argv, prefix, builtin_rm_options,
@@ -161,30 +298,35 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
        if (read_cache() < 0)
                die(_("index file corrupt"));
 
-       pathspec = get_pathspec(prefix, argv);
-       refresh_index(&the_index, REFRESH_QUIET, pathspec, NULL, NULL);
+       parse_pathspec(&pathspec, 0,
+                      PATHSPEC_PREFER_CWD |
+                      PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
+                      prefix, argv);
+       refresh_index(&the_index, REFRESH_QUIET, &pathspec, NULL, NULL);
 
-       seen = NULL;
-       for (i = 0; pathspec[i] ; i++)
-               /* nothing */;
-       seen = xcalloc(i, 1);
+       seen = xcalloc(pathspec.nr, 1);
 
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
-               if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
+               const struct cache_entry *ce = active_cache[i];
+               if (!match_pathspec_depth(&pathspec, ce->name, ce_namelen(ce), 0, seen))
                        continue;
-               ALLOC_GROW(list.name, list.nr + 1, list.alloc);
-               list.name[list.nr++] = ce->name;
+               ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
+               list.entry[list.nr].name = ce->name;
+               list.entry[list.nr].is_submodule = S_ISGITLINK(ce->ce_mode);
+               if (list.entry[list.nr++].is_submodule &&
+                   !is_staging_gitmodules_ok())
+                       die (_("Please, stage your changes to .gitmodules or stash them to proceed"));
        }
 
-       if (pathspec) {
-               const char *match;
+       if (pathspec.nr) {
+               const char *original;
                int seen_any = 0;
-               for (i = 0; (match = pathspec[i]) != NULL ; i++) {
+               for (i = 0; i < pathspec.nr; i++) {
+                       original = pathspec.items[i].original;
                        if (!seen[i]) {
                                if (!ignore_unmatch) {
                                        die(_("pathspec '%s' did not match any files"),
-                                           match);
+                                           original);
                                }
                        }
                        else {
@@ -192,10 +334,10 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
                        }
                        if (!recursive && seen[i] == MATCHED_RECURSIVELY)
                                die(_("not removing '%s' recursively without -r"),
-                                   *match ? match : ".");
+                                   *original ? original : ".");
                }
 
-               if (! seen_any)
+               if (!seen_any)
                        exit(0);
        }
 
@@ -215,6 +357,9 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
                        hashclr(sha1);
                if (check_local_mod(sha1, index_only))
                        exit(1);
+       } else if (!index_only) {
+               if (check_submodules_use_gitfiles())
+                       exit(1);
        }
 
        /*
@@ -222,7 +367,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
         * the index unless all of them succeed.
         */
        for (i = 0; i < list.nr; i++) {
-               const char *path = list.name[i];
+               const char *path = list.entry[i].name;
                if (!quiet)
                        printf("rm '%s'\n", path);
 
@@ -242,9 +387,34 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
         * in the middle)
         */
        if (!index_only) {
-               int removed = 0;
+               int removed = 0, gitmodules_modified = 0;
                for (i = 0; i < list.nr; i++) {
-                       const char *path = list.name[i];
+                       const char *path = list.entry[i].name;
+                       if (list.entry[i].is_submodule) {
+                               if (is_empty_dir(path)) {
+                                       if (!rmdir(path)) {
+                                               removed = 1;
+                                               if (!remove_path_from_gitmodules(path))
+                                                       gitmodules_modified = 1;
+                                               continue;
+                                       }
+                               } else {
+                                       struct strbuf buf = STRBUF_INIT;
+                                       strbuf_addstr(&buf, path);
+                                       if (!remove_dir_recursively(&buf, 0)) {
+                                               removed = 1;
+                                               if (!remove_path_from_gitmodules(path))
+                                                       gitmodules_modified = 1;
+                                               strbuf_release(&buf);
+                                               continue;
+                                       } else if (!file_exists(path))
+                                               /* Submodule was removed by user */
+                                               if (!remove_path_from_gitmodules(path))
+                                                       gitmodules_modified = 1;
+                                       strbuf_release(&buf);
+                                       /* Fallthrough and let remove_path() fail. */
+                               }
+                       }
                        if (!remove_path(path)) {
                                removed = 1;
                                continue;
@@ -252,6 +422,8 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
                        if (!removed)
                                die_errno("git rm: '%s'", path);
                }
+               if (gitmodules_modified)
+                       stage_updated_gitmodules();
        }
 
        if (active_cache_changed) {