am: improve author-script error reporting
[gitweb.git] / builtin / am.c
index 2fc2d1e82c5ead598476964329b555e38de9a495..ffca4479d7b230b58d6ed25f3fcd282b2b3994d4 100644 (file)
@@ -32,6 +32,7 @@
 #include "apply.h"
 #include "string-list.h"
 #include "packfile.h"
+#include "repository.h"
 
 /**
  * Returns 1 if the file is empty or does not exist, 0 otherwise.
@@ -269,8 +270,11 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
                struct string_list_item *item;
                char *np;
                char *cp = strchr(buf, '=');
-               if (!cp)
-                       return -1;
+               if (!cp) {
+                       np = strchrnul(buf, '\n');
+                       return error(_("unable to parse '%.*s'"),
+                                    (int) (np - buf), buf);
+               }
                np = strchrnul(cp, '\n');
                *cp++ = '\0';
                item = string_list_append(list, buf);
@@ -279,7 +283,8 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
                *np = '\0';
                cp = sq_dequote(cp);
                if (!cp)
-                       return -1;
+                       return error(_("unable to dequote value of '%s'"),
+                                    item->string);
                item->util = xstrdup(cp);
        }
        return 0;
@@ -307,6 +312,7 @@ static int read_author_script(struct am_state *state)
        struct strbuf buf = STRBUF_INIT;
        struct string_list kv = STRING_LIST_INIT_DUP;
        int retval = -1; /* assume failure */
+       int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
        int fd;
 
        assert(!state->author_name);
@@ -317,21 +323,46 @@ static int read_author_script(struct am_state *state)
        if (fd < 0) {
                if (errno == ENOENT)
                        return 0;
-               die_errno(_("could not open '%s' for reading"), filename);
+               return error_errno(_("could not open '%s' for reading"),
+                                  filename);
        }
        strbuf_read(&buf, fd, 0);
        close(fd);
        if (parse_key_value_squoted(buf.buf, &kv))
                goto finish;
 
-       if (kv.nr != 3 ||
-           strcmp(kv.items[0].string, "GIT_AUTHOR_NAME") ||
-           strcmp(kv.items[1].string, "GIT_AUTHOR_EMAIL") ||
-           strcmp(kv.items[2].string, "GIT_AUTHOR_DATE"))
+       for (i = 0; i < kv.nr; i++) {
+               if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
+                       if (name_i != -2)
+                               name_i = error(_("'GIT_AUTHOR_NAME' already given"));
+                       else
+                               name_i = i;
+               } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
+                       if (email_i != -2)
+                               email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
+                       else
+                               email_i = i;
+               } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
+                       if (date_i != -2)
+                               date_i = error(_("'GIT_AUTHOR_DATE' already given"));
+                       else
+                               date_i = i;
+               } else {
+                       err = error(_("unknown variable '%s'"),
+                                   kv.items[i].string);
+               }
+       }
+       if (name_i == -2)
+               error(_("missing 'GIT_AUTHOR_NAME'"));
+       if (email_i == -2)
+               error(_("missing 'GIT_AUTHOR_EMAIL'"));
+       if (date_i == -2)
+               error(_("missing 'GIT_AUTHOR_DATE'"));
+       if (date_i < 0 || email_i < 0 || date_i < 0 || err)
                goto finish;
-       state->author_name = kv.items[0].util;
-       state->author_email = kv.items[1].util;
-       state->author_date = kv.items[2].util;
+       state->author_name = kv.items[name_i].util;
+       state->author_email = kv.items[email_i].util;
+       state->author_date = kv.items[date_i].util;
        retval = 0;
 finish:
        string_list_clear(&kv, !!retval);
@@ -1243,6 +1274,10 @@ static int parse_mail(struct am_state *state, const char *mail)
        fclose(mi.input);
        fclose(mi.output);
 
+       if (mi.format_flowed)
+               warning(_("Patch sent with format=flowed; "
+                         "space at the end of lines might be lost."));
+
        /* Extract message and author information */
        fp = xfopen(am_path(state, "info"), "r");
        while (!strbuf_getline_lf(&sb, fp)) {
@@ -1400,9 +1435,10 @@ static void write_index_patch(const struct am_state *state)
        FILE *fp;
 
        if (!get_oid_tree("HEAD", &head))
-               tree = lookup_tree(&head);
+               tree = lookup_tree(the_repository, &head);
        else
-               tree = lookup_tree(the_hash_algo->empty_tree);
+               tree = lookup_tree(the_repository,
+                                  the_repository->hash_algo->empty_tree);
 
        fp = xfopen(am_path(state, "patch"), "w");
        init_revisions(&rev_info, NULL);
@@ -1462,7 +1498,7 @@ static int run_apply(const struct am_state *state, const char *index_file)
        int force_apply = 0;
        int options = 0;
 
-       if (init_apply_state(&apply_state, NULL))
+       if (init_apply_state(&apply_state, the_repository, NULL))
                BUG("init_apply_state() failed");
 
        argv_array_push(&apply_opts, "apply");
@@ -1596,6 +1632,7 @@ static int fall_back_threeway(const struct am_state *state, const char *index_pa
        o.branch1 = "HEAD";
        their_tree_name = xstrfmt("%.*s", linelen(state->msg), state->msg);
        o.branch2 = their_tree_name;
+       o.detect_directory_renames = 0;
 
        if (state->quiet)
                o.verbosity = 0;
@@ -1631,7 +1668,8 @@ static void do_commit(const struct am_state *state)
 
        if (!get_oid_commit("HEAD", &parent)) {
                old_oid = &parent;
-               commit_list_insert(lookup_commit(&parent), &parents);
+               commit_list_insert(lookup_commit(the_repository, &parent),
+                                  &parents);
        } else {
                old_oid = NULL;
                say(state, stderr, _("applying to an empty history"));
@@ -1763,7 +1801,7 @@ static void am_run(struct am_state *state, int resume)
 
        refresh_and_write_cache();
 
-       if (index_has_changes(&sb)) {
+       if (index_has_changes(&the_index, NULL, &sb)) {
                write_state_bool(state, "dirtyindex", 1);
                die(_("Dirty index: cannot apply patches (dirty: %s)"), sb.buf);
        }
@@ -1820,22 +1858,19 @@ static void am_run(struct am_state *state, int resume)
                         * Applying the patch to an earlier tree and merging
                         * the result may have produced the same tree as ours.
                         */
-                       if (!apply_status && !index_has_changes(NULL)) {
+                       if (!apply_status &&
+                           !index_has_changes(&the_index, NULL, NULL)) {
                                say(state, stdout, _("No changes -- Patch already applied."));
                                goto next;
                        }
                }
 
                if (apply_status) {
-                       int advice_amworkdir = 1;
-
                        printf_ln(_("Patch failed at %s %.*s"), msgnum(state),
                                linelen(state->msg), state->msg);
 
-                       git_config_get_bool("advice.amworkdir", &advice_amworkdir);
-
                        if (advice_amworkdir)
-                               printf_ln(_("Use 'git am --show-current-patch' to see the failed patch"));
+                               advise(_("Use 'git am --show-current-patch' to see the failed patch"));
 
                        die_user_resolve(state);
                }
@@ -1878,7 +1913,7 @@ static void am_resolve(struct am_state *state)
 
        say(state, stdout, _("Applying: %.*s"), linelen(state->msg), state->msg);
 
-       if (!index_has_changes(NULL)) {
+       if (!index_has_changes(&the_index, NULL, NULL)) {
                printf_ln(_("No changes - did you forget to use 'git add'?\n"
                        "If there is nothing left to stage, chances are that something else\n"
                        "already introduced the same changes; you might want to skip this patch."));
@@ -2077,7 +2112,7 @@ static int safe_to_abort(const struct am_state *state)
        if (get_oid("HEAD", &head))
                oidclr(&head);
 
-       if (!oidcmp(&head, &abort_safety))
+       if (oideq(&head, &abort_safety))
                return 1;
 
        warning(_("You seem to have moved HEAD since the last 'am' failure.\n"