wt-status: begin error messages with lower-case
[gitweb.git] / wt-status.c
index dd0a1ab2644cb93d81c52dcf0b0618f5918b5125..7dbd1e1c926b96a94cb74bd8fbbaa2171b10743f 100644 (file)
@@ -16,6 +16,7 @@
 #include "strbuf.h"
 #include "utf8.h"
 #include "worktree.h"
+#include "lockfile.h"
 
 static const char cut_line[] =
 "------------------------ >8 ------------------------\n";
@@ -263,7 +264,7 @@ static const char *wt_status_unmerged_status_string(int stagemask)
        case 7:
                return _("both modified:");
        default:
-               die("bug: unhandled unmerged status %x", stagemask);
+               die("BUG: unhandled unmerged status %x", stagemask);
        }
 }
 
@@ -388,7 +389,7 @@ static void wt_longstatus_print_change_data(struct wt_status *s,
        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
        what = wt_status_diff_status_string(status);
        if (!what)
-               die("bug: unhandled diff status %c", status);
+               die("BUG: unhandled diff status %c", status);
        len = label_width - utf8_strwidth(what);
        assert(len >= 0);
        if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
@@ -1005,9 +1006,12 @@ static void show_merge_in_progress(struct wt_status *s,
 {
        if (has_unmerged(s)) {
                status_printf_ln(s, color, _("You have unmerged paths."));
-               if (s->hints)
+               if (s->hints) {
+                       status_printf_ln(s, color,
+                                        _("  (fix conflicts and run \"git commit\")"));
                        status_printf_ln(s, color,
-                               _("  (fix conflicts and run \"git commit\")"));
+                                        _("  (use \"git merge --abort\" to abort the merge)"));
+               }
        } else {
                s-> commitable = 1;
                status_printf_ln(s, color,
@@ -1812,6 +1816,379 @@ static void wt_porcelain_print(struct wt_status *s)
        wt_shortstatus_print(s);
 }
 
+/*
+ * Print branch information for porcelain v2 output.  These lines
+ * are printed when the '--branch' parameter is given.
+ *
+ *    # branch.oid <commit><eol>
+ *    # branch.head <head><eol>
+ *   [# branch.upstream <upstream><eol>
+ *   [# branch.ab +<ahead> -<behind><eol>]]
+ *
+ *      <commit> ::= the current commit hash or the the literal
+ *                   "(initial)" to indicate an initialized repo
+ *                   with no commits.
+ *
+ *        <head> ::= <branch_name> the current branch name or
+ *                   "(detached)" literal when detached head or
+ *                   "(unknown)" when something is wrong.
+ *
+ *    <upstream> ::= the upstream branch name, when set.
+ *
+ *       <ahead> ::= integer ahead value, when upstream set
+ *                   and the commit is present (not gone).
+ *
+ *      <behind> ::= integer behind value, when upstream set
+ *                   and commit is present.
+ *
+ *
+ * The end-of-line is defined by the -z flag.
+ *
+ *                 <eol> ::= NUL when -z,
+ *                           LF when NOT -z.
+ *
+ */
+static void wt_porcelain_v2_print_tracking(struct wt_status *s)
+{
+       struct branch *branch;
+       const char *base;
+       const char *branch_name;
+       struct wt_status_state state;
+       int ab_info, nr_ahead, nr_behind;
+       char eol = s->null_termination ? '\0' : '\n';
+
+       memset(&state, 0, sizeof(state));
+       wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
+
+       fprintf(s->fp, "# branch.oid %s%c",
+                       (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
+                       eol);
+
+       if (!s->branch)
+               fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
+       else {
+               if (!strcmp(s->branch, "HEAD")) {
+                       fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
+
+                       if (state.rebase_in_progress || state.rebase_interactive_in_progress)
+                               branch_name = state.onto;
+                       else if (state.detached_from)
+                               branch_name = state.detached_from;
+                       else
+                               branch_name = "";
+               } else {
+                       branch_name = NULL;
+                       skip_prefix(s->branch, "refs/heads/", &branch_name);
+
+                       fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
+               }
+
+               /* Lookup stats on the upstream tracking branch, if set. */
+               branch = branch_get(branch_name);
+               base = NULL;
+               ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind, &base) == 0);
+               if (base) {
+                       base = shorten_unambiguous_ref(base, 0);
+                       fprintf(s->fp, "# branch.upstream %s%c", base, eol);
+                       free((char *)base);
+
+                       if (ab_info)
+                               fprintf(s->fp, "# branch.ab +%d -%d%c", nr_ahead, nr_behind, eol);
+               }
+       }
+
+       free(state.branch);
+       free(state.onto);
+       free(state.detached_from);
+}
+
+/*
+ * Convert various submodule status values into a
+ * fixed-length string of characters in the buffer provided.
+ */
+static void wt_porcelain_v2_submodule_state(
+       struct wt_status_change_data *d,
+       char sub[5])
+{
+       if (S_ISGITLINK(d->mode_head) ||
+               S_ISGITLINK(d->mode_index) ||
+               S_ISGITLINK(d->mode_worktree)) {
+               sub[0] = 'S';
+               sub[1] = d->new_submodule_commits ? 'C' : '.';
+               sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
+               sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
+       } else {
+               sub[0] = 'N';
+               sub[1] = '.';
+               sub[2] = '.';
+               sub[3] = '.';
+       }
+       sub[4] = 0;
+}
+
+/*
+ * Fix-up changed entries before we print them.
+ */
+static void wt_porcelain_v2_fix_up_changed(
+       struct string_list_item *it,
+       struct wt_status *s)
+{
+       struct wt_status_change_data *d = it->util;
+
+       if (!d->index_status) {
+               /*
+                * This entry is unchanged in the index (relative to the head).
+                * Therefore, the collect_updated_cb was never called for this
+                * entry (during the head-vs-index scan) and so the head column
+                * fields were never set.
+                *
+                * We must have data for the index column (from the
+                * index-vs-worktree scan (otherwise, this entry should not be
+                * in the list of changes)).
+                *
+                * Copy index column fields to the head column, so that our
+                * output looks complete.
+                */
+               assert(d->mode_head == 0);
+               d->mode_head = d->mode_index;
+               oidcpy(&d->oid_head, &d->oid_index);
+       }
+
+       if (!d->worktree_status) {
+               /*
+                * This entry is unchanged in the worktree (relative to the index).
+                * Therefore, the collect_changed_cb was never called for this entry
+                * (during the index-vs-worktree scan) and so the worktree column
+                * fields were never set.
+                *
+                * We must have data for the index column (from the head-vs-index
+                * scan).
+                *
+                * Copy the index column fields to the worktree column so that
+                * our output looks complete.
+                *
+                * Note that we only have a mode field in the worktree column
+                * because the scan code tries really hard to not have to compute it.
+                */
+               assert(d->mode_worktree == 0);
+               d->mode_worktree = d->mode_index;
+       }
+}
+
+/*
+ * Print porcelain v2 info for tracked entries with changes.
+ */
+static void wt_porcelain_v2_print_changed_entry(
+       struct string_list_item *it,
+       struct wt_status *s)
+{
+       struct wt_status_change_data *d = it->util;
+       struct strbuf buf_index = STRBUF_INIT;
+       struct strbuf buf_head = STRBUF_INIT;
+       const char *path_index = NULL;
+       const char *path_head = NULL;
+       char key[3];
+       char submodule_token[5];
+       char sep_char, eol_char;
+
+       wt_porcelain_v2_fix_up_changed(it, s);
+       wt_porcelain_v2_submodule_state(d, submodule_token);
+
+       key[0] = d->index_status ? d->index_status : '.';
+       key[1] = d->worktree_status ? d->worktree_status : '.';
+       key[2] = 0;
+
+       if (s->null_termination) {
+               /*
+                * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
+                * A single NUL character separates them.
+                */
+               sep_char = '\0';
+               eol_char = '\0';
+               path_index = it->string;
+               path_head = d->head_path;
+       } else {
+               /*
+                * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
+                * The source path is only present when necessary.
+                * A single TAB separates them (because paths can contain spaces
+                * which are not escaped and C-quoting does escape TAB characters).
+                */
+               sep_char = '\t';
+               eol_char = '\n';
+               path_index = quote_path(it->string, s->prefix, &buf_index);
+               if (d->head_path)
+                       path_head = quote_path(d->head_path, s->prefix, &buf_head);
+       }
+
+       if (path_head)
+               fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
+                               key, submodule_token,
+                               d->mode_head, d->mode_index, d->mode_worktree,
+                               oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
+                               key[0], d->score,
+                               path_index, sep_char, path_head, eol_char);
+       else
+               fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
+                               key, submodule_token,
+                               d->mode_head, d->mode_index, d->mode_worktree,
+                               oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
+                               path_index, eol_char);
+
+       strbuf_release(&buf_index);
+       strbuf_release(&buf_head);
+}
+
+/*
+ * Print porcelain v2 status info for unmerged entries.
+ */
+static void wt_porcelain_v2_print_unmerged_entry(
+       struct string_list_item *it,
+       struct wt_status *s)
+{
+       struct wt_status_change_data *d = it->util;
+       const struct cache_entry *ce;
+       struct strbuf buf_index = STRBUF_INIT;
+       const char *path_index = NULL;
+       int pos, stage, sum;
+       struct {
+               int mode;
+               struct object_id oid;
+       } stages[3];
+       char *key;
+       char submodule_token[5];
+       char unmerged_prefix = 'u';
+       char eol_char = s->null_termination ? '\0' : '\n';
+
+       wt_porcelain_v2_submodule_state(d, submodule_token);
+
+       switch (d->stagemask) {
+       case 1: key = "DD"; break; /* both deleted */
+       case 2: key = "AU"; break; /* added by us */
+       case 3: key = "UD"; break; /* deleted by them */
+       case 4: key = "UA"; break; /* added by them */
+       case 5: key = "DU"; break; /* deleted by us */
+       case 6: key = "AA"; break; /* both added */
+       case 7: key = "UU"; break; /* both modified */
+       default:
+               die("BUG: unhandled unmerged status %x", d->stagemask);
+       }
+
+       /*
+        * Disregard d.aux.porcelain_v2 data that we accumulated
+        * for the head and index columns during the scans and
+        * replace with the actual stage data.
+        *
+        * Note that this is a last-one-wins for each the individual
+        * stage [123] columns in the event of multiple cache entries
+        * for same stage.
+        */
+       memset(stages, 0, sizeof(stages));
+       sum = 0;
+       pos = cache_name_pos(it->string, strlen(it->string));
+       assert(pos < 0);
+       pos = -pos-1;
+       while (pos < active_nr) {
+               ce = active_cache[pos++];
+               stage = ce_stage(ce);
+               if (strcmp(ce->name, it->string) || !stage)
+                       break;
+               stages[stage - 1].mode = ce->ce_mode;
+               hashcpy(stages[stage - 1].oid.hash, ce->sha1);
+               sum |= (1 << (stage - 1));
+       }
+       if (sum != d->stagemask)
+               die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
+
+       if (s->null_termination)
+               path_index = it->string;
+       else
+               path_index = quote_path(it->string, s->prefix, &buf_index);
+
+       fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
+                       unmerged_prefix, key, submodule_token,
+                       stages[0].mode, /* stage 1 */
+                       stages[1].mode, /* stage 2 */
+                       stages[2].mode, /* stage 3 */
+                       d->mode_worktree,
+                       oid_to_hex(&stages[0].oid), /* stage 1 */
+                       oid_to_hex(&stages[1].oid), /* stage 2 */
+                       oid_to_hex(&stages[2].oid), /* stage 3 */
+                       path_index,
+                       eol_char);
+
+       strbuf_release(&buf_index);
+}
+
+/*
+ * Print porcelain V2 status info for untracked and ignored entries.
+ */
+static void wt_porcelain_v2_print_other(
+       struct string_list_item *it,
+       struct wt_status *s,
+       char prefix)
+{
+       struct strbuf buf = STRBUF_INIT;
+       const char *path;
+       char eol_char;
+
+       if (s->null_termination) {
+               path = it->string;
+               eol_char = '\0';
+       } else {
+               path = quote_path(it->string, s->prefix, &buf);
+               eol_char = '\n';
+       }
+
+       fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
+
+       strbuf_release(&buf);
+}
+
+/*
+ * Print porcelain V2 status.
+ *
+ * [<v2_branch>]
+ * [<v2_changed_items>]*
+ * [<v2_unmerged_items>]*
+ * [<v2_untracked_items>]*
+ * [<v2_ignored_items>]*
+ *
+ */
+static void wt_porcelain_v2_print(struct wt_status *s)
+{
+       struct wt_status_change_data *d;
+       struct string_list_item *it;
+       int i;
+
+       if (s->show_branch)
+               wt_porcelain_v2_print_tracking(s);
+
+       for (i = 0; i < s->change.nr; i++) {
+               it = &(s->change.items[i]);
+               d = it->util;
+               if (!d->stagemask)
+                       wt_porcelain_v2_print_changed_entry(it, s);
+       }
+
+       for (i = 0; i < s->change.nr; i++) {
+               it = &(s->change.items[i]);
+               d = it->util;
+               if (d->stagemask)
+                       wt_porcelain_v2_print_unmerged_entry(it, s);
+       }
+
+       for (i = 0; i < s->untracked.nr; i++) {
+               it = &(s->untracked.items[i]);
+               wt_porcelain_v2_print_other(it, s, '?');
+       }
+
+       for (i = 0; i < s->ignored.nr; i++) {
+               it = &(s->ignored.items[i]);
+               wt_porcelain_v2_print_other(it, s, '!');
+       }
+}
+
 void wt_status_print(struct wt_status *s)
 {
        switch (s->status_format) {
@@ -1822,7 +2199,7 @@ void wt_status_print(struct wt_status *s)
                wt_porcelain_print(s);
                break;
        case STATUS_FORMAT_PORCELAIN_V2:
-               /* TODO */
+               wt_porcelain_v2_print(s);
                break;
        case STATUS_FORMAT_UNSPECIFIED:
                die("BUG: finalize_deferred_config() should have been called");
@@ -1833,3 +2210,80 @@ void wt_status_print(struct wt_status *s)
                break;
        }
 }
+
+/**
+ * Returns 1 if there are unstaged changes, 0 otherwise.
+ */
+int has_unstaged_changes(int ignore_submodules)
+{
+       struct rev_info rev_info;
+       int result;
+
+       init_revisions(&rev_info, NULL);
+       if (ignore_submodules)
+               DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
+       DIFF_OPT_SET(&rev_info.diffopt, QUICK);
+       diff_setup_done(&rev_info.diffopt);
+       result = run_diff_files(&rev_info, 0);
+       return diff_result_code(&rev_info.diffopt, result);
+}
+
+/**
+ * Returns 1 if there are uncommitted changes, 0 otherwise.
+ */
+int has_uncommitted_changes(int ignore_submodules)
+{
+       struct rev_info rev_info;
+       int result;
+
+       if (is_cache_unborn())
+               return 0;
+
+       init_revisions(&rev_info, NULL);
+       if (ignore_submodules)
+               DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
+       DIFF_OPT_SET(&rev_info.diffopt, QUICK);
+       add_head_to_pending(&rev_info);
+       diff_setup_done(&rev_info.diffopt);
+       result = run_diff_index(&rev_info, 1);
+       return diff_result_code(&rev_info.diffopt, result);
+}
+
+/**
+ * If the work tree has unstaged or uncommitted changes, dies with the
+ * appropriate message.
+ */
+int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
+{
+       struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file));
+       int err = 0;
+
+       hold_locked_index(lock_file, 0);
+       refresh_cache(REFRESH_QUIET);
+       update_index_if_able(&the_index, lock_file);
+       rollback_lock_file(lock_file);
+
+       if (has_unstaged_changes(ignore_submodules)) {
+               /* TRANSLATORS: the action is e.g. "pull with rebase" */
+               error(_("cannot %s: You have unstaged changes."), _(action));
+               err = 1;
+       }
+
+       if (has_uncommitted_changes(ignore_submodules)) {
+               if (err)
+                       error(_("additionally, your index contains uncommitted changes."));
+               else
+                       error(_("cannot %s: Your index contains uncommitted changes."),
+                             _(action));
+               err = 1;
+       }
+
+       if (err) {
+               if (hint)
+                       error("%s", hint);
+               if (!gently)
+                       exit(128);
+       }
+
+       return err;
+}