completion: add more parameter value completion
[gitweb.git] / ref-filter.c
index 3e8ee04d09b2271ea9b0a9a07de6ec932ad09387..cf80d4d69b75d778df90d2e16f7d5762ef86da4f 100644 (file)
@@ -19,6 +19,7 @@
 #include "wt-status.h"
 #include "commit-slab.h"
 #include "commit-graph.h"
+#include "commit-reach.h"
 
 static struct ref_msg {
        const char *gone;
@@ -229,13 +230,31 @@ static int objecttype_atom_parser(const struct ref_format *format, struct used_a
 
 static int objectsize_atom_parser(const struct ref_format *format, struct used_atom *atom,
                                  const char *arg, struct strbuf *err)
+{
+       if (!arg) {
+               if (*atom->name == '*')
+                       oi_deref.info.sizep = &oi_deref.size;
+               else
+                       oi.info.sizep = &oi.size;
+       } else if (!strcmp(arg, "disk")) {
+               if (*atom->name == '*')
+                       oi_deref.info.disk_sizep = &oi_deref.disk_size;
+               else
+                       oi.info.disk_sizep = &oi.disk_size;
+       } else
+               return strbuf_addf_ret(err, -1, _("unrecognized %%(objectsize) argument: %s"), arg);
+       return 0;
+}
+
+static int deltabase_atom_parser(const struct ref_format *format, struct used_atom *atom,
+                                const char *arg, struct strbuf *err)
 {
        if (arg)
-               return strbuf_addf_ret(err, -1, _("%%(objectsize) does not take arguments"));
+               return strbuf_addf_ret(err, -1, _("%%(deltabase) does not take arguments"));
        if (*atom->name == '*')
-               oi_deref.info.sizep = &oi_deref.size;
+               oi_deref.info.delta_base_sha1 = oi_deref.delta_base_oid.hash;
        else
-               oi.info.sizep = &oi.size;
+               oi.info.delta_base_sha1 = oi.delta_base_oid.hash;
        return 0;
 }
 
@@ -430,6 +449,7 @@ static struct {
        { "objecttype", SOURCE_OTHER, FIELD_STR, objecttype_atom_parser },
        { "objectsize", SOURCE_OTHER, FIELD_ULONG, objectsize_atom_parser },
        { "objectname", SOURCE_OTHER, FIELD_STR, objectname_atom_parser },
+       { "deltabase", SOURCE_OTHER, FIELD_STR, deltabase_atom_parser },
        { "tree", SOURCE_OBJ },
        { "parent", SOURCE_OBJ },
        { "numparent", SOURCE_OBJ, FIELD_ULONG },
@@ -465,6 +485,10 @@ static struct {
        { "if", SOURCE_NONE, FIELD_STR, if_atom_parser },
        { "then", SOURCE_NONE },
        { "else", SOURCE_NONE },
+       /*
+        * Please update $__git_ref_fieldlist in git-completion.bash
+        * when you add new atoms
+        */
 };
 
 #define REF_FORMATTING_STATE_INIT  { 0, NULL }
@@ -533,6 +557,10 @@ static int parse_ref_filter_atom(const struct ref_format *format,
        if (ARRAY_SIZE(valid_atom) <= i)
                return strbuf_addf_ret(err, -1, _("unknown field name: %.*s"),
                                       (int)(ep-atom), atom);
+       if (valid_atom[i].source != SOURCE_NONE && !have_git_dir())
+               return strbuf_addf_ret(err, -1,
+                                      _("not a git repository, but the field '%.*s' requires access to object data"),
+                                      (int)(ep-atom), atom);
 
        /* Add it in, including the deref prefix */
        at = used_atom_cnt;
@@ -874,11 +902,15 @@ static void grab_common_values(struct atom_value *val, int deref, struct expand_
                if (deref)
                        name++;
                if (!strcmp(name, "objecttype"))
-                       v->s = type_name(oi->type);
-               else if (!strcmp(name, "objectsize")) {
+                       v->s = xstrdup(type_name(oi->type));
+               else if (!strcmp(name, "objectsize:disk")) {
+                       v->value = oi->disk_size;
+                       v->s = xstrfmt("%"PRIuMAX, (uintmax_t)oi->disk_size);
+               } else if (!strcmp(name, "objectsize")) {
                        v->value = oi->size;
-                       v->s = xstrfmt("%lu", oi->size);
-               }
+                       v->s = xstrfmt("%"PRIuMAX , (uintmax_t)oi->size);
+               } else if (!strcmp(name, "deltabase"))
+                       v->s = xstrdup(oid_to_hex(&oi->delta_base_oid));
                else if (deref)
                        grab_objectname(name, &oi->oid, v, &used_atom[i]);
        }
@@ -898,9 +930,9 @@ static void grab_tag_values(struct atom_value *val, int deref, struct object *ob
                if (deref)
                        name++;
                if (!strcmp(name, "tag"))
-                       v->s = tag->tag;
+                       v->s = xstrdup(tag->tag);
                else if (!strcmp(name, "type") && tag->tagged)
-                       v->s = type_name(tag->tagged->type);
+                       v->s = xstrdup(type_name(tag->tagged->type));
                else if (!strcmp(name, "object") && tag->tagged)
                        v->s = xstrdup(oid_to_hex(&tag->tagged->oid));
        }
@@ -1031,7 +1063,7 @@ static void grab_date(const char *buf, struct atom_value *v, const char *atomnam
        v->value = timestamp;
        return;
  bad:
-       v->s = "";
+       v->s = xstrdup("");
        v->value = 0;
 }
 
@@ -1226,7 +1258,7 @@ static void fill_missing_values(struct atom_value *val)
        for (i = 0; i < used_atom_cnt; i++) {
                struct atom_value *v = &val[i];
                if (v->s == NULL)
-                       v->s = "";
+                       v->s = xstrdup("");
        }
 }
 
@@ -1272,7 +1304,8 @@ static inline char *copy_advance(char *dst, const char *src)
 static const char *lstrip_ref_components(const char *refname, int len)
 {
        long remaining = len;
-       const char *start = refname;
+       const char *start = xstrdup(refname);
+       const char *to_free = start;
 
        if (len < 0) {
                int i;
@@ -1293,20 +1326,24 @@ static const char *lstrip_ref_components(const char *refname, int len)
        while (remaining > 0) {
                switch (*start++) {
                case '\0':
-                       return "";
+                       free((char *)to_free);
+                       return xstrdup("");
                case '/':
                        remaining--;
                        break;
                }
        }
 
+       start = xstrdup(start);
+       free((char *)to_free);
        return start;
 }
 
 static const char *rstrip_ref_components(const char *refname, int len)
 {
        long remaining = len;
-       char *start = xstrdup(refname);
+       const char *start = xstrdup(refname);
+       const char *to_free = start;
 
        if (len < 0) {
                int i;
@@ -1326,9 +1363,10 @@ static const char *rstrip_ref_components(const char *refname, int len)
 
        while (remaining-- > 0) {
                char *p = strrchr(start, '/');
-               if (p == NULL)
-                       return "";
-               else
+               if (p == NULL) {
+                       free((char *)to_free);
+                       return xstrdup("");
+               } else
                        p[0] = '\0';
        }
        return start;
@@ -1343,7 +1381,7 @@ static const char *show_ref(struct refname_atom *atom, const char *refname)
        else if (atom->option == R_RSTRIP)
                return rstrip_ref_components(refname, atom->rstrip);
        else
-               return refname;
+               return xstrdup(refname);
 }
 
 static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
@@ -1357,7 +1395,7 @@ static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
                                       NULL, AHEAD_BEHIND_FULL) < 0) {
                        *s = xstrdup(msgs.gone);
                } else if (!num_ours && !num_theirs)
-                       *s = "";
+                       *s = xstrdup("");
                else if (!num_ours)
                        *s = xstrfmt(msgs.behind, num_theirs);
                else if (!num_theirs)
@@ -1372,36 +1410,31 @@ static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
                }
        } else if (atom->u.remote_ref.option == RR_TRACKSHORT) {
                if (stat_tracking_info(branch, &num_ours, &num_theirs,
-                                      NULL, AHEAD_BEHIND_FULL) < 0)
+                                      NULL, AHEAD_BEHIND_FULL) < 0) {
+                       *s = xstrdup("");
                        return;
-
+               }
                if (!num_ours && !num_theirs)
-                       *s = "=";
+                       *s = xstrdup("=");
                else if (!num_ours)
-                       *s = "<";
+                       *s = xstrdup("<");
                else if (!num_theirs)
-                       *s = ">";
+                       *s = xstrdup(">");
                else
-                       *s = "<>";
+                       *s = xstrdup("<>");
        } else if (atom->u.remote_ref.option == RR_REMOTE_NAME) {
                int explicit;
                const char *remote = atom->u.remote_ref.push ?
                        pushremote_for_branch(branch, &explicit) :
                        remote_for_branch(branch, &explicit);
-               if (explicit)
-                       *s = xstrdup(remote);
-               else
-                       *s = "";
+               *s = xstrdup(explicit ? remote : "");
        } else if (atom->u.remote_ref.option == RR_REMOTE_REF) {
                int explicit;
                const char *merge;
 
                merge = remote_ref_for_branch(branch, atom->u.remote_ref.push,
                                              &explicit);
-               if (explicit)
-                       *s = xstrdup(merge);
-               else
-                       *s = "";
+               *s = xstrdup(explicit ? merge : "");
        } else
                BUG("unhandled RR_* enum");
 }
@@ -1411,7 +1444,7 @@ char *get_head_description(void)
        struct strbuf desc = STRBUF_INIT;
        struct wt_status_state state;
        memset(&state, 0, sizeof(state));
-       wt_status_get_state(&state, 1);
+       wt_status_get_state(the_repository, &state, 1);
        if (state.rebase_in_progress ||
            state.rebase_interactive_in_progress) {
                if (state.branch)
@@ -1450,7 +1483,7 @@ char *get_head_description(void)
 static const char *get_symref(struct used_atom *atom, struct ref_array_item *ref)
 {
        if (!ref->symref)
-               return "";
+               return xstrdup("");
        else
                return show_ref(&atom->u.refname, ref->symref);
 }
@@ -1476,6 +1509,8 @@ static int get_object(struct ref_array_item *ref, int deref, struct object **obj
                                     OBJECT_INFO_LOOKUP_REPLACE))
                return strbuf_addf_ret(err, -1, _("missing object %s for %s"),
                                       oid_to_hex(&oi->oid), ref->refname);
+       if (oi->info.disk_sizep && oi->disk_size < 0)
+               BUG("Object size is less than zero.");
 
        if (oi->info.contentp) {
                *obj = parse_object_buffer(the_repository, &oi->oid, oi->type, oi->size, oi->content, &eaten);
@@ -1509,7 +1544,7 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
                                             NULL, NULL);
                if (!ref->symref)
-                       ref->symref = "";
+                       ref->symref = xstrdup("");
        }
 
        /* Fill in specials first */
@@ -1535,20 +1570,23 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        refname = get_symref(atom, ref);
                else if (starts_with(name, "upstream")) {
                        const char *branch_name;
-                       v->s = "";
                        /* only local branches may have an upstream */
                        if (!skip_prefix(ref->refname, "refs/heads/",
-                                        &branch_name))
+                                        &branch_name)) {
+                               v->s = xstrdup("");
                                continue;
+                       }
                        branch = branch_get(branch_name);
 
                        refname = branch_get_upstream(branch, NULL);
                        if (refname)
                                fill_remote_ref_details(atom, refname, branch, &v->s);
+                       else
+                               v->s = xstrdup("");
                        continue;
                } else if (atom->u.remote_ref.push) {
                        const char *branch_name;
-                       v->s = "";
+                       v->s = xstrdup("");
                        if (!skip_prefix(ref->refname, "refs/heads/",
                                         &branch_name))
                                continue;
@@ -1561,10 +1599,12 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                                if (!refname)
                                        continue;
                        }
+                       /* We will definitely re-init v->s on the next line. */
+                       free((char *)v->s);
                        fill_remote_ref_details(atom, refname, branch, &v->s);
                        continue;
                } else if (starts_with(name, "color:")) {
-                       v->s = atom->u.color;
+                       v->s = xstrdup(atom->u.color);
                        continue;
                } else if (!strcmp(name, "flag")) {
                        char buf[256], *cp = buf;
@@ -1573,7 +1613,7 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        if (ref->flag & REF_ISPACKED)
                                cp = copy_advance(cp, ",packed");
                        if (cp == buf)
-                               v->s = "";
+                               v->s = xstrdup("");
                        else {
                                *cp = '\0';
                                v->s = xstrdup(buf + 1);
@@ -1583,40 +1623,42 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        continue;
                } else if (!strcmp(name, "HEAD")) {
                        if (atom->u.head && !strcmp(ref->refname, atom->u.head))
-                               v->s = "*";
+                               v->s = xstrdup("*");
                        else
-                               v->s = " ";
+                               v->s = xstrdup(" ");
                        continue;
                } else if (starts_with(name, "align")) {
                        v->handler = align_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (!strcmp(name, "end")) {
                        v->handler = end_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (starts_with(name, "if")) {
                        const char *s;
-                       v->s = "";
                        if (skip_prefix(name, "if:", &s))
                                v->s = xstrdup(s);
+                       else
+                               v->s = xstrdup("");
                        v->handler = if_atom_handler;
                        continue;
                } else if (!strcmp(name, "then")) {
                        v->handler = then_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (!strcmp(name, "else")) {
                        v->handler = else_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else
                        continue;
 
                if (!deref)
-                       v->s = refname;
+                       v->s = xstrdup(refname);
                else
                        v->s = xstrfmt("%s^{}", refname);
+               free((char *)refname);
        }
 
        for (i = 0; i < used_atom_cnt; i++) {
@@ -1675,144 +1717,6 @@ static int get_ref_atom_value(struct ref_array_item *ref, int atom,
        return 0;
 }
 
-/*
- * Unknown has to be "0" here, because that's the default value for
- * contains_cache slab entries that have not yet been assigned.
- */
-enum contains_result {
-       CONTAINS_UNKNOWN = 0,
-       CONTAINS_NO,
-       CONTAINS_YES
-};
-
-define_commit_slab(contains_cache, enum contains_result);
-
-struct ref_filter_cbdata {
-       struct ref_array *array;
-       struct ref_filter *filter;
-       struct contains_cache contains_cache;
-       struct contains_cache no_contains_cache;
-};
-
-/*
- * Mimicking the real stack, this stack lives on the heap, avoiding stack
- * overflows.
- *
- * At each recursion step, the stack items points to the commits whose
- * ancestors are to be inspected.
- */
-struct contains_stack {
-       int nr, alloc;
-       struct contains_stack_entry {
-               struct commit *commit;
-               struct commit_list *parents;
-       } *contains_stack;
-};
-
-static int in_commit_list(const struct commit_list *want, struct commit *c)
-{
-       for (; want; want = want->next)
-               if (!oidcmp(&want->item->object.oid, &c->object.oid))
-                       return 1;
-       return 0;
-}
-
-/*
- * Test whether the candidate is contained in the list.
- * Do not recurse to find out, though, but return -1 if inconclusive.
- */
-static enum contains_result contains_test(struct commit *candidate,
-                                         const struct commit_list *want,
-                                         struct contains_cache *cache,
-                                         uint32_t cutoff)
-{
-       enum contains_result *cached = contains_cache_at(cache, candidate);
-
-       /* If we already have the answer cached, return that. */
-       if (*cached)
-               return *cached;
-
-       /* or are we it? */
-       if (in_commit_list(want, candidate)) {
-               *cached = CONTAINS_YES;
-               return CONTAINS_YES;
-       }
-
-       /* Otherwise, we don't know; prepare to recurse */
-       parse_commit_or_die(candidate);
-
-       if (candidate->generation < cutoff)
-               return CONTAINS_NO;
-
-       return CONTAINS_UNKNOWN;
-}
-
-static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
-{
-       ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc);
-       contains_stack->contains_stack[contains_stack->nr].commit = candidate;
-       contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents;
-}
-
-static enum contains_result contains_tag_algo(struct commit *candidate,
-                                             const struct commit_list *want,
-                                             struct contains_cache *cache)
-{
-       struct contains_stack contains_stack = { 0, 0, NULL };
-       enum contains_result result;
-       uint32_t cutoff = GENERATION_NUMBER_INFINITY;
-       const struct commit_list *p;
-
-       for (p = want; p; p = p->next) {
-               struct commit *c = p->item;
-               load_commit_graph_info(the_repository, c);
-               if (c->generation < cutoff)
-                       cutoff = c->generation;
-       }
-
-       result = contains_test(candidate, want, cache, cutoff);
-       if (result != CONTAINS_UNKNOWN)
-               return result;
-
-       push_to_contains_stack(candidate, &contains_stack);
-       while (contains_stack.nr) {
-               struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1];
-               struct commit *commit = entry->commit;
-               struct commit_list *parents = entry->parents;
-
-               if (!parents) {
-                       *contains_cache_at(cache, commit) = CONTAINS_NO;
-                       contains_stack.nr--;
-               }
-               /*
-                * If we just popped the stack, parents->item has been marked,
-                * therefore contains_test will return a meaningful yes/no.
-                */
-               else switch (contains_test(parents->item, want, cache, cutoff)) {
-               case CONTAINS_YES:
-                       *contains_cache_at(cache, commit) = CONTAINS_YES;
-                       contains_stack.nr--;
-                       break;
-               case CONTAINS_NO:
-                       entry->parents = parents->next;
-                       break;
-               case CONTAINS_UNKNOWN:
-                       push_to_contains_stack(parents->item, &contains_stack);
-                       break;
-               }
-       }
-       free(contains_stack.contains_stack);
-       return contains_test(candidate, want, cache, cutoff);
-}
-
-static int commit_contains(struct ref_filter *filter, struct commit *commit,
-                          struct commit_list *list, struct contains_cache *cache)
-{
-       if (filter->with_commit_tag_algo)
-               return contains_tag_algo(commit, list, cache) == CONTAINS_YES;
-       return is_descendant_of(commit, list);
-}
-
 /*
  * Return 1 if the refname matches one of the patterns, otherwise 0.
  * A pattern can be a literal prefix (e.g. a refname "refs/heads/master"
@@ -2048,6 +1952,13 @@ static int filter_ref_kind(struct ref_filter *filter, const char *refname)
        return ref_kind_from_refname(refname);
 }
 
+struct ref_filter_cbdata {
+       struct ref_array *array;
+       struct ref_filter *filter;
+       struct contains_cache contains_cache;
+       struct contains_cache no_contains_cache;
+};
+
 /*
  * A call-back given to for_each_ref().  Filter refs and keep them for
  * later object processing.
@@ -2118,6 +2029,10 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
 static void free_array_item(struct ref_array_item *item)
 {
        free((char *)item->symref);
+       if (item->value) {
+               free((char *)item->value->s);
+               free(item->value);
+       }
        free(item);
 }
 
@@ -2126,6 +2041,10 @@ void ref_array_clear(struct ref_array *array)
 {
        int i;
 
+       for (i = 0; i < used_atom_cnt; i++)
+               free((char *)used_atom[i].name);
+       FREE_AND_NULL(used_atom);
+       used_atom_cnt = 0;
        for (i = 0; i < array->nr; i++)
                free_array_item(array->items[i]);
        FREE_AND_NULL(array->items);
@@ -2140,7 +2059,7 @@ static void do_merge_filter(struct ref_filter_cbdata *ref_cbdata)
        struct ref_array *array = ref_cbdata->array;
        struct commit **to_clear = xcalloc(sizeof(struct commit *), array->nr);
 
-       init_revisions(&revs, NULL);
+       repo_init_revisions(the_repository, &revs, NULL);
 
        for (i = 0; i < array->nr; i++) {
                struct ref_array_item *item = array->items[i];
@@ -2430,11 +2349,15 @@ int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
        struct object_id oid;
        int no_merged = starts_with(opt->long_name, "no");
 
+       BUG_ON_OPT_NEG(unset);
+
        if (rf->merge) {
                if (no_merged) {
-                       return opterror(opt, "is incompatible with --merged", 0);
+                       return error(_("option `%s' is incompatible with --merged"),
+                                    opt->long_name);
                } else {
-                       return opterror(opt, "is incompatible with --no-merged", 0);
+                       return error(_("option `%s' is incompatible with --no-merged"),
+                                    opt->long_name);
                }
        }
 
@@ -2448,7 +2371,7 @@ int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
        rf->merge_commit = lookup_commit_reference_gently(the_repository,
                                                          &oid, 0);
        if (!rf->merge_commit)
-               return opterror(opt, "must point to a commit", 0);
+               return error(_("option `%s' must point to a commit"), opt->long_name);
 
        return 0;
 }