From: Daniel Ferreira <bnmvco@xxxxxxxxx>
This implements the `status` command of `git add -i`. The data
structures introduced in this commit will be extended as needed later.
At this point, we re-implement only part of the `list_and_choose()`
function of the Perl script `git-add--interactive.perl` and call it
`list()`. It does not yet color anything, or do columns, or allow user
input.
Over the course of the next commits, we will introduce a
`list_and_choose()` function that uses `list()` to display the list of
options and let the user choose one or more of the displayed items. This
will be used to implement the main loop of the built-in `git add -i`, at
which point the new `status` command can actually be used.
Note that we pass the list of items as a `struct item **` as opposed to
a `struct item *`, to allow for the actual items to contain much more
information than merely the name.
Signed-off-by: Daniel Ferreira <bnmvco@xxxxxxxxx>
Signed-off-by: Slavica Djukic <slawica92@xxxxxxxxxxx>
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
add-interactive.c | 265 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 264 insertions(+), 1 deletion(-)
diff --git a/add-interactive.c b/add-interactive.c
index 482e458dc6..59b28011f7 100644
--- a/add-interactive.c
+++ b/add-interactive.c
@@ -1,7 +1,270 @@
#include "cache.h"
#include "add-interactive.h"
+#include "diffcore.h"
+#include "revision.h"
+#include "refs.h"
+
+struct item {
+ const char *name;
+};
+
+struct list_options {
+ const char *header;
+ void (*print_item)(int i, struct item *item, void *print_item_data);
+ void *print_item_data;
+};
+
+static void list(struct item **list, size_t nr, struct list_options *opts)
+{
+ int i;
+
+ if (!nr)
+ return;
+
+ if (opts->header)
+ printf("%s\n", opts->header);
+
+ for (i = 0; i < nr; i++) {
+ opts->print_item(i, list[i], opts->print_item_data);
+ putchar('\n');
+ }
+}
+
+struct adddel {
+ uintmax_t add, del;
+ unsigned seen:1, binary:1;
+};
+
+struct file_list {
+ struct file_item {
+ struct item item;
+ struct adddel index, worktree;
+ } **file;
+ size_t nr, alloc;
+};
+
+static void add_file_item(struct file_list *list, const char *name)
+{
+ struct file_item *item;
+
+ FLEXPTR_ALLOC_STR(item, item.name, name);
+
+ ALLOC_GROW(list->file, list->nr + 1, list->alloc);
+ list->file[list->nr++] = item;
+}
+
+static void reset_file_list(struct file_list *list)
+{
+ size_t i;
+
+ for (i = 0; i < list->nr; i++)
+ free(list->file[i]);
+ list->nr = 0;
+}
+
+static void release_file_list(struct file_list *list)
+{
+ reset_file_list(list);
+ FREE_AND_NULL(list->file);
+ list->alloc = 0;
+}
+
+static int file_item_cmp(const void *a, const void *b)
+{
+ const struct file_item * const *f1 = a;
+ const struct file_item * const *f2 = b;
+
+ return strcmp((*f1)->item.name, (*f2)->item.name);
+}
+
+struct pathname_entry {
+ struct hashmap_entry ent;
+ size_t index;
+ char pathname[FLEX_ARRAY];
+};
+
+static int pathname_entry_cmp(const void *unused_cmp_data,
+ const void *entry, const void *entry_or_key,
+ const void *pathname)
+{
+ const struct pathname_entry *e1 = entry, *e2 = entry_or_key;
+
+ return strcmp(e1->pathname,
+ pathname ? (const char *)pathname : e2->pathname);
+}
+
+struct collection_status {
+ enum { FROM_WORKTREE = 0, FROM_INDEX = 1 } phase;
+
+ const char *reference;
+
+ struct file_list *list;
+ struct hashmap file_map;
+};
+
+static void collect_changes_cb(struct diff_queue_struct *q,
+ struct diff_options *options,
+ void *data)
+{
+ struct collection_status *s = data;
+ struct diffstat_t stat = { 0 };
+ int i;
+
+ if (!q->nr)
+ return;
+
+ compute_diffstat(options, &stat, q);
+
+ for (i = 0; i < stat.nr; i++) {
+ const char *name = stat.files[i]->name;
+ int hash = strhash(name);
+ struct pathname_entry *entry;
+ size_t file_index;
+ struct file_item *file;
+ struct adddel *adddel;
+
+ entry = hashmap_get_from_hash(&s->file_map, hash, name);
+ if (entry)
+ file_index = entry->index;
+ else {
+ FLEX_ALLOC_STR(entry, pathname, name);
+ hashmap_entry_init(entry, hash);
+ entry->index = file_index = s->list->nr;
+ hashmap_add(&s->file_map, entry);
+
+ add_file_item(s->list, name);
+ }
+ file = s->list->file[file_index];
+
+ adddel = s->phase == FROM_INDEX ? &file->index : &file->worktree;
+ adddel->seen = 1;
+ adddel->add = stat.files[i]->added;
+ adddel->del = stat.files[i]->deleted;
+ if (stat.files[i]->is_binary)
+ adddel->binary = 1;
+ }
+}
+
+static int get_modified_files(struct repository *r, struct file_list *list,
+ const struct pathspec *ps)
+{
+ struct object_id head_oid;
+ int is_initial = !resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
+ &head_oid, NULL);
+ struct collection_status s = { FROM_WORKTREE };
+
+ if (repo_read_index_preload(r, ps, 0) < 0)
+ return error(_("could not read index"));
+
+ s.list = list;
+ hashmap_init(&s.file_map, pathname_entry_cmp, NULL, 0);
+
+ for (s.phase = FROM_WORKTREE; s.phase <= FROM_INDEX; s.phase++) {
+ struct rev_info rev;
+ struct setup_revision_opt opt = { 0 };
+
+ opt.def = is_initial ?
+ empty_tree_oid_hex() : oid_to_hex(&head_oid);
+
+ init_revisions(&rev, NULL);
+ setup_revisions(0, NULL, &rev, &opt);
+
+ rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
+ rev.diffopt.format_callback = collect_changes_cb;
+ rev.diffopt.format_callback_data = &s;
+
+ if (ps)
+ copy_pathspec(&rev.prune_data, ps);
+
+ if (s.phase == FROM_INDEX)
+ run_diff_index(&rev, 1);
+ else {
+ rev.diffopt.flags.ignore_dirty_submodules = 1;
+ run_diff_files(&rev, 0);
+ }
+ }
+ hashmap_free(&s.file_map, 1);
+
+ /* While the diffs are ordered already, we ran *two* diffs... */
+ QSORT(list->file, list->nr, file_item_cmp);
+
+ return 0;
+}
+
+static void populate_wi_changes(struct strbuf *buf,
+ struct adddel *ad, const char *no_changes)
+{
+ if (ad->binary)
+ strbuf_addstr(buf, _("binary"));
+ else if (ad->seen)
+ strbuf_addf(buf, "+%"PRIuMAX"/-%"PRIuMAX,
+ (uintmax_t)ad->add, (uintmax_t)ad->del);
+ else
+ strbuf_addstr(buf, no_changes);
+}
+
+struct print_file_item_data {
+ const char *modified_fmt;
+ struct strbuf buf, index, worktree;
+};
+
+static void print_file_item(int i, struct item *item,
+ void *print_file_item_data)
+{
+ struct file_item *c = (struct file_item *)item;
+ struct print_file_item_data *d = print_file_item_data;
+
+ strbuf_reset(&d->index);
+ strbuf_reset(&d->worktree);
+ strbuf_reset(&d->buf);
+
+ populate_wi_changes(&d->worktree, &c->worktree, _("nothing"));
+ populate_wi_changes(&d->index, &c->index, _("unchanged"));
+ strbuf_addf(&d->buf, d->modified_fmt,
+ d->index.buf, d->worktree.buf, item->name);
+
+ printf(" %2d: %s", i + 1, d->buf.buf);
+}
+
+static int run_status(struct repository *r, const struct pathspec *ps,
+ struct file_list *files, struct list_options *opts)
+{
+ reset_file_list(files);
+
+ if (get_modified_files(r, files, ps) < 0)
+ return -1;
+
+ if (files->nr)
+ list((struct item **)files->file, files->nr, opts);
+ putchar('\n');
+
+ return 0;
+}
int run_add_i(struct repository *r, const struct pathspec *ps)
{
- die(_("No commands are available in the built-in `git add -i` yet!"));
+ struct print_file_item_data print_file_item_data = {
+ "%12s %12s %s", STRBUF_INIT, STRBUF_INIT, STRBUF_INIT
+ };
+ struct list_options opts = {
+ NULL, print_file_item, &print_file_item_data
+ };
+ struct strbuf header = STRBUF_INIT;
+ struct file_list files = { NULL };
+ int res = 0;
+
+ strbuf_addstr(&header, " ");
+ strbuf_addf(&header, print_file_item_data.modified_fmt,
+ _("staged"), _("unstaged"), _("path"));
+ opts.header = header.buf;
+
+ res = run_status(r, ps, &files, &opts);
+
+ release_file_list(&files);
+ strbuf_release(&print_file_item_data.buf);
+ strbuf_release(&print_file_item_data.index);
+ strbuf_release(&print_file_item_data.worktree);
+ strbuf_release(&header);
+
+ return res;
}
--
gitgitgadget
