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|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "iterator.h"
#include "tree.h"
#include "ignore.h"
#include "buffer.h"
#include "git2/submodule.h"
#include <ctype.h>
#define ITERATOR_SET_CB(P,NAME_LC) do { \
(P)->cb.current = NAME_LC ## _iterator__current; \
(P)->cb.at_end = NAME_LC ## _iterator__at_end; \
(P)->cb.advance = NAME_LC ## _iterator__advance; \
(P)->cb.seek = NAME_LC ## _iterator__seek; \
(P)->cb.reset = NAME_LC ## _iterator__reset; \
(P)->cb.free = NAME_LC ## _iterator__free; \
} while (0)
#define ITERATOR_BASE_INIT(P,NAME_LC,NAME_UC) do { \
(P) = git__calloc(1, sizeof(NAME_LC ## _iterator)); \
GITERR_CHECK_ALLOC(P); \
(P)->base.type = GIT_ITERATOR_TYPE_ ## NAME_UC; \
(P)->base.cb = &(P)->cb; \
ITERATOR_SET_CB(P,NAME_LC); \
(P)->base.start = start ? git__strdup(start) : NULL; \
(P)->base.end = end ? git__strdup(end) : NULL; \
if ((start && !(P)->base.start) || (end && !(P)->base.end)) { \
git__free(P); return -1; } \
(P)->base.prefixcomp = git__prefixcmp; \
} while (0)
static int iterator__reset_range(
git_iterator *iter, const char *start, const char *end)
{
if (start) {
if (iter->start)
git__free(iter->start);
iter->start = git__strdup(start);
GITERR_CHECK_ALLOC(iter->start);
}
if (end) {
if (iter->end)
git__free(iter->end);
iter->end = git__strdup(end);
GITERR_CHECK_ALLOC(iter->end);
}
return 0;
}
static int iterator_update_ignore_case(
git_iterator *iter,
git_iterator_flag_t flags)
{
int error = 0, ignore_case = -1;
if ((flags & GIT_ITERATOR_IGNORE_CASE) != 0)
ignore_case = true;
else if ((flags & GIT_ITERATOR_DONT_IGNORE_CASE) != 0)
ignore_case = false;
else {
git_index *index;
if (!(error = git_repository_index__weakptr(&index, iter->repo)))
ignore_case = (index->ignore_case != false);
}
if (ignore_case > 0)
iter->flags = (iter->flags | GIT_ITERATOR_IGNORE_CASE);
else if (ignore_case == 0)
iter->flags = (iter->flags & ~GIT_ITERATOR_IGNORE_CASE);
iter->prefixcomp = ((iter->flags & GIT_ITERATOR_IGNORE_CASE) != 0) ?
git__prefixcmp_icase : git__prefixcmp;
return error;
}
static int empty_iterator__no_item(
git_iterator *iter, const git_index_entry **entry)
{
GIT_UNUSED(iter);
*entry = NULL;
return 0;
}
static int empty_iterator__at_end(git_iterator *iter)
{
GIT_UNUSED(iter);
return 1;
}
static int empty_iterator__reset(
git_iterator *iter, const char *start, const char *end)
{
GIT_UNUSED(iter); GIT_UNUSED(start); GIT_UNUSED(end);
return 0;
}
static int empty_iterator__seek(git_iterator *iter, const char *prefix)
{
GIT_UNUSED(iter); GIT_UNUSED(prefix);
return -1;
}
static void empty_iterator__free(git_iterator *iter)
{
GIT_UNUSED(iter);
}
typedef struct {
git_iterator base;
git_iterator_callbacks cb;
} empty_iterator;
int git_iterator_for_nothing(git_iterator **iter, git_iterator_flag_t flags)
{
empty_iterator *i = git__calloc(1, sizeof(empty_iterator));
GITERR_CHECK_ALLOC(i);
i->base.type = GIT_ITERATOR_TYPE_EMPTY;
i->base.cb = &i->cb;
i->base.flags = flags;
i->cb.current = empty_iterator__no_item;
i->cb.at_end = empty_iterator__at_end;
i->cb.advance = empty_iterator__no_item;
i->cb.seek = empty_iterator__seek;
i->cb.reset = empty_iterator__reset;
i->cb.free = empty_iterator__free;
*iter = (git_iterator *)i;
return 0;
}
typedef struct tree_iterator_frame tree_iterator_frame;
struct tree_iterator_frame {
tree_iterator_frame *next, *prev;
git_tree *tree;
char *start;
size_t startlen;
size_t index;
void **icase_map;
void *icase_data[GIT_FLEX_ARRAY];
};
typedef struct {
git_iterator base;
git_iterator_callbacks cb;
tree_iterator_frame *stack, *tail;
git_index_entry entry;
git_buf path;
bool path_has_filename;
} tree_iterator;
GIT_INLINE(const git_tree_entry *)tree_iterator__tree_entry(tree_iterator *ti)
{
tree_iterator_frame *tf = ti->stack;
if (tf->index >= git_tree_entrycount(tf->tree))
return NULL;
return git_tree_entry_byindex(
tf->tree, tf->icase_map ? (size_t)tf->icase_map[tf->index] : tf->index);
}
static char *tree_iterator__current_filename(
tree_iterator *ti, const git_tree_entry *te)
{
if (!ti->path_has_filename) {
if (git_buf_joinpath(&ti->path, ti->path.ptr, te->filename) < 0)
return NULL;
ti->path_has_filename = true;
}
return ti->path.ptr;
}
static void tree_iterator__free_frame(tree_iterator_frame *tf)
{
if (!tf)
return;
git_tree_free(tf->tree);
tf->tree = NULL;
git__free(tf);
}
static bool tree_iterator__pop_frame(tree_iterator *ti)
{
tree_iterator_frame *tf = ti->stack;
/* don't free the initial tree/frame */
if (!tf->next)
return false;
ti->stack = tf->next;
ti->stack->prev = NULL;
tree_iterator__free_frame(tf);
return true;
}
static int tree_iterator__to_end(tree_iterator *ti)
{
while (tree_iterator__pop_frame(ti)) /* pop all */;
ti->stack->index = git_tree_entrycount(ti->stack->tree);
return 0;
}
static int tree_iterator__current(
git_iterator *self, const git_index_entry **entry)
{
tree_iterator *ti = (tree_iterator *)self;
const git_tree_entry *te = tree_iterator__tree_entry(ti);
if (entry)
*entry = NULL;
if (te == NULL)
return 0;
ti->entry.mode = te->attr;
git_oid_cpy(&ti->entry.oid, &te->oid);
ti->entry.path = tree_iterator__current_filename(ti, te);
if (ti->entry.path == NULL)
return -1;
if (ti->base.end && ti->base.prefixcomp(ti->entry.path, ti->base.end) > 0)
return tree_iterator__to_end(ti);
if (entry)
*entry = &ti->entry;
return 0;
}
static int tree_iterator__at_end(git_iterator *self)
{
return (tree_iterator__tree_entry((tree_iterator *)self) == NULL);
}
static int tree_iterator__icase_map_cmp(const void *a, const void *b, void *data)
{
git_tree *tree = data;
const git_tree_entry *te1 = git_tree_entry_byindex(tree, (size_t)a);
const git_tree_entry *te2 = git_tree_entry_byindex(tree, (size_t)b);
return te1 ? (te2 ? git_tree_entry_icmp(te1, te2) : 1) : -1;
}
static int tree_iterator__frame_start_icmp(const void *key, const void *element)
{
const tree_iterator_frame *tf = (const tree_iterator_frame *)key;
const git_tree_entry *te = git_tree_entry_byindex(tf->tree, (size_t)element);
return memcmp(tf->start, te->filename, min(tf->startlen, te->filename_len));
}
static void tree_iterator__frame_seek_start(tree_iterator_frame *tf)
{
if (!tf->start)
tf->index = 0;
else if (!tf->icase_map)
tf->index = git_tree__prefix_position(tf->tree, tf->start);
else {
if (!git__bsearch(
tf->icase_map, git_tree_entrycount(tf->tree),
tf, tree_iterator__frame_start_icmp, &tf->index))
{
while (tf->index > 0) {
/* move back while previous entry is still prefixed */
if (tree_iterator__frame_start_icmp(
tf, (const void *)(tf->index - 1)))
break;
tf->index--;
}
}
}
}
static tree_iterator_frame *tree_iterator__alloc_frame(
tree_iterator *ti, git_tree *tree, char *start)
{
size_t i, max_i = git_tree_entrycount(tree);
tree_iterator_frame *tf =
git__calloc(1, sizeof(tree_iterator_frame) + max_i * sizeof(void *));
if (!tf)
return NULL;
tf->tree = tree;
if (start && *start) {
tf->start = start;
tf->startlen = strlen(start);
}
if (!max_i)
return tf;
if ((ti->base.flags & GIT_ITERATOR_IGNORE_CASE) != 0) {
tf->icase_map = tf->icase_data;
for (i = 0; i < max_i; ++i)
tf->icase_map[i] = (void *)i;
git__tsort_r(
tf->icase_map, max_i, tree_iterator__icase_map_cmp, tf->tree);
}
tree_iterator__frame_seek_start(tf);
return tf;
}
static int tree_iterator__expand_tree(tree_iterator *ti)
{
int error;
git_tree *subtree;
const git_tree_entry *te = tree_iterator__tree_entry(ti);
tree_iterator_frame *tf;
char *relpath;
while (te != NULL && git_tree_entry__is_tree(te)) {
if (git_buf_joinpath(&ti->path, ti->path.ptr, te->filename) < 0)
return -1;
/* check that we have not passed the range end */
if (ti->base.end != NULL &&
ti->base.prefixcomp(ti->path.ptr, ti->base.end) > 0)
return tree_iterator__to_end(ti);
if ((error = git_tree_lookup(&subtree, ti->base.repo, &te->oid)) < 0)
return error;
relpath = NULL;
/* apply range start to new frame if relevant */
if (ti->stack->start &&
ti->base.prefixcomp(ti->stack->start, te->filename) == 0)
{
if (ti->stack->start[te->filename_len] == '/')
relpath = ti->stack->start + te->filename_len + 1;
}
if ((tf = tree_iterator__alloc_frame(ti, subtree, relpath)) == NULL)
return -1;
tf->next = ti->stack;
ti->stack = tf;
tf->next->prev = tf;
te = tree_iterator__tree_entry(ti);
}
return 0;
}
static int tree_iterator__advance(
git_iterator *self, const git_index_entry **entry)
{
int error = 0;
tree_iterator *ti = (tree_iterator *)self;
const git_tree_entry *te = NULL;
if (entry != NULL)
*entry = NULL;
if (ti->path_has_filename) {
git_buf_rtruncate_at_char(&ti->path, '/');
ti->path_has_filename = false;
}
while (1) {
++ti->stack->index;
if ((te = tree_iterator__tree_entry(ti)) != NULL)
break;
if (!tree_iterator__pop_frame(ti))
break; /* no frames left to pop */
git_buf_rtruncate_at_char(&ti->path, '/');
}
if (te && git_tree_entry__is_tree(te))
error = tree_iterator__expand_tree(ti);
if (!error)
error = tree_iterator__current(self, entry);
return error;
}
static int tree_iterator__seek(git_iterator *self, const char *prefix)
{
GIT_UNUSED(self);
GIT_UNUSED(prefix);
/* pop stack until matches prefix */
/* seek item in current frame matching prefix */
/* push stack which matches prefix */
return -1;
}
static void tree_iterator__free(git_iterator *self)
{
tree_iterator *ti = (tree_iterator *)self;
while (tree_iterator__pop_frame(ti)) /* pop all */;
tree_iterator__free_frame(ti->stack);
ti->stack = ti->tail = NULL;
git_buf_free(&ti->path);
}
static int tree_iterator__reset(
git_iterator *self, const char *start, const char *end)
{
tree_iterator *ti = (tree_iterator *)self;
while (tree_iterator__pop_frame(ti)) /* pop all */;
if (iterator__reset_range(self, start, end) < 0)
return -1;
/* reset start position */
tree_iterator__frame_seek_start(ti->stack);
git_buf_clear(&ti->path);
ti->path_has_filename = false;
return tree_iterator__expand_tree(ti);
}
int git_iterator_for_tree_range(
git_iterator **iter,
git_tree *tree,
git_iterator_flag_t flags,
const char *start,
const char *end)
{
int error;
tree_iterator *ti;
if (tree == NULL)
return git_iterator_for_nothing(iter, flags);
if ((error = git_tree__dup(&tree, tree)) < 0)
return error;
ITERATOR_BASE_INIT(ti, tree, TREE);
ti->base.repo = git_tree_owner(tree);
if ((error = iterator_update_ignore_case((git_iterator *)ti, flags)) < 0)
goto fail;
ti->stack = ti->tail = tree_iterator__alloc_frame(ti, tree, ti->base.start);
if ((error = tree_iterator__expand_tree(ti)) < 0)
goto fail;
*iter = (git_iterator *)ti;
return 0;
fail:
git_iterator_free((git_iterator *)ti);
return error;
}
typedef struct {
git_iterator base;
git_iterator_callbacks cb;
git_index *index;
size_t current;
} index_iterator;
static int index_iterator__current(
git_iterator *self, const git_index_entry **entry)
{
index_iterator *ii = (index_iterator *)self;
const git_index_entry *ie = git_index_get_byindex(ii->index, ii->current);
if (entry)
*entry = ie;
return 0;
}
static int index_iterator__at_end(git_iterator *self)
{
index_iterator *ii = (index_iterator *)self;
return (ii->current >= git_index_entrycount(ii->index));
}
static void index_iterator__skip_conflicts(
index_iterator *ii)
{
size_t entrycount = git_index_entrycount(ii->index);
const git_index_entry *ie;
while (ii->current < entrycount) {
ie = git_index_get_byindex(ii->index, ii->current);
if (ie == NULL ||
(ii->base.end != NULL &&
ii->base.prefixcomp(ie->path, ii->base.end) > 0)) {
ii->current = entrycount;
break;
}
if (git_index_entry_stage(ie) == 0)
break;
ii->current++;
}
}
static int index_iterator__advance(
git_iterator *self, const git_index_entry **entry)
{
index_iterator *ii = (index_iterator *)self;
if (ii->current < git_index_entrycount(ii->index))
ii->current++;
index_iterator__skip_conflicts(ii);
return index_iterator__current(self, entry);
}
static int index_iterator__seek(git_iterator *self, const char *prefix)
{
GIT_UNUSED(self);
GIT_UNUSED(prefix);
/* find last item before prefix */
return -1;
}
static int index_iterator__reset(
git_iterator *self, const char *start, const char *end)
{
index_iterator *ii = (index_iterator *)self;
if (iterator__reset_range(self, start, end) < 0)
return -1;
ii->current = ii->base.start ?
git_index__prefix_position(ii->index, ii->base.start) : 0;
index_iterator__skip_conflicts(ii);
return 0;
}
static void index_iterator__free(git_iterator *self)
{
index_iterator *ii = (index_iterator *)self;
git_index_free(ii->index);
ii->index = NULL;
}
int git_iterator_for_index_range(
git_iterator **iter,
git_index *index,
git_iterator_flag_t flags,
const char *start,
const char *end)
{
index_iterator *ii;
GIT_UNUSED(flags);
ITERATOR_BASE_INIT(ii, index, INDEX);
ii->base.repo = git_index_owner(index);
if (index->ignore_case) {
ii->base.flags |= GIT_ITERATOR_IGNORE_CASE;
ii->base.prefixcomp = git__prefixcmp_icase;
}
ii->index = index;
GIT_REFCOUNT_INC(index);
index_iterator__reset((git_iterator *)ii, NULL, NULL);
*iter = (git_iterator *)ii;
return 0;
}
typedef struct workdir_iterator_frame workdir_iterator_frame;
struct workdir_iterator_frame {
workdir_iterator_frame *next;
git_vector entries;
size_t index;
};
typedef struct {
git_iterator base;
git_iterator_callbacks cb;
workdir_iterator_frame *stack;
int (*entrycmp)(const void *pfx, const void *item);
git_ignores ignores;
git_index_entry entry;
git_buf path;
size_t root_len;
int is_ignored;
} workdir_iterator;
GIT_INLINE(bool) path_is_dotgit(const git_path_with_stat *ps)
{
if (!ps)
return false;
else {
const char *path = ps->path;
size_t len = ps->path_len;
if (len < 4)
return false;
if (path[len - 1] == '/')
len--;
if (tolower(path[len - 1]) != 't' ||
tolower(path[len - 2]) != 'i' ||
tolower(path[len - 3]) != 'g' ||
tolower(path[len - 4]) != '.')
return false;
return (len == 4 || path[len - 5] == '/');
}
}
static workdir_iterator_frame *workdir_iterator__alloc_frame(
workdir_iterator *wi)
{
workdir_iterator_frame *wf = git__calloc(1, sizeof(workdir_iterator_frame));
git_vector_cmp entry_compare = CASESELECT(
(wi->base.flags & GIT_ITERATOR_IGNORE_CASE) != 0,
git_path_with_stat_cmp_icase, git_path_with_stat_cmp);
if (wf == NULL)
return NULL;
if (git_vector_init(&wf->entries, 0, entry_compare) != 0) {
git__free(wf);
return NULL;
}
return wf;
}
static void workdir_iterator__free_frame(workdir_iterator_frame *wf)
{
unsigned int i;
git_path_with_stat *path;
git_vector_foreach(&wf->entries, i, path)
git__free(path);
git_vector_free(&wf->entries);
git__free(wf);
}
static int workdir_iterator__update_entry(workdir_iterator *wi);
static int workdir_iterator__entry_cmp_case(const void *pfx, const void *item)
{
const git_path_with_stat *ps = item;
return git__prefixcmp((const char *)pfx, ps->path);
}
static int workdir_iterator__entry_cmp_icase(const void *pfx, const void *item)
{
const git_path_with_stat *ps = item;
return git__prefixcmp_icase((const char *)pfx, ps->path);
}
static void workdir_iterator__seek_frame_start(
workdir_iterator *wi, workdir_iterator_frame *wf)
{
if (!wf)
return;
if (wi->base.start)
git_vector_bsearch3(
&wf->index, &wf->entries, wi->entrycmp, wi->base.start);
else
wf->index = 0;
if (path_is_dotgit(git_vector_get(&wf->entries, wf->index)))
wf->index++;
}
static int workdir_iterator__expand_dir(workdir_iterator *wi)
{
int error;
workdir_iterator_frame *wf = workdir_iterator__alloc_frame(wi);
GITERR_CHECK_ALLOC(wf);
error = git_path_dirload_with_stat(
wi->path.ptr, wi->root_len,
(wi->base.flags & GIT_ITERATOR_IGNORE_CASE) != 0,
wi->base.start, wi->base.end, &wf->entries);
if (error < 0 || wf->entries.length == 0) {
workdir_iterator__free_frame(wf);
return GIT_ENOTFOUND;
}
workdir_iterator__seek_frame_start(wi, wf);
/* only push new ignores if this is not top level directory */
if (wi->stack != NULL) {
ssize_t slash_pos = git_buf_rfind_next(&wi->path, '/');
(void)git_ignore__push_dir(&wi->ignores, &wi->path.ptr[slash_pos + 1]);
}
wf->next = wi->stack;
wi->stack = wf;
return workdir_iterator__update_entry(wi);
}
static int workdir_iterator__current(
git_iterator *self, const git_index_entry **entry)
{
workdir_iterator *wi = (workdir_iterator *)self;
*entry = (wi->entry.path == NULL) ? NULL : &wi->entry;
return 0;
}
static int workdir_iterator__at_end(git_iterator *self)
{
return (((workdir_iterator *)self)->entry.path == NULL);
}
static int workdir_iterator__advance(
git_iterator *self, const git_index_entry **entry)
{
int error;
workdir_iterator *wi = (workdir_iterator *)self;
workdir_iterator_frame *wf;
git_path_with_stat *next;
if (entry != NULL)
*entry = NULL;
if (wi->entry.path == NULL)
return 0;
while (1) {
wf = wi->stack;
next = git_vector_get(&wf->entries, ++wf->index);
if (next != NULL) {
/* match git's behavior of ignoring anything named ".git" */
if (path_is_dotgit(next))
continue;
/* else found a good entry */
break;
}
/* pop stack if anything is left to pop */
if (!wf->next) {
memset(&wi->entry, 0, sizeof(wi->entry));
return 0;
}
wi->stack = wf->next;
workdir_iterator__free_frame(wf);
git_ignore__pop_dir(&wi->ignores);
}
error = workdir_iterator__update_entry(wi);
if (!error && entry != NULL)
error = workdir_iterator__current(self, entry);
return error;
}
static int workdir_iterator__seek(git_iterator *self, const char *prefix)
{
GIT_UNUSED(self);
GIT_UNUSED(prefix);
/* pop stack until matching prefix */
/* find prefix item in current frame */
/* push subdirectories as deep as possible while matching */
return 0;
}
static int workdir_iterator__reset(
git_iterator *self, const char *start, const char *end)
{
workdir_iterator *wi = (workdir_iterator *)self;
while (wi->stack != NULL && wi->stack->next != NULL) {
workdir_iterator_frame *wf = wi->stack;
wi->stack = wf->next;
workdir_iterator__free_frame(wf);
git_ignore__pop_dir(&wi->ignores);
}
if (iterator__reset_range(self, start, end) < 0)
return -1;
workdir_iterator__seek_frame_start(wi, wi->stack);
return workdir_iterator__update_entry(wi);
}
static void workdir_iterator__free(git_iterator *self)
{
workdir_iterator *wi = (workdir_iterator *)self;
while (wi->stack != NULL) {
workdir_iterator_frame *wf = wi->stack;
wi->stack = wf->next;
workdir_iterator__free_frame(wf);
}
git_ignore__free(&wi->ignores);
git_buf_free(&wi->path);
}
static int workdir_iterator__update_entry(workdir_iterator *wi)
{
git_path_with_stat *ps =
git_vector_get(&wi->stack->entries, wi->stack->index);
git_buf_truncate(&wi->path, wi->root_len);
memset(&wi->entry, 0, sizeof(wi->entry));
if (!ps)
return 0;
if (git_buf_put(&wi->path, ps->path, ps->path_len) < 0)
return -1;
if (wi->base.end &&
wi->base.prefixcomp(wi->path.ptr + wi->root_len, wi->base.end) > 0)
return 0;
wi->entry.path = ps->path;
/* skip over .git entries */
if (path_is_dotgit(ps))
return workdir_iterator__advance((git_iterator *)wi, NULL);
wi->is_ignored = -1;
git_index_entry__init_from_stat(&wi->entry, &ps->st);
/* need different mode here to keep directories during iteration */
wi->entry.mode = git_futils_canonical_mode(ps->st.st_mode);
/* if this is a file type we don't handle, treat as ignored */
if (wi->entry.mode == 0) {
wi->is_ignored = 1;
return 0;
}
/* detect submodules */
if (S_ISDIR(wi->entry.mode)) {
int res = git_submodule_lookup(NULL, wi->base.repo, wi->entry.path);
bool is_submodule = (res == 0);
if (res == GIT_ENOTFOUND)
giterr_clear();
/* if submodule, mark as GITLINK and remove trailing slash */
if (is_submodule) {
size_t len = strlen(wi->entry.path);
assert(wi->entry.path[len - 1] == '/');
wi->entry.path[len - 1] = '\0';
wi->entry.mode = S_IFGITLINK;
}
}
return 0;
}
int git_iterator_for_workdir_range(
git_iterator **iter,
git_repository *repo,
git_iterator_flag_t flags,
const char *start,
const char *end)
{
int error;
workdir_iterator *wi;
assert(iter && repo);
if ((error = git_repository__ensure_not_bare(
repo, "scan working directory")) < 0)
return error;
ITERATOR_BASE_INIT(wi, workdir, WORKDIR);
wi->base.repo = repo;
if ((error = iterator_update_ignore_case((git_iterator *)wi, flags)) < 0)
goto fail;
if (git_buf_sets(&wi->path, git_repository_workdir(repo)) < 0 ||
git_path_to_dir(&wi->path) < 0 ||
git_ignore__for_path(repo, "", &wi->ignores) < 0)
{
git__free(wi);
return -1;
}
wi->root_len = wi->path.size;
wi->entrycmp = (wi->base.flags & GIT_ITERATOR_IGNORE_CASE) != 0 ?
workdir_iterator__entry_cmp_icase : workdir_iterator__entry_cmp_case;
if ((error = workdir_iterator__expand_dir(wi)) < 0) {
if (error != GIT_ENOTFOUND)
goto fail;
giterr_clear();
}
*iter = (git_iterator *)wi;
return 0;
fail:
git_iterator_free((git_iterator *)wi);
return error;
}
typedef struct {
/* replacement callbacks */
git_iterator_callbacks cb;
/* original iterator values */
git_iterator_callbacks *orig;
git_iterator_type_t orig_type;
/* spoolandsort data */
git_vector entries;
git_pool entry_pool;
git_pool string_pool;
size_t position;
} spoolandsort_callbacks;
static int spoolandsort_iterator__current(
git_iterator *self, const git_index_entry **entry)
{
spoolandsort_callbacks *scb = (spoolandsort_callbacks *)self->cb;
*entry = (const git_index_entry *)
git_vector_get(&scb->entries, scb->position);
return 0;
}
static int spoolandsort_iterator__at_end(git_iterator *self)
{
spoolandsort_callbacks *scb = (spoolandsort_callbacks *)self->cb;
return 0 == scb->entries.length || scb->entries.length - 1 <= scb->position;
}
static int spoolandsort_iterator__advance(
git_iterator *self, const git_index_entry **entry)
{
spoolandsort_callbacks *scb = (spoolandsort_callbacks *)self->cb;
*entry = (const git_index_entry *)
git_vector_get(&scb->entries, ++scb->position);
return 0;
}
static int spoolandsort_iterator__seek(git_iterator *self, const char *prefix)
{
GIT_UNUSED(self);
GIT_UNUSED(prefix);
return -1;
}
static int spoolandsort_iterator__reset(
git_iterator *self, const char *start, const char *end)
{
spoolandsort_callbacks *scb = (spoolandsort_callbacks *)self->cb;
GIT_UNUSED(start); GIT_UNUSED(end);
scb->position = 0;
return 0;
}
static void spoolandsort_iterator__free_callbacks(spoolandsort_callbacks *scb)
{
git_pool_clear(&scb->string_pool);
git_pool_clear(&scb->entry_pool);
git_vector_free(&scb->entries);
git__free(scb);
}
void git_iterator_spoolandsort_pop(git_iterator *self)
{
spoolandsort_callbacks *scb = (spoolandsort_callbacks *)self->cb;
if (self->type != GIT_ITERATOR_TYPE_SPOOLANDSORT)
return;
self->cb = scb->orig;
self->type = scb->orig_type;
self->flags ^= GIT_ITERATOR_IGNORE_CASE;
spoolandsort_iterator__free_callbacks(scb);
}
static void spoolandsort_iterator__free(git_iterator *self)
{
git_iterator_spoolandsort_pop(self);
self->cb->free(self);
}
int git_iterator_spoolandsort_push(git_iterator *iter, bool ignore_case)
{
const git_index_entry *item;
spoolandsort_callbacks *scb;
int (*entrycomp)(const void *a, const void *b);
if (((iter->flags & GIT_ITERATOR_IGNORE_CASE) != 0) == (ignore_case != 0))
return 0;
if (iter->type == GIT_ITERATOR_TYPE_EMPTY) {
iter->flags = (iter->flags ^ GIT_ITERATOR_IGNORE_CASE);
return 0;
}
scb = git__calloc(1, sizeof(spoolandsort_callbacks));
GITERR_CHECK_ALLOC(scb);
ITERATOR_SET_CB(scb,spoolandsort);
scb->orig = iter->cb;
scb->orig_type = iter->type;
scb->position = 0;
entrycomp = ignore_case ? git_index_entry__cmp_icase : git_index_entry__cmp;
if (git_vector_init(&scb->entries, 16, entrycomp) < 0 ||
git_pool_init(&scb->entry_pool, sizeof(git_index_entry), 0) < 0 ||
git_pool_init(&scb->string_pool, 1, 0) < 0 ||
git_iterator_current(iter, &item) < 0)
goto fail;
while (item) {
git_index_entry *clone = git_pool_malloc(&scb->entry_pool, 1);
if (!clone)
goto fail;
memcpy(clone, item, sizeof(git_index_entry));
if (item->path) {
clone->path = git_pool_strdup(&scb->string_pool, item->path);
if (!clone->path)
goto fail;
}
if (git_vector_insert(&scb->entries, clone) < 0)
goto fail;
if (git_iterator_advance(iter, &item) < 0)
goto fail;
}
git_vector_sort(&scb->entries);
iter->cb = (git_iterator_callbacks *)scb;
iter->type = GIT_ITERATOR_TYPE_SPOOLANDSORT;
iter->flags ^= GIT_ITERATOR_IGNORE_CASE;
return 0;
fail:
spoolandsort_iterator__free_callbacks(scb);
return -1;
}
void git_iterator_free(git_iterator *iter)
{
if (iter == NULL)
return;
iter->cb->free(iter);
git__free(iter->start);
git__free(iter->end);
memset(iter, 0, sizeof(*iter));
git__free(iter);
}
git_index *git_iterator_index_get_index(git_iterator *iter)
{
if (iter->type == GIT_ITERATOR_TYPE_INDEX)
return ((index_iterator *)iter)->index;
if (iter->type == GIT_ITERATOR_TYPE_SPOOLANDSORT &&
((spoolandsort_callbacks *)iter->cb)->orig_type == GIT_ITERATOR_TYPE_INDEX)
return ((index_iterator *)iter)->index;
return NULL;
}
git_iterator_type_t git_iterator_inner_type(git_iterator *iter)
{
if (iter->type == GIT_ITERATOR_TYPE_SPOOLANDSORT)
return ((spoolandsort_callbacks *)iter->cb)->orig_type;
return iter->type;
}
int git_iterator_current_tree_entry(
git_iterator *iter, const git_tree_entry **tree_entry)
{
*tree_entry = (iter->type != GIT_ITERATOR_TYPE_TREE) ? NULL :
tree_iterator__tree_entry((tree_iterator *)iter);
return 0;
}
int git_iterator_current_parent_tree(
git_iterator *iter,
const char *parent_path,
const git_tree **tree_ptr)
{
tree_iterator *ti = (tree_iterator *)iter;
tree_iterator_frame *tf;
const char *scan = parent_path;
int (*strncomp)(const char *a, const char *b, size_t sz);
if (iter->type != GIT_ITERATOR_TYPE_TREE || ti->stack == NULL)
goto notfound;
strncomp = ((iter->flags & GIT_ITERATOR_IGNORE_CASE) != 0) ?
git__strncasecmp : git__strncmp;
for (tf = ti->tail; tf != NULL; tf = tf->prev) {
const git_tree_entry *te;
if (!*scan) {
*tree_ptr = tf->tree;
return 0;
}
te = git_tree_entry_byindex(tf->tree,
tf->icase_map ? (size_t)tf->icase_map[tf->index] : tf->index);
if (strncomp(scan, te->filename, te->filename_len) != 0)
goto notfound;
scan += te->filename_len;
if (*scan) {
if (*scan != '/')
goto notfound;
scan++;
}
}
notfound:
*tree_ptr = NULL;
return 0;
}
int git_iterator_current_is_ignored(git_iterator *iter)
{
workdir_iterator *wi = (workdir_iterator *)iter;
if (iter->type != GIT_ITERATOR_TYPE_WORKDIR)
return 0;
if (wi->is_ignored != -1)
return wi->is_ignored;
if (git_ignore__lookup(&wi->ignores, wi->entry.path, &wi->is_ignored) < 0)
wi->is_ignored = 1;
return wi->is_ignored;
}
int git_iterator_advance_into_directory(
git_iterator *iter, const git_index_entry **entry)
{
workdir_iterator *wi = (workdir_iterator *)iter;
if (iter->type == GIT_ITERATOR_TYPE_WORKDIR &&
wi->entry.path &&
(wi->entry.mode == GIT_FILEMODE_TREE ||
wi->entry.mode == GIT_FILEMODE_COMMIT))
{
if (workdir_iterator__expand_dir(wi) < 0)
/* if error loading or if empty, skip the directory. */
return workdir_iterator__advance(iter, entry);
}
return entry ? git_iterator_current(iter, entry) : 0;
}
int git_iterator_cmp(git_iterator *iter, const char *path_prefix)
{
const git_index_entry *entry;
/* a "done" iterator is after every prefix */
if (git_iterator_current(iter, &entry) < 0 ||
entry == NULL)
return 1;
/* a NULL prefix is after any valid iterator */
if (!path_prefix)
return -1;
return iter->prefixcomp(entry->path, path_prefix);
}
int git_iterator_current_workdir_path(git_iterator *iter, git_buf **path)
{
workdir_iterator *wi = (workdir_iterator *)iter;
if (iter->type != GIT_ITERATOR_TYPE_WORKDIR || !wi->entry.path)
*path = NULL;
else
*path = &wi->path;
return 0;
}
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