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index: Implement folder-file checks

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This commit is contained in:
Vicent Marti 2014-01-29 18:44:29 +01:00 committed by Edward Thomson
parent 53bec813a8
commit 1eefd35612
1 changed files with 50 additions and 52 deletions
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102
src/index.c
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@ -712,32 +712,29 @@ static git_index_entry *index_entry_dup(const git_index_entry *source_entry)
return entry;
}
#if 0
static int has_file_name(git_index *index,
const git_index_entry *entry, int pos, int ok_to_replace)
const git_index_entry *entry, size_t pos, int ok_to_replace)
{
int retval = 0;
int len = ce_namelen(ce);
int stage = ce_stage(ce);
const char *name = ce->name;
size_t len = strlen(entry->path);
int stage = GIT_IDXENTRY_STAGE(entry);
const char *name = entry->path;
while (pos < istate->cache_nr) {
struct cache_entry *p = istate->cache[pos++];
while (pos < index->entries.length) {
git_index_entry *p = index->entries.contents[pos++];
if (len >= ce_namelen(p))
if (len >= strlen(p->path))
break;
if (memcmp(name, p->name, len))
if (memcmp(name, p->path, len))
break;
if (ce_stage(p) != stage)
if (GIT_IDXENTRY_STAGE(p) != stage)
continue;
if (p->name[len] != '/')
continue;
if (p->ce_flags & CE_REMOVE)
if (p->path[len] != '/')
continue;
retval = -1;
if (!ok_to_replace)
break;
remove_index_entry_at(istate, --pos);
git_vector_remove(&index->entries, --pos);
}
return retval;
}
@ -750,67 +747,65 @@ static int has_dir_name(git_index *index,
const git_index_entry *entry, int ok_to_replace)
{
int retval = 0;
int stage = ce_stage(ce);
const char *name = ce->name;
const char *slash = name + ce_namelen(ce);
int stage = GIT_IDXENTRY_STAGE(entry);
const char *name = entry->path;
const char *slash = name + strlen(name);
for (;;) {
int len;
size_t len, position;
for (;;) {
if (*--slash == '/')
break;
if (slash <= ce->name)
if (slash <= entry->path)
return retval;
}
len = slash - name;
pos = index_name_stage_pos(istate, name, len, stage);
if (pos >= 0) {
/*
* Found one, but not so fast. This could
* be a marker that says "I was here, but
* I am being removed". Such an entry is
* not a part of the resulting tree, and
* it is Ok to have a directory at the same
* path.
*/
if (!(istate->cache[pos]->ce_flags & CE_REMOVE)) {
retval = -1;
if (!ok_to_replace)
break;
remove_index_entry_at(istate, pos);
continue;
}
if (git_index__find(&position, index, name, len, stage) == 0) {
retval = -1;
if (!ok_to_replace)
break;
git_vector_remove(&index->entries, position);
continue;
}
else
pos = -pos-1;
/*
* Trivial optimization: if we find an entry that
* already matches the sub-directory, then we know
* we're ok, and we can exit.
*/
while (pos < istate->cache_nr) {
struct cache_entry *p = istate->cache[pos];
if ((ce_namelen(p) <= len) ||
(p->name[len] != '/') ||
memcmp(p->name, name, len))
while (position < index->entries.length) {
git_index_entry *p = index->entries.contents[position];
if ((strlen(p->path) <= len) ||
(p->path[len] != '/') ||
memcmp(p->path, name, len))
break; /* not our subdirectory */
if (ce_stage(p) == stage && !(p->ce_flags & CE_REMOVE))
/*
* p is at the same stage as our entry, and
* is a subdirectory of what we are looking
* at, so we cannot have conflicts at our
* level or anything shorter.
*/
if (GIT_IDXENTRY_STAGE(p) == stage)
return retval;
pos++;
position++;
}
}
return retval;
}
#endif
static int check_file_directory_conflict(git_index *index,
git_index_entry *entry, size_t pos, int ok_to_replace)
{
int retval = has_file_name(index, entry, pos, ok_to_replace);
retval = retval + has_dir_name(index, entry, ok_to_replace);
if (retval) {
giterr_set(GITERR_INDEX, "'%s' appears as both a file an a directory", entry->path);
return -1;
}
return 0;
}
static int index_insert(git_index *index, git_index_entry *entry, int replace)
{
@ -838,6 +833,9 @@ static int index_insert(git_index *index, git_index_entry *entry, int replace)
entry->mode = index_merge_mode(index, *existing, entry->mode);
}
if (check_file_directory_conflict(index, entry, position, replace) < 0)
return -1;
/* if replacing is not requested or no existing entry exists, just
* insert entry at the end; the index is no longer sorted
*/