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#include "ignore.h"
#include "path.h"
#define GIT_IGNORE_INTERNAL "[internal]exclude"
#define GIT_IGNORE_FILE_INREPO "info/exclude"
#define GIT_IGNORE_FILE ".gitignore"
static int load_ignore_file(
git_repository *repo, const char *path, git_attr_file *ignores)
{
int error;
git_buf fbuf = GIT_BUF_INIT;
git_attr_fnmatch *match = NULL;
const char *scan = NULL;
char *context = NULL;
if (ignores->path == NULL) {
if (git_attr_file__set_path(repo, path, ignores) < 0)
return -1;
}
if (git__suffixcmp(ignores->path, GIT_IGNORE_FILE) == 0) {
context = git__strndup(ignores->path,
strlen(ignores->path) - strlen(GIT_IGNORE_FILE));
GITERR_CHECK_ALLOC(context);
}
error = git_futils_readbuffer(&fbuf, path);
scan = fbuf.ptr;
while (!error && *scan) {
if (!match) {
match = git__calloc(1, sizeof(*match));
GITERR_CHECK_ALLOC(match);
}
if (!(error = git_attr_fnmatch__parse(
match, ignores->pool, context, &scan)))
{
match->flags = match->flags | GIT_ATTR_FNMATCH_IGNORE;
scan = git__next_line(scan);
error = git_vector_insert(&ignores->rules, match);
}
if (error != 0) {
git__free(match->pattern);
match->pattern = NULL;
if (error == GIT_ENOTFOUND)
error = 0;
} else {
match = NULL; /* vector now "owns" the match */
}
}
git_buf_free(&fbuf);
git__free(match);
git__free(context);
return error;
}
#define push_ignore(R,S,B,F) \
git_attr_cache__push_file((R),(S),(B),(F),load_ignore_file)
static int push_one_ignore(void *ref, git_buf *path)
{
git_ignores *ign = (git_ignores *)ref;
return push_ignore(ign->repo, &ign->ign_path, path->ptr, GIT_IGNORE_FILE);
}
int git_ignore__for_path(git_repository *repo, const char *path, git_ignores *ignores)
{
int error = 0;
const char *workdir = git_repository_workdir(repo);
assert(ignores);
ignores->repo = repo;
git_buf_init(&ignores->dir, 0);
ignores->ign_internal = NULL;
if ((error = git_vector_init(&ignores->ign_path, 8, NULL)) < 0 ||
(error = git_vector_init(&ignores->ign_global, 2, NULL)) < 0 ||
(error = git_attr_cache__init(repo)) < 0)
goto cleanup;
/* translate path into directory within workdir */
if ((error = git_path_find_dir(&ignores->dir, path, workdir)) < 0)
goto cleanup;
/* set up internals */
error = git_attr_cache__lookup_or_create_file(
repo, GIT_IGNORE_INTERNAL, NULL, NULL, &ignores->ign_internal);
if (error < 0)
goto cleanup;
/* load .gitignore up the path */
error = git_path_walk_up(&ignores->dir, workdir, push_one_ignore, ignores);
if (error < 0)
goto cleanup;
/* load .git/info/exclude */
error = push_ignore(repo, &ignores->ign_global,
git_repository_path(repo), GIT_IGNORE_FILE_INREPO);
if (error < 0)
goto cleanup;
/* load core.excludesfile */
if (git_repository_attr_cache(repo)->cfg_excl_file != NULL)
error = push_ignore(repo, &ignores->ign_global, NULL,
git_repository_attr_cache(repo)->cfg_excl_file);
cleanup:
if (error < 0)
git_ignore__free(ignores);
return error;
}
int git_ignore__push_dir(git_ignores *ign, const char *dir)
{
if (git_buf_joinpath(&ign->dir, ign->dir.ptr, dir) < 0)
return -1;
else
return push_ignore(
ign->repo, &ign->ign_path, ign->dir.ptr, GIT_IGNORE_FILE);
}
int git_ignore__pop_dir(git_ignores *ign)
{
if (ign->ign_path.length > 0) {
git_attr_file *file = git_vector_last(&ign->ign_path);
if (git__suffixcmp(ign->dir.ptr, file->path) == 0)
git_vector_pop(&ign->ign_path);
git_buf_rtruncate_at_char(&ign->dir, '/');
}
return 0;
}
void git_ignore__free(git_ignores *ignores)
{
/* don't need to free ignores->ign_internal since it is in cache */
git_vector_free(&ignores->ign_path);
git_vector_free(&ignores->ign_global);
git_buf_free(&ignores->dir);
}
static bool ignore_lookup_in_rules(
git_vector *rules, git_attr_path *path, int *ignored)
{
unsigned int j;
git_attr_fnmatch *match;
git_vector_rforeach(rules, j, match) {
if (git_attr_fnmatch__match(match, path)) {
*ignored = ((match->flags & GIT_ATTR_FNMATCH_NEGATIVE) == 0);
return true;
}
}
return false;
}
int git_ignore__lookup(git_ignores *ignores, const char *pathname, int *ignored)
{
unsigned int i;
git_attr_file *file;
git_attr_path path;
if (git_attr_path__init(
&path, pathname, git_repository_workdir(ignores->repo)) < 0)
return -1;
/* first process builtins - success means path was found */
if (ignore_lookup_in_rules(
&ignores->ign_internal->rules, &path, ignored))
return 0;
/* next process files in the path */
git_vector_foreach(&ignores->ign_path, i, file) {
if (ignore_lookup_in_rules(&file->rules, &path, ignored))
return 0;
}
/* last process global ignores */
git_vector_foreach(&ignores->ign_global, i, file) {
if (ignore_lookup_in_rules(&file->rules, &path, ignored))
return 0;
}
*ignored = 0;
return 0;
}
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