static int diff_file_content_load_workdir_file(
git_diff_file_content *fc, git_buf *path)
{
int error = 0;
git_vector filters = GIT_VECTOR_INIT;
git_buf raw = GIT_BUF_INIT, filtered = GIT_BUF_INIT;
git_file fd = git_futils_open_ro(git_buf_cstr(path));
if (fd < 0)
return fd;
if (!fc->file->size &&
!(fc->file->size = git_futils_filesize(fd)))
goto cleanup;
if (diff_file_content_binary_by_size(fc))
goto cleanup;
if ((error = git_filters_load(
&filters, fc->repo, fc->file->path, GIT_FILTER_TO_ODB)) < 0)
goto cleanup;
/* error >= is a filter count */
if (error == 0) {
if (!(error = git_futils_mmap_ro(
&fc->map, fd, 0, (size_t)fc->file->size)))
fc->flags |= GIT_DIFF_FLAG__UNMAP_DATA;
else /* fall through to try readbuffer below */
giterr_clear();
}
if (error != 0) {
error = git_futils_readbuffer_fd(&raw, fd, (size_t)fc->file->size);
if (error < 0)
goto cleanup;
if (!filters.length)
git_buf_swap(&filtered, &raw);
else
error = git_filters_apply(&filtered, &raw, &filters);
if (!error) {
fc->map.len = git_buf_len(&filtered);
fc->map.data = git_buf_detach(&filtered);
fc->flags |= GIT_DIFF_FLAG__FREE_DATA;
}
git_buf_free(&raw);
git_buf_free(&filtered);
}
cleanup:
git_filters_free(&filters);
p_close(fd);
return error;
}
static int expandPerCentF(git_buf *buf, const char *replaceWith)
{
ssize_t foundPercentage = git_buf_find(buf, '%');
if (foundPercentage) {
git_buf expanded = GIT_BUF_INIT;
const char *end = buf->ptr + buf->size;
const char *lastPercentage = buf->ptr;
const char *idx = buf->ptr + foundPercentage;
while (idx < end) {
if (*idx == '%') {
if (idx + 1 == end || (idx + 1 < end && *(idx + 1) == '%')) { // one '%' is at the end of the string OR "%%" is in the string
git_buf_putc(&expanded, '%');
++idx;
++idx;
lastPercentage = idx;
continue;
}
// now we know, that we're not at the end of the string and that the next char is not '%'
git_buf_put(&expanded, lastPercentage, idx - lastPercentage);
++idx;
if (*idx == 'f')
git_buf_printf(&expanded, "\"%s\"", replaceWith);
++idx;
lastPercentage = idx;
continue;
}
++idx;
}
if (lastPercentage)
git_buf_put(&expanded, lastPercentage, idx - lastPercentage);
if (git_buf_oom(&expanded))
{
giterr_set_oom();
return -1;
}
git_buf_swap(buf, &expanded);
git_buf_free(&expanded);
}
return 0;
}
/* test swap */
void test_core_buffer__6(void)
{
git_buf a = GIT_BUF_INIT;
git_buf b = GIT_BUF_INIT;
git_buf_sets(&a, "foo");
cl_assert(git_buf_oom(&a) == 0);
git_buf_sets(&b, "bar");
cl_assert(git_buf_oom(&b) == 0);
cl_assert_equal_s("foo", git_buf_cstr(&a));
cl_assert_equal_s("bar", git_buf_cstr(&b));
git_buf_swap(&a, &b);
cl_assert_equal_s("bar", git_buf_cstr(&a));
cl_assert_equal_s("foo", git_buf_cstr(&b));
git_buf_free(&a);
git_buf_free(&b);
}
int git_futils_dirs_set(git_futils_dir_t which, const char *search_path)
{
const char *expand_path = NULL;
git_buf merge = GIT_BUF_INIT;
GITERR_CHECK_ERROR(git_futils_check_selector(which));
if (search_path != NULL)
expand_path = strstr(search_path, PATH_MAGIC);
/* init with default if not yet done and needed (ignoring error) */
if ((!search_path || expand_path) &&
!git_buf_len(&git_futils__dirs[which]))
git_futils__dir_guess[which](&git_futils__dirs[which]);
/* if $PATH is not referenced, then just set the path */
if (!expand_path)
return git_buf_sets(&git_futils__dirs[which], search_path);
/* otherwise set to join(before $PATH, old value, after $PATH) */
if (expand_path > search_path)
git_buf_set(&merge, search_path, expand_path - search_path);
if (git_buf_len(&git_futils__dirs[which]))
git_buf_join(&merge, GIT_PATH_LIST_SEPARATOR,
merge.ptr, git_futils__dirs[which].ptr);
expand_path += strlen(PATH_MAGIC);
if (*expand_path)
git_buf_join(&merge, GIT_PATH_LIST_SEPARATOR, merge.ptr, expand_path);
git_buf_swap(&git_futils__dirs[which], &merge);
git_buf_free(&merge);
return git_buf_oom(&git_futils__dirs[which]) ? -1 : 0;
}
static int filter_apply(
git_filter *self,
void **payload, /* may be read and/or set */
git_buf *to,
const git_buf *from,
const git_filter_source *src)
{
struct filter_filter *ffs = (struct filter_filter *)self;
git_config *config;
git_buf configKey = GIT_BUF_INIT;
int isRequired = FALSE;
int error;
const char *cmd = NULL;
git_buf cmdBuf = GIT_BUF_INIT;
wchar_t *wide_cmd;
COMMAND_HANDLE commandHandle = COMMAND_HANDLE_INIT;
git_buf errBuf = GIT_BUF_INIT;
DWORD exitCode;
if (!*payload)
return GIT_PASSTHROUGH;
if (git_repository_config__weakptr(&config, git_filter_source_repo(src)))
return -1;
git_buf_join3(&configKey, '.', "filter", *payload, "required");
if (git_buf_oom(&configKey)) {
giterr_set_oom();
return -1;
}
error = git_config_get_bool(&isRequired, config, configKey.ptr);
git_buf_free(&configKey);
if (error && error != GIT_ENOTFOUND)
return -1;
git_buf_join(&configKey, '.', "filter", *payload);
if (git_filter_source_mode(src) == GIT_FILTER_SMUDGE) {
git_buf_puts(&configKey, ".smudge");
} else {
git_buf_puts(&configKey, ".clean");
}
if (git_buf_oom(&configKey)) {
giterr_set_oom();
return -1;
}
error = git_config_get_string(&cmd, config, configKey.ptr);
git_buf_free(&configKey);
if (error && error != GIT_ENOTFOUND)
return -1;
if (error == GIT_ENOTFOUND) {
if (isRequired)
return -1;
return GIT_PASSTHROUGH;
}
git_buf_puts(&cmdBuf, cmd);
if (git_buf_oom(&cmdBuf)) {
giterr_set_oom();
return -1;
}
if (expandPerCentF(&cmdBuf, git_filter_source_path(src)))
return -1;
if (ffs->shexepath) {
// build params for sh.exe
git_buf shParams = GIT_BUF_INIT;
git_buf_puts(&shParams, " -c \"");
git_buf_text_puts_escaped(&shParams, cmdBuf.ptr, "\"\\", "\\");
git_buf_puts(&shParams, "\"");
if (git_buf_oom(&shParams)) {
git_buf_free(&cmdBuf);
giterr_set_oom();
return -1;
}
git_buf_swap(&shParams, &cmdBuf);
git_buf_free(&shParams);
}
if (git__utf8_to_16_alloc(&wide_cmd, cmdBuf.ptr) < 0)
{
git_buf_free(&cmdBuf);
giterr_set_oom();
return -1;
}
git_buf_free(&cmdBuf);
if (ffs->shexepath) {
// build cmd, i.e. shexepath + params
size_t len = wcslen(ffs->shexepath) + wcslen(wide_cmd) + 1;
wchar_t *tmp = git__calloc(len, sizeof(wchar_t));
if (!tmp) {
git__free(wide_cmd);
giterr_set_oom();
return -1;
}
wcscat_s(tmp, len, ffs->shexepath);
wcscat_s(tmp, len, wide_cmd);
git__free(wide_cmd);
wide_cmd = tmp;
}
commandHandle.errBuf = &errBuf;
if (command_start(wide_cmd, &commandHandle, ffs->pEnv)) {
git__free(wide_cmd);
if (isRequired)
return -1;
return GIT_PASSTHROUGH;
}
git__free(wide_cmd);
if (commmand_start_stdout_reading_thread(&commandHandle, to)) {
command_close(&commandHandle);
return -1;
}
if (command_write_gitbuf(&commandHandle, from)) {
DWORD exitCode = command_close(&commandHandle);
if (exitCode)
setProcessError(exitCode, &errBuf);
git_buf_free(&errBuf);
if (isRequired)
return -1;
return GIT_PASSTHROUGH;
}
command_close_stdin(&commandHandle);
if (command_wait_stdout_reading_thread(&commandHandle)) {
DWORD exitCode = command_close(&commandHandle);
if (exitCode)
setProcessError(exitCode, &errBuf);
git_buf_free(&errBuf);
if (isRequired)
return -1;
return GIT_PASSTHROUGH;
}
exitCode = command_close(&commandHandle);
if (exitCode) {
if (isRequired) {
setProcessError(exitCode, &errBuf);
git_buf_free(&errBuf);
return -1;
}
git_buf_free(&errBuf);
return GIT_PASSTHROUGH;
}
git_buf_free(&errBuf);
return 0;
}
int git_futils_readbuffer_updated(
git_buf *out, const char *path, git_oid *checksum, int *updated)
{
int error;
git_file fd;
struct stat st;
git_buf buf = GIT_BUF_INIT;
git_oid checksum_new;
assert(out && path && *path);
if (updated != NULL)
*updated = 0;
if (p_stat(path, &st) < 0)
return git_path_set_error(errno, path, "stat");
if (S_ISDIR(st.st_mode)) {
giterr_set(GITERR_INVALID, "requested file is a directory");
return GIT_ENOTFOUND;
}
if (!git__is_sizet(st.st_size+1)) {
giterr_set(GITERR_OS, "invalid regular file stat for '%s'", path);
return -1;
}
if ((fd = git_futils_open_ro(path)) < 0)
return fd;
if (git_futils_readbuffer_fd(&buf, fd, (size_t)st.st_size) < 0) {
p_close(fd);
return -1;
}
p_close(fd);
if (checksum) {
if ((error = git_hash_buf(&checksum_new, buf.ptr, buf.size)) < 0) {
git_buf_free(&buf);
return error;
}
/*
* If we were given a checksum, we only want to use it if it's different
*/
if (!git_oid__cmp(checksum, &checksum_new)) {
git_buf_free(&buf);
if (updated)
*updated = 0;
return 0;
}
git_oid_cpy(checksum, &checksum_new);
}
/*
* If we're here, the file did change, or the user didn't have an old version
*/
if (updated != NULL)
*updated = 1;
git_buf_swap(out, &buf);
git_buf_free(&buf);
return 0;
}
static int find_repo(
git_buf *repo_path,
git_buf *parent_path,
const char *start_path,
uint32_t flags,
const char *ceiling_dirs)
{
int error;
git_buf path = GIT_BUF_INIT;
struct stat st;
dev_t initial_device = 0;
bool try_with_dot_git = ((flags & GIT_REPOSITORY_OPEN_BARE) != 0);
int ceiling_offset;
git_buf_free(repo_path);
if ((error = git_path_prettify(&path, start_path, NULL)) < 0)
return error;
ceiling_offset = find_ceiling_dir_offset(path.ptr, ceiling_dirs);
if (!try_with_dot_git &&
(error = git_buf_joinpath(&path, path.ptr, DOT_GIT)) < 0)
return error;
while (!error && !git_buf_len(repo_path)) {
if (p_stat(path.ptr, &st) == 0) {
/* check that we have not crossed device boundaries */
if (initial_device == 0)
initial_device = st.st_dev;
else if (st.st_dev != initial_device &&
(flags & GIT_REPOSITORY_OPEN_CROSS_FS) == 0)
break;
if (S_ISDIR(st.st_mode)) {
if (valid_repository_path(&path)) {
git_path_to_dir(&path);
git_buf_set(repo_path, path.ptr, path.size);
break;
}
}
else if (S_ISREG(st.st_mode)) {
git_buf repo_link = GIT_BUF_INIT;
if (!(error = read_gitfile(&repo_link, path.ptr))) {
if (valid_repository_path(&repo_link))
git_buf_swap(repo_path, &repo_link);
git_buf_free(&repo_link);
break;
}
git_buf_free(&repo_link);
}
}
/* move up one directory level */
if (git_path_dirname_r(&path, path.ptr) < 0) {
error = -1;
break;
}
if (try_with_dot_git) {
/* if we tried original dir with and without .git AND either hit
* directory ceiling or NO_SEARCH was requested, then be done.
*/
if (path.ptr[ceiling_offset] == '\0' ||
(flags & GIT_REPOSITORY_OPEN_NO_SEARCH) != 0)
break;
/* otherwise look first for .git item */
error = git_buf_joinpath(&path, path.ptr, DOT_GIT);
}
try_with_dot_git = !try_with_dot_git;
}
if (!error && parent_path && !(flags & GIT_REPOSITORY_OPEN_BARE)) {
if (!git_buf_len(repo_path))
git_buf_clear(parent_path);
else {
git_path_dirname_r(parent_path, path.ptr);
git_path_to_dir(parent_path);
}
if (git_buf_oom(parent_path))
return -1;
}
git_buf_free(&path);
if (!git_buf_len(repo_path) && !error) {
giterr_set(GITERR_REPOSITORY,
"Could not find repository from '%s'", start_path);
error = GIT_ENOTFOUND;
}
return error;
}
