/* Copies the data from ORIGINAL_STREAM to a temporary file, returning both
the original and compressed size. */
static svn_error_t *
create_compressed(apr_file_t **result,
svn_filesize_t *full_size,
svn_filesize_t *compressed_size,
svn_stream_t *original_stream,
svn_cancel_func_t cancel_func,
void *cancel_baton,
apr_pool_t *result_pool,
apr_pool_t *scratch_pool)
{
svn_stream_t *compressed;
svn_filesize_t bytes_read = 0;
apr_size_t rd;
SVN_ERR(svn_io_open_uniquely_named(result, NULL, NULL, "diffgz",
NULL, svn_io_file_del_on_pool_cleanup,
result_pool, scratch_pool));
compressed = svn_stream_compressed(
svn_stream_from_aprfile2(*result, TRUE, scratch_pool),
scratch_pool);
if (original_stream)
do
{
char buffer[SVN__STREAM_CHUNK_SIZE];
rd = sizeof(buffer);
if (cancel_func)
SVN_ERR(cancel_func(cancel_baton));
SVN_ERR(svn_stream_read_full(original_stream, buffer, &rd));
bytes_read += rd;
SVN_ERR(svn_stream_write(compressed, buffer, &rd));
}
while(rd == SVN__STREAM_CHUNK_SIZE);
else
{
apr_size_t zero = 0;
SVN_ERR(svn_stream_write(compressed, NULL, &zero));
}
SVN_ERR(svn_stream_close(compressed)); /* Flush compression */
*full_size = bytes_read;
SVN_ERR(svn_io_file_size_get(compressed_size, *result, scratch_pool));
return SVN_NO_ERROR;
}
/* Remove the directory at LOCAL_ABSPATH from revision control, and do the
* same to any revision controlled directories underneath LOCAL_ABSPATH
* (including directories not referred to by parent svn administrative areas);
* then if LOCAL_ABSPATH is empty afterwards, remove it, else rename it to a
* unique name in the same parent directory.
*
* Pass CANCEL_FUNC, CANCEL_BATON to svn_wc_remove_from_revision_control.
*
* Use SCRATCH_POOL for all temporary allocation.
*/
static svn_error_t *
relegate_dir_external(svn_wc_context_t *wc_ctx,
const char *wri_abspath,
const char *local_abspath,
svn_cancel_func_t cancel_func,
void *cancel_baton,
svn_wc_notify_func2_t notify_func,
void *notify_baton,
apr_pool_t *scratch_pool)
{
svn_error_t *err = SVN_NO_ERROR;
SVN_ERR(svn_wc__acquire_write_lock(NULL, wc_ctx, local_abspath,
FALSE, scratch_pool, scratch_pool));
err = svn_wc__external_remove(wc_ctx, wri_abspath, local_abspath, FALSE,
cancel_func, cancel_baton, scratch_pool);
if (err && (err->apr_err == SVN_ERR_WC_LEFT_LOCAL_MOD))
{
const char *parent_dir;
const char *dirname;
const char *new_path;
svn_error_clear(err);
err = SVN_NO_ERROR;
svn_dirent_split(&parent_dir, &dirname, local_abspath, scratch_pool);
/* Reserve the new dir name. */
SVN_ERR(svn_io_open_uniquely_named(NULL, &new_path,
parent_dir, dirname, ".OLD",
svn_io_file_del_none,
scratch_pool, scratch_pool));
/* Sigh... We must fall ever so slightly from grace.
Ideally, there would be no window, however brief, when we
don't have a reservation on the new name. Unfortunately,
at least in the Unix (Linux?) version of apr_file_rename(),
you can't rename a directory over a file, because it's just
calling stdio rename(), which says:
ENOTDIR
A component used as a directory in oldpath or newpath
path is not, in fact, a directory. Or, oldpath is
a directory, and newpath exists but is not a directory
So instead, we get the name, then remove the file (ugh), then
rename the directory, hoping that nobody has gotten that name
in the meantime -- which would never happen in real life, so
no big deal.
*/
/* Do our best, but no biggy if it fails. The rename will fail. */
svn_error_clear(svn_io_remove_file2(new_path, TRUE, scratch_pool));
/* Rename. If this is still a working copy we should use the working
copy rename function (to release open handles) */
err = svn_wc__rename_wc(wc_ctx, local_abspath, new_path,
scratch_pool);
if (err && err->apr_err == SVN_ERR_WC_PATH_UNEXPECTED_STATUS)
{
svn_error_clear(err);
/* And if it is no longer a working copy, we should just rename
it */
err = svn_io_file_rename(local_abspath, new_path, scratch_pool);
}
/* ### TODO: We should notify the user about the rename */
if (notify_func)
{
svn_wc_notify_t *notify;
notify = svn_wc_create_notify(err ? local_abspath : new_path,
svn_wc_notify_left_local_modifications,
scratch_pool);
notify->kind = svn_node_dir;
notify->err = err;
notify_func(notify_baton, notify, scratch_pool);
}
}
return svn_error_trace(err);
}
svn_error_t *
svn_cl__edit_string_externally(svn_string_t **edited_contents /* UTF-8! */,
const char **tmpfile_left /* UTF-8! */,
const char *editor_cmd,
const char *base_dir /* UTF-8! */,
const svn_string_t *contents /* UTF-8! */,
const char *filename,
apr_hash_t *config,
svn_boolean_t as_text,
const char *encoding,
apr_pool_t *pool)
{
const char *editor;
const char *cmd;
apr_file_t *tmp_file;
const char *tmpfile_name;
const char *tmpfile_native;
const char *tmpfile_apr, *base_dir_apr;
svn_string_t *translated_contents;
apr_status_t apr_err, apr_err2;
apr_size_t written;
apr_finfo_t finfo_before, finfo_after;
svn_error_t *err = SVN_NO_ERROR, *err2;
char *old_cwd;
int sys_err;
svn_boolean_t remove_file = TRUE;
SVN_ERR(find_editor_binary(&editor, editor_cmd, config));
/* Convert file contents from UTF-8/LF if desired. */
if (as_text)
{
const char *translated;
SVN_ERR(svn_subst_translate_cstring2(contents->data, &translated,
APR_EOL_STR, FALSE,
NULL, FALSE, pool));
translated_contents = svn_string_create("", pool);
if (encoding)
SVN_ERR(svn_utf_cstring_from_utf8_ex2(&translated_contents->data,
translated, encoding, pool));
else
SVN_ERR(svn_utf_cstring_from_utf8(&translated_contents->data,
translated, pool));
translated_contents->len = strlen(translated_contents->data);
}
else
translated_contents = svn_string_dup(contents, pool);
/* Move to BASE_DIR to avoid getting characters that need quoting
into tmpfile_name */
apr_err = apr_filepath_get(&old_cwd, APR_FILEPATH_NATIVE, pool);
if (apr_err)
return svn_error_wrap_apr(apr_err, _("Can't get working directory"));
/* APR doesn't like "" directories */
if (base_dir[0] == '\0')
base_dir_apr = ".";
else
SVN_ERR(svn_path_cstring_from_utf8(&base_dir_apr, base_dir, pool));
apr_err = apr_filepath_set(base_dir_apr, pool);
if (apr_err)
{
return svn_error_wrap_apr
(apr_err, _("Can't change working directory to '%s'"), base_dir);
}
/*** From here on, any problems that occur require us to cd back!! ***/
/* Ask the working copy for a temporary file named FILENAME-something. */
err = svn_io_open_uniquely_named(&tmp_file, &tmpfile_name,
"" /* dirpath */,
filename,
".tmp",
svn_io_file_del_none, pool, pool);
if (err && (APR_STATUS_IS_EACCES(err->apr_err) || err->apr_err == EROFS))
{
const char *temp_dir_apr;
svn_error_clear(err);
SVN_ERR(svn_io_temp_dir(&base_dir, pool));
SVN_ERR(svn_path_cstring_from_utf8(&temp_dir_apr, base_dir, pool));
apr_err = apr_filepath_set(temp_dir_apr, pool);
if (apr_err)
{
return svn_error_wrap_apr
(apr_err, _("Can't change working directory to '%s'"), base_dir);
}
err = svn_io_open_uniquely_named(&tmp_file, &tmpfile_name,
"" /* dirpath */,
filename,
".tmp",
svn_io_file_del_none, pool, pool);
}
if (err)
goto cleanup2;
/*** From here on, any problems that occur require us to cleanup
the file we just created!! ***/
/* Dump initial CONTENTS to TMP_FILE. */
apr_err = apr_file_write_full(tmp_file, translated_contents->data,
translated_contents->len, &written);
apr_err2 = apr_file_close(tmp_file);
if (! apr_err)
apr_err = apr_err2;
/* Make sure the whole CONTENTS were written, else return an error. */
if (apr_err)
{
err = svn_error_wrap_apr(apr_err, _("Can't write to '%s'"),
tmpfile_name);
goto cleanup;
}
err = svn_path_cstring_from_utf8(&tmpfile_apr, tmpfile_name, pool);
if (err)
goto cleanup;
/* Get information about the temporary file before the user has
been allowed to edit its contents. */
apr_err = apr_stat(&finfo_before, tmpfile_apr,
APR_FINFO_MTIME, pool);
if (apr_err)
{
err = svn_error_wrap_apr(apr_err, _("Can't stat '%s'"), tmpfile_name);
goto cleanup;
}
/* Backdate the file a little bit in case the editor is very fast
and doesn't change the size. (Use two seconds, since some
filesystems have coarse granularity.) It's OK if this call
fails, so we don't check its return value.*/
apr_file_mtime_set(tmpfile_apr, finfo_before.mtime - 2000, pool);
/* Stat it again to get the mtime we actually set. */
apr_err = apr_stat(&finfo_before, tmpfile_apr,
APR_FINFO_MTIME | APR_FINFO_SIZE, pool);
if (apr_err)
{
err = svn_error_wrap_apr(apr_err, _("Can't stat '%s'"), tmpfile_name);
goto cleanup;
}
/* Prepare the editor command line. */
err = svn_utf_cstring_from_utf8(&tmpfile_native, tmpfile_name, pool);
if (err)
goto cleanup;
cmd = apr_psprintf(pool, "%s %s", editor, tmpfile_native);
/* If the caller wants us to leave the file around, return the path
of the file we'll use, and make a note not to destroy it. */
if (tmpfile_left)
{
*tmpfile_left = svn_dirent_join(base_dir, tmpfile_name, pool);
remove_file = FALSE;
}
/* Now, run the editor command line. */
sys_err = system(cmd);
if (sys_err != 0)
{
/* Extracting any meaning from sys_err is platform specific, so just
use the raw value. */
err = svn_error_createf(SVN_ERR_EXTERNAL_PROGRAM, NULL,
_("system('%s') returned %d"), cmd, sys_err);
goto cleanup;
}
/* Get information about the temporary file after the assumed editing. */
apr_err = apr_stat(&finfo_after, tmpfile_apr,
APR_FINFO_MTIME | APR_FINFO_SIZE, pool);
if (apr_err)
{
err = svn_error_wrap_apr(apr_err, _("Can't stat '%s'"), tmpfile_name);
goto cleanup;
}
/* If the file looks changed... */
if ((finfo_before.mtime != finfo_after.mtime) ||
(finfo_before.size != finfo_after.size))
{
svn_stringbuf_t *edited_contents_s;
err = svn_stringbuf_from_file2(&edited_contents_s, tmpfile_name, pool);
if (err)
goto cleanup;
*edited_contents = svn_stringbuf__morph_into_string(edited_contents_s);
/* Translate back to UTF8/LF if desired. */
if (as_text)
{
err = svn_subst_translate_string2(edited_contents, FALSE, FALSE,
*edited_contents, encoding, FALSE,
pool, pool);
if (err)
{
err = svn_error_quick_wrap
(err,
_("Error normalizing edited contents to internal format"));
goto cleanup;
}
}
}
else
{
/* No edits seem to have been made */
*edited_contents = NULL;
}
cleanup:
if (remove_file)
{
/* Remove the file from disk. */
err2 = svn_io_remove_file2(tmpfile_name, FALSE, pool);
/* Only report remove error if there was no previous error. */
if (! err && err2)
err = err2;
else
svn_error_clear(err2);
}
cleanup2:
/* If we against all probability can't cd back, all further relative
file references would be screwed up, so we have to abort. */
apr_err = apr_filepath_set(old_cwd, pool);
if (apr_err)
{
svn_handle_error2(svn_error_wrap_apr
(apr_err, _("Can't restore working directory")),
stderr, TRUE /* fatal */, "svn: ");
}
return svn_error_trace(err);
}
