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lib/index/scanner: tidy up a bit 

Use strcmp instead of hand-optimized. Avoid tmp/ directories.
This commit is contained in:
Dirk-Jan C. Binnema 2021-10-21 19:15:48 +03:00
parent f3e3cc9ca2
commit e46347aa54
2 changed files with 17 additions and 26 deletions
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35
lib/index/mu-scanner.cc
View File

@ -1,5 +1,5 @@
/*
** Copyright (C) 2020 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
** Copyright (C) 2020-2021 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
@ -58,43 +58,34 @@ struct Scanner::Private {
};
static bool
is_special_dir(const struct dirent* dentry)
is_special_dir(const char* d_name)
{
const auto d_name{dentry->d_name};
return d_name[0] == '\0' || (d_name[1] == '\0' && d_name[0] == '.') ||
(d_name[2] == '\0' && d_name[0] == '.' && d_name[1] == '.');
}
static bool
is_new_cur(const char* dirname)
{
if (dirname[0] == 'c' && dirname[1] == 'u' && dirname[2] == 'r' && dirname[3] == '\0')
return true;
if (dirname[0] == 'n' && dirname[1] == 'e' && dirname[2] == 'w' && dirname[3] == '\0')
return true;
return false;
}
bool
Scanner::Private::process_dentry(const std::string& path, struct dirent* dentry, bool is_maildir)
{
if (is_special_dir(dentry))
const auto d_name{dentry->d_name};
if (is_special_dir(d_name) || std::strcmp(d_name, "tmp") == 0)
return true; // ignore.
const auto fullpath{path + "/" + dentry->d_name};
struct stat statbuf;
const auto fullpath{path + "/" + d_name};
struct stat statbuf {
};
if (::stat(fullpath.c_str(), &statbuf) != 0) {
g_warning("failed to stat %s: %s", fullpath.c_str(), g_strerror(errno));
return false;
}
if (S_ISDIR(statbuf.st_mode)) {
const auto new_cur = is_new_cur(dentry->d_name);
const auto htype = new_cur ? Scanner::HandleType::EnterNewCur
: Scanner::HandleType::EnterDir;
const auto res = handler_(fullpath, &statbuf, htype);
const auto new_cur =
std::strcmp(d_name, "cur") == 0 || std::strcmp(d_name, "new") == 0;
const auto htype = new_cur ? Scanner::HandleType::EnterNewCur
: Scanner::HandleType::EnterDir;
const auto res = handler_(fullpath, &statbuf, htype);
if (!res)
return true; // skip

8
lib/index/mu-scanner.hh
View File

@ -35,13 +35,13 @@ namespace Mu {
/// Scans maildir (trees) recursively, and calls the Handler callback for
/// directories & files.
///
/// It filters out (i.e., does call the handler for):
/// It filters out (i.e., does *not* call the handler for):
/// - files starting with '.'
/// - files that do not live in a cur / new leaf maildir
/// - directories '.' and '..'
/// - directories '.' and '..' and 'tmp'
///
class Scanner {
public:
public:
enum struct HandleType {
File,
EnterNewCur, /* cur/ or new/ */
@ -90,7 +90,7 @@ class Scanner {
*/
bool is_running() const;
private:
private:
struct Private;
std::unique_ptr<Private> priv_;
};