p/sdn
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Store runtime and configuration to a file

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Added a toggle for gravity, now turned off by default.
This commit is contained in:
Přemysl Eric Janouch 2018-11-02 14:32:24 +01:00
parent beee2e2683
commit 4de89faf7e
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 92 additions and 18 deletions
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110
sdn.cpp
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@ -175,6 +175,14 @@ fun parse_line (istream &is, vector<string> &out) -> bool {
}
}
fun write_line (ostream &os, const vector<string> &in) {
if (!in.empty ())
os << shell_escape (in.at (0));
for (size_t i = 1; i < in.size (); i++)
os << " " << shell_escape (in.at (i));
os << endl;
}
fun decode_type (mode_t m) -> wchar_t {
if (S_ISDIR (m)) return L'd'; if (S_ISBLK (m)) return L'b';
if (S_ISCHR (m)) return L'c'; if (S_ISLNK (m)) return L'l';
@ -235,12 +243,23 @@ fun xdg_config_find (const string &suffix) -> unique_ptr<ifstream> {
for (const auto &dir : dirs) {
if (dir[0] != '/')
continue;
if (ifstream ifs {dir + suffix})
if (ifstream ifs {dir + "/" PROJECT_NAME "/" + suffix})
return make_unique<ifstream> (move (ifs));
}
return nullptr;
}
fun xdg_config_write (const string &suffix) -> unique_ptr<fstream> {
auto dir = xdg_config_home ();
if (dir[0] == '/') {
// TODO: try to create the end directory
if (fstream fs {dir + "/" PROJECT_NAME "/" + suffix,
fstream::in | fstream::out | fstream::trunc})
return make_unique<fstream> (move (fs));
}
return nullptr;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
using ncstring = basic_string<cchar_t>;
@ -439,6 +458,7 @@ static struct {
vector<level> levels; ///< Upper directory levels
int offset, cursor; ///< Scroll offset and cursor position
bool full_view; ///< Show extended information
bool gravity; ///< Entries are shoved to the bottom
int max_widths[entry::COLUMNS]; ///< Column widths
string chosen; ///< Chosen item for the command line
@ -625,7 +645,7 @@ fun update () {
auto index = g.offset + i;
bool selected = index == g.cursor;
attrset (selected ? g.attrs[g.AT_CURSOR] : 0);
move (available - used + i, 0);
move (g.gravity ? (available - used + i) : i, 0);
auto used = 0;
for (int col = start_column; col < entry::COLUMNS; col++) {
@ -782,6 +802,23 @@ fun is_ancestor_dir (const string &ancestor, const string &of) -> bool {
return of[ancestor.length ()] == '/' || (ancestor == "/" && ancestor != of);
}
fun pop_levels () {
string anchor;
auto i = g.levels.rbegin ();
while (i != g.levels.rend () && !is_ancestor_dir (i->path, g.cwd)) {
if (i->path == g.cwd) {
g.offset = i->offset;
g.cursor = i->cursor;
anchor = i->filename;
}
i++;
g.levels.pop_back ();
}
if (!anchor.empty () && (g.cursor >= g.entries.size ()
|| g.entries[g.cursor].filename != anchor))
search (to_wide (anchor));
}
fun change_dir (const string &path) {
if (chdir (path.c_str ())) {
beep ();
@ -795,20 +832,7 @@ fun change_dir (const string &path) {
g.levels.push_back (last);
g.offset = g.cursor = 0;
} else {
string anchor;
auto i = g.levels.rbegin ();
while (i != g.levels.rend () && !is_ancestor_dir (i->path, g.cwd)) {
if (i->path == g.cwd) {
g.offset = i->offset;
g.cursor = i->cursor;
anchor = i->filename;
}
i++;
g.levels.pop_back ();
}
if (!anchor.empty () && (g.cursor >= g.entries.size ()
|| g.entries[g.cursor].filename != anchor))
search (to_wide (anchor));
pop_levels ();
}
}
@ -1046,7 +1070,7 @@ fun load_colors () {
if (const char *colors = getenv ("LS_COLORS"))
load_ls_colors (split (colors, ":"));
auto config = xdg_config_find ("/" PROJECT_NAME "/look");
auto config = xdg_config_find ("look");
if (!config)
return;
@ -1133,7 +1157,7 @@ fun load_bindings () {
learn_named_key (filtered, SYM | kc);
}
auto config = xdg_config_find ("/" PROJECT_NAME "/bindings");
auto config = xdg_config_find ("bindings");
if (!config)
return;
@ -1175,6 +1199,53 @@ fun load_bindings () {
}
}
fun load_history_level (const vector<string> &v) {
if (v.size () != 6)
return;
// Not checking the hostname and parent PID right now since we can't merge
g.levels.push_back ({stoi (v.at (4)), stoi (v.at (5)), v.at (3), v.at (6)});
}
fun load_config () {
auto config = xdg_config_find ("config");
if (!config)
return;
vector<string> tokens;
while (parse_line (*config, tokens)) {
if (tokens.empty ())
continue;
if (tokens.front () == "full-view")
g.full_view = tokens.size () > 1 && tokens.at (1) == "1";
else if (tokens.front () == "gravity")
g.gravity = tokens.size () > 1 && tokens.at (1) == "1";
else if (tokens.front () == "history")
load_history_level (tokens);
}
}
fun save_config () {
auto config = xdg_config_write ("config");
if (!config)
return;
write_line (*config, {"full-view", g.full_view ? "1" : "0"});
write_line (*config, {"gravity", g.gravity ? "1" : "0"});
char hostname[256];
if (gethostname (hostname, sizeof hostname))
*hostname = 0;
auto ppid = std::to_string (getppid ());
for (auto i = g.levels.begin (); i != g.levels.end (); i++)
write_line (*config, {"history", hostname, ppid, i->path,
to_string (i->offset), to_string (i->cursor), i->filename});
write_line (*config, {"history", hostname, ppid, g.cwd,
to_string (g.offset), to_string (g.cursor),
g.entries[g.cursor].filename});
}
int main (int argc, char *argv[]) {
(void) argc;
(void) argv;
@ -1200,6 +1271,7 @@ int main (int argc, char *argv[]) {
locale::global (locale (""));
load_bindings ();
load_config ();
if (!initscr () || cbreak () == ERR || noecho () == ERR || nonl () == ERR) {
cerr << "cannot initialize screen" << endl;
@ -1209,6 +1281,7 @@ int main (int argc, char *argv[]) {
load_colors ();
reload ();
g.start_dir = g.cwd;
pop_levels ();
update ();
// Invoking keypad() earlier would make ncurses flush its output buffer,
@ -1223,6 +1296,7 @@ int main (int argc, char *argv[]) {
while (!read_key (c) || handle (c))
inotify_check ();
endwin ();
save_config ();
// Presumably it is going to end up as an argument, so quote it
if (!g.chosen.empty ())