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Merge remote-tracking branch 'lenormf/readonly-mode'

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This commit is contained in:
Maxime Coste 2016-07-24 21:21:49 +01:00
commit 003cb8dfea
7 changed files with 55 additions and 16 deletions
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4
README.asciidoc
View File

@ -231,6 +231,7 @@ Just running *kak* launch a new kak session with a client on local terminal.
read keystrokes as json on stdin.
* `-l`: list existing sessions, and check the dead ones
* `-clear`: clear dead sessions socket files
* `-ro`: prevent modifications to all buffers from being saved to disk
At startup, if `-n` is not specified, Kakoune will try to source the file
`../share/kak/kakrc` relative to the kak binary. This kak file will then try
@ -864,6 +865,9 @@ Some options are built in Kakoune, and can be used to control it's behaviour:
writing a buffer, this is autodetected on load.
* `BOM` _enum(none|utf8)_: define if the file should be written
with an unicode byte order mark.
* `readonly` _bool_: prevent modifications from being saved to disk, all
buffers if set to `true` in the `global` scope, or current buffer if set in
the `buffer` scope.
* `incsearch` _bool_: execute search as it is typed
* `aligntab` _bool_: use tabs for alignment command
* `autoinfo` _flags(command|onkey|normal)_: display automatic information

5
doc/manpages/options.asciidoc
View File

@ -70,6 +70,11 @@ Builtin options
*BOM* 'enum(none|utf8)'::
define if the file should be written with an unicode byte order mark
*readonly* 'bool'::
prevent modifications from being saved to disk, all
buffers if set to `true` in the `global` scope, or current buffer if set in
the `buffer` scope.
*incsearch* 'bool'::
execute search as it is typed

7
src/buffer.cc
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@ -606,6 +606,13 @@ void Buffer::set_fs_timestamp(timespec ts)
void Buffer::on_option_changed(const Option& option)
{
if (option.name() == "readonly")
{
if (option.get<bool>())
m_flags |= Flags::ReadOnly;
else
m_flags &= ~Flags::ReadOnly;
}
run_hook_in_own_context("BufSetOption",
format("{}={}", option.name(), option.get_as_string()));
}

13
src/buffer.hh
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@ -101,12 +101,13 @@ class Buffer : public SafeCountable, public OptionManagerWatcher, public Scope
public:
enum class Flags
{
None = 0,
File = 1 << 0,
New = 1 << 1,
Fifo = 1 << 2,
NoUndo = 1 << 3,
Debug = 1 << 4
None = 0,
File = 1 << 0,
New = 1 << 1,
Fifo = 1 << 2,
NoUndo = 1 << 3,
Debug = 1 << 4,
ReadOnly = 1 << 5,
};
Buffer(String name, Flags flags, StringView data = {},

3
src/buffer_manager.cc
View File

@ -87,7 +87,8 @@ void BufferManager::backup_modified_buffers()
{
for (auto& buf : m_buffers)
{
if ((buf->flags() & Buffer::Flags::File) and buf->is_modified())
if ((buf->flags() & Buffer::Flags::File) and buf->is_modified()
and not (buf->flags() & Buffer::Flags::ReadOnly))
write_buffer_to_backup_file(*buf);
}
}

9
src/commands.cc
View File

@ -239,6 +239,12 @@ void write_buffer(const ParametersParser& parser, Context& context, const ShellC
if (parser.positional_count() == 0 and !(buffer.flags() & Buffer::Flags::File))
throw runtime_error("cannot write a non file buffer without a filename");
// if the buffer is in read-only mode and we try to save it directly
// or we try to write to it indirectly using e.g. a symlink, throw an error
if ((context.buffer().flags() & Buffer::Flags::ReadOnly)
and (parser.positional_count() == 0 or real_path(parser[0]) == buffer.name()))
throw runtime_error("cannot overwrite the buffer when in readonly mode");
auto filename = parser.positional_count() == 0 ?
buffer.name() : parse_filename(parser[0]);
write_buffer_to_file(buffer, filename);
@ -260,7 +266,8 @@ void write_all_buffers()
{
for (auto& buffer : BufferManager::instance())
{
if ((buffer->flags() & Buffer::Flags::File) and buffer->is_modified())
if ((buffer->flags() & Buffer::Flags::File) and buffer->is_modified()
and !(buffer->flags() & Buffer::Flags::ReadOnly))
write_buffer_to_file(*buffer, buffer->name());
}
}

30
src/main.cc
View File

@ -265,6 +265,7 @@ void register_options()
reg.declare_option("modelinefmt", "format string used to generate the modeline",
"%val{bufname} %val{cursor_line}:%val{cursor_char_column} "_str);
reg.declare_option("debug", "various debug flags", DebugFlags::None);
reg.declare_option("readonly", "prevent buffers from being modified", false);
}
struct convert_to_client_mode
@ -460,7 +461,7 @@ int run_client(StringView session, StringView init_command, UIType ui_type)
}
int run_server(StringView session, StringView init_command,
bool ignore_kakrc, bool daemon, UIType ui_type,
bool ignore_kakrc, bool daemon, bool readonly, UIType ui_type,
ConstArrayView<StringView> files, ByteCoord target_coord)
{
static bool terminate = false;
@ -503,6 +504,8 @@ int run_server(StringView session, StringView init_command,
write_to_debug_buffer("*** This is the debug buffer, where debug info will be written ***");
GlobalScope::instance().options().get_local_option("readonly").set(readonly);
Server server(session.empty() ? to_string(getpid()) : session.str());
bool startup_error = false;
@ -536,7 +539,9 @@ int run_server(StringView session, StringView init_command,
{
try
{
open_or_create_file_buffer(file);
Buffer *buffer = open_or_create_file_buffer(file);
if (readonly)
buffer->flags() |= Buffer::Flags::ReadOnly;
}
catch (Kakoune::runtime_error& error)
{
@ -741,7 +746,8 @@ int main(int argc, char* argv[])
{ "q", { false, "in filter mode, be quiet about errors applying keys" } },
{ "ui", { true, "set the type of user interface to use (ncurses, dummy, or json)" } },
{ "l", { false, "list existing sessions" } },
{ "clear", { false, "clear dead sessions" } } }
{ "clear", { false, "clear dead sessions" } },
{ "ro", { false, "readonly mode" } } }
};
try
{
@ -773,11 +779,11 @@ int main(int argc, char* argv[])
if (auto session = parser.get_switch("p"))
{
for (auto opt : { "c", "n", "s", "d", "e" })
for (auto opt : { "c", "n", "s", "d", "e", "ro" })
{
if (parser.get_switch(opt))
{
write_stderr(format("error: -{} makes not sense with -p\n", opt));
write_stderr(format("error: -{} is incompatible with -p\n", opt));
return -1;
}
}
@ -789,20 +795,27 @@ int main(int argc, char* argv[])
if (auto keys = parser.get_switch("f"))
{
if (parser.get_switch("ro"))
{
write_stderr("error: -ro is incompatible with -f\n");
return -1;
}
Vector<StringView> files;
for (size_t i = 0; i < parser.positional_count(); ++i)
files.emplace_back(parser[i]);
return run_filter(*keys, init_command, files, (bool)parser.get_switch("q"));
return run_filter(*keys, init_command, files,
(bool)parser.get_switch("q"));
}
if (auto server_session = parser.get_switch("c"))
{
for (auto opt : { "n", "s", "d" })
for (auto opt : { "n", "s", "d", "ro" })
{
if (parser.get_switch(opt))
{
write_stderr(format("error: -{} makes not sense with -c\n", opt));
write_stderr(format("error: -{} is incompatible with -c\n", opt));
return -1;
}
}
@ -840,6 +853,7 @@ int main(int argc, char* argv[])
return run_server(session, init_command,
(bool)parser.get_switch("n"),
(bool)parser.get_switch("d"),
(bool)parser.get_switch("ro"),
ui_type, files, target_coord);
}
catch (convert_to_client_mode& convert)