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mirror of https://github.com/mpv-player/mpv synced 2024-11-03 03:19:24 +01:00
mpv/waftools/generators/sources.py
Philip Sequeira 2712db8238 zsh completion: move generation to runtime and improve
The completion function itself now parses --list-options on the first
tab press and caches the results. This does mean a slight delay on that
first tab press, but it will only do this if the argument being
completed looks like an option (i.e. starts with "-"), so there is never
a delay when just completing a file name. I've also put some effort into
making it reasonably fast; on my machine it's consistently under 100 ms,
more than half of which is mpv itself.

Installation of zsh completion is now done unconditionally because it's
nothing more than copying a file. If you really don't want it installed,
set zshdir to empty: `./waf configure --zshdir= ...`

Improvements in functionality compared to the old script:

 * Produces the right results for mpv binaries other than the one it was
   installed with (like a dev build for testing changes).

 * Does not require running mpv at build time, so it won't cause
   problems with cross compilation.

 * Handles aliases.

 * Slightly nicer handling of options that take comma-separated values
   and/or sub-options: A space is now inserted at the end instead of a
   comma, allowing you to immediately start typing the next argument,
   but typing a comma will still remove the automatically added space,
   and = and : will now do that too, so you can immediately add a
   sub-option.

 * More general/flexible handling of values for options that print their
   possible values with --option=help. The code as is could handle quite
   a few more options (*scale, demuxers, decoders, ...), but nobody
   wants to maintain that list here so we'll just stick with what the
   old completion script already did.
2019-09-27 13:19:29 +02:00

96 lines
3.2 KiB
Python

from waflib.Build import BuildContext
from waflib import TaskGen, Utils
from io import StringIO
from TOOLS.matroska import generate_C_header, generate_C_definitions
from TOOLS.file2string import file2string
import os
def __wayland_scanner_cmd__(ctx, mode, dir, src, vendored_file):
return "${{WAYSCAN}} {0} < {1} > ${{TGT}}".format(
mode,
"${SRC}" if vendored_file else "{}/{}".format(dir, src)
)
def __file2string__(ctx, **kwargs):
ctx(
rule = __file2string_cmd__(ctx),
before = ("c",),
name = os.path.basename(kwargs['target']),
**kwargs
)
def execf(self, fn):
setattr(self, 'before', ['c'])
setattr(self, 'rule', ' ') # waf doesn't print the task with no rule
target = getattr(self, 'target', None)
out = self.path.find_or_declare(target)
tmp = StringIO()
fn(tmp)
out.write(tmp.getvalue())
tmp.close()
@TaskGen.feature('file2string')
def f2s(self):
def fn(out):
source = getattr(self, 'source', None)
src = self.path.find_resource(source)
file2string(source, iter(src.read().splitlines(True)), out)
execf(self, fn)
@TaskGen.feature('ebml_header')
def ebml_header(self):
execf(self, generate_C_header)
@TaskGen.feature('ebml_definitions')
def ebml_definitions(self):
execf(self, generate_C_definitions)
def __wayland_protocol_code__(ctx, **kwargs):
protocol_is_vendored = kwargs.get("vendored_protocol", False)
file_name = kwargs['protocol'] + '.xml'
if protocol_is_vendored:
del kwargs['vendored_protocol']
kwargs['source'] = '{}/{}'.format(kwargs['proto_dir'], file_name)
ctx(
rule = __wayland_scanner_cmd__(ctx, 'private-code', kwargs['proto_dir'],
file_name,
protocol_is_vendored),
name = os.path.basename(kwargs['target']),
**kwargs
)
def __wayland_protocol_header__(ctx, **kwargs):
protocol_is_vendored = kwargs.get("vendored_protocol", False)
file_name = kwargs['protocol'] + '.xml'
if protocol_is_vendored:
del kwargs['vendored_protocol']
kwargs['source'] = '{}/{}'.format(kwargs['proto_dir'], file_name)
ctx(
rule = __wayland_scanner_cmd__(ctx, 'client-header', kwargs['proto_dir'],
file_name,
protocol_is_vendored),
before = ('c',),
name = os.path.basename(kwargs['target']),
**kwargs
)
@TaskGen.feature('cprogram')
@TaskGen.feature('cshlib')
@TaskGen.feature('cstlib')
@TaskGen.feature('apply_link')
@TaskGen.after_method('process_source', 'process_use', 'apply_link', 'process_uselib_local', 'propagate_uselib_vars', 'do_the_symbol_stuff')
def handle_add_object(tgen):
if getattr(tgen, 'add_objects', None):
for input in tgen.add_objects:
input_node = tgen.path.find_resource(input)
if input_node is not None:
tgen.link_task.inputs.append(input_node)
BuildContext.file2string = __file2string__
BuildContext.wayland_protocol_code = __wayland_protocol_code__
BuildContext.wayland_protocol_header = __wayland_protocol_header__