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Merge pull request #1016 from pypeclub/feature/launch_script_for_non_…
…python_hosts Launch script for non python hosts
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import os | ||
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from pype.lib import ( | ||
PreLaunchHook, | ||
get_pype_execute_args | ||
) | ||
import pype.PACKAGE_DIR | ||
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class NonPythonHostHook(PreLaunchHook): | ||
"""Launch arguments preparation. | ||
Non python host implementation do not launch host directly but use | ||
python script which launch the host. For these cases it is necessary to | ||
prepend python (or pype) executable and script path before application's. | ||
""" | ||
app_groups = ["harmony", "photoshop", "aftereffects"] | ||
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def execute(self): | ||
# Pop executable | ||
executable_path = self.launch_context.launch_args.pop(0) | ||
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# Pop rest of launch arguments - There should not be other arguments! | ||
remainders = [] | ||
while self.launch_context.launch_args: | ||
remainders.append(self.launch_context.launch_args.pop(0)) | ||
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script_path = os.path.join( | ||
pype.PACKAGE_DIR, | ||
"scripts", | ||
"non_python_host_launch.py" | ||
) | ||
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new_launch_args = get_pype_execute_args( | ||
"run", script_path, executable_path | ||
) | ||
# Add workfile path if exists | ||
workfile_path = self.data["last_workfile_path"] | ||
if os.path.exists(workfile_path): | ||
new_launch_args.append(workfile_path) | ||
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# Append as whole list as these areguments should not be separated | ||
self.launch_context.launch_args.append(new_launch_args) | ||
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if remainders: | ||
self.launch_context.launch_args.extend(remainders) |
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"""Script wraps launch mechanism of non python host implementations. | ||
Arguments passed to the script are passed to launch function in host | ||
implementation. In all cases requires host app executable and may contain | ||
workfile or others. | ||
""" | ||
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import os | ||
import sys | ||
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# Get current file to locate start point of sys.argv | ||
CURRENT_FILE = os.path.abspath(__file__) | ||
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def show_error_messagebox(title, message, detail_message=None): | ||
"""Function will show message and process ends after closing it.""" | ||
from Qt import QtWidgets, QtCore | ||
from avalon import style | ||
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app = QtWidgets.QApplication([]) | ||
app.setStyleSheet(style.load_stylesheet()) | ||
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msgbox = QtWidgets.QMessageBox() | ||
msgbox.setWindowTitle(title) | ||
msgbox.setText(message) | ||
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if detail_message: | ||
msgbox.setDetailedText(detail_message) | ||
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msgbox.setWindowModality(QtCore.Qt.ApplicationModal) | ||
msgbox.show() | ||
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sys.exit(app.exec_()) | ||
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def on_invalid_args(script_not_found): | ||
"""Show to user message box saying that something went wrong. | ||
Tell user that arguments to launch implementation are invalid with | ||
arguments details. | ||
Args: | ||
script_not_found (bool): Use different message based on this value. | ||
""" | ||
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title = "Invalid arguments" | ||
joined_args = ", ".join("\"{}\"".format(arg) for arg in sys.argv) | ||
if script_not_found: | ||
submsg = "Where couldn't find script path:\n\"{}\"" | ||
else: | ||
submsg = "Expected Host executable after script path:\n\"{}\"" | ||
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message = "BUG: Got invalid arguments so can't launch Host application." | ||
detail_message = "Process was launched with arguments:\n{}\n\n{}".format( | ||
joined_args, | ||
submsg.format(CURRENT_FILE) | ||
) | ||
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show_error_messagebox(title, message, detail_message) | ||
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def main(argv): | ||
# Modify current file path to find match in sys.argv which may be different | ||
# on windows (different letter cases and slashes). | ||
modified_current_file = CURRENT_FILE.replace("\\", "/").lower() | ||
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# Create a copy of sys argv | ||
sys_args = list(argv) | ||
after_script_idx = None | ||
# Find script path in sys.argv to know index of argv where host | ||
# executable should be. | ||
for idx, item in enumerate(sys_args): | ||
if item.replace("\\", "/").lower() == modified_current_file: | ||
after_script_idx = idx + 1 | ||
break | ||
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# Validate that there is at least one argument after script path | ||
launch_args = None | ||
if after_script_idx is not None: | ||
launch_args = sys_args[after_script_idx:] | ||
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host_name = os.environ["AVALON_APP"].lower() | ||
if host_name == "photoshop": | ||
from avalon.photoshop.lib import launch | ||
elif host_name == "aftereffects": | ||
from avalon.aftereffects.lib import launch | ||
elif host_name == "harmony": | ||
from avalon.photoshop.lib import launch | ||
else: | ||
title = "Unknown host name" | ||
message = ( | ||
"BUG: Environment variable AVALON_APP contains unknown" | ||
" host name \"{}\"" | ||
).format(host_name) | ||
show_error_messagebox(title, message) | ||
return | ||
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if launch_args: | ||
# Launch host implementation | ||
launch(*launch_args) | ||
else: | ||
# Show message box | ||
on_invalid_args(after_script_idx is None) | ||
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if __name__ == "__main__": | ||
main(sys.argv) |