This can be done by finding each macro in the component and modifying it by hand.
It can be done by using 'Replace' - but only if the components are compatible (I didn't manage to get this to work - using two displays with Initialise called on one - attempting to change to the other display gave a 'this will lead to errors' message)
Being lazy - I wrote a small Python script to do the hard work
So using (for example) - a Flowchart (Flowcode1.fcfx) with two components - one with handle 'gLCD_SSD1306_i2c1' that I want to replace with gLCD_ST7565R1.
On a command line I do:
python component.py Flowcode1 NewFile gLCD_SSD1306_i2c1 gLCD_ST7565R1
which reads Flowcode1.fcfx and outputs a new file NewFile.fcfx with gLCD_SSD1306_i2c1 replaced by gLCD_ST7565R1 - I can then edit NewFile and delete the unused component. Any compatibility issues (different number of arguments or missing macros) will be highlighted as an error - and can be corrected.
Note that NewFile.fcfx will be overwritten if it already exists (and if you set to be the same as input will overwrite that - but check results first !! )
Code: Select all
import argparse
from bs4 import BeautifulSoup
def replace_component_in_xml(file_path, new_path, old_value, new_value):
"""
Reads an XML file, finds all <macro> tags where the 'component' attribute
matches old_value, and replaces it with new_value.
Args:
file_path (str): The path to the input XML file.
new_path (str): Output as new file
old_value (str): The component value to search for.
new_value (str): The new value to replace the old_value with.
"""
try:
# Step 1: Read the XML file
with open(file_path, 'r', encoding='utf-8') as file:
content = file.read()
# Step 2: Parse the XML with BeautifulSoup
soup = BeautifulSoup(content, 'xml')
# Step 3: Find all matching nodes
nodes_to_update = soup.find_all('command', component=old_value)
if not nodes_to_update:
print(f"No <macro> nodes with component='{old_value}' found. No changes made.")
return
# Step 4: Iterate and replace the attribute value
for tag in nodes_to_update:
original_tag = str(tag)
tag['component'] = new_value
print(f"Found and replaced: {original_tag} -> {str(tag)}")
# Step 5: Write the changes back to the file
with open(new_path, 'w', encoding='utf-8') as file:
file.write(str(soup.prettify()))
print(f"\nSuccessfully updated {len(nodes_to_update)} node(s) in {file_path} - saved as {new_path}.")
except FileNotFoundError:
print(f"Error: The file '{file_path}' was not found.")
except Exception as e:
print(f"An unexpected error occurred: {e}")
def main():
"""
Sets up command-line argument parsing and calls the main function.
"""
# Initialize the parser
parser = argparse.ArgumentParser(
description="Replaces the 'component' attribute value in <macro> tags of an XML file."
)
# Add the arguments we expect
parser.add_argument("file_path", help="The path to the Flowcode file to process.")
parser.add_argument("out_path", help="The new file to save Flowchart as")
parser.add_argument("old_value", help="The current component value to be replaced (e.g., 'abc').")
parser.add_argument("new_value", help="The new component value to set (e.g., 'Def').")
# Parse the arguments from the command line
args = parser.parse_args()
# Call the main processing function with the parsed arguments
replace_component_in_xml(args.file_path + ".fcfx", args.out_path + ".fcfx", args.old_value, args.new_value)
if __name__ == "__main__":
main()Save the code as 'component.py' (or name.py of your choice)
You will need BeautifulSoup and lxml (pip install bs4 lxml)
Anyone who tries this - please let us know how you get on...
Martin