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112 lines
3 KiB
Python
Executable file
112 lines
3 KiB
Python
Executable file
#! /usr/bin/python3
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import getopt
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import sys
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import os
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import fxconv
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help_string = """
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usage: fxconv [-s] <python script> [files...]
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fxconv -b <bin file> -o <object file> [parameters...]
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fxconv -i <png file> -o <object file> [parameters...]
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fxconv -f <png file> -o <object file> [parameters...]
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fxconv converts data files such as images and fonts into gint formats
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optimized for fast execution, or into object files.
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Operating modes:
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-s, --script Expose the fxconv module and run this Python script
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-b, --binary Turn data into an object file, no conversion
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-i, --image Convert to gint's image format
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-f, --font Convert to gint's font format
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When using -s, additional arguments are stored in the [fxconv.args] variable of
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the module. This is intended to be a restricted list of file names specified by
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a Makefile, used to convert only a subset of the files in the script.
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The -b, -i and -f modes are shortcuts to convert single files without a script.
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They accept parameters with a "category.key:value" syntax, for example:
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fxconv -f myfont.png -o myfont.o charset:ascii grid.padding:1 height:7
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""".strip()
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# Simple error-warnings system
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def err(msg):
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print("error:", msg, file=sys.stderr)
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def warn(msg):
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print("warning:", msg, file=sys.stderr)
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def main():
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# Default execution mode is to run a Python script for conversion
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modes = "script binary image font"
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mode = "s"
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output = None
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# Parse command-line arguments
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if len(sys.argv) == 1:
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print(help_string, file=sys.stderr)
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sys.exit(1)
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try:
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opts, args = getopt.gnu_getopt(sys.argv[1:], "hsbifo:",
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("help output="+modes).split())
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except getopt.GetoptError as error:
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err(error)
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sys.exit(1)
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for name, value in opts:
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# Print usage
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if name == "--help":
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err(help_string, file=sys.stderr)
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sys.exit(0)
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# TODO: fxconv: verbose mode
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elif name == "--verbose":
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pass
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elif name in [ "-o", "--output" ]:
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output = value
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# Other names are modes
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else:
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mode = name[1] if len(name)==2 else name[2]
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# Remaining arguments
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if args == []:
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err(f"execution mode -{mode} expects an input file")
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sys.exit(1)
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input = args.pop(0)
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# In --script mode, run the Python script with an augmented PYTHONPATH
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if mode == "s":
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if output is not None:
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warn("option --output is ignored in script mode")
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args = None if args == [] else args
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err("script mode not currently implemented (TODO) x_x")
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sys.exit(1)
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# In shortcut conversion modes, read parameters from the command-line
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else:
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def check(arg):
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if ':' not in arg:
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warn(f"argument {arg} is not a valid parameter (ignored)")
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return ':' in arg
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def insert(params, path, value):
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if len(path) == 1:
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params[path[0]] = value
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return
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if not path[0] in params:
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params[path[0]] = {}
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insert(params[path[0]], path[1:], value)
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args = [ arg.split(':', 1) for arg in args if check(arg) ]
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params = {}
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for (name, value) in args:
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insert(params, name.split("."), value)
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params["type"] = { "b": "binary", "i": "image", "f": "font" }[mode]
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fxconv.convert(input, params, output)
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main()
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