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diff --git a/source/blog/2015-05-22-using-a-command-table-as-wallpaper.md b/source/blog/2015-05-22-using-a-command-table-as-wallpaper.md deleted file mode 100644 index 7e3e6fcc..00000000 --- a/source/blog/2015-05-22-using-a-command-table-as-wallpaper.md +++ /dev/null @@ -1,161 +0,0 @@ ---- -title: "Using a command table as wallpaper" -date: 2015-05-22T00:48:19-07:00 -date_display: May 22, 2015 ---- - -Recently I cleaned up my source code directory, removed a lot of rarely-used, dated scripts, and grouped the remaining standalone scripts into a central place (`~/dev/scripts`)[^dev]. One thing I learned in this process is that I tend to write a reusable script but rarely actually reuse it (even if it sits on `PATH`), sometimes implementing the same functionality twice or typing a long command line over and over again. - -[^dev]: The `~/dev` directory stands for development, and contains all my source code and almost all local builds. The point is by having a `~/dev` directory, I no longer need to have `bin`, `include`, `lib`, and `share` in my `HOME`, thus saving a few slots. Backing up and restoring is also slightly easier. - -To remind myself of which scripts are at my fingertip, I decided to use a command table as wallpaper on my secondary display. So I wrote a shitty Python script[^shitty] (depending on XeLaTeX and ImageMagick) to automate the generation of such a wallpaper. It's pretty customizable, and anyone may grab it and do whatever they want to with it (also [available as a gist](https://gist.github.com/zmwangx/b06aa923abf061b33fc9)): - -[^shitty]: Yeah, I know it's a shitty script, so don't nitpick on style problems. - -```python -#!/usr/bin/env python3 - -"""Generate command table.""" - -import argparse -import os -import shlex -import subprocess -import sys -import tempfile - -# pylint: disable=wildcard-import,unused-wildcard-import - -from zmwangx.colorout import * - -DEFAULT_COLUMN_WIDTH = 120 -DEFAULT_FOREGROUND_COLOR = "white" -DEFAULT_BACKGROUND_COLOR = "black" -DEFAULT_FONT = "Consolas" -DEFAULT_BORDER = 20 -DEFAULT_DENSITY = 300 -DEFAULT_SIZE = "1280x800" - -HERE = os.path.dirname(os.path.realpath(sys.argv[0])) -XELATEX_PROGRAM = (r""" -\documentclass[varwidth=\maxdimen,border={border}pt]{{standalone}} -\usepackage{{color}} -\pagecolor{{{background}}} -\color{{{foreground}}} -\usepackage{{fontspec}} -\setmonofont{{{font}}} - -\begin{{document}} -\begin{{verbatim}} -{table} -\end{{verbatim}} -\end{{document}} -""") - -def text_table(**kwargs): - """Generate the text version of the table.""" - width = kwargs["width"] if "width" in kwargs else DEFAULT_COLUMN_WIDTH - directory = kwargs["directory"] if "directory" in kwargs else HERE - command_line = (r"find {directory} -maxdepth 1 -type f -perm -u=x -exec basename {{}} \; " - "| column -c {width} | expand".format( - directory=shlex.quote(directory), width=width)) - ccommand(command_line) - return subprocess.check_output(command_line, shell=True).decode("utf-8") - -def pdf_table(**kwargs): - """Generate the PDF version of the table. - - Returns 0 on success or 1 on failure. Generated PDF is "table.pdf" - in the current working directory. - - """ - border = kwargs["border"] if "border" in kwargs else DEFAULT_BORDER - foreground = kwargs["foreground"] if "foreground" in kwargs else DEFAULT_FOREGROUND_COLOR - background = kwargs["background"] if "background" in kwargs else DEFAULT_BACKGROUND_COLOR - font = kwargs["font"] if "font" in kwargs else DEFAULT_FONT - program = XELATEX_PROGRAM.format(table=text_table(**kwargs).strip(), - font=font, border=border, - foreground=foreground, background=background) - with open("table.tex", "w") as texfileobj: - texfileobj.write(program) - try: - ccommand("xelatex table.tex") - subprocess.check_call(["xelatex", "table.tex"], - stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL) - return 0 - except subprocess.CalledProcessError: - cerror("xelatex failed on the following program:") - cerrnewline() - cerrwrite("default", program) - return 1 - -def png_table(**kwargs): - """Generate the PNG version of the table. - - Returns 0 on success or 1 on failure. Generated PNG is "table.png" - in the current working directory. - - """ - if pdf_table(**kwargs) == 1: - return 1 - density = kwargs["density"] if "density" in kwargs else DEFAULT_DENSITY - size = kwargs["size"] if "size" in kwargs else DEFAULT_SIZE - background = kwargs["background"] if "background" in kwargs else DEFAULT_BACKGROUND_COLOR - command_line = ("convert -density {density} table.pdf -resize {size} -size {size} " - "xc:{background} +swap -gravity center -composite table.png".format( - density=density, size=size, background=background)) - try: - ccommand(command_line) - subprocess.check_call(shlex.split(command_line)) - return 0 - except subprocess.CalledProcessError: - cerror("the following ImageMagick command failed:") - cerrprint("default", command_line) - return 1 - -def main(): - """CLI.""" - description = "Generate a PNG table of all executable commands in a directory." - parser = argparse.ArgumentParser(description=description) - parser.add_argument("--width", type=int, default=DEFAULT_COLUMN_WIDTH, - help="""line width, default is 120""") - parser.add_argument("--directory", - help="""directory containing executables, default is - the directory containing this command""") - parser.add_argument("--border", type=int, default=DEFAULT_BORDER, - help="""default is 20pt""") - parser.add_argument("--foreground", default=DEFAULT_FOREGROUND_COLOR, - help="""foreground color, default is white""") - parser.add_argument("--background", default=DEFAULT_BACKGROUND_COLOR, - help="""background color, default is black""") - parser.add_argument("--font", default=DEFAULT_FONT, - help="""default is Consolas""") - parser.add_argument("--density", default=DEFAULT_DENSITY, - help="""used for the -density argument of convert, - default is 300""") - parser.add_argument("--size", default=DEFAULT_SIZE, - help="""size of image, default is 1280x800""") - args = parser.parse_args() - kwargs = {k: v for (k, v) in args.__dict__.items() if v is not None} - - fd, tmpfilepath = tempfile.mkstemp(suffix=".png", prefix="table-") - os.close(fd) - with tempfile.TemporaryDirectory(prefix="table-") as working_directory: - os.chdir(working_directory) - if png_table(**kwargs) == 1: - cerror("execution failed") - os.remove(tmpfilepath) - else: - os.rename("table.png", tmpfilepath) - cprogress("saved to:") - print(tmpfilepath) - -if __name__ == "__main__": - main() -``` - -By the way, the `zmwangx.colorout` module is [here](https://github.com/zmwangx/pyzmwangx/blob/41b0bffaad9439888d68097a85c7aed594240283/zmwangx/colorout.py), just to ease the printing of progress and errors to tty. You may safely remove all the `ccommand`, `cerr*` and `cprogress` calls. - -Here is an example wallpaper reflecting my current `~/dev/scripts`: - - |