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Full Discussion: Format your scripts with shfmt
Top Forums Shell Programming and Scripting Format your scripts with shfmt Post 302981219 by bakunin on Thursday 8th of September 2016 03:14:04 PM
Old 09-08-2016
I will try to give you program a test run but lacking go it will take me a few days.

Quote:
Originally Posted by mvdan
The style itself is influenced both by what's most used in the wild and Google's shell style:

https://google.github.io/styleguide/...xml#Formatting
To be honest i haven't noticed this styleguide at all until today. Several things in there are IMHO rather questionable and my suggestion is that you shouldn't rely on that at all. Here are my main objections:
  • Bash is the only shell scripting language permitted for executables.
    Nonsense! Many applications prescribe a certain shell (SAP for instance enforces csh for system users) and to maintain a supported system you have to respect that, even if (conceivably) unhappy about it. Other systems (like the AIX i work on) use ksh, which IMHO is even better suited to shell programming than bash. But that is my opinion and to say "use this shell" or "use that shell" is like saying "only walk with your left foot" - ridiculous.
  • Shell should only be used for small utilities or simple wrapper scripts.
    ROFLMAO! Some of the scripts i maintain are several thousand lines long and contain calls to a shell library of functions which also is several thousand lines of code worth.
  • [[ ... ]] is preferred over [, test and /usr/bin/[.
    It is exactly the other way round: use "[ ... ]" instead of "[[ ... ]]" if you want to write portable scripts.
  • Indent 2 spaces. No tabs.
    I can understand the "no tabs", but 2 spaces is uncomfortable for some. I use 5 spaces, because it makes indentation standing out clearly (IMHO), but again: this is personal preference. A reformatter should be configurable in this regard. The same goes for:
  • Put ; do and ; then on the same line as the while, for or if.
    I like that style better than putting do/then in the next line, but that also is personal preference! It should be configurable in a reformatter.
  • Use process substitution or for loops in preference to piping to while.
    This takes the biscuit! Consider for foo in $(command) ; do: if command produces too many output words your foor-loop will crash with a "too many arguments" while the while-loop with the pipeline has no such limitations.
  • Naming Conventions
    This is just one more way to do things in a somewhat consistent way. Personally i am a fan of Hungarian-style Notation, which i use in a variation suited to shell programming: "ch" as prefix for strings (char), "i" for integers, "f" for file-/directory names, "p" (procedure) for local functions, "f_" for library functions, etc. Any system will do, as long as you consistently use it. Personally i also find Mixed case to be easier to read and write than the underscore-separated words. If pReadAttributeFromItem() or read_attribute_from_item() is better is everybodies guess, but i think it is personal preference.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
rbatte1
 

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