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Revision 9210

Added by Aaron Marcuse-Kubitza about 11 years ago

lib/sh/util.sh: renamed limit_stderr to limit_log_fd, stdout2stderr to stdout2log_fd to clarify their purpose. log_fd is currently assumed to be 2.

View differences:

util.sh
144 144 

  		




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err_fd=2 # stderr


  		




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# usage: (stdout2stderr; cmd...) || return


  		




  
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# usage: (stdout2log_fd; cmd...) || return


  		




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# `|| return` needed on Mac because of bug where -e doesn't apply to ()


  		




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stdout2stderr() { exec >&2; }


  		




  
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stdout2log_fd() { exec >&2; }


  		




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usage() { echo "Usage: $1" >&2; return 2; }


  		




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  ......




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### command verbose output


  		




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# usage: (limit_stderr; cmd...) || return


  		




  
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# usage: (limit_log_fd; cmd...) || return


  		




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# `|| return` needed on Mac because of bug where -e doesn't apply to ()


  		




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function limit_stderr() { if ! (log++; can_log); then disable_logging; fi; }


  		




  
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function limit_log_fd() { if ! (log++; can_log); then disable_logging; fi; }


  		




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### command echoing


  		




  ......




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## external commands


  		




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function command()


  		




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# usage: [limit_stderr=1] [limit_stdout=1] [stderr_is_errors=1] command \


  		




  
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# usage: [limit_log_fd=1] [limit_stdout=1] [stderr_is_errors=1] command \


  		




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# extern_cmd...


  		




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# to view only explicitly-displayed errors: explicit_errors_only=1 script...


  		




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{


  		




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	if test "$limit_stdout"; then local stdout2stderr=1 limit_stderr=1; fi


  		




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	local stderr_is_errors="${stderr_is_errors-$stdout2stderr}"


  		




  
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	if test "$limit_stdout"; then local stdout2log_fd=1 limit_log_fd=1; fi


  		




  
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	local stderr_is_errors="${stderr_is_errors-$stdout2log_fd}"


  		




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	cmd2rel_path; (echo_params; can_log) && indent || true


  		




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	(


  		




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		# the following redirections must happen in exactly this order


  		




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		if test "$limit_stderr"; then limit_stderr; fi


  		




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		if test "$stdout2stderr"; then stdout2stderr; fi


  		




  
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		if test "$limit_log_fd"; then limit_log_fd; fi


  		




  
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		if test "$stdout2log_fd"; then stdout2log_fd; fi


  		




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		if test "$stderr_is_errors"; then exec 2>&"$err_fd"; fi


  		




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		exec -- "$@" # -- so cmd name not treated as `exec` option


  		












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