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Revision 9026

Added by Aaron Marcuse-Kubitza about 11 years ago

lib/sh/util.sh: renamed save_e () to save_e_cmd () since it actually runs a command, in addition to saving $?

View differences:

lib/sh/util.sh
51 51 
fi # load new aliases
52 52 
if self_being_included; then
53 53 

  		




  54
  
  
    
# usage: save_e cmd... || { use $e (or $?); rethrow; }


  		




  55
  
  
    
function save_e () { "$@"; e=$?; rethrow; } # rethrow because e= clears $?


  		




  56
  
  
    
alias save_e='declare e; save_e ' # last space alias-expands next word


  		




  
  54
  
    
# usage: save_e_cmd cmd... || { use $e (or $?); rethrow; }


  		




  
  55
  
    
function save_e_cmd () { "$@"; e=$?; rethrow; } # rethrow because e= clears $?


  		




  
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alias save_e_cmd='declare e; save_e_cmd ' # last space alias-expands next word


  		




  57
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function log_e () # usage: log_e cmd... [ || use $e (or $?) ]


  		




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{


  		




  ......




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# usage: try cmd...; ignore status; if catch status; then ...; fi; end_try


  		




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function try () { "save_e" "$@" || true; }


  		




  
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function try () { "save_e_cmd" "$@" || true; }


  		




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alias try='declare e; try ' # last space alias-expands next word


  		




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catch () { test "$e" -eq "$1"; e=0; }


  		




  ......




  99
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let () { builtin let "$@" || true; }


  		




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	# "If the last ARG evaluates to 0, let returns 1" (`help let`)


  		




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bool2int () { save_e test -z "$1"; echo "$e"; } # empty->0; non-empty->1


  		




  
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bool2int () { save_e_cmd test -z "$1"; echo "$e"; } # empty->0; non-empty->1


  		




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#### arrays


  		












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