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Use perl instead of sed #63

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Merged
simon-ess merged 6 commits into from
Jan 21, 2026
Merged

Use perl instead of sed #63

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4668a83
Use perl instead of sed
FreddieAkeroyd Oct 27, 2024
31717d4
Use standalone perl script
FreddieAkeroyd Oct 29, 2024
1b211d2
Remove append
FreddieAkeroyd Oct 29, 2024
3b07e0f
Tidy up perl script to use here doc
FreddieAkeroyd Jun 9, 2025
45ed5c0
Add usage
FreddieAkeroyd Jun 9, 2025
8b137c6
Unique-ify the output of genSiteEnvVars.pl
simon-ess Dec 18, 2025
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8 changes: 2 additions & 6 deletions iocAdmin/Db/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -48,9 +48,5 @@ $(COMMON_DIR)/iocAdminVxWorks.db: $(COMMON_DIR)/iocAdminScanMon.db $(COMMON_DIR)

$(COMMON_DIR)/siteEnvVars.substitutions: $(EPICS_BASE)/configure/CONFIG_SITE_ENV $(EPICS_BASE)/configure/CONFIG_ENV
@echo Expanding siteEnvVars.substitutions from $^....
@echo file iocEnvVar.template > $@
@echo { >> $@
@echo pattern >> $@
@echo { ENVNAME, ENVVAR, ENVTYPE } >> $@
@sed -n "s/^EPICS_\([A-Z_]*\).*/{\1, EPICS_\1, epics}/p" $^ >> $@
@echo } >> $@
@$(RM) $@
@$(PERL) ../genSiteEnvVars.pl $^ > $@
29 changes: 29 additions & 0 deletions iocAdmin/Db/genSiteEnvVars.pl
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@@ -0,0 +1,29 @@
#!/usr/bin/env perl
#
# Usage: genSiteEnvVars.pl CONFIG_SITE_ENV [ ... ]
#
# Reads an EPICS CONFIG_SITE_ENV file and outputs
# a substitutions file to generate appropriate EPICS
# records for those variables via iocEnvVar.template
#
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use strict;
use warnings;

print <<__END__;
file "iocEnvVar.template" {
pattern { ENVNAME, ENVVAR, ENVTYPE }
__END__

my @epics_vars;
while(<>) {
my $m = s/^EPICS_([A-Z_0-9]*).*\n/${1}/;
push(@epics_vars, $_) if $m;
}

my %varcount;
my @unique_vars = grep { not $varcount{$_}++ } @epics_vars;

foreach (@unique_vars) {
print "{ $_, EPICS_$_, epics }\n"
}
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@anjohnson anjohnson Jan 20, 2026

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This could be written on one line instead of 3, but I doubt if there'd be any measurable performance difference:

print "{ $_, EPICS_$_, epics }\n" for @unique_vars;

print("}\n");