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Merge pull request #1069 from akinomyoga/use-awk-for-make
refactor(make): Use awk to extract target names
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Original file line number | Diff line number | Diff line change |
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@@ -1,4 +1,4 @@ | ||
helpersdir = $(datadir)/$(PACKAGE)/helpers | ||
helpers_DATA = perl python | ||
helpers_DATA = perl python make-extract-targets.awk | ||
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EXTRA_DIST = $(helpers_DATA) |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,93 @@ | ||
# helper AWK script for GNU make -*- awk -*- | ||
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# This AWK script is used by the function `_comp_cmd_make__extract_targets` in | ||
# `completions/make`. This script receives the output of `make -npq' as the | ||
# input file or stdin and outputs the list of targets matching the prefix. | ||
# | ||
# @env prefix Specifies the prefix to match. | ||
# @env prefix_replace Specifies the string that replaces the prefix in the | ||
# output. This is used when we want to omit the directory name in showing | ||
# the list of the completions. | ||
# | ||
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BEGIN { | ||
prefix = ENVIRON["prefix"]; | ||
prefix_replace = ENVIRON["prefix_replace"]; | ||
is_target_block = 0; | ||
target = ""; | ||
} | ||
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function starts_with(str, prefix) { | ||
return substr(str, 1, length(prefix)) == prefix; | ||
} | ||
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# skip any makefile outputs | ||
NR == 1, /^# +Make data base/ { next; } | ||
/^# +Finished Make data base/,/^# +Make data base/ { next; } | ||
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# skip until files section | ||
/^# +Variables/, /^# +Files/ { next; } | ||
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# skip not-target blocks | ||
/^# +Not a target/, /^$/ { next; } | ||
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# The stuff above here describes lines that are not | ||
# explicit targets or not targets other than special ones | ||
# The stuff below here decides whether an explicit target | ||
# should be output. | ||
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# only process the targets the user wants. | ||
starts_with($0, prefix) { is_target_block = 1; } | ||
is_target_block == 0 { next; } | ||
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/^# +File is an intermediate prerequisite/ { # cancel the block | ||
is_target_block = 0; | ||
target = ""; | ||
next; | ||
} | ||
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# end of target block | ||
/^$/ { | ||
is_target_block = 0; | ||
if (target != "") { | ||
print target; | ||
target = ""; | ||
} | ||
next; | ||
} | ||
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# found target block | ||
/^[^#\t:%]+:/ { | ||
# special targets | ||
if (/^\.PHONY:/ ) next; | ||
if (/^\.SUFFIXES:/ ) next; | ||
if (/^\.DEFAULT:/ ) next; | ||
if (/^\.PRECIOUS:/ ) next; | ||
if (/^\.INTERMEDIATE:/ ) next; | ||
if (/^\.SECONDARY:/ ) next; | ||
if (/^\.SECONDEXPANSION:/ ) next; | ||
if (/^\.DELETE_ON_ERROR:/ ) next; | ||
if (/^\.IGNORE:/ ) next; | ||
if (/^\.LOW_RESOLUTION_TIME:/ ) next; | ||
if (/^\.SILENT:/ ) next; | ||
if (/^\.EXPORT_ALL_VARIABLES:/) next; | ||
if (/^\.NOTPARALLEL:/ ) next; | ||
if (/^\.ONESHELL:/ ) next; | ||
if (/^\.POSIX:/ ) next; | ||
if (/^\.NOEXPORT:/ ) next; | ||
if (/^\.MAKE:/ ) next; | ||
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# dont complete with hidden targets unless we are doing a partial completion | ||
if (prefix == "" || prefix ~ /\/$/) | ||
if (substr($0, length(prefix) + 1, 1) ~ /[^a-zA-Z0-9]/) | ||
next; | ||
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target = $0; | ||
sub(/:.*/, "", target); | ||
if (prefix_replace != prefix) | ||
target = prefix_replace substr(target, 1 + length(prefix)); | ||
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next; | ||
} | ||
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# ex: filetype=awk |
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