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stdlib: Implement subst function.
[goals.git]
/
stdlib
/
prelude.gl
diff --git
a/stdlib/prelude.gl
b/stdlib/prelude.gl
index
f4ab20e
..
8315b6f
100644
(file)
--- a/
stdlib/prelude.gl
+++ b/
stdlib/prelude.gl
@@
-38,6
+38,20
@@
tactic *exists (filename) = @{
}
#----------------------------------------------------------------------
}
#----------------------------------------------------------------------
+# Basic functions.
+
+# Wrap list of strings in a call or tactic.
+pure function wrap (wrapper, xs) = @{
+ echo '['
+ for x in %xs; do
+ echo %wrapper "( "
+ quoted_string "$x"
+ echo " ),"
+ done
+ echo ']'
+}
+
+#----------------------------------------------------------------------
# Text functions.
# Sort + uniq a list.
# Text functions.
# Sort + uniq a list.
@@
-45,6
+59,13
@@
pure function sort (xs) returning strings = @{
for f in %xs; do echo "$f"; done | sort -u
}
for f in %xs; do echo "$f"; done | sort -u
}
+# Substitute.
+pure function subst (from, to, text) returning string = @{
+ # We need to replace any / characters in ‘to’ with escaped ones.
+ to="$( echo -n %to | sed 's,/,\\/,g' )"
+ echo %text | sed -E s/%from/$to/g
+}
+
#----------------------------------------------------------------------
# File functions.
#----------------------------------------------------------------------
# File functions.