Add $process.run() and $process.run_regex() functions

$process.run(<prog>[ <args>...])

Return trimmed stdout.

$process.run_regex(<prog>[ <args>...], <pat> [, <fmt>])

Return stdout lines matched and optionally processed with regex.

Each line of stdout (including the customary trailing blank) is matched (as a
whole) against <pat> and, if successful, returned, optionally processed with
<fmt>, as an element of a list.

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/function/process/testscript b/tests/function/process/testscript
new file mode 100644
index 0000000..f01af6f
--- /dev/null
+++ b/tests/function/process/testscript
@@ -0,0 +1,30 @@
+# file      : tests/function/process/testscript
+# copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+.include ../../common.test
+
+: run
+:
+$* <<EOI >>~/EOO/
+print $process.run($build.path --version)
+EOI
+/build2 .+/
+/.+/*
+EOO
+
+: run-regex-match
+:
+$* <<EOI >>~/EOO/
+print $process.run_regex($build.path --version, 'build2 .+')
+EOI
+/build2 .+/
+EOO
+
+: run-regex-replace
+:
+$* <<EOI >>~/EOO/
+print $process.run_regex($build.path --version, 'build2 ([0-9.]+).*', '\1')
+EOI
+/[0-9]+.[0-9]+.[0-9]+/d
+EOO