run-tests: extract usage message

Put the usage message near the top of the script,
into a separate function.

Closes GH-5558.

Author: gerardroche

run-tests.php

@@ -31,6 +31,97 @@
  * Minimum required PHP version: 7.0.0
  */
 
+function show_usage()
+{
+    echo <<<HELP
+Synopsis:
+    php run-tests.php [options] [files] [directories]
+
+Options:
+    -j<workers> Run up to <workers> simultaneous testing processes in parallel for
+                quicker testing on systems with multiple logical processors.
+                Note that this is experimental feature.
+
+    -l <file>   Read the testfiles to be executed from <file>. After the test
+                has finished all failed tests are written to the same <file>.
+                If the list is empty and no further test is specified then
+                all tests are executed (same as: -r <file> -w <file>).
+
+    -r <file>   Read the testfiles to be executed from <file>.
+
+    -w <file>   Write a list of all failed tests to <file>.
+
+    -a <file>   Same as -w but append rather then truncating <file>.
+
+    -W <file>   Write a list of all tests and their result status to <file>.
+
+    -c <file>   Look for php.ini in directory <file> or use <file> as ini.
+
+    -n          Pass -n option to the php binary (Do not use a php.ini).
+
+    -d foo=bar  Pass -d option to the php binary (Define INI entry foo
+                with value 'bar').
+
+    -g          Comma separated list of groups to show during test run
+                (possible values: PASS, FAIL, XFAIL, XLEAK, SKIP, BORK, WARN, LEAK, REDIRECT).
+
+    -m          Test for memory leaks with Valgrind (equivalent to -M memcheck).
+
+    -M <tool>   Test for errors with Valgrind tool.
+
+    -p <php>    Specify PHP executable to run.
+
+    -P          Use PHP_BINARY as PHP executable to run (default).
+
+    -q          Quiet, no user interaction (same as environment NO_INTERACTION).
+
+    -s <file>   Write output to <file>.
+
+    -x          Sets 'SKIP_SLOW_TESTS' environmental variable.
+
+    --offline   Sets 'SKIP_ONLINE_TESTS' environmental variable.
+
+    --verbose
+    -v          Verbose mode.
+
+    --help
+    -h          This Help.
+
+    --html <file> Generate HTML output.
+
+    --temp-source <sdir>  --temp-target <tdir> [--temp-urlbase <url>]
+                Write temporary files to <tdir> by replacing <sdir> from the
+                filenames to generate with <tdir>. If --html is being used and
+                <url> given then the generated links are relative and prefixed
+                with the given url. In general you want to make <sdir> the path
+                to your source files and <tdir> some patch in your web page
+                hierarchy with <url> pointing to <tdir>.
+
+    --keep-[all|php|skip|clean]
+                Do not delete 'all' files, 'php' test file, 'skip' or 'clean'
+                file.
+
+    --set-timeout [n]
+                Set timeout for individual tests, where [n] is the number of
+                seconds. The default value is 60 seconds, or 300 seconds when
+                testing for memory leaks.
+
+    --show-[all|php|skip|clean|exp|diff|out|mem]
+                Show 'all' files, 'php' test file, 'skip' or 'clean' file. You
+                can also use this to show the output 'out', the expected result
+                'exp', the difference between them 'diff' or the valgrind log
+                'mem'. The result types get written independent of the log format,
+                however 'diff' only exists when a test fails.
+
+    --show-slow [n]
+                Show all tests that took longer than [n] milliseconds to run.
+
+    --no-clean  Do not execute clean section if any.
+
+
+HELP;
+}
+
 /**
  * One function to rule them all, one function to find them, one function to
  * bring them all and in the darkness bind them.
@@ -530,92 +621,7 @@ function main()
                 case 'h':
                 case '-help':
                 case '--help':
-                    echo <<<HELP
-Synopsis:
-    php run-tests.php [options] [files] [directories]
-
-Options:
-    -j<workers> Run up to <workers> simultaneous testing processes in parallel for
-                quicker testing on systems with multiple logical processors.
-                Note that this is experimental feature.
-
-    -l <file>   Read the testfiles to be executed from <file>. After the test
-                has finished all failed tests are written to the same <file>.
-                If the list is empty and no further test is specified then
-                all tests are executed (same as: -r <file> -w <file>).
-
-    -r <file>   Read the testfiles to be executed from <file>.
-
-    -w <file>   Write a list of all failed tests to <file>.
-
-    -a <file>   Same as -w but append rather then truncating <file>.
-
-    -W <file>   Write a list of all tests and their result status to <file>.
-
-    -c <file>   Look for php.ini in directory <file> or use <file> as ini.
-
-    -n          Pass -n option to the php binary (Do not use a php.ini).
-
-    -d foo=bar  Pass -d option to the php binary (Define INI entry foo
-                with value 'bar').
-
-    -g          Comma separated list of groups to show during test run
-                (possible values: PASS, FAIL, XFAIL, XLEAK, SKIP, BORK, WARN, LEAK, REDIRECT).
-
-    -m          Test for memory leaks with Valgrind (equivalent to -M memcheck).
-
-    -M <tool>   Test for errors with Valgrind tool.
-
-    -p <php>    Specify PHP executable to run.
-
-    -P          Use PHP_BINARY as PHP executable to run (default).
-
-    -q          Quiet, no user interaction (same as environment NO_INTERACTION).
-
-    -s <file>   Write output to <file>.
-
-    -x          Sets 'SKIP_SLOW_TESTS' environmental variable.
-
-    --offline   Sets 'SKIP_ONLINE_TESTS' environmental variable.
-
-    --verbose
-    -v          Verbose mode.
-
-    --help
-    -h          This Help.
-
-    --html <file> Generate HTML output.
-
-    --temp-source <sdir>  --temp-target <tdir> [--temp-urlbase <url>]
-                Write temporary files to <tdir> by replacing <sdir> from the
-                filenames to generate with <tdir>. If --html is being used and
-                <url> given then the generated links are relative and prefixed
-                with the given url. In general you want to make <sdir> the path
-                to your source files and <tdir> some patch in your web page
-                hierarchy with <url> pointing to <tdir>.
-
-    --keep-[all|php|skip|clean]
-                Do not delete 'all' files, 'php' test file, 'skip' or 'clean'
-                file.
-
-    --set-timeout [n]
-                Set timeout for individual tests, where [n] is the number of
-                seconds. The default value is 60 seconds, or 300 seconds when
-                testing for memory leaks.
-
-    --show-[all|php|skip|clean|exp|diff|out|mem]
-                Show 'all' files, 'php' test file, 'skip' or 'clean' file. You
-                can also use this to show the output 'out', the expected result
-                'exp', the difference between them 'diff' or the valgrind log
-                'mem'. The result types get written independent of the log format,
-                however 'diff' only exists when a test fails.
-
-    --show-slow [n]
-                Show all tests that took longer than [n] milliseconds to run.
-
-    --no-clean  Do not execute clean section if any.
-
-HELP;
+                    show_usage();
                     exit(1);
             }
         }