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[njs] Shell: executing command from command line arguments.

Dmitry Volyntsev
May 07, 2019 12:52PM
details: https://hg.nginx.org/njs/rev/1b95bc101b4c
branches:
changeset: 956:1b95bc101b4c
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Tue May 07 19:50:39 2019 +0300
description:
Shell: executing command from command line arguments.

diffstat:

njs/njs_shell.c | 31 ++++++++++++++++++++++++++++++-
njs/test/njs_expect_test.exp | 6 ++++++
2 files changed, 36 insertions(+), 1 deletions(-)

diffs (94 lines):

diff -r 6adf4063e1bb -r 1b95bc101b4c njs/njs_shell.c
--- a/njs/njs_shell.c Tue May 07 19:50:38 2019 +0300
+++ b/njs/njs_shell.c Tue May 07 19:50:39 2019 +0300
@@ -38,6 +38,7 @@ typedef struct {
uint8_t version;

char *file;
+ char *command;
size_t n_paths;
char **paths;
} njs_opts_t;
@@ -211,8 +212,10 @@ int
main(int argc, char **argv)
{
char path[MAXPATHLEN], *p;
+ njs_vm_t *vm;
nxt_int_t ret;
njs_opts_t opts;
+ nxt_str_t command;
njs_vm_opt_t vm_options;

nxt_memzero(&opts, sizeof(njs_opts_t));
@@ -240,7 +243,13 @@ main(int argc, char **argv)
goto done;
}

- memcpy(path + nxt_strlen(path), "/shell", sizeof("/shell"));
+ if (opts.command == NULL) {
+ memcpy(path + nxt_strlen(path), "/shell", sizeof("/shell"));
+
+ } else {
+ memcpy(path + nxt_strlen(path), "/string", sizeof("/string"));
+ }
+
opts.file = path;
}

@@ -260,6 +269,14 @@ main(int argc, char **argv)
if (opts.interactive) {
ret = njs_interactive_shell(&opts, &vm_options);

+ } else if (opts.command) {
+ vm = njs_create_vm(&opts, &vm_options);
+ if (vm != NULL) {
+ command.start = (u_char *) opts.command;
+ command.length = nxt_strlen(opts.command);
+ ret = njs_process_script(vm_options.external, &opts, &command);
+ }
+
} else {
ret = njs_process_file(&opts, &vm_options);
}
@@ -284,6 +301,7 @@ njs_get_options(njs_opts_t *opts, int ar
"Interactive njs shell.\n"
"\n"
"Options:\n"
+ " -c specify the command to execute.\n"
" -d print disassembled code.\n"
" -p set path prefix for modules.\n"
" -q disable interactive introduction prompt.\n"
@@ -312,6 +330,17 @@ njs_get_options(njs_opts_t *opts, int ar
(void) write(STDIN_FILENO, help, nxt_length(help));
return ret;

+ case 'c':
+ opts->interactive = 0;
+
+ if (++i < argc) {
+ opts->command = argv[i];
+ break;
+ }
+
+ nxt_error("option \"-c\" requires argument\n");
+ return NXT_ERROR;
+
case 'd':
opts->disassemble = 1;
break;
diff -r 6adf4063e1bb -r 1b95bc101b4c njs/test/njs_expect_test.exp
--- a/njs/test/njs_expect_test.exp Tue May 07 19:50:38 2019 +0300
+++ b/njs/test/njs_expect_test.exp Tue May 07 19:50:39 2019 +0300
@@ -649,6 +649,12 @@ njs_run "-p njs/test/module ./njs/test/m

njs_run "-h" "Interactive njs shell.\r\n\r\nOptions:"

+# command
+
+njs_run "-c 'console.log(\"a b c\")'" "a b c"
+
+njs_run "-c 'console.log('" "SyntaxError: Unexpected token \"\" in string:1"
+
# disassemble

njs_test {
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[njs] Shell: executing command from command line arguments.

Dmitry Volyntsev 154 May 07, 2019 12:52PM



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