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Allow specifying multiple regexes to match in exec command output, and also to specify regexes that must _not_ match.

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This commit is contained in:
Alberto Gonzalez 2020-03-16 06:02:14 +00:00
parent e6c09f1e0e
commit 8ba49a8462
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GPG key ID: 8395A8BA109708B2
1 changed files with 67 additions and 33 deletions
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100
passes/cmds/exec.cc
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@ -35,41 +35,54 @@ struct ExecPass : public Pass {
log("\n");
log("Execute a command in the operating system shell. All supplied arguments are\n");
log("concatenated and passed as a command to popen(3). Whitespace is not guaranteed\n");
log("to be preserved, even if quoted. stdin is not connected, while stdout is\n");
log("logged and stderr is logged as a warning.\n");
log("to be preserved, even if quoted. stdin and stderr are not connected, while stdout is\n");
log("logged unless the \"-q\" option is specified.\n");
log("\n");
log("\n");
log(" -q\n");
log(" suppress stdout and stderr from subprocess\n");
log(" Suppress stdout and stderr from subprocess\n");
log("\n");
log(" -expected-return <int>\n");
log(" generates an error if popen() does not return specified value.\n");
log(" -expect-return <int>\n");
log(" Generate an error if popen() does not return specified value.\n");
log(" May only be specified once; the final specified value is controlling\n");
log(" if specified multiple times.\n");
log("\n");
log(" -expected-stdout <regex>\n");
log(" generates an error if specified regex does not match any line\n");
log(" in subprocess stdout.\n");
log(" -expect-stdout <regex>\n");
log(" Generate an error if the specified regex does not match any line\n");
log(" in subprocess's stdout. May be specified multiple times.\n");
log("\n");
log(" -not-expect-stdout <regex>\n");
log(" Generate an error if the specified regex matches any line\n");
log(" in subprocess's stdout. May be specified multiple times.\n");
log("\n");
log("\n");
log(" Example: exec -q -expected-return 0 -- echo \"bananapie\" | grep \"nana\"\n");
log(" Example: exec -q -expect-return 0 -- echo \"bananapie\" | grep \"nana\"\n");
log("\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
{
if(args.size() == 0)
log_cmd_error("No command provided.\n");
std::string cmd = "";
char buf[4096] = {};
std::string linebuf = "";
bool flag_cmd = false;
bool flag_quiet = false;
bool flag_expected_return = false;
bool flag_expected_stdout = false;
int expected_return_value = 0;
YS_REGEX_TYPE expected_stdout_re;
std::string expected_stdout_re_str;
bool expected_stdout_re_matched = false;
bool flag_expect_return = false;
int expect_return_value = 0;
bool flag_expect_stdout = false;
struct expect_stdout_elem {
bool matched;
bool polarity; //true: this regex must match at least one line
//false: this regex must not match any line
std::string str;
YS_REGEX_TYPE re;
expect_stdout_elem() : matched(false), polarity(true), str(), re(){};
};
std::vector<expect_stdout_elem> expect_stdout;
if(args.size() == 0)
log_cmd_error("No command provided.\n");
for(size_t argidx = 1; argidx < args.size(); ++argidx) {
if (flag_cmd) {
@ -79,24 +92,41 @@ struct ExecPass : public Pass {
flag_cmd = true;
else if (args[argidx] == "-q")
flag_quiet = true;
else if (args[argidx] == "-expected-return") {
flag_expected_return = true;
else if (args[argidx] == "-expect-return") {
flag_expect_return = true;
++argidx;
if (argidx >= args.size())
log_cmd_error("No expected return value specified.\n");
expected_return_value = atoi(args[argidx].c_str());
} else if (args[argidx] == "-expected-stdout") {
flag_expected_stdout = true;
expect_return_value = atoi(args[argidx].c_str());
} else if (args[argidx] == "-expect-stdout") {
flag_expect_stdout = true;
++argidx;
if (argidx >= args.size())
log_cmd_error("No expected regular expression to find in stdout specified.\n");
log_cmd_error("No expected regular expression specified.\n");
try{
expected_stdout_re_str = args[argidx];
expected_stdout_re = YS_REGEX_COMPILE(args[argidx]);
expect_stdout_elem x;
x.str = args[argidx];
x.re = YS_REGEX_COMPILE(args[argidx]);
expect_stdout.push_back(x);
} catch (const YS_REGEX_NS::regex_error& e) {
log_cmd_error("Error in regex expression '%s' !\n", expected_stdout_re_str.c_str());
log_cmd_error("Error in regex expression '%s' !\n", args[argidx].c_str());
}
} else if (args[argidx] == "-not-expect-stdout") {
flag_expect_stdout = true;
++argidx;
if (argidx >= args.size())
log_cmd_error("No expected regular expression specified.\n");
try{
expect_stdout_elem x;
x.str = args[argidx];
x.re = YS_REGEX_COMPILE(args[argidx]);
x.polarity = false;
expect_stdout.push_back(x);
} catch (const YS_REGEX_NS::regex_error& e) {
log_cmd_error("Error in regex expression '%s' !\n", args[argidx].c_str());
}
} else
@ -124,8 +154,10 @@ struct ExecPass : public Pass {
if (!flag_quiet)
log("%s\n", line.c_str());
if(YS_REGEX_NS::regex_search(line, expected_stdout_re))
expected_stdout_re_matched = true;
if (flag_expect_stdout)
for(auto &x : expect_stdout)
if (YS_REGEX_NS::regex_search(line, x.re))
x.matched = true;
pos = linebuf.find('\n');
}
@ -143,11 +175,13 @@ struct ExecPass : public Pass {
retval = WSTOPSIG(status);
}
if (flag_expected_return && retval != expected_return_value)
log_cmd_error("Return value %d did not match expected return value %d.\n", retval, expected_return_value);
if (flag_expect_return && retval != expect_return_value)
log_cmd_error("Return value %d did not match expected return value %d.\n", retval, expect_return_value);
if (flag_expected_stdout && !expected_stdout_re_matched)
log_cmd_error("Command stdout did not have a line matching given regex \"%s\".\n", expected_stdout_re_str.c_str());
if (flag_expect_stdout)
for (auto &x : expect_stdout)
if (x.polarity ^ x.matched)
log_cmd_error("Command stdout did%s have a line matching given regex \"%s\".\n", (x.polarity? " not" : ""), x.str.c_str());
log_pop();
}