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Catch exception in replaceEnvironmentPath

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This exception in the regex constructor is only theoretical (our regex
are hardcoded), but this is creating coverity noise.

Additionally, revert the following commits that are not needed anymore:
6b6fa94c: Catch exceptions to please coverity
c2ed75fd: Fixup 6b6fa94c: coverity says there are more possible exceptions.

This commit is better viewed with 'git show -b'.
This commit is contained in:
Jean-Marc Lasgouttes 2018-06-04 10:51:11 +02:00
parent 08afacc239
commit 32f37250d5
3 changed files with 46 additions and 47 deletions
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58
src/LyX.cpp
View File

@ -471,45 +471,39 @@ void LyX::earlyExit(int status)
int LyX::init(int & argc, char * argv[])
{
try {
// check for any spurious extra arguments
// other than documents
for (int argi = 1; argi < argc ; ++argi) {
if (argv[argi][0] == '-') {
lyxerr << to_utf8(
bformat(_("Wrong command line option `%1$s'. Exiting."),
from_utf8(os::utf8_argv(argi)))) << endl;
return EXIT_FAILURE;
}
}
// Initialization of LyX (reads lyxrc and more)
LYXERR(Debug::INIT, "Initializing LyX::init...");
bool success = init();
LYXERR(Debug::INIT, "Initializing LyX::init...done");
if (!success)
return EXIT_FAILURE;
// Remaining arguments are assumed to be files to load.
for (int argi = 1; argi < argc; ++argi)
pimpl_->files_to_load_.push_back(os::utf8_argv(argi));
if (!use_gui && pimpl_->files_to_load_.empty()) {
lyxerr << to_utf8(_("Missing filename for this operation.")) << endl;
// check for any spurious extra arguments
// other than documents
for (int argi = 1; argi < argc ; ++argi) {
if (argv[argi][0] == '-') {
lyxerr << to_utf8(
bformat(_("Wrong command line option `%1$s'. Exiting."),
from_utf8(os::utf8_argv(argi)))) << endl;
return EXIT_FAILURE;
}
}
if (first_start) {
pimpl_->files_to_load_.push_back(
i18nLibFileSearch("examples", "splash.lyx").absFileName());
}
// Initialization of LyX (reads lyxrc and more)
LYXERR(Debug::INIT, "Initializing LyX::init...");
bool success = init();
LYXERR(Debug::INIT, "Initializing LyX::init...done");
if (!success)
return EXIT_FAILURE;
return EXIT_SUCCESS;
// Remaining arguments are assumed to be files to load.
for (int argi = 1; argi < argc; ++argi)
pimpl_->files_to_load_.push_back(os::utf8_argv(argi));
} catch (exception const &e) {
// This can happen _in_theory_ in replaceEnvironmentPath
lyxerr << "Caught exception `" << e.what() << "'." << endl;
if (!use_gui && pimpl_->files_to_load_.empty()) {
lyxerr << to_utf8(_("Missing filename for this operation.")) << endl;
return EXIT_FAILURE;
}
if (first_start) {
pimpl_->files_to_load_.push_back(
i18nLibFileSearch("examples", "splash.lyx").absFileName());
}
return EXIT_SUCCESS;
}

5
src/Server.cpp
View File

@ -1067,10 +1067,7 @@ Server::~Server()
string message;
for (int i = 0; i != numclients_; ++i) {
message = "LYXSRV:" + clients_[i] + ":bye\n";
// ignore exceptions, we are quitting anyway
try {
pipes_.send(message);
} catch (...) {}
pipes_.send(message);
}
}

30
src/support/filetools.cpp
View File

@ -686,19 +686,27 @@ string const replaceEnvironmentPath(string const & path)
// $[A-Za-z_][A-Za-z_0-9]*
static string const envvar = "[$]([A-Za-z_][A-Za-z_0-9]*)";
static regex const envvar_br_re("(.*)" + envvar_br + "(.*)");
static regex const envvar_re("(.*)" + envvar + "(.*)");
string result = path;
while (1) {
smatch what;
if (!regex_match(result, what, envvar_br_re)) {
if (!regex_match(result, what, envvar_re))
break;
// Coverity thinks that the regex constructor can return an
// exception. We know that it is not true since our regex are
// hardcoded, but we have to protect against that nevertheless.
try {
static regex const envvar_br_re("(.*)" + envvar_br + "(.*)");
static regex const envvar_re("(.*)" + envvar + "(.*)");
string result = path;
while (1) {
smatch what;
if (!regex_match(result, what, envvar_br_re)) {
if (!regex_match(result, what, envvar_re))
break;
}
string env_var = getEnv(what.str(2));
result = what.str(1) + env_var + what.str(3);
}
string env_var = getEnv(what.str(2));
result = what.str(1) + env_var + what.str(3);
return result;
} catch (exception const & e) {
LYXERR0("Something is very wrong: " << e.what());
return path;
}
return result;
}