wcstring parser_t::current_line()
{
if (execution_contexts.empty())
{
return wcstring();
}
const parse_execution_context_t *context = execution_contexts.back();
assert(context != NULL);
int source_offset = context->get_current_source_offset();
if (source_offset < 0)
{
return wcstring();
}
const int lineno = this->get_lineno();
const wchar_t *file = this->current_filename();
wcstring prefix;
/* If we are not going to print a stack trace, at least print the line number and filename */
if (!get_is_interactive() || is_function())
{
if (file)
{
append_format(prefix, _(L"%ls (line %d): "), user_presentable_path(file).c_str(), lineno);
}
else if (is_within_fish_initialization)
{
append_format(prefix, L"%ls: ", _(L"Startup"), lineno);
}
else
{
append_format(prefix, L"%ls: ", _(L"Standard input"), lineno);
}
}
bool is_interactive = get_is_interactive();
bool skip_caret = is_interactive && ! is_function();
/* Use an error with empty text */
assert(source_offset >= 0);
parse_error_t empty_error = {};
empty_error.source_start = source_offset;
wcstring line_info = empty_error.describe_with_prefix(context->get_source(), prefix, is_interactive, skip_caret);
if (! line_info.empty())
{
line_info.push_back(L'\n');
}
line_info.append(this->stack_trace());
return line_info;
}
void parser_t::get_backtrace(const wcstring &src, const parse_error_list_t &errors, wcstring *output) const
{
assert(output != NULL);
if (! errors.empty())
{
const parse_error_t &err = errors.at(0);
const bool is_interactive = get_is_interactive();
// Determine if we want to try to print a caret to point at the source error
// The err.source_start <= src.size() check is due to the nasty way that slices work,
// which is by rewriting the source (!)
size_t which_line = 0;
bool skip_caret = true;
if (err.source_start != SOURCE_LOCATION_UNKNOWN && err.source_start <= src.size())
{
// Determine which line we're on
which_line = 1 + std::count(src.begin(), src.begin() + err.source_start, L'\n');
// Don't include the caret if we're interactive, this is the first line of text, and our source is at its beginning, because then it's obvious
skip_caret = (is_interactive && which_line == 1 && err.source_start == 0);
}
wcstring prefix;
const wchar_t *filename = this->current_filename();
if (filename)
{
if (which_line > 0)
{
prefix = format_string(_(L"%ls (line %lu): "), user_presentable_path(filename).c_str(), which_line);
}
else
{
prefix = format_string(_(L"%ls: "), user_presentable_path(filename).c_str());
}
}
else
{
prefix = L"fish: ";
}
const wcstring description = err.describe_with_prefix(src, prefix, is_interactive, skip_caret);
if (! description.empty())
{
output->append(description);
output->push_back(L'\n');
}
output->append(this->stack_trace());
}
}
/**
Properly sets all locale information
*/
static void handle_locale()
{
const env_var_t lc_all = env_get_string(L"LC_ALL");
const wcstring old_locale = wsetlocale(LC_MESSAGES, NULL);
/*
Array of locale constants corresponding to the local variable names defined in locale_variable
*/
static const int cat[] =
{
0,
LC_ALL,
LC_COLLATE,
LC_CTYPE,
LC_MESSAGES,
LC_MONETARY,
LC_NUMERIC,
LC_TIME
}
;
if (!lc_all.missing())
{
wsetlocale(LC_ALL, lc_all.c_str());
}
else
{
const env_var_t lang = env_get_string(L"LANG");
if (!lang.missing())
{
wsetlocale(LC_ALL, lang.c_str());
}
for (int i=2; locale_variable[i]; i++)
{
const env_var_t val = env_get_string(locale_variable[i]);
if (!val.missing())
{
wsetlocale(cat[i], val.c_str());
}
}
}
const wcstring new_locale = wsetlocale(LC_MESSAGES, NULL);
if (old_locale != new_locale)
{
/*
Try to make change known to gettext. Both changing
_nl_msg_cat_cntr and calling dcgettext might potentially
tell some gettext implementation that the translation
strings should be reloaded. We do both and hope for the
best.
*/
extern int _nl_msg_cat_cntr;
_nl_msg_cat_cntr++;
fish_dcgettext("fish", "Changing language to English", LC_MESSAGES);
if (get_is_interactive())
{
debug(2, _(L"Changing language to English"));
}
}
}