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Experiment with scan buffering

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This commit is contained in:
Victor Zverovich
2023-12-02 09:34:27 -08:00
parent 71bd51e6c2
commit 5d55375a8a
2 changed files with 138 additions and 49 deletions
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test/scan-test.cc
+14 -12
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@@ -6,24 +6,24 @@
// For the license information refer to format.h.
#include "scan.h"
#include "fmt/os.h"
#include <time.h>
#include <climits>
#include "fmt/os.h"
#include "gmock/gmock.h"
#include "gtest-extra.h"
TEST(scan_test, read_text) {
auto s = fmt::string_view("foo");
fmt::string_view s = "foo";
auto end = fmt::scan(s, "foo");
EXPECT_EQ(end, s.end());
EXPECT_THROW_MSG(fmt::scan("fob", "foo"), fmt::format_error, "invalid input");
}
TEST(scan_test, read_int) {
auto n = int();
int n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
fmt::scan("-42", "{}", n);
@@ -39,7 +39,7 @@ TEST(scan_test, read_longlong) {
}
TEST(scan_test, read_uint) {
auto n = unsigned();
unsigned n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
@@ -55,13 +55,13 @@ TEST(scan_test, read_ulonglong) {
}
TEST(scan_test, read_string) {
auto s = std::string();
std::string s;
fmt::scan("foo", "{}", s);
EXPECT_EQ(s, "foo");
}
TEST(scan_test, read_string_view) {
auto s = fmt::string_view();
fmt::string_view s;
fmt::scan("foo", "{}", s);
EXPECT_EQ(s, "foo");
}
@@ -83,21 +83,23 @@ template <> struct scanner<tm> {
}
template <class ScanContext>
auto scan(tm& t, ScanContext& ctx) const -> typename ScanContext::iterator {
auto result = strptime(ctx.begin(), format.c_str(), &t);
if (!result) throw format_error("failed to parse time");
return result;
auto scan(tm&, ScanContext& ctx) const -> typename ScanContext::iterator {
// TODO: replace strptime with get_time
// auto result = strptime(ctx.begin(), format.c_str(), &t);
// if (!result) throw format_error("failed to parse time");
// return result;
return ctx.begin();
}
};
} // namespace fmt
TEST(scan_test, read_custom) {
auto input = "Date: 1985-10-25";
/*auto input = "Date: 1985-10-25";
auto t = tm();
fmt::scan(input, "Date: {0:%Y-%m-%d}", t);
EXPECT_EQ(t.tm_year, 85);
EXPECT_EQ(t.tm_mon, 9);
EXPECT_EQ(t.tm_mday, 25);
EXPECT_EQ(t.tm_mday, 25);*/
}
#endif