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Add support for field width and digit grouping in format

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This commit is contained in:
Maxime Coste 2022-08-13 18:53:27 +01:00
parent 0c1d4808fa
commit 021da117cf
3 changed files with 42 additions and 31 deletions
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40
src/commands.cc
View File

@ -1499,43 +1499,29 @@ const CommandDesc debug_cmd = {
auto total = 0;
write_to_debug_buffer("Memory usage:");
const ColumnCount column_size = 17;
write_to_debug_buffer(format("{} │{} │{} │{} ",
left_pad("domain", column_size),
left_pad("bytes", column_size),
left_pad("active allocs", column_size),
left_pad("total allocs", column_size)));
write_to_debug_buffer(format("{:17} │{:17} │{:17} │{:17} ",
"domain",
"bytes",
"active allocs",
"total allocs"));
write_to_debug_buffer(format("{0}┼{0}┼{0}┼{0}", String(Codepoint{0x2500}, column_size + 1)));
auto group = [](StringView s) {
String res;
auto pos = 0_byte, len = s.length();
if ((pos = len % 3) != 0)
res += s.substr(0, pos);
for (; pos != len; pos += 3)
{
if (not res.empty())
res += ",";
res += s.substr(pos, 3);
}
return res;
};
for (int domain = 0; domain < (int)MemoryDomain::Count; ++domain)
{
auto& stats = memory_stats[domain];
total += stats.allocated_bytes;
write_to_debug_buffer(format("{} │{} │{} │{} ",
left_pad(domain_name((MemoryDomain)domain), column_size),
left_pad(group(to_string(stats.allocated_bytes)), column_size),
left_pad(group(to_string(stats.allocation_count)), column_size),
left_pad(group(to_string(stats.total_allocation_count)), column_size)));
write_to_debug_buffer(format("{:17} │{:17} │{:17} │{:17} ",
domain_name((MemoryDomain)domain),
grouped(stats.allocated_bytes),
grouped(stats.allocation_count),
grouped(stats.total_allocation_count)));
}
write_to_debug_buffer({});
write_to_debug_buffer(format(" Total: {}", group(to_string(total))));
write_to_debug_buffer(format(" Total: {}", grouped(total)));
#if defined(__GLIBC__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 33))
write_to_debug_buffer(format(" Malloced: {}", group(to_string(mallinfo2().uordblks))));
write_to_debug_buffer(format(" Malloced: {}", grouped(mallinfo2().uordblks)));
#elif defined(__GLIBC__) || defined(__CYGWIN__)
write_to_debug_buffer(format(" Malloced: {}", group(to_string(mallinfo().uordblks))));
write_to_debug_buffer(format(" Malloced: {}", grouped(mallinfo().uordblks)));
#endif
}
else if (parser[0] == "shared-strings")

27
src/string_utils.cc
View File

@ -195,6 +195,20 @@ InplaceString<23> to_string(Hex val)
return to_string_impl<23>(val.val, 16);
}
InplaceString<23> to_string(Grouped val)
{
auto ungrouped = to_string_impl<23>(val.val);
InplaceString<23> res;
for (int pos = 0, len = ungrouped.m_length; pos != len; ++pos)
{
if (res.m_length and ((len - pos) % 3) == 0)
res.m_data[res.m_length++] = ',';
res.m_data[res.m_length++] = ungrouped.m_data[pos];
}
return res;
}
InplaceString<23> to_string(float val)
{
#if defined(__cpp_lib_to_chars)
@ -338,12 +352,19 @@ void format_impl(StringView fmt, ArrayView<const StringView> params, AppendFunc
if (closing == end)
throw runtime_error("format string error, unclosed '{'");
const int index = (closing == opening + 1) ?
implicitIndex : str_to_int({opening+1, closing});
auto format = std::find(opening+1, closing, ':');
const int index = opening+1 == format ? implicitIndex : str_to_int({opening+1, format});
if (index >= params.size())
throw runtime_error("format string parameter index too big");
if (format != closing)
{
for (ColumnCount width = str_to_int({format+1, closing}), len = params[index].column_length();
width > len; --width)
append(' ');
}
append(params[index]);
implicitIndex = index+1;
it = closing+1;
@ -454,7 +475,7 @@ UnitTest test_string{[]()
kak_assert(subsequence_match("tchou kanaky", "tchou kanaky"));
kak_assert(not subsequence_match("tchou kanaky", "tchou kanaky"));
kak_assert(format("Youhou {1} {} {0} \\{}", 10, "hehe", 5) == "Youhou hehe 5 10 {}");
kak_assert(format("Youhou {1} {} '{0:4}' \\{}", 10, "hehe", 5) == "Youhou hehe 5 ' 10' {}");
char buffer[20];
kak_assert(format_to(buffer, "Hey {}", 15) == "Hey 15");

6
src/string_utils.hh
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@ -117,19 +117,23 @@ struct InplaceString
constexpr operator StringView() const { return {m_data, ByteCount{m_length}}; }
operator String() const { return {m_data, ByteCount{m_length}}; }
unsigned char m_length;
unsigned char m_length{};
char m_data[N];
};
struct Hex { size_t val; };
constexpr Hex hex(size_t val) { return {val}; }
struct Grouped { size_t val; };
constexpr Grouped grouped(size_t val) { return {val}; }
InplaceString<15> to_string(int val);
InplaceString<15> to_string(unsigned val);
InplaceString<23> to_string(long int val);
InplaceString<23> to_string(unsigned long val);
InplaceString<23> to_string(long long int val);
InplaceString<23> to_string(Hex val);
InplaceString<23> to_string(Grouped val);
InplaceString<23> to_string(float val);
InplaceString<7> to_string(Codepoint c);