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use c style formatting for strings (but type-generic, i.e. %s prints any value)

master
Daniel Kolesa 2015-07-01 23:11:32 +01:00
parent e6e1020702
commit 598fcbfa25
1 changed files with 7 additions and 4 deletions
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11
octa/format.hh
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@ -120,21 +120,24 @@ static inline octa::Size formatted_write(R writer, octa::Size &fmtn,
const char *fmt, const A &...args) {
octa::Size argidx = 0, written = 0, retn = 0;
while (*fmt) {
if (*fmt == '{') {
if (*fmt == '%') {
++fmt;
if (*fmt == '%') goto plain;
octa::Size needidx = argidx;
if (*++fmt != '}') {
if (*fmt != 's') {
char idx[8] = { '\0' };
for (octa::Size i = 0; isdigit(*fmt); ++i)
idx[i] = *fmt++;
assert((*fmt == '}') && "malformed format string");
assert((*fmt++ == '$') && "malformed format string");
needidx = atoi(idx);
} else ++argidx;
++fmt;
assert((*fmt++ == 's') && "malformed format string");
retn = octa::max(needidx, retn);
written += octa::detail::write_idx(writer, needidx,
args...);
continue;
}
plain:
writer.put(*fmt++);
++written;
}