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check formatting character and store it

master
Daniel Kolesa 2015-07-02 20:58:04 +01:00
parent c5c510d168
commit c6db1a8b47
1 changed files with 33 additions and 2 deletions
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35
octa/format.hh
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@ -49,6 +49,34 @@ namespace detail {
}
}
namespace detail {
static constexpr const bool fmt_specs[] = {
/* uppercase spec set */
1, 0, 0, 0, /* A B C D */
1, 1, 1, 0, /* E F G H */
0, 0, 0, 0, /* I J K L */
0, 0, 0, 0, /* M N O P */
0, 0, 0, 0, /* Q R S T */
0, 0, 0, 1, /* U V W X */
0, 0, /* Y Z */
/* ascii filler */
0, 0, 0, 0, 0, 0,
/* lowercase spec set */
1, 1, 1, 1, /* a b c d */
1, 1, 1, 0, /* e f g h */
0, 0, 0, 0, /* i j k l */
0, 0, 1, 0, /* m n o p */
0, 0, 1, 0, /* q r s t */
0, 0, 0, 1, /* u v w x */
0, 0, /* y z */
/* ascii filler */
0, 0, 0, 0, 0
};
}
struct FormatSpec {
FormatSpec(): p_fmt(nullptr) {}
FormatSpec(const char *fmt): p_fmt(fmt) {}
@ -99,6 +127,7 @@ struct FormatSpec {
}
private:
bool read_spec() {
octa::Size ndig = octa::detail::read_digits(p_fmt, p_buf);
@ -161,8 +190,10 @@ private:
fmtchar:
spec = *p_fmt++;
if (spec != 's') return false;
return true;
/* make sure we're testing on a signed byte - our mapping only
* tests values up to 127 */
octa::sbyte sp = spec;
return (sp >= 65) && octa::detail::fmt_specs[sp - 65];
}
const char *p_fmt;