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Add custom format

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This commit is contained in:
Alex Kotov 2022-01-20 01:47:03 +05:00
parent b896eda932
commit 2e58e67f68
1 changed files with 16 additions and 0 deletions
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16
src/printf.c
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@ -77,6 +77,7 @@
#define FLAGS_LONG_LONG (1u << 9u)
#define FLAGS_PRECISION (1u << 10u)
#define FLAGS_ADAPT_EXP (1u << 11u)
#define FLAGS_CUSTOM (1u << 12u)
// output function type
typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen);
@ -259,6 +260,14 @@ int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char*
flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
case 'S':
if (*(++format) == 'U') {
flags |= FLAGS_CUSTOM;
format++;
} else {
format--;
}
break;
default:
break;
}
@ -406,6 +415,13 @@ int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char*
break;
}
case 'S':
if (flags & FLAGS_CUSTOM) {
// TODO: implement this
}
format++;
break;
case 'p':
{
width = sizeof(void*) * 2u;