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#include "string_stream.h"

#include <stdarg.h>

namespace foundation

{

namespace string_stream

{

Buffer & printf(Buffer &b, const char *format, ...)

{

va_list args;

va_start(args, format);

int n = vsnprintf(NULL, 0, format, args);

va_end(args);

uint32_t end = array::size(b);

array::resize(b, end + n + 1);

va_start(args, format);

vsnprintf(array::begin(b) + end, n + 1, format, args);

va_end(args);

array::resize(b, end + n);

return b;

}

Buffer & tab(Buffer &b, uint32_t column)

{

uint32_t current_column = 0;

uint32_t i = array::size(b) - 1;

while (i != 0xffffffffu && b[i] != '\n' && b[i] != '\r') {

++current_column;

--i;

}

if (current_column < column)

repeat(b, column - current_column, ' ');

return b;

}

Buffer & repeat(Buffer &b, uint32_t count, char c)

{

for (uint32_t i=0; i<count; ++i)

array::push_back(b, c);

return b;

}

}

}