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// This file is part of The New Aspell
// Copyright (C) 2001 by Kevin Atkinson under the GNU LGPL license
// version 2.0 or 2.1. You should have received a copy of the LGPL
// license along with this library if you did not you can find
// it at http://www.gnu.org/.
#include <stdarg.h>
#include <stdio.h>
#ifndef va_copy
# ifdef __va_copy
# define va_copy __va_copy
# else
# define va_copy(dst, src) memcpy(&dst, &src, sizeof(va_list))
# endif
#endif
#include "string.hpp"
#include "asc_ctype.hpp"
namespace acommon {
// reserve space for at least s+1 characters
void String::reserve_i(size_t s)
{
size_t old_size = end_ - begin_;
size_t new_size = (storage_end_ - begin_) * 3 / 2;
if (new_size < 64) new_size = 64;
if (new_size < s + 1) new_size = s + 1;
if (old_size == 0) {
if (begin_) free(begin_);
begin_ = (char *)malloc(new_size);
} else {
begin_ = (char *)realloc(begin_, new_size);
}
end_ = begin_ + old_size;
storage_end_ = begin_ + new_size;
}
int String::vprintf(const char * format, va_list ap0)
{
reserve(size() + 64);
int res = 0;
va_list ap;
loop: {
int avail = storage_end_ - end_;
if (res < 0 && avail > 1024*1024)
return -1; // to avoid an infinite loop in case a neg result
// really means an error and not just "not enough
// space"
va_copy(ap,ap0);
res = vsnprintf(end_, avail, format, ap);
va_end(ap);
if (res < 0) {
reserve_i(); goto loop;
} else if (res > avail) {
reserve_i(size() + res); goto loop;
}
}
end_ += res;
return res;
}
bool StringIStream::append_line(String & str, char d)
{
if (in_str[0] == '\0') return false;
const char * end = in_str;
while (*end != d && *end != '\0') ++end;
str.append(in_str, end - in_str);
in_str = end;
if (*in_str == d) ++in_str;
return true;
}
bool StringIStream::read(void * data, unsigned int size)
{
char * str = static_cast<char *>(data);
while (*in_str != '\0' && size != 0) {
*str = *in_str;
++in_str;
++str;
++size;
}
return size == 0;
}
}
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