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/**** POSIX *******************************************************************/
#include <stdlib.h>
/******************************************************************************/
/**** LOCAL FUNCTIONS *********************************************************/
/******************************************************************************/
/******************************************************************************/
/**** EXPORTED FUNCTIONS ******************************************************/
/******************************************************************************/
int relabsd_util_parse_int
(
const char string [const restrict static 1],
const int min,
const int max,
int output [const restrict static 1]
)
{
char * invalid_char; /* may become an alias of string. */
long int buffer;
buffer = strtol(string, &invalid_char, 10);
if ((invalid_char[0] != '\0') || (string[0] == '\0'))
{
return -1;
}
if ((buffer < ((long int) min)) || (buffer > ((long int) max)))
{
return -2;
}
*output = ((int) buffer);
return 0;
}
/*
* Returns -1 on error,
* 0 on EOF,
* 1 on newline.
*/
int relabsd_util_reach_next_line_or_eof (FILE f [const restrict static 1])
{
char c;
c = (char) getc(f);
while ((c != '\n') && c != EOF)
{
c = (char) getc(f);
}
if (ferror(f))
{
/*
* The 'ferror' function's manual specifically states that it does not
* sets errno. There is no mention of errno in the 'getc' function's
* either, so I am assuming that errno cannot be used to indicate the
* error.
*/
return -1;
}
if (c == EOF)
{
return 0;
}
return 1;
}
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