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#include "common.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
/***********************************************************************
* Return integer value from first line in file (formatted filename)
**********************************************************************/
int get_int_value_from_filef(const char* format, ...)
{
int value = 0;
va_list a;
va_start(a, format);
value = vget_int_value_from_filef(format, a);
va_end(a);
return value;
}
/***********************************************************************
* va_list wrapper function for get_int_value_from_filef()
**********************************************************************/
int vget_int_value_from_filef(const char* format, va_list args)
{
char filename[1024];
if (vsnprintf(filename, sizeof(filename), format, args) == sizeof(filename))
info("Error: filename buffer too small");
return get_int_value_from_file(filename);
}
/***********************************************************************
* Return integer value from first line in file
**********************************************************************/
int get_int_value_from_file(const char* filename)
{
FILE* fd = NULL;
char buffer[512];
int value = 0;
if (!(fd = fopen(filename, "r")))
return -1;
if (fgets(buffer, sizeof(buffer), fd))
value = get_int(buffer);
fclose(fd);
return value;
}
/***********************************************************************
* Truncates a string at the first '\r' or '\n'
**********************************************************************/
void chomp(char *string)
{
string[strcspn(string, "\r\n")] = '\0';
}
/***********************************************************************
* Fetches first number (ie the 35 of "35 123") from a
* string
**********************************************************************/
int get_int(const char* string)
{
return atoi(strpbrk(string, "0123456789"));
}
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