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helper.h
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helper.h
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/*
helper.h
This file is part of JDate project.
JDate is a persian jalali calendar date tool for GNU command line.
JDate is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
JDate is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _HELPER_H
#define _HELPER_H
#define boolean unsigned short int
#define true 1
#define false 0
int _div (int a, int b)
{
return ((int)(a / b));
}
char *_inttostr (int a) {
char *str = malloc(sizeof(char)*20);
sprintf(str, "%d", a);
return str;
}
char *_strconcat (char *s1, const char *s2)
{
char *result = malloc(sizeof(s1) + sizeof(s2) + 1);
strcpy(result, s1);
strcat(s1, s2);
return s1;
}
char *_append (const char *s, char c) {
int len = strlen(s);
char buf[len+2];
strcpy(buf, s);
buf[len] = c;
buf[len + 1] = 0;
return strdup(buf);
}
char *_substring (char s[], int p, int l)
{
int c = 0;
char *sub = malloc(strlen(s) + 1);
while (c < l) {
sub[c++] = s[p + c - 1];
}
sub[c] = '\0';
return sub;
}
int file_exist (const char *filename) {
struct stat st;
int result = stat(filename, &st);
return result == 0;
}
#endif //_HELPER_H