env.c File Reference

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

Include dependency graph for env.c:

Go to the source code of this file.

Functions
int	main (void)

Variables
char **	environ

Function Documentation

int main

(

void

)

Definition at line 40 of file env.c.

References c, and environ.

{
        char** s = environ;
        int c = 0;

        if (s == NULL || *s == NULL) {
                printf("environment is empty!\n");
                return EXIT_SUCCESS;
        }
        
        do {
                long int i = 0;
                double d = 0.;
                char* p = NULL;
                char* v = NULL;
                char* n = NULL;

                if (strncmp(*s, "MBDYN", 5) != 0) {
                        continue;
                }

                c++;
         
                printf("%s\n", *s);

                p = strdup(*s);
                if (p == NULL) {
                        fprintf(stderr, "error 1\n");
                        exit(EXIT_FAILURE);
                }
                v = strchr(p, '=');
                if (v == NULL) {
                        fprintf(stderr, "error 2\n");
                        exit(EXIT_FAILURE);
                }

                *v = '\0';
                v++;
         
                if (strncmp(p+5, "_real_", 6) == 0) {
                        n = p+11;
                        d = atof(v);
                        printf("env=%s, var=%s, val=%s(%e, real)\n", 
                                *s, n, v, d);
                } else if (strncmp(p+5, "_integer_", 9) == 0) {
                        n = p+14;
                        i = atoi(v);
                        printf("env=%s, var=%s, val=%s(%ld, integer)\n", 
                                *s, n, v, i);
                } else {
                        fprintf(stderr, "error 3\n");
                        exit(EXIT_FAILURE);
                }       
        } while (*++s);

        printf("%d entries\n", c);
        
        return EXIT_SUCCESS;
}

Variable Documentation

char** environ

Referenced by main().