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different.c

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

#include "different.h"
#include "gripes.h"
#include "man-config.h"
#include "util.h"

static struct filelist {
    char *pathname;
    struct filelist *next;
} cat_list, man_list;

static int
is_different(const char *file, struct filelist *p) {
    char *command;
    const char *cmp = getval("CMP");
    int ret;

    if (cmp) {
      while (p->next) {
          command = my_xsprintf("%s %S %S\n", cmp, file, p->pathname);
          ret = do_system_command (command, 1);
          if (ret == 0) {
            gripe(IDENTICAL, file, p->pathname);
            return 0;
          }
          p = p->next;
      }
      p->next = (struct filelist *) my_malloc(sizeof(struct filelist));
      p->pathname = my_strdup(file);
      p->next->next = 0;
    }
    return 1;
}

int
different_cat_file (const char *file) {
    return is_different (file, &cat_list);
}

int
different_man_file (const char *file) {
    return is_different (file, &man_list);
}

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