/*

  Copyright (C) 2004, 2005, 2008, 2014 Rocky Bernstein <rocky@gnu.org>

  Copyright (C) 1998 Monty <xiphmont@mit.edu>

*/

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <limits.h>

#define copystring(s) (s) ? s : NULL;

static inline char *

catstring(char *buff, const char *s)

{

  if(s){

    if(buff)

      buff=realloc(buff,strlen(buff)+strlen(s)+1);

    else

      buff=calloc(strlen(s)+1,1);

    strcat(buff,s);

  }

  return(buff);

}

/** Returns basename(fullname) and sets path to the dirname.

    rename includes a trailing slash execpt when dirname is empty.

*/

static inline char *

split_base_dir(char *fullpath, char *path, unsigned int max)

{

  char *post         = strrchr(fullpath, '/');

  int   pos          = (post ? post-fullpath+1 : 0);

  path[0]='\0';

  if (pos>max) return NULL;

  if (fullpath[pos] == '/') pos++;

  if (pos) strncat(path, fullpath, pos);

  return fullpath + pos;

}

/* By renaming this to utils.c and compiling like this:

   gcc -DSTANDALONE -o utils utils.h

you can demo this code.

*/

#ifdef STANDALONE

int main(int argc, char **argv)

{

  int i;

  const char *paths[] = {"/abc/def", "hij/klm"};

  char path[10];

  for (i=0; i<2; i++) {

      char *fullpath = strdup(paths[i]);

      char *base = split_base_dir(fullpath, path, sizeof(path));

      printf("dirname of %s is %s; basename is %s\n", fullpath, path, base);

      if (fullpath) free(fullpath);

  }

}

#endif