libgen_emu.cc

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#include "libgen_emu.h"
#ifdef PLATFORM_APERIOS
#include <sys/syslimits.h> // limits.h doesn't have PATH_MAX
#else
#include <limits.h>
#endif
#include <string.h>

static char staticStorage[PATH_MAX];

char* libgenEmu_basename(const char* path){
  char* buffer = staticStorage;
  if (path == '\0' || path[0] == '\0'){
    // NULL pointer or empty string
    strcpy(buffer, ".");
    return buffer;
  }else if (path[1] == '\0' && path[0] == '/'){
    // path is "/"
    strcpy(buffer, "/");
    return buffer;
  }else{
    strcpy(buffer, path);
    char* ptr = buffer + strlen(buffer);
    ptr--;
    // delete all trailing '/'
    while (ptr >= buffer && *ptr == '/'){
      *ptr = '\0';
      ptr--;
    }
    // scan backwards for '/'
    while (ptr >= buffer){
      if (*ptr == '/') return ++ptr;
      ptr--;
    }
    return buffer;
  }
}