text: #ifndef _SWAY_STRINGOP_H
  #define _SWAY_STRINGOP_H
  
  #include "list.h"
  
  // array of whitespace characters to use for delims
  extern const char whitespace[];
  
  char *strip_whitespace(char *str);
  char *strip_comments(char *str);
  void strip_quotes(char *str);
  
  // strcat that does nothing if dest or src is NULL
  char *lenient_strcat(char *dest, const char *src);
  char *lenient_strncat(char *dest, const char *src, size_t len);
  
  // strcmp that also handles null pointers.
  int lenient_strcmp(char *a, char *b);
  
  // Simply split a string with delims, free with `list_free_items_and_destroy`
  list_t *split_string(const char *str, const char *delims);
  
  // Splits an argument string, keeping quotes intact
  char **split_args(const char *str, int *argc);
  void free_argv(int argc, char **argv);
  
  char *code_strchr(const char *string, char delimiter);
  char *code_strstr(const char *haystack, const char *needle);
  int unescape_string(char *string);
  char *join_args(char **argv, int argc);
  char *join_list(list_t *list, char *separator);
  
  /**
   * Add quotes around any argv with whitespaces.
   */
  void add_quotes(char **argv, int argc);
  
  // split string into 2 by delim.
  char *cmdsep(char **stringp, const char *delim);
  // Split string into 2 by delim, handle quotes
  char *argsep(char **stringp, const char *delim);
  
  const char *strcasestr(const char *haystack, const char *needle);
  
  #endif
  