#ifndef KK_SHARED_H_
#define KK_SHARED_H_

#include <stdlib.h>
#include <stdbool.h>

#define FATAL(...) do { fprintf(stderr, "[at %s:%d @ %s] fatal: ", __FILE__, __LINE__, __func__); fprintf(stderr, __VA_ARGS__); fputc('\n', stderr); exit(1); } while(0);
#define UNREACHABLE(...) do { fprintf(stderr, "[at %s:%d @ %s] unreachable: ", __FILE__, __LINE__, __func__); fprintf(stderr, __VA_ARGS__); fputc('\n', stderr); exit(1); } while(0);

#define ENV_OPTS        "KKOPTS"
#define ENV_SHELL_LINES "KK_SHELL_LINES"

#define ENV_COLUMNS     "COLUMNS"
#define ENV_LINES       "LINES"
#define ENV_KK_COLUMNS  "KK_COLUMNS"
#define ENV_KK_LINES    "KK_LINES"

#define ENV_TMP_DIR     "KK_TMP_DIR"
#define ENV_HELP_FILE   "KK_HELP_FILE"

typedef struct {
  char *file;        // filename
  bool parse_ansi;   // 
  bool line_numbers; // display line numbers
  bool small_paging; //
  bool git_mode;     //
  bool force;        // read block devices etc
  enum relpos {      // ...
    BEFORE,          // ...
    AFTER            // ...
  } line_padding;    // which way to pad the line numbers
  char sep;          // line seperator 
  int tabsize;       //
} flags;

#define DEFAULTS(FLAG) do {    \
  FLAG->parse_ansi   = false;  \
  FLAG->line_numbers = false;  \
  FLAG->small_paging = false;  \
  FLAG->git_mode     = false;  \
  FLAG->force        = false;  \
  FLAG->line_padding = 0;      \
  FLAG->sep          = '\n';   \
  FLAG->tabsize      = 8;      \
} while(0);

#endif