src/subshell.h

   1 /** \file subshell.h
   2  *  \brief Header: concurrent shell support
   3  */
   4
   5 #ifndef MC__SUBSHELL_H
   6 #define MC__SUBSHELL_H
   7
   8 /*** typedefs(not structures) and defined constants **********************************************/
   9
  10 /* Used to distinguish between a normal MC termination and */
  11 /* one caused by typing `exit' or `logout' in the subshell */
  12 #define SUBSHELL_EXIT 128
  13
  14 #ifdef HAVE_SUBSHELL_SUPPORT
  15
  16 /*** enums ***************************************************************************************/
  17
  18 /* State of the subshell; see subshell.c for an explanation */
  19
  20 enum subshell_state_enum
  21 {
  22     INACTIVE,
  23     ACTIVE,
  24     RUNNING_COMMAND
  25 };
  26
  27 /* For the `how' argument to various functions */
  28 enum
  29 {
  30     QUIETLY,
  31     VISIBLY
  32 };
  33
  34 /*** structures declarations (and typedefs of structures)*****************************************/
  35
  36 /*** global variables defined in .c file *********************************************************/
  37
  38 /* If using a subshell for evaluating commands this is true */
  39 extern int use_subshell;
  40
  41 /* File descriptor of the pseudoterminal used by the subshell */
  42 extern int subshell_pty;
  43
  44 extern enum subshell_state_enum subshell_state;
  45
  46 /* Holds the latest prompt captured from the subshell */
  47 extern char *subshell_prompt;
  48
  49 extern gboolean update_subshell_prompt;
  50
  51 /*** declarations of public functions ************************************************************/
  52
  53 void init_subshell (void);
  54 int invoke_subshell (const char *command, int how, char **new_dir);
  55 int read_subshell_prompt (void);
  56 void do_update_prompt (void);
  57 void resize_subshell (void);
  58 int exit_subshell (void);
  59 void do_subshell_chdir (const char *directory, gboolean update_prompt, gboolean reset_prompt);
  60 void subshell_get_console_attributes (void);
  61 void sigchld_handler (int sig);
  62
  63 #else /* not HAVE_SUBSHELL_SUPPORT */
  64 #define use_subshell 0
  65 #endif /* HAVE_SUBSHELL_SUPPORT */
  66
  67 /*** inline functions ****************************************************************************/
  68
  69 #endif /* MC__SUBSHELL_H */