source: keypress.c @ 249bbbe

#include <ctype.h>
#include <string.h>
#include "owl.h"

static const struct _owl_keypress_specialmap {
  int   kj;
  const char *ks;
} specialmap[] = {
#ifdef KEY_CODE_YES
   { KEY_CODE_YES,      "CODE_YES" }, 
#endif
   { KEY_MIN,           "MIN" }, 
   { KEY_BREAK,         "BREAK" }, 
   { KEY_DOWN,          "DOWN" }, 
   { KEY_UP,            "UP" }, 
   { KEY_LEFT,          "LEFT" }, 
   { KEY_RIGHT,         "RIGHT" }, 
   { KEY_HOME,          "HOME" }, 
   { KEY_BACKSPACE,     "BACKSPACE" }, 
   { KEY_F0,            "F0" }, 
   { KEY_F(1),          "F1" }, 
   { KEY_F(2),          "F2" }, 
   { KEY_F(3),          "F3" }, 
   { KEY_F(4),          "F4" }, 
   { KEY_F(5),          "F5" }, 
   { KEY_F(6),          "F6" }, 
   { KEY_F(7),          "F7" }, 
   { KEY_F(8),          "F8" }, 
   { KEY_F(9),          "F9" }, 
   { KEY_F(10),         "F10" }, 
   { KEY_F(11),         "F11" }, 
   { KEY_F(12),         "F12" }, 
   { KEY_DL,            "DL" }, 
   { KEY_IL,            "IL" }, 
   { KEY_DC,            "DC" }, 
   { KEY_IC,            "IC" }, 
   { KEY_EIC,           "EIC" }, 
   { KEY_CLEAR,         "CLEAR" }, 
   { KEY_EOS,           "EOS" }, 
   { KEY_EOL,           "EOL" }, 
   { KEY_SF,            "SF" }, 
   { KEY_SR,            "SR" }, 
   { KEY_NPAGE,         "NPAGE" }, 
   { KEY_PPAGE,         "PPAGE" }, 
   { KEY_STAB,          "STAB" }, 
   { KEY_CTAB,          "CTAB" }, 
   { KEY_CATAB,         "CATAB" }, 
   { KEY_ENTER,         "ENTER" }, 
   { KEY_SRESET,        "SRESET" }, 
   { KEY_RESET,         "RESET" }, 
   { KEY_PRINT,         "PRINT" }, 
   { KEY_LL,            "LL" }, 
   { KEY_A1,            "A1" }, 
   { KEY_A3,            "A3" }, 
   { KEY_B2,            "B2" }, 
   { KEY_C1,            "C1" }, 
   { KEY_C3,            "C3" }, 
   { KEY_BTAB,          "BTAB" }, 
   { KEY_BEG,           "BEG" }, 
   { KEY_CANCEL,        "CANCEL" }, 
   { KEY_CLOSE,         "CLOSE" }, 
   { KEY_COMMAND,       "COMMAND" }, 
   { KEY_COPY,          "COPY" }, 
   { KEY_CREATE,        "CREATE" }, 
   { KEY_END,           "END" }, 
   { KEY_EXIT,          "EXIT" }, 
   { KEY_FIND,          "FIND" }, 
   { KEY_HELP,          "HELP" }, 
   { KEY_MARK,          "MARK" }, 
   { KEY_MESSAGE,       "MESSAGE" }, 
   { KEY_MOVE,          "MOVE" }, 
   { KEY_NEXT,          "NEXT" }, 
   { KEY_OPEN,          "OPEN" }, 
   { KEY_OPTIONS,       "OPTIONS" }, 
   { KEY_PREVIOUS,      "PREVIOUS" }, 
   { KEY_REDO,          "REDO" }, 
   { KEY_REFERENCE,     "REFERENCE" }, 
   { KEY_REFRESH,       "REFRESH" }, 
   { KEY_REPLACE,       "REPLACE" }, 
   { KEY_RESTART,       "RESTART" }, 
   { KEY_RESUME,        "RESUME" }, 
   { KEY_SAVE,          "SAVE" }, 
   { KEY_SBEG,          "SBEG" }, 
   { KEY_SCANCEL,       "SCANCEL" }, 
   { KEY_SCOMMAND,      "SCOMMAND" }, 
   { KEY_SCOPY,         "SCOPY" }, 
   { KEY_SCREATE,       "SCREATE" }, 
   { KEY_SDC,           "SDC" }, 
   { KEY_SDL,           "SDL" }, 
   { KEY_SELECT,        "SELECT" }, 
   { KEY_SEND,          "SEND" }, 
   { KEY_SEOL,          "SEOL" }, 
   { KEY_SEXIT,         "SEXIT" }, 
   { KEY_SFIND,         "SFIND" }, 
   { KEY_SHELP,         "SHELP" }, 
   { KEY_SHOME,         "SHOME" }, 
   { KEY_SIC,           "SIC" }, 
   { KEY_SLEFT,         "SLEFT" }, 
   { KEY_SMESSAGE,      "SMESSAGE" }, 
   { KEY_SMOVE,         "SMOVE" }, 
   { KEY_SNEXT,         "SNEXT" }, 
   { KEY_SOPTIONS,      "SOPTIONS" }, 
   { KEY_SPREVIOUS,     "SPREVIOUS" }, 
   { KEY_SPRINT,        "SPRINT" }, 
   { KEY_SREDO,         "SREDO" }, 
   { KEY_SREPLACE,      "SREPLACE" }, 
   { KEY_SRIGHT,        "SRIGHT" }, 
   { KEY_SRSUME,        "SRSUME" }, 
   { KEY_SSAVE,         "SSAVE" }, 
   { KEY_SSUSPEND,      "SSUSPEND" }, 
   { KEY_SUNDO,         "SUNDO" }, 
   { KEY_SUSPEND,       "SUSPEND" }, 
   { KEY_UNDO,          "UNDO" }, 
   { KEY_MOUSE,         "MOUSE" }, 
#ifdef KEY_RESIZE
   { KEY_RESIZE,        "RESIZE" }, 
#endif
   { KEY_MAX,           "MAX" }, 
   { ' ',               "SPACE" }, 
   { 27,                "ESCAPE" }, 
   { 127,               "DELETE" }, 
   { '\r',              "CR" }, 
   { '\n',              "LF" },
   { '\t',              "TAB" }, 
   { 0,                 NULL }
};

#define OWL_CTRL(key) ((key)&037)
/* OWL_META is definied in owl.h */

char *owl_keypress_tostring(int j, int esc)
{
  GString *kb;
  const struct _owl_keypress_specialmap *sm;

  kb = g_string_new("");
  for (sm = specialmap; sm->kj!=0; sm++) {
    if (j == OWL_META(sm->kj) || (esc && j == sm->kj)) {
      g_string_append(kb, "M-");
      g_string_append(kb, sm->ks);
      break;
    } else if (j == sm->kj) {
      g_string_append(kb, sm->ks);
      break;
    }
  }
  if (!kb->str[0]) {
    if (j & OWL_META(0)) {
      g_string_append(kb, "M-");
      j &= ~OWL_META(0);
    }
    if ((OWL_CTRL(j) == j)) {
      g_string_append(kb, "C-");
      j |= 0x40;
      if (isupper(j)) j = tolower(j);

    }
    if (isascii(j)) {
      g_string_append_c(kb, j);
    }
    
  }  
  if (!kb->str[0]) {
    /* not a valid key */
    g_string_free(kb, true);
    return NULL;
  }
  return g_string_free(kb, false);
}


/* returns ERR on failure, else a keycode */
int owl_keypress_fromstring(const char *kb)
{
  const struct _owl_keypress_specialmap *sm;
  int ismeta=0, isctrl=0;
  int j = ERR;

  while (*kb && kb[1] == '-' && (kb[0] == 'C' || kb[0] == 'M')) {
    if ((kb[0] == 'C') && (kb[1] == '-')) {
      isctrl = 1;
      kb+=2;
    }
    if ((kb[0] == 'M') && (kb[1] == '-')) {
      ismeta = 1;
      kb+=2;
    }
  }
  if (isascii(kb[0]) && !kb[1]) {
    j = kb[0];
  } else {
    for (sm = specialmap; sm->kj!=0; sm++) {
      if (!strcmp(sm->ks, kb)) {
        j = sm->kj;
      }
    }
  }
  if (j==ERR) return(ERR);
  if (isctrl) {
    j = OWL_CTRL(j);
  }
  if (ismeta) {
    j = OWL_META(j);
  }
  return(j);
}