contrib/gdb/gdb/tui/tuiCommand.c

   1 /*
   2 ** tuiCommand.c
   3 **     This module contains functions specific to command window processing.
   4 */
   5
   6
   7 #include "defs.h"
   8 #include "tui.h"
   9 #include "tuiData.h"
  10 #include "tuiWin.h"
  11 #include "tuiIO.h"
  12
  13
  14 /*****************************************
  15 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  16 ******************************************/
  17
  18
  19
  20 /*****************************************
  21 ** PUBLIC FUNCTIONS                        **
  22 ******************************************/
  23
  24 /*
  25 ** tuiDispatchCtrlChar().
  26 **        Dispatch the correct tui function based upon the control character.
  27 */
  28 unsigned int
  29 #ifdef __STDC__
  30 tuiDispatchCtrlChar (
  31                       unsigned int ch)
  32 #else
  33 tuiDispatchCtrlChar (ch)
  34      unsigned int ch;
  35 #endif
  36 {
  37   TuiWinInfoPtr winInfo = tuiWinWithFocus ();
  38
  39   /*
  40     ** If the command window has the logical focus, or no-one does
  41     ** assume it is the command window; in this case, pass the
  42     ** character on through and do nothing here.
  43     */
  44   if (winInfo == (TuiWinInfoPtr) NULL || winInfo == cmdWin)
  45     return ch;
  46   else
  47     {
  48       unsigned int c = 0, chCopy = ch;
  49       register int i;
  50       char *term;
  51
  52       /* If this is an xterm, page next/prev keys aren't returned
  53         ** by keypad as a single char, so we must handle them here.
  54         ** Seems like a bug in the curses library?
  55         */
  56       term = (char *) getenv ("TERM");
  57       for (i = 0; (term && term[i]); i++)
  58         term[i] = toupper (term[i]);
  59       if ((strcmp (term, "XTERM") == 0) && m_isStartSequence (ch))
  60         {
  61           unsigned int pageCh = 0, tmpChar;
  62
  63           tmpChar = 0;
  64           while (!m_isEndSequence (tmpChar))
  65             {
  66               tmpChar = (int) wgetch (cmdWin->generic.handle);
  67               if (!tmpChar)
  68                 break;
  69               if (tmpChar == 53)
  70                 pageCh = KEY_PPAGE;
  71               else if (tmpChar == 54)
  72                 pageCh = KEY_NPAGE;
  73             }
  74           chCopy = pageCh;
  75         }
  76
  77       switch (chCopy)
  78         {
  79         case KEY_NPAGE:
  80           tuiScrollForward (winInfo, 0);
  81           break;
  82         case KEY_PPAGE:
  83           tuiScrollBackward (winInfo, 0);
  84           break;
  85         case KEY_DOWN:
  86         case KEY_SF:
  87           tuiScrollForward (winInfo, 1);
  88           break;
  89         case KEY_UP:
  90         case KEY_SR:
  91           tuiScrollBackward (winInfo, 1);
  92           break;
  93         case KEY_RIGHT:
  94           tuiScrollLeft (winInfo, 1);
  95           break;
  96         case KEY_LEFT:
  97           tuiScrollRight (winInfo, 1);
  98           break;
  99         case '\f':
 100           tuiRefreshAll ();
 101           break;
 102         default:
 103           c = chCopy;
 104           break;
 105         }
 106       return c;
 107     }
 108 }                               /* tuiDispatchCtrlChar */
 109
 110
 111 /*
 112 ** tuiIncrCommandCharCountBy()
 113 **     Increment the current character count in the command window,
 114 **     checking for overflow.  Returns the new value of the char count.
 115 */
 116 int
 117 #ifdef __STDC__
 118 tuiIncrCommandCharCountBy (
 119                             int count)
 120 #else
 121 tuiIncrCommandCharCountBy (count)
 122      int count;
 123 #endif
 124 {
 125   if (tui_version)
 126     {
 127       if ((count + cmdWin->detail.commandInfo.curch) >= cmdWin->generic.width)
 128         cmdWin->detail.commandInfo.curch =
 129           (count + cmdWin->detail.commandInfo.curch) - cmdWin->generic.width;
 130       else
 131         cmdWin->detail.commandInfo.curch += count;
 132     }
 133
 134   return cmdWin->detail.commandInfo.curch;
 135 }                               /* tuiIncrCommandCharCountBy */
 136
 137
 138 /*
 139 ** tuiDecrCommandCharCountBy()
 140 **     Decrement the current character count in the command window,
 141 **     checking for overflow.  Returns the new value of the char count.
 142 */
 143 int
 144 #ifdef __STDC__
 145 tuiDecrCommandCharCountBy (
 146                             int count)
 147 #else
 148 tuiDecrCommandCharCountBy (count)
 149      int count;
 150 #endif
 151 {
 152   if (tui_version)
 153     {
 154       if ((cmdWin->detail.commandInfo.curch - count) < 0)
 155         cmdWin->detail.commandInfo.curch =
 156           cmdWin->generic.width + (cmdWin->detail.commandInfo.curch - count);
 157       else
 158         cmdWin->detail.commandInfo.curch -= count;
 159     }
 160
 161   return cmdWin->detail.commandInfo.curch;
 162 }                               /* tuiDecrCommandCharCountBy */
 163
 164
 165 /*
 166 ** tuiSetCommandCharCountTo()
 167 **     Set the character count to count.
 168 */
 169 int
 170 #ifdef __STDC__
 171 tuiSetCommandCharCountTo (
 172                            int count)
 173 #else
 174 tuiSetCommandCharCountTo (count)
 175      int count;
 176 #endif
 177 {
 178   if (tui_version)
 179     {
 180       if (count > cmdWin->generic.width - 1)
 181         {
 182           cmdWin->detail.commandInfo.curch = 0;
 183           tuiIncrCommandCharCountBy (count);
 184         }
 185       else
 186         cmdWin->detail.commandInfo.curch -= count;
 187     }
 188
 189   return cmdWin->detail.commandInfo.curch;
 190 }                               /* tuiSetCommandCharCountTo */
 191
 192
 193
 194 /*
 195 ** tuiClearCommandCharCount()
 196 **     Clear the character count to count.
 197 */
 198 int
 199 #ifdef __STDC__
 200 tuiClearCommandCharCount (void)
 201 #else
 202 tuiClearCommandCharCount ()
 203 #endif
 204 {
 205   if (tui_version)
 206     cmdWin->detail.commandInfo.curch = 0;
 207
 208   return cmdWin->detail.commandInfo.curch;
 209 }                               /* tuiClearCommandCharCount */
 210
 211
 212
 213 /*****************************************
 214 ** STATIC LOCAL FUNCTIONS                 **
 215 ******************************************/