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- /***************************************
- * FIELD INPUT v1.35
- * © Copyright 1988 Timm Martin
- * All Rights Reserved
- ****************************************/
-
- #include <exec/io.h>
- #include <exec/types.h>
- #include <intuition/intuition.h>
- #include <console/console.h>
- #include <console/fields.h>
- #include <console/functions.h>
- #include <toolkit/toolkit.h>
-
- #define CURRENT_FIELD header->CurrentField,header->WriteReq
-
- UBYTE field__clip[FIELD_CLIP_SIZE];
-
- int field_input( header )
- struct FieldHeader *header;
- {
- ULONG actual; /* actual number of characters read from console */
- UBYTE hold; /* temporary character storage */
- REG int where; /* char in buffer being examined */
-
- if (!(actual = con_read( header->ReadReq, header->Buffer )))
- return (0);
-
- if (!header->CurrentField)
- return (FIELD_NO_CURRENT);
-
- /* check if entire input field is in the window */
- if (header->Window->Width <= header->CurrentField->Right ||
- header->Window->Height <= header->CurrentField->Bottom) {
- FLASH_SCREEN;
- return (FIELD_OFF);
- }
-
- where = 0;
- while (where < actual) {
-
- /* if read a printable character */
- if ((header->Buffer[where] >= 0x20 && header->Buffer[where] <= 0x7E) ||
- (header->Buffer[where] >= 0xA0 && header->Buffer[where] <= 0xFF)) {
- /* if field input is masked */
- if (header->CurrentField->Mask) {
- /* if acceptable input character */
- if ((header->CurrentField->Mask->Element[header->Buffer[where]>>5]) &
- (MASK_ENABLE << (header->Buffer[where] % 32)))
- field_char_type( CURRENT_FIELD, header->Buffer[where], header->TypeMode );
- else
- FLASH_SCREEN;
- }
- else
- field_char_type( CURRENT_FIELD, header->Buffer[where], header->TypeMode );
- }
-
- else if (header->Buffer[where] == BACKSPACE_CODE)
- field_char_backspace( CURRENT_FIELD );
-
- else if (header->Buffer[where] == RETURN_CODE)
- return (FIELD_RETURN);
-
- else if (header->Buffer[where] == DELETE_CODE)
- field_char_delete( CURRENT_FIELD );
-
- else if (header->Buffer[where] == TAB_CODE)
- field_tab_forward( CURRENT_FIELD );
-
- else if (header->Buffer[where] == ESCAPE_CODE)
- return (FIELD_ESCAPE);
-
- /* if control key pressed */
- else if ((hold = header->Buffer[where] | CONTROL_CODE) >= ' ' && hold <= '~') {
- switch (hold) {
- case 'x': field_delete( CURRENT_FIELD ); break;
- case 'r': field_restore( CURRENT_FIELD ); break;
- case 'd': field_dup( CURRENT_FIELD ); break;
- case 'f': field_delete_forward( CURRENT_FIELD ); break;
- case 'b': field_delete_backward( CURRENT_FIELD ); break;
- case 't': header->TypeMode = TYPEOVER_TYPE_MODE; break;
- case 'n': header->TypeMode = INSERT_TYPE_MODE; break;
- case 'k': field_cut( CURRENT_FIELD ); break;
- case 'o': field_copy( CURRENT_FIELD ); break;
- case 'p': field_paste( CURRENT_FIELD ); break;
- } /* switch control key */
- } /* else if control key */
-
- else if (header->Buffer[where] == CSI) {
-
- if (header->Buffer[++where] >= '0' && header->Buffer[where] <= '9') {
- /* function keys 1-10 */
- if (header->Buffer[where+1] == '~')
- return (CON_F + header->Buffer[where++] - '0' + 1);
- /* shifted F1-F10 */
- else if (header->Buffer[where+1] >= '0' &&
- header->Buffer[where+1] <= '9' &&
- header->Buffer[where+2] == '~') {
- return (CON_SHIFT_F + header->Buffer[where+1] - '0' + 1);
- where += 2;
- } /* else if shifted function key */
- } /* if receiving function key input */
-
- else {
- switch (header->Buffer[where]) {
- case 'A': return (FIELD_PREVIOUS); break;
- case 'B': return (FIELD_NEXT); break;
- case 'C': field_cursor_right( CURRENT_FIELD ); break;
- case 'D': field_cursor_left( CURRENT_FIELD ); break;
- case ' ': if (header->Buffer[++where] == '@')
- field_right( CURRENT_FIELD );
- else if (header->Buffer[where] == 'A')
- field_left( CURRENT_FIELD );
- break;
- case 'T': return (FIELD_FIRST); break;
- case 'S': return (FIELD_FINAL); break;
- case '?': if (header->Buffer[++where] == '~')
- return (FIELD_HELP);
- break;
- case 'Z': field_tab_backward( CURRENT_FIELD ); break;
- } /* switch */
- } /* else not function keys */
- } /* else buffer == <CSI> */
-
- where++;
- } /* while have not exhausted buffer */
-
- return (FIELD_SWALLOW);
- /* input swallowed into field; no response required from calling program */
- }
-