mirror of https://github.com/vivier/EMILE.git
127 lines
2.0 KiB
C
127 lines
2.0 KiB
C
/*
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*
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* (c) 2005-2007 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#define __NO_INLINE__ /* to avoid inline putchar() */
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include <sys/types.h>
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#include "libui.h"
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#define LEFT_ARROW() if (pos > 0) \
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{ \
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putchar('\b'); \
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pos--; \
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}
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#define RIGHT_ARROW() if (pos < l) \
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{ \
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putchar(buf[pos]);\
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pos++; \
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}
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#define DELETE() if (pos < l) \
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{ \
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strcpy(buf + pos, buf + pos + 1);\
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l--; \
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console_cursor_save(); \
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printf("%s", buf + pos); \
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putchar(' '); \
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console_cursor_restore(); \
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}
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void emile_edit(char *line, int length)
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{
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int l = strlen(line);
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int pos = l;
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int c;
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int i;
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int saved_wait = wait_char;
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char *buf;
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buf = malloc(length);
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memcpy(buf, line, length);
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console_cursor_off();
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printf("%s", buf);
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console_cursor_on();
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wait_char = 1;
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while (1)
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{
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console_keypressed(0);
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c = console_getchar();
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if (c == '\r')
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{
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strcpy(line, buf);
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break;
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}
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retry:
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if ( (c > 0x1f) && (c < 0x7f) && (l < length - 1) )
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{
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for (i = l; i > pos; i--)
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buf[i] = buf[i - 1];
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buf[pos] = c;
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putchar(c);
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pos++;
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l++;
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console_cursor_save();
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printf("%s", buf + pos);
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console_cursor_restore();
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}
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else switch(c)
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{
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case '':
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c = console_getchar();
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if ( c != '[' )
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goto exit;
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c = console_getchar();
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switch(c)
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{
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case 'D':
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LEFT_ARROW();
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break;
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case 'C':
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RIGHT_ARROW();
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break;
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case '3':
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if (console_getchar() == '~')
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DELETE();
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break;
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default:
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goto retry;
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}
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break;
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case '':
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LEFT_ARROW();
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break;
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case '':
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RIGHT_ARROW();
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break;
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case '\b': /* backspace */
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if (pos > 0)
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{
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putchar('\b');
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pos--;
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l--;
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strcpy(buf + pos, buf + pos + 1);
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console_cursor_save();
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printf("%s", buf + pos);
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putchar(' ');
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console_cursor_restore();
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}
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break;
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case 0x7f: /* Delete */
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DELETE();
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break;
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}
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}
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exit:
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wait_char = saved_wait;
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free(buf);
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}
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