84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
/*
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* process_esacpe_sequence.c
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*
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* Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <fs.h>
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#include <libbb.h>
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#include <shell.h>
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int process_escape_sequence(const char *source, char *dest, int destlen)
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{
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int i = 0;
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while (*source) {
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if (*source == '\\') {
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switch (*(source + 1)) {
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case 0:
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return 0;
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case '\\':
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dest[i++] = '\\';
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break;
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case 'a':
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dest[i++] = '\a';
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break;
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case 'b':
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dest[i++] = '\b';
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break;
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case 'n':
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dest[i++] = '\n';
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break;
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case 'r':
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dest[i++] = '\r';
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break;
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case 't':
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dest[i++] = '\t';
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break;
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case 'f':
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dest[i++] = '\f';
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break;
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case 'e':
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dest[i++] = 0x1b;
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break;
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case 'h':
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i += snprintf(dest + i, destlen - i, "%s", barebox_get_model());
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break;
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case 'w':
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i += snprintf(dest + i, destlen - i, "%s", getcwd());
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break;
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case '$':
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if (*(source + 2) == '?') {
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i += snprintf(dest + i, destlen - i, "%d", shell_get_last_return_code());
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source++;
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break;
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}
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default:
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dest[i++] = '\\';
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dest[i++] = *(source + 1);
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}
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source++;
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} else
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dest[i++] = *source;
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source++;
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if (!(destlen - i))
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break;
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}
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dest[i] = 0;
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return 0;
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}
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