diff options
Diffstat (limited to 'libbb/process_escape_sequence.c')
| -rw-r--r-- | libbb/process_escape_sequence.c | 73 |
1 files changed, 35 insertions, 38 deletions
diff --git a/libbb/process_escape_sequence.c b/libbb/process_escape_sequence.c index ad2be94..67b0490 100644 --- a/libbb/process_escape_sequence.c +++ b/libbb/process_escape_sequence.c @@ -2,9 +2,8 @@ /* * Utility routines. * - * Copyright (C) tons of folks. Tracking down who wrote what - * isn't something I'm going to worry about... If you wrote something - * here, please feel free to acknowledge your work. + * Copyright (C) Manuel Nova III <mnovoa3@bellsouth.net> + * and Vladimir Oleynik <vodz@usa.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -20,9 +19,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * - * Based in part on code from sash, Copyright (c) 1999 by David I. Bell - * Permission has been granted to redistribute this code under the GPL. - * + * */ #include <stdio.h> @@ -31,45 +28,45 @@ -char process_escape_sequence(char **ptr) +char process_escape_sequence(const char **ptr) { - static const char charmap[] = { - 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', 0, - '\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' }; - - const char *p; - char *q; - int num_digits; - unsigned int n; + static const char charmap[] = { + 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', 0, + '\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' }; - n = 0; - q = *ptr; + const char *p; + const char *q; + int num_digits; + unsigned int n; + + n = 0; + q = *ptr; - for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) { - if ((*q < '0') || (*q > '7')) { /* not a digit? */ - break; - } - n = n * 8 + (*q++ - '0'); - } + for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) { + if ((*q < '0') || (*q > '7')) { /* not a digit? */ + break; + } + n = n * 8 + (*q++ - '0'); + } - if (num_digits == 0) { /* mnemonic escape sequence? */ - for (p=charmap ; *p ; p++) { - if (*p == *q) { - q++; - break; - } - } - n = *(p+(sizeof(charmap)/2)); - } + if (num_digits == 0) { /* mnemonic escape sequence? */ + for (p=charmap ; *p ; p++) { + if (*p == *q) { + q++; + break; + } + } + n = *(p+(sizeof(charmap)/2)); + } /* doesn't hurt to fall through to here from mnemonic case */ - if (n > UCHAR_MAX) { /* is octal code too big for a char? */ - n /= 8; /* adjust value and */ - --q; /* back up one char */ - } + if (n > UCHAR_MAX) { /* is octal code too big for a char? */ + n /= 8; /* adjust value and */ + --q; /* back up one char */ + } - *ptr = q; - return (char) n; + *ptr = q; + return (char) n; } |