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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/* Charset name normalization.
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Copyright (C) 2001-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <locale.h>
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#include <stdbool.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include "gconv_int.h"
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/* An iconv encoding is in the form of a triplet, with parts separated by
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a '/' character. The first part is the standard name, the second part is
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the character set, and the third part is the error handler. If the first
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part is sufficient to identify both the standard and the character set
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then the second part can be empty e.g. UTF-8//. If the first part is not
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sufficient to identify both the standard and the character set then the
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second part is required e.g. ISO-10646/UTF8/. If neither the first or
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second parts are provided e.g. //, then the current locale is used.
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The actual values used in the first and second parts are not entirely
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relevant to the implementation. The values themselves are used in a hash
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table to lookup modules and so the naming convention of the first two parts
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is somewhat arbitrary and only helps locate the entries in the cache.
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The third part is the error handler and is comprised of a ',' or '/'
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separated list of suffixes. Currently, we support "TRANSLIT" for
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transliteration and "IGNORE" for ignoring conversion errors due to
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unrecognized input characters. */
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#define GCONV_TRIPLE_SEPARATOR "/"
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#define GCONV_SUFFIX_SEPARATOR ","
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#define GCONV_TRANSLIT_SUFFIX "TRANSLIT"
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#define GCONV_IGNORE_ERRORS_SUFFIX "IGNORE"
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/* This function copies in-order, characters from the source 's' that are
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either alpha-numeric or one in one of these: "_-.,:/" - into the destination
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'wp' while dropping all other characters. In the process, it converts all
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alphabetical characters to upper case. It then appends up to two '/'
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characters so that the total number of '/'es in the destination is 2. */
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static inline void __attribute__ ((unused, always_inline))
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strip (char *wp, const char *s)
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{
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int slash_count = 0;
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while (*s != '\0')
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{
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if (__isalnum_l (*s, _nl_C_locobj_ptr)
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|| *s == '_' || *s == '-' || *s == '.' || *s == ',' || *s == ':')
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*wp++ = __toupper_l (*s, _nl_C_locobj_ptr);
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else if (*s == '/')
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{
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if (++slash_count == 3)
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break;
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*wp++ = '/';
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}
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++s;
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}
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while (slash_count++ < 2)
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*wp++ = '/';
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*wp = '\0';
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}
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static inline char * __attribute__ ((unused, always_inline))
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upstr (char *dst, const char *str)
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{
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char *cp = dst;
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while ((*cp++ = __toupper_l (*str++, _nl_C_locobj_ptr)) != '\0')
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/* nothing */;
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return dst;
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}
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