818bf54632
This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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Copyright 2010 Lennart Poettering
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***/
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#include <inttypes.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <uchar.h>
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#include "string-util.h"
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#include "missing.h"
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/* What characters are special in the shell? */
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/* must be escaped outside and inside double-quotes */
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#define SHELL_NEED_ESCAPE "\"\\`$"
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/* Those that can be escaped or double-quoted.
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*
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* Stricly speaking, ! does not need to be escaped, except in interactive
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* mode, but let's be extra nice to the user and quote ! in case this
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* output is ever used in interactive mode. */
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#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;!"
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/* Note that we assume control characters would need to be escaped too in
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* addition to the "special" characters listed here, if they appear in the
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* string. Current users disallow control characters. Also '"' shall not
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* be escaped.
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*/
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#define SHELL_NEED_ESCAPE_POSIX "\\\'"
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typedef enum UnescapeFlags {
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UNESCAPE_RELAX = 1,
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} UnescapeFlags;
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typedef enum EscapeStyle {
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ESCAPE_BACKSLASH = 1,
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ESCAPE_POSIX = 2,
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} EscapeStyle;
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char *cescape(const char *s);
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char *cescape_length(const char *s, size_t n);
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int cescape_char(char c, char *buf);
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int cunescape(const char *s, UnescapeFlags flags, char **ret);
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int cunescape_length(const char *s, size_t length, UnescapeFlags flags, char **ret);
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int cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret);
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int cunescape_one(const char *p, size_t length, char32_t *ret, bool *eight_bit);
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char *xescape(const char *s, const char *bad);
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char *octescape(const char *s, size_t len);
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char *shell_escape(const char *s, const char *bad);
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char* shell_maybe_quote(const char *s, EscapeStyle style);
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