0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <stdlib.h>
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#include "alloc-util.h"
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#include "bus-label.h"
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#include "hexdecoct.h"
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#include "macro.h"
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char *bus_label_escape(const char *s) {
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char *r, *t;
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const char *f;
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assert_return(s, NULL);
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/* Escapes all chars that D-Bus' object path cannot deal
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* with. Can be reversed with bus_path_unescape(). We special
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* case the empty string. */
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if (*s == 0)
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return strdup("_");
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r = new(char, strlen(s)*3 + 1);
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if (!r)
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return NULL;
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for (f = s, t = r; *f; f++) {
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/* Escape everything that is not a-zA-Z0-9. We also
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* escape 0-9 if it's the first character */
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if (!(*f >= 'A' && *f <= 'Z') &&
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!(*f >= 'a' && *f <= 'z') &&
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!(f > s && *f >= '0' && *f <= '9')) {
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*(t++) = '_';
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*(t++) = hexchar(*f >> 4);
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*(t++) = hexchar(*f);
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} else
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*(t++) = *f;
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}
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*t = 0;
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return r;
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}
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char *bus_label_unescape_n(const char *f, size_t l) {
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char *r, *t;
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size_t i;
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assert_return(f, NULL);
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/* Special case for the empty string */
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if (l == 1 && *f == '_')
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return strdup("");
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r = new(char, l + 1);
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if (!r)
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return NULL;
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for (i = 0, t = r; i < l; ++i) {
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if (f[i] == '_') {
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int a, b;
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if (l - i < 3 ||
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(a = unhexchar(f[i + 1])) < 0 ||
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(b = unhexchar(f[i + 2])) < 0) {
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/* Invalid escape code, let's take it literal then */
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*(t++) = '_';
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} else {
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*(t++) = (char) ((a << 4) | b);
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i += 2;
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}
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} else
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*(t++) = f[i];
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}
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*t = 0;
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return r;
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}
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