11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2013 Kay Sievers
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***/
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/*
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* Concatenates/copies strings. In any case, terminates in all cases
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* with '\0' and moves the @dest pointer forward to the added '\0'.
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* Returns the remaining size, and 0 if the string was truncated.
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*
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* Due to the intended usage, these helpers silently noop invocations
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* having zero size. This is technically an exception to the above
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* statement "terminates in all cases". It's unexpected for such calls to
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* occur outside of a loop where this is the preferred behavior.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "strxcpyx.h"
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size_t strpcpy(char **dest, size_t size, const char *src) {
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size_t len;
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assert(dest);
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assert(src);
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if (size == 0)
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return 0;
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len = strlen(src);
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if (len >= size) {
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if (size > 1)
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*dest = mempcpy(*dest, src, size-1);
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size = 0;
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} else {
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if (len > 0) {
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*dest = mempcpy(*dest, src, len);
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size -= len;
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}
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}
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*dest[0] = '\0';
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return size;
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}
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size_t strpcpyf(char **dest, size_t size, const char *src, ...) {
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va_list va;
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int i;
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assert(dest);
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assert(src);
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if (size == 0)
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return 0;
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va_start(va, src);
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i = vsnprintf(*dest, size, src, va);
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if (i < (int)size) {
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*dest += i;
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size -= i;
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} else {
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size = 0;
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}
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va_end(va);
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return size;
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}
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size_t strpcpyl(char **dest, size_t size, const char *src, ...) {
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va_list va;
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assert(dest);
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assert(src);
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va_start(va, src);
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do {
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size = strpcpy(dest, size, src);
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src = va_arg(va, char *);
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} while (src != NULL);
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va_end(va);
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return size;
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}
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size_t strscpy(char *dest, size_t size, const char *src) {
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char *s;
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assert(dest);
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assert(src);
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s = dest;
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return strpcpy(&s, size, src);
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}
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size_t strscpyl(char *dest, size_t size, const char *src, ...) {
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va_list va;
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char *s;
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assert(dest);
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assert(src);
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va_start(va, src);
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s = dest;
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do {
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size = strpcpy(&s, size, src);
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src = va_arg(va, char *);
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} while (src != NULL);
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va_end(va);
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return size;
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}
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