1 files changed, 121 insertions, 0 deletions
diff --git a/src/fundamental/string-util-fundamental.h b/src/fundamental/string-util-fundamental.h
new file mode 100644
index 0000000..b537b2e
--- /dev/null
+++ b/src/fundamental/string-util-fundamental.h
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#if SD_BOOT
+#  include "efi.h"
+#  include "efi-string.h"
+#else
+#  include <string.h>
+#endif
+
+#include "macro-fundamental.h"
+
+#if SD_BOOT
+#  define strlen strlen16
+#  define strcmp strcmp16
+#  define strncmp strncmp16
+#  define strcasecmp strcasecmp16
+#  define strncasecmp strncasecmp16
+#  define STR_C(str)       (L ## str)
+typedef char16_t sd_char;
+#else
+#  define STR_C(str)       (str)
+typedef char sd_char;
+#endif
+
+#define streq(a,b) (strcmp((a),(b)) == 0)
+#define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)
+#define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
+#define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
+
+static inline int strcmp_ptr(const sd_char *a, const sd_char *b) {
+        if (a && b)
+                return strcmp(a, b);
+
+        return CMP(a, b);
+}
+
+static inline int strcasecmp_ptr(const sd_char *a, const sd_char *b) {
+        if (a && b)
+                return strcasecmp(a, b);
+
+        return CMP(a, b);
+}
+
+static inline bool streq_ptr(const sd_char *a, const sd_char *b) {
+        return strcmp_ptr(a, b) == 0;
+}
+
+static inline bool strcaseeq_ptr(const sd_char *a, const sd_char *b) {
+        return strcasecmp_ptr(a, b) == 0;
+}
+
+static inline size_t strlen_ptr(const sd_char *s) {
+        if (!s)
+                return 0;
+
+        return strlen(s);
+}
+
+sd_char *startswith(const sd_char *s, const sd_char *prefix) _pure_;
+sd_char *startswith_no_case(const sd_char *s, const sd_char *prefix) _pure_;
+sd_char *endswith(const sd_char *s, const sd_char *postfix) _pure_;
+sd_char *endswith_no_case(const sd_char *s, const sd_char *postfix) _pure_;
+
+static inline bool isempty(const sd_char *a) {
+        return !a || a[0] == '\0';
+}
+
+static inline const sd_char *strempty(const sd_char *s) {
+        return s ?: STR_C("");
+}
+
+static inline const sd_char *yes_no(bool b) {
+        return b ? STR_C("yes") : STR_C("no");
+}
+
+static inline const sd_char *on_off(bool b) {
+        return b ? STR_C("on") : STR_C("off");
+}
+
+static inline const sd_char* comparison_operator(int result) {
+        return result < 0 ? STR_C("<") : result > 0 ? STR_C(">") : STR_C("==");
+}
+
+int strverscmp_improved(const sd_char *a, const sd_char *b);
+
+/* Like startswith(), but operates on arbitrary memory blocks */
+static inline void *memory_startswith(const void *p, size_t sz, const sd_char *token) {
+        assert(token);
+
+        size_t n = strlen(token) * sizeof(sd_char);
+        if (sz < n)
+                return NULL;
+
+        assert(p);
+
+        if (memcmp(p, token, n) != 0)
+                return NULL;
+
+        return (uint8_t*) p + n;
+}
+
+#define _STRV_FOREACH(s, l, i)                                          \
+        for (typeof(*(l)) *s, *i = (l); (s = i) && *i; i++)
+
+#define STRV_FOREACH(s, l)                      \
+        _STRV_FOREACH(s, l, UNIQ_T(i, UNIQ))
+
+static inline bool ascii_isdigit(sd_char a) {
+        /* A pure ASCII, locale independent version of isdigit() */
+        return a >= '0' && a <= '9';
+}
+
+static inline bool ascii_ishex(sd_char a) {
+        return ascii_isdigit(a) || (a >= 'a' && a <= 'f') || (a >= 'A' && a <= 'F');
+}
+
+static inline bool ascii_isalpha(sd_char a) {
+        /* A pure ASCII, locale independent version of isalpha() */
+        return (a >= 'a' && a <= 'z') || (a >= 'A' && a <= 'Z');
+}