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-rw-r--r--scripts/kconfig/util.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
new file mode 100644
index 000000000..29585394d
--- /dev/null
+++ b/scripts/kconfig/util.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
+ * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
+ */
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include "lkc.h"
+
+/* file already present in list? If not add it */
+struct file *file_lookup(const char *name)
+{
+ struct file *file;
+
+ for (file = file_list; file; file = file->next) {
+ if (!strcmp(name, file->name)) {
+ return file;
+ }
+ }
+
+ file = xmalloc(sizeof(*file));
+ memset(file, 0, sizeof(*file));
+ file->name = xstrdup(name);
+ file->next = file_list;
+ file_list = file;
+ return file;
+}
+
+/* Allocate initial growable string */
+struct gstr str_new(void)
+{
+ struct gstr gs;
+ gs.s = xmalloc(sizeof(char) * 64);
+ gs.len = 64;
+ gs.max_width = 0;
+ strcpy(gs.s, "\0");
+ return gs;
+}
+
+/* Free storage for growable string */
+void str_free(struct gstr *gs)
+{
+ if (gs->s)
+ free(gs->s);
+ gs->s = NULL;
+ gs->len = 0;
+}
+
+/* Append to growable string */
+void str_append(struct gstr *gs, const char *s)
+{
+ size_t l;
+ if (s) {
+ l = strlen(gs->s) + strlen(s) + 1;
+ if (l > gs->len) {
+ gs->s = xrealloc(gs->s, l);
+ gs->len = l;
+ }
+ strcat(gs->s, s);
+ }
+}
+
+/* Append printf formatted string to growable string */
+void str_printf(struct gstr *gs, const char *fmt, ...)
+{
+ va_list ap;
+ char s[10000]; /* big enough... */
+ va_start(ap, fmt);
+ vsnprintf(s, sizeof(s), fmt, ap);
+ str_append(gs, s);
+ va_end(ap);
+}
+
+/* Retrieve value of growable string */
+const char *str_get(struct gstr *gs)
+{
+ return gs->s;
+}
+
+void *xmalloc(size_t size)
+{
+ void *p = malloc(size);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}
+
+void *xcalloc(size_t nmemb, size_t size)
+{
+ void *p = calloc(nmemb, size);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}
+
+void *xrealloc(void *p, size_t size)
+{
+ p = realloc(p, size);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}
+
+char *xstrdup(const char *s)
+{
+ char *p;
+
+ p = strdup(s);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}
+
+char *xstrndup(const char *s, size_t n)
+{
+ char *p;
+
+ p = strndup(s, n);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}