1 files changed, 52 insertions, 8 deletions

diff --git a/lib/strutils.c b/lib/strutils.c
index 6229a6e..9ea5da7 100644
--- a/lib/strutils.c
+++ b/lib/strutils.c
@@ -456,21 +456,28 @@ err:
 	errx(STRTOXX_EXIT_CODE, "%s: '%s'", errmesg, str);
 }
 
-long double strtold_or_err(const char *str, const char *errmesg)
+int ul_strtold(const char *str, long double *num)
 {
-	double num;
 	char *end = NULL;
 
 	errno = 0;
 	if (str == NULL || *str == '\0')
-		goto err;
-	num = strtold(str, &end);
+		return -(errno = EINVAL);
+	*num = strtold(str, &end);
 
-	if (errno || str == end || (end && *end))
-		goto err;
+	if (errno != 0)
+		return -errno;
+	if (str == end || (end && *end))
+		return -(errno = EINVAL);
+	return 0;
+}
 
-	return num;
-err:
+long double strtold_or_err(const char *str, const char *errmesg)
+{
+	long double num = 0;
+
+	if (ul_strtold(str, &num) == 0)
+		return num;
 	if (errno == ERANGE)
 		err(STRTOXX_EXIT_CODE, "%s: '%s'", errmesg, str);
 
@@ -1010,6 +1017,34 @@ int strappend(char **a, const char *b)
 	return 0;
 }
 
+/* the hybrid version of strfconcat and strappend. */
+int strfappend(char **a, const char *format, ...)
+{
+	va_list ap;
+	int res;
+
+	va_start(ap, format);
+	res = strvfappend(a, format, ap);
+	va_end(ap);
+
+	return res;
+}
+
+extern int strvfappend(char **a, const char *format, va_list ap)
+{
+	char *val;
+	int sz;
+	int res;
+
+	sz = vasprintf(&val, format, ap);
+	if (sz < 0)
+		return -errno;
+
+	res = strappend(a, val);
+	free(val);
+	return res;
+}
+
 static size_t strcspn_escaped(const char *s, const char *reject)
 {
         int escaped = 0;
@@ -1386,6 +1421,15 @@ int main(int argc, char *argv[])
 		printf("\"%s\" --> \"%s\"\n", argv[2], ul_strchr_escaped(argv[2], *argv[3]));
 		return EXIT_SUCCESS;
 
+	} else if (argc == 2 && strcmp(argv[1], "--next-string") == 0) {
+		char *buf = "abc\0Y\0\0xyz\0X";
+		char *end = buf + 12;
+		char *p = buf;
+
+		do {
+			printf("str: '%s'\n", p);
+		} while ((p = ul_next_string(p, end)));
+
 	} else {
 		fprintf(stderr, "usage: %1$s --size <number>[suffix]\n"
 				"       %1$s --cmp-paths <path> <path>\n"