#define _LGPL_SOURCE
#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <type_traits>
+#include <assert.h>
+#include <errno.h>
+#include <stdarg.h>
#include "string-utils.h"
#include "../macros.h"
return count;
}
+
+int strutils_append_str(char **s, const char *append)
+{
+ char *old = *s;
+ char *new_str;
+ size_t oldlen = (old == NULL) ? 0 : strlen(old);
+ size_t appendlen = strlen(append);
+
+ new_str = (char *) zmalloc(oldlen + appendlen + 1);
+ if (!new_str) {
+ return -ENOMEM;
+ }
+ if (oldlen) {
+ strcpy(new_str, old);
+ }
+ strcat(new_str, append);
+ *s = new_str;
+ free(old);
+ return 0;
+}
+
+int strutils_appendf(char **s, const char *fmt, ...)
+{
+ char *new_str;
+ size_t oldlen = (*s) ? strlen(*s) : 0;
+ int ret;
+ va_list args;
+
+ /* Compute length of formatted string we append. */
+ va_start(args, fmt);
+ ret = vsnprintf(NULL, 0, fmt, args);
+ va_end(args);
+
+ if (ret == -1) {
+ goto end;
+ }
+
+ /* Allocate space for old string + new string + \0. */
+ new_str = (char *) zmalloc(oldlen + ret + 1);
+ if (!new_str) {
+ ret = -ENOMEM;
+ goto end;
+ }
+
+ /* Copy old string, if there was one. */
+ if (oldlen) {
+ strcpy(new_str, *s);
+ }
+
+ /* Format new string in-place. */
+ va_start(args, fmt);
+ ret = vsprintf(&new_str[oldlen], fmt, args);
+ va_end(args);
+
+ if (ret == -1) {
+ ret = -1;
+ goto end;
+ }
+
+ free(*s);
+ *s = new_str;
+ new_str = NULL;
+
+end:
+ return ret;
+}