fileio: fputs_with_space → _with_separator and modernization

src/basic/fileio.c

@@ -1327,33 +1327,31 @@ int read_timestamp_file(const char *fn, usec_t *ret) {
         return 0;
 }
 
-int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space) {
-        int r;
-
+int fputs_with_separator(FILE *f, const char *s, const char *separator, bool *space) {
         assert(s);
+        assert(space);
 
-        /* Outputs the specified string with fputs(), but optionally prefixes it with a separator. The *space parameter
-         * when specified shall initially point to a boolean variable initialized to false. It is set to true after the
-         * first invocation. This call is supposed to be use in loops, where a separator shall be inserted between each
-         * element, but not before the first one. */
+        /* Outputs the specified string with fputs(), but optionally prefixes it with a separator.
+         * The *space parameter when specified shall initially point to a boolean variable initialized
+         * to false. It is set to true after the first invocation. This call is supposed to be use in loops,
+         * where a separator shall be inserted between each element, but not before the first one. */
 
         if (!f)
                 f = stdout;
 
-        if (space) {
-                if (!separator)
-                        separator = " ";
+        if (!separator)
+                separator = " ";
 
-                if (*space) {
-                        r = fputs(separator, f);
-                        if (r < 0)
-                                return r;
-                }
+        if (*space)
+                if (fputs(separator, f) < 0)
+                        return -EIO;
 
-                *space = true;
-        }
+        *space = true;
 
-        return fputs(s, f);
+        if (fputs(s, f) < 0)
+                return -EIO;
+
+        return 0;
 }
 
 /* A bitmask of the EOL markers we know */

src/basic/fileio.h

@@ -143,7 +143,7 @@ int fflush_sync_and_check(FILE *f);
 int write_timestamp_file_atomic(const char *fn, usec_t n);
 int read_timestamp_file(const char *fn, usec_t *ret);
 
-int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space);
+int fputs_with_separator(FILE *f, const char *s, const char *separator, bool *space);
 
 typedef enum ReadLineFlags {
         READ_LINE_ONLY_NUL  = 1 << 0,

src/basic/ordered-set.c

@@ -91,13 +91,16 @@ void ordered_set_print(FILE *f, const char *field, OrderedSet *s) {
         bool space = false;
         char *p;
 
+        assert(f);
+        assert(field);
+
         if (ordered_set_isempty(s))
                 return;
 
         fputs(field, f);
 
         ORDERED_SET_FOREACH(p, s)
-                fputs_with_space(f, p, NULL, &space);
+                fputs_with_separator(f, p, NULL, &space);
 
         fputc('\n', f);
 }

src/basic/strv.c

@@ -894,13 +894,15 @@ int fputstrv(FILE *f, char * const *l, const char *separator, bool *space) {
         bool b = false;
         int r;
 
+        assert(f);
+
         /* Like fputs(), but for strv, and with a less stupid argument order */
 
         if (!space)
                 space = &b;
 
         STRV_FOREACH(s, l) {
-                r = fputs_with_space(f, *s, separator, space);
+                r = fputs_with_separator(f, *s, separator, space);
                 if (r < 0)
                         return r;
         }

src/network/networkd-state-file.c

@@ -537,7 +537,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
         assert(f);
 
         ORDERED_SET_FOREACH(p, static_domains)
-                fputs_with_space(f, p, NULL, &space);
+                fputs_with_separator(f, p, NULL, &space);
 
         if (use_domains == DHCP_USE_DOMAINS_NO)
                 return;
@@ -547,7 +547,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
                 char **domains;
 
                 if (sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname) >= 0)
-                        fputs_with_space(f, domainname, NULL, &space);
+                        fputs_with_separator(f, domainname, NULL, &space);
                 if (sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains) >= 0)
                         fputstrv(f, domains, NULL, &space);
         }
@@ -563,7 +563,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
                 NDiscDNSSL *dd;
 
                 SET_FOREACH(dd, link->ndisc_dnssl)
-                        fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
+                        fputs_with_separator(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
         }
 }
 
@@ -652,7 +652,7 @@ static int link_save(Link *link) {
                         if (!escaped)
                                 return -ENOMEM;
 
-                        fputs_with_space(f, escaped, ":", &space);
+                        fputs_with_separator(f, escaped, ":", &space);
                 }
                 fputs("\"\n", f);
 
@@ -782,7 +782,7 @@ static int link_save(Link *link) {
                         fputs("DNSSEC_NTA=", f);
                         space = false;
                         SET_FOREACH(n, nta_anchors)
-                                fputs_with_space(f, n, NULL, &space);
+                                fputs_with_separator(f, n, NULL, &space);
                         fputc('\n', f);
                 }
         }