Make most function parameters const

More const never hurts in general, but in particular this allows the compiler
to make better nullability deductions, which reduces the amount of manual
nullability casting required.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/serdi.c b/src/serdi.c
index a1d8097e..4e06ac95 100644
--- a/src/serdi.c
+++ b/src/serdi.c
@@ -56,7 +56,7 @@ static const Syntax syntaxes[] = {{SERD_TURTLE, "turtle", ".ttl"},
                                   {(SerdSyntax)0, NULL, NULL}};
 
 static SerdSyntax
-get_syntax(const char* name)
+get_syntax(const char* const name)
 {
   for (const Syntax* s = syntaxes; s->name; ++s) {
     if (!serd_strncasecmp(s->name, name, strlen(name))) {
@@ -69,7 +69,7 @@ get_syntax(const char* name)
 }
 
 static SERD_PURE_FUNC SerdSyntax
-guess_syntax(const char* filename)
+guess_syntax(const char* const filename)
 {
   const char* ext = strrchr(filename, '.');
   if (ext) {
@@ -95,7 +95,7 @@ print_version(void)
 }
 
 static int
-print_usage(const char* name, bool error)
+print_usage(const char* const name, const bool error)
 {
   FILE* const os = error ? stderr : stdout;
   fprintf(os, "%s", error ? "\n" : "");
@@ -120,14 +120,14 @@ print_usage(const char* name, bool error)
 }
 
 static int
-missing_arg(const char* name, char opt)
+missing_arg(const char* const name, const char opt)
 {
   SERDI_ERRORF("option requires an argument -- '%c'\n", opt);
   return print_usage(name, true);
 }
 
 static SerdStatus
-quiet_error_sink(void* handle, const SerdError* e)
+quiet_error_sink(void* const handle, const SerdError* const e)
 {
   (void)handle;
   (void)e;
@@ -135,7 +135,7 @@ quiet_error_sink(void* handle, const SerdError* e)
 }
 
 static FILE*
-serd_fopen(const char* path, const char* mode)
+serd_fopen(const char* const path, const char* const mode)
 {
   FILE* fd = fopen(path, mode);
   if (!fd) {