From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sun, 28 Sep 2025 09:04:19 +0000 (+0000)
Subject: args: Implement pushing arguments to the array
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42959fef277cd2a1ed40d169a1c71886189d6e52;p=telemetry.git

args: Implement pushing arguments to the array

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/daemon/args.c b/src/daemon/args.c
index 915d920..ed7368b 100644
--- a/src/daemon/args.c
+++ b/src/daemon/args.c
@@ -20,6 +20,7 @@
 
 #include <errno.h>
 #include <stddef.h>
+#include <stdio.h>
 #include <stdlib.h>
 
 #include "args.h"
@@ -28,9 +29,18 @@
 struct collecty_args {
 	collecty_ctx* ctx;
 	int nrefs;
+
+	// Arguments
+	char** argv;
+	int argc;
 };
 
 static void collecty_args_free(collecty_args* self) {
+	if (self->argv) {
+		for (int i = 0; i < self->argc; i++)
+			free(self->argv[i]);
+		free(self->argv);
+	}
 	if (self->ctx)
 		collecty_ctx_unref(self->ctx);
 	free(self);
@@ -67,3 +77,40 @@ collecty_args* collecty_args_unref(collecty_args* self) {
 	collecty_args_free(self);
 	return NULL;
 }
+
+int collecty_args_push(collecty_args* self, const char* format, ...) {
+	char** argv = NULL;
+	char* arg = NULL;
+	va_list args;
+	int r;
+
+	// Format the argument
+	va_start(args, format);
+	r = vasprintf(&arg, format, args);
+	va_end(args);
+
+	// Abort if we could not format the string
+	if (r < 0)
+		goto ERROR;
+
+	// Grow argv
+	argv = reallocarray(self->argv, self->argc + 1, sizeof(*self->argv));
+	if (!argv)
+		goto ERROR;
+
+	// Reference the string
+	argv[self->argc + 0] = arg;
+	argv[self->argc + 1] = NULL;
+
+	// Replace the array and increment the counter
+	self->argv = argv;
+	self->argc++;
+
+	return 0;
+
+ERROR:
+	if (arg)
+		free(arg);
+
+	return -errno;
+}
diff --git a/src/daemon/args.h b/src/daemon/args.h
index 458a4ee..f108e03 100644
--- a/src/daemon/args.h
+++ b/src/daemon/args.h
@@ -30,4 +30,7 @@ int collecty_args_create(collecty_args** args, collecty_ctx* ctx);
 collecty_args* collecty_args_ref(collecty_args* self);
 collecty_args* collecty_args_unref(collecty_args* self);
 
+int collecty_args_push(collecty_args* self, const char* format, ...)
+	__attribute__((format(printf, 2, 3)));
+
 #endif /* COLLECTY_ARGS_H */