1 files changed, 47 insertions, 0 deletions
diff --git a/plugins/static/buffer.c b/plugins/static/buffer.c
new file mode 100644
index 0000000..04db027
--- /dev/null
+++ b/plugins/static/buffer.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "memory.h"
+#include "buffer.h"
+
+
+struct buffer buffer_make(size_t capacity) {
+	struct buffer buffer = (struct buffer){malloc(capacity, char), capacity + 1, 0};
+	return buffer;
+}
+
+void buffer_free(struct buffer buffer) {
+	free(buffer.buf);
+}
+
+void buffer_append_mem(struct buffer *buffer, const char *str, size_t len) {
+	if (buffer->len + len >= buffer->cap) {
+		do buffer->cap *= 2; while (buffer->len + len >= buffer->cap);
+		buffer->buf = realloc(buffer->buf, buffer->cap, char);
+	}
+	memcpy(buffer->buf + buffer->len, str, len);
+	buffer->len += len;
+	buffer->buf[buffer->len] = 0;
+}
+
+void buffer_append_str(struct buffer *buffer, const char *str) {
+	buffer_append_mem(buffer, str, strlen(str));
+}
+
+// returns whether successful
+bool buffer_append_file(struct buffer *buffer, const char *path) {
+	FILE *f = fopen(path, "rb");
+	if (!f) return false;
+
+	char block[4096];
+	while (true) {
+		size_t nr = fread(block, 1, sizeof block, f);
+		if (nr > 0) buffer_append_mem(buffer, block, nr);
+		if (nr < sizeof block) break;
+	}
+
+	bool has_error = ferror(f);
+	fclose(f);
+	return !has_error;
+}