From 20fd0255d7865ff45be6f63ad540d45e214d41c8 Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Mon, 13 Nov 2023 14:14:02 +0100
Subject: [PATCH] WIP: asm step

---
 include/ulas.h |  6 +++++-
 src/ulas.c     | 27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/ulas.h b/include/ulas.h
index b1df177..d5d4178 100644
--- a/include/ulas.h
+++ b/include/ulas.h
@@ -291,9 +291,13 @@ char *ulas_preprocexpand(struct ulas_preproc *pp, const char *raw_line,
                          size_t *n);
 
 /**
- * Assembly step 
+ * Assembly step
  */
 
+// returns 0 if no more data can be read
+//         > 0 if data was read
+//         -1 on error
+int ulas_asmnext(FILE *dst, FILE *src, char *buf, int n);
 int ulas_asm(FILE *dst, FILE *src);
 
 #endif
diff --git a/src/ulas.c b/src/ulas.c
index 8aca72d..630b472 100644
--- a/src/ulas.c
+++ b/src/ulas.c
@@ -689,8 +689,35 @@ int ulas_preproc(FILE *dst, FILE *src) {
  * Assembly step
  */
 
+int ulas_asmnext(FILE *dst, FILE *src, char *buf, int n) {
+  int rc = 1;
+  if (fgets(buf, n, src) != NULL) {
+    ulas.line++;
+
+    fprintf(dst, "%s", buf);
+    // size_t buflen = strlen(buf);
+  } else {
+    rc = 0;
+  }
+  return rc;
+}
+
 int ulas_asm(FILE *dst, FILE *src) {
+  char buf[ULAS_LINEMAX];
+  memset(buf, 0, ULAS_LINEMAX);
   int rc = 0;
 
+  // init
+  struct ulas_preproc pp = ulas_preprocinit();
+
+  // preproc
+  while ((rc = ulas_asmnext(dst, src, buf, ULAS_LINEMAX)) > 0) {
+  }
+
+  // cleanup
+  ulas_preprocfree(&pp);
+
+  return rc;
+
   return rc;
 }
-- 
2.30.2