From 00693f2324318f196cab57823526d3133fa7a146 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 25 Apr 2023 15:11:24 -0400
Subject: gzip: Add write direction

---
(limited to 'src/gzip.h')

diff --git a/src/gzip.h b/src/gzip.h
index e4c3f52..1fd5d5e 100644
--- a/src/gzip.h
+++ b/src/gzip.h
@@ -23,6 +23,7 @@
 struct opkg_opk_gzip;
 
 typedef int (opkg_opk_gzip_read_func)(void *, char **, size_t *);
+typedef int (opkg_opk_gzip_write_func)(void *, size_t);
 
 /*
  * Allocates and initializes a decompression structure.
@@ -41,7 +42,11 @@ typedef int (opkg_opk_gzip_read_func)(void *, char **, size_t *);
  * - NULL on memory exhaustion.
  */
 struct opkg_opk_gzip *
-opkg_opk_gzip_init(opkg_opk_gzip_read_func *read, void *user_data);
+opkg_opk_gzip_init_read(opkg_opk_gzip_read_func *read, void *user_data);
+
+struct opkg_opk_gzip *
+opkg_opk_gzip_init_write(char *buffer, size_t size,
+		opkg_opk_gzip_write_func *write, void *user_data);
 
 /*
  * Reads and decompresses data to output the next record (512 octets).
@@ -57,12 +62,16 @@ opkg_opk_gzip_init(opkg_opk_gzip_read_func *read, void *user_data);
 int
 opkg_opk_gzip_read(struct opkg_opk_gzip *gzip, void *record);
 
+int
+opkg_opk_gzip_write(struct opkg_opk_gzip *gzip, void *record, size_t size,
+		int last);
+
 /*
  * Frees a decompression structure.
  * Parameters:
  * - gzip: Decompression structure.
  */
-void
+int
 opkg_opk_gzip_free(struct opkg_opk_gzip *gzip);
 
 #endif  /* OPKG_OPK_GZIP_H_ */
--
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