From 9f55a17009446a7586a3694edb0b54988e201e7f Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 23 Oct 2021 18:19:08 +0000
Subject: item queue: implemented tpax_append_prefix_item().

---
 src/logic/tpax_archive_append.c | 55 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 53 insertions(+), 2 deletions(-)

(limited to 'src/logic')

diff --git a/src/logic/tpax_archive_append.c b/src/logic/tpax_archive_append.c
index 4bc3d2f..d8ac12f 100644
--- a/src/logic/tpax_archive_append.c
+++ b/src/logic/tpax_archive_append.c
@@ -49,6 +49,49 @@ static int tpax_archive_append_memory_data(
 	return 0;
 }
 
+static char * tpax_append_prefix_item(
+	const struct tpax_driver_ctx *  dctx,
+	const char *                    prefix)
+{
+	struct tpax_driver_ctx_impl *   ictx;
+	char **                         prefv;
+	char **                         psrc;
+	char **                         pdst;
+	off_t                           elements;
+	char *                          pitem;
+
+	ictx = tpax_get_driver_ictx(dctx);
+
+	for (psrc=ictx->prefixv; *psrc; psrc++)
+		if (!strcmp(*psrc,prefix))
+			return *psrc;
+
+	if (ictx->prefixp == ictx->prefcap) {
+		elements  = ictx->prefcap - ictx->prefixv;
+		elements += 256;
+
+		if (!(prefv = calloc(elements,sizeof(char *))))
+			return 0;
+
+		for (psrc=ictx->prefixv,pdst=prefv; *psrc; psrc++,pdst++)
+			*pdst = *psrc;
+
+		if (ictx->prefixv != ictx->prefptr)
+			free(ictx->prefixv);
+
+		ictx->prefixv = prefv;
+		ictx->prefixp = pdst;
+		ictx->prefcap = &prefv[--elements];
+	}
+
+	if (!(pitem = strdup(prefix)))
+		return 0;
+
+	*ictx->prefixp++ = pitem;
+
+	return pitem;
+}
+
 static int tpax_archive_append_pad(
 	const struct tpax_driver_ctx *  dctx,
 	int                             fdout,
@@ -144,11 +187,12 @@ static int tpax_archive_append_queue_item(
 	const struct tpax_driver_ctx *  dctx,
 	const struct dirent *           dirent,
 	const struct tpax_dirent *      parent,
+	const char *                    prefix,
 	struct tpax_unit_ctx *          unit,
 	int                             depth,
+	int                             flags,
 	int                             fd,
 	bool *                          fkeep)
-
 {
 	struct tpax_dirent_buffer *     dentbuf;
 	struct tpax_dirent *            cdent;
@@ -183,8 +227,10 @@ static int tpax_archive_append_queue_item(
 
 	cdent->fdat   = fd;
 	cdent->depth  = depth;
+	cdent->flags  = flags;
 	cdent->nsize  = needed;
 	cdent->parent = parent;
+	cdent->prefix = prefix;
 
 	memset(&cdent->dirent,0,offsetof(struct dirent,d_name));
 
@@ -510,7 +556,8 @@ static int tpax_archive_append_dir(
 			if (dirent->d_type == DT_DIR) {
 				if (tpax_archive_append_queue_item(
 						dctx,dirent,
-						parent,unit,depth,
+						parent,0,unit,depth,
+						TPAX_ITEM_IMPLICIT,
 						fd,&fkeep) < 0)
 					return tpax_archive_append_ret(
 						TPAX_NESTED_ERROR(dctx),
@@ -598,6 +645,10 @@ int tpax_archive_append(
 		for (++prefix; *prefix=='/'; prefix++)
 			(void)0;
 
+	if (prefix)
+		if (!(prefix = tpax_append_prefix_item(dctx,prefix)))
+			return TPAX_BUFFER_ERROR(dctx);
+
 	/* append explicit item */
 	tpax_archive_append_impl(dctx,uctx,0,prefix,0);
 
-- 
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