From 8aa3fcd31f72b70bf2ad23bb285f9675e2f17bca Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Wed, 29 Jan 2020 22:50:49 -0500
Subject: driver: write mode: implemented archive format logic.

---
 src/driver/tpax_driver_ctx.c    | 70 ++++++++++++++++++++++++++++++++++++++++-
 src/internal/tpax_driver_impl.h |  1 +
 src/skin/tpax_skin_default.c    |  5 +++
 3 files changed, 75 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/driver/tpax_driver_ctx.c b/src/driver/tpax_driver_ctx.c
index b43d129..675d836 100644
--- a/src/driver/tpax_driver_ctx.c
+++ b/src/driver/tpax_driver_ctx.c
@@ -23,6 +23,12 @@
 	| TPAX_DRIVER_EXEC_MODE_WRITE \
 	| TPAX_DRIVER_EXEC_MODE_COPY)
 
+#define TPAX_DRIVER_WRITE_FORMAT_MASK \
+	(TPAX_DRIVER_WRITE_FORMAT_PAX  \
+	| TPAX_DRIVER_WRITE_FORMAT_CPIO \
+	| TPAX_DRIVER_WRITE_FORMAT_USTAR \
+	| TPAX_DRIVER_WRITE_FORMAT_RUSTAR)
+
 /* package info */
 static const struct tpax_source_version tpax_src_version = {
 	TPAX_TAG_VER_MAJOR,
@@ -78,7 +84,7 @@ static int tpax_driver_usage(
 		"Synopsis:\n"
 		"       %s\n"
 		"       %s -r\n"
-		"       %s -w\n"
+		"       %s -w [−x format]\n"
 		"       %s -r -w\n\n"
 		"Options:\n",
 		program,program,program,program,program);
@@ -167,6 +173,25 @@ static int tpax_driver_usage_copy_mode(
 	return TPAX_USAGE;
 }
 
+static int tpax_driver_usage_write_format(
+	int				fdout,
+	const char *			program,
+	const char *			arg,
+	const struct argv_option **	optv,
+	struct argv_meta *		meta)
+{
+	tpax_driver_usage(
+		fdout,program,
+		arg,optv,meta);
+
+	tpax_dprintf(
+		fdout,
+		"\nArchive format may only be specified "
+		"in write mode.\n");
+
+	return TPAX_USAGE;
+}
+
 static int tpax_driver_error_not_implemented(
 	int				fdout,
 	const char *			program,
@@ -295,6 +320,20 @@ int tpax_get_driver_ctx(
 				case TAG_COPY:
 					cctx.drvflags |= TPAX_DRIVER_EXEC_MODE_COPY;
 					break;
+
+				case TAG_FORMAT:
+					cctx.drvflags &= ~(uint64_t)(TPAX_DRIVER_WRITE_FORMAT_MASK);
+
+					if (!strcmp(entry->arg,"pax"))
+						cctx.drvflags |= TPAX_DRIVER_WRITE_FORMAT_PAX;
+					else if (!strcmp(entry->arg,"cpio"))
+						cctx.drvflags |= TPAX_DRIVER_WRITE_FORMAT_CPIO;
+					else if (!strcmp(entry->arg,"ustar"))
+						cctx.drvflags |= TPAX_DRIVER_WRITE_FORMAT_USTAR;
+					else if (!strcmp(entry->arg,"rustar"))
+						cctx.drvflags |= TPAX_DRIVER_WRITE_FORMAT_RUSTAR;
+
+					break;
 			}
 		} else {
 			operand = entry;
@@ -372,6 +411,35 @@ int tpax_get_driver_ctx(
 			break;
 	}
 
+	/* archive format vs. execution mode*/
+	switch (cctx.drvflags & TPAX_DRIVER_EXEC_MODE_MASK) {
+		case TPAX_DRIVER_EXEC_MODE_WRITE:
+			if (!(cctx.drvflags & TPAX_DRIVER_WRITE_FORMAT_MASK))
+				cctx.drvflags |= TPAX_DRIVER_WRITE_FORMAT_USTAR;
+			break;
+
+		default:
+			if (cctx.drvflags & TPAX_DRIVER_WRITE_FORMAT_MASK)
+				return tpax_driver_usage_write_format(
+					fdctx->fderr,program,
+					entry->arg,optv,meta);
+	}
+
+	/* not implemented archive format(s) */
+	switch (cctx.drvflags & TPAX_DRIVER_WRITE_FORMAT_MASK) {
+		case TPAX_DRIVER_WRITE_FORMAT_PAX:
+			return tpax_driver_error_not_implemented(
+				fdctx->fderr,program,"the pax format",meta);
+
+		case TPAX_DRIVER_WRITE_FORMAT_CPIO:
+			return tpax_driver_error_not_implemented(
+				fdctx->fderr,program,"the cpio format",meta);
+
+		default:
+			break;
+	}
+
+	/* driver ctx */
 	if (!(ctx = tpax_driver_ctx_alloc(meta,fdctx,&cctx,nunits))) {
 		if (cctx.drvflags & TPAX_DRIVER_EXEC_MODE_COPY)
 			close(fddst);
diff --git a/src/internal/tpax_driver_impl.h b/src/internal/tpax_driver_impl.h
index 6d749b5..d061474 100644
--- a/src/internal/tpax_driver_impl.h
+++ b/src/internal/tpax_driver_impl.h
@@ -26,6 +26,7 @@ enum app_tags {
 	TAG_READ,
 	TAG_WRITE,
 	TAG_COPY,
+	TAG_FORMAT,
 };
 
 struct tpax_driver_ctx_impl {
diff --git a/src/skin/tpax_skin_default.c b/src/skin/tpax_skin_default.c
index eb7e363..69179be 100644
--- a/src/skin/tpax_skin_default.c
+++ b/src/skin/tpax_skin_default.c
@@ -21,5 +21,10 @@ const struct argv_option tpax_default_options[] = {
 			"copy mode (copy specified files "
 			"to a specified destination directory)"},
 
+
+	{"format",	'x',TAG_FORMAT,ARGV_OPTARG_REQUIRED,0,
+			"pax|cpio|ustar|rustar",0,
+			"archive format [%s]"},
+
 	{0,0,0,0,0,0,0,0}
 };
-- 
cgit v1.2.3