From: Karel Zak <kzak@redhat.com>
Date: Wed, 18 Dec 2013 09:22:32 +0000 (+0100)
Subject: libsmartcols: add function to convert table to string
X-Git-Tag: v2.25-rc1~375
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2a965b804ac754ef3c36f753af0ae988b4e79bb3;p=thirdparty%2Futil-linux.git

libsmartcols: add function to convert table to string

Note that open_memstream() is POSIX-1.2008, so it's possible than not
all libc have already implemented this function.

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/configure.ac b/configure.ac
index 5e43dc1459..188bf96559 100644
--- a/configure.ac
+++ b/configure.ac
@@ -307,6 +307,7 @@ AC_CHECK_FUNCS([ \
 	lseek64 \
 	mempcpy \
 	nanosleep \
+	open_memstream \
 	personality \
 	posix_fadvise \
 	prctl \
diff --git a/libsmartcols/src/libsmartcols.h.in b/libsmartcols/src/libsmartcols.h.in
index 93b205e2f0..8a61668bf7 100644
--- a/libsmartcols/src/libsmartcols.h.in
+++ b/libsmartcols/src/libsmartcols.h.in
@@ -138,6 +138,7 @@ extern int scols_table_reduce_termwidth(struct libscols_table *tb, size_t reduce
 
 /* table_print.c */
 extern int scols_print_table(struct libscols_table *tb);
+extern int scols_print_table_to_string(struct libscols_table *tb, char **data);
 
 #ifdef __cplusplus
 }
diff --git a/libsmartcols/src/table_print.c b/libsmartcols/src/table_print.c
index 7da79598a4..8f0297a4c9 100644
--- a/libsmartcols/src/table_print.c
+++ b/libsmartcols/src/table_print.c
@@ -581,3 +581,28 @@ int scols_print_table(struct libscols_table *tb)
 	free(line);
 	return 0;
 }
+
+int scols_print_table_to_string(struct libscols_table *tb, char **data)
+{
+#ifdef HAVE_OPEN_MEMSTREAM
+	FILE *stream;
+	size_t sz;
+
+	if (!tb)
+		return -EINVAL;
+
+	/* create a streem for output */
+	stream = open_memstream(data, &sz);
+	if (!stream)
+		return -ENOMEM;
+
+	scols_table_set_stream(tb, stream);
+	scols_print_table(tb);
+	fclose(stream);
+
+	return 0;
+#else
+	return -ENOSYS;
+#endif
+}
+