mark all functions in headers with VIS_EXPORT or VIS_INTERNAL

if vis actually wants to be a library exported symbols may need
mark up depending on the platform (eg. __declspec(dllexport)).
This needs to be hidden behind a macro because the way you export
is not the same on every platform.

I did this based on the assumption that vis.h was supposed to be
the only interface to the "vis" library. Since nobody actually
uses vis as a library I have no idea if this is actually correct.

Anyway marking up all prototypes like this allows for one to
convert all functions to static if a single translation unit is
used by inserting at the start:

 #define VIS_INTERNAL static
 #define VIS_EXPORT   static

1 files changed, 11 insertions, 11 deletions

diff --git a/text-internal.h b/text-internal.h
index 5ed84ae..3f9052f 100644
--- a/text-internal.h
+++ b/text-internal.h
@@ -19,17 +19,17 @@ typedef struct {
 	} type;
 } Block;
 
-Block *block_alloc(size_t size);
-Block *block_read(size_t size, int fd);
-Block *block_mmap(size_t size, int fd, off_t offset);
-Block *block_load(int dirfd, const char *filename, enum TextLoadMethod method, struct stat *info);
-void block_free(Block*);
-bool block_capacity(Block*, size_t len);
-const char *block_append(Block*, const char *data, size_t len);
-bool block_insert(Block*, size_t pos, const char *data, size_t len);
-bool block_delete(Block*, size_t pos, size_t len);
+VIS_INTERNAL Block *block_alloc(size_t size);
+VIS_INTERNAL Block *block_read(size_t size, int fd);
+VIS_INTERNAL Block *block_mmap(size_t size, int fd, off_t offset);
+VIS_INTERNAL Block *block_load(int dirfd, const char *filename, enum TextLoadMethod method, struct stat *info);
+VIS_INTERNAL void block_free(Block*);
+VIS_INTERNAL bool block_capacity(Block*, size_t len);
+VIS_INTERNAL const char *block_append(Block*, const char *data, size_t len);
+VIS_INTERNAL bool block_insert(Block*, size_t pos, const char *data, size_t len);
+VIS_INTERNAL bool block_delete(Block*, size_t pos, size_t len);
 
-Block *text_block_mmaped(Text*);
-void text_saved(Text*, struct stat *meta);
+VIS_INTERNAL Block *text_block_mmaped(Text*);
+VIS_INTERNAL void text_saved(Text*, struct stat *meta);
 
 #endif