8 files changed, 50 insertions, 3 deletions

diff --git a/.gitignore b/.gitignore
index df4b72b..740825f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 *.a
 *.so
 *.so.*
+/test
 /Makefile
 /Makefile.in
 /aclocal.m4
diff --git a/Makefile.am b/Makefile.am
index f2695f1..e952730 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,6 +2,8 @@ libdir = $(bindir)
 
 ACLOCAL_AMFLAGS = -I m4
 
+noinst_PROGRAMS = test
+
 lib_LTLIBRARIES = libwinterop.la libmsi.la libpreload.la
 
 libwinterop_la_SOURCES = makecab.c readcab.c winterop-stubs.c           \
@@ -9,11 +11,14 @@ memory.c memory.h dupstr.c dupstr.h subproc.c subproc.h uchars.c	\
 uchars.h
 
 libmsi_la_SOURCES = makemsi.c md5.c memory.c memory.h version.c \
-dupstr.c dupstr.h subproc.c subproc.h uchars.c uchars.h
+dupstr.c dupstr.h subproc.c subproc.h uchars.c uchars.h api.h
 
 libpreload_la_SOURCES = preload.c
 libpreload_la_LDFLAGS = -ldl
 
+test_SOURCES = test.c api.h misc.h
+test_LDADD = libmsi.la
+
 bin_SCRIPTS = wrapper.py makecab.py
 
 install-exec-hook:
diff --git a/api.h b/api.h
new file mode 100644
index 0000000..5fc2d27
--- /dev/null
+++ b/api.h
@@ -0,0 +1,6 @@
+#include <stdint.h>
+#include <uchar.h>
+
+uint32_t MsiGetFileVersionW(const char16_t *filename,
+                            char16_t *version, uint32_t *version_size,
+                            char16_t *language, uint32_t *language_size);
diff --git a/misc.h b/misc.h
new file mode 100644
index 0000000..3050bab
--- /dev/null
+++ b/misc.h
@@ -0,0 +1 @@
+#define lenof(x) (sizeof(x)/sizeof(*(x)))
diff --git a/test.c b/test.c
new file mode 100644
index 0000000..bc1bdb8
--- /dev/null
+++ b/test.c
@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#include "misc.h"
+#include "uchars.h"
+#include "api.h"
+
+int main(int argc, char **argv)
+{
+    if (argc > 2 && !strcmp(argv[1], "version")) {
+        const char *filename8 = argv[2];
+        char16_t filename16[4096];
+        uint32_t filename16size = lenof(filename16);
+        c16cpy(filename16, &filename16size, filename8);
+        char16_t version[4096], language[4096];
+        uint32_t versionsize = lenof(version), languagesize = lenof(language);
+        uint32_t retd =
+            MsiGetFileVersionW(filename16, version, &versionsize,
+                               language, &languagesize);
+        printf("MsiGetFileVersionW(\"%s\") = %"PRId32"\n", filename8, retd);
+        if (retd == 0) {
+            printf("  version = \"%s\"\n  language = \"%s\"\n",
+                   ascii(version, false), ascii(language, false));
+        }
+    } else {
+        fprintf(stderr, "usage: ./test version <file>\n");
+        return 1;
+    }
+    return 0;
+}
diff --git a/uchars.c b/uchars.c
index 5f09f60..7e7967f 100644
--- a/uchars.c
+++ b/uchars.c
@@ -16,7 +16,7 @@ char *ascii(const char16_t *wstr, bool translate_slashes)
     return ret;
 }
 
-void c16cpy(char16_t *out, uint32_t *outsize, char *s)
+void c16cpy(char16_t *out, uint32_t *outsize, const char *s)
 {
     uint32_t retlen = 0;
     while (retlen < *outsize) {
diff --git a/uchars.h b/uchars.h
index 6e68e7c..925593b 100644
--- a/uchars.h
+++ b/uchars.h
@@ -3,4 +3,4 @@
 #include <stdbool.h>
 
 char *ascii(const char16_t *wstr, bool translate_slashes);
-void c16cpy(char16_t *out, uint32_t *outsize, char *s);
+void c16cpy(char16_t *out, uint32_t *outsize, const char *s);
diff --git a/version.c b/version.c
index 2ba7372..7a48a5f 100644
--- a/version.c
+++ b/version.c
@@ -11,6 +11,7 @@
 
 #include "memory.h"
 #include "uchars.h"
+#include "api.h"
 
 uint32_t MsiGetFileVersionW(const char16_t *filename,
                             char16_t *version, uint32_t *version_size,