[PATCH vkd3d] vkd3d-compiler: Write to stdout if the output file is -.

[Zebediah Figura]

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
---
I've found this feature to be occasionally useful.

 programs/vkd3d-compiler/main.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/programs/vkd3d-compiler/main.c b/programs/vkd3d-compiler/main.c
index 68bc030b..a1adb616 100644
--- a/programs/vkd3d-compiler/main.c
+++ b/programs/vkd3d-compiler/main.c
@@ -119,7 +119,11 @@ static bool write_shader(const struct vkd3d_shader_code *shader, const char *fil
 {
     FILE *fd;
 
-    if (!(fd = fopen(filename, "wb")))
+    if (!strcmp(filename, "-"))
+    {
+        fd = stdout;
+    }
+    else if (!(fd = fopen(filename, "wb")))
     {
         fprintf(stderr, "Cannot open file for writing: '%s'.\n", filename);
         return false;
@@ -128,7 +132,8 @@ static bool write_shader(const struct vkd3d_shader_code *shader, const char *fil
     if (fwrite(shader->code, 1, shader->size, fd) != shader->size)
         fprintf(stderr, "Could not write shader bytecode to file: '%s'.\n", filename);
 
-    fclose(fd);
+    if (fd != stdout)
+        fclose(fd);
     return true;
 }
 
@@ -143,7 +148,8 @@ static void print_usage(const char *program_name)
         "  --buffer-uav=<type>   Specify the buffer type to use for buffer UAV bindings.\n"
         "                        Valid values are 'buffer-texture' (default) and\n"
         "                        'storage-buffer'.\n"
-        "  -o, --output=<file>   Write the output to <file>.\n"
+        "  -o, --output=<file>   Write the output to <file>. If <file> is -, write to\n"
+        "                        standard output.\n"
         "  --print-source-types  Display the supported source types and exit.\n"
         "  --print-target-types  Display the supported target types for the specified\n"
         "                        source type and exit.\n"
-- 
2.27.0