[PATCH vkd3d 4/5] vkd3d-compiler: Add a --version option.

[Henri Verbeet]

Signed-off-by: Henri Verbeet 
---
 programs/vkd3d-compiler/main.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/programs/vkd3d-compiler/main.c b/programs/vkd3d-compiler/main.c
index e975572..1586b45 100644
--- a/programs/vkd3d-compiler/main.c
+++ b/programs/vkd3d-compiler/main.c
@@ -33,6 +33,7 @@ enum
 {
     OPTION_HELP = CHAR_MAX + 1,
     OPTION_STRIP_DEBUG,
+    OPTION_VERSION,
 };

static bool read_shader(struct vkd3d_shader_code *shader, const char *filename)
@@ -101,6 +102,7 @@ static void print_usage(const char *program_name)
         "  -h, --help           Display this information and exit.\n"
         "  -o <file>            Write the output to <file>.\n"
         "  --strip-debug        Strip debug information from the output.\n"
+        "  -V, --version        Display version information and exit.\n"
         "  --                   Stop option processing. Any subsequent argument is\n"
         "                       interpreted as a filename.\n";

@@ -111,6 +113,7 @@ struct options
 {
     const char *filename;
     const char *output_filename;
+    bool print_version;

struct vkd3d_shader_compile_option compile_options[MAX_COMPILE_OPTIONS];
     unsigned int compile_option_count;
@@ -152,6 +155,7 @@ static bool parse_command_line(int argc, char **argv, struct options *options)
     {
         {"help",        no_argument, NULL, OPTION_HELP},
         {"strip-debug", no_argument, NULL, OPTION_STRIP_DEBUG},
+        {"version",     no_argument, NULL, OPTION_VERSION},
         {NULL,          0,           NULL, 0},
     };

@@ -159,7 +163,7 @@ static bool parse_command_line(int argc, char **argv, struct options *options)

for (;;)
     {
-        if ((option = getopt_long(argc, argv, "ho:", long_options, NULL)) == -1)
+        if ((option = getopt_long(argc, argv, "ho:V", long_options, NULL)) == -1)
             break;

switch (option)
@@ -172,6 +176,11 @@ static bool parse_command_line(int argc, char **argv, struct options *options)
                 add_compile_option(options, VKD3D_SHADER_COMPILE_OPTION_STRIP_DEBUG, 1);
                 break;

+            case OPTION_VERSION:
+            case 'V':
+                options->print_version = true;
+                return true;
+
             default:
                 return false;
         }
@@ -198,6 +207,12 @@ int main(int argc, char **argv)
         return 1;
     }

+    if (options.print_version)
+    {
+        fprintf(stdout, "vkd3d shader compiler version " PACKAGE_VERSION "\n");
+        return 0;
+    }
+
     info.type = VKD3D_SHADER_STRUCTURE_TYPE_COMPILE_INFO;
     info.next = NULL;
     info.source_type = VKD3D_SHADER_SOURCE_DXBC_TPF;