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glcpp: Add --disable-line-continuations argument to standalone glcpp

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This will allow testing of disabled line-continuation on a case-by-case basis,
(with the option communicated to the preprocessor via the GL context).

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Carl Worth 2012-12-05 13:15:48 -08:00
parent 409dee5eac
commit 63d156900f
1 changed files with 44 additions and 2 deletions
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46
src/glsl/glcpp/glcpp.c
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@ -24,6 +24,8 @@
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include "glcpp.h"
#include "main/mtypes.h"
#include "main/shaderobj.h"
@ -100,8 +102,31 @@ static void
init_fake_gl_context (struct gl_context *gl_ctx)
{
gl_ctx->API = API_OPENGL_COMPAT;
gl_ctx->Const.DisableGLSLLineContinuations = false;
}
static void
usage (void)
{
fprintf (stderr,
"Usage: glcpp [OPTIONS] [--] [<filename>]\n"
"\n"
"Pre-process the given filename (stdin if no filename given).\n"
"The following options are supported:\n"
" --disable-line-continuations Do not interpret lines ending with a\n"
" backslash ('\\') as a line continuation.\n");
}
enum {
DISABLE_LINE_CONTINUATIONS_OPT = CHAR_MAX + 1
};
const static struct option
long_options[] = {
{"disable-line-continuations", no_argument, 0, DISABLE_LINE_CONTINUATIONS_OPT },
{0, 0, 0, 0 }
};
int
main (int argc, char *argv[])
{
@ -111,11 +136,28 @@ main (int argc, char *argv[])
const char *shader;
int ret;
struct gl_context gl_ctx;
int c;
init_fake_gl_context (&gl_ctx);
if (argc) {
filename = argv[1];
while ((c = getopt_long(argc, argv, "", long_options, NULL)) != -1) {
switch (c) {
case DISABLE_LINE_CONTINUATIONS_OPT:
gl_ctx.Const.DisableGLSLLineContinuations = true;
break;
default:
usage ();
exit (1);
}
}
if (optind + 1 < argc) {
printf ("Unexpected argument: %s\n", argv[optind+1]);
usage ();
exit (1);
}
if (optind < argc) {
filename = argv[optind];
}
shader = load_text_file (ctx, filename);