2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
30 #include "main/shaderobj.h"
31 #include "util/strtod.h"
33 extern int glcpp_parser_debug;
36 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
43 /* Read from fp until EOF and return a string of everything read.
46 load_text_fp (void *ctx, FILE *fp)
51 size_t total_read = 0;
55 if (total_read + CHUNK + 1 > text_size) {
56 text_size = text_size ? text_size * 2 : CHUNK + 1;
57 text = reralloc_size (ctx, text, text_size);
59 fprintf (stderr, "Out of memory\n");
63 bytes = fread (text + total_read, 1, CHUNK, fp);
71 text[total_read] = '\0';
77 load_text_file(void *ctx, const char *filename)
82 if (filename == NULL || strcmp (filename, "-") == 0)
83 return load_text_fp (ctx, stdin);
85 fp = fopen (filename, "r");
87 fprintf (stderr, "Failed to open file %s: %s\n",
88 filename, strerror (errno));
92 text = load_text_fp (ctx, fp);
99 /* Initialize only those things that glcpp cares about.
102 init_fake_gl_context (struct gl_context *gl_ctx)
104 gl_ctx->API = API_OPENGL_COMPAT;
105 gl_ctx->Const.DisableGLSLLineContinuations = false;
112 "Usage: glcpp [OPTIONS] [--] [<filename>]\n"
114 "Pre-process the given filename (stdin if no filename given).\n"
115 "The following options are supported:\n"
116 " --disable-line-continuations Do not interpret lines ending with a\n"
117 " backslash ('\\') as a line continuation.\n");
121 DISABLE_LINE_CONTINUATIONS_OPT = CHAR_MAX + 1
124 static const struct option
126 {"disable-line-continuations", no_argument, 0, DISABLE_LINE_CONTINUATIONS_OPT },
127 {"debug", no_argument, 0, 'd'},
132 main (int argc, char *argv[])
134 char *filename = NULL;
135 void *ctx = ralloc(NULL, void*);
136 char *info_log = ralloc_strdup(ctx, "");
139 struct gl_context gl_ctx;
142 init_fake_gl_context (&gl_ctx);
144 while ((c = getopt_long(argc, argv, "d", long_options, NULL)) != -1) {
146 case DISABLE_LINE_CONTINUATIONS_OPT:
147 gl_ctx.Const.DisableGLSLLineContinuations = true;
150 glcpp_parser_debug = 1;
158 if (optind + 1 < argc) {
159 printf ("Unexpected argument: %s\n", argv[optind+1]);
164 filename = argv[optind];
167 shader = load_text_file (ctx, filename);
173 ret = glcpp_preprocess(ctx, &shader, &info_log, NULL, NULL, &gl_ctx);
175 printf("%s", shader);
176 fprintf(stderr, "%s", info_log);