1 /*
2 * Copyright © 2010 Intel Corporation
3 *
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:
10 *
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
13 * Software.
14 *
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.
22 */
23
24 #include <stdio.h>
25 #include <string.h>
26 #include <errno.h>
27 #include "glcpp.h"
28 #include "main/mtypes.h"
29 #include "main/shaderobj.h"
30
31 extern int yydebug;
32
33 void
_mesa_reference_shader(struct gl_context * ctx,struct gl_shader ** ptr,struct gl_shader * sh)34 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
35 struct gl_shader *sh)
36 {
37 (void) ctx;
38 *ptr = sh;
39 }
40
41 /* Read from fp until EOF and return a string of everything read.
42 */
43 static char *
load_text_fp(void * ctx,FILE * fp)44 load_text_fp (void *ctx, FILE *fp)
45 {
46 #define CHUNK 4096
47 char *text = NULL;
48 size_t text_size = 0;
49 size_t total_read = 0;
50 size_t bytes;
51
52 while (1) {
53 if (total_read + CHUNK + 1 > text_size) {
54 text_size = text_size ? text_size * 2 : CHUNK + 1;
55 text = reralloc_size (ctx, text, text_size);
56 if (text == NULL) {
57 fprintf (stderr, "Out of memory\n");
58 return NULL;
59 }
60 }
61 bytes = fread (text + total_read, 1, CHUNK, fp);
62 total_read += bytes;
63
64 if (bytes < CHUNK) {
65 break;
66 }
67 }
68
69 text[total_read] = '\0';
70
71 return text;
72 }
73
74 static char *
load_text_file(void * ctx,const char * filename)75 load_text_file(void *ctx, const char *filename)
76 {
77 char *text;
78 FILE *fp;
79
80 if (filename == NULL || strcmp (filename, "-") == 0)
81 return load_text_fp (ctx, stdin);
82
83 fp = fopen (filename, "r");
84 if (fp == NULL) {
85 fprintf (stderr, "Failed to open file %s: %s\n",
86 filename, strerror (errno));
87 return NULL;
88 }
89
90 text = load_text_fp (ctx, fp);
91
92 fclose(fp);
93
94 return text;
95 }
96
97 int
main(int argc,char * argv[])98 main (int argc, char *argv[])
99 {
100 char *filename = NULL;
101 void *ctx = ralloc(NULL, void*);
102 char *info_log = ralloc_strdup(ctx, "");
103 const char *shader;
104 int ret;
105
106 if (argc) {
107 filename = argv[1];
108 }
109
110 shader = load_text_file (ctx, filename);
111 if (shader == NULL)
112 return 1;
113
114 ret = glcpp_preprocess(ctx, &shader, &info_log, NULL, API_OPENGL);
115
116 printf("%s", shader);
117 fprintf(stderr, "%s", info_log);
118
119 ralloc_free(ctx);
120
121 return ret;
122 }
123