0,0 → 1,179 |
/* |
* Copyright © 2010 Intel Corporation |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the "Software"), |
* to deal in the Software without restriction, including without limitation |
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
* and/or sell copies of the Software, and to permit persons to whom the |
* Software is furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice (including the next |
* paragraph) shall be included in all copies or substantial portions of the |
* Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
* DEALINGS IN THE SOFTWARE. |
*/ |
|
#include <stdio.h> |
#include <string.h> |
#include <errno.h> |
#include <getopt.h> |
|
#include "glcpp.h" |
#include "main/mtypes.h" |
#include "main/shaderobj.h" |
|
extern int glcpp_parser_debug; |
|
void |
_mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr, |
struct gl_shader *sh) |
{ |
(void) ctx; |
*ptr = sh; |
} |
|
/* Read from fp until EOF and return a string of everything read. |
*/ |
static char * |
load_text_fp (void *ctx, FILE *fp) |
{ |
#define CHUNK 4096 |
char *text = NULL; |
size_t text_size = 0; |
size_t total_read = 0; |
size_t bytes; |
|
while (1) { |
if (total_read + CHUNK + 1 > text_size) { |
text_size = text_size ? text_size * 2 : CHUNK + 1; |
text = reralloc_size (ctx, text, text_size); |
if (text == NULL) { |
fprintf (stderr, "Out of memory\n"); |
return NULL; |
} |
} |
bytes = fread (text + total_read, 1, CHUNK, fp); |
total_read += bytes; |
|
if (bytes < CHUNK) { |
break; |
} |
} |
|
text[total_read] = '\0'; |
|
return text; |
} |
|
static char * |
load_text_file(void *ctx, const char *filename) |
{ |
char *text; |
FILE *fp; |
|
if (filename == NULL || strcmp (filename, "-") == 0) |
return load_text_fp (ctx, stdin); |
|
fp = fopen (filename, "r"); |
if (fp == NULL) { |
fprintf (stderr, "Failed to open file %s: %s\n", |
filename, strerror (errno)); |
return NULL; |
} |
|
text = load_text_fp (ctx, fp); |
|
fclose(fp); |
|
return text; |
} |
|
/* Initialize only those things that glcpp cares about. |
*/ |
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 |
}; |
|
static const struct option |
long_options[] = { |
{"disable-line-continuations", no_argument, 0, DISABLE_LINE_CONTINUATIONS_OPT }, |
{"debug", no_argument, 0, 'd'}, |
{0, 0, 0, 0 } |
}; |
|
int |
main (int argc, char *argv[]) |
{ |
char *filename = NULL; |
void *ctx = ralloc(NULL, void*); |
char *info_log = ralloc_strdup(ctx, ""); |
const char *shader; |
int ret; |
struct gl_context gl_ctx; |
int c; |
|
init_fake_gl_context (&gl_ctx); |
|
while ((c = getopt_long(argc, argv, "d", long_options, NULL)) != -1) { |
switch (c) { |
case DISABLE_LINE_CONTINUATIONS_OPT: |
gl_ctx.Const.DisableGLSLLineContinuations = true; |
break; |
case 'd': |
glcpp_parser_debug = 1; |
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); |
if (shader == NULL) |
return 1; |
|
ret = glcpp_preprocess(ctx, &shader, &info_log, NULL, &gl_ctx); |
|
printf("%s", shader); |
fprintf(stderr, "%s", info_log); |
|
ralloc_free(ctx); |
|
return ret; |
} |