diff options
Diffstat (limited to 'src/glsl/glcpp/glcpp.c')
-rw-r--r-- | src/glsl/glcpp/glcpp.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/glsl/glcpp/glcpp.c b/src/glsl/glcpp/glcpp.c new file mode 100644 index 00000000000..cc87e14950b --- /dev/null +++ b/src/glsl/glcpp/glcpp.c @@ -0,0 +1,88 @@ +/* + * 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 <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include "glcpp.h" + +extern int yydebug; + +static char * +load_text_file(void *ctx, const char *file_name) +{ + char *text = NULL; + struct stat st; + ssize_t total_read = 0; + int fd = file_name == NULL ? STDIN_FILENO : open(file_name, O_RDONLY); + + if (fd < 0) { + return NULL; + } + + if (fstat(fd, & st) == 0) { + text = (char *) talloc_size(ctx, st.st_size + 1); + if (text != NULL) { + do { + ssize_t bytes = read(fd, text + total_read, + st.st_size - total_read); + if (bytes < 0) { + text = NULL; + break; + } + + if (bytes == 0) { + break; + } + + total_read += bytes; + } while (total_read < st.st_size); + + text[total_read] = '\0'; + } + } + + close(fd); + + return text; +} + +int +preprocess(void *talloc_ctx, const char **shader, char **info_log); + +int +main (void) +{ + void *ctx = talloc(NULL, void*); + const char *shader = load_text_file(ctx, NULL); + char *info_log = talloc_strdup(ctx, ""); + int ret = preprocess(ctx, &shader, &info_log); + + printf("%s", shader); + fprintf(stderr, "%s", info_log); + + talloc_free(ctx); + + return ret; +} |