diff options
| -rw-r--r-- | glcpp/glcpp.c | 62 | ||||
| -rw-r--r-- | glcpp/glcpp.h | 3 |
2 files changed, 56 insertions, 9 deletions
diff --git a/glcpp/glcpp.c b/glcpp/glcpp.c index 8ba4661..cc87e14 100644 --- a/glcpp/glcpp.c +++ b/glcpp/glcpp.c @@ -21,24 +21,68 @@ * DEALINGS IN THE SOFTWARE. */ +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> #include "glcpp.h" extern int yydebug; -int -main (void) +static char * +load_text_file(void *ctx, const char *file_name) { - glcpp_parser_t *parser; - int ret; + 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'; + } + } - parser = glcpp_parser_create (); + close(fd); - ret = glcpp_parser_parse (parser); + 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", parser->output); - fprintf(stderr, "%s", parser->info_log); + printf("%s", shader); + fprintf(stderr, "%s", info_log); - glcpp_parser_destroy (parser); + talloc_free(ctx); return ret; } diff --git a/glcpp/glcpp.h b/glcpp/glcpp.h index bb0ac95..2cfa98d 100644 --- a/glcpp/glcpp.h +++ b/glcpp/glcpp.h @@ -167,6 +167,9 @@ glcpp_parser_parse (glcpp_parser_t *parser); void glcpp_parser_destroy (glcpp_parser_t *parser); +int +preprocess(void *talloc_ctx, const char **shader, char **info_log); + /* Functions for writing to the info log */ void |