186e2634bf
This prevents the two code paths from getting out of sync. Also, future work will need the shader source as a string anyway. Unfortunately, this copies and pastes load_text_file from main.cpp, with small changes (support for reading from stdin, talloc).
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
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* Copyright © 2010 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "glcpp.h"
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extern int yydebug;
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static char *
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load_text_file(void *ctx, const char *file_name)
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{
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char *text = NULL;
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struct stat st;
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ssize_t total_read = 0;
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int fd = file_name == NULL ? STDIN_FILENO : open(file_name, O_RDONLY);
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if (fd < 0) {
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return NULL;
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}
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if (fstat(fd, & st) == 0) {
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text = (char *) talloc_size(ctx, st.st_size + 1);
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if (text != NULL) {
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do {
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ssize_t bytes = read(fd, text + total_read,
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st.st_size - total_read);
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if (bytes < 0) {
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text = NULL;
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break;
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}
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if (bytes == 0) {
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break;
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}
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total_read += bytes;
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} while (total_read < st.st_size);
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text[total_read] = '\0';
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}
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}
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close(fd);
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return text;
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}
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int
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preprocess(void *talloc_ctx, const char **shader, char **info_log);
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int
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main (void)
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{
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void *ctx = talloc(NULL, void*);
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const char *shader = load_text_file(ctx, NULL);
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char *info_log = talloc_strdup(ctx, "");
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int ret = preprocess(ctx, &shader, &info_log);
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printf("%s", shader);
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fprintf(stderr, "%s", info_log);
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talloc_free(ctx);
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return ret;
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}
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