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/*
* 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 <string.h>
#include <errno.h>
#include "glcpp.h"
extern int yydebug;
/* Read from fd until EOF and return a string of everything read.
*/
static char *
load_text_fd (void *ctx, int fd)
{
#define CHUNK 4096
char *text = NULL;
ssize_t text_size = 0;
ssize_t total_read = 0;
ssize_t bytes;
while (1) {
if (total_read + CHUNK + 1 > text_size) {
text_size = text_size ? text_size * 2 : CHUNK + 1;
text = talloc_realloc_size (ctx, text, text_size);
if (text == NULL) {
fprintf (stderr, "Out of memory\n");
return NULL;
}
}
bytes = read (fd, text + total_read, CHUNK);
if (bytes < 0) {
fprintf (stderr, "Error while reading: %s\n",
strerror (errno));
talloc_free (text);
return NULL;
}
if (bytes == 0) {
break;
}
total_read += bytes;
}
text[total_read] = '\0';
return text;
}
static char *
load_text_file(void *ctx, const char *filename)
{
char *text;
int fd;
if (filename == NULL || strcmp (filename, "-") == 0)
return load_text_fd (ctx, STDIN_FILENO);
fd = open (filename, O_RDONLY);
if (fd < 0) {
fprintf (stderr, "Failed to open file %s: %s\n",
filename, strerror (errno));
return NULL;
}
text = load_text_fd (ctx, fd);
close(fd);
return text;
}
int
main (int argc, char *argv[])
{
char *filename = NULL;
void *ctx = talloc(NULL, void*);
char *info_log = talloc_strdup(ctx, "");
const char *shader;
int ret;
if (argc) {
filename = argv[1];
}
shader = load_text_file (ctx, filename);
if (shader == NULL)
return 1;
ret = preprocess(ctx, &shader, &info_log, NULL);
printf("%s", shader);
fprintf(stderr, "%s", info_log);
talloc_free(ctx);
return ret;
}
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