| author | Ryan C. Gordon <icculus@icculus.org> |
| Wed, 18 Feb 2009 21:35:37 -0500 | |
| changeset 659 | e77acde263cc |
| parent 588 | ef3d2efa822d |
| child 660 | d82a22c8ab3d |
| permissions | -rw-r--r-- |
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Initial work on preprocessor. Not yet complete!
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/** |
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* MojoShader; generate shader programs from bytecode of compiled |
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* Direct3D shaders. |
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* |
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* Please see the file LICENSE.txt in the source's root directory. |
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* |
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* This file written by Ryan C. Gordon. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "mojoshader.h" |
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static int preprocess(const char *fname, const char *buf, int len, |
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const char *outfile, |
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const MOJOSHADER_preprocessorDefine *defs, |
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unsigned int defcount) |
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{
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FILE *io = outfile ? fopen(outfile, "wb") : stdout; |
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if (io == NULL) |
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{
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printf(" ... fopen('%s') failed.\n", outfile);
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return 0; |
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} // if |
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const MOJOSHADER_preprocessData *pd; |
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int retval = 0; |
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pd = MOJOSHADER_preprocess(fname, buf, len, defs, defcount, NULL, |
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NULL, NULL, NULL, NULL); |
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if (pd->error_count > 0) |
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{
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int i; |
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for (i = 0; i < pd->error_count; i++) |
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{
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Report filenames in error messages.
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printf("%s:%d: ERROR: %s\n",
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pd->errors[i].filename ? pd->errors[i].filename : "???", |
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pd->errors[i].error_position, |
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pd->errors[i].error); |
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} // for |
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} // if |
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else |
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{
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if (pd->output != NULL) |
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{
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if (fwrite(pd->output, pd->output_len, 1, io) != 1) |
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printf(" ... fwrite('%s') failed.\n", outfile);
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else if ((outfile != NULL) && (fclose(io) == EOF)) |
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printf(" ... fclose('%s') failed.\n", outfile);
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else |
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retval = 1; |
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} // if |
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} // else |
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MOJOSHADER_freePreprocessData(pd); |
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return retval; |
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} // preprocess |
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int main(int argc, char **argv) |
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{
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int retval = 1; |
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const char *infile = NULL; |
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const char *outfile = NULL; |
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int i; |
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MOJOSHADER_preprocessorDefine *defs = NULL; |
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unsigned int defcount = 0; |
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for (i = 1; i < argc; i++) |
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{
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const char *arg = argv[i]; |
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if (strcmp(arg, "-o") == 0) |
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{
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if (outfile != NULL) |
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{
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printf("multiple output files specified.\n");
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exit(1); |
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} // if |
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arg = argv[++i]; |
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if (arg == NULL) |
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{
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printf("no filename after '-o'\n");
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exit(1); |
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} // if |
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outfile = arg; |
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} // if |
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else if (strncmp(arg, "-D", 2) == 0) |
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{
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arg += 2; |
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char *ident = strdup(arg); |
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char *ptr = strchr(ident, '='); |
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const char *val = ""; |
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if (ptr) |
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{
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*ptr = '\0'; |
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val = ptr+1; |
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} // if |
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defs = (MOJOSHADER_preprocessorDefine *) realloc(defs, |
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(defcount+1) * sizeof (MOJOSHADER_preprocessorDefine)); |
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defs[defcount].identifier = ident; |
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defs[defcount].definition = val; |
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defcount++; |
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} // else if |
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else |
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{
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if (infile != NULL) |
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{
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printf("multiple input files specified.\n");
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exit(1); |
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} // if |
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infile = arg; |
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} // else |
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} // for |
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if (infile == NULL) |
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{
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printf("no input file specified.\n");
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exit(1); |
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} // if |
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128 |
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FILE *io = fopen(infile, "rb"); |
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if (io == NULL) |
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printf(" ... fopen('%s') failed.\n", infile);
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else |
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{
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char *buf = (char *) malloc(1000000); |
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int rc = fread(buf, 1, 1000000, io); |
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fclose(io); |
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if (rc == EOF) |
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printf(" ... fread('%s') failed.\n", infile);
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else |
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{
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if (preprocess(infile, buf, rc, outfile, defs, defcount)) |
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retval = 0; |
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else |
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{
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if (outfile != NULL) |
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remove(outfile); |
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} // else |
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free(buf); |
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} // else |
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} // else |
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151 |
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for (i = 0; i < defcount; i++) |
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free((void *) defs[defcount].identifier); |
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free(defs); |
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return retval; |
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} // main |
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// end of preprocess.c ... |
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160 |