mirror of
https://github.com/janet-lang/janet
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105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*
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* Copyright (c) 2019 Calvin Rose
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* 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 shall be included in
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* all copies or substantial portions of the 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 THE
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* 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 DEALINGS
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* IN THE SOFTWARE.
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*/
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/* Simple clone of the xxd tool used at build time. Used to
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* create headers out of source files. Only used for core libraries
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* like the bootstrapping code and the stl. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#define BUFSIZE 1024
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#define PERLINE 10
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int main(int argc, const char **argv) {
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static const char hex[] = "0123456789ABCDEF";
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char buf[BUFSIZE];
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size_t bytesRead = 0;
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int32_t totalRead = 0;
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int lineIndex = 0;
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int line = 0;
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if (argc != 4) {
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fprintf(stderr, "Usage: %s infile outfile symbol\n", argv[0]);
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return 1;
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}
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/* Open the files */
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FILE *in = fopen(argv[1], "rb");
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FILE *out = fopen(argv[2], "wb");
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/* Check if files open successfully */
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if (in == NULL) {
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fprintf(stderr, "Could not open input file %s\n", argv[1]);
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return 1;
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} else if (out == NULL) {
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fprintf(stderr, "Could not open output file %s\n", argv[2]);
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return 1;
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}
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/* Write the header */
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fprintf(out, "/* Auto generated - DO NOT EDIT */\n\n#include <stdint.h>\n\n");
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fprintf(out, "static const unsigned char bytes_%s[] = {", argv[3]);
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/* Read in chunks from buffer */
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while ((bytesRead = fread(buf, 1, sizeof(buf), in)) > 0) {
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size_t i;
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totalRead += bytesRead;
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for (i = 0; i < bytesRead; ++i) {
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int byte = ((uint8_t *)buf) [i];
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/* Write the byte */
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if (lineIndex++ == 0) {
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if (line++)
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fputc(',', out);
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fputs("\n ", out);
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} else {
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fputs(", ", out);
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}
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fputs("0x", out);
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fputc(hex[byte >> 4], out);
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fputc(hex[byte & 0xF], out);
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/* Make line index wrap */
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if (lineIndex >= PERLINE)
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lineIndex = 0;
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}
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}
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/* Write the tail */
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fputs("\n};\n\n", out);
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fprintf(out, "const unsigned char *%s = bytes_%s;\n\n", argv[3], argv[3]);
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/* Write chunk size */
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fprintf(out, "int32_t %s_size = %d;\n", argv[3], totalRead);
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/* Close the file handles */
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fclose(in);
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fclose(out);
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return 0;
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}
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