92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/* RETRO ------------------------------------------------------
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A personal, minimalistic forth
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Copyright (c) 2016 - 2019 Charles Childers
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This loads an image file and generates a C formatted output
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suitable for being linked into the virtual machine. It's
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used to create the `image.c` that gets linked into `retro`.
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---------------------------------------------------------- */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdint.h>
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#ifndef BIT64
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#define CELL int32_t
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#define CELL_MIN INT_MIN + 1
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#define CELL_MAX INT_MAX - 1
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#else
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#define CELL int64_t
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#define CELL_MIN LLONG_MIN + 1
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#define CELL_MAX LLONG_MAX - 1
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#endif
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CELL memory[512*1024];
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CELL ngaLoadImage(char *imageFile) {
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FILE *fp;
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CELL imageSize;
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long fileLen;
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if ((fp = fopen(imageFile, "rb")) != NULL) {
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/* Determine length (in cells) */
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fseek(fp, 0, SEEK_END);
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fileLen = ftell(fp) / sizeof(CELL);
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rewind(fp);
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/* Read the file into memory */
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imageSize = fread(&memory, sizeof(CELL), fileLen, fp);
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fclose(fp);
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}
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else {
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printf("Unable to find the ngaImage!\n");
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exit(1);
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}
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return imageSize;
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}
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void output_header(int size) {
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printf("#include <stdint.h>\n");
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printf("#ifndef CELL\n");
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printf("#ifndef BIT64\n");
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printf("#define CELL int32_t\n");
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printf("#define CELL_MIN INT_MIN + 1\n");
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printf("#define CELL_MAX INT_MAX - 1\n");
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printf("#else\n");
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printf("#define CELL int64_t\n");
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printf("#define CELL_MIN LLONG_MIN + 1\n");
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printf("#define CELL_MAX LLONG_MAX - 1\n");
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printf("#endif\n");
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printf("#endif\n");
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printf("CELL ngaImageCells = %lld;\n", (long long)size);
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printf("CELL ngaImage[] = { ");
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}
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int main(int argc, char **argv) {
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int32_t size = 0;
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int32_t i;
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int32_t n;
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if (argc == 2)
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size = ngaLoadImage(argv[1]);
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else
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size = ngaLoadImage("ngaImage");
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output_header(size);
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i = 0;
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n = 0;
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while (i < size) {
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n++;
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if (n == 20) {
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printf("\n ");
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n = 0;
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}
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if (i+1 < size)
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printf("%lld,", (long long)memory[i]);
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else
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printf("%lld };\n", (long long)memory[i]);
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i++;
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}
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exit(0);
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}
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