Working on C based tooling

tools/display/texture_generation.c

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+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#if defined(_MSC_VER)
+  #include <direct.h>
+  #define getcwd _getcwd
+  #define FILE_PATH_SEP '\\'
+#elif defined(__GNUC__)
+  #include <unistd.h>
+  #define FILE_PATH_SEP '/'
+#endif
+
+#ifndef  STB_IMAGE_IMPLEMENTATION
+  #define STB_IMAGE_IMPLEMENTATION
+  #include <stb_image.h>
+#endif
+
+
+
+// void mkdirp(const char *dir) {
+//   char tmp[FILENAME_MAX + 1];
+//   char *p = NULL;
+//   size_t len;
+
+//   // Copy the input to the output
+//   snprintf(tmp, sizeof(tmp), "%s", dir);
+//   len = strlen(tmp);// Determine string length
+
+//   // Does the string end with a directory terminator?
+//   if(tmp[len - 1] == '/' || tmp[len - 1] == '\\') {
+//     tmp[len - 1] = 0;
+//   }
+
+//   // Foreach character, take the value from TMP as I go.
+//   for(p = tmp + 1; *p; p++) {
+//     if(*p == '/' || *p == '\\') {
+//       *p = 0;
+//       _mkdir(tmp);
+//       *p = '/';
+//     }
+//   }
+
+//   _mkdir(tmp);
+// }
+
+int main(int argc, char *argv[]) {
+  FILE *file;
+  char path[FILENAME_MAX + 1];
+  char *in;
+  char *out;
+  char pathSep;
+  int x, y, channels;
+  stbi_uc *data;
+
+  if(argc != 3) {
+    printf("Invalid number of arguments\n");
+    return 1;
+  }
+
+  pathSep = FILE_PATH_SEP;
+  in = argv[1];
+  out = argv[2];
+
+  // Normalize slashes
+  fileNormalizeSlashes(in);
+  fileNormalizeSlashes(out);
+
+  // Read in original texture
+  printf("Opening %s\n", in);
+  file = fopen(in, "rb");
+  if(file == NULL) {
+    printf("Failed to open file!\n");
+    return 1;
+  }
+  data = stbi_load_from_file(file, &x, &y, &channels, STBI_rgb_alpha);
+  if(data == NULL) {
+    printf("Failed to load input texture!\n");
+    return 1;
+  }
+
+  // Write out texture
+  path[0] = '\0';
+  if(getcwd(path,sizeof(path)) == NULL) {
+    printf("Failed to get current dir!\n");
+    stbi_image_free(data);
+    return 1;
+  }
+
+  // Determine Output path
+  strncat(path, &pathSep, 1);
+  strcat(path, out);
+  printf("Writing %s\n", path);
+
+  // Open output file
+  fileMkdirp(path);
+  file = fopen(path, "wb");
+  if(file == NULL) {
+    printf("Invalid file out!\n");
+    return 1;
+  }
+
+  // Write texture
+  printf("Size %i x %i @ %i\n", x, y, channels);
+  fwrite(data, sizeof(unsigned char), x*y*channels, file);
+
+  // Cleanup
+  fclose(file);
+  stbi_image_free(data);
+
+  return 0;
+}