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// ----------------------------------------------------------------------------
// - Open3D: www.open3d.org -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.open3d.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
#include <cstdio>
#include <string>
std::string MakeString(const std::string &line) {
std::string str;
for (size_t i = 0; i < line.size(); ++i) {
char c = line[i];
if (c == '"') {
str += "\\\"";
} else if (c == '\\') {
str += "\\\\";
} else {
str += c;
}
}
size_t r_pos = str.find('\r');
if (r_pos != std::string::npos) {
str = str.substr(0, r_pos);
}
size_t n_pos = str.find('\n');
if (n_pos != std::string::npos) {
str = str.substr(0, n_pos);
}
return str;
}
int main(int argc, char **argv) {
if (argc != 3) {
printf("ShaderEncoder:\n"
"Unexpected number of arguments %d\n"
"Expected usage \"ShaderEncoder <output> <input>\"\n",
argc);
return 1;
}
FILE *file_out = fopen(argv[1], "w");
if (file_out == nullptr) {
printf("ShaderEncoder:\n"
"Cannot open file %s\n",
argv[1]);
return 1;
}
FILE *file_in = fopen(argv[2], "r");
if (file_in == nullptr) {
printf("ShaderEncoder:\n"
"Cannot open file %s\n",
argv[2]);
fclose(file_out);
return 1;
}
const std::string file_in_name(argv[2]);
size_t dot_pos = file_in_name.find_last_of(".");
if (dot_pos == std::string::npos || dot_pos == 0) {
printf("ShaderEncoder:\n"
"Illegal file extension");
fclose(file_in);
fclose(file_out);
return 1;
}
std::string filename = file_in_name.substr(0, dot_pos);
const size_t last_slash_idx = filename.find_last_of("\\/");
if (last_slash_idx != std::string::npos) {
filename = filename.substr(last_slash_idx + 1);
}
if (filename.empty()) {
printf("ShaderEncoder:\n"
"Illegal file name");
fclose(file_in);
fclose(file_out);
return 1;
}
fprintf(file_out, "// Automatically generated header file for shader.\n");
fprintf(file_out, "// See LICENSE.txt for full license statement.\n");
fprintf(file_out, "\n");
fprintf(file_out, "const char * const %s = \n", filename.c_str());
char buffer[1024];
while (fgets(buffer, sizeof(buffer), file_in)) {
std::string line = MakeString(std::string(buffer));
fprintf(file_out, "\"%s\\n\"\n", line.c_str());
}
fprintf(file_out, ";\n");
fclose(file_in);
fclose(file_out);
return 0;
}
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