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it's still recursive but it's honest work

v1
Brett 2023-11-13 15:32:39 -05:00
parent 3d7abd2765
commit 5472783bd7
2 changed files with 52 additions and 63 deletions
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10
include/blt/std/loader.h
View File

@ -24,6 +24,8 @@ namespace blt::fs
char close = '>';
};
std::string getFile(const std::string& path);
std::vector<std::string> getLinesFromFile(const std::string& path);
/**
@ -40,7 +42,13 @@ namespace blt::fs
{
std::string buffer;
auto lines = recursiveInclude(path, "~");
auto lines = recursiveInclude(path, "~", {});
for (auto& line : lines)
{
buffer += line;
buffer += '\n';
}
return buffer;
}

103
src/blt/std/loader.cpp
View File

@ -8,32 +8,9 @@
std::vector<std::string> blt::fs::getLinesFromFile(const std::string& path)
{
std::string shaderSource;
std::ifstream shaderFile;
if (!shaderFile.good())
BLT_ERROR("Input stream not good!\n");
// ensure ifstream objects can throw exceptions:
shaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
try
{
// open file
shaderFile.open(path);
std::stringstream shaderStream;
// read file's buffer contents into streams
shaderStream << shaderFile.rdbuf();
// close file handlers
shaderFile.close();
// convert stream into std::string
shaderSource = shaderStream.str();
} catch (std::ifstream::failure& e)
{
BLT_WARN("Unable to read file '%s'!\n", path.c_str());
BLT_WARN("Exception: %s", e.what());
throw std::runtime_error("Failed to read file!\n");
}
// split the shader into the lines, this way we can get out the #include statements.
return string::split(shaderSource, "\n");
std::string file = getFile(path);
// split the file into the lines, this way we can get out the #include statements.
return string::split(file, "\n");
}
std::vector<std::string> blt::fs::recursiveInclude(const std::string& path, const std::string& include_header,
@ -51,59 +28,63 @@ std::vector<std::string> blt::fs::recursiveInclude(const std::string& path, cons
if (include_pos != std::string::npos)
{
auto past_include = include_pos + include_header.size();
BLT_TRACE(past_include);
BLT_TRACE("%c", (char)line[past_include]);
std::string file_to_include;
if (guards.empty())
{
file_to_include = line.substr(line.find(include_header));
file_to_include = line.substr(past_include);
} else
{
size_t index = past_include;
while (std::find_if(guards.begin(), guards.end(), [&](const include_guard& item) {
return line[index] == item.open;
return index < line.size() && line[index] == item.open;
}) == guards.end())
index++;
index++;
BLT_ASSERT(index < line.size() && "Include found but no file was provided!");
std::cout << line.substr(index) << std::endl;
while (std::find_if(guards.begin(), guards.end(), [&](const include_guard& item) {
return index < line.size() && line[index] == item.close;
}) == guards.end())
file_to_include += line[index++];
}
// ignore absolute paths TODO: path lib
//if (!blt::string::starts_with(blt::string::trim(file_to_include), '/'))
// size_t index = 0;
//
// std::vector<std::string> include_statement = string::split(line, "<");
//
// if (include_statement.size() <= 1)
// include_statement = string::split(line, "\"");
//
// string::trim(line);
// if (!(string::ends_with(line, ">") || string::ends_with(line, "\"")))
// {
// BLT_FATAL("Shader file contains an invalid #include statement. (Missing terminator)\n");
// std::abort();
// }
// try
// {
// // filter out the > or " at the end of the include statement.
// std::string file;
// file = include_statement[1];
// if (string::ends_with(include_statement[1], ">"))
// file = file.substr(0, file.size() - 1);
//
// BLT_TRACE("Recusing into %s/%s\n", pathOnly.c_str(), file.c_str());
//
// includes.insert({i, recursiveInclude(pathOnly + "/" + file, include_header, guards)});
// } catch (std::exception& e)
// {
// BLT_FATAL("Shader file contains an invalid #include statement. (Missing < or \")\n");
// BLT_FATAL("Exception: %s", e.what());
// std::abort();
// }
auto lines = recursiveInclude(file_to_include, include_header, guards);
for (const auto& i_line : lines)
return_lines.push_back(i_line);
} else
return_lines.push_back(line);
}
return return_lines;
}
std::string blt::fs::getFile(const std::string& path)
{
std::string file_contents;
std::ifstream the_file;
if (!the_file.good())
BLT_ERROR("Input stream not good!\n");
// ensure ifstream objects can throw exceptions:
the_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
try
{
// open file
the_file.open(path);
std::stringstream file_stream;
// read file's buffer contents into streams
file_stream << the_file.rdbuf();
// close file handlers
the_file.close();
// convert stream into std::string
file_contents = file_stream.str();
} catch (std::ifstream::failure& e)
{
BLT_WARN("Unable to read file '%s'!\n", path.c_str());
BLT_WARN("Exception: %s", e.what());
throw std::runtime_error("Failed to read file!\n");
}
return file_contents;
}