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fix assert, working on loading

v1
Brett 2023-11-13 15:15:27 -05:00
parent 19baf8b048
commit 3d7abd2765
3 changed files with 100 additions and 50 deletions
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37
include/blt/std/loader.h
View File

@ -14,18 +14,45 @@
#include <string> #include <string>
#include <blt/std/string.h> #include <blt/std/string.h>
#include <blt/std/logging.h> #include <blt/std/logging.h>
#include <unordered_set>
namespace blt::fs
{
struct include_guard
{
char open = '<';
char close = '>';
};
namespace blt::fs {
std::vector<std::string> getLinesFromFile(const std::string& path); std::vector<std::string> getLinesFromFile(const std::string& path);
std::vector<std::string> recursiveShaderInclude(const std::string& path, const std::string& include_header = "#include"); /**
* Recursively include files
* @param path initial file to load
* @param include_header the beginning of the line that should be used to recognize when a line is to be treated as an include
* @param guards characters used to identify the parts that specify the file path. if empty it will assume everything after the include header
* @return a list of lines in all files. added together in order.
*/
std::vector<std::string> recursiveInclude(const std::string& path, const std::string& include_header = "#include",
const std::vector<include_guard>& guards = {{'<', '>'}, {'"', '"'}});
static inline std::string loadShaderFile(const std::string& path) { static inline std::string loadBrainFuckFile(const std::string& path)
{
std::string buffer;
auto lines = recursiveInclude(path, "~");
return buffer;
}
static inline std::string loadShaderFile(const std::string& path)
{
std::stringstream stringStream; std::stringstream stringStream;
auto lines = recursiveShaderInclude(path); auto lines = recursiveInclude(path);
for (const auto& line : lines) { for (const auto& line : lines)
{
// now process the defines, if they exist // now process the defines, if they exist
// if (line.starts_with("#define")) { // if (line.starts_with("#define")) {
// auto defineParts = String::split(line, " "); // auto defineParts = String::split(line, " ");

115
src/blt/std/loader.cpp
View File

@ -4,15 +4,18 @@
* See LICENSE file for license detail * See LICENSE file for license detail
*/ */
#include <blt/std/loader.h> #include <blt/std/loader.h>
#include <blt/std/assert.h>
std::vector<std::string> blt::fs::getLinesFromFile(const std::string& path) { std::vector<std::string> blt::fs::getLinesFromFile(const std::string& path)
{
std::string shaderSource; std::string shaderSource;
std::ifstream shaderFile; std::ifstream shaderFile;
if (!shaderFile.good()) if (!shaderFile.good())
BLT_ERROR("Input stream not good!\n"); BLT_ERROR("Input stream not good!\n");
// ensure ifstream objects can throw exceptions: // ensure ifstream objects can throw exceptions:
shaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit); shaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
try { try
{
// open file // open file
shaderFile.open(path); shaderFile.open(path);
std::stringstream shaderStream; std::stringstream shaderStream;
@ -22,7 +25,8 @@ std::vector<std::string> blt::fs::getLinesFromFile(const std::string& path) {
shaderFile.close(); shaderFile.close();
// convert stream into std::string // convert stream into std::string
shaderSource = shaderStream.str(); shaderSource = shaderStream.str();
} catch (std::ifstream::failure& e) { } catch (std::ifstream::failure& e)
{
BLT_WARN("Unable to read file '%s'!\n", path.c_str()); BLT_WARN("Unable to read file '%s'!\n", path.c_str());
BLT_WARN("Exception: %s", e.what()); BLT_WARN("Exception: %s", e.what());
throw std::runtime_error("Failed to read file!\n"); throw std::runtime_error("Failed to read file!\n");
@ -32,55 +36,74 @@ std::vector<std::string> blt::fs::getLinesFromFile(const std::string& path) {
return string::split(shaderSource, "\n"); return string::split(shaderSource, "\n");
} }
std::vector<std::string> blt::fs::recursiveShaderInclude(const std::string& path, const std::string& include_header) { std::vector<std::string> blt::fs::recursiveInclude(const std::string& path, const std::string& include_header,
const std::vector<include_guard>& guards)
{
std::string pathOnly = path.substr(0, path.find_last_of('/')); std::string pathOnly = path.substr(0, path.find_last_of('/'));
auto mainLines = getLinesFromFile(path); auto mainLines = getLinesFromFile(path);
std::unordered_map<int, std::vector<std::string>> includes; std::vector<std::string> return_lines;
for (unsigned int i = 0; i < mainLines.size(); i++) { for (auto& line : mainLines)
auto& line = mainLines[i]; {
// if the line is an include statement then we want to add lines recursively. // if the line is an include statement then we want to add lines recursively.
if (string::starts_with(line, include_header)) { auto include_pos = line.find(include_header);
std::vector<std::string> include_statement = string::split(line, "<"); 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 (include_statement.size() <= 1) if (guards.empty())
include_statement = string::split(line, "\""); {
file_to_include = line.substr(line.find(include_header));
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, recursiveShaderInclude(pathOnly + "/" + file, include_header)});
} catch (std::exception& e) {
BLT_FATAL("Shader file contains an invalid #include statement. (Missing < or \")\n");
BLT_FATAL("Exception: %s", e.what());
std::abort();
}
}
}
std::vector<std::string> returnLines;
// now combine all the loaded files while respecting the include's position in the file.
for (unsigned int i = 0; i < mainLines.size(); i++) {
if (!includes[i].empty()) {
auto includedFileLines = includes[i];
for (const auto& line : includedFileLines)
returnLines.push_back(line);
} else } else
returnLines.push_back(mainLines[i]); {
size_t index = past_include;
while (std::find_if(guards.begin(), guards.end(), [&](const include_guard& item) {
return 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;
} }
return returnLines;
// 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();
// }
} else
return_lines.push_back(line);
}
return return_lines;
} }