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176 lines (164 loc) · 5.82 KB
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/*
* simplecpp - A simple and high-fidelity C/C++ preprocessor library
* Copyright (C) 2016-2023 simplecpp team
*/
#include "simplecpp.h"
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <iostream>
#include <map>
#include <string>
#include <vector>
int main(int argc, char **argv)
{
bool error = false;
const char *filename = nullptr;
bool use_istream = false;
// Settings..
simplecpp::DUI dui;
bool quiet = false;
bool error_only = false;
for (int i = 1; i < argc; i++) {
const char * const arg = argv[i];
if (*arg == '-') {
bool found = false;
const char c = arg[1];
switch (c) {
case 'D': { // define symbol
const char * const value = arg[2] ? (argv[i] + 2) : argv[++i];
dui.defines.push_back(value);
found = true;
break;
}
case 'U': { // undefine symbol
const char * const value = arg[2] ? (argv[i] + 2) : argv[++i];
dui.undefined.insert(value);
found = true;
break;
}
case 'I': { // include path
const char * const value = arg[2] ? (argv[i] + 2) : argv[++i];
dui.includePaths.push_back(value);
found = true;
break;
}
case 'i':
if (std::strncmp(arg, "-include=",9)==0) {
dui.includes.push_back(arg+9);
found = true;
} else if (std::strncmp(arg, "-is",3)==0) {
use_istream = true;
found = true;
}
break;
case 's':
if (std::strncmp(arg, "-std=",5)==0) {
dui.std = arg + 5;
found = true;
}
break;
case 'q':
quiet = true;
found = true;
break;
case 'e':
error_only = true;
found = true;
break;
}
if (!found) {
std::cout << "error: option '" << arg << "' is unknown." << std::endl;
error = true;
}
} else if (filename) {
std::cout << "error: multiple filenames specified" << std::endl;
std::exit(1);
} else {
filename = arg;
}
}
if (error)
std::exit(1);
if (quiet && error_only) {
std::cout << "error: -e cannot be used in conjunction with -q" << std::endl;
std::exit(1);
}
if (!filename) {
std::cout << "Syntax:" << std::endl;
std::cout << "simplecpp [options] filename" << std::endl;
std::cout << " -DNAME Define NAME." << std::endl;
std::cout << " -IPATH Include path." << std::endl;
std::cout << " -include=FILE Include FILE." << std::endl;
std::cout << " -UNAME Undefine NAME." << std::endl;
std::cout << " -std=STD Specify standard." << std::endl;
std::cout << " -q Quiet mode (no output)." << std::endl;
std::cout << " -is Use std::istream interface." << std::endl;
std::cout << " -e Output errors only." << std::endl;
std::exit(0);
}
dui.removeComments = true;
// Perform preprocessing
simplecpp::OutputList outputList;
std::vector<std::string> files;
simplecpp::TokenList *rawtokens;
if (use_istream) {
std::ifstream f(filename);
if (!f.is_open()) {
std::cout << "error: could not open file '" << filename << "'" << std::endl;
std::exit(1);
}
rawtokens = new simplecpp::TokenList(f, files,filename,&outputList);
} else {
rawtokens = new simplecpp::TokenList(filename,files,&outputList);
}
rawtokens->removeComments();
simplecpp::TokenList outputTokens(files);
std::map<std::string, simplecpp::TokenList*> filedata;
simplecpp::preprocess(outputTokens, *rawtokens, files, filedata, dui, &outputList);
simplecpp::cleanup(filedata);
delete rawtokens;
rawtokens = nullptr;
// Output
if (!quiet) {
if (!error_only)
std::cout << outputTokens.stringify() << std::endl;
for (const simplecpp::Output &output : outputList) {
std::cerr << output.location.file() << ':' << output.location.line << ": ";
switch (output.type) {
case simplecpp::Output::ERROR:
std::cerr << "#error: ";
break;
case simplecpp::Output::WARNING:
std::cerr << "#warning: ";
break;
case simplecpp::Output::MISSING_HEADER:
std::cerr << "missing header: ";
break;
case simplecpp::Output::INCLUDE_NESTED_TOO_DEEPLY:
std::cerr << "include nested too deeply: ";
break;
case simplecpp::Output::SYNTAX_ERROR:
std::cerr << "syntax error: ";
break;
case simplecpp::Output::PORTABILITY_BACKSLASH:
std::cerr << "portability: ";
break;
case simplecpp::Output::UNHANDLED_CHAR_ERROR:
std::cerr << "unhandled char error: ";
break;
case simplecpp::Output::EXPLICIT_INCLUDE_NOT_FOUND:
std::cerr << "explicit include not found: ";
break;
case simplecpp::Output::FILE_NOT_FOUND:
std::cerr << "file not found: ";
break;
case simplecpp::Output::DUI_ERROR:
std::cerr << "dui error: ";
break;
}
std::cerr << output.msg << std::endl;
}
}
return 0;
}