first approximation of the parser

2026-09-08 11:06:04 +02:00
parent b15ce130f9
commit bdb434d9d5
13 changed files with 910 additions and 5 deletions
@@ -0,0 +1,66 @@
+/*********************************/
+/*                               */
+/*     o.riabenkyi@gmain.com     */
+/*                               */
+/*********************************/
+
+#ifndef CONFIGURATIONPARSER_HPP
+#define CONFIGURATIONPARSER_HPP
+
+#include <cstddef>
+#include <string>
+#include <vector>
+
+#include "Config.hpp"
+#include "LocationConfig.hpp"
+#include "ServerConfig.hpp"
+
+// Reads a webserv configuration file and turns it into a validated Config.
+//
+// Syntax (see webserv_design_notes.md):
+//   - one logical line is exactly one syntactic unit: a block opener
+//     ("server {" / "location /path {"), a lone closing "}", or a single
+//     directive followed by its values
+//   - '#' starts a comment that runs to the end of the line, stripped
+//     before tokenizing
+//   - there is no ';' terminator - a directive's values are simply the
+//     remaining tokens on its line
+//   - a closing "}" must appear alone on its own line
+class ConfigurationParser {
+public:
+    ConfigurationParser();
+    ~ConfigurationParser();
+
+    // Reads the file at `path`, parses it and returns a validated Config.
+    // Throws std::runtime_error on any syntax or validation error.
+    Config parse(const std::string &path);
+
+private:
+    std::vector<std::vector<std::string> > _lines;
+    size_t _pos;
+
+    std::string readFile(const std::string &path) const;
+    void tokenizeLines(const std::string &content);
+    static std::string stripComment(const std::string &line);
+    static std::vector<std::string> splitTokens(const std::string &line);
+    static std::string joinTokens(const std::vector<std::string> &tokens);
+
+    bool hasNext() const;
+    const std::vector<std::string> &peek() const;
+    std::vector<std::string> next();
+
+    ServerConfig parseServerBlock();
+    LocationConfig parseLocationBlock(const std::string &path);
+    void applyServerDirective(ServerConfig &server, const std::string &name,
+                               const std::vector<std::string> &values);
+    void applyLocationDirective(LocationConfig &location, const std::string &name,
+                                 const std::vector<std::string> &values);
+
+    static int toInt(const std::string &s);
+    static size_t parseSize(const std::string &s);
+
+    ConfigurationParser(const ConfigurationParser &other);
+    ConfigurationParser &operator=(const ConfigurationParser &other);
+};
+
+#endif