ds

source/src/utils/utils.cpp

@@ -1,4 +1,8 @@
 #include "utils.hpp"
+#include "httplib.hpp"
+#include "json.hpp"
+
+
 #include <iostream>
 #include <string>
 #include <fstream>
@@ -10,6 +14,7 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 #include <cctype>
+#include <sstream>
 
 namespace dropshell {
 
@@ -445,4 +450,183 @@ std::string tolower(const std::string& str) {
     return result;
 }
 
+// Common utility function to make HTTP requests
+struct HttpResult {
+    bool success;
+    int status;
+    std::string body;
+    std::string error;
+};
+
+HttpResult make_http_request(const std::string& url) {
+    try {
+        // Parse the URL to get host and path
+        std::string host;
+        std::string path;
+        size_t protocol_end = url.find("://");
+        if (protocol_end != std::string::npos) {
+            size_t host_start = protocol_end + 3;
+            size_t path_start = url.find('/', host_start);
+            if (path_start != std::string::npos) {
+                host = url.substr(host_start, path_start - host_start);
+                path = url.substr(path_start);
+            } else {
+                host = url.substr(host_start);
+                path = "/";
+            }
+        } else {
+            return {false, 0, "", "Invalid URL format"};
+        }
+
+        // Create HTTP client
+        httplib::Client cli(host);
+        cli.set_connection_timeout(10); // 10 second timeout
+
+        // Make GET request
+        auto res = cli.Get(path);
+        if (!res) {
+            return {false, 0, "", "Failed to connect to server"};
+        }
+        if (res->status != 200) {
+            return {false, res->status, "", "HTTP request failed with status " + std::to_string(res->status)};
+        }
+
+        return {true, res->status, res->body, ""};
+    } catch (const std::exception& e) {
+        return {false, 0, "", std::string("Exception: ") + e.what()};
+    }
+}
+
+bool download_file(const std::string &url, const std::string &destination) {
+    auto result = make_http_request(url);
+    if (!result.success) {
+        warning << "Failed to download file from URL: " << url << std::endl;
+        return false;
+    }
+
+    try {
+        std::ofstream out_file(destination, std::ios::binary);
+        if (!out_file) {
+            warning << "Failed to open file for writing: " << destination << std::endl;
+            return false;
+        }
+        out_file.write(result.body.c_str(), result.body.size());
+        out_file.close();
+        return true;
+    } catch (const std::exception& e) {
+        warning << "Failed to download file from URL: " << url << std::endl;
+        warning << "Exception: " << e.what() << std::endl;
+        return false;
+    }
+}
+
+nlohmann::json get_json_from_url(const std::string &url) {
+    auto result = make_http_request(url);
+    if (!result.success) {
+        warning << "Failed to get JSON from URL: " << url << std::endl;
+        return nlohmann::json();
+    }
+
+    try {
+        return nlohmann::json::parse(result.body);
+    } catch (const nlohmann::json::parse_error& e) {
+        warning << "Failed to parse JSON from URL: " << url << std::endl;
+        warning << "JSON: " << result.body << std::endl;
+        return nlohmann::json();
+    }
+}
+
+std::string get_string_from_url(const std::string &url) {
+    auto result = make_http_request(url);
+    if (!result.success) {
+        warning << "Failed to get string from URL: " << url << std::endl;
+        return std::string();
+    }
+    return result.body;
+}
+
+bool match_line(const std::string &line, const std::string &pattern) {
+    return trim(line) == trim(pattern);
+}
+
+// replace or append a block of text to a file, matching first and last lines if replacing.
+// edits file in-place.
+bool file_replace_or_add_segment(std::string filepath, std::string segment)
+{
+    std::string first_line = segment.substr(0, segment.find("\n"));
+
+    // look backwards until we get a non-empty line.
+    size_t last_line_pos = segment.rfind("\n");
+    while (last_line_pos != std::string::npos) {
+        std::string last_line = segment.substr(last_line_pos + 1);
+        if (!trim(last_line).empty()) {
+            break;
+        }
+        last_line_pos = segment.rfind("\n", last_line_pos - 1);
+    }
+    std::string last_line = segment.substr(last_line_pos + 1);
+
+    // Read the entire file into memory
+    std::ifstream input_file(filepath);
+    if (!input_file.is_open()) {
+        std::cerr << "Error: Unable to open file: " << filepath << std::endl;
+        return false;
+    }
+
+    std::vector<std::string> file_lines;
+    std::string line;
+    while (std::getline(input_file, line)) {
+        file_lines.push_back(line);
+    }
+    input_file.close();
+
+    // Try to find the matching block
+    bool found_match = false;
+    for (size_t i = 0; i < file_lines.size(); i++) {
+        if (match_line(file_lines[i], first_line)) {
+            // Found potential start, look for end
+            for (size_t j = i + 1; j < file_lines.size(); j++) {
+                if (match_line(file_lines[j], last_line)) {
+                    // Found matching block, replace it
+                    file_lines.erase(file_lines.begin() + i, file_lines.begin() + j + 1);
+                    
+                    // Split segment into lines and insert them
+                    std::vector<std::string> segment_lines;
+                    std::istringstream segment_stream(segment);
+                    while (std::getline(segment_stream, line)) {
+                        segment_lines.push_back(line);
+                    }
+                    file_lines.insert(file_lines.begin() + i, segment_lines.begin(), segment_lines.end());
+                    
+                    found_match = true;
+                    break;
+                }
+            }
+            if (found_match) break;
+        }
+    }
+
+    // If no match found, append the segment
+    if (!found_match) {
+        std::istringstream segment_stream(segment);
+        while (std::getline(segment_stream, line)) {
+            file_lines.push_back(line);
+        }
+    }
+
+    // Write back to file
+    std::ofstream output_file(filepath);
+    if (!output_file.is_open()) {
+        std::cerr << "Error: Unable to open file for writing: " << filepath << std::endl;
+        return false;
+    }
+
+    for (const auto& line : file_lines) {
+        output_file << line << "\n";
+    }
+    output_file.close();
+
+    return true;
+}
+
 } // namespace dropshell 

source/src/utils/utils.hpp

@@ -5,6 +5,7 @@
 #include <map>
 
 #include "output.hpp"
+#include "json.hpp"
 
 namespace dropshell {
 
@@ -61,4 +62,11 @@ std::string get_line_wrap(std::string & src, int maxchars);
 
 std::string tolower(const std::string& str);
 
+bool download_file(const std::string& url, const std::string& destination);
+nlohmann::json get_json_from_url(const std::string& url);
+std::string get_string_from_url(const std::string& url);
+
+// replace or append a block of text to a file, matching first and last lines if replacing.
+bool file_replace_or_add_segment(std::string filepath, std::string segment);
+
 } // namespace dropshell