Allow more than 1 screenshot.

* New screenshot naming: branchname-N.extension (the “-N” ist new).
* In JSON file: Array of strings instead of string, “screenshots”
  instead of “screenshot”.
* Old format is still supported.

src/cgi.cpp

@@ -15,12 +15,14 @@
  */
 
 #include "cgi.hpp"
+
 #include "files.hpp"
 #include "fs-compat.hpp"
 #include "time.hpp"
 
 #include <cgicc/Cgicc.h>
 #include <curl/curl.h>
+#include <fmt/core.h>
 #include <unicode/unistr.h>
 
 #include <algorithm>
@@ -39,6 +41,7 @@
 namespace FediBlock::cgi
 {
 
+using fmt::format;
 using std::back_inserter;
 using std::getline;
 using std::ios;
@@ -65,24 +68,25 @@ entry_type parse_formdata()
     entry.description = cgi("description");
     entry.report_time = time::to_string(system_clock::now());
 
-    const auto screenshot = cgi.getFile("screenshot");
-    if (screenshot != cgi.getFiles().end())
+    for (const auto &screenshot : cgi.getFiles())
     {
-        constexpr size_t size_limit{1024 * 1024 * 2}; // 2 MiB.
-        if (screenshot->getDataLength() > size_limit)
+        constexpr size_t size_limit{1024 * 1024 * 1};
+        if (screenshot.getDataLength() > size_limit)
         {
-            throw runtime_error{"The screenshot is too big. "
-                                "The limit is 2 MiB."};
+            throw runtime_error{format("The screenshot “{0:s}” is too big. "
+                                       "The limit is {1:.1f} MiB.",
+                                       screenshot.getFilename(),
+                                       size_limit / 1024 / 1024)};
         }
 
-        const string filepath{files::get_tmpdir() / screenshot->getFilename()};
+        const string filepath{files::get_tmpdir() / screenshot.getFilename()};
         ofstream file{filepath, ios::binary};
         if (!file.good())
         {
             throw runtime_error{"Could not open temporary file: " + filepath};
         }
-        screenshot->writeToStream(file);
-        entry.screenshot_filepath = filepath;
+        screenshot.writeToStream(file);
+        entry.screenshot_filepaths.push_back(filepath);
     }
 
     return entry;

src/files.cpp

@@ -15,12 +15,15 @@
  */
 
 #include "files.hpp"
+
 #include "fs-compat.hpp"
 #include "json.hpp"
 #include "types.hpp"
 
 #include <fmt/format.h>
 #include <fmt/ostream.h> // For compatibility with fmt 4.
+#include <sys/types.h>
+#include <unistd.h>
 
 #include <algorithm>
 #include <cstdint>
@@ -29,8 +32,6 @@
 #include <sstream>
 #include <stdexcept>
 #include <string>
-#include <sys/types.h>
-#include <unistd.h>
 
 namespace FediBlock::files
 {
@@ -184,11 +185,31 @@ vector<entry_type> read_json_files(const bool cache)
         stringstream ss;
         ss << file.rdbuf();
         auto entry{json::from_json(ss.str())};
-        if (!entry.screenshot_filepath.empty())
+        if (!entry.screenshot_filepaths.empty())
         {
-            const fs::path sh_path{entry.screenshot_filepath};
-            entry.screenshot_filepath = path.stem().string() +=
-                sh_path.extension();
+            std::uint8_t counter{0};
+            for (auto &screenshot : entry.screenshot_filepaths)
+            {
+                ++counter;
+                const fs::path sh_path{screenshot};
+                // clang-format off
+                const auto compat_path{path.parent_path() /= path.stem()
+                                       /= sh_path.extension()};
+                // clang-format on
+                if (entry.screenshot_filepaths.size() == 1
+                    && fs::exists(compat_path))
+                {
+                    // Compatibility for old entries.
+                    screenshot = path.stem().string() += sh_path.extension();
+                }
+                else
+                {
+                    // clang-format off
+                    screenshot = (path.stem().string() += '-')
+                                 += to_string(counter) += sh_path.extension();
+                    // clang-format on
+                }
+            }
         }
         entries.push_back(entry);
     }

src/generators/html.cpp

@@ -109,11 +109,16 @@ void write_html(ostream &out, const vector<entry_type> &entries)
                 << "</a></li>\n";
         }
         out << "      </ul>\n";
-        if (!entry.screenshot_filepath.empty())
+        if (!entry.screenshot_filepaths.empty())
         {
-            out << "      <p><strong>Screenshot:</strong><br>"
-                << "<a href=\"" << entry.screenshot_filepath << "\"><img src=\""
-                << entry.screenshot_filepath << R"("></a></p>)" << '\n';
+            out << "      <strong>Screenshots:</strong><br>\n"
+                << "      <ul>\n";
+            for (const auto &screenshot : entry.screenshot_filepaths)
+            {
+                out << "        <li><a href=\"" << screenshot << "\">"
+                    << screenshot << "</a></li>\n";
+            }
+            out << "      </ul>";
         }
         out << "    </details>\n";
     }

src/generators/rss.cpp

@@ -165,13 +165,17 @@ void write_rss(ostream &out, const vector<entry_type> &entries,
                                            receipt);
         }
         tmp_item_description += "</ul>";
-        if (!entry.screenshot_filepath.empty())
+        if (!entry.screenshot_filepaths.empty())
         {
-            tmp_item_description += "<p><strong>Screenshot:</strong><br>";
-            tmp_item_description += format("<a href=\"{0:s}{1:s}\">"
-                                           "<img src=\"{0:s}{1:s}\" "
-                                           "height=\"200\"></a></p>\n",
-                                           baseurl, entry.screenshot_filepath);
+            tmp_item_description += "<p><strong>Screenshots:</strong><br>";
+            for (const auto &screenshot : entry.screenshot_filepaths)
+            {
+                tmp_item_description += format("<a href=\"{0:s}{1:s}\">"
+                                               "<img src=\"{0:s}{1:s}\" "
+                                               "height=\"200\"></a> ",
+                                               baseurl, screenshot);
+            }
+            tmp_item_description += "</p>";
         }
         auto item_description{item.append_child("description")};
         item_description.append_child(pugi::node_cdata)

src/git.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "git.hpp"
+
 #include "config.hpp"
 #include "files.hpp"
 #include "fs-compat.hpp"
@@ -153,10 +154,16 @@ void commit(const entry_type &entry)
     file << json::to_json(entry);
     file.close();
 
-    if (!entry.screenshot_filepath.empty())
+    if (!entry.screenshot_filepaths.empty())
     {
-        const string extension{fs::path(entry.screenshot_filepath).extension()};
-        fs::copy(entry.screenshot_filepath, basename + extension);
+        uint8_t counter{0};
+        for (const auto &screenshot : entry.screenshot_filepaths)
+        {
+            ++counter;
+            const string extension{fs::path(screenshot).extension()};
+            fs::copy(screenshot,
+                     basename + "-" += to_string(counter) += extension);
+        }
     }
 
     // Add files.

src/json.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "json.hpp"
+
 #include "fs-compat.hpp"
 #include "types.hpp"
 
@@ -25,13 +26,17 @@ namespace FediBlock::json
 
 string to_json(const entry_type &entry)
 {
-    const string filename{fs::path(entry.screenshot_filepath).filename()};
+    vector<string> filenames;
+    for (const auto &screenshot : entry.screenshot_filepaths)
+    {
+        filenames.push_back(fs::path(screenshot).filename());
+    }
     // clang-format off
     const nlohmann::json json{{"instance", entry.instance},
                               {"tags", entry.tags},
                               {"receipts", entry.receipts},
                               {"description", entry.description},
-                              {"screenshot", filename},
+                              {"screenshots", filenames},
                               {"report_time", entry.report_time}};
     // clang-format on
     return json.dump(4);
@@ -55,7 +60,18 @@ entry_type from_json(const string_view json_string)
     entry.receipts = json[0].at("receipts").get<vector<string>>();
     try
     {
-        entry.screenshot_filepath = json[0].at("screenshot").get<string>();
+        if (json[0].count("screenshot") == 1)
+        {
+            // Compatibility for old entries.
+            entry.screenshot_filepaths.push_back(
+                json[0].at("screenshot").get<string>());
+        }
+        else
+        {
+            entry.screenshot_filepaths = json[0]
+                                             .at("screenshots")
+                                             .get<vector<string>>();
+        }
     }
 #if NLOHMANN_JSON_VERSION_MAJOR >= 3
     catch (const nlohmann::detail::out_of_range &) // Ignore missing screenshot.

src/types.hpp

@@ -32,7 +32,7 @@ struct entry_type
     vector<string> tags;
     vector<string> receipts;
     string description;
-    string screenshot_filepath;
+    vector<string> screenshot_filepaths;
     string report_time;
 };