Add app document route core

src/app.cpp

@@ -5,6 +5,7 @@
 #include "node_dialog_open.h"
 #include "node_progress_bar.h"
 #include "mp4enc.h"
+#include "app_core/document_route.h"
 #include "renderer_gl/opengl_capabilities.h"
 
 #ifdef __APPLE__
@@ -187,15 +188,11 @@ void App::create()
 
 void App::open_document(std::string path)
 {
-    std::regex r(R"((.*)[\\/]([^\\/]+)\.(\w+)$)");
-    std::smatch m;
-    if (!std::regex_search(path, m, r))
+    const auto route = pp::app::classify_document_open_path(path);
+    if (!route)
         return;
-    std::string base = m[1].str();
-    std::string name = m[2].str();
-    std::string ext = m[3].str();
 
-    if (str_iequals(ext, "abr"))
+    if (route.value().kind == pp::app::DocumentOpenKind::import_abr)
     {
         auto mb = message_box("Import ABR", "Would you like to import the brushes?", true);
         mb->on_submit = [this, path] (Node* target) {
@@ -203,7 +200,7 @@ void App::open_document(std::string path)
             target->destroy();
         };
     }
-    else if (str_iequals(ext, "ppbr"))
+    else if (route.value().kind == pp::app::DocumentOpenKind::import_ppbr)
     {
         auto mb = message_box("Import PPBR", "Would you like to import the brushes?", true);
         mb->on_submit = [this, path] (Node* target) {
@@ -213,6 +210,8 @@ void App::open_document(std::string path)
     }
     else
     {
+        const std::string base = route.value().directory;
+        const std::string name = route.value().name;
         auto open_action = [this, path, base, name] {
             doc_name = name;
             doc_dir = base;

src/app_core/document_route.cpp

@@ -0,0 +1,67 @@
+#include "app_core/document_route.h"
+
+#include <cctype>
+#include <utility>
+
+namespace pp::app {
+namespace {
+
+[[nodiscard]] bool is_extension_char(char value) noexcept
+{
+    const auto ch = static_cast<unsigned char>(value);
+    return std::isalnum(ch) != 0 || value == '_';
+}
+
+[[nodiscard]] std::string lowercase_ascii(std::string_view value)
+{
+    std::string lowered;
+    lowered.reserve(value.size());
+    for (const char ch : value) {
+        lowered.push_back(static_cast<char>(std::tolower(static_cast<unsigned char>(ch))));
+    }
+    return lowered;
+}
+
+}
+
+pp::foundation::Result<DocumentOpenRoute> classify_document_open_path(std::string_view path)
+{
+    const auto separator = path.find_last_of("/\\");
+    if (separator == std::string_view::npos || separator + 1U >= path.size()) {
+        return pp::foundation::Result<DocumentOpenRoute>::failure(
+            pp::foundation::Status::invalid_argument("document path must include a directory and file name"));
+    }
+
+    const auto dot = path.find_last_of('.');
+    if (dot == std::string_view::npos || dot <= separator + 1U || dot + 1U >= path.size()) {
+        return pp::foundation::Result<DocumentOpenRoute>::failure(
+            pp::foundation::Status::invalid_argument("document path must include a file extension"));
+    }
+
+    const std::string_view extension = path.substr(dot + 1U);
+    for (const char ch : extension) {
+        if (!is_extension_char(ch)) {
+            return pp::foundation::Result<DocumentOpenRoute>::failure(
+                pp::foundation::Status::invalid_argument("document extension contains unsupported characters"));
+        }
+    }
+
+    auto lowered_extension = lowercase_ascii(extension);
+    auto kind = DocumentOpenKind::open_project;
+    if (lowered_extension == "abr") {
+        kind = DocumentOpenKind::import_abr;
+    } else if (lowered_extension == "ppbr") {
+        kind = DocumentOpenKind::import_ppbr;
+    }
+
+    return pp::foundation::Result<DocumentOpenRoute>::success(
+        DocumentOpenRoute {
+            .kind = kind,
+            .path = std::string(path),
+            .directory = std::string(path.substr(0U, separator)),
+            .name = std::string(path.substr(separator + 1U, dot - separator - 1U)),
+            .extension = std::move(lowered_extension),
+        });
+}
+
+}

src/app_core/document_route.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "foundation/result.h"
+
+#include <string>
+#include <string_view>
+
+namespace pp::app {
+
+enum class DocumentOpenKind {
+    import_abr,
+    import_ppbr,
+    open_project,
+};
+
+struct DocumentOpenRoute {
+    DocumentOpenKind kind = DocumentOpenKind::open_project;
+    std::string path;
+    std::string directory;
+    std::string name;
+    std::string extension;
+};
+
+[[nodiscard]] pp::foundation::Result<DocumentOpenRoute> classify_document_open_path(
+    std::string_view path);
+
+}