Ctags cleanup

README.md

@@ -23,7 +23,7 @@ towards libclang with speed and ease of use in mind.
 * Highlighting of similar types (C++)
 * Automated documentation search (C++)
 * Go to declaration, implementation, methods and usages (C++)
-* Find symbol through ctags
+* Find symbol through Ctags
 * Spell checking depending on file context
 * Run shell commands within JuCi++
 * Regex search and replace

src/CMakeLists.txt

@@ -40,6 +40,7 @@ set(global_libraries ${global_libraries}
 
 set(project_files
     config.cc
+    ctags.cc
     dialogs.cc
     dialogs_unix.cc
     directories.cc

src/ctags.cc

@@ -0,0 +1,84 @@
+#include "ctags.h"
+#include "config.h"
+#include "terminal.h"
+
+//Temporary fix for current Arch Linux boost linking problem
+#ifdef __GNUC_PREREQ
+#if __GNUC_PREREQ(5,1)
+#include <regex>
+#define REGEX_NS std
+#endif
+#endif
+#ifndef REGEX_NS
+#include <boost/regex.hpp>
+#define REGEX_NS boost
+#endif
+
+std::unique_ptr<std::stringstream> Ctags::get_result(const boost::filesystem::path &path, std::vector<boost::filesystem::path> exclude_paths) {
+  std::string exclude;
+  for(auto &path: exclude_paths) {
+    if(!path.empty())
+      exclude+=" --exclude="+path.string();
+  }
+  
+  std::stringstream stdin_stream;
+  //TODO: when debian stable gets newer g++ version that supports move on streams, remove unique_ptr below
+  std::unique_ptr<std::stringstream> stdout_stream(new std::stringstream());
+  auto command=Config::get().project.ctags_command+exclude+" --fields=n --sort=foldcase -f- -R *";
+  Terminal::get().process(stdin_stream, *stdout_stream, command, path);
+  return stdout_stream;
+}
+
+Ctags::Data Ctags::parse_line(const std::string &line) {
+  Data data;
+  
+  const static REGEX_NS::regex regex("^([^\t]+)\t([^\t]+)\t(?:/\\^)?([ \t]*)(.+);\"\tline:([0-9]+)$");
+  REGEX_NS::smatch sm;
+  if(REGEX_NS::regex_match(line, sm, regex)) {
+    data.source=sm[4].str();
+    if(data.source.size()>1 && data.source[data.source.size()-1]=='/' && data.source[data.source.size()-2]!='\\') {
+      data.source.pop_back();
+      if(data.source.size()>1 && data.source[data.source.size()-1]=='$' && data.source[data.source.size()-2]!='\\')
+        data.source.pop_back();
+      auto symbol=sm[1].str();
+      data.path=sm[2].str();
+      data.index=sm[3].str().size();
+      try {
+        data.line=std::stoul(sm[5].str())-1;
+      }
+      catch(const std::exception&) {
+        data.line=0;
+      }
+      
+      size_t pos=data.source.find(symbol);
+      if(pos!=std::string::npos)
+        data.index+=pos;
+      
+      data.source=Glib::Markup::escape_text(data.source);
+      pos=-1;
+      while((pos=data.source.find(symbol, pos+1))!=std::string::npos) {
+        data.source.insert(pos+symbol.size(), "</b>");
+        data.source.insert(pos, "<b>");
+        pos+=7+symbol.size();
+      }
+    }
+    else {
+      data.path=sm[2].str();
+      data.index=0;
+      data.source=sm[1].str();
+      try {
+        data.line=std::stoul(sm[3].str())-1;
+      }
+      catch(const std::exception&) {
+        data.line=0;
+      }
+      data.source="<b>"+Glib::Markup::escape_text(data.source)+"</b>";
+    }
+  }
+  else {
+    Terminal::get().print("Warning (ctags): please report to the juCi++ project that the following line was not parsed:\n"+
+                          line+'\n', true);
+  }
+  
+  return data;
+}

src/ctags.h

@@ -0,0 +1,23 @@
+#ifndef JUCI_CTAGS_H_
+#define JUCI_CTAGS_H_
+#include <string>
+#include <boost/filesystem.hpp>
+#include <sstream>
+#include <vector>
+
+class Ctags {
+public:
+  class Data {
+  public:
+    std::string path;
+    unsigned long line;
+    unsigned long index;
+    std::string source;
+  };
+  
+  static std::unique_ptr<std::stringstream> get_result(const boost::filesystem::path &path, std::vector<boost::filesystem::path> exclude_paths);
+  
+  static Data parse_line(const std::string &line);
+};
+
+#endif //JUCI_CTAGS_H_

src/window.cc

@@ -8,6 +8,7 @@
 #include "project.h"
 #include "entrybox.h"
 #include "info.h"
+#include "ctags.h"
 
 namespace sigc {
 #ifndef SIGC_FUNCTORS_DEDUCE_RESULT_TYPE_WITH_DECLTYPE
@@ -453,14 +454,10 @@ void Window::set_menu_actions() {
     if(auto view=Notebook::get().get_current_view()) {
       auto build=Project::Build::create(view->file_path);
       auto run_path=std::make_shared<boost::filesystem::path>(build->project_path);
-      std::string exclude;
+      std::vector<boost::filesystem::path> exclude_paths;
       if(!run_path->empty()) {
-        auto relative_path=filesystem::get_relative_path(build->get_default_path(), build->project_path);
-        if(!relative_path.empty())
-          exclude+=" --exclude="+relative_path.string();
-        relative_path=filesystem::get_relative_path(build->get_debug_path(), build->project_path);
-        if(!relative_path.empty())
-          exclude+=" --exclude="+relative_path.string();
+        exclude_paths.emplace_back(filesystem::get_relative_path(build->get_default_path(), build->project_path));
+        exclude_paths.emplace_back(filesystem::get_relative_path(build->get_debug_path(), build->project_path));
       }
       else {
         if(!Directories::get().path.empty())
@@ -468,98 +465,43 @@ void Window::set_menu_actions() {
         else
           *run_path=view->file_path.parent_path();
       }
-      std::stringstream stdin_stream, stdout_stream;
-      auto command=Config::get().project.ctags_command+exclude+" --fields=n --sort=foldcase -f- -R *";
-      auto exit_status=Terminal::get().process(stdin_stream, stdout_stream, command, *run_path);
-      if(exit_status==0) {
-        auto dialog_iter=view->get_iter_for_dialog();
-        view->selection_dialog=std::unique_ptr<SelectionDialog>(new SelectionDialog(*view, view->get_buffer()->create_mark(dialog_iter), true, true));
-        auto rows=std::make_shared<std::unordered_map<std::string, Source::Offset> >();
+      auto stream=Ctags::get_result(*run_path, exclude_paths);
+      stream->seekg(0, std::ios::end);
+      auto length=stream->tellg();
+      if(length==0)
+        return;
+      stream->seekg(0, std::ios::beg);
+      
+      auto dialog_iter=view->get_iter_for_dialog();
+      view->selection_dialog=std::unique_ptr<SelectionDialog>(new SelectionDialog(*view, view->get_buffer()->create_mark(dialog_iter), true, true));
+      auto rows=std::make_shared<std::unordered_map<std::string, Source::Offset> >();
         
-        std::string line;
-        while(std::getline(stdout_stream, line)) {
-          std::string symbol, file, source_line;
-          unsigned long line_nr;
-          size_t last_pos=-1, pos;
-          
-          pos=line.find("\t", last_pos+1);
-          if(pos==std::string::npos || last_pos+1>=line.size()) {
-            Terminal::get().print("Warning (ctags): failed to parse symbol\n", true);
-            continue;
-          }
-          symbol=line.substr(last_pos+1, pos-last_pos-1);
-          last_pos=pos;
-          
-          pos=line.find("\t", last_pos+1);
-          if(pos==std::string::npos || last_pos+1>=line.size()) {
-            Terminal::get().print("Warning (ctags): failed to parse file\n", true);
-            continue;
-          }
-          file=line.substr(last_pos+1, pos-last_pos-1);
-          last_pos=pos;
-          
-          pos=line.find("/;\"\t", last_pos+1);
-          if(pos==std::string::npos || last_pos+3>=line.size()) {
-            //Skipping defines
-            continue;
-          }
-          pos+=3;
-          source_line=line.substr(last_pos+3, pos-last_pos-7);
-          size_t line_index=0;
-          for(;line_index<source_line.size();++line_index) {
-            if(source_line[line_index]!=' ' && source_line[line_index]!='\t')
-              break;
-          }
-          if(line_index>0)
-            source_line=source_line.substr(line_index);
-          size_t line_index_add=source_line.find(symbol);
-          if(line_index_add!=std::string::npos)
-            line_index+=line_index_add;
-          
-          source_line=Glib::Markup::escape_text(source_line);
-          size_t bold_pos=-1;
-          while((bold_pos=source_line.find(symbol, bold_pos+1))!=std::string::npos) {
-            source_line.insert(bold_pos+symbol.size(), "</b>");
-            source_line.insert(bold_pos, "<b>");
-            bold_pos+=7+symbol.size();
-          }
-          last_pos=pos;
-          
-          if(last_pos+6>=line.size()) {
-            Terminal::get().print("Warning (ctags): failed to parse line number\n", true);
-            continue;
-          }
-          try {
-            line_nr=std::stoul(line.substr(last_pos+6, line.size()-last_pos-6));
-          }
-          catch(const std::exception &) {
-            Terminal::get().print("Warning (ctags): failed to parse line number\n", true);
-            continue;
-          }
-          
-          std::string row=file+":"+std::to_string(line_nr)+": "+source_line;
-          (*rows)[row]=Source::Offset(line_nr-1, line_index, file);
-          view->selection_dialog->add_row(row);
-        }
+      std::string line;
+      while(std::getline(*stream, line)) {
+        auto data=Ctags::parse_line(line);
+        
+        std::string row=data.path+":"+std::to_string(data.line+1)+": "+data.source;
+        (*rows)[row]=Source::Offset(data.line, data.index, data.path);
+        view->selection_dialog->add_row(row);
+      }
         
-        if(rows->size()==0)
+      if(rows->size()==0)
+        return;
+      view->selection_dialog->on_select=[this, rows, run_path](const std::string &selected, bool hide_window) {
+        auto offset=rows->at(selected);
+        boost::filesystem::path declaration_file;
+        boost::system::error_code ec;
+        declaration_file=boost::filesystem::canonical(*run_path/offset.file_path, ec);
+        if(ec)
           return;
-        view->selection_dialog->on_select=[this, rows, run_path](const std::string &selected, bool hide_window) {
-          auto offset=rows->at(selected);
-          boost::filesystem::path declaration_file;
-          boost::system::error_code ec;
-          declaration_file=boost::filesystem::canonical(*run_path/offset.file_path, ec);
-          if(ec)
-            return;
-          Notebook::get().open(declaration_file);
-          auto view=Notebook::get().get_current_view();
-          view->place_cursor_at_line_index(offset.line, offset.index);
-          view->scroll_to_cursor_delayed(view, true, false);
-          view->hide_tooltips();
-        };
+        Notebook::get().open(declaration_file);
+        auto view=Notebook::get().get_current_view();
+        view->place_cursor_at_line_index(offset.line, offset.index);
+        view->scroll_to_cursor_delayed(view, true, false);
         view->hide_tooltips();
-        view->selection_dialog->show();
-      }
+      };
+      view->hide_tooltips();
+      view->selection_dialog->show();
     }
   });