From d3d06926a671231a3801059434625bbcdea31cd7 Mon Sep 17 00:00:00 2001
From: David Beniamine <david.beniamine@imag.fr>
Date: Thu, 12 Mar 2015 21:02:55 -0300
Subject: [PATCH] Add: Completion for todo.txt

Intelligent complete for context and projects, try it ;)
---
 README.markdown   | 26 ++++++++++++++++++++++++--
 doc/todo.txt      | 27 ++++++++++++++++++++++++++-
 ftplugin/todo.vim | 41 ++++++++++++++++++++++++++++++++++++++---
 3 files changed, 88 insertions(+), 6 deletions(-)

diff --git a/README.markdown b/README.markdown
index 2819f88..08cbe55 100644
--- a/README.markdown
+++ b/README.markdown
@@ -3,8 +3,8 @@
 ## What is this plugin ?
 
 This plugin is a fork of freitass todo.txt (see section 1.3) vim plugin adding
-a nice two level sorting function designed for todo.txt files (see section
-1.4).
+a nice two level sorting function designed for todo.txt files and a complete
+function for context and projects (see section 1.4).
 
 ## Install
 
@@ -69,6 +69,28 @@ see :help sort
 
 Also `<LocalLeader>-x` is a toggle which allow you to unmark a task as done.
 
+We also provide a nice complete function for project and context, to use it
+add the following lines to your vimrc:
+
+" Use TodoComplete as the user complete
+au filetype todo setlocal completefunc=TodoComplete
+
+You can also start automatically the completion when entering '+' or '@' by
+adding the next lines to your vimrc:
+
+" Auto complete projects
+au filetype todo imap + +<C-X><C-U>
+" Auto complete contexts
+au filetype todo imap @ @<C-X><C-U>
+
+The TodoComplete function is designed to complete projects (starting by '+')
+and context (starting by '@'). If you use it on a regulard word, it will do a
+normal buffer completion.
+If you try to complete a project, it will propose all projects in the file and
+for each of them, it will show their context in the preview window.
+TodoCompelte does the same thing for context except that it gives in the
+preview the list of projects existing in each existing contexts.
+
 ## Todo
 
 Complete documentation
diff --git a/doc/todo.txt b/doc/todo.txt
index e9e07ac..024d238 100644
--- a/doc/todo.txt
+++ b/doc/todo.txt
@@ -31,7 +31,7 @@ COMMANDS                                                       *todo-commands*
 
 `date<tab>`  : (Insert mode) Insert the current date
 
-`<LocalLeader>-x` : Toggle mark task as done (inserts or remove current date as 
+`<LocalLeader>-x` : Toggle mark task as done (inserts or remove current date as
                     completion date)
 
 `<LocalLeader>-X` : Mark all tasks as completed
@@ -56,3 +56,28 @@ g:Todo_txt_second_level_sort_mode="i"
 
 
 For more information on the available flags see help :sort
+
+We also provide a nice complete function for project and context, to use it
+add the following lines to your vimrc:
+
+" Use TodoComplete as the user complete
+au filetype todo setlocal completefunc=TodoComplete
+
+You can also start automatically the completion when entering '+' or '@' by
+adding the next lines to your vimrc:
+
+" Auto complete projects
+au filetype todo imap + +<C-X><C-U>
+" Auto complete contexts
+au filetype todo imap @ @<C-X><C-U>
+
+===============================================================================
+COMPLETION                                                      *todo-complete*
+
+The TodoComplete function is designed to complete projects (starting by '+')
+and context (starting by '@'). If you use it on a regulard word, it will do a
+normal buffer completion.
+If you try to complete a project, it will propose all projects in the file and
+for each of them, it will show their context in the preview window.
+TodoCompelte does the same thing for context except that it gives in the
+preview the list of projects existing in each existing contexts.
diff --git a/ftplugin/todo.vim b/ftplugin/todo.vim
index 4f65f21..81cd633 100644
--- a/ftplugin/todo.vim
+++ b/ftplugin/todo.vim
@@ -16,6 +16,7 @@ set cpo&vim
 setlocal textwidth=0
 setlocal wrapmargin=0
 
+
 " Functions {{{1
 function! s:TodoTxtRemovePriority()
     :s/^(\w)\s\+//ge
@@ -38,9 +39,9 @@ function! TodoTxtUnMarkAsDone()
 endfunction
 
 function! TodoTxtMarkAsDone()
- "       call s:TodoTxtRemovePriority()
-        call TodoTxtPrependDate()
-        normal! Ix 
+    "       call s:TodoTxtRemovePriority()
+    call TodoTxtPrependDate()
+    normal! Ix 
 endfunction
 
 function! TodoTxtMarkAllAsDone()
@@ -218,6 +219,40 @@ function! TodoFoldText()
                 \ . ' Completed tasks '
 endfunction
 
+" Intelligent completion for projects and Contexts
+fun! TodoComplete(findstart, base)
+    if a:findstart
+        let line = getline('.')
+        let start = col('.') - 1
+        while start > 0 && line[start - 1] !~ '\s'
+            let start -= 1
+        endwhile
+        return start
+    else
+        let res = []
+        let file = readfile(expand("%:p"))
+        for line in file
+            if line =~ " ".a:base
+                let item={}
+                let item.word=substitute(line,'.*\('.a:base.'\S*\).*','\1',"")
+                if a:base =~ '+'
+                    let item.info="Context: ".substitute(line,'.*\s\(@\S\S*\).*','\1',"")
+                elseif a:base =~ '@'
+                    let l:pr=[]
+                    for line2 in file
+                        if line2 =~ l:item.word
+                            call add(l:pr,substitute(line2,'.*\s\(+\S\S*\).*','\1',""))
+                        endif
+                    endfor
+                    let item.info="Projects: ".join(uniq(l:pr), " ")
+                endif
+                call add(res,item)
+            endif
+        endfor
+        return res
+    endif
+endfun
+
 " Restore context {{{1
 let &cpo = s:save_cpo
 " Modeline {{{1