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*CCTree.txt* Plugin for C Call-Tree Explorer *CCTree* Author: Hari Rangarajan (First.Last AT gmail DOT com) Last Change: 20 May 2011 CCTree version 1.51 For Vim version 7.0 and above ============================================================================== 1. Overview |CCTree-overview| 2. Downloads |CCTree-download| 3. Installation |CCTree-installation| 4. Configuration |CCTree-configuration| 5. Features |CCTree-features| 6. Limitations |CCTree-limitations| 7. FAQ & TIPS |CCTree-faq| 8. History |CCTree-history| 9. Thanks |CCTree-thanks| ============================================================================== 1. Overview~ *CCTree-overview* Plugin generates dependency-trees for symbols using a cscope database in Vim. Basic cross-referencing includes functions and macros. Enhanced symbol processing covers macros, typedefs, enums, and global variables. Requires Cscope and works best with C code. ============================================================================== 2. Downloads~ *CCTree-download* You can download the latest release of the script from this url : http://www.vim.org/scripts/script.php?script_id=2368 Cscope packages can be found here: http://cscope.sourceforge.net/ http://code.google.com/p/cscope-win32/ ============================================================================== 3. Installation~ *CCTree-installation* Copy this file to ~/.vim/plugins/ or to /vimfiles/plugins/ (on Win32 platforms) It should also be possible to load it as a filetype plugin ~/.vim/ftplugin/c/ Need to set :filetype plugin on ============================================================================== CONFIGURATION *CCTree-configuration* 4. Options~ You can customize behavior by changing the following variable settings 4.1.1 Cscope Symbol Database~ *CCTreeCscopeDb* Cscope database file, g:CCTreeCscopeDb = "cscope.out" 4.1.2 Call-tree Depth~ *CCTreeRecursiveDepth* Maximum call levels, g:CCTreeRecursiveDepth = 3 4.1.3 Call-tree Minimum Visible Depth~ *CCTreeMinVisibleDepth* Maximum visible(unfolded) level, g:CCTreeMinVisibleDepth = 3 4.1.4 Call-tree window display~ 4.4.1 Orientation~ *CCTreeOrientation* Orientation of window, g:CCTreeOrientation = "leftabove" (standard vim options for split: [right|left][above|below]) 4.5 Direction~ *CCTreeWindowVertical* Use Vertical window, g:CCTreeWindowVertical = 1 4.5.1 Dimensions~ These settings determine the layout of the CCTree preview window. 4.5.2 Horizontal Window Settings~ *CCTreeWindowHeight* Horizontal window, g:CCTreeWindowHeight, default is -1. 4.5.2 Vertical Window Settings~ *CCTreeWindowMinWidth* *CCTreeWindowWidth* Minimum width for window, g:CCTreeWindowMinWidth = 40. g:CCTreeWindowWidth = -1, auto-select best width to fit. 4.6 Call-tree display format~ *CCTreeDisplayMode* Display format, g:CCTreeDisplayMode, default: 1 Values: 1 -- Ultra-compact (takes minimum screen width) 2 -- Compact (Takes little more space) 3 -- Wide (Takes copious amounts of space) For vertical splits, 1 and 2 are good, while 3 is good for horizontal displays. 4.7. Dynamic Call-tree highlighting~ *CCTreeHilightCallTree* Enable/disable dynamic call-tree highlighting, default: 1 4.7.1 Syntax items~ *CCTreeSymbol* *CCTreeHiSymbol* CCTreeSymbol is the symbol name. CCTreeHiSymbol is the highlighted call tree functions. *CCTreeMarkers* *CCTreeHiMarkers* CCTreeMarkers include "|","+--->". CCTreeHiMarkers is the same as CCTreeMarkers except these denote the highlighted call-tree. ============================================================================== COMMAND LIST *CCTree-commands-list* Database Management~ CCTreeLoadDB <dbname> CCTreeAppendDB <dbname> CCTreeUnLoadDB CCTreeShowLoadedDBs Refer to |CCTree-usage| Native Xref Database~ CCTreeLoadXRefDB <dbname> CCTreeSaveXRefDB <dbname> Refer to |CCTree-fast-loading| Symbol tracing~ CCTreeTraceForward <symbolname> CCTreeTraceReverse <symbolname> CCTreeRecurseDepthPlus CCTreeRecurseDepthMinus Refer to |CCTree-explore-source| Trace Management~ CCTreeWindowSaveCopy CCTreeWindowHiCallTree Refer to |CCTree-preview-window| Dynamic configuration~ CCTreeOptsEnable <option> (<tab> for auto-complete) CCTreeOptsDisable <option> (<tab> for auto-complete) CCTreeOptsToggle <option> (<tab> for auto-complete) Options~ DynamicTreeHiLights: Control dynamic tree highlighting UseUnicodeSymbols: Use of UTF-8 special characters for tree UseConceal: Use (+Conceal) feature instead of 'ignore' syntax highlighting. Allows CCTree window to be exported in HTML without syntax markup characters. (Vim 7.3+ only) *CCTree-Enhanced-Symbol-Processing* EnhancedSymbolProcessing: Cross-reference enums, macros, global variables, typedefs (WARNING: Database processing speeds will be slow). SHORTCUT KEYS *CCTree-Key-Map* Default Mappings~ *CCTree-Default-Key-Map* Get reverse call tree for symbol <C-\>< Get forward call tree for symbol <C-\>> Increase depth of tree and update <C-\>= Decrease depth of tree and update <C-\>- Open symbol in other window <CR> Preview symbol in other window <Ctrl-P> Save copy of preview window <C-\>y Highlight current call-tree flow <C-l> Compress(Fold) call tree view zs (This is useful for viewing long call trees which span across multiple pages) Custom user-mappings *CCTree-Custom-Key-Map* Users can custom-map the short-cut keys by overriding the following variables in their Vim start-up configuration > let g:CCTreeKeyTraceForwardTree = '<C-\>>' let g:CCTreeKeyTraceReverseTree = '<C-\><' let g:CCTreeKeyHilightTree = '<C-l>' " Static highlighting let g:CCTreeKeySaveWindow = '<C-\>y' let g:CCTreeKeyToggleWindow = '<C-\>w' let g:CCTreeKeyCompressTree = 'zs' " Compress call-tree let g:CCTreeKeyDepthPlus = '<C-\>=' let g:CCTreeKeyDepthMinus = '<C-\>-' < ============================================================================== FEATURES *CCTree-features* 5.1. Symbol database~ *CCTree-usage* Build cscope database, for example: > cscope -b -i cscope.files [Tip: add -c option to build uncompressed databases for faster load speeds] Load database~ > :CCTreeLoadDB < (Please note that it might take a while depending on the database size) A database name, i.e., my_cscope.out, can be specified with the command. If not provided, a prompt will ask for the filename; default is cscope.out. Unload database ~ > :CCTreeUnLoadDB < Append database~ > :CCTreeAppendDB < Allows multiple cscope files to be loaded and cross-referenced Illustration: > :CCTreeAppendDB ./cscope.out :CCTreeAppendDB ./dir1/cscope.out :CCTreeAppendDB ./dir2/cscope.out < A database name, i.e., my_cscope.out, can be specified with the command. If not provided, a prompt will ask for the filename; default is cscope.out. FASTER DATABASE LOADING *CCTree-fast-loading* Save native Xref Db~ > :CCTreeSaveXRefDb cctree.out < This command will save the cross-referenced symbols currently loaded into memory into a serialized format for faster loading. Load native XRef Db~ > :CCTreeLoadXRefDb cctree.out < This command will load cross-referenced symbols from the previously saved native format database. ccglue~ *CCTree-ccglue* Check out the ccglue project at http://ccglue.sourceforge.net for an external tool that can build cctree-compatible xref databases. 5.2. Exploring source-code~ *CCTree-explore-source* Get reverse call tree for symbol <C-\>< > :CCTreeTraceReverse <symbolname> < Get forward call tree for symbol <C-\>> > :CCTreeTraceForward <symbolname> < Increase depth of tree and update <C-\>= > :CCTreeRecurseDepthPlus < Decrease depth of tree and update <C-\>- > :CCTreeRecurseDepthMinus < 5.3. Preview Window~ *CCTree-preview-window* Open symbol in other window <CR> Preview symbol in other window <Ctrl-P> 5.4. Syntax Coloring~ *CCTree-Syntax* CCTreeHiXXXX allows dynamic highlighting of the call-tree. To observe the effect, move the cursor to the function to highlight the current call-tree. This option can be turned off using the setting, *CCTreeHilightCallTree* . For faster highlighting, the value of 'updatetime' can be changed. 5.5 Support for large database files~ *CCTree-LargeDatabase* *CCTree-LargeFile* Vimscript does not have an API for reading files line-by-line. This becomes a problem when parsing large databases. CCTree can overcome the limitation using an external utility (i.e., GNU coreutils: split) or VimScript's perl interpreter interface (:version must indicate +perl) 5.5.1 Using GNU Coreutils (split/cat)~ *CCTree-Tools-split* *CCTree-Tools-cat* The following settings are tailored to suit GNU coreutils split; the default settings should work with no changes on typical linux/unix distros. Monopoly OSes will require installation of unixutils or equivalent. External command is setup with the following parameters~ > let g:CCTreeSplitProgCmd = 'PROG_SPLIT SPLIT_OPT SPLIT_SIZE IN_FILE OUT_FILE_PREFIX' < Break-down of individual parameters~ The split utility is assumed to be on the path; otherwise, specify full path g:CCTreeSplitProg = 'split' Option for splitting files (-C or -l)~ > let g:CCTreeSplitProgOption = '-C' < If split program does not support -C, then this parameter must be set to the number of lines in the split files > let g:CCTreeDbFileSplitLines = -1 < Largest filesize Vimscript can handle; file sizes greater than this will be temporarily split > let g:CCTreeDbFileMaxSize = 40000000 (40 Mbytes) < Sample system command~ Typical: > split -C 40000000 inputFile outputFilePrefix < When g:CCTreeDbFileSplitLines is set to 10000 (-C options will be ignored) > split -l 10000 inputFile outputFilePrefix < *CCTree-Tools-Perl* *CCTree-Tools-Perl-LargeFile* Enabling perl interface~ By default, perl usage is disabled. Set > let g:CCTreeUsePerl = 1 < to enable the perl interface. Perl interface is typically faster than native Vimscript. This option can be used independent of the file size For more info on setting up perl interface :help |perl-using| or :help |perl-dynamic| 5.6. Miscellaneous *CCTree-Miscellaneous* UTF-8 usage *CCTree-UTF8-Symbols* UTF-8 symbols should work fine on the majority of X11 systems; however, some terminals might cause problems. To use symbols for drawing the tree, this option can be enabled. > let g:CCTreeUseUTF8Symbols = 1 < The options interface (CCTreeOptsxxx) can be used to modify options on-the-fly. ============================================================================== 6. Limitations~ *CCTree-limitations* The following are known limitations: Basic Symbol Processing: (1) The accuracy of the call-tree will only be as good as the cscope database generation. (NOTE: Different flavors of Cscope have some known limitations due to the lexical analysis engine. This results in incorrectly identified function blocks, etc.) Enhanced Symbol Processing: (1) Cscope does not mark-up nameless enums correctly; hence, CCTree cannot recognize nameless enum symbols. ============================================================================== 7. FAQ~ *CCTree-faq* + I see strange characters "!#@" on my screen when dynamic highlighting is enabled. Why do I see them? Check :hi ignore. You will see something like hi ignore ctermfg=white guifg=bg For console, white must be your background color; for GUI, guifg must be set to bg. ============================================================================== 8. History~ *CCTree-history* Version 1.51: May 18, 2011 1. Robust error reporting when external (split/cat) utils fail Version 1.50: May 6, 2011 1. Support cross-referencing of global variables, macros, enums, and typedefs. Version 1.40: April 22, 2011 1. Maintain order of functions called during forward tracing Version 1.39: April 18, 2011 1. Use +Conceal feature for highlighting (only Vim 7.3) Version 1.33: April 5, 2011 1. Load and trace CCTree native XRefDb directly from disk 2. Fix AppendDB command when 'ignorecase' is set Version 1.26: March 28, 2011 1. Fix macro cross-referencing limitation 2. Correct native xref file format Version 1.21: March 21, 2011 1. Support serialization of loaded cscope databases (for faster loading) Version 1.07: March 09, 2011 1. Fix new keymaps incorrectly applied to buffer 2. CCTreeOptsToggle command for toggling options Version 1.04: March 06, 2011 1. Customization for key mappings 2. Dynamic configuration of UI variables 3. Folding long call-trees to show current path dynamically Version 1.01: March 04, 2011 1. Make UTF-8 symbols for tree optional Version 1.00: March 02, 2011 1. Staging release for upcoming features - Complete refactoring of code to take advantage of VimScript's OO features 2. Faster decompression of symbols 3. Display related changes - Use of unicode symbols for tree 4. Bugfixes related to multi-database loading Version 0.90: February 18, 2011 1. Support for large databases using external split utility or perl interface Version 0.85: February 9, 2011 1. Significant increase in database loading and decompression speeds Version 0.80: February 4, 2011 1. Reduce memory usage by removing unused xref symbols Version 0.75: June 23, 2010 1. Support for saving CCTree preview window; multiple CCTree windows can now be open ersion 0.71: May 11, 2010 1. Fix script bug Version 0.70: May 8, 2010 1. Functionality to load multiple cscope databases Version 0.65: July 12, 2009 1. Toggle preview window Version 0.61: December 24, 2008 1. Fixed bug when processing include files 2. Remove 'set ruler' option Version 0.60: November 26, 2008 1. Added support for source-file dependency tree Version 0.50: October 17, 2008 1. Optimizations for compact memory foot-print and improved compressed-database load speeds Version 0.41: October 6, 2008 1. Minor fix: Compressed cscope databases will load incorrectly if encoding is not 8-bit Version 0.4: September 28, 2008 1. Rewrite of display-related code 2. New syntax hightlighting 3. Dynamic highlighting for call-trees 4. Support for new window modes (vertical, horizontal) 5. New display format option for compact or wide call-trees 6. Preview window fix Version 0.3: September 21, 2008 1. Support compressed cscope databases 2. Display window related bugs fixed 3. More intuitive display and folding capabilities Version 0.2: September 12, 2008 (Patches from Yegappan Lakshmanan, thanks!) 1. Support for using the plugin in Vi-compatible mode 2. Filtering out unwanted lines before processing the db 3. Command-line completion for the commands 4. Using the cscope db from any directory Version 0.1: August 31,2008 1. Cross-referencing support for only functions and macros (Note: Functions inside macro definitions will be incorrectly attributed to the top level calling function) ============================================================================== 9. Thanks~ *CCTree-thanks* Qaiser Durrani (ver 1.51 -- Reporting issues with SunOS) Ben Fritz (ver 1.39 -- Suggestion/Testing for conceal feature) Ben Fritz (ver 1.26 -- Bug report) Frank Chang (ver 1.0x -- testing/UI enhancement ideas/bug fixes) Arun Chaganty/Timo Tiefel (Ver 0.60 -- bug report) Michael Wookey (Ver 0.40 -- Testing/bug report/patches) Yegappan Lakshmanan (Ver 0.20 -- Patches) The Vim Community, ofcourse :) vim:tw=78:fo=tcq2:isk=!-~,^*,^\|,^\":ts=8:ft=help:norl: