Csope

Fork of Cscope, with various improvements, because cscope is good and shall not be forgotten. While the original's mainentence seems abandoned and as far as I can tell you need a PhD in autoconf to compile the latest version, Csope is alive and well.

Usacases

Csope shines at exploring stranger and obsecure code bases due to its TUI. It sometimes gets mislabeled as a code navigation tool, but the original documentation describes it best as a “code browsing tool”. Many tools can jump you to a definition or grep for patterns, but Csope is unqie in that it allows for those and many other functionalities while providing you with a very comprehansible list of all results, ready to fire up your editor at just the spot. An example of its excelence is this project. The Cscope codebase used to be a total mess, fixing it would have been a lost cause, if not for Cscope itself. Well, Csope now.

Demo

TODO: fill in

Before/After

TODO: fill in

Interface

            <-- Tab -->
  +------------Message-------------+           +--------------------------------+
A |+--------------+---------------+|           |+------------------------------+|
| || Input Window | Result window ||           ||                              ||
| |+--------------+               ||     ?     ||                              ||
  || Mode  Window |               ||   ---->   ||            Help              ||
% ||              |               ||   <----   ||                              ||
  ||              |               ||    ...    ||                              ||
| ||              |               ||           ||                              ||
| ||              |               ||           ||                              ||
V |+--------------+---------------+|           |+------------------------------+|
  +-----------Tool Tips------------+           +--------------------------------+

Improvements/Changes

User side

• renamed the program, because “cscope” is annoying to type
• improved gui /pending/
• GNU Readline integration (ie. VI/EMACS mode, command history) /pending/

To the code

• nuked autoconf, replaced with single Makefile
• reorganized main()
• encapsulated changes to the TUI into display.c
• removed “scanner.l” which seems to be an anchient version (and redundant copy) of “fscanner.l” forgotten by all
• removed macro hell put in place to allow compiling on a dead badger
• replaced repeated inline #ifdef KEY_*-s with guaranteed definitions
• removed random commets giving tips for and refering to specific issues
• use stdbool instead of YES/NO macros
• saved kilobytes by stripping trailing whitespace
• FILE* refsfound used to be rewind()-ed everytime the reads were not sequencial

Project structure /probably move to documentation/

Component	Purpose
main.c	generic init functions, main() and primary event loops (and junk)
display.c	all functions directly dealing with NCurses
input.c	top layer of functions dealing with user input; migth dispatch to readline
globals.h	an inherited curse; global var/prototype hell
readline.c	all functions directly dealing with GNU Readline; responsible for line editing in input mode
help.c	all functions dealing with help messages

TODO /move soon/

• recursive macro function to assign KEY_* default values; look for a new and shiny preprocessor?
• sort out constants.h
• scrollbar() uses magic int literals?
• Handle unused parameters gracefully (#define UNUSED(x) (void)(x))
• Ordering function declarations in global.h by alpha order is not smart
• lineflagafterfile is stupid
• library.h...; “private library”, in a program using 90 globals; ffs

Original

• Display the current case mode (^C) onscreen
• emacs like key bindings ^S for searching (^Y) Up/dwn Arrow support Next/Prev field. ?? Inline editing on Input fields ( ??^B/^F ) ^X^C to quit ( ^Q ??) Pagdwn/PageUp/+/-
• Same capabilities as interactive in non interactive (one shot) mode
• Provide some how-do-I-use-this-thing doc.
• Replace invlib.[ch] by real database. Failing that, at least sanitize it.

BUGS

• Changing text double frees: free(): double free detected in tcache 2 Aborted
• Changing text can crash without replacing text and leaving the console ncursed

Future features / contributor wishlist

• providing support for other languages by integrating new lexers (e.g. ctag's)