Awesome

fsrc (fast code search)

This tool is meant to search large codebases for text snippets. It uses a threadpool to open and search in all text files in the current folder. The string search is sse2 optimized code from mischasan.
On macOS with Mx CPUs, sse2neon is used to map SSE2 to ARM.

Usage

user@home:/usr/include/boost$ fsrc
Usage  : fsrc [options] term
Options:
  -d [ --dir ] arg      Search folder
  -e [ --ext ] arg      Search only in files with extension <arg>, equiv. to
                        --glob '*.ext'
  -g [ --glob ] arg     Search only in files filtered by <arg> glob, e.g.
                        '*.txt'; overrides --ext
  -h [ --help ]         Help
  --html                open web page with results
  -i [ --ignore-case ]  Case insensitive search
  --no-git              Disable search with 'git ls-files'
  --no-colors           Disable colorized output
  --no-piped            Disable piped output
  --no-uri              Print w/out file:// prefix
  --only-files          Only print filenames
  --piped               Enable piped output
  -q [ --quiet ]        only print status
  -r [ --regex ]        Regex search (slower)

Build : v0.27 from Jan 29 2023
Web   : https://github.com/elsamuko/fsrc
user@home:/usr/include/boost$ fsrc filesystem
Searching for "filesystem" in folder:

...
/usr/include/boost/spirit/home/x3/support/utility/testing.hpp
L  11 : #include <boost/filesystem.hpp>
L  12 : #include <boost/filesystem/fstream.hpp>
L  16 :     namespace fs = boost::filesystem;
L 205 :         catch (const fs::filesystem_error& ex)
L 215 :         boost::filesystem::ifstream file(p);

Times: Recurse 22 ms, Read 83 ms, Search 14 ms, Collect 0 ms, Print 28 ms
Found 449 matches in 68/12520 files (108658 kB) in 34 ms
user@home:/usr/include/boost$

Behaviour

• If there is a .git folder in the main search folder, it uses git ls-files to get all files to search in
• a .git folder is never searched
• hidden folders and files are searched
• binaries are 'detected', if they contain two binary 0's within the first 100 bytes or are PDF or PostScript files.
• all option-less arguments are the search term
• folders are set with -d
• when printing a match in a long line, only 100 chars context are printed, which makes searching in minified sources easier
• with --html you get the results as web page
• with --glob you can filter filenames by glob

Architecture

fsrc has a simple architecture: https://elsamuko.github.io/fsrc/architecture.html

Building

Windows

You need VS2022 and cygwin.

Linux

You need g++ 11 or newer.

macOS

You need XCode 14 or later.

General

You need bash, cmake, curl and zip available from the command line.
Run ./deploy.sh to compile the current source and package it as zip file.
Run ./scripts/build_boost.sh to build boost deps.
You need Qt/qmake to open the fscr.pro build file.