Diffs for R Objects

Generate a colorized diff of two R objects for an intuitive visualization of their differences.

See vignettes for details, and for comparisons with standard comparison functions.

Output

If your terminal supports formatting through ANSI escape sequences, diffobj will output colored diffs to the terminal. Otherwise, output will be colored with HTML/CSS and sent to the IDE viewport or to your browser. diffobj comes with several built-in color schemes that can be further customized. Some examples:

Installation

This package is available on CRAN.

install.packages("diffobj")
vignette("diffobj", package="diffobj")

Development

Go to Github to report issues or if you are interested in development versions of this package. The master branch is considered stable. If you want to submit a PR please do so against the development branch.

tools::Rdiff
Daff diff, patch and merge for data.frames
GNU diff

News

diffobj

v0.1.6

#87: diffobj is now GPL (>=2) instead of GPL-3.
#81: Better handling of mixed UTF-8 / ASCII strings, reported by jennybc
#88: correctly handle trimming when empty lists are involved, reported by wch
#77: diffObj now favors dispatching to diffPrint unless diffPrint output is large
#82: diffChr and ses now treat NA as "NA" (needed with change in nchar(NA) in base R)
#85: Improved alignment of unwrapped atomic vector diffs
#83: Improve pager auto detection (note now ANSI output is only allowed by default if terminal supports ANSI colors and the system pager is less, see ?Pager for details)
#92, #80, #45: basic implementation of S4 guidelines and trimming (full resolution eventually with #33)
#84: simplify how to call diffChr for improved performance, including "optimization" of convert.hz.whitespace.
#64: fix line limit in corner case
More robust handling of external diff* methods and of how diffObj calls diffStr and diffPrint

v0.1.5

#71: Buggy diffs b/w data frames when one has sequential row numbers and the other does not, loosely related to #38
#69: Improve performance on outputs with large print/show output, and other assorted minor optimizations
#72: Warn when style parameter overrides other user supplied parameters
#70: Improve word contrast in YB HTML mode
#63: Show all.equal output when objects are not all.equal but there are no visible differences
Add Mean Relative Indifference vignette and update vignette styling

v0.1.4

#67: Fix CRAN Binaries
Clarified that C code is heavily modified and incompatible with original libmba implementation

v0.1.3

First version on CRAN
#51: use RStudio viewport to display HTML diffs when running in RStudio, as per Noam Ross
#54: #55, scale HTML output to viewport width (see ?Style)
#53: default term colors computed on run instead of on package load
#56: disable wrap for HTML output
HTML output now captured with default width 80 since there is no explicit relationship between HTML viewport width and getOption("width")
The style parameter now accepts lists to use as instantiation arguments for Style objects (see ?Style)
Fix subtle rendering and formatting application flaws
Switch Travis shields to SVG per Gábor Csárdi
Improve in-hunk alignment of partially matching lines
Compile with -pedantic, fix related warnings Arun
Improved coverage and more robust testing
Several internal structure changes to accommodate improvements