text-replace

Perform simple replacements in a text file, using a list of search/replace pairs. The search for strings to replace is performed left-to-right, preferring longer matches to shorter ones. All streams are assumed to be UTF-8 encoded.

Command-line options

• -h, --help - Show help text
• -i, --in-file FILEPATH - Input file to read (optional, defaults to stdin)
• -o, --out-file FILEPATH - Output file to write (optional, defaults to stdout)
• -m, --mapping MAPPING - A list of search/replace pairs, separated by any of the delimiters
• -f, --map-file FILEPATH - A file containing a list of search/replace pairs, separated by any of the delimiters
• -d, --delimiter DELIMITER - Add a delimiter that separates search/replace strings in --mapping and in the contents of --map-file
• -n, --newline-delimiter - Add newline as a delimiter

Examples

text-replace is useful for replacing characters with escape sequences:

$ echo "The (<&&>) operator"        \
    | text-replace --delimiter " "  \
                   --mapping "& &amp; > &gt; < &lt;"
The (&lt;&amp;&amp;&gt;) operator

You can use it to swap strings. In the following example we replace * with ** and vice versa:

$ echo "What *is* going on **here**?"  \
    | text-replace --delimiter " "     \
                   --mapping "* ** ** *"
What **is** going on *here*?

You also have the option to read the input string and replacement list from files, and to write the output to a file:

$ cat input
I am extremely apt to like Haskell once I develop sufficient
aptitude with it.

$ cat replacements
apt -> likely
aptitude -> ability
like -> appreciate

$ text-replace --map-file replacements  \
               --in-file input          \
               --out-file output        \
               --delimiter " -> "       \
               --newline-delimiter

$ cat output
I am extremely likely to appreciate Haskell once I develop
sufficient ability with it.