WRAP
Break Up Long Lines in a File

WRAP is a C++ program which reads a file and makes a copy in which long lines have been broken up.

The user specifies a maximum allowable line length. Any line of text in the input file that is longer than this length is broken into two or more lines, with all but the last of these pieces being exactly the maximum length.

Usage:

wrap old new wrap_length

• old is the file to be modified;
• new is the modified copy of the old file.
• wrap_length is the maximum line length, after which a new line should be forced.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

WRAP is available in a C++ version.

Related Data and Programs:

CR2CRLF, a C++ program which reads a text file and replaces carriage returns by carriage returns + line feeds.

CR2LF, a C++ program which reads a text file and replaces carriage returns by line feeds.

CRRM, a C++ program which reads a text file and writes a copy which has no carriage returns.

DEBLANK, a C++ program which makes a copy of a text file in which blank lines have been removed.

DECOMMENT, a C++ program which makes a copy of a text file which contains no "comment" lines (that begin with "#").

DETROFF, a C++ program which removes from a file every occurrence of the TROFF overprint pair character+backspace, which can make a MAN page printable;

FILUM, a C++ library which performs various operations on files.

REFORMAT, a FORTRAN90 program which reads a file that contains only real values, and writes a copy which has a fixed number of real values on each line.

REWORD, a C++ program which makes a copy of a file in which each line has the same number of "words".

UNCONTROL, a C++ program which makes a copy of a text file which contains no control characters.

WRAP2, a C++ program which wraps long lines in a text file, but which wraps some lines "early", so as to avoid breaking words.

Source Code:

• wrap.cpp, the source code;

Examples and Tests:

• runon.xgl, an XGL file contained in a single LONG line;
• wrapped.xgl, the "wrapped" file.;

List of Routines:

• MAIN is the main program for WRAP.
• HANDLE makes a copy of a file in which no line exceeds a given length.
• S_LEN_TRIM returns the length of a string to the last nonblank.
• S_TO_I4 reads an integer value from a string.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.