docs, src: fixing man page and usage text readability
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docs/dj.1
28
docs/dj.1
@ -15,13 +15,13 @@ dj
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.RB [ -a\ byte ]
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.RB [ -a\ byte ]
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.RB [ -c\ count ]
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.RB [ -c\ count ]
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.RB [ -i\ input_file ]
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.RB [ -i\ file ]
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.RB [ -b\ input_block_size ]
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.RB [ -b\ block_size ]
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.RB [ -s\ input_offset ]
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.RB [ -s\ offset ]
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.RB [ -o\ output_file ]
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.RB [ -o\ file ]
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.RB [ -B\ output_block_size ]
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.RB [ -B\ block_size ]
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.RB [ -S\ output_offset ]
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.RB [ -S\ offset ]
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.\"
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.\"
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.SH DESCRIPTION
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.SH DESCRIPTION
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@ -39,25 +39,25 @@ immediately subsequent to the specified byte.
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.\"
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.\"
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.SH OPTIONS
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.SH OPTIONS
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.IP \fB-i\fP
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.IP \fB-i\fP\ \fIfile\fP
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Takes a file path as an argument and opens it for use as an input.
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Takes a file path as an argument and opens it for use as an input.
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.IP \fB-b\fP
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.IP \fB-b\fP\ \fIblock_size\fP
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Takes a numeric argument as the size in bytes of the input buffer, the default
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Takes a numeric argument as the size in bytes of the input buffer, the default
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being 1024.
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being 1024.
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.IP \fB-s\fP
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.IP \fB-s\fP\ \fIoffset\fP
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Takes a numeric argument as the number of bytes to skip into the input
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Takes a numeric argument as the number of bytes to skip into the input
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before starting to read. If the standard input is used, bytes read to this point
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before starting to read. If the standard input is used, bytes read to this point
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are discarded.
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are discarded.
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.IP \fB-o\fP
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.IP \fB-o\fP\ \fIfile\fP
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Takes a file path as an argument and opens it for use as an output.
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Takes a file path as an argument and opens it for use as an output.
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.IP \fB-B\fP
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.IP \fB-B\fP\ \fIblock_size\fP
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Does the same as
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Does the same as
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.B -b
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.B -b
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but for the output buffer.
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but for the output buffer.
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.IP \fB-S\fP
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.IP \fB-S\fP\ \fIoffset\fP
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Seeks a number of bytes through the output before starting to write from
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Seeks a number of bytes through the output before starting to write from
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the input. If the output is a stream, null characters are printed.
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the input. If the output is a stream, null characters are printed.
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.IP \fB-a\fP
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.IP \fB-a\fP\ \fIbyte\fP
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Accepts a single literal byte with which the input buffer is padded in the event
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Accepts a single literal byte with which the input buffer is padded in the event
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of an incomplete read from the input file.
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of an incomplete read from the input file.
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.IP \fB-A\fP
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.IP \fB-A\fP
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@ -65,7 +65,7 @@ Specifying this option pads the input buffer with null bytes in the event of an
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incomplete read. This is equivalent to specifying
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incomplete read. This is equivalent to specifying
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.B -a
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.B -a
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with a null byte instead of a character.
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with a null byte instead of a character.
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.IP \fB-c\fP
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.IP \fB-c\fP\ \fIcount\fP
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Specifies a number of reads to make. The default is 0, in which case the
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Specifies a number of reads to make. The default is 0, in which case the
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input is read until a partial or empty read is made.
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input is read until a partial or empty read is made.
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.IP \fB-d\fP
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.IP \fB-d\fP
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@ -22,7 +22,7 @@ Performs operations on specified fields in data read from the standard input.
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.\"
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.\"
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.SH OPTIONS
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.SH OPTIONS
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.IP \fB-d\fP
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.IP \fB-d\fP\ \fIdelimiter\fP
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Sets a delimiter by which the input data will be split into fields. The default
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Sets a delimiter by which the input data will be split into fields. The default
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is an ASCII record separator.
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is an ASCII record separator.
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.\"
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.\"
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@ -24,10 +24,10 @@ Catenate input files and write them to the start of each output file or stream.
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Opens subsequent outputs for appending rather than updating.
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Opens subsequent outputs for appending rather than updating.
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.IP \fB-e\fP
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.IP \fB-e\fP
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Use the standard error as an output.
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Use the standard error as an output.
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.IP \fB-i\fP
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.IP \fB-i\fP\ \fIinput\fP
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Opens a path as an input. If one or more of the input files is \(lq-\(rq or if
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Opens a path as an input. If one or more of the input files is \(lq-\(rq or if
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no inputs are specified, the standard input shall be used.
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no inputs are specified, the standard input shall be used.
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.IP \fB-o\fP
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.IP \fB-o\fP\ \fIoutput\fP
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Opens a path as an output. If one or more of the output files is \(lq-\(rq or if
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Opens a path as an output. If one or more of the output files is \(lq-\(rq or if
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no outputs are specified, the standard output shall be used.
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no outputs are specified, the standard output shall be used.
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.IP \fB-u\fP
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.IP \fB-u\fP
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@ -22,7 +22,7 @@ Swap the latter and former halves of a block of bytes.
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.IP \fB-f\fP
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.IP \fB-f\fP
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Ignore SIGINT signal.
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Ignore SIGINT signal.
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.IP \fB-w\fP
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.IP \fB-w\fP\ \fIword_size\fP
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Configures the word size; that is, the size in bytes of the block size on which
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Configures the word size; that is, the size in bytes of the block size on which
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to operate. The default word size is 2. The word size must be cleanly divisible
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to operate. The default word size is 2. The word size must be cleanly divisible
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by 2, otherwise the block of bytes being processed can\(cqt be halved.
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by 2, otherwise the block of bytes being processed can\(cqt be halved.
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4
src/dj.c
4
src/dj.c
@ -314,8 +314,8 @@ static int
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usage(void){
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usage(void){
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fprintf(stderr, "Usage: %s [-AdfHqQ] [-a byte] [-c count]\n"
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fprintf(stderr, "Usage: %s [-AdfHqQ] [-a byte] [-c count]\n"
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"\t[-i input_file] [-b input_block_size] [-s input_offset]\n"
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"\t[-i file] [-b block_size] [-s offset]\n"
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"\t[-o output_file] [-B output_block_size] [-S output_offset]\n",
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"\t[-o file] [-B block_size] [-S offset]\n",
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program_name);
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program_name);
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return EX_USAGE;
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return EX_USAGE;
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