Merge branch 'main' into testing
This commit is contained in:
commit
7939985c98
GPG Key ID:
34C0543BBB6AF81B
13
Makefile
13
Makefile
@ -16,9 +16,12 @@
|
||||
DESTDIR ?= dist
|
||||
PREFIX ?= /usr/local
|
||||
|
||||
MANDIR != [ $(PREFIX) = / ] && printf '/usr/share/man\n' \
|
||||
# normalized prefix
|
||||
PREFIX_N != (test -d $(PREFIX) && [ '-' != $(PREFIX) ] \
|
||||
&& CDPATH= cd -P -- $(PREFIX) && pwd -P)
|
||||
MANDIR != [ $(PREFIX_N) = / ] && printf '/usr/share/man\n' \
|
||||
|| printf '/share/man\n'
|
||||
SYSEXITS != printf '\043include <sysexits.h>\n' | cpp -M - | sed 's/ /\n/g' \
|
||||
SYSEXITS != printf '\043include <sysexits.h>\n' | cpp -M - | tr ' ' '\n' \
|
||||
| sed -n 's/sysexits\.h//p' || printf 'include\n'
|
||||
|
||||
CC ?= cc
|
||||
@ -29,7 +32,7 @@ RUSTLIBS = --extern getopt=build/o/libgetopt.rlib \
|
||||
CFLAGS += -I$(SYSEXITS)
|
||||
|
||||
.PHONY: all
|
||||
all: docs dj false fop hru intcmp mm npc rpn scrut str strcmp swab true
|
||||
all: dj false fop hru intcmp mm npc rpn scrut str strcmp swab true
|
||||
|
||||
# keep build/include until bindgen(1) has stdin support
|
||||
# https://github.com/rust-lang/rust-bindgen/issues/2703
|
||||
@ -40,8 +43,8 @@ build:
|
||||
clean:
|
||||
rm -rf build dist
|
||||
|
||||
dist: all
|
||||
mkdir -p $(DESTDIR)/$(PREFIX)/bin $(DESTDIR)/$(PREFIX)/share/man/man1
|
||||
dist: all docs
|
||||
mkdir -p $(DESTDIR)/$(PREFIX)/bin $(DESTDIR)/$(PREFIX)/$(MANDIR)/man1
|
||||
cp build/bin/* $(DESTDIR)/$(PREFIX)/bin
|
||||
cp build/docs/*.1 $(DESTDIR)/$(PREFIX)/$(MANDIR)/man1
|
||||
|
||||
|
||||
165
docs/dj.1
165
docs/dj.1
@ -4,32 +4,24 @@
|
||||
.\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
|
||||
.\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
|
||||
.\"
|
||||
.TH DJ 1 2024-06-17 "Harakit X.X.X"
|
||||
.TH DJ 1 2024-07-03 "Harakit X.X.X"
|
||||
.SH NAME
|
||||
dj \(en disk jockey
|
||||
.\"
|
||||
.SH SYNOPSIS
|
||||
|
||||
dj
|
||||
.RB ( -AdHnq )
|
||||
.RB ( -a
|
||||
.RB [ byte ])
|
||||
.RB ( -c
|
||||
.RB [ count ])
|
||||
.RB [ -Hn ]
|
||||
.RB [ -a\ byte ]
|
||||
.RB [ -c\ count ]
|
||||
|
||||
.RB ( -i
|
||||
[\fBinput file\fP])
|
||||
.RB ( -b
|
||||
[\fBinput block size\fP])
|
||||
.RB ( -s
|
||||
[\fBinput offset\fP])
|
||||
.RB [ -i\ file ]
|
||||
.RB [ -b\ block_size ]
|
||||
.RB [ -s\ offset ]
|
||||
|
||||
.RB ( -o
|
||||
[\fBoutput file\fP])
|
||||
.RB ( -B
|
||||
[\fBoutput block size\fP])
|
||||
.RB ( -S
|
||||
[\fBoutput offset\fP])
|
||||
.RB [ -o\ file ]
|
||||
.RB [ -B\ block_size ]
|
||||
.RB [ -S\ offset ]
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
@ -42,68 +34,109 @@ respectively. This language is inherited from the
|
||||
.BR dd (1p)
|
||||
utility and used here to decrease ambiguity.
|
||||
|
||||
When seeking or skipping to a byte, writing or reading starts at the byte
|
||||
immediately subsequent to the specified byte.
|
||||
The offset used when skipping or seeking refers to how many bytes are skipped
|
||||
or sought. Running
|
||||
.BR dj (1)
|
||||
with a skip offset of 1 skips one byte into the input and reads from the second
|
||||
byte onwards. A programmer may think of a file as a zero-indexed array of
|
||||
bytes; in this analogy, the offset given is the index of the byte at which to
|
||||
start reading or writing.
|
||||
.\"
|
||||
.SH OPTIONS
|
||||
|
||||
.IP \fB-i\fP
|
||||
.IP \fB-i\fP\ \fIfile\fP
|
||||
Takes a file path as an argument and opens it for use as an input.
|
||||
.IP \fB-b\fP
|
||||
.IP \fB-b\fP\ \fIblock_size\fP
|
||||
Takes a numeric argument as the size in bytes of the input buffer, the default
|
||||
being 1024.
|
||||
.IP \fB-s\fP
|
||||
Takes a numeric argument as the number of bytes to skip into the input
|
||||
before starting to read. If the standard input is used, bytes read to this point
|
||||
are discarded.
|
||||
Takes a numeric argument as the index of the byte at which reading will
|
||||
commence; \(lqskips\(rq that number of bytes. If the standard input is used,
|
||||
bytes read to this point are discarded.
|
||||
.IP \fB-o\fP
|
||||
Takes a file path as an argument and opens it for use as an output.
|
||||
.IP \fB-B\fP
|
||||
.IP \fB-B\fP\ \fIblock_size\fP
|
||||
Does the same as
|
||||
.B -b
|
||||
but for the output buffer.
|
||||
.IP \fB-S\fP
|
||||
Seeks a number of bytes through the output before starting to write from
|
||||
the input. If the output is a stream, null characters are printed.
|
||||
Takes a numeric argument as the index of the byte at which writing will
|
||||
commence; \(lqseeks\(rq that number of bytes. If the standard output is used,
|
||||
null characters are printed.
|
||||
.IP \fB-a\fP
|
||||
Accepts a single literal byte with which the input buffer is padded in the event
|
||||
of an incomplete read from the input file.
|
||||
.IP \fB-A\fP
|
||||
Specifying this option pads the input buffer with null bytes in the event of an
|
||||
incomplete read. This is equivalent to specifying
|
||||
.B -a
|
||||
with a null byte instead of a character.
|
||||
of an incomplete read from the input file. If the option argument is empty, the
|
||||
null byte is used.
|
||||
.IP \fB-c\fP
|
||||
Specifies a number of reads to make. The default is 0, in which case the
|
||||
input is read until a partial or empty read is made.
|
||||
.IP \fB-d\fP
|
||||
Prints invocation information before program execution as described in the
|
||||
DIAGNOSTICS section. Each invocation increments the debug level of the
|
||||
program.
|
||||
.IP \fB-H\fP
|
||||
Prints diagnostics messages in a human-readable manner as described in the
|
||||
Prints diagnostic messages in a human-readable manner as described in the
|
||||
DIAGNOSTICS section.
|
||||
.IP \fB-n\fP
|
||||
Retries failed reads once before exiting.
|
||||
.IP \fB-q\fP
|
||||
Suppresses error messages which print when a read or write is partial or
|
||||
empty. Each invocation decrements the debug level of the program.
|
||||
.\"
|
||||
.SH STANDARD INPUT
|
||||
|
||||
The standard input shall be used as an input if no inputs are specified or if
|
||||
one or more of the input files is \(lq-\(rq.
|
||||
input file is \(lq-\(rq.
|
||||
.\"
|
||||
.SH STANDARD OUTPUT
|
||||
The standard output shall be used as an output if no inputs are specified or if
|
||||
one or more of the input files is \(lq-\(rq.
|
||||
the output file is \(lq-\(rq.
|
||||
.\"
|
||||
.SH EXAMPLES
|
||||
|
||||
The following
|
||||
.BR sh (1p)
|
||||
line:
|
||||
|
||||
.RS
|
||||
printf 'Hello, world!\(rsn' | dj -c 1 -b 7 -s 7 2>/dev/null
|
||||
.RE
|
||||
|
||||
Produces the following output:
|
||||
|
||||
.RS
|
||||
world!
|
||||
.RE
|
||||
|
||||
The following
|
||||
.BR sh (1p)
|
||||
lines run sequentially:
|
||||
|
||||
.RS
|
||||
tr '\(rs0' 0 </dev/zero | dj -c 1 -b 6 -o hello.txt
|
||||
|
||||
tr '\(rs0' H </dev/zero | dj -c 1 -b 1 -o hello.txt
|
||||
|
||||
tr '\(rs0' e </dev/zero | dj -c 1 -b 1 -o hello.txt -S 1
|
||||
|
||||
tr '\(rs0' l </dev/zero | dj -c 1 -b 2 -o hello.txt -S 2
|
||||
|
||||
tr '\(rs0' o </dev/zero | dj -c 1 -b 1 -o hello.txt -S 4
|
||||
|
||||
tr '\(rs0' '\(rsn' </dev/zero | dj -c 1 -b 1 -o hello.txt -S 5
|
||||
|
||||
dj -i hello.txt
|
||||
.RE
|
||||
|
||||
Produce the following output:
|
||||
|
||||
.RS
|
||||
Hello
|
||||
.RE
|
||||
|
||||
It may be particularly illuminating to print the contents of the example
|
||||
.B hello.txt
|
||||
after each
|
||||
.BR dj (1)
|
||||
invocation.
|
||||
.\"
|
||||
.SH DIAGNOSTICS
|
||||
|
||||
On a partial or empty read, unless the
|
||||
.B -q
|
||||
option is specified, a diagnostic message is printed. Then, the program exits
|
||||
unless the
|
||||
On a partial or empty read, a diagnostic message is printed. Then, the program
|
||||
exits unless the
|
||||
.B -n
|
||||
option is specified.
|
||||
|
||||
@ -128,20 +161,6 @@ option may be specified. In this event, the following format is used instead:
|
||||
{ASCII line feed}
|
||||
.RE
|
||||
|
||||
If the
|
||||
.B -d
|
||||
option is specified, debug information will be printed at the beginning of
|
||||
execution. This output contains information regarding how the program was
|
||||
invoked. The following example is the result of running the program with
|
||||
.B -d
|
||||
as the only argument:
|
||||
|
||||
.RS
|
||||
argv0=dj
|
||||
in=<stdin> ibs=1024 skip=0 align=ff count=0
|
||||
out=<stdout> obs=1024 seek=0 debug= 3 noerror=0
|
||||
.RE
|
||||
|
||||
In non-recoverable errors that don\(cqt pertain to the read-write cycle, a
|
||||
diagnostic message is printed and the program exits with the appropriate
|
||||
.BR sysexits.h (3)
|
||||
@ -156,17 +175,26 @@ is specified along with the
|
||||
option and a count, actual byte output is the product of the count and the input
|
||||
block size and therefore may be lower than expected. If the
|
||||
.B -a
|
||||
or
|
||||
.B -A
|
||||
options are specified, this could make written data nonsensical.
|
||||
option is specified, this could make written data nonsensical.
|
||||
.\"
|
||||
.SH CAVEATS
|
||||
|
||||
Existing files are not truncated on ouput and are instead overwritten.
|
||||
|
||||
Many lowercase options have capitalized variants and vice-versa which can be
|
||||
confusing. Capitalized options tend to affect output or are more intense
|
||||
versions of lowercase options.
|
||||
The options
|
||||
.B -b
|
||||
and
|
||||
.B -B
|
||||
could be confused for each other, and so could
|
||||
.B -s
|
||||
and
|
||||
.BR -S .
|
||||
The lowercase option affects input and the capitalized option affects output.
|
||||
|
||||
The skipped or sought bytes while processing irregular files, such as streams,
|
||||
are reported in the diagnostic output, because they were actually read or
|
||||
written. This is as opposed to bytes skipped while processing regular files,
|
||||
which are not reported.
|
||||
.\"
|
||||
.SH RATIONALE
|
||||
|
||||
@ -187,3 +215,4 @@ Copyright \(co 2023 DTB. License AGPLv3+: GNU AGPL version 3 or later
|
||||
.\"
|
||||
.SH SEE ALSO
|
||||
.BR dd (1p)
|
||||
.BR lseek (3p)
|
||||
|
||||
@ -22,7 +22,7 @@ Performs operations on specified fields in data read from the standard input.
|
||||
.\"
|
||||
.SH OPTIONS
|
||||
|
||||
.IP \fB-d\fP
|
||||
.IP \fB-d\fP\ \fIdelimiter\fP
|
||||
Sets a delimiter by which the input data will be split into fields. The default
|
||||
is an ASCII record separator.
|
||||
.\"
|
||||
|
||||
@ -11,9 +11,7 @@ intcmp \(en compare integers
|
||||
.SH SYNOPSIS
|
||||
|
||||
intcmp
|
||||
.RB ( -egl )
|
||||
.RB [ integer ]
|
||||
.RB [ integer... ]
|
||||
.RB [ -egl ]\ integer\ integer...
|
||||
.SH DESCRIPTION
|
||||
Compare integers to each other.
|
||||
.\"
|
||||
|
||||
12
docs/mm.1
12
docs/mm.1
@ -10,11 +10,9 @@ mm \(en middleman
|
||||
.SH SYNOPSIS
|
||||
|
||||
mm
|
||||
.RB ( -aenu )
|
||||
.RB ( -i
|
||||
.RB [ input ])
|
||||
.RB ( -o
|
||||
.RB [ output ])
|
||||
.RB [ -aenu ]
|
||||
.RB [ -i\ input ]
|
||||
.RB [ -o\ output ]
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
@ -26,10 +24,10 @@ Catenate input files and write them to the start of each output file or stream.
|
||||
Opens subsequent outputs for appending rather than updating.
|
||||
.IP \fB-e\fP
|
||||
Use the standard error as an output.
|
||||
.IP \fB-i\fP
|
||||
.IP \fB-i\fP\ \fIinput\fP
|
||||
Opens a path as an input. If one or more of the input files is \(lq-\(rq or if
|
||||
no inputs are specified, the standard input shall be used.
|
||||
.IP \fB-o\fP
|
||||
.IP \fB-o\fP\ \fIoutput\fP
|
||||
Opens a path as an output. If one or more of the output files is \(lq-\(rq or if
|
||||
no outputs are specified, the standard output shall be used.
|
||||
.IP \fB-u\fP
|
||||
|
||||
@ -11,7 +11,7 @@ npc \(en show non-printing characters
|
||||
.SH SYNOPSIS
|
||||
|
||||
npc
|
||||
.RB ( -et )
|
||||
.RB [ -et ]
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
|
||||
@ -10,8 +10,8 @@ scrut \(en scrutinize file properties
|
||||
.SH SYNOPSIS
|
||||
|
||||
scrut
|
||||
.RB ( -LSbcdefgkprsuwx )
|
||||
.RB [ file... ]
|
||||
.RB [ -LSbcdefgkprsuwx ]
|
||||
.B file...
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
|
||||
@ -11,8 +11,7 @@ str \(en test string arguments
|
||||
.SH SYNOPSIS
|
||||
|
||||
str
|
||||
.RB [ type ]
|
||||
.RB [ string... ]
|
||||
.B type string...
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
|
||||
@ -11,8 +11,7 @@ strcmp \(en compare strings
|
||||
.SH SYNOPSIS
|
||||
|
||||
strcmp
|
||||
.RM [ string ]
|
||||
.RB [ strings... ]
|
||||
.B string string...
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
|
||||
16
docs/swab.1
16
docs/swab.1
@ -11,11 +11,8 @@ swab \(en swap bytes
|
||||
.SH SYNOPSIS
|
||||
|
||||
swab
|
||||
.RB ( -f )
|
||||
.RB ( -w
|
||||
.R [
|
||||
.B word size
|
||||
.R ])
|
||||
.RB [ -f ]
|
||||
.RB [ -w\ word_size ]
|
||||
.\"
|
||||
.SH DESCRIPTION
|
||||
|
||||
@ -25,11 +22,10 @@ Swap the latter and former halves of a block of bytes.
|
||||
|
||||
.IP \fB-f\fP
|
||||
Ignore SIGINT signal.
|
||||
.IP \fB-w\fP
|
||||
Configures the word size; that is, the size in bytes of the block size
|
||||
on which to operate. The default word size is 2. The word size must be
|
||||
cleanly divisible by 2, otherwise the block of bytes being processed can\(cqt be
|
||||
halved.
|
||||
.IP \fB-w\fP\ \fIword_size\fP
|
||||
Configures the word size; that is, the size in bytes of the block size on which
|
||||
to operate. The default word size is 2. The word size must be cleanly divisible
|
||||
by 2, otherwise the block of bytes being processed can\(cqt be halved.
|
||||
.\"
|
||||
.SH EXAMPLES
|
||||
|
||||
|
||||
556
src/dj.c
556
src/dj.c
@ -16,282 +16,113 @@
|
||||
* along with this program. If not, see https://www.gnu.org/licenses/.
|
||||
*/
|
||||
|
||||
#include <ctype.h> /* isupper(3), tolower(3) */
|
||||
#include <assert.h> /* assert(3) */
|
||||
#include <errno.h> /* errno */
|
||||
#include <fcntl.h> /* open(2) */
|
||||
#include <stdio.h> /* fprintf(3), stderr */
|
||||
#include <stdlib.h> /* free(3), malloc(3), strtol(3), size_t */
|
||||
#include <stdlib.h> /* malloc(3), strtol(3), size_t */
|
||||
#include <string.h> /* memcpy(3), memmove(3), memset(3) */
|
||||
#include <sysexits.h> /* EX_OK, EX_USAGE */
|
||||
#if !defined EX_OK || !defined EX_OSERR || !defined EX_USAGE
|
||||
# include <sysexits.h>
|
||||
#endif
|
||||
#include <unistd.h> /* close(2), getopt(3), lseek(2), read(2), write(2),
|
||||
* optarg, optind, STDIN_FILENO, STDOUT_FILENO */
|
||||
#include <sys/stat.h> /* S_IRGRP, S_IROTH, S_IRUSR, S_IWGRP, S_IWOTH,
|
||||
S_IWUSR */
|
||||
extern int errno;
|
||||
|
||||
char *program_name = "dj";
|
||||
|
||||
/* dj uses two structures that respectively correspond to the reading and
|
||||
* writing ends of its jockeyed "pipe". User-configurable members are noted
|
||||
* with their relevant options. */
|
||||
struct Io{
|
||||
int bs; /* buffer size (-bB) */
|
||||
char *buf; /* buffer */
|
||||
char *fn; /* file name (-io) */
|
||||
size_t bs; /* buffer size (-bB) */
|
||||
size_t bufuse; /* buffer usage */
|
||||
char *buf; /* buffer */
|
||||
int bytes; /* bytes processed */
|
||||
int fd; /* file descriptor */
|
||||
int fl; /* file opening flags */
|
||||
char *fn; /* file name (may be stdin_name or stdout_name) (-io) */
|
||||
int prec; /* partial records processed */
|
||||
int rec; /* records processed */
|
||||
long seek; /* bytes to seek/skip (will be 0 after skippage) (-sS) */
|
||||
} ep[2]; /* "engineered pipe"; also "extended play", for the deejay */
|
||||
size_t bytes; /* bytes processed */
|
||||
size_t prec; /* partial records processed */
|
||||
size_t rec; /* records processed */
|
||||
long seek; /* remaining bytes to seek/skip (-sS) */
|
||||
int error; /* errno */
|
||||
int fd; /* file descriptor */
|
||||
int fl; /* file opening flags */
|
||||
};
|
||||
|
||||
/* Additionally, the following global variables are used to store user options.
|
||||
*/
|
||||
/* To be assigned to main:fmt and used with printio(). */
|
||||
static char *fmt_asv = "%d\037%d\036%d\037%d\035%d\036%d\034";
|
||||
static char *fmt_human = "%d+%d > %d+%d; %d > %d\n";
|
||||
|
||||
/* (-a) */ static int align; /* Only the lower 8b are used but align is
|
||||
* negative if no alignment is being done. */
|
||||
|
||||
/* (-c) */ static int count; /* 0 if dj(1) runs until no more reads are
|
||||
* possible. */
|
||||
|
||||
/* ASCII field separator delimited statistics */
|
||||
static char *fmt_asv = "%d\037%d\036%d\037%d\035%d\036%d\034";
|
||||
/* human-readable statistics */
|
||||
static char *fmt_human = "%d+%d > %d+%d; %d > %d\n";
|
||||
/* pointer to chosen formatting */
|
||||
/* (-H) */ static char *fmt_output; /* fmt_asv (default) or fmt_human (-H) */
|
||||
|
||||
/* (-dq) */ static char debug; /*
|
||||
* -d increments dj -qq | 0 - no diagnostic output whatsoever
|
||||
* -q decrements dj -q | 1 - typical output without
|
||||
* | notifications on partial reads or
|
||||
* | writes
|
||||
* dj | 2 - typical output (default)
|
||||
* dj -d | 3 - verbose status messages */
|
||||
|
||||
/* (-n) */ static char noerror; /* 0 - exits on partial reads or writes
|
||||
* (default)
|
||||
* 1 - retries on partial reads/writes
|
||||
* (-n) */
|
||||
|
||||
/* Non-configurable defaults. */
|
||||
#define bs_default 1024 /* GNU dd(1) default; twice POSIX but a neat 2^10 */
|
||||
static char *program_name = "<no argv[0]>";
|
||||
static char *stdin_name = "<stdin>";
|
||||
static char *stdout_name = "<stdout>";
|
||||
static int read_flags = O_RDONLY; /* These flags are consistent with Busybox */
|
||||
static int write_flags = O_WRONLY | O_CREAT; /* dd(1). */
|
||||
|
||||
/* Macro to set defaults for user-configurable options. */
|
||||
#define setdefaults do{ \
|
||||
align = -1; \
|
||||
count = 0; \
|
||||
debug = 2; \
|
||||
fmt_output = fmt_asv; \
|
||||
noerror = 0; \
|
||||
ep[0].fl = read_flags; \
|
||||
Io_setdefaults(&ep[0]); \
|
||||
ep[1].fl = write_flags; \
|
||||
Io_setdefaults(&ep[1]); }while(0)
|
||||
static int creat_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH
|
||||
| S_IWOTH; /* Consistent with touch(1p). */
|
||||
static int read_flags = O_RDONLY; /* Consistent with Busybox dd(1). */
|
||||
static int write_flags = O_WRONLY | O_CREAT;
|
||||
|
||||
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
|
||||
|
||||
/* Macro to check if fd is a std* file, e.g. stdin. */
|
||||
#define fdisstd(fd) \
|
||||
((fd) == STDIN_FILENO \
|
||||
|| (fd) == STDOUT_FILENO \
|
||||
|| (fd) == STDERR_FILENO)
|
||||
/* Macro to check if fd is stdin or stdout */
|
||||
#define fdisstd(fd) ((fd) == STDIN_FILENO || (fd) == STDOUT_FILENO)
|
||||
|
||||
/* Macro to call the cleanup functions that operate on struct io on the
|
||||
* particular io[2] used in main. Error conditions are not checked because this
|
||||
* is only used when the program is about to terminate (hence its name). */
|
||||
#define terminate(io) do{ \
|
||||
Io_buffree(&(io)[0]); \
|
||||
Io_buffree(&(io)[1]); \
|
||||
Io_fdclose(&(io)[0]); \
|
||||
Io_fdclose(&(io)[1]); }while(0)
|
||||
|
||||
/* Allocates *io's buffer. Returns NULL if unsuccessful. */
|
||||
static void *
|
||||
Io_bufalloc(struct Io *io){
|
||||
|
||||
return (io->buf = malloc(io->bs * (sizeof *io->buf)));
|
||||
}
|
||||
|
||||
/* Frees *io's buffer. Returns io. */
|
||||
static struct Io *
|
||||
Io_buffree(struct Io *io){
|
||||
|
||||
free(io->buf);
|
||||
|
||||
return io;
|
||||
}
|
||||
|
||||
/* Fills the unused portion of io's buffer with padding, updating io->bufuse.
|
||||
* Returns io. */
|
||||
static struct Io *
|
||||
Io_bufrpad(struct Io *io, int padding){
|
||||
|
||||
memset(io->buf + io->bufuse, padding, io->bs - io->bufuse);
|
||||
io->bufuse = io->bs;
|
||||
|
||||
return io;
|
||||
}
|
||||
|
||||
/* Copies from the buffer in src as much as possible to the free space in the
|
||||
* dest buffer, removing the copied units from src and permuting the remaining
|
||||
* units in the src buffer to the start of the buffer, modifying both the src
|
||||
* and dest bufuse and returning dest. */
|
||||
static struct Io*
|
||||
Io_bufxapp(struct Io *dest, struct Io *src){
|
||||
int n;
|
||||
|
||||
n = MIN(src->bufuse, dest->bs - dest->bufuse);
|
||||
memcpy(dest->buf + dest->bufuse, src->buf, n);
|
||||
dest->bufuse += n;
|
||||
memmove(src->buf, src->buf + n, src->bs - n);
|
||||
src->bufuse -= n;
|
||||
|
||||
return dest;
|
||||
}
|
||||
|
||||
/* Copies from the buffer in src to the buffer in dest no more than n units,
|
||||
* removing the copied units from src and permuting the remaining units in the
|
||||
* src buffer to the start of the buffer, modifying both the src and dest
|
||||
* bufuse and returning dest. */
|
||||
static struct Io*
|
||||
Io_bufxfer(struct Io *dest, struct Io *src, int n){
|
||||
|
||||
memcpy(dest->buf, src->buf, (dest->bufuse = n));
|
||||
memmove(src->buf, src->buf + n, (src->bufuse -= n));
|
||||
|
||||
return dest;
|
||||
}
|
||||
|
||||
/* Closes io->fn and returns -1 on error, otherwise io->fd. */
|
||||
static int
|
||||
Io_fdclose(struct Io *io){
|
||||
|
||||
return fdisstd(io->fd)
|
||||
? 0
|
||||
: close(io->fd);
|
||||
}
|
||||
|
||||
/* Opens io->fn and saves the file descriptor into io->fd. Returns io->fd,
|
||||
* which will be -1 if an error occured. */
|
||||
static int
|
||||
Io_fdopen(struct Io *io, char *fn){
|
||||
int fd;
|
||||
|
||||
if((fd = open(fn, io->fl,
|
||||
/* these are the flags used by touch(1p) */
|
||||
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH))
|
||||
!= -1
|
||||
&& Io_fdclose(io) == 0){
|
||||
io->fd = fd;
|
||||
io->fn = fn;
|
||||
}
|
||||
|
||||
return fd;
|
||||
}
|
||||
|
||||
/* Seeks io->seek bytes through *io's file descriptor, (counter-intuitively)
|
||||
* returning -1 if successful and a sysexits.h exit code if an unrecoverable
|
||||
* error occurred. io->buf will be cleared of useful bytes and io->seek will
|
||||
* be set to zero to indicate the seek occurred. */
|
||||
static int
|
||||
Io_fdseek(struct Io *io){
|
||||
int (*op)(int, void *, size_t);
|
||||
|
||||
if(!fdisstd(io->fd) && lseek(io->fd, io->seek, SEEK_SET) != -1)
|
||||
return -1;
|
||||
|
||||
/* repeated code to get the condition out of the loop */
|
||||
if(io->fl == write_flags){
|
||||
memset(io->buf, '\0', io->bs);
|
||||
/* We're going to cheat and use bufuse as the retval for write(2),
|
||||
* which is fine because it'll be zeroed as this function returns
|
||||
* anyway. */
|
||||
do{
|
||||
if((io->bufuse = write(io->fd, io->buf, MIN(io->bs, io->seek)))
|
||||
== 0)
|
||||
/* second chance */
|
||||
io->bufuse = write(io->fd, io->buf, MIN(io->bs, io->seek));
|
||||
}while((io->seek -= io->bufuse) > 0 && io->bufuse != 0);
|
||||
}else if(io->fl == read_flags){
|
||||
do{
|
||||
if((io->bufuse = read(io->fd, io->buf, MIN(io->bs, io->seek)))
|
||||
== 0)
|
||||
/* second chance */
|
||||
io->bufuse = read(io->fd, io->buf, MIN(io->bs, io->seek));
|
||||
}while((io->seek -= io->bufuse) > 0 && io->bufuse != 0);
|
||||
}else
|
||||
return EX_SOFTWARE;
|
||||
|
||||
io->bufuse = 0;
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Reads io->bs bytes from *io's file descriptor into io->buf, storing the
|
||||
* number of read bytes in io->bufuse and updating io->bytes. If io->bufuse is
|
||||
* 0, errno will probably be set. Returns io. */
|
||||
static struct Io *
|
||||
Io_read(struct Io *io){
|
||||
int t;
|
||||
|
||||
io->bytes += (io->bufuse = read(io->fd, io->buf, io->bs));
|
||||
assert(io->bs > 0);
|
||||
assert(io->bufuse < io->bs);
|
||||
|
||||
if((t = read(io->fd, &(io->buf)[io->bufuse], io->bs - io->bufuse)) < 0){
|
||||
io->error = errno;
|
||||
t = 0;
|
||||
}
|
||||
|
||||
io->bufuse += t;
|
||||
io->bytes += t;
|
||||
io->prec += (0 < io->bufuse && io->bufuse < io->bs);
|
||||
io->rec += (io->bufuse == io->bs);
|
||||
|
||||
assert(io->bufuse <= io->bs);
|
||||
|
||||
return io;
|
||||
}
|
||||
|
||||
/* Sets the variables in a struct *io to the defaults. Identifies the read/
|
||||
* write ends of the "pipe" by checking io->fl. Returns io. */
|
||||
static struct Io *
|
||||
Io_setdefaults(struct Io *io){
|
||||
|
||||
io->bs = bs_default;
|
||||
io->buf = NULL;
|
||||
io->bytes = 0;
|
||||
io->fd = (io->fl == read_flags) ? STDIN_FILENO : STDOUT_FILENO;
|
||||
io->fn = (io->fl == read_flags) ? stdin_name : stdout_name;
|
||||
io->prec = 0;
|
||||
io->rec = 0;
|
||||
io->seek = 0;
|
||||
|
||||
return io;
|
||||
}
|
||||
|
||||
/* Writes io->bufuse units from io->buf to io->fd, permuting any unwritten
|
||||
* bytes to the start of io->buf and updating io->bufuse. If io->bufuse doesn't
|
||||
* change, errno will probably be set. Returns io. */
|
||||
static struct Io *
|
||||
Io_write(struct Io *io){
|
||||
int t;
|
||||
|
||||
if((t = write(io->fd, io->buf, io->bufuse)) > 0)
|
||||
memmove(io->buf, io->buf + t, (io->bufuse -= t));
|
||||
assert(io->bufuse > 0);
|
||||
assert(io->bufuse <= io->bs);
|
||||
|
||||
if((t = write(io->fd, io->buf, io->bufuse)) < 0){
|
||||
io->error = errno;
|
||||
t = 0;
|
||||
}else if(t > 0)
|
||||
memmove(io->buf, &(io->buf)[t], (io->bufuse -= t));
|
||||
|
||||
io->bytes += t;
|
||||
io->prec += (t > 0 && io->bufuse > 0);
|
||||
io->rec += (t > 0 && io->bufuse == 0);
|
||||
|
||||
return io;
|
||||
}
|
||||
|
||||
/* Prints an error message suitable for the event of an operating system error,
|
||||
* with the error itself to be described in the string s. */
|
||||
static int
|
||||
oserr(char *s){
|
||||
|
||||
fprintf(stderr, "%s: %s: %s\n", program_name, s, strerror(errno));
|
||||
|
||||
oserr(char *e, int n){
|
||||
fprintf(stderr, "%s: %s: %s\n", program_name, e, strerror(n));
|
||||
return EX_OSERR;
|
||||
}
|
||||
|
||||
/* Prints statistics regarding the use of dj, particularly partially and
|
||||
* completely read and written records, accessing debug, ep, and fmt_output. */
|
||||
* completely read and written records. */
|
||||
static void
|
||||
output(void){
|
||||
fprintio(FILE *stream, char *fmt, struct Io io[2]){
|
||||
|
||||
if(debug >= 1)
|
||||
fprintf(stderr, fmt_output,
|
||||
ep[0].rec, ep[0].prec, ep[1].rec, ep[1].prec,
|
||||
ep[0].bytes, ep[1].bytes);
|
||||
fprintf(stream, fmt,
|
||||
io[0].rec, io[0].prec, io[1].rec, io[1].prec,
|
||||
io[0].bytes, io[1].bytes);
|
||||
|
||||
return;
|
||||
}
|
||||
@ -311,142 +142,211 @@ parse(char *s){
|
||||
}
|
||||
|
||||
static int
|
||||
usage(void){
|
||||
usage(char *s){
|
||||
|
||||
fprintf(stderr, "Usage: %s (-AdfHqQ) (-a [byte]) (-c [count])\n"
|
||||
"\t(-i [input file]) (-b [input block size]) (-s [input offset])\n"
|
||||
"\t(-o [output file]) (-B [output block size]) (-S [output offset])\n",
|
||||
fprintf(stderr, "Usage: %s [-Hn] [-a byte] [-c count]\n"
|
||||
"\t[-i file] [-b block_size] [-s offset]\n"
|
||||
"\t[-o file] [-B block_size] [-S offset]\n",
|
||||
program_name);
|
||||
|
||||
return EX_USAGE;
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[]){
|
||||
int c;
|
||||
int i;
|
||||
int align; /* low 8b used, negative if no alignment is being done */
|
||||
int count; /* 0 if dj(1) runs until no more reads are possible */
|
||||
char *fmt; /* == fmt_asv (default) or fmt_human (-H) */
|
||||
size_t i; /* side of io being modified */
|
||||
char noerror; /* 0=exits (default) 1=retries on partial reads or writes */
|
||||
struct Io io[2 /* { in, out } */];
|
||||
|
||||
setdefaults;
|
||||
/* Set defaults. */
|
||||
align = -1;
|
||||
count = 0;
|
||||
fmt = fmt_asv;
|
||||
noerror = 0;
|
||||
for(i = 0; i < (sizeof io) / (sizeof *io); ++i){
|
||||
io[i].bs = 1024 /* 1 KiB */; /* GNU dd(1) default; POSIX says 512B */
|
||||
io[i].bufuse = 0;
|
||||
io[i].bytes = 0;
|
||||
io[i].fd = i == 0 ? STDIN_FILENO : STDOUT_FILENO;
|
||||
io[i].fn = i == 0 ? stdin_name : stdout_name;
|
||||
io[i].fl = i == 0 ? read_flags : write_flags;
|
||||
io[i].error = 0;
|
||||
io[i].prec = 0;
|
||||
io[i].rec = 0;
|
||||
io[i].seek = 0;
|
||||
}
|
||||
|
||||
if(argc > 0){
|
||||
int c;
|
||||
|
||||
program_name = argv[0];
|
||||
while((c = getopt(argc, argv, "a:Ab:B:c:di:hHnqs:S:o:")) != -1)
|
||||
while((c = getopt(argc, argv, ":a:b:B:c:i:hHns:S:o:")) != -1)
|
||||
switch(c){
|
||||
case 'i': case 'o':
|
||||
i = (c == 'o');
|
||||
case 'i': case 'o': i = (c == 'o');
|
||||
if(optarg[0] == '-' && optarg[1] == '\0'){ /* optarg == "-" */
|
||||
ep[i].fd = (i == 0) ? STDIN_FILENO : STDOUT_FILENO;
|
||||
ep[i].fn = (i == 0) ? stdin_name : stdout_name;
|
||||
io[i].fd = i == 0 ? STDIN_FILENO : STDOUT_FILENO;
|
||||
io[i].fn = i == 0 ? stdin_name : stdout_name;
|
||||
break;
|
||||
}else if(Io_fdopen(&ep[i], optarg) != -1)
|
||||
break;
|
||||
terminate(ep);
|
||||
return oserr(optarg);
|
||||
case 'A': align = '\0'; break;
|
||||
case 'd': ++debug; break;
|
||||
case 'n': noerror = 1; break;
|
||||
case 'H': fmt_output = fmt_human; break;
|
||||
case 'q': --debug; break;
|
||||
}else{
|
||||
int fd;
|
||||
|
||||
if((fd = open(optarg, io[i].fl, creat_mode)) != -1
|
||||
&& (fdisstd(io[i].fd) || close(io[i].fd) == 0)){
|
||||
io[i].fd = fd;
|
||||
io[i].fn = optarg;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return oserr(optarg, errno);
|
||||
case 'n': noerror = 1; break;
|
||||
case 'H': fmt = fmt_human; break;
|
||||
case 'a':
|
||||
if(optarg[0] != '\0' && optarg[1] == '\0'){
|
||||
if(optarg[0] == '\0' || optarg[1] == '\0'){
|
||||
align = optarg[0];
|
||||
break;
|
||||
}
|
||||
/* FALLTHROUGH */
|
||||
case 'c': case 'b': case 's': case 'B': case 'S':
|
||||
case 'c': case 'b': case 's': case 'B': case 'S': /* numbers */
|
||||
if(c == 'c' && (count = parse(optarg)) >= 0)
|
||||
break;
|
||||
i = isupper(c);
|
||||
c = tolower(c);
|
||||
if((c == 'b' && (ep[i].bs = parse(optarg)) > 0)
|
||||
|| (c == 's' && (ep[i].seek = parse(optarg)) >= 0))
|
||||
i = (c >= 'A' && c <= 'Z');
|
||||
c |= 0x20 /* 0b 0010 0000 */; /* (ASCII) make lowercase */
|
||||
if((c == 'b' && (io[i].bs = parse(optarg)) > 0)
|
||||
|| (c == 's' && (io[i].seek = parse(optarg)) >= 0))
|
||||
break;
|
||||
/* FALLTHROUGH */
|
||||
default:
|
||||
terminate(ep);
|
||||
return usage();
|
||||
return usage(program_name);
|
||||
}
|
||||
}
|
||||
|
||||
if(debug >= 3)
|
||||
fprintf(stderr,
|
||||
"argv0=%s\n"
|
||||
"in=%s\tibs=%d\tskip=%ld\talign=%hhx\tcount=%d\n"
|
||||
"out=%s\tobs=%d\tseek=%ld\tdebug=%2d\tnoerror=%d\n",
|
||||
program_name,
|
||||
ep[0].fn, ep[0].bs, ep[0].seek, align, count,
|
||||
ep[1].fn, ep[1].bs, ep[1].seek, debug, noerror);
|
||||
assert(io->fd != STDIN_FILENO || io->fl == read_flags);
|
||||
assert(io->fd != STDOUT_FILENO || io->fl == write_flags);
|
||||
|
||||
if(argc > optind){
|
||||
terminate(ep);
|
||||
return usage();
|
||||
}
|
||||
if(argc > optind)
|
||||
return usage(program_name);
|
||||
|
||||
for(i = 0; i <= 1; ++i){
|
||||
if(Io_bufalloc(&ep[i]) == NULL){
|
||||
fprintf(stderr, "%s: Failed to allocate %d bytes\n",
|
||||
program_name, ep[i].bs);
|
||||
terminate(ep);
|
||||
for(i = 0; i < (sizeof io) / (sizeof *io); ++i){
|
||||
/* buffer allocation */
|
||||
if((io[i].buf = malloc(io[i].bs * (sizeof *(io[i].buf)))) == NULL){
|
||||
fprintf(stderr, "%s: Failed to allocate %zd bytes\n",
|
||||
program_name, io[i].bs);
|
||||
return EX_OSERR;
|
||||
}else if(ep[i].seek > 0)
|
||||
switch(Io_fdseek(&ep[i])){
|
||||
case EX_OK:
|
||||
output();
|
||||
terminate(ep);
|
||||
return EX_OK;
|
||||
}
|
||||
}
|
||||
/* easy seeking */
|
||||
if(!fdisstd(io[i].fd) && lseek(io[i].fd, io[i].seek, SEEK_SET) != -1)
|
||||
io[i].seek = 0;
|
||||
}
|
||||
|
||||
do{ /* read */
|
||||
Io_read(&ep[0]);
|
||||
if(!noerror && ep[0].bufuse == 0)
|
||||
Io_read(&ep[0]); /* second chance */
|
||||
if(ep[0].bufuse == 0) /* that's all she wrote */
|
||||
break;
|
||||
else if(ep[0].bufuse < ep[0].bs){
|
||||
++ep[0].prec;
|
||||
if(debug >= 2){
|
||||
fprintf(stderr, "%s: Partial read:\n\t", program_name);
|
||||
output();
|
||||
}
|
||||
if(!noerror)
|
||||
count = 1;
|
||||
if(align >= 0)
|
||||
Io_bufrpad(&ep[0], align);
|
||||
}else
|
||||
++ep[0].rec;
|
||||
/* hard seeking */
|
||||
if(io[1].seek > 0){
|
||||
size_t t;
|
||||
do{
|
||||
memset(io[1].buf, '\0',
|
||||
(t = io[1].bufuse = MIN(io[1].bs, io[1].seek)));
|
||||
if(Io_write(&io[1])->bufuse == t && !noerror && io[1].error == 0)
|
||||
Io_write(&io[1]); /* second chance */
|
||||
if(io[1].error != 0)
|
||||
return oserr(io[1].fn, io[1].error);
|
||||
}while((io[1].seek -= (t - io[1].bufuse)) > 0 && io[1].bufuse != t);
|
||||
io[1].bufuse = 0;
|
||||
}
|
||||
|
||||
/* write */
|
||||
do{ if(ep[1].bs > ep[0].bs){ /* io[1].bs > io[0].bs */
|
||||
Io_bufxapp(&ep[1], &ep[0]);
|
||||
if(ep[0].bs + ep[1].bufuse <= ep[1].bs && count != 1)
|
||||
continue; /* we could write more */
|
||||
}else
|
||||
Io_bufxfer(&ep[1], &ep[0], MIN(ep[0].bufuse, ep[1].bs));
|
||||
if(io[1].seek > 0){
|
||||
fprintio(stderr, fmt, io);
|
||||
return oserr(io[1].fn, errno);
|
||||
}
|
||||
|
||||
c = ep[1].bufuse;
|
||||
Io_write(&ep[1]);
|
||||
if(!noerror && ep[1].bufuse == c)
|
||||
Io_write(&ep[1]); /* second chance */
|
||||
if(c == ep[1].bufuse){ /* no more love */
|
||||
count = 1;
|
||||
do{
|
||||
assert(io[0].bufuse == 0);
|
||||
|
||||
{ /* read */
|
||||
char skipping;
|
||||
size_t t;
|
||||
|
||||
/* hack to intentionally get a partial read from Io_read */
|
||||
if((skipping = (io[0].seek > 0)) && io[0].seek < io[0].bs)
|
||||
io[0].bufuse = io[0].bs - io[0].seek;
|
||||
|
||||
t = io[0].bufuse;
|
||||
if(Io_read(&io[0])->bufuse == t && !noerror && io[0].error == 0)
|
||||
Io_read(&io[0]); /* second chance */
|
||||
assert(io[0].bufuse >= t);
|
||||
if(io[0].bufuse == t) /* that's all she wrote */
|
||||
break;
|
||||
}else if(c > ep[1].bufuse && ep[1].bufuse > 0){
|
||||
ep[1].prec += 1;
|
||||
if(debug >= 2){
|
||||
fprintf(stderr, "%s: Partial write:\n\t", program_name);
|
||||
output();
|
||||
}
|
||||
|
||||
if(/* t < io[0].bufuse && */ io[0].bufuse < io[0].bs){
|
||||
fprintf(stderr, "%s: Partial read:\n\t", program_name);
|
||||
fprintio(stderr, fmt, io);
|
||||
if(!noerror)
|
||||
count = 1;
|
||||
}else if(ep[1].bufuse == 0 && c < ep[1].bs)
|
||||
++ep[1].prec;
|
||||
else
|
||||
++ep[1].rec;
|
||||
}while(ep[0].bufuse > 0);
|
||||
if(align >= 0){
|
||||
/* fill the rest of the ibuf with padding */
|
||||
memset(&(io[0].buf)[io[0].bufuse], align,
|
||||
io[0].bs - io[0].bufuse);
|
||||
io->bufuse = io->bs;
|
||||
}
|
||||
}
|
||||
|
||||
if(skipping){
|
||||
io[0].bufuse = 0;
|
||||
count += (count != 0);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
/* write */
|
||||
do{
|
||||
int t;
|
||||
|
||||
if(io[0].bs <= io[1].bs){
|
||||
int n;
|
||||
|
||||
/* saturate obuf */
|
||||
memcpy(io[1].buf, io[0].buf,
|
||||
(io[1].bufuse = (n = MIN(io[0].bufuse, io[1].bs))));
|
||||
/* permute the copied units out of ibuf */
|
||||
memmove(io[0].buf, &(io[0].buf)[n], (io[0].bufuse -= n));
|
||||
}else /* if(io[0].bs < io[1].bs) */ {
|
||||
int n;
|
||||
|
||||
/* drain what we can from ibuf */
|
||||
memcpy(&(io[1].buf)[io[1].bufuse], io[0].buf,
|
||||
(n = MIN(io[0].bufuse, io[1].bs - io[1].bufuse)));
|
||||
io[1].bufuse += n;
|
||||
/* permute out the copied units */
|
||||
memmove(io[0].buf, &(io[0].buf)[n], io[0].bs - n);
|
||||
io[0].bufuse -= n;
|
||||
|
||||
if(io[0].bs + io[1].bufuse <= io[1].bs && count != 1)
|
||||
continue; /* obuf not saturated - we could write more */
|
||||
}
|
||||
|
||||
t = io[1].bufuse;
|
||||
if(Io_write(&io[1])->bufuse == t && !noerror && io[1].error == 0)
|
||||
Io_write(&io[1]); /* second chance */
|
||||
assert(io[1].bufuse <= t);
|
||||
if(io[1].bufuse == t){ /* no more love */
|
||||
count = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if(0 < io[1].bufuse /* && io[1].bufuse < t */){
|
||||
fprintf(stderr, "%s: Partial write:\n\t", program_name);
|
||||
fprintio(stderr, fmt, io);
|
||||
if(!noerror)
|
||||
count = 1;
|
||||
}
|
||||
}while(io[0].bufuse > 0);
|
||||
}while(count == 0 || --count > 0);
|
||||
|
||||
output();
|
||||
terminate(ep);
|
||||
fprintio(stderr, fmt, io);
|
||||
|
||||
for(i = 0; i < (sizeof io) / (sizeof *io); ++i)
|
||||
if(io[i].error)
|
||||
return oserr(io[i].fn, io[i].error);
|
||||
|
||||
return EX_OK;
|
||||
}
|
||||
|
||||
@ -52,7 +52,7 @@ int main(int argc, char *argv[]){
|
||||
|
||||
if(optind + 2 /* ref cmp */ > argc){
|
||||
usage: fprintf(stderr,
|
||||
"Usage: %s (-eghl) [integer] [integer...]\n",
|
||||
"Usage: %s [-egl] integer integer...\n",
|
||||
argv[0] == NULL ? program_name : argv[0]);
|
||||
return EX_USAGE;
|
||||
}
|
||||
|
||||
2
src/mm.c
2
src/mm.c
@ -110,7 +110,7 @@ oserr(char *s, char *r){
|
||||
* returns an exit status appropriate for a usage error. */
|
||||
int usage(char *s){
|
||||
|
||||
fprintf(stderr, "Usage: %s (-aenu) (-i [input])... (-o [output])...\n", s);
|
||||
fprintf(stderr, "Usage: %s [-aenu] [-i input]... [-o output]...\n", s);
|
||||
|
||||
return EX_USAGE;
|
||||
}
|
||||
|
||||
@ -39,7 +39,7 @@ int main(int argc, char *argv[]){
|
||||
}
|
||||
|
||||
if(argc > optind){
|
||||
usage: fprintf(stderr, "Usage: %s (-eht)\n", argv[0]);
|
||||
usage: fprintf(stderr, "Usage: %s [-et]\n", argv[0]);
|
||||
return EX_USAGE;
|
||||
}
|
||||
|
||||
|
||||
@ -66,7 +66,7 @@ int main(int argc, char *argv[]){
|
||||
if(ops[i] == 'e')
|
||||
continue;
|
||||
else if(ops[i] == 'h'){
|
||||
usage: fprintf(stderr, "Usage: %s (-%s) [file...]\n",
|
||||
usage: fprintf(stderr, "Usage: %s [-%s] file...\n",
|
||||
argv[0] == NULL
|
||||
? program_name
|
||||
: argv[0],
|
||||
|
||||
@ -56,7 +56,7 @@ int main(int argc, char *argv[]){
|
||||
goto pass;
|
||||
}
|
||||
|
||||
fprintf(stderr, "Usage: %s [type] [string...]\n",
|
||||
fprintf(stderr, "Usage: %s type string...\n",
|
||||
argv[0] == NULL ? program_name : argv[0]);
|
||||
|
||||
return EX_USAGE;
|
||||
|
||||
@ -8,7 +8,7 @@ int main(int argc, char *argv[]){
|
||||
int i;
|
||||
|
||||
if(argc < 3){
|
||||
fprintf(stderr, "Usage: %s [string] [string...]\n",
|
||||
fprintf(stderr, "Usage: %s string string...\n",
|
||||
argv[0] == NULL ? program_name : argv[0]);
|
||||
return EX_USAGE;
|
||||
}
|
||||
|
||||
@ -29,13 +29,16 @@ use getopt::GetOpt;
|
||||
extern crate sysexits;
|
||||
use sysexits::{ EX_OK, EX_OSERR, EX_USAGE };
|
||||
|
||||
extern crate strerror;
|
||||
use strerror::StrError;
|
||||
|
||||
fn oserr(s: &str, e: Error) -> ExitCode {
|
||||
eprintln!("{}: {}", s, e);
|
||||
eprintln!("{}: {}", s, e.strerror());
|
||||
ExitCode::from(EX_OSERR as u8)
|
||||
}
|
||||
|
||||
fn usage(s: &str) -> ExitCode {
|
||||
eprintln!("Usage: {} (-f) (-w [wordsize])", s);
|
||||
eprintln!("Usage: {} [-f] [-w word_size]", s);
|
||||
ExitCode::from(EX_USAGE as u8)
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user