forked from Imagelibrary/rtems
Initial revision
This commit is contained in:
Joel Sherrill
364
c/build-tools/cklength.c
Normal file
364
c/build-tools/cklength.c
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/*
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* cklength - check the length of lines in a file
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*
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* This program check to see if the files passed to it on the command line
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* contain a line which exceeds the maximum allowable length. The default
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* maximum line length is 80.
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*
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* usage: cklength [ -v ] [ arg ... ] files...
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* -l length -- maximum line length
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* -v -- verbose
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*
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* $Id$
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* $Log$
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*/
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#define GETOPTARGS "l:nNv"
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char *USAGE = "\
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usage: cklength [ -v ] [ arg ... ] files... \n\
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-l length -- maximum line length\n\
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-n -- report line numbers for offending lines\n\
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-N -- report line numbers and length for offending lines\n\
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-v -- verbose\n\
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\n\
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Print the name of files which have at least 1 line which exceeds the\n\
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maximum line length. The default maximum line length is 80.\n\
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";
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#include <stdio.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <memory.h>
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#include <stdarg.h>
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#define BUFFER_SIZE 512
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#define SUCCESS 0
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#define FAILURE -1
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#define Failed(x) (((int) (x)) == FAILURE)
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#define TRUE 1
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#define FALSE 0
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#define STREQ(a,b) (strcmp(a,b) == 0)
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#define NUMELEMS(arr) (sizeof(arr) / sizeof(arr[0]))
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/*
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* Definitions for unsigned "ints"; especially for use in data structures
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* that will be shared among (potentially) different cpu's (we punt on
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* byte ordering problems tho)
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*/
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned long u32;
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/*
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* vars controlled by command line options
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*/
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int verbose = FALSE; /* be verbose */
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int report_line_numbers = FALSE; /* report line numbers of offenders */
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int report_line_length = FALSE; /* report line length of offenders */
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int line_length = 80; /* maximum allowable line length */
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extern char *optarg; /* getopt(3) control vars */
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extern int optind, opterr;
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extern int errno;
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char *progname; /* for error() */
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int process(char *arg);
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void error(int errn, ...);
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long getparm(char *s, long min, long max, char *msg);
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#define ERR_ERRNO (1<<((sizeof(int) * 8) - 2)) /* hi bit; use 'errno' */
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#define ERR_FATAL (ERR_ERRNO / 2) /* fatal error ; no return */
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#define ERR_ABORT (ERR_ERRNO / 4) /* fatal error ; abort */
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#define ERR_MASK (ERR_ERRNO | ERR_FATAL | ERR_ABORT) /* all */
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#define stol(p) strtol(p, (char **) NULL, 0)
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int Open(), Read(), Write();
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int
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main(int argc, char **argv, char **env)
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{
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register int c;
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int showusage = FALSE; /* usage error? */
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int rc = 0;
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/*
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* figure out invocation leaf-name
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*/
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if ((progname = strrchr(argv[0], '/')) == (char *) NULL)
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progname = argv[0];
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else
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progname++;
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argv[0] = progname; /* for getopt err reporting */
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/*
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* Check options and arguments.
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*/
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opterr = 0; /* we'll report all errors */
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while ((c = getopt(argc, argv, GETOPTARGS)) != EOF)
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switch (c)
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{
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case 'l': /* line length */
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line_length = atoi( optarg );
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if ( line_length < 0 || line_length > BUFFER_SIZE )
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error(ERR_FATAL, "(%d) is illegal line length\n",line_length);
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break;
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case 'n': /* toggle report_line_numbers */
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report_line_numbers = ! report_line_numbers;
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break;
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case 'N': /* toggle both reports */
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report_line_numbers = ! report_line_numbers;
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report_line_length = ! report_line_length;
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break;
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case 'v': /* toggle verbose */
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verbose = ! verbose;
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break;
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case '?':
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showusage = TRUE;
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}
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if (showusage)
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{
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(void) fprintf(stderr, "%s", USAGE);
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exit(1);
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}
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/*
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* traverse and process the arguments
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*/
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for ( ; argv[optind]; optind++)
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if (Failed(process(argv[optind])))
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rc = FAILURE;
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return rc;
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}
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/*
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* process(arg)
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*/
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int
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process(char *arg)
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{
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FILE *in;
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char *bptr;
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char buffer[ BUFFER_SIZE ];
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int line_number;
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int length;
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int count;
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int rc = SUCCESS; /* succeed by default */
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in = fopen( arg, "r" );
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if (!in)
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error( ERR_ERRNO | ERR_FATAL, "Unable to open file (%s)\n", arg );
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count = 0;
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for ( line_number=1 ; ; line_number++ ) {
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bptr = fgets( buffer, BUFFER_SIZE, in );
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if (!bptr)
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break;
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/*
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* Don't count the carriage return.
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*/
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length = strlen( buffer ) - 1;
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if ( length <= line_length )
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continue;
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if ( count == 0 ) {
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fprintf( stderr, "%s\n", arg );
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if ( !report_line_numbers )
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break;
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}
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if ( verbose )
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fprintf( stderr, "TOO LONG:%d: %s\n", line_number, buffer );
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if ( report_line_numbers ) {
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if ( report_line_length )
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fprintf( stderr, "%d: %d\n" , line_number, length );
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else
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fprintf( stderr, "%d\n" , line_number );
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}
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count++;
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}
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fclose( in );
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return rc;
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}
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/*
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* error(errn, arglist)
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* report an error to stderr using printf(3) conventions.
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* Any output is preceded by '<progname>: '
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*
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* Uses ERR_FATAL bit to request exit(errn)
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* ERR_ABORT to request abort()
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* ERR_ERRNO to indicate use of errno instead of argument.
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*
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* If resulting 'errn' is non-zero, it is assumed to be an 'errno' and its
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* associated error message is appended to the output.
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*/
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/*VARARGS*/
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void
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error(int error_flag, ...)
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{
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va_list arglist;
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register char *format;
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extern char *sys_errlist[];
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extern int sys_nerr;
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int local_errno;
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extern int errno;
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(void) fflush(stdout); /* in case stdout/stderr same */
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local_errno = error_flag & ~ERR_MASK;
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if (error_flag & ERR_ERRNO) /* use errno? */
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local_errno = errno;
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va_start(arglist, error_flag);
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format = va_arg(arglist, char *);
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(void) fprintf(stderr, "%s: ", progname);
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(void) vfprintf(stderr, format, arglist);
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va_end(arglist);
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if (local_errno)
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if ((local_errno > 0) && (local_errno < sys_nerr))
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(void) fprintf(stderr, " (%s)\n", sys_errlist[local_errno]);
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else
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(void) fprintf(stderr, " (unknown errno=%d)\n", local_errno);
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else
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(void) fprintf(stderr, "\n");
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(void) fflush(stderr);
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if (error_flag & (ERR_FATAL | ERR_ABORT))
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{
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if (error_flag & ERR_FATAL)
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{
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error(0, local_errno ? "fatal error, exiting" : "exiting");
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exit(local_errno);
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}
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else
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{
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error(0, "fatal error, aborting");
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abort();
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}
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}
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}
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long
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getparm(char *s,
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long min,
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long max,
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char *msg)
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{
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long val;
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if ( ! strchr("0123456789-", *s))
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{
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error(ERR_FATAL, "'%s' is not a number", s);
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return min;
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}
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val = strtol(s, (char **) NULL, 0);
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if ((val < min) || (val > max))
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{
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if (min == max)
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error(ERR_FATAL, "%s can only be %ld", s, min);
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else
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error(ERR_FATAL, "%s must be between %ld and %ld", msg, min, max);
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}
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return val;
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}
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/*
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* Open()
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* Perform open(2), returning the file descriptor. Prints
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* error message if open fails.
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*/
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int
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Open(char *file,
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int oflag,
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int mode)
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{
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int O_fd;
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if (Failed(O_fd = open(file, oflag, mode)))
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error(
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ERR_ERRNO | ERR_FATAL,
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"open('%s', 0x%x, 0%o) failed", file, oflag, mode
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);
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return O_fd;
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}
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/*
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* Read()
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* Perform read(2); prints error message if fails.
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*/
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int
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Read(int file,
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char *buffer,
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unsigned int count)
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{
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int nbytes;
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if (Failed(nbytes = read(file, buffer, count)))
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error(
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ERR_ERRNO | ERR_FATAL,
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"read(%d, 0x%x, %d) failed", file, buffer, count
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);
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return nbytes;
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}
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/*
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* Write()
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* Perform write(2); prints error message if fails.
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*/
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int
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Write(int file,
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char *buffer,
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unsigned int count)
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{
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int nbytes;
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if (Failed(nbytes = write(file, buffer, count)))
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error(
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ERR_ERRNO | ERR_FATAL,
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"write(%d, 0x%x, %d) failed", file, buffer, count
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);
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return nbytes;
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}
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