source: rtems/c/build-tools/cklength.c @ 9eef52b

4.104.114.84.95
Last change on this file since 9eef52b was 607e0a25, checked in by Joel Sherrill <joel.sherrill@…>, on 03/03/98 at 16:20:52

Switched from "extern int errno" to "#include <errno.h>".

  • Property mode set to 100644
File size: 8.5 KB
Line 
1/*
2 *  cklength - check the length of lines in a file
3 *
4 *  This program check to see if the files passed to it on the command line
5 *  contain a line which exceeds the maximum allowable length.  The default
6 *  maximum line length is 80.
7 *
8 *  usage:  cklength  [ -v ] [ arg ... ] files...
9 *           -l length   -- maximum line length
10 *           -v          -- verbose
11 *
12 * $Id$
13 */
14
15#define GETOPTARGS "l:nNv"
16
17char *USAGE = "\
18usage:  cklength  [ -v ] [ arg ... ] files... \n\
19            -l length   -- maximum line length\n\
20            -n          -- report line numbers for offending lines\n\
21            -N          -- report line numbers and length for offending lines\n\
22            -v          -- verbose\n\
23\n\
24Print the name of files which have at least 1 line which exceeds the\n\
25maximum line length.  The default maximum line length is 80.\n\
26";
27
28#include <stdio.h>
29#include <stdlib.h>
30#include <fcntl.h>
31#include <ctype.h>
32#include <stdlib.h>
33#include <unistd.h>
34#include <string.h>
35#include <memory.h>
36#include <stdarg.h>
37#include <errno.h>
38
39#include "config.h"
40
41#ifndef VMS
42#ifndef HAVE_STRERROR
43extern int sys_nerr;
44extern char *sys_errlist[];
45
46#define strerror( _err ) \
47  ((_err) < sys_nerr) ? sys_errlist [(_err)] : "unknown error"
48
49#else   /* HAVE_STRERROR */
50char *strerror ();
51#endif
52#else   /* VMS */
53char *strerror (int,...);
54#endif
55
56
57#define BUFFER_SIZE     512
58
59#define SUCCESS         0
60#define FAILURE         -1
61#define Failed(x)       (((int) (x)) == FAILURE)
62#define TRUE    1
63#define FALSE   0
64#define STREQ(a,b)      (strcmp(a,b) == 0)
65#define NUMELEMS(arr)   (sizeof(arr) / sizeof(arr[0]))
66
67/*
68 * Definitions for unsigned "ints"; especially for use in data structures
69 *  that will be shared among (potentially) different cpu's (we punt on
70 *  byte ordering problems tho)
71 */
72
73typedef unsigned char   u8;
74typedef unsigned short  u16;
75typedef unsigned long   u32;
76
77/*
78 * vars controlled by command line options
79 */
80
81int verbose = FALSE;                    /* be verbose */
82int report_line_numbers = FALSE;        /* report line numbers of offenders */
83int report_line_length = FALSE;         /* report line length of offenders */
84
85int line_length = 80;                   /* maximum allowable line length */
86
87extern char *optarg;                    /* getopt(3) control vars */
88extern int optind, opterr;
89
90char *progname;                         /* for error() */
91
92int process(char *arg);
93void error(int errn, ...);
94long getparm(char *s, long min, long max, char *msg);
95
96#define ERR_ERRNO  (1<<((sizeof(int) * 8) - 2)) /* hi bit; use 'errno' */
97#define ERR_FATAL  (ERR_ERRNO / 2)              /* fatal error ; no return */
98#define ERR_ABORT  (ERR_ERRNO / 4)              /* fatal error ; abort */
99#define ERR_MASK   (ERR_ERRNO | ERR_FATAL | ERR_ABORT) /* all */
100
101#define stol(p) strtol(p, (char **) NULL, 0)
102int  Open(), Read(), Write();
103
104int main(
105  int argc,
106  char **argv
107)
108{
109    register int c;
110    int showusage = FALSE;                      /* usage error? */
111    int rc = 0;
112
113    /*
114     * figure out invocation leaf-name
115     */
116
117    if ((progname = strrchr(argv[0], '/')) == (char *) NULL)
118        progname = argv[0];
119    else
120        progname++;
121
122    argv[0] = progname;                         /* for getopt err reporting */
123
124    /*
125     *  Check options and arguments.
126     */
127
128    opterr = 0;                                 /* we'll report all errors */
129    while ((c = getopt(argc, argv, GETOPTARGS)) != EOF)
130        switch (c)
131        {
132            case 'l':                            /* line length */
133                line_length = atoi( optarg );
134                if ( line_length < 0 || line_length > BUFFER_SIZE )
135                  error(ERR_FATAL, "(%d) is illegal line length\n",line_length);
136                break;
137
138            case 'n':                           /* toggle report_line_numbers */
139                report_line_numbers = ! report_line_numbers;
140                break;
141
142            case 'N':                           /* toggle both reports */
143                report_line_numbers = ! report_line_numbers;
144                report_line_length  = ! report_line_length;
145                break;
146
147            case 'v':                           /* toggle verbose */
148                verbose = ! verbose;
149                break;
150
151            case '?':
152                showusage = TRUE;
153        }
154
155    if (showusage)
156    {
157        (void) fprintf(stderr, "%s", USAGE);
158        exit(1);
159    }
160
161    /*
162     *  traverse and process the arguments
163     */
164
165    for ( ; argv[optind]; optind++)
166        if (Failed(process(argv[optind])))
167            rc = FAILURE;
168
169    return rc;
170}
171
172
173/*
174 * process(arg)
175 */
176
177int
178process(char *arg)
179{
180  FILE   *in;
181  char   *bptr;
182  char    buffer[ BUFFER_SIZE ];
183  int     line_number;
184  int     length;
185  int     count;
186  int     rc = SUCCESS;  /* succeed by default */
187
188  in = fopen( arg, "r" );
189  if (!in)
190    error( ERR_ERRNO | ERR_FATAL, "Unable to open file (%s)\n", arg );
191
192  count = 0;
193
194  for ( line_number=1 ; ; line_number++ ) {
195    bptr = fgets( buffer, BUFFER_SIZE, in );
196    if (!bptr)
197      break;
198
199    /*
200     *  Don't count the carriage return.
201     */
202
203    length = strlen( buffer ) - 1;
204
205    if ( length <= line_length )
206      continue;
207
208    if ( count == 0 ) {
209      fprintf( stderr, "%s\n", arg );
210      if ( !report_line_numbers )
211        break;
212    }
213
214    if ( verbose )
215      fprintf( stderr, "TOO LONG:%d: %s\n", line_number, buffer );
216
217    if ( report_line_numbers ) {
218      if ( report_line_length )
219        fprintf( stderr, "%d: %d\n" , line_number, length );
220      else
221        fprintf( stderr, "%d\n" , line_number );
222    }
223
224    count++;
225
226  }
227
228  fclose( in );
229  return rc;
230}
231
232/*
233 * error(errn, arglist)
234 *      report an error to stderr using printf(3) conventions.
235 *      Any output is preceded by '<progname>: '
236 *
237 * Uses ERR_FATAL bit to request exit(errn)
238 *      ERR_ABORT to request abort()
239 *      ERR_ERRNO to indicate use of errno instead of argument.
240 *
241 * If resulting 'errn' is non-zero, it is assumed to be an 'errno' and its
242 *      associated error message is appended to the output.
243 */
244
245/*VARARGS*/
246
247void
248error(int error_flag, ...)
249{
250    va_list arglist;
251    register char *format;
252    int local_errno;
253
254    extern int errno;
255
256    (void) fflush(stdout);          /* in case stdout/stderr same */
257
258    local_errno = error_flag & ~ERR_MASK;
259    if (error_flag & ERR_ERRNO)     /* use errno? */
260        local_errno = errno;
261
262    va_start(arglist, error_flag);
263    format = va_arg(arglist, char *);
264    (void) fprintf(stderr, "%s: ", progname);
265    (void) vfprintf(stderr, format, arglist);
266    va_end(arglist);
267
268    if (local_errno)
269      (void) fprintf(stderr, " (%s)\n", strerror(local_errno));
270
271    (void) fflush(stderr);
272
273    if (error_flag & (ERR_FATAL | ERR_ABORT))
274    {
275        if (error_flag & ERR_FATAL)
276        {
277            error(0, "fatal error, exiting");
278            exit(local_errno ? local_errno : 1);
279        }
280        else
281        {
282            error(0, "fatal error, aborting");
283            abort();
284        }
285    }
286}
287
288long
289getparm(char *s,
290        long min,
291        long max,
292        char *msg)
293{
294    long val;
295
296    if ( ! strchr("0123456789-", *s))
297    {
298        error(ERR_FATAL, "'%s' is not a number", s);
299        return min;
300    }
301
302    val = strtol(s, (char **) NULL, 0);
303    if ((val < min) || (val > max))
304    {
305        if (min == max)
306            error(ERR_FATAL, "%s can only be %ld", s, min);
307        else
308            error(ERR_FATAL, "%s must be between %ld and %ld", msg, min, max);
309    }
310
311    return val;
312}
313
314
315/*
316 * Open()
317 *      Perform open(2), returning the file descriptor.  Prints
318 *      error message if open fails.
319 */
320
321int
322Open(char *file,
323     int oflag,
324     int mode)
325{
326    int O_fd;
327
328    if (Failed(O_fd = open(file, oflag, mode)))
329        error(
330          ERR_ERRNO | ERR_FATAL,
331          "open('%s', 0x%x, 0%o) failed", file, oflag, mode
332        );
333
334    return O_fd;
335}
336
337/*
338 * Read()
339 *      Perform read(2); prints error message if fails.
340 */
341
342int
343Read(int file,
344     char *buffer,
345     unsigned int count)
346{
347    int nbytes;
348
349    if (Failed(nbytes = read(file, buffer, count)))
350        error(
351          ERR_ERRNO | ERR_FATAL,
352          "read(%d, 0x%x, %d) failed", file, buffer, count
353         );
354
355    return nbytes;
356}
357
358/*
359 * Write()
360 *      Perform write(2); prints error message if fails.
361 */
362
363int
364Write(int file,
365      char *buffer,
366      unsigned int count)
367{
368    int nbytes;
369
370    if (Failed(nbytes = write(file, buffer, count)))
371        error(
372          ERR_ERRNO | ERR_FATAL,
373          "write(%d, 0x%x, %d) failed", file, buffer, count
374        );
375
376    return nbytes;
377}
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