source: rtems/c/build-tools/eolstrip.c @ 1ceface

4.104.114.84.95
Last change on this file since 1ceface was 1ceface, checked in by Joel Sherrill <joel.sherrill@…>, on 10/06/95 at 16:33:30

moved to new development machine and went to gcc 2.7.0

  • Property mode set to 100644
File size: 7.8 KB
Line 
1/*
2 *  eolstrip - strip white space from end of lines
3 *
4 *  This program strips the white space from the end of every line in the
5 *  specified program.
6 *
7 *  usage:  eolstrip  [ -v ] [ arg ... ] files...
8 *           -v          -- verbose
9 *
10 * $Id$
11 * $Log$
12 * Revision 1.2  1995/05/31  16:44:28  joel
13 * fixing revision
14 *
15 * Revision 1.1.1.1  1995/05/11  17:35:12  joel
16 * Release 3.1.15
17 *
18 */
19
20#define GETOPTARGS "vt"
21
22char *USAGE = "\
23usage:  cklength  [ -v ] [ arg ... ] files... \n\
24            -v          -- verbose\n\
25            -t          -- test only .. DO NOT OVERWRITE FILE!!!\n\
26\n\
27Strip the white space from the end of every line on the list of files.\n\
28";
29
30#include <stdio.h>
31#include <fcntl.h>
32#include <ctype.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <string.h>
36#include <memory.h>
37#include <stdarg.h>
38
39#define BUFFER_SIZE     2048
40#define MAX_PATH        2048
41
42#define SUCCESS         0
43#define FAILURE         -1
44#define Failed(x)       (((int) (x)) == FAILURE)
45#define TRUE    1
46#define FALSE   0
47#define STREQ(a,b)      (strcmp(a,b) == 0)
48#define NUMELEMS(arr)   (sizeof(arr) / sizeof(arr[0]))
49
50/*
51 * Definitions for unsigned "ints"; especially for use in data structures
52 *  that will be shared among (potentially) different cpu's (we punt on
53 *  byte ordering problems tho)
54 */
55
56typedef unsigned char   u8;
57typedef unsigned short  u16;
58typedef unsigned long   u32;
59
60/*
61 * vars controlled by command line options
62 */
63
64int verbose = FALSE;                    /* be verbose */
65int test_only = FALSE;                  /* test only */
66
67extern char *optarg;                    /* getopt(3) control vars */
68extern int optind, opterr;
69extern int errno;
70
71char *progname;                         /* for error() */
72
73int process(char *arg);
74void error(int errn, ...);
75long getparm(char *s, long min, long max, char *msg);
76
77#define ERR_ERRNO  (1<<((sizeof(int) * 8) - 2)) /* hi bit; use 'errno' */
78#define ERR_FATAL  (ERR_ERRNO / 2)              /* fatal error ; no return */
79#define ERR_ABORT  (ERR_ERRNO / 4)              /* fatal error ; abort */
80#define ERR_MASK   (ERR_ERRNO | ERR_FATAL | ERR_ABORT) /* all */
81
82#define stol(p) strtol(p, (char **) NULL, 0)
83int  Open(), Read(), Write();
84
85int
86main(int argc, char **argv, char **env)
87{
88    register int c;
89    int showusage = FALSE;                      /* usage error? */
90    int rc = 0;
91
92    /*
93     * figure out invocation leaf-name
94     */
95
96    if ((progname = strrchr(argv[0], '/')) == (char *) NULL)
97        progname = argv[0];
98    else
99        progname++;
100
101    argv[0] = progname;                         /* for getopt err reporting */
102
103    /*
104     *  Check options and arguments.
105     */
106
107    opterr = 0;                                 /* we'll report all errors */
108    while ((c = getopt(argc, argv, GETOPTARGS)) != EOF)
109        switch (c)
110        {
111            case 't':                           /* toggle test only mode */
112                test_only = ! test_only;
113                break;
114
115            case 'v':                           /* toggle verbose */
116                verbose = ! verbose;
117                break;
118
119            case '?':
120                showusage = TRUE;
121        }
122
123    if (showusage)
124    {
125        (void) fprintf(stderr, "%s", USAGE);
126        exit(1);
127    }
128
129    /*
130     *  traverse and process the arguments
131     */
132
133    for ( ; argv[optind]; optind++)
134        if (Failed(process(argv[optind])))
135            rc = FAILURE;
136
137    return rc;
138}
139
140
141/*
142 * process(arg)
143 */
144
145int
146process(char *arg)
147{
148  FILE   *in;
149  FILE   *out = (FILE *) 0;
150  char    outname[ MAX_PATH ];
151  char   *bptr;
152  char    buffer[ BUFFER_SIZE ];
153  int     length;
154  int     line_number;
155  int     rc = SUCCESS;  /* succeed by default */
156
157  in = fopen( arg, "r" );
158  if (!in)
159    error( ERR_ERRNO | ERR_FATAL, "Unable to open file (%s)\n", arg );
160
161  if ( !test_only ) {
162    sprintf( outname, "%s.eoltmp", arg );
163
164    out = fopen( outname, "w" );
165    if (!out)
166      error( ERR_ERRNO | ERR_FATAL, "Unable to open file (%s)\n", arg );
167  }
168
169  if ( verbose )
170    fprintf( stderr, "Processing %s\n", arg );
171
172  for ( line_number=1 ; ; line_number++ ) {
173    bptr = fgets( buffer, BUFFER_SIZE, in );
174    if (!bptr)
175      break;
176
177    /*
178     *  Don't count the carriage return.
179     */
180
181    length = strlen( buffer ) - 1;
182
183    if ( buffer[ length ] != '\n' )
184      error(ERR_ERRNO|ERR_FATAL, "Line %d too long in %s\n", line_number, arg);
185
186    while ( isspace( buffer[ length ] ) )
187      buffer[ length-- ] = '\0';
188
189    if ( test_only ) {
190      fprintf( stderr, "%s\n", arg );
191      break;
192    }
193
194    fprintf( out, "%s\n", buffer );
195  }
196
197  fclose( in );
198  if ( !test_only ) {
199    fclose( out );
200    rename( outname, arg );
201  }
202  return rc;
203}
204
205/*
206 * error(errn, arglist)
207 *      report an error to stderr using printf(3) conventions.
208 *      Any output is preceded by '<progname>: '
209 *
210 * Uses ERR_FATAL bit to request exit(errn)
211 *      ERR_ABORT to request abort()
212 *      ERR_ERRNO to indicate use of errno instead of argument.
213 *
214 * If resulting 'errn' is non-zero, it is assumed to be an 'errno' and its
215 *      associated error message is appended to the output.
216 */
217
218/*VARARGS*/
219
220void
221error(int error_flag, ...)
222{
223    va_list arglist;
224    register char *format;
225    extern char *sys_errlist[];
226    extern int sys_nerr;
227    int local_errno;
228
229    extern int errno;
230
231    (void) fflush(stdout);          /* in case stdout/stderr same */
232
233    local_errno = error_flag & ~ERR_MASK;
234    if (error_flag & ERR_ERRNO)     /* use errno? */
235        local_errno = errno;
236
237    va_start(arglist, error_flag);
238    format = va_arg(arglist, char *);
239    (void) fprintf(stderr, "%s: ", progname);
240    (void) vfprintf(stderr, format, arglist);
241    va_end(arglist);
242
243    if (local_errno)
244        if ((local_errno > 0) && (local_errno < sys_nerr))
245            (void) fprintf(stderr, " (%s)\n", sys_errlist[local_errno]);
246        else
247            (void) fprintf(stderr, " (unknown errno=%d)\n", local_errno);
248    else
249        (void) fprintf(stderr, "\n");
250
251    (void) fflush(stderr);
252
253    if (error_flag & (ERR_FATAL | ERR_ABORT))
254    {
255        if (error_flag & ERR_FATAL)
256        {
257            error(0, local_errno ? "fatal error, exiting" : "exiting");
258            exit(local_errno);
259        }
260        else
261        {
262            error(0, "fatal error, aborting");
263            abort();
264        }
265    }
266}
267
268long
269getparm(char *s,
270        long min,
271        long max,
272        char *msg)
273{
274    long val;
275
276    if ( ! strchr("0123456789-", *s))
277    {
278        error(ERR_FATAL, "'%s' is not a number", s);
279        return min;
280    }
281
282    val = strtol(s, (char **) NULL, 0);
283    if ((val < min) || (val > max))
284    {
285        if (min == max)
286            error(ERR_FATAL, "%s can only be %ld", s, min);
287        else
288            error(ERR_FATAL, "%s must be between %ld and %ld", msg, min, max);
289    }
290
291    return val;
292}
293
294
295/*
296 * Open()
297 *      Perform open(2), returning the file descriptor.  Prints
298 *      error message if open fails.
299 */
300
301int
302Open(char *file,
303     int oflag,
304     int mode)
305{
306    int O_fd;
307
308    if (Failed(O_fd = open(file, oflag, mode)))
309        error(
310          ERR_ERRNO | ERR_FATAL,
311          "open('%s', 0x%x, 0%o) failed", file, oflag, mode
312        );
313
314    return O_fd;
315}
316
317/*
318 * Read()
319 *      Perform read(2); prints error message if fails.
320 */
321
322int
323Read(int file,
324     char *buffer,
325     unsigned int count)
326{
327    int nbytes;
328
329    if (Failed(nbytes = read(file, buffer, count)))
330        error(
331          ERR_ERRNO | ERR_FATAL,
332          "read(%d, 0x%x, %d) failed", file, buffer, count
333        );
334
335    return nbytes;
336}
337
338/*
339 * Write()
340 *      Perform write(2); prints error message if fails.
341 */
342
343int
344Write(int file,
345      char *buffer,
346      unsigned int count)
347{
348    int nbytes;
349
350    if (Failed(nbytes = write(file, buffer, count)))
351        error(
352          ERR_ERRNO | ERR_FATAL,
353          "write(%d, 0x%x, %d) failed", file, buffer, count
354        );
355
356    return nbytes;
357}
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