/usr.bin/sed/misc.c

https://bitbucket.org/freebsd/freebsd-head/ · C · 71 lines · 27 code · 7 blank · 37 comment · 4 complexity · 4a75d74a6f6936bec5163f334eccc273 MD5 · raw file

  1. /*-
  2. * Copyright (c) 1992 Diomidis Spinellis.
  3. * Copyright (c) 1992, 1993
  4. * The Regents of the University of California. All rights reserved.
  5. *
  6. * This code is derived from software contributed to Berkeley by
  7. * Diomidis Spinellis of Imperial College, University of London.
  8. *
  9. * Redistribution and use in source and binary forms, with or without
  10. * modification, are permitted provided that the following conditions
  11. * are met:
  12. * 1. Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. * 2. Redistributions in binary form must reproduce the above copyright
  15. * notice, this list of conditions and the following disclaimer in the
  16. * documentation and/or other materials provided with the distribution.
  17. * 4. Neither the name of the University nor the names of its contributors
  18. * may be used to endorse or promote products derived from this software
  19. * without specific prior written permission.
  20. *
  21. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31. * SUCH DAMAGE.
  32. */
  33. #include <sys/cdefs.h>
  34. __FBSDID("$FreeBSD$");
  35. #ifndef lint
  36. static const char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93";
  37. #endif
  38. #include <sys/types.h>
  39. #include <err.h>
  40. #include <limits.h>
  41. #include <regex.h>
  42. #include <stdio.h>
  43. #include <stdlib.h>
  44. #include <string.h>
  45. #include "defs.h"
  46. #include "extern.h"
  47. /*
  48. * Return a string for a regular expression error passed. This is overkill,
  49. * because of the silly semantics of regerror (we can never know the size of
  50. * the buffer).
  51. */
  52. char *
  53. strregerror(int errcode, regex_t *preg)
  54. {
  55. static char *oe;
  56. size_t s;
  57. if (oe != NULL)
  58. free(oe);
  59. s = regerror(errcode, preg, NULL, 0);
  60. if ((oe = malloc(s)) == NULL)
  61. err(1, "malloc");
  62. (void)regerror(errcode, preg, oe, s);
  63. return (oe);
  64. }