curl_get_line.c 1.9 KB

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  1. /***************************************************************************
  2. * _ _ ____ _
  3. * Project ___| | | | _ \| |
  4. * / __| | | | |_) | |
  5. * | (__| |_| | _ <| |___
  6. * \___|\___/|_| \_\_____|
  7. *
  8. * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
  9. *
  10. * This software is licensed as described in the file COPYING, which
  11. * you should have received as part of this distribution. The terms
  12. * are also available at https://curl.se/docs/copyright.html.
  13. *
  14. * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15. * copies of the Software, and permit persons to whom the Software is
  16. * furnished to do so, under the terms of the COPYING file.
  17. *
  18. * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19. * KIND, either express or implied.
  20. *
  21. * SPDX-License-Identifier: curl
  22. *
  23. ***************************************************************************/
  24. #include "curl_setup.h"
  25. #if !defined(CURL_DISABLE_COOKIES) || !defined(CURL_DISABLE_ALTSVC) || \
  26. !defined(CURL_DISABLE_HSTS) || !defined(CURL_DISABLE_NETRC)
  27. #include "curl_get_line.h"
  28. #include "curl_memory.h"
  29. /* The last #include file should be: */
  30. #include "memdebug.h"
  31. /*
  32. * Curl_get_line() makes sure to only return complete whole lines that fit in
  33. * 'len' bytes and end with a newline.
  34. */
  35. char *Curl_get_line(char *buf, int len, FILE *input)
  36. {
  37. bool partial = FALSE;
  38. while(1) {
  39. char *b = fgets(buf, len, input);
  40. if(b) {
  41. size_t rlen = strlen(b);
  42. if(rlen && (b[rlen-1] == '\n')) {
  43. if(partial) {
  44. partial = FALSE;
  45. continue;
  46. }
  47. return b;
  48. }
  49. /* read a partial, discard the next piece that ends with newline */
  50. partial = TRUE;
  51. }
  52. else
  53. break;
  54. }
  55. return NULL;
  56. }
  57. #endif /* if not disabled */