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  1. #ifndef QUOTE_H
  2. #define QUOTE_H
  3. struct strbuf;
  4. /* Help to copy the thing properly quoted for the shell safety.
  5. * any single quote is replaced with '\'', any exclamation point
  6. * is replaced with '\!', and the whole thing is enclosed in a
  7. * single quote pair.
  8. *
  9. * For example, if you are passing the result to system() as an
  10. * argument:
  11. *
  12. * sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
  13. *
  14. * would be appropriate. If the system() is going to call ssh to
  15. * run the command on the other side:
  16. *
  17. * sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
  18. * sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
  19. *
  20. * Note that the above examples leak memory! Remember to free result from
  21. * sq_quote() in a real application.
  22. *
  23. * sq_quote_buf() writes to an existing buffer of specified size; it
  24. * will return the number of characters that would have been written
  25. * excluding the final null regardless of the buffer size.
  26. *
  27. * sq_quotef() quotes the entire formatted string as a single result.
  28. */
  29. void sq_quote_buf(struct strbuf *, const char *src);
  30. void sq_quote_argv(struct strbuf *, const char **argv);
  31. void sq_quotef(struct strbuf *, const char *fmt, ...);
  32. /*
  33. * These match their non-pretty variants, except that they avoid
  34. * quoting when there are no exotic characters. These should only be used for
  35. * human-readable output, as sq_dequote() is not smart enough to dequote it.
  36. */
  37. void sq_quote_buf_pretty(struct strbuf *, const char *src);
  38. void sq_quote_argv_pretty(struct strbuf *, const char **argv);
  39. void sq_append_quote_argv_pretty(struct strbuf *dst, const char **argv);
  40. /* This unwraps what sq_quote() produces in place, but returns
  41. * NULL if the input does not look like what sq_quote would have
  42. * produced.
  43. */
  44. char *sq_dequote(char *);
  45. /*
  46. * Same as the above, but can be used to unwrap many arguments in the
  47. * same string separated by space. Like sq_quote, it works in place,
  48. * modifying arg and appending pointers into it to argv.
  49. */
  50. int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
  51. /*
  52. * Same as above, but store the unquoted strings in an argv_array. We will
  53. * still modify arg in place, but unlike sq_dequote_to_argv, the argv_array
  54. * will duplicate and take ownership of the strings.
  55. */
  56. struct argv_array;
  57. int sq_dequote_to_argv_array(char *arg, struct argv_array *);
  58. int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
  59. size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
  60. void quote_two_c_style(struct strbuf *, const char *, const char *, int);
  61. void write_name_quoted(const char *name, FILE *, int terminator);
  62. void write_name_quoted_relative(const char *name, const char *prefix,
  63. FILE *fp, int terminator);
  64. /* quote path as relative to the given prefix */
  65. char *quote_path_relative(const char *in, const char *prefix,
  66. struct strbuf *out);
  67. /* quoting as a string literal for other languages */
  68. void perl_quote_buf(struct strbuf *sb, const char *src);
  69. void python_quote_buf(struct strbuf *sb, const char *src);
  70. void tcl_quote_buf(struct strbuf *sb, const char *src);
  71. void basic_regex_quote_buf(struct strbuf *sb, const char *src);
  72. #endif