Andrew's git - gitweb.git/blob

   1#ifndef QUOTE_H
   2#define QUOTE_H
   3
   4struct strbuf;
   5
   6/* Help to copy the thing properly quoted for the shell safety.
   7 * any single quote is replaced with '\'', any exclamation point
   8 * is replaced with '\!', and the whole thing is enclosed in a
   9 * single quote pair.
  10 *
  11 * For example, if you are passing the result to system() as an
  12 * argument:
  13 *
  14 * sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
  15 *
  16 * would be appropriate.  If the system() is going to call ssh to
  17 * run the command on the other side:
  18 *
  19 * sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
  20 * sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
  21 *
  22 * Note that the above examples leak memory!  Remember to free result from
  23 * sq_quote() in a real application.
  24 *
  25 * sq_quote_buf() writes to an existing buffer of specified size; it
  26 * will return the number of characters that would have been written
  27 * excluding the final null regardless of the buffer size.
  28 */
  29
  30extern void sq_quote_buf(struct strbuf *, const char *src);
  31extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen);
  32
  33/* This unwraps what sq_quote() produces in place, but returns
  34 * NULL if the input does not look like what sq_quote would have
  35 * produced.
  36 */
  37extern char *sq_dequote(char *);
  38
  39/*
  40 * Same as the above, but can be used to unwrap many arguments in the
  41 * same string separated by space. Like sq_quote, it works in place,
  42 * modifying arg and appending pointers into it to argv.
  43 */
  44extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
  45
  46/*
  47 * Same as above, but store the unquoted strings in an argv_array. We will
  48 * still modify arg in place, but unlike sq_dequote_to_argv, the argv_array
  49 * will duplicate and take ownership of the strings.
  50 */
  51struct argv_array;
  52extern int sq_dequote_to_argv_array(char *arg, struct argv_array *);
  53
  54extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
  55extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
  56extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);
  57
  58extern void write_name_quoted(const char *name, FILE *, int terminator);
  59extern void write_name_quoted_relative(const char *name, const char *prefix,
  60                FILE *fp, int terminator);
  61
  62/* quote path as relative to the given prefix */
  63extern char *quote_path_relative(const char *in, const char *prefix,
  64                          struct strbuf *out);
  65
  66/* quoting as a string literal for other languages */
  67extern void perl_quote_buf(struct strbuf *sb, const char *src);
  68extern void python_quote_buf(struct strbuf *sb, const char *src);
  69extern void tcl_quote_buf(struct strbuf *sb, const char *src);
  70
  71#endif