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_print(FILE *stream, const char *src); 31 32extern void sq_quote_buf(struct strbuf *, const char *src); 33extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen); 34 35/* This unwraps what sq_quote() produces in place, but returns 36 * NULL if the input does not look like what sq_quote would have 37 * produced. 38 */ 39extern char *sq_dequote(char *); 40 41/* 42 * Same as the above, but can be used to unwrap many arguments in the 43 * same string separated by space. "next" is changed to point to the 44 * next argument that should be passed as first parameter. When there 45 * is no more argument to be dequoted, "next" is updated to point to NULL. 46 */ 47extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc); 48 49extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp); 50extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq); 51extern void quote_two_c_style(struct strbuf *, const char *, const char *, int); 52 53extern void write_name_quoted(const char *name, FILE *, int terminator); 54extern void write_name_quotedpfx(const char *pfx, size_t pfxlen, 55 const char *name, FILE *, int terminator); 56extern void write_name_quoted_relative(const char *name, size_t len, 57 const char *prefix, size_t prefix_len, 58 FILE *fp, int terminator); 59 60/* quote path as relative to the given prefix */ 61extern char *quote_path_relative(const char *in, int len, 62 struct strbuf *out, const char *prefix); 63 64/* quoting as a string literal for other languages */ 65extern void perl_quote_print(FILE *stream, const char *src); 66extern void python_quote_print(FILE *stream, const char *src); 67extern void tcl_quote_print(FILE *stream, const char *src); 68 69#endif