transport-helper: drop read/write errno checks
[git.git] / quote.h
blobea992dcc91ef599b5d053b00ae3a036ce5e87c1a
1 #ifndef QUOTE_H
2 #define QUOTE_H
4 struct strbuf;
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.
11 * For example, if you are passing the result to system() as an
12 * argument:
14 * sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
16 * would be appropriate. If the system() is going to call ssh to
17 * run the command on the other side:
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));
22 * Note that the above examples leak memory! Remember to free result from
23 * sq_quote() in a real application.
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.
29 * sq_quotef() quotes the entire formatted string as a single result.
32 extern void sq_quote_buf(struct strbuf *, const char *src);
33 extern void sq_quote_argv(struct strbuf *, const char **argv);
34 extern void sq_quotef(struct strbuf *, const char *fmt, ...);
37 * These match their non-pretty variants, except that they avoid
38 * quoting when there are no exotic characters. These should only be used for
39 * human-readable output, as sq_dequote() is not smart enough to dequote it.
41 void sq_quote_buf_pretty(struct strbuf *, const char *src);
42 void sq_quote_argv_pretty(struct strbuf *, const char **argv);
44 /* This unwraps what sq_quote() produces in place, but returns
45 * NULL if the input does not look like what sq_quote would have
46 * produced.
48 extern char *sq_dequote(char *);
51 * Same as the above, but can be used to unwrap many arguments in the
52 * same string separated by space. Like sq_quote, it works in place,
53 * modifying arg and appending pointers into it to argv.
55 extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
58 * Same as above, but store the unquoted strings in an argv_array. We will
59 * still modify arg in place, but unlike sq_dequote_to_argv, the argv_array
60 * will duplicate and take ownership of the strings.
62 struct argv_array;
63 extern int sq_dequote_to_argv_array(char *arg, struct argv_array *);
65 extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
66 extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
67 extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);
69 extern void write_name_quoted(const char *name, FILE *, int terminator);
70 extern void write_name_quoted_relative(const char *name, const char *prefix,
71 FILE *fp, int terminator);
73 /* quote path as relative to the given prefix */
74 extern char *quote_path_relative(const char *in, const char *prefix,
75 struct strbuf *out);
77 /* quoting as a string literal for other languages */
78 extern void perl_quote_buf(struct strbuf *sb, const char *src);
79 extern void python_quote_buf(struct strbuf *sb, const char *src);
80 extern void tcl_quote_buf(struct strbuf *sb, const char *src);
81 extern void basic_regex_quote_buf(struct strbuf *sb, const char *src);
83 #endif