Add git-for-each-ref: helper for language bindings
[git/git.git] / quote.h
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1#ifndef QUOTE_H
2#define QUOTE_H
3
77d604c3 4#include <stddef.h>
4f6fbcdc 5#include <stdio.h>
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6
7/* Help to copy the thing properly quoted for the shell safety.
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8 * any single quote is replaced with '\'', any exclamation point
9 * is replaced with '\!', and the whole thing is enclosed in a
10 * single quote pair.
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11 *
12 * For example, if you are passing the result to system() as an
13 * argument:
14 *
15 * sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
16 *
17 * would be appropriate. If the system() is going to call ssh to
18 * run the command on the other side:
19 *
20 * sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
21 * sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
22 *
23 * Note that the above examples leak memory! Remember to free result from
24 * sq_quote() in a real application.
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25 *
26 * sq_quote_buf() writes to an existing buffer of specified size; it
27 * will return the number of characters that would have been written
28 * excluding the final null regardless of the buffer size.
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29 */
30
4f6fbcdc 31extern char *sq_quote(const char *src);
575ba9d6 32extern void sq_quote_print(FILE *stream, const char *src);
4f6fbcdc 33extern size_t sq_quote_buf(char *dst, size_t n, const char *src);
7cf67205 34extern char *sq_quote_argv(const char** argv, int count);
4f6fbcdc 35
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36/*
37 * Append a string to a string buffer, with or without shell quoting.
38 * Return true if the buffer overflowed.
39 */
40extern int add_to_string(char **ptrp, int *sizep, const char *str, int quote);
41
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42/* This unwraps what sq_quote() produces in place, but returns
43 * NULL if the input does not look like what sq_quote would have
44 * produced.
45 */
46extern char *sq_dequote(char *);
47
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48extern int quote_c_style(const char *name, char *outbuf, FILE *outfp,
49 int nodq);
50extern char *unquote_c_style(const char *quoted, const char **endp);
51
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52extern void write_name_quoted(const char *prefix, int prefix_len,
53 const char *name, int quote, FILE *out);
6fb737be 54
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55/* quoting as a string literal for other languages */
56extern void perl_quote_print(FILE *stream, const char *src);
57extern void python_quote_print(FILE *stream, const char *src);
58
6fb737be 59#endif