blob: 2486e6e68c2d7fa7bc2f78c18df323cc9adcc894 [file] [log] [blame]
#ifndef QUOTE_H
#define QUOTE_H
#include <stddef.h>
#include <stdio.h>
/* Help to copy the thing properly quoted for the shell safety.
* any single quote is replaced with '\'', any exclamation point
* is replaced with '\!', and the whole thing is enclosed in a
* single quote pair.
* For example, if you are passing the result to system() as an
* argument:
* sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
* would be appropriate. If the system() is going to call ssh to
* run the command on the other side:
* sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
* sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
* Note that the above examples leak memory! Remember to free result from
* sq_quote() in a real application.
* sq_quote_buf() writes to an existing buffer of specified size; it
* will return the number of characters that would have been written
* excluding the final null regardless of the buffer size.
extern char *sq_quote(const char *src);
extern size_t sq_quote_buf(char *dst, size_t n, const char *src);
/* This unwraps what sq_quote() produces in place, but returns
* NULL if the input does not look like what sq_quote would have
* produced.
extern char *sq_dequote(char *);
extern int quote_c_style(const char *name, char *outbuf, FILE *outfp,
int nodq);
extern char *unquote_c_style(const char *quoted, const char **endp);
extern void write_name_quoted(const char *prefix, const char *name,
int quote, FILE *out);