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793dc676e0
Similar to the previous commit, we can't use kws on icase search outside ascii range. But we can't simply pass the pattern to regcomp/pcre like the previous commit because it may contain regex special characters, so we need to quote the regex first. To avoid misquote traps that could lead to undefined behavior, we always stick to basic regex engine in this case. We don't need fancy features for grepping a literal string anyway. basic_regex_quote_buf() assumes that if the pattern is in a multibyte encoding, ascii chars must be unambiguously encoded as single bytes. This is true at least for UTF-8. For others, let's wait until people yell up. Chances are nobody uses multibyte, non utf-8 charsets anymore. Noticed-by: Plamen Totev <plamen.totev@abv.bg> Helped-by: René Scharfe <l.s.r@web.de> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
#ifndef QUOTE_H
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#define QUOTE_H
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struct strbuf;
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/* Help to copy the thing properly quoted for the shell safety.
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* any single quote is replaced with '\'', any exclamation point
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* is replaced with '\!', and the whole thing is enclosed in a
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* single quote pair.
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*
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* For example, if you are passing the result to system() as an
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* argument:
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*
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* sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
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*
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* would be appropriate. If the system() is going to call ssh to
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* run the command on the other side:
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*
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* sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
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* sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
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*
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* Note that the above examples leak memory! Remember to free result from
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* sq_quote() in a real application.
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*
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* sq_quote_buf() writes to an existing buffer of specified size; it
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* will return the number of characters that would have been written
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* excluding the final null regardless of the buffer size.
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*/
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extern void sq_quote_buf(struct strbuf *, const char *src);
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extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen);
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/* This unwraps what sq_quote() produces in place, but returns
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* NULL if the input does not look like what sq_quote would have
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* produced.
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*/
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extern char *sq_dequote(char *);
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/*
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* Same as the above, but can be used to unwrap many arguments in the
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* same string separated by space. Like sq_quote, it works in place,
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* modifying arg and appending pointers into it to argv.
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*/
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extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
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/*
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* Same as above, but store the unquoted strings in an argv_array. We will
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* still modify arg in place, but unlike sq_dequote_to_argv, the argv_array
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* will duplicate and take ownership of the strings.
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*/
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struct argv_array;
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extern int sq_dequote_to_argv_array(char *arg, struct argv_array *);
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extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
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extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
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extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);
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extern void write_name_quoted(const char *name, FILE *, int terminator);
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extern void write_name_quoted_relative(const char *name, const char *prefix,
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FILE *fp, int terminator);
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/* quote path as relative to the given prefix */
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extern char *quote_path_relative(const char *in, const char *prefix,
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struct strbuf *out);
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/* quoting as a string literal for other languages */
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extern void perl_quote_buf(struct strbuf *sb, const char *src);
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extern void python_quote_buf(struct strbuf *sb, const char *src);
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extern void tcl_quote_buf(struct strbuf *sb, const char *src);
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extern void basic_regex_quote_buf(struct strbuf *sb, const char *src);
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#endif
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