f37a291c52
Enable -Wextra. This found a few real bugs plus a number of signed/unsigned type mismatches/uncleanlinesses. It also required a few annotations All things considered it was still worth it so lets try with this enabled for now. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
#ifndef QUOTE_H
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#define QUOTE_H
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#include <stddef.h>
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#include <stdio.h>
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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_util/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_print(FILE *stream, const char *src);
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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. "next" is changed to point to the
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* next argument that should be passed as first parameter. When there
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* is no more argument to be dequoted, "next" is updated to point to NULL.
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*/
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extern char *sq_dequote_step(char *arg, char **next);
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extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
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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_quotedpfx(const char *pfx, ssize_t pfxlen,
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const char *name, FILE *, int terminator);
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/* quote path as relative to the given prefix */
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char *quote_path_relative(const char *in, int len,
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struct strbuf *out, const char *prefix);
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/* quoting as a string literal for other languages */
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extern void perl_quote_print(FILE *stream, const char *src);
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extern void python_quote_print(FILE *stream, const char *src);
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extern void tcl_quote_print(FILE *stream, const char *src);
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#endif
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