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77d604c309
Create function to sq_quote into a buffer Handle !'s for csh-based shells Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
54 lines
966 B
C
54 lines
966 B
C
#include "cache.h"
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#include "quote.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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*
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* E.g.
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* original sq_quote result
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* name ==> name ==> 'name'
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* a b ==> a b ==> 'a b'
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* a'b ==> a'\''b ==> 'a'\''b'
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* a!b ==> a'\!'b ==> 'a'\!'b'
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*/
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#define EMIT(x) ( (++len < n) && (*bp++ = (x)) )
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size_t sq_quote_buf(char *dst, size_t n, const char *src)
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{
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char c;
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char *bp = dst;
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size_t len = 0;
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EMIT('\'');
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while ((c = *src++)) {
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if (c == '\'' || c == '!') {
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EMIT('\'');
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EMIT('\\');
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EMIT(c);
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EMIT('\'');
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} else {
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EMIT(c);
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}
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}
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EMIT('\'');
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if ( n )
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*bp = 0;
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return len;
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}
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char *sq_quote(const char *src)
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{
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char *buf;
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size_t cnt;
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cnt = sq_quote_buf(NULL, 0, src) + 1;
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buf = xmalloc(cnt);
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sq_quote_buf(buf, cnt, src);
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return buf;
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}
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