Fix rewrite_diff() name quoting.

[thirdparty/git.git] / quote.c

diff --git a/quote.c b/quote.c
index b1efe188d4380b7885cdfbe1cc81072e1604249b..d061626c34f1e62c538db6e931c29751be4fdbcf 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -12,37 +12,31 @@
  *  a'b      ==> a'\''b    ==> 'a'\''b'
  *  a!b      ==> a'\!'b    ==> 'a'\!'b'
  */
-#undef EMIT
-#define EMIT(x) do { if (++len < n) *bp++ = (x); } while(0)
-
 static inline int need_bs_quote(char c)
 {
        return (c == '\'' || c == '!');
 }
 
-static size_t sq_quote_buf(char *dst, size_t n, const char *src)
+void sq_quote_buf(struct strbuf *dst, const char *src)
 {
-       char c;
-       char *bp = dst;
-       size_t len = 0;
-
-       EMIT('\'');
-       while ((c = *src++)) {
-               if (need_bs_quote(c)) {
-                       EMIT('\'');
-                       EMIT('\\');
-                       EMIT(c);
-                       EMIT('\'');
-               } else {
-                       EMIT(c);
+       char *to_free = NULL;
+
+       if (dst->buf == src)
+               to_free = strbuf_detach(dst, NULL);
+
+       strbuf_addch(dst, '\'');
+       while (*src) {
+               size_t len = strcspn(src, "'!");
+               strbuf_add(dst, src, len);
+               src += len;
+               while (need_bs_quote(*src)) {
+                       strbuf_addstr(dst, "'\\");
+                       strbuf_addch(dst, *src++);
+                       strbuf_addch(dst, '\'');
                }
        }
-       EMIT('\'');
-
-       if ( n )
-               *bp = 0;
-
-       return len;
+       strbuf_addch(dst, '\'');
+       free(to_free);
 }
 
 void sq_quote_print(FILE *stream, const char *src)
@@ -62,65 +56,18 @@ void sq_quote_print(FILE *stream, const char *src)
        fputc('\'', stream);
 }
 
-char *sq_quote_argv(const char** argv, int count)
+void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen)
 {
-       char *buf, *to;
        int i;
-       size_t len = 0;
-
-       /* Count argv if needed. */
-       if (count < 0) {
-               for (count = 0; argv[count]; count++)
-                       ; /* just counting */
-       }
-
-       /* Special case: no argv. */
-       if (!count)
-               return xcalloc(1,1);
-
-       /* Get destination buffer length. */
-       for (i = 0; i < count; i++)
-               len += sq_quote_buf(NULL, 0, argv[i]) + 1;
-
-       /* Alloc destination buffer. */
-       to = buf = xmalloc(len + 1);
 
        /* Copy into destination buffer. */
-       for (i = 0; i < count; ++i) {
-               *to++ = ' ';
-               to += sq_quote_buf(to, len, argv[i]);
+       strbuf_grow(dst, 255);
+       for (i = 0; argv[i]; ++i) {
+               strbuf_addch(dst, ' ');
+               sq_quote_buf(dst, argv[i]);
+               if (maxlen && dst->len > maxlen)
+                       die("Too many or long arguments");
        }
-
-       return buf;
-}
-
-/*
- * Append a string to a string buffer, with or without shell quoting.
- * Return true if the buffer overflowed.
- */
-int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
-{
-       char *p = *ptrp;
-       int size = *sizep;
-       int oc;
-       int err = 0;
-
-       if (quote)
-               oc = sq_quote_buf(p, size, str);
-       else {
-               oc = strlen(str);
-               memcpy(p, str, (size <= oc) ? size - 1 : oc);
-       }
-
-       if (size <= oc) {
-               err = 1;
-               oc = size - 1;
-       }
-
-       *ptrp += oc;
-       **ptrp = '\0';
-       *sizep -= oc;
-       return err;
 }
 
 char *sq_dequote(char *arg)
@@ -177,7 +124,8 @@ static signed char const sq_lookup[256] = {
        /* 0x80 */ /* set to 0 */
 };
 
-static inline int sq_must_quote(char c) {
+static inline int sq_must_quote(char c)
+{
        return sq_lookup[(unsigned char)c] + quote_path_fully > 0;
 }
 
@@ -265,6 +213,22 @@ size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq)
        return quote_c_style_counted(name, -1, sb, fp, nodq);
 }
 
+void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq)
+{
+       if (quote_c_style(prefix, NULL, NULL, 0) ||
+           quote_c_style(path, NULL, NULL, 0)) {
+               if (!nodq)
+                       strbuf_addch(sb, '"');
+               quote_c_style(prefix, sb, NULL, 1);
+               quote_c_style(path, sb, NULL, 1);
+               if (!nodq)
+                       strbuf_addch(sb, '"');
+       } else {
+               strbuf_addstr(sb, prefix);
+               strbuf_addstr(sb, path);
+       }
+}
+
 void write_name_quoted(const char *name, FILE *fp, int terminator)
 {
        if (terminator) {