git-update-index(1): fix use of quoting in section title

diff --git a/quote.c b/quote.c
index 1910d000a5d288734aaea24da617481223ff9f56..dc5c0a7715e4782024ede6dd90b150f6e71022ee 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -45,6 +45,23 @@ size_t sq_quote_buf(char *dst, size_t n, const char *src)
        return len;
 }
 
+void sq_quote_print(FILE *stream, const char *src)
+{
+       char c;
+
+       fputc('\'', stream);
+       while ((c = *src++)) {
+               if (need_bs_quote(c)) {
+                       fputs("'\\", stream);
+                       fputc(c, stream);
+                       fputc('\'', stream);
+               } else {
+                       fputc(c, stream);
+               }
+       }
+       fputc('\'', stream);
+}
+
 char *sq_quote(const char *src)
 {
        char *buf;
@@ -57,6 +74,67 @@ char *sq_quote(const char *src)
        return buf;
 }
 
+char *sq_quote_argv(const char** argv, int count)
+{
+       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]);
+       }
+
+       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)
 {
        char *dst = arg;
@@ -131,7 +209,7 @@ static int quote_c_style_counted(const char *name, int namelen,
                if (!ch)
                        break;
                if ((ch < ' ') || (ch == '"') || (ch == '\\') ||
-                   (ch == 0177)) {
+                   (ch >= 0177)) {
                        needquote = 1;
                        switch (ch) {
                        case '\a': EMITQ(); ch = 'a'; break;