git-tar-tree: no more void pointer arithmetic

[git.git] / quote.c

diff --git a/quote.c b/quote.c
index e662a7d..06792d4 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -112,7 +112,8 @@ char *sq_dequote(char *arg)
  *     but not enclosed in double-quote pair.  Return value is undefined.
  */
 
-int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq)
+static int quote_c_style_counted(const char *name, int namelen,
+                                char *outbuf, FILE *outfp, int no_dq)
 {
 #undef EMIT
 #define EMIT(c) \
@@ -125,8 +126,10 @@ int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq)
 
        if (!no_dq)
                EMIT('"');
-       for (sp = name; (ch = *sp++); ) {
-
+       for (sp = name; sp < name + namelen; sp++) {
+               ch = *sp;
+               if (!ch)
+                       break;
                if ((ch < ' ') || (ch == '"') || (ch == '\\') ||
                    (ch == 0177)) {
                        needquote = 1;
@@ -141,8 +144,6 @@ int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq)
 
                        case '\\': /* fallthru */
                        case '"': EMITQ(); break;
-                       case ' ':
-                               break;
                        default:
                                /* octal */
                                EMITQ();
@@ -162,6 +163,12 @@ int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq)
        return needquote ? count : 0;
 }
 
+int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq)
+{
+       int cnt = strlen(name);
+       return quote_c_style_counted(name, cnt, outbuf, outfp, no_dq);
+}
+
 /*
  * C-style name unquoting.
  *
@@ -227,28 +234,30 @@ char *unquote_c_style(const char *quoted, const char **endp)
        }
 }
 
-void write_name_quoted(const char *prefix, const char *name,
-                      int quote, FILE *out)
+void write_name_quoted(const char *prefix, int prefix_len,
+                      const char *name, int quote, FILE *out)
 {
        int needquote;
 
        if (!quote) {
        no_quote:
-               if (prefix && prefix[0])
-                       fputs(prefix, out);
+               if (prefix_len)
+                       fprintf(out, "%.*s", prefix_len, prefix);
                fputs(name, out);
                return;
        }
 
        needquote = 0;
-       if (prefix && prefix[0])
-               needquote = quote_c_style(prefix, NULL, NULL, 0);
+       if (prefix_len)
+               needquote = quote_c_style_counted(prefix, prefix_len,
+                                                 NULL, NULL, 0);
        if (!needquote)
                needquote = quote_c_style(name, NULL, NULL, 0);
        if (needquote) {
                fputc('"', out);
-               if (prefix && prefix[0])
-                       quote_c_style(prefix, NULL, out, 1);
+               if (prefix_len)
+                       quote_c_style_counted(prefix, prefix_len,
+                                             NULL, out, 1);
                quote_c_style(name, NULL, out, 1);
                fputc('"', out);
        }